WO2015074592A1 - 一种兼容高阶调制和低阶调制的传输方法、装置 - Google Patents

一种兼容高阶调制和低阶调制的传输方法、装置 Download PDF

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Publication number
WO2015074592A1
WO2015074592A1 PCT/CN2014/091840 CN2014091840W WO2015074592A1 WO 2015074592 A1 WO2015074592 A1 WO 2015074592A1 CN 2014091840 W CN2014091840 W CN 2014091840W WO 2015074592 A1 WO2015074592 A1 WO 2015074592A1
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WO
WIPO (PCT)
Prior art keywords
mapping table
modulation
order modulation
user equipment
base station
Prior art date
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Ceased
Application number
PCT/CN2014/091840
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English (en)
French (fr)
Inventor
张怀治
陈卫民
吴秀峰
王情
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to KR1020167016653A priority Critical patent/KR101806301B1/ko
Priority to JP2016533088A priority patent/JP6342493B2/ja
Priority to EP14863782.0A priority patent/EP3073696A4/en
Publication of WO2015074592A1 publication Critical patent/WO2015074592A1/zh
Priority to US15/160,810 priority patent/US9806932B2/en
Anticipated expiration legal-status Critical
Priority to US15/729,190 priority patent/US10003491B2/en
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/36—Modulator circuits; Transmitter circuits
    • H04L27/362—Modulation using more than one carrier, e.g. with quadrature carriers, separately amplitude modulated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/36—Modulator circuits; Transmitter circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • H04L1/0016—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy involving special memory structures, e.g. look-up tables
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/3488—Multiresolution systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a transmission method and apparatus compatible with high-order modulation and low-order modulation.
  • the high-order modulation technique is a technique introduced to increase the amount of data transmitted without increasing the transmission bandwidth.
  • the highest order modulation technique of the long-term evolution (LTE) technology is 64-order quadrature amplitude modulation (ie, 64QAM, Quadrature Amplitude Modulation).
  • 64QAM quadrature amplitude modulation
  • the theoretical gain of 256QAM is 33% compared with the current 64QAM, because in the 256QAM scenario, each resource element (RE, Resource Element) can carry 8 bits of data, compared to In the 64QAM scenario, each RE can only carry 6 bits of data. Therefore, in the same RE scenario, the amount of data that can be transmitted by 256QAM is increased by 33% compared with the amount of data that can be transmitted by 64QAM.
  • a mapping table is stored on both the base station side and the user equipment (UE, User Equipment) side.
  • the mapping table includes: a modulation and coding scheme.
  • MCS Modulation Code Schedule
  • IMCS Modulation Code Schedule
  • TBS Index Transmission Block Size
  • ITBS Transmission Block Size
  • the base station side notifies the UE by sending an IMCS, so that the UE selects a corresponding modulation order and a transport block size index in the mapping table according to the IMCS, and performs subsequent data processing.
  • 256QAM is not supported in the existing 3GPP regulations.
  • the modulation order numbers 2, 4, and 6 in FIG. 1 represent QPSK, 16QAM, and 64QAM, respectively.
  • the prior art scheme directly modifies the mapping table, and still maintains a total of 32 IMCSs in the table shown in FIG. 1.
  • part of the modulation order is deleted, The new 256QAM modulation order is replaced, so that the UE can transmit data using 256QAM modulation order.
  • the compatibility problem of the UE that does not support 256QAM is not considered, and the base station in the prior art cannot simultaneously support the 256QAM modulated UE and does not support.
  • the service of the 256QAM modulated UE does not have compatibility, and one of the UEs cannot demodulate the data transmitted by the base station.
  • Embodiments of the present invention provide a transmission method and apparatus compatible with high-order modulation and low-order modulation, which can cooperatively provide services for UEs supporting 256QAM modulation and UEs not supporting 256QAM modulation, and overcome the incompatibility of the prior art. problem.
  • a first aspect of the embodiments of the present invention provides a transmission method for a base station compatible with high-order modulation and low-order modulation, the high-order modulation including 256 orthogonal amplitude modulation QAM, the low-order modulation including 64QAM, 16QAM, and positive At least one of cross-shift keying QPSK, the base station storing a first high-order modulation mapping table supporting the high-order modulation, and a first low-order modulation mapping table supporting the low-order modulation, Methods include:
  • the base station Determining, by the base station, the first modulation mapping table used for communication with the user equipment according to the capability level information sent by the user equipment, where the first modulation mapping table is the first high-order modulation mapping table or the a first low order modulation mapping table;
  • the base station sends the modulation and coding scheme index to the user equipment.
  • the determining, by the base station, the first modulation mapping table used for communication with the user equipment, according to the capability level information sent by the user equipment includes:
  • the modulation mapping table is defined as the first high-order modulation mapping table; wherein the user equipment stores a second high-order modulation mapping table that supports the high-order modulation.
  • the determining, by the base station, the first modulation mapping table used for communication with the user equipment, according to the capability level information sent by the user equipment includes:
  • the base station determines that the first modulation mapping table is the first high-order modulation mapping table. ;or,
  • the base station determines that the first modulation mapping table is the first low-order modulation mapping table.
  • the user equipment stores a second high-order modulation mapping table supporting the high-order modulation, and a second low-order modulation mapping table supporting the low-order modulation.
  • the user equipment And storing a second high-order modulation mapping table supporting the high-order modulation, and a second low-order modulation mapping table supporting the low-order modulation, the method further includes:
  • the base station receives channel quality information reported by the user equipment, where the channel quality information includes a channel quality indicator CQI;
  • the base station determines whether to update the first modulation mapping table according to the channel quality information.
  • the base station determines, according to the channel quality information, whether to update the first Modulation mapping table, including:
  • the base station determines to update the first modulation mapping table, and the updated first modulation
  • the mapping table is the first low-order modulation mapping table
  • the base station determines to update the first modulation mapping table, and the updated first modulation mapping table is the first high-order modulation mapping table.
  • the method further includes:
  • the base station sends first update information to the user equipment, where the first update information is used to indicate that the user equipment updates a second modulation mapping table, where the second modulation mapping table is used to communicate with the base station, The second higher order modulation map or the second low order modulation map.
  • the user equipment And storing a second high-order modulation mapping table supporting the high-order modulation, and a second low-order modulation mapping table supporting the low-order modulation, the method further includes:
  • the base station receives the second update information sent by the device, where the second update information is used to instruct the base station to update the first modulation mapping table.
  • the first update information or the first The second update information is carried by the radio resource control message.
  • the first update information is downlinked through the physical layer. Control channel transmission.
  • a second aspect of the embodiments of the present invention provides a method for transmitting a user equipment, including:
  • the user equipment sends capability level information to the base station, where the capability level information is used to indicate that the user equipment supports high-order modulation or low-order modulation; wherein the high-order modulation includes 256 orthogonal amplitude modulation QAM, the low
  • the order modulation includes at least one of 64QAM, 16QAM, and quadrature phase shift keying QPSK, the base station storing a first high order modulation map supporting the high order modulation, and a first low order supporting low order modulation Modulation mapping table;
  • a modulation and coding scheme index sent by the base station where the modulation and coding scheme index is determined by the base station according to a first modulation mapping table, where the first modulation mapping table is the first high a modulation map or a first low order modulation map;
  • the user equipment stores at least one of a second high-order modulation mapping table supporting the high-order modulation and a second low-order modulation mapping table supporting the low-order modulation, the second modulation mapping table. And the second higher order modulation mapping table or the second low order modulation mapping table.
  • the user equipment when the user equipment stores a second high-order modulation mapping table that supports the high-order modulation, the user equipment determines to communicate with the base station.
  • the second modulation mapping table includes:
  • the user equipment uses the second high-order modulation mapping table as the second modulation mapping table by default.
  • the user equipment when the user equipment stores a second high-order modulation mapping table that supports the high-order modulation and a second low-order that supports the low-order modulation
  • the user equipment determines a second modulation mapping table that is in communication with the base station, and includes:
  • the user equipment determines that the second modulation mapping table is the second high order modulation mapping table.
  • the user equipment determines that the second modulation mapping table is the second low order modulation mapping table.
  • the method when the user equipment When storing a second high-order modulation mapping table supporting the high-order modulation and a second low-order modulation mapping table supporting the low-order modulation, the method further includes:
  • the user equipment sends channel quality information to the base station, where the channel quality information is used by the base station to determine whether to update the first modulation mapping table, where the channel quality information includes a channel quality indicator CQI.
  • the method further includes:
  • the user equipment receives first update information sent by the base station, and updates the second modulation mapping table according to the first update information.
  • the method when the user equipment When storing a second high-order modulation mapping table supporting the high-order modulation and a second low-order modulation mapping table supporting the low-order modulation, the method further includes:
  • the user equipment determines channel quality information, where the channel quality information includes a channel quality indicator
  • the user equipment determines, according to the channel quality information, whether to update the Two modulation mapping tables, including:
  • the user equipment determines to update the second modulation mapping table, and the updated second The modulation mapping table is the second low-order modulation mapping table;
  • the user equipment determines to update the second modulation mapping table, and the updated second The modulation map is the second higher order modulation map.
  • the method further includes:
  • the user equipment sends second update information to the base station, where the second update information is used to instruct the base station to update the first modulation mapping table.
  • the first update The information or the second update information is carried by a radio resource control message.
  • the first update information is transmitted by using a physical layer downlink control channel.
  • the high-order modulation includes 256 orthogonal amplitude modulation QAM
  • the low-order modulation includes at least one of 64QAM, 16QAM, and quadrature phase shift keying QPSK
  • the base station include:
  • a first receiving unit a determining unit, a first transmitting unit, and a first storage unit;
  • the first receiving unit is configured to receive capability level information sent by the user equipment, where the capability level information is used to indicate that the user equipment supports the high-order modulation or supports the low-order modulation;
  • the determining unit is configured to determine, according to the capability level information sent by the user equipment, a first modulation mapping table used for communication with the user equipment, where the first modulation mapping table is the first high-order modulation mapping a table or the first low order modulation mapping table;
  • the determining unit is further configured to determine, according to the modulation mapping table, a modulation and coding scheme index, where the modulation and coding scheme index is used by the user equipment to determine a modulation and coding scheme;
  • the first sending unit is configured to send the modulation and coding scheme index to the user equipment
  • the first storage unit is configured to store, by the base station, a first high-order modulation mapping table that supports the high-order modulation, and a first low-order modulation mapping table that supports the low-order modulation,
  • the determining unit determines, according to the capability level information sent by the user equipment, a first modulation mapping table used for communication with the user equipment, including :
  • the base station determines that the modulation mapping table is the first high-order modulation mapping table; wherein the user equipment stores the support A second higher order modulation map of higher order modulation.
  • the determining unit determines, according to the capability level information sent by the user equipment, a first modulation mapping table used for communication with the user equipment, including :
  • the base station determines that the first modulation mapping table is the first high-order modulation mapping table
  • the base station determines that the first modulation mapping table is the first low-order modulation mapping table.
  • the user equipment stores a second high-order modulation mapping table supporting the high-order modulation, and a second low-order modulation mapping table supporting the low-order modulation.
  • the first receiving unit is further configured to receive channel quality information reported by the user equipment, where the channel quality information includes a channel quality indicator CQI;
  • the determining unit is further configured to determine, according to the channel quality information, whether to update the first modulation mapping table.
  • the determining unit determines, according to the channel quality information, whether to update the The first modulation mapping table includes:
  • the base station determines to update the first modulation mapping table, and the updated first modulation
  • the mapping table is the first low-order modulation mapping table
  • the base station determines to update the first modulation mapping table, and the updated first modulation The mapping table is the first higher order modulation mapping table.
  • the first sending unit is further configured to send, to the user equipment, An update information, the first update information is used to instruct the user equipment to update the second modulation map
  • the second modulation mapping table is configured to communicate with the base station, and is the second high-order modulation mapping table or the second low-order modulation mapping table.
  • the first receiving unit is further configured to receive second update information that is sent by the device, where the second update information is used to instruct the base station to update the first modulation mapping table.
  • the first update information or the second update information is carried by a radio resource control message.
  • the first update information is transmitted through a physical layer downlink control channel.
  • a user equipment includes: a second sending unit, a second receiving unit, a second determining unit, and a second storage unit;
  • the second sending unit is configured to send capability level information to the base station, where the capability level information is used to indicate that the user equipment supports high-order modulation or low-order modulation; wherein the high-order modulation includes 256 orthogonal amplitude modulation QAM, the low-order modulation includes at least one of 64QAM, 16QAM, and quadrature phase shift keying QPSK, the base station storing a first high-order modulation mapping table supporting the high-order modulation, and supporting low-order modulation First low order modulation mapping table;
  • the second receiving unit is configured to receive a modulation and coding scheme index sent by the base station, where the modulation and coding scheme index is determined by the base station according to a first modulation mapping table, where the first modulation mapping table is the first a high-order modulation mapping table or the first low-order modulation mapping table;
  • the second determining unit is configured to determine a second modulation mapping table that is in communication with the base station, and determine a modulation and coding scheme according to the second modulation mapping table and the modulation and coding scheme index;
  • the second storage unit is configured to store at least a second high-order modulation map supporting the high-order modulation And a second of the second low order modulation mapping table supporting the low order modulation, the second modulation mapping table being the second higher order modulation mapping table or the second low order modulation mapping table.
  • a second modulation mapping table that is in communication with the base station, including:
  • the second higher order modulation map is used by default as the second modulation map.
  • a second modulation mapping table that is in communication with the base station, including:
  • the user equipment determines that the second modulation mapping table is the second high order modulation mapping table.
  • the user equipment determines that the second modulation mapping table is the second low order modulation mapping table.
  • the second storage When a second high-order modulation mapping table supporting the high-order modulation and a second low-order modulation mapping table supporting the low-order modulation are stored in the unit,
  • the second sending unit is further configured to send channel quality information to the base station, where the channel quality information is used by the base station to determine whether to update the first modulation mapping table, where the channel quality information includes a channel quality indicator CQI.
  • the second receiving unit is further configured to receive the An update message
  • the user equipment further includes: an updating unit, configured to update the second modulation mapping table according to the first update information.
  • the second storage When a second high-order modulation mapping table supporting the high-order modulation and a second low-order modulation mapping table supporting the low-order modulation are stored in the unit,
  • the second determining unit is further configured to determine channel quality information, where the channel quality information includes a channel quality indicator, and determine, according to the channel quality information, whether to update the second modulation mapping table.
  • the second determining unit determines whether to update according to the channel quality information.
  • the second modulation mapping table includes:
  • the user equipment determines to update the second modulation mapping table, and the updated second The modulation mapping table is the second low-order modulation mapping table;
  • the user equipment determines to update the second modulation mapping table, and the updated second The modulation map is the second higher order modulation map.
  • the second sending unit is further configured to send the second And updating the information, the second update information is used to instruct the base station to update the first modulation mapping table.
  • the first update information or the second update information is carried by a radio resource control message.
  • the first update information is transmitted through a physical layer downlink control channel.
  • the base station stores a first high-order modulation mapping table that supports the high-order modulation, and a first low-order modulation mapping table that supports the low-order modulation, where the base station Receiving capability level information sent by the user equipment; the base station is configured according to the energy sent by the user equipment Force level information, a first modulation mapping table for communicating with the user equipment; the base station determining a modulation coding scheme index according to the modulation mapping table, the modulation coding scheme index being used by the user equipment to determine modulation coding a scheme; transmitting the modulation coding scheme index to the user equipment. Therefore, with the technical solution provided by the embodiment of the present invention, the base station can be compatible with the UE supporting 256QAM modulation and the UE not supporting the 256QAM modulation, which overcomes the problem that the base station is incompatible.
  • FIG. 2 is a schematic diagram showing the flow of a transmission method compatible with high-order modulation and low-order modulation according to Embodiment 1 of the present invention
  • FIG. 3 is a schematic diagram showing the flow of a transmission method compatible with high-order modulation and low-order modulation according to Embodiment 2 of the present invention
  • FIG. 4 is a schematic diagram showing a flow of a transmission method compatible with high-order modulation and low-order modulation according to Embodiment 3 of the present invention
  • FIG. 5 is an example of a mapping table according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram showing the flow of a transmission method compatible with high-order modulation and low-order modulation according to Embodiment 4 of the present invention.
  • FIG. 7 is a schematic diagram showing the flow of a transmission method compatible with high-order modulation and low-order modulation according to Embodiment 5 of the present invention.
  • FIG. 8 is a schematic diagram of a base station according to Embodiment 6 of the present invention.
  • FIG. 9 is a schematic diagram of a user equipment according to Embodiment 7 of the present invention.
  • FIG. 10 is a schematic diagram of a base station according to Embodiment 8 of the present invention.
  • FIG. 11 is a schematic diagram of a user equipment according to Embodiment 9 of the present invention.
  • Embodiments of the present invention provide a transmission method and apparatus compatible with high-order modulation and low-order modulation.
  • the technical solution mainly relates to a network device (such as a base station) and a user equipment (UE).
  • the base station may be a device that communicates with user equipment ("UE") or other communication sites such as relay stations.
  • the base station can provide communication coverage for a particular geographic area.
  • the base station may be a Node B (Node B, abbreviated as "NB") in the UMTS; or an evolved Node B (“ENB” or "eNode B” in the LTE or LTE-A)
  • NB Node B
  • ENB evolved Node B
  • eNode B evolved Node B
  • LTE Long Term Evolution-A
  • a UE may be referred to as a terminal, a mobile station, a subscriber unit, a station, or the like.
  • the UE may specifically be a cellular phone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld, a laptop computer. , cordless phone, etc.
  • PDA personal digital assistant
  • a wireless modem a wireless communication device
  • a handheld a laptop computer.
  • cordless phone etc.
  • the following description is made by taking an eNB as an example.
  • Embodiments of the present invention provide a transmission method compatible with high-order modulation and low-order modulation.
  • the high-order modulation includes 256 quadrature amplitude modulation QAM
  • the low-order modulation includes 64QAM, 16QAM, and At least one of quadrature phase shift keying QPSK, in which a first higher order modulation mapping table supporting the high order modulation is stored, and a first low order modulation mapping table supporting the low order modulation
  • Methods include:
  • Step A1 The base station receives the capability level information sent by the user equipment, where the capability level information is used to indicate that the user equipment supports the high-order modulation or supports the low-order modulation.
  • the capability level information may be sent to the eNB in the network access phase of the UE.
  • the timing of receiving the capability level information in the embodiment is not in the network access phase of the UE, but may also be received in other processes.
  • Step A2 The base station determines, according to the capability level information sent by the user equipment, a first modulation mapping table used for communication with the user equipment, where the first modulation mapping table is the first high-order modulation mapping table or Describe the first low order modulation mapping table;
  • the first high-order modulation mapping table may refer to a mapping table that supports 256QAM stored in the base station in the subsequent embodiment; the first low-order modulation mapping table may refer to the storage in the base station in the subsequent embodiment.
  • the mapping table of 256QAM is not supported.
  • a specific implementation manner of step A2 may be: when the capability level information indicates that the user equipment supports the high-order modulation, the base station determines that the modulation mapping table is the first high-order modulation map. a table; wherein the user equipment stores a second higher order modulation map supporting the high order modulation.
  • step A2 may also be:
  • the base station determines that the first modulation mapping table is the first high Order modulation mapping table; or,
  • the base station determines that the first modulation mapping table is the first low-order modulation map. table
  • the user equipment stores a second high-order modulation mapping table supporting the high-order modulation, and a second low-order modulation mapping table supporting the low-order modulation.
  • step A2 A specific implementation manner of the foregoing step A2 will be described in the following embodiments in conjunction with specific embodiments.
  • Step A3 the base station determines, according to the modulation mapping table, a modulation and coding scheme index, where the modulation and coding scheme index is used by the user equipment to determine a modulation and coding scheme;
  • the eNB obtains the traffic size information required by the UE, and the CQI reported by the UE, after the eNB acquires the CQI of the UE, converts the CQI into a corresponding SINR, and then determines the MCS index value and the modulation order according to the MCS and the SINR table. And transport block size index values.
  • Step A4 The base station sends the modulation and coding scheme index to the user equipment.
  • the base station stores a first high-order modulation mapping table supporting the high-order modulation, and a first low-order modulation mapping table supporting the low-order modulation, where the base station receives a user.
  • the capability level information sent by the device the base station determines, according to the capability level information sent by the user equipment, a first modulation mapping table used for communication with the user equipment; the base station determines a modulation and coding scheme according to the modulation mapping table Indexing, the modulation and coding scheme index is used by the user equipment to determine a modulation and coding scheme; and the modulation and coding scheme index is sent to the user equipment; therefore, whether the UE supporting 256QAM or the UE not supporting 256QAM can be accurate
  • the modulation coding scheme index is determined to perform data transmission. Therefore, in the method provided by the embodiment, the eNB can be compatible with the UE supporting 256QAM modulation and the UE not supporting the 256QAM modulation, which overcomes the problem that the a
  • the method further includes:
  • Step A5 the base station receives channel quality information reported by the user equipment, and the channel quality information includes a channel quality indicator CQI;
  • Step A6 The base station determines, according to the channel quality information, whether to update the first modulation mapping table.
  • the determining, by the base station in the foregoing step A6, whether to update the first modulation mapping table according to the channel quality information may be:
  • the base station determines to update the first modulation mapping table, and the updated first modulation
  • the mapping table is the first low-order modulation mapping table
  • the base station determines to update the first modulation mapping table, after updating
  • the first modulation mapping table is the first high-order modulation mapping table.
  • the method further includes:
  • Step A7 The base station sends first update information to the user equipment, where the first update information is sent.
  • the information is used to indicate that the user equipment updates the second modulation mapping table, where the second modulation mapping table is used to communicate with the base station, and is the second high-order modulation mapping table or the second low-order modulation mapping table. .
  • the method further includes:
  • Step A8 The base station receives second update information sent by the device, where the second update information is used to instruct the base station to update the first modulation mapping table.
  • the first update information or the second update information is carried by a radio resource control message.
  • the first update information is transmitted through a physical layer downlink control channel.
  • An embodiment of the present invention provides a transmission method for a user equipment. As shown in FIG. 3, the method includes:
  • Step B1 the user equipment sends capability level information to the base station, where the capability level information is used to indicate that the user equipment supports high-order modulation or low-order modulation; wherein the high-order modulation includes 256 orthogonal amplitude modulation QAM, The low-order modulation includes at least one of 64QAM, 16QAM, and quadrature phase shift keying QPSK, the base station storing a first high-order modulation mapping table supporting the high-order modulation, and a second supporting low-order modulation a low order modulation mapping table;
  • Step B2 the user equipment receives a modulation and coding scheme index sent by the base station, where the modulation and coding scheme index is determined by the base station according to a first modulation mapping table, where the first modulation mapping table is the first high-order a modulation mapping table or the first low-order modulation mapping table;
  • Step B3 the user equipment determines a second modulation mapping table that is in communication with the base station, and determines a modulation and coding scheme according to the second modulation mapping table and the modulation and coding scheme index;
  • the user equipment stores at least one of a second high-order modulation mapping table supporting the high-order modulation and a second low-order modulation mapping table supporting the low-order modulation, the second modulation mapping table. And the second higher order modulation mapping table or the second low order modulation mapping table.
  • the second high-order modulation mapping table may refer to a mapping table that supports 256QAM stored in the UE described in the subsequent embodiment; the second low-order modulation mapping table refers to the subsequent embodiment.
  • a mapping table stored in the UE that does not support 256QAM is described.
  • the user equipment sends capability level information to the base station, receives a modulation and coding scheme index sent by the base station, and the user equipment determines a second modulation mapping table that is in communication with the base station. And determining, according to the second modulation mapping table and the modulation and coding scheme index, a modulation and coding scheme; wherein the user equipment stores at least a second high-order modulation mapping table that supports the high-order modulation and supports the low-order One of the modulated second low-order modulation mapping tables; enabling the eNB to be compatible with UEs supporting 256QAM modulation and UEs not supporting 256QAM modulation, overcoming the problem of prior art eNB incompatibility.
  • the user equipment when the user equipment stores the second high-order modulation mapping table that supports the high-order modulation, the user equipment determines a second modulation mapping table that is in communication with the base station, including:
  • the user equipment uses the second high-order modulation mapping table as the second modulation mapping table by default.
  • the user equipment determines A second modulation mapping table for base station communication, including:
  • the user equipment determines that the second modulation mapping table is the second higher order modulation mapping table.
  • the user equipment determines that the second modulation mapping table is the second low order modulation mapping table.
  • the method further includes:
  • Step B4 The user equipment sends channel quality information to the base station, where the channel quality information is used by the base station to determine whether to update the first modulation mapping table, where the channel quality information includes a channel quality indicator CQI.
  • the method further includes:
  • Step B5 The user equipment receives the first update information sent by the base station, and updates the second modulation mapping table according to the first update information.
  • the method further includes:
  • Step B6 the user equipment determines channel quality information, where the channel quality information includes a channel quality indicator
  • the user equipment determines, according to the channel quality information, whether to update the second modulation mapping table, specifically:
  • the base station determines to update the second modulation mapping table, and the updated second modulation
  • the mapping table is the second low-order modulation mapping table
  • the base station determines to update the second modulation mapping table, after updating The second modulation mapping table is the second higher order modulation mapping table.
  • the method further includes:
  • Step B7 The user equipment sends second update information to the base station, where the second update information is used to instruct the base station to update the first modulation mapping table.
  • the first update information or the second update information is carried by a radio resource control message.
  • the first update information is transmitted through a physical layer downlink control channel.
  • Embodiments of the present invention provide a transmission method compatible with high-order modulation and low-order modulation.
  • the method is based on Embodiments 1 and 2, and represents a scheme for interaction between multiple devices. As shown in FIG. 4, the method includes:
  • Step 101 The UE sends capability level information to the eNB, where the capability level information indicates that the UE supports or does not support 256QAM.
  • the sending capability level information of the UE may be sent in the UE access phase, but this embodiment
  • the timing of not transmitting the capability level information is the network access phase, and may also be sent in other processes.
  • Step 102 The UE sends channel quality information to the eNB.
  • the channel quality information may specifically be a Channel Quality Indicator (CQI).
  • CQI Channel Quality Indicator
  • Step 103 The eNB receives capability level information sent by the UE, and stores the capability level information.
  • Step 104 The eNB receives channel quality information sent by the UE, and determines a modulation order and a TBS index according to the channel quality information.
  • the specific operation of determining the modulation order and the TBS index according to the channel quality information may be: the eNB acquires the traffic size information required by the UE, the CQI reported by the UE, and the current resource status of the eNB, and after comprehensive analysis, determines the modulation order. Number and TBS index.
  • Step 105 The eNB selects a mapping table corresponding to the capability level information according to the stored capability level information, the determined modulation order and the TBS index, and determines an modulation and coding scheme index (IMCS); the modulation and coding scheme index is used by the user equipment.
  • IMCS modulation and coding scheme index
  • a modulation coding scheme is determined; wherein the selected mapping table corresponding to the capability level information can be understood as the "first modulation mapping table" in the first embodiment.
  • the mapping table corresponding to the capability level information selected by the eNB is a mapping table (or a common mapping table) that does not support 256QAM, as shown in FIG. , the same as the mapping table in the prior art;
  • the mapping table corresponding to the capability level information selected by the eNB is a mapping table (or a high-order mapping table) supporting 256QAM, as shown in FIG. .
  • the high-order mapping table in FIG. 5 has a modulation order number M0, M1 ... M31, which is Another way of expressing the modulation order.
  • the understanding of the table may be: assume that when the modulation order determined by the base station side is QPSK (ie, the sequence number is 2, that is, M0 is 2), and the determined TBS index is 0 (ie, T0 is 0), according to FIG.
  • the MCS index determined by the eNB is 0; or, when the MCS index determined by the eNB is still 0, but the corresponding modulation order number and the TBS index in the mapping table are different, that is, M0 is 8 (ie, 256QAM), T0 is 1. It can be understood that when the MCS index is 0, (M0, T0) may have one or more values. Similarly, when the MCS index is i, (Mi, Ti) may have one or more values. That is, the eNB determines the value of the MCS index according to the mapping table shown in FIG. 5 according to the specific value of the obtained (Mi, Ti), where the value of i is (0, 31).
  • mapping table shown in FIG. 5 is merely an example for ease of understanding and is not intended to limit the embodiments of the present invention.
  • Step 106 the eNB sends a determination of the modulation and coding scheme index to the UE;
  • Step 107 The UE receives the modulation coding scheme index, determines a modulation order and a TBS index according to the stored mapping table and the received modulation coding scheme index, and determines a modulation and coding scheme.
  • the modulation coding scheme index sent by the eNB to the UE is obtained according to the mapping table stored in the eNB that does not support 256QAM.
  • the UE receives the modulation and coding scheme. The index is compared with the mapping table stored by itself and does not support 256QAM, thereby determining the modulation order and the TBS index, thereby performing data transmission;
  • the modulation coding scheme index sent by the eNB to the UE is obtained according to the mapping table supporting 256QAM stored in the eNB. Similarly, the UE receives the modulation and coding scheme index, and supports the storage according to its own storage. A mapping table of 256QAM, thereby determining a modulation order and a TBS index for data transmission.
  • the mapping table stored in the 256QAM-enabled UE may be the same as the mapping table shown in FIG. 5, and the simplest implementation manner may be In the mapping table shown in FIG. 5, when the MCS index is i, (Mi, Ti) has only one value. Therefore, if the UE supporting 256QAM receives the modulation coding scheme index sent by the eNB, it can determine (Mi, Ti). value.
  • mapping table stored in the UE supporting 256QAM is as shown in FIG. 5, and the MCS index is i, if there is more than one value of (Mi, Ti), then the UE supporting 256QAM can further obtain the channel according to its own measurement. Quality information (such as CQI) determines the specific value of (Mi, Ti) when the MCS index is i.
  • the principle is that if the channel quality information is better, it can correspond to a higher-order modulation order, that is, the specific value of Mi has two values and two values, which are respectively corresponding to QPSK and 16QAM, and if the channel quality of the current UE is excellent,
  • the specific value of Mi selected by the UE is 4 (that is, the modulation coding scheme is selected as 16QAM), and the value of Ti is the same.
  • the UE first reports capability level information, and the capability
  • the metric level information indicates that the UE supports or does not support 256QAM, and the UE also reports channel quality information for the eNB to determine the modulation order and the TBS index according to the channel quality information, and the eNB according to the capability level information, and the determined modulation order and TBS index.
  • the eNB can be compatible with the UE supporting 256QAM modulation and the UE not supporting the 256QAM modulation, which overcomes the problem that the eNB is incompatible.
  • the embodiment of the present invention provides a transmission method compatible with the high-order modulation and the low-order modulation, which is similar to the method described in the foregoing Embodiment 3, except that the UE supporting the 256QAM described in this embodiment is not only stored. There is a mapping table that supports 256QAM, and a mapping table that does not support 256QAM is also stored. In the case of poor channel quality or network side control, a UE supporting 256QAM may also select a mapping table that does not support 256QAM as a basis for transmitting data.
  • the advantage of this method is that the total number of modulation and coding scheme indexes (IMCS) in the 256QAM-supported mapping table stored in the 256QAM-capable UE is the same as the total number of modulation and coding scheme indexes (IMCS) in the mapping table that does not support 256QAM.
  • the total number of modulation coding schemes of the two mapping tables is the same, as exemplified in FIGS. 1 and 5, and the total number is 32. Since the mapping scheme supporting 256QAM removes some modulation schemes lower than 256QAM, the existing mapping table that does not support 256QAM can be different for different channel qualities, and there are multiple transport block size TBS policies for the same modulation scheme.
  • the modulation scheme using QPSK in the prior art has 0-9 items, and the total number is 10 QPSK schemes, wherein different QPSK schemes have different transport block sizes TBS.
  • the mapping table supporting the mapping table of 256QAM adds 256QAM due to the deletion of some existing modulation and coding schemes such as QPSK. Therefore, the scheduling strength of the prior art becomes large, and fine scheduling cannot be realized.
  • the fourth embodiment of the present invention is to overcome the excessive scheduling of the UE supporting 256QAM.
  • the problem of fine scheduling cannot be achieved, and the above problem is solved by simultaneously storing an existing mapping table that does not support 256QAM in the UE.
  • the specific plan is as follows:
  • the method includes:
  • Step 201 The UE sends capability level information to the eNB, where the capability level information indicates that the UE supports or does not support 256QAM.
  • the sending capability level information of the UE may be sent in the network access phase of the UE.
  • the timing of not transmitting the capability level information in this embodiment is the network access phase, and may also be sent in other processes.
  • Step 202 The UE sends channel quality information to the eNB.
  • the channel quality information may specifically be a Channel Quality Indicator (CQI).
  • CQI Channel Quality Indicator
  • Step 203 The eNB receives the capability level information sent by the UE, and stores the capability level information.
  • Step 204 The UE and the eNB determine an initial modulation mapping table, where the eNB and the UE both include: a mapping table supporting 256QAM and a mapping table not supporting 256QAM, where the initial modulation mapping table is a mapping table supporting 256QAM, or It is a mapping table that does not support 256QAM.
  • the initial modulation mapping table determined in step 204 may be a mapping table that does not support 256QAM by default, or a mapping table that supports 256QAM is used by default; or the mapping between the UE and the eNB may be determined to support 256QAM.
  • the table, or the mapping table that does not support 256QAM, is the initial modulation mapping table.
  • Step 205 The eNB receives channel quality information sent by the UE, and determines a modulation order and a TBS index according to the channel quality information.
  • Step 206 The eNB selects an initial modulation mapping table according to the stored capability level information, the determined modulation and coding scheme, and the TBS index, and determines an modulation and coding scheme index (IMCS).
  • IMCS modulation and coding scheme index
  • Step 207 the eNB sends a determination of the modulation and coding scheme index to the UE;
  • Step 208 The UE receives the modulation coding scheme index, determines the modulation order and the TBS index according to the initial modulation mapping table and the received modulation coding scheme index, and performs data transmission.
  • the UE first reports the capability level information, where the capability level information indicates that the UE supports or does not support 256QAM, and the UE also reports
  • the channel quality information is used by the eNB to determine a modulation order and a TBS index according to the channel quality information, and the eNB selects a mapping table corresponding to the capability level information according to the capability level information and the determined modulation order and the TBS index, and determines a modulation and coding scheme.
  • the modulation coding scheme index sent by the eNB received on the UE side since the eNB is the final modulation modulation scheme index according to the capability of the UE, therefore, the UE that supports 256QAM or the UE that does not support 256QAM can be accurate.
  • the modulation order and the TBS index are determined for data transmission. Therefore, in the method provided by the embodiment, the eNB can be compatible with the UE supporting 256QAM modulation and the UE not supporting the 256QAM modulation, which overcomes the problem that the eNB is incompatible.
  • mapping table that does not support 256QAM is also stored, so that the UE can implement not only high demodulated data transmission but also fine scheduling.
  • the eNB may control, according to the channel good state, or the usage of the radio resource, or other factors, the initial modulation mapping table determined before the UE supporting the 256QAM handover. Therefore, the method can further include:
  • the eNB sends a handover message to the UE supporting 256QAM modulation.
  • the switching message can be understood as the “first update information” mentioned in the first embodiment.
  • the specific implementation of the eNB sending the handover message to the UE supporting the 256QAM modulation in the step 209 may be: the eNB sends a radio resource control (RRC) message, and the RRC message carries the instruction of the handover mapping table.
  • the operation may be: adding a field in the RRC message to support switching of the two mapping tables.
  • the two mapping tables refer to: a mapping table supporting 256QAM and a mapping table not supporting 256QAM.
  • the specific implementation of the eNB transmitting the handover message to the UE supporting the 256QAM modulation in the step 209 may be: the eNB sends the downlink control information (DCI, Downlink Control Information) through the Physical Downlink Control Channel (PDCCH), which may be in the DCI.
  • DCI Downlink Control Information
  • PDCCH Physical Downlink Control Channel
  • One bit is added to indicate that the UE uses one of two mapping tables. For example, right In DCI format 1 (DCI format 1), DCI format 1A (DCI format 1A), one bit can be added in the TPC command for PUCCH field (field); or, for DCI format 2 (DCI format 2), in redundancy Add 1 bit to the version field.
  • the TPC is a shorthand for transmit power control
  • the PUCCH is short for the physical uplink control channel (Physical Uplink Control Channel).
  • the advantage of using the PDCCH method for handover is that it is real-time and supports real-time handover.
  • the two tables on the eNB side or the UE side may be one large table, the first half is not supporting the 256QAM mapping table, the second half is supporting the 256QAM mapping table, and the PDCCH payload control is used to support the 256QAM UE indication.
  • the 256QAM mapping part in the large table is not supported or the 256QAM mapping part is not supported.
  • the method further includes :
  • Step 210 The UE determines channel quality information, where the channel quality information includes a channel quality indicator.
  • Step 211 The UE determines, according to the channel quality information, whether to update the second modulation mapping table.
  • step 211 the UE determines, according to the channel quality information, whether to update the second modulation mapping table, specifically:
  • the UE determines to update the second modulation mapping table, and the updated second modulation mapping table Is the second low-order modulation mapping table; or,
  • the UE determines to update the second modulation mapping table, and the updated The second modulation mapping table is the second higher order modulation mapping table.
  • Step 212 The UE sends second update information to the base station, where the second update information is used to refer to The base station is shown to update the first modulation mapping table.
  • the second update information is carried by the radio resource control message.
  • the UE may request the base station to update the first modulation mapping table for the user by using an RRC reconfiguration request message; the base station determines a final modulation mapping table, and notifies the UE by using an RRC reconfiguration complete message to implement base station and UE modulation mapping. Consistency on the table.
  • the operation of controlling the handover of the mapping table by the radio resource control RRC message or the physical downlink control channel PDCCH described above is not exhaustive, and is merely an example that is easy to understand.
  • the embodiments of the present invention do not limit other specific switching operations.
  • the embodiment of the present invention provides a transmission method compatible with high-order modulation and low-order modulation, which is similar to the fourth embodiment, that is, a mapping table supporting 256QAM (or implicit mapping information) is included in a UE supporting 256QAM.
  • the implicit mapping information may be a mapping table supporting 256QAM.
  • the 256QAM-enabled UE also includes a mapping table (or explicit mapping information) that does not support 256QAM.
  • the explicit mapping information may be 256QAM. Mapping table).
  • the difference between the fifth embodiment and the fourth embodiment is that the specific information for the implicit information in the UE is used in the UE, and the channel quality information measured in the UE, such as CQI, is utilized.
  • the specific instructions are as follows:
  • the method includes:
  • Step 301 The UE sends capability level information to the eNB, where the capability level information indicates that the UE supports or does not support 256QAM.
  • the sending capability level information of the UE may be sent in the network access phase of the UE.
  • the timing of not transmitting the capability level information in this embodiment is the network access phase, and may also be sent in other processes.
  • Step 302 The UE sends channel quality information to the eNB.
  • the channel quality information may specifically be a Channel Quality Indicator (CQI).
  • CQI Channel Quality Indicator
  • Step 303 The eNB receives the capability level information sent by the UE, and stores the capability level information.
  • Step 304 The eNB receives channel quality information sent by the UE, and determines a modulation order and a TBS index according to the channel quality information.
  • the specific operation of determining the modulation order and the TBS index according to the channel quality information may be: the eNB acquires the traffic size information required by the UE, the CQI reported by the UE, and the current resource status of the eNB, and after comprehensive analysis, determines the modulation order. Number and TBS index.
  • Step 305 The eNB selects a mapping table corresponding to the capability level information according to the stored capability level information, the determined modulation order and the TBS index, and determines an modulation and coding scheme index (IMCS).
  • IMCS modulation and coding scheme index
  • the mapping table corresponding to the capability level information selected by the eNB is a mapping table that does not support 256QAM (also collectively referred to as: explicit mapping information), as shown in FIG. 1 .
  • a mapping table which is the same as the mapping table in the prior art;
  • the mapping table corresponding to the capability level information selected by the eNB is a mapping table supporting 256QAM (also collectively referred to as: implicit mapping information), as shown in FIG. 5 Mapping table.
  • the high-order mapping table in FIG. 5 has modulation order numbers M0, M1, ..., M31 respectively representing the modulation order.
  • the understanding of the table may be: assume that when the modulation order determined by the base station side is QPSK (ie, the sequence number is 2, that is, M0 is 2), and the determined TBS index is 0 (ie, T0 is 0), according to FIG.
  • the MCS index determined by the eNB is 0; or, when the MCS index determined by the eNB is still 0, but the corresponding modulation order number and the TBS index in the mapping table are different, that is, M0 is 8 (ie, 256QAM), T0 is 1. It can be understood that when the MCS index is 0, (M0, T0) may have one or more values. Similarly, when the MCS index is i, (Mi, Ti) may have one or more values. The eNB determines the value of the MCS index according to the mapping table shown in FIG. 5 according to the specific value of the obtained (Mi, Ti), where the value of i is (0, 31).
  • (Mi, Ti) can be understood as implicit mapping information.
  • Step 306 Send the determined modulation and coding scheme index to the UE.
  • Step 307 The UE receives the modulation and coding scheme index.
  • the UE selects one of the stored implicit mapping information or the stored explicit mapping information according to the measured channel quality information (or it may be understood that the UE stores the support location.
  • the stored second low-order modulation map is displayed to display information.
  • the UE selects one of the implicit mapping information or the explicit mapping information according to the measured channel quality information, and may specifically reflect the channel quality according to CQI, signal to noise ratio, or other one or combination.
  • Inferior parameters can be collectively referred to as channel quality information).
  • the UE When the channel quality information reflects that the channel quality is higher than indicating an excellent threshold, for example, if the CQI is greater than (or equal to) a threshold value indicating that the channel is excellent, or the signal to noise ratio is greater than a threshold indicating that the channel is excellent, the UE adopts an implicit manner.
  • the mapping information may be an implicit mapping table or an implicit mapping information in a large table.
  • the UE adopts explicit mapping information
  • the explicit mapping information may be an explicit mapping table or an explicit mapping information in a large table, and the explicit mapping information may be specifically as shown in FIG. 1 .
  • Step 308 if the implicit mapping information is selected, the UE determines the implicit information of the modulation order and the TBS index according to the received modulation coding scheme index and the implicit mapping information; and implicitly according to the determined modulation order and the TBS index. Information, as well as measured channel quality information, determines the modulation order and the TBS index.
  • the implicit mapping information when the implicit mapping information is selected, the implicit mapping information may be exemplified in FIG. 5, and the UE according to the received modulation coding scheme index and implicit mapping information. Determining the modulation order and the implicit information of the TBS index may specifically include: if the UE receives the modulation coding scheme index (IMCS) of 1, according to the implicit mapping information shown in FIG. 5, the determined modulation order and The implicit information of the TBS index is (M1, T1);
  • IMCS modulation coding scheme index
  • the UE determines the modulation order and the TBS index according to the determined modulation order and the implicit information of the TBS index, and the measured channel quality information, and specifically includes: the implicit information of the UE according to the determined modulation order and the TBS index is ( M1, T1), and the channel quality information (such as CQI) measured by the UE. If the channel quality information has excellent channel quality, the determined modulation order can be higher order, and the transport block size can be selected larger. Otherwise, the selection is The opposite of. For the implicit information of (M1, T1) as shown in FIG. 5, there are two cases of values (2, 6) and (4, 9), if the measured channel quality is greater than (or equal to) the second gate.
  • the limit value indicates that the channel quality is good, then the value of (M1, T1) is (4, 9), that is, The selected modulation coding mode is 16QAM, and the transport block size (TBS) index is 9.
  • FIG. 5 is an example for facilitating understanding of implicit mapping information, and is not a limitation of the embodiments of the present invention.
  • the value of the implicit information such as (Mi, Ti) may be one or more, and is not limited to the value of 2 exemplified in FIG. 5, and an implicit information such as (Mi, Ti) is taken. The more the value is divided, the more detailed the division of the channel quality is, and the corresponding UE will use the modulated code to transmit the data, which is beneficial to the correct demodulation of the peer.
  • Step 309 The UE selects explicit mapping information, and the UE determines the modulation order and the TBS index according to the received modulation and coding scheme index and the explicit mapping information.
  • Step 310 The UE performs data transmission according to the modulation order determined by step 308 or step 309 and the TBS index.
  • the UE first reports the capability level information, where the capability level information indicates that the UE supports or does not support 256QAM, and the UE also reports channel quality information, and is used by the eNB to determine the modulation order according to the channel quality information.
  • the eNB selects a mapping table corresponding to the capability level information according to the capability level information, and the determined modulation order and the TBS index, and determines a modulation coding scheme index, and a modulation coding scheme index sent by the eNB received by the UE side, Since the eNB is the finally determined modulation coding scheme index according to the capability of the UE, the UE that supports 256QAM or the UE that does not support 256QAM can accurately determine the modulation order and the TBS index, thereby performing data transmission. Therefore, in the method provided by the embodiment, the eNB can be compatible with the UE supporting 256QAM modulation and the UE not supporting the 256QAM modulation, which overcomes the problem that the eNB is incompatible.
  • mapping information supporting 256QAM and the mapping information not supporting 256QAM are respectively stored in the form of explicit mapping information and implicit mapping information, so that the UE can not only achieve high demodulation. Data transmission can also achieve fine scheduling at the same time.
  • the method further includes:
  • Step 311 the UE sends channel quality information, where the channel quality information includes a channel quality indicator CQI;
  • Step 312 the base station receives channel quality information reported by the user equipment, the channel quality information includes a channel quality indicator CQI;
  • Step 313 The base station determines, according to the channel quality information, whether to update the first modulation mapping table.
  • the determining, by the base station, in step 313, whether to update the first modulation mapping table according to the channel quality information includes:
  • the base station determines to update the first modulation mapping table, and the updated first modulation
  • the mapping table is the first low-order modulation mapping table
  • the base station determines to update the first modulation mapping table, after updating
  • the first modulation mapping table is the first high-order modulation mapping table.
  • Step 314 The base station sends first update information to the user equipment, where the first update information is used to instruct the user equipment to update a second modulation mapping table, where the second modulation mapping table is used for the base station
  • the communication is the second higher order modulation mapping table or the second low order modulation mapping table.
  • the first update information may be carried by the radio resource control message, or the first update information is transmitted through the physical layer downlink control channel.
  • An embodiment of the present invention provides a base station, where the high-order modulation includes 256 orthogonal amplitude modulation QAM, and the low-order modulation includes at least one of 64QAM, 16QAM, and quadrature phase shift keying QPSK, such as As shown in Figure 8, it includes:
  • the first receiving unit 801 is configured to receive capability level information sent by the user equipment, where the capability level information is used to indicate that the user equipment supports the high-order modulation or supports the low-order modulation;
  • the determining unit 802 is configured to determine, according to the capability level information sent by the user equipment, a first modulation mapping table used for communication with the user equipment, where the first modulation mapping table is the first high a modulation map or a first low order modulation map;
  • the determining unit 802 is further configured to determine, according to the modulation mapping table, a modulation and coding scheme index, where the modulation and coding scheme index is used by the user equipment to determine a modulation and coding scheme;
  • the first sending unit 803 is configured to send the modulation and coding scheme index to the user equipment
  • the first storage unit 804 is configured to store a first high-order modulation mapping table that supports the high-order modulation, and a first low-order modulation mapping table that supports the low-order modulation.
  • the base station stores a first high-order modulation mapping table supporting the high-order modulation, and a first low-order modulation mapping table supporting the low-order modulation, where the base station receives the transmission sent by the user equipment.
  • a capability level information the base station determines, according to the capability level information sent by the user equipment, a first modulation mapping table used for communication with the user equipment; the base station determines a modulation and coding scheme index according to the modulation mapping table, where The modulation and coding scheme index is used by the user equipment to determine a modulation and coding scheme; the modulation and coding scheme index is sent to the user equipment; therefore, whether the UE supporting 256QAM or the UE not supporting 256QAM can accurately determine the modulation
  • the coding scheme is indexed for data transmission. Therefore, in the method provided by the embodiment, the eNB can be compatible with the UE supporting 256QAM modulation and the UE not supporting the 256QAM modulation, which overcomes the problem that the eNB
  • determining, by the determining unit, the first modulation mapping table used for communication with the user equipment according to the capability level information sent by the user equipment including:
  • the base station determines that the modulation mapping table is the first high-order modulation mapping table; wherein the user equipment stores the support A second higher order modulation map of higher order modulation.
  • determining, by the determining unit, the first modulation mapping table used for communication with the user equipment according to the capability level information sent by the user equipment including:
  • the base station determines that the first modulation mapping table is the first high Order modulation mapping table; or,
  • the base station determines that the first modulation mapping table is the first low-order modulation mapping table.
  • the user equipment stores a second high-order modulation mapping table supporting the high-order modulation, and a second low-order modulation mapping table supporting the low-order modulation.
  • the user equipment when the user equipment stores a second high-order modulation mapping table that supports the high-order modulation, and a second low-order modulation mapping table that supports the low-order modulation,
  • the first receiving unit is further configured to receive channel quality information reported by the user equipment, where the channel quality information includes a channel quality indicator CQI;
  • the determining unit is further configured to determine, according to the channel quality information, whether to update the first modulation mapping table.
  • determining, by the determining unit, whether to update the first modulation mapping table according to the channel quality information includes:
  • the base station determines to update the first modulation mapping table, and the updated first modulation
  • the mapping table is the first low-order modulation mapping table
  • the base station determines to update the first modulation mapping table, after updating
  • the first modulation mapping table is the first high-order modulation mapping table.
  • the first sending unit is further configured to send first update information to the user equipment, where the first update information is used to instruct the user equipment to update a second modulation mapping table, where the second modulation
  • the mapping table is configured to communicate with the base station, and is the second higher order modulation mapping table or the second low order modulation mapping table.
  • the user equipment when the user equipment stores a second high-order modulation mapping table that supports the high-order modulation, and a second low-order modulation mapping table that supports the low-order modulation,
  • the first receiving unit is further configured to receive second update information that is sent by the device, where the second update information is used to instruct the base station to update the first modulation mapping table.
  • the first update information or the second update information is carried by a radio resource control message.
  • the first update information is transmitted through a physical layer downlink control channel.
  • the embodiment of the present invention provides a user equipment, as shown in FIG. 9, the device includes: a second sending unit 901, a second receiving unit 902, a second determining unit 903, and a second storage unit 904;
  • the second sending unit 901 is configured to send capability level information to the base station, where the capability level information is used to indicate that the user equipment supports high-order modulation or low-order modulation; wherein the high-order modulation includes 256 orthogonal amplitudes.
  • the second receiving unit 902 is configured to receive a modulation and coding scheme index that is sent by the base station, where the modulation and coding scheme index is determined by the base station according to a first modulation mapping table, where the first modulation mapping table is a high-order modulation mapping table or the first low-order modulation mapping table;
  • the second determining unit 903 is configured to determine a second modulation mapping table that is in communication with the base station, and determine a modulation and coding scheme according to the second modulation mapping table and the modulation and coding scheme index;
  • the second storage unit 904 is configured to store at least one of a second high-order modulation mapping table supporting the high-order modulation and a second low-order modulation mapping table supporting the low-order modulation, where The second modulation mapping table is the second higher order modulation mapping table or the second low order modulation mapping table.
  • the user equipment sends capability level information to the base station, receives a modulation and coding scheme index sent by the base station, and the user equipment determines a second modulation mapping table that is in communication with the base station, and according to the foregoing a second modulation mapping table and the modulation and coding scheme index determining a modulation and coding scheme; wherein the user equipment stores at least a second high-order modulation mapping table supporting the high-order modulation and a second low supporting the low-order modulation One of the order modulation mapping tables; enabling the eNB to be compatible with UEs supporting 256QAM modulation and UEs not supporting 256QAM modulation, The problem of incompatibility of prior art eNBs is overcome.
  • the user equipment when the user equipment stores a second high-order modulation mapping table that supports the high-order modulation,
  • a second modulation mapping table that is in communication with the base station, including:
  • the second higher order modulation map is used by default as the second modulation map.
  • the user equipment when the user equipment stores a second high-order modulation mapping table that supports the high-order modulation and a second low-order modulation mapping table that supports the low-order modulation,
  • a second modulation mapping table that is in communication with the base station, including:
  • the user equipment determines that the second modulation mapping table is the second higher order modulation mapping table.
  • the user equipment determines that the second modulation mapping table is the second low order modulation mapping table.
  • the second storage unit stores the second high-order modulation mapping table that supports the high-order modulation and the second low-order modulation mapping table that supports the low-order modulation
  • the second sending unit is further configured to send channel quality information to the base station, where the channel quality information is used by the base station to determine whether to update the first modulation mapping table, where the channel quality information includes a channel quality indicator CQI.
  • the second receiving unit is further configured to receive first update information sent by the base station;
  • the user equipment further includes: an updating unit, configured to update the second modulation mapping table according to the first update information.
  • the second storage unit stores the second high-order modulation mapping table that supports the high-order modulation and the second low-order modulation mapping table that supports the low-order modulation
  • the second determining unit is further configured to determine channel quality information, where the channel quality information includes a channel quality indicator, and determine, according to the channel quality information, whether to update the second modulation mapping table.
  • determining, by the second determining unit, whether to update the second modulation mapping table according to the channel quality information includes:
  • the user equipment determines to update the second modulation mapping table, and the updated second The modulation mapping table is the second low-order modulation mapping table;
  • the user equipment determines to update the second modulation mapping table, and updates The second modulation mapping table is the second higher order modulation mapping table.
  • the second sending unit is further configured to send second update information to the base station, where the second update information is used to instruct the base station to update the first modulation mapping table.
  • the first update information or the second update information is carried by a radio resource control message.
  • the first update information is transmitted through a physical layer downlink control channel.
  • the embodiment of the present invention further provides a base station.
  • the schematic diagram of the structure is as shown in FIG. 10, including a memory 40, a processor 41, an input device 43, and an output device 44 respectively connected to the bus, where:
  • the memory 40 is configured to store data input from the input device 43, and may also store information such as necessary files processed by the processor 41;
  • the high-order modulation includes 256 quadrature amplitude modulation QAM, and the low-order modulation includes at least one of 64QAM, 16QAM, and quadrature phase shift keying QPSK;
  • the input device 43 is configured to receive capability level information sent by the user equipment, where the capability level information is used to indicate that the user equipment supports the high-order modulation or supports the low-order modulation;
  • the processor 41 is configured to determine, according to the capability level information sent by the user equipment, a first modulation mapping table used for communication with the user equipment, where the first modulation mapping table is the first high-order modulation mapping table. Or the first low-order modulation mapping table; determining, according to the modulation mapping table, a modulation and coding scheme index, where the modulation and coding scheme index is used by the user equipment to determine a modulation and coding scheme;
  • the output device 44 is configured to send the modulation and coding scheme index to the user equipment
  • the memory 40 is further configured to: the base station stores a first high-order modulation mapping table that supports the high-order modulation, and a first low-order modulation mapping table that supports the low-order modulation,
  • the base station stores a first high-order modulation mapping table supporting the high-order modulation, and a first low-order modulation mapping table supporting the low-order modulation, where the base station receives the transmission sent by the user equipment.
  • a capability level information the base station determines, according to the capability level information sent by the user equipment, a first modulation mapping table used for communication with the user equipment; the base station determines a modulation and coding scheme index according to the modulation mapping table, where The modulation and coding scheme index is used by the user equipment to determine a modulation and coding scheme; the modulation and coding scheme index is sent to the user equipment; therefore, whether the UE supporting 256QAM or the UE not supporting 256QAM can accurately determine the modulation
  • the coding scheme is indexed for data transmission. Therefore, in the method provided by the embodiment, the eNB can be compatible with the UE supporting 256QAM modulation and the UE not supporting the 256QAM modulation, which overcomes the problem that the eNB
  • the determining, by the processor 41, the first modulation mapping table used for communication with the user equipment according to the capability level information sent by the user equipment including:
  • the base station determines that the modulation mapping table is the first high-order modulation mapping table; wherein the user equipment stores the support A second higher order modulation map of higher order modulation.
  • the determining, by the processor 41, the first modulation mapping table used for communication with the user equipment according to the capability level information sent by the user equipment including:
  • the base station determines that the first modulation mapping table is the first high-order modulation mapping table. ;or,
  • the base station determines that the first modulation mapping table is the first low-order modulation mapping table.
  • the user equipment stores a second high-order modulation mapping table supporting the high-order modulation, and a second low-order modulation mapping table supporting the low-order modulation.
  • the user equipment when the user equipment stores a second high-order modulation mapping table that supports the high-order modulation, and a second low-order modulation mapping table that supports the low-order modulation,
  • the input device 43 is further configured to receive channel quality information reported by the user equipment, where the channel quality information includes a channel quality indicator CQI;
  • the processor 41 is further configured to determine, according to the channel quality information, whether to update the first modulation mapping table.
  • determining, by the processor 41, whether to update the first modulation mapping table according to the channel quality information includes:
  • the base station determines to update the first modulation mapping table, and the updated first modulation
  • the mapping table is the first low-order modulation mapping table
  • the base station determines to update the first modulation mapping table, and the updated first modulation The mapping table is the first higher order modulation mapping table.
  • the output device 44 is further configured to send the first update information to the user equipment, where the first update information is used to instruct the user equipment to update a second modulation mapping table, where the second modulation mapping table is used. And communicating with the base station, the second high-order modulation mapping table or the second low-order modulation mapping table.
  • the user equipment when the user equipment stores a second high-order modulation mapping table that supports the high-order modulation, and a second low-order modulation mapping table that supports the low-order modulation,
  • the output device 44 is further configured to receive second update information that is sent by the device, where the second update information is used to instruct the base station to update the first modulation mapping table.
  • the first update information or the second update information is carried by a radio resource control message.
  • the first update information is transmitted through a physical layer downlink control channel.
  • the embodiment of the present invention further provides a user equipment.
  • the schematic diagram of the structure is as shown in FIG. 11, and includes a memory 50, a processor 51, an input device 53, and an output device 54 respectively connected to the bus, where:
  • the memory 50 is used to store data input from the input device 53, and may also store information such as necessary files for processing the data by the processor 51;
  • the output device 54 is configured to send capability level information to the base station, where the capability level information is used to indicate that the user equipment supports high-order modulation or low-order modulation; wherein the high-order modulation includes 256 quadrature amplitude modulation QAM, The low-order modulation includes at least one of 64QAM, 16QAM, and quadrature phase shift keying QPSK, the base station storing a first high-order modulation mapping table supporting the high-order modulation, and a first supporting low-order modulation. Low order modulation mapping table;
  • the input device 53 is configured to receive a modulation and coding scheme index sent by the base station, where the modulation and coding scheme index is determined by the base station according to a first modulation mapping table, where the first modulation mapping table is the first high-order modulation a mapping table or the first low-order modulation mapping table;
  • the processor 51 is configured to determine a second modulation mapping table that is in communication with the base station, and determine a modulation and coding scheme according to the second modulation mapping table and the modulation and coding scheme index;
  • the memory 50 is configured to store at least one of a second high-order modulation mapping table supporting the high-order modulation and a second low-order modulation mapping table supporting the low-order modulation, where the second modulation mapping table is The second higher order modulation map or the second low order modulation map.
  • the user equipment sends capability level information to the base station, receives a modulation and coding scheme index sent by the base station, and the user equipment determines a second modulation mapping table that is in communication with the base station, and according to the foregoing a second modulation mapping table and the modulation and coding scheme index determining a modulation and coding scheme; wherein the user equipment stores at least a second high-order modulation mapping table supporting the high-order modulation and a second low supporting the low-order modulation One of the order modulation mapping tables; enabling the eNB to provide services for UEs supporting 256QAM modulation and UEs not supporting 256QAM modulation, overcoming the problem of incompatibility of the prior art eNB.
  • a second modulation mapping table that is in communication with the base station, including:
  • the second higher order modulation map is used by default as the second modulation map.
  • the memory 50 stores a second high-order modulation mapping table supporting the high-order modulation and a second low-order modulation mapping table supporting the low-order modulation
  • a second modulation mapping table that is in communication with the base station, including:
  • the user equipment determines that the second modulation mapping table is the second high order modulation mapping table.
  • the user equipment determines that the second modulation mapping table is the second low order modulation mapping table.
  • the memory 50 stores a second high-order modulation mapping table supporting the high-order modulation and a second low-order modulation mapping table supporting the low-order modulation
  • the output device 54 is further configured to send channel quality information to the base station, where the channel quality information is used by the base station to determine whether to update the first modulation mapping table, where the channel quality information includes a channel quality indicator CQI.
  • the input device 53 is further configured to receive the first update information sent by the base station;
  • the processor 51 is further configured to update the second modulation mapping table according to the first update information.
  • the memory 50 stores a second high-order modulation mapping table supporting the high-order modulation and a second low-order modulation mapping table supporting the low-order modulation
  • the processor 51 is further configured to determine channel quality information, where the channel quality information includes a channel quality indicator, and determine, according to the channel quality information, whether to update the second modulation mapping table.
  • determining, by the processor 51, whether to update the second modulation mapping table according to the channel quality information includes:
  • the user equipment determines to update the second modulation mapping table, and the updated second The modulation mapping table is the second low-order modulation mapping table;
  • the user equipment determines to update the second modulation mapping table, and the updated The second modulation mapping table is the second higher order modulation mapping table.
  • the output device 54 is further configured to send, to the base station, second update information, where the second update information is used to instruct the base station to update the first modulation mapping table.
  • the first update information or the second update information is carried by a radio resource control message.
  • the first update information is transmitted through a physical layer downlink control channel.

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Abstract

本发明实施例公开了一种兼容高阶调制和低阶调制的传输方法、装置。其中，基站存储有支持所述高阶调制的第一高阶调制映射表，以及支持所述低阶调制的第一低阶调制映射表，所述基站接收用户设备发送的能力等级信息；所述基站根据所述用户设备发送的能力等级信息，确定用于与所述用户设备通信的第一调制映射表；所述基站根据所述调制映射表确定调制编码方案索引，所述调制编码方案索引用于所述用户设备确定调制编码方案；向所述用户设备发送所述调制编码方案索引。本实施例提供技术方案，基站能够兼容地为支持256QAM调制的UE和不支持支持256QAM调制的UE提供服务，克服了现有技术基站不兼容的问题。

Description

一种兼容高阶调制和低阶调制的传输方法、装置
本申请要求于2013年11月22日提交中国专利局、申请号为201310598181.8、发明名称为“一种兼容高阶调制和低阶调制的传输方法、装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域，具体涉及一种兼容高阶调制和低阶调制的传输方法、装置。
背景技术
高阶调制技术是在不增加传输带宽的前提下，为了提高传输的数据量而引入的技术。现阶段在长期演进(LTE，Long Time Evolution)技术下通常的高阶调制技术最高阶为64阶正交幅度调制(即64QAM，Quadrature Amplitude Modulation)。随着技术的发展，256QAM相对于目前的64QAM而言，理论增益为33％，因为在256QAM场景下，每个资源粒子(RE，Resource Element)能够携带8比特(bit)数据量，相比而言，在64QAM场景下，每个RE只能携带6bit数据量，所以，在相同RE场景下，256QAM可传输的数据量比64QAM可传输数据量增加33％。
在第三代合作伙伴计划(3GPP，3rd Generation Partnership Program)中规定，基站侧和用户终端(UE，User Equipment)侧都存储有映射表，如图1所示，该映射表包括：调制编码方案(MCS，Modulation Code Schedule)索引(Index)(即IMCS)，调制阶数(Modulation Order)，传输块大小索引(TBS Index，Transmission Block Size)(即ITBS)。基站侧通过发送IMCS来通知UE，使得UE根据IMCS在映射表中选择对应的调制阶数和传输块大小索引，进行后续的数据处理。从图1所示的映射表可以看出，现有3GPP规定中，并未支持256QAM。其中，图1中调制阶数序号(Modulation Order)2、4、6分别代表QPSK，16QAM，以及64QAM。
为了支持256QAM，现有技术方案直接修改映射表，仍然保持如图1所示表格的IMCS总数为32个，在该32个调制阶数中，删除了部分调制阶数，由 新增的256QAM调制阶数代替，从而实现了UE可以采用256QAM调制阶数传输数据。
但是，现有技术中基站侧在为支持256QAM的UE提供服务的情况，未考虑对还不支持256QAM的UE的兼容性问题，导致现有技术中基站不能同时为支持256QAM调制的UE和不支持256QAM调制的UE的服务，不具有兼容性，导致其中之一的UE不能解调出基站发送的数据。
发明内容
本发明实施例提供了一种兼容高阶调制和低阶调制的传输方法、装置，能够兼容地为支持256QAM调制的UE和不支持支持256QAM调制的UE提供服务，克服了现有技术不兼容的问题。
本发明实施例第一方面提供了一种用于基站兼容高阶调制和低阶调制的传输方法，所述高阶调制包括256正交幅度调制QAM，所述低阶调制包括64QAM、16QAM以及正交相移键控QPSK中的至少一种，所述基站存储有支持所述高阶调制的第一高阶调制映射表，以及支持所述低阶调制的第一低阶调制映射表，所述方法包括：
所述基站接收用户设备发送的能力等级信息，所述能力等级信息用于表示所述用户设备支持所述高阶调制或支持所述低阶调制；
所述基站根据所述用户设备发送的能力等级信息，确定用于与所述用户设备通信的第一调制映射表，所述第一调制映射表为所述第一高阶调制映射表或所述第一低阶调制映射表；
所述基站根据所述调制映射表确定调制编码方案索引，所述调制编码方案索引用于所述用户设备确定调制编码方案；
所述基站向所述用户设备发送所述调制编码方案索引。
本发明实施例第一方面的第一种可能的实现方式中，所述基站根据所述用户设备发送的能力等级信息，确定用于与所述用户设备通信的第一调制映射表，包括：
当所述能力等级信息表示所述用户设备支持所述高阶调制时，所述基站确 定所述调制映射表为所述第一高阶调制映射表；其中，所述用户设备存储有支持所述高阶调制的第二高阶调制映射表。
本发明实施例第一方面的第二种可能的实现方式中，所述基站根据所述用户设备发送的能力等级信息，确定用于与所述用户设备通信的第一调制映射表，包括：
当所述能力等级信息表示所述用户设备支持所述高阶调制，且信号干扰噪声比SINR大于SINR门限时，所述基站确定所述第一调制映射表为所述第一高阶调制映射表；或者，
当所述能力等级信息表示所述用户设备支持所述高阶调制，且信号干扰噪声比SINR小于SINR门限时，所述基站确定所述第一调制映射表为所述第一低阶调制映射表；
其中，所述用户设备存储有支持所述高阶调制的第二高阶调制映射表，以及支持所述低阶调制的第二低阶调制映射表。
结合本发明实施例第一方面，或者第一方面第一种至第二种任一项可能的实现方式，本发明实施例第一方面的第三种可能的实现方式中，当所述用户设备存储有支持所述高阶调制的第二高阶调制映射表，以及支持所述低阶调制的第二低阶调制映射表时，所述方法还包括：
所述基站接收所述用户设备上报的信道质量信息，所述信道质量信息包括信道质量指示符CQI；
所述基站根据所述信道质量信息，确定是否更新所述第一调制映射表。
结合本发明实施例第一方面第三种可能的实现方式，本发明实施例第一方面的第四种可能的实现方式中，所述基站根据所述信道质量信息，确定是否更新所述第一调制映射表，包括：
当所述第一调制映射表为所述第一高阶调制映射表，且所述信道质量信息小于信道质量门限时，所述基站确定更新所述第一调制映射表，更新后的第一调制映射表为所述第一低阶调制映射表；或者，
当所述第一调制映射表为所述第二低阶调制映射表，且所述信道质量信息 大于信道质量门限时，所述基站确定更新所述第一调制映射表，更新后的第一调制映射表为所述第一高阶调制映射表。
结合本发明实施例第一方面第四种可能的实现方式，本发明实施例第一方面的第五种可能的实现方式中，所述方法还包括：
所述基站向所述用户设备发送第一更新信息，所述第一更新信息用于指示所述用户设备更新第二调制映射表，所述第二调制映射表用于与所述基站通信，为所述第二高阶调制映射表或所述第二低阶调制映射表。
结合本发明实施例第一方面，或者第一方面第一种至第二种任一项可能的实现方式，本发明实施例第一方面的第六种可能的实现方式中，当所述用户设备存储有支持所述高阶调制的第二高阶调制映射表，以及支持所述低阶调制的第二低阶调制映射表时，所述方法还包括：
所述基站接收所述用设备发送的第二更新信息，所述第二更新信息用于指示所述基站更新所述第一调制映射表。
结合本发明实施例第一方面第五种至第六种任一项可能的实现方式，本发明实施例第一方面的第七种可能的实现方式中，所述第一更新信息或所述第二更新信息由无线资源控制消息承载。
结合本发明实施例第一方面第五种至第六种任一项可能的实现方式，本发明实施例第一方面的第八种可能的实现方式中，所述第一更新信息通过物理层下行控制信道传输。
本发明实施例第二方面一种用于用户设备的传输方法，包括：
所述用户设备向基站发送能力等级信息，所述能力等级信息用于表示所述用户设备支持高阶调制或低阶调制；其中，所述高阶调制包括256正交幅度调制QAM，所述低阶调制包括64QAM、16QAM以及正交相移键控QPSK中的至少一种，所述基站存储有支持所述高阶调制的第一高阶调制映射表，以及支持低阶调制的第一低阶调制映射表；
所述用户设备接收所述基站发送的调制编码方案索引，所述调制编码方案索引由所述基站根据第一调制映射表确定，所述第一调制映射表为所述第一高 阶调制映射表或所述第一低阶调制映射表；
所述用户设备确定与所述基站通信的第二调制映射表，并根据所述第二调制映射表和所述调制编码方案索引确定调制编码方案；
其中，所述用户设备至少存储有支持所述高阶调制的第二高阶调制映射表和支持所述低阶调制的第二低阶调制映射表中的一种，所述第二调制映射表为所述第二高阶调制映射表或所述第二低阶调制映射表。
本发明实施例第二方面的第一种可能的实现方式中，当所述用户设备存储有支持所述高阶调制的第二高阶调制映射表时，所述用户设备确定与所述基站通信的第二调制映射表，包括：
所述用户设备默认使用所述第二高阶调制映射表为所述第二调制映射表。
本发明实施例第二方面的第二种可能的实现方式中，当所述用户设备存储有支持所述高阶调制的第二高阶调制映射表和支持所述低阶调制的第二低阶调制映射表时，所述用户设备确定与所述基站通信的第二调制映射表，包括：
当信号干扰噪声比SINR大于SINR门限时，所述用户设备确定所述第二调制映射表为所述第二高阶调制映射表；或者，
当信号干扰噪声比SINR小于SINR门限时，所述用户设备确定所述第二调制映射表为所述第二低阶调制映射表。
结合本发明实施例第二方面，或者第二方面第一种至第二种任一项可能的实现方式，本发明实施例第二方面的第三种可能的实现方式中，当所述用户设备存储有支持所述高阶调制的第二高阶调制映射表和支持所述低阶调制的第二低阶调制映射表时，所述方法还包括：
所述用户设备向所述基站发送信道质量信息，所述信道质量信息用于所述基站确定是否更新所述第一调制映射表，所述信道质量信息包括信道质量指示符CQI。
结合本发明实施例第二方面第三种可能的实现方式，本发明实施例第二方面的第四种可能的实现方式中，所述方法还包括：
所述用户设备接收所述基站发送的第一更新信息，并根据所述第一更新信息更新所述第二调制映射表。
结合本发明实施例第二方面，或者第二方面第一种至第二种任一项可能的实现方式，本发明实施例第二方面的第五种可能的实现方式中，当所述用户设备存储有支持所述高阶调制的第二高阶调制映射表和支持所述低阶调制的第二低阶调制映射表时，所述方法还包括：
所述用户设备确定信道质量信息，所述信道质量信息包括信道质量指示符；
所述用户设备根据所述信道质量信息，确定是否更新所述第二调制映射表。
结合本发明实施例第二方面第五种可能的实现方式，本发明实施例第二方面的第六种可能的实现方式中，所述用户设备根据所述信道质量信息，确定是否更新所述第二调制映射表，包括：
当所述第二调制映射表为所述第二高阶调制映射表，且所述信道质量信息小于信道质量门限时，所述用户设备确定更新所述第二调制映射表，更新后的第二调制映射表为所述第二低阶调制映射表；或者，
当所述第二调制映射表为所述第二低阶调制映射表，且所述信道质量信息大于信道质量门限时，所述用户设备确定更新所述第二调制映射表，更新后的第二调制映射表为所述第二高阶调制映射表。
结合本发明实施例第二方面第六种可能的实现方式，本发明实施例第二方面的第七种可能的实现方式中，所述方法还包括：
所述用户设备向所述基站发送第二更新信息，所述第二更新信息用于指示所述基站更新所述第一调制映射表。
结合本发明实施例第二方面第四种可能的实现方式，或者第二方面第七种可能的实现方式，本发明实施例第二方面的第八种可能的实现方式中，所述第一更新信息或所述第二更新信息由无线资源控制消息承载。
结合本发明实施例第二方面第四种可能的实现方式，或者第二方面第七种 可能的实现方式，本发明实施例第二方面的第九种可能的实现方式中，所述第一更新信息通过物理层下行控制信道传输。
本发明实施例第三方面一种基站，所述高阶调制包括256正交幅度调制QAM，所述低阶调制包括64QAM、16QAM以及正交相移键控QPSK中的至少一种，所述基站包括：
第一接收单元，确定单元，第一发送单元，和第一存储单元；
所述第一接收单元，用于接收用户设备发送的能力等级信息，所述能力等级信息用于表示所述用户设备支持所述高阶调制或支持所述低阶调制；
所述确定单元，用于根据所述用户设备发送的能力等级信息，确定用于与所述用户设备通信的第一调制映射表，所述第一调制映射表为所述第一高阶调制映射表或所述第一低阶调制映射表；
所述确定单元，还用于根据所述调制映射表确定调制编码方案索引，所述调制编码方案索引用于所述用户设备确定调制编码方案；
所述第一发送单元，用于向所述用户设备发送所述调制编码方案索引；
所述第一存储单元，用于所述基站存储有支持所述高阶调制的第一高阶调制映射表，以及支持所述低阶调制的第一低阶调制映射表，
本发明实施例第三方面的第一种可能的实现方式中，所述确定单元中根据所述用户设备发送的能力等级信息，确定用于与所述用户设备通信的第一调制映射表，包括：
当所述能力等级信息表示所述用户设备支持所述高阶调制时，所述基站确定所述调制映射表为所述第一高阶调制映射表；其中，所述用户设备存储有支持所述高阶调制的第二高阶调制映射表。
本发明实施例第三方面的第二种可能的实现方式中，所述确定单元中根据所述用户设备发送的能力等级信息，确定用于与所述用户设备通信的第一调制映射表，包括：
当所述能力等级信息表示所述用户设备支持所述高阶调制，且信号干扰噪 声比SINR大于SINR门限时，所述基站确定所述第一调制映射表为所述第一高阶调制映射表；或者，
当所述能力等级信息表示所述用户设备支持所述高阶调制，且信号干扰噪声比SINR小于SINR门限时，所述基站确定所述第一调制映射表为所述第一低阶调制映射表；
其中，所述用户设备存储有支持所述高阶调制的第二高阶调制映射表，以及支持所述低阶调制的第二低阶调制映射表。
结合本发明实施例第三方面，或者第三方面第一种至第二种任一项可能的实现方式，本发明实施例第三方面的第三种可能的实现方式中，当所述用户设备存储有支持所述高阶调制的第二高阶调制映射表，以及支持所述低阶调制的第二低阶调制映射表时，
所述第一接收单元，还用于接收所述用户设备上报的信道质量信息，所述信道质量信息包括信道质量指示符CQI；
所述确定单元，还用于根据所述信道质量信息，确定是否更新所述第一调制映射表。
结合本发明实施例第三方面第三种可能的实现方式，本发明实施例第三方面的第四种可能的实现方式中，所述确定单元中根据所述信道质量信息，确定是否更新所述第一调制映射表，包括：
当所述第一调制映射表为所述第一高阶调制映射表，且所述信道质量信息小于信道质量门限时，所述基站确定更新所述第一调制映射表，更新后的第一调制映射表为所述第一低阶调制映射表；或者，
当所述第一调制映射表为所述第二低阶调制映射表，且所述信道质量信息大于信道质量门限时，所述基站确定更新所述第一调制映射表，更新后的第一调制映射表为所述第一高阶调制映射表。
结合本发明实施例第三方面第四种可能的实现方式，本发明实施例第三方面的第五种可能的实现方式中，所述第一发送单元，还用于向所述用户设备发送第一更新信息，所述第一更新信息用于指示所述用户设备更新第二调制映射 表，所述第二调制映射表用于与所述基站通信，为所述第二高阶调制映射表或所述第二低阶调制映射表。
结合本发明实施例第三方面，或者第三方面第一种至第二种任一项可能的实现方式，本发明实施例第三方面的第六种可能的实现方式中，当所述用户设备存储有支持所述高阶调制的第二高阶调制映射表，以及支持所述低阶调制的第二低阶调制映射表时，
所述第一接收单元，还用于接收所述用设备发送的第二更新信息，所述第二更新信息用于指示所述基站更新所述第一调制映射表。
结合本发明实施例第三方面第五种可能的实现方式，或者，本发明实施例第三方面第六种可能的实现方式，本发明实施例第二方面的第七种可能的实现方式中，所述第一更新信息或所述第二更新信息由无线资源控制消息承载。
结合本发明实施例第三方面第五种可能的实现方式，或者，本发明实施例第三方面第六种可能的实现方式，本发明实施例第三方面的第八种可能的实现方式中，所述第一更新信息通过物理层下行控制信道传输。
本发明实施例第四方面一种用户设备，包括：第二发送单元，第二接收单元，第二确定单元，和第二存储单元；
所述第二发送单元，用于向基站发送能力等级信息，所述能力等级信息用于表示所述用户设备支持高阶调制或低阶调制；其中，所述高阶调制包括256正交幅度调制QAM，所述低阶调制包括64QAM、16QAM以及正交相移键控QPSK中的至少一种，所述基站存储有支持所述高阶调制的第一高阶调制映射表，以及支持低阶调制的第一低阶调制映射表；
所述第二接收单元，用于接收所述基站发送的调制编码方案索引，所述调制编码方案索引由所述基站根据第一调制映射表确定，所述第一调制映射表为所述第一高阶调制映射表或所述第一低阶调制映射表；
所述第二确定单元，用于确定与所述基站通信的第二调制映射表，并根据所述第二调制映射表和所述调制编码方案索引确定调制编码方案；
所述第二存储单元，用于至少存储有支持所述高阶调制的第二高阶调制映 射表和支持所述低阶调制的第二低阶调制映射表中的一种，所述第二调制映射表为所述第二高阶调制映射表或所述第二低阶调制映射表。
本发明实施例第四方面的第一种可能的实现方式中，当所述用户设备存储有支持所述高阶调制的第二高阶调制映射表时，
所述第二确定单元中确定与所述基站通信的第二调制映射表，包括：
默认使用所述第二高阶调制映射表为所述第二调制映射表。
本发明实施例第四方面的第二种可能的实现方式中，当所述用户设备存储有支持所述高阶调制的第二高阶调制映射表和支持所述低阶调制的第二低阶调制映射表时，
所述第二确定单元中确定与所述基站通信的第二调制映射表，包括：
当信号干扰噪声比SINR大于SINR门限时，所述用户设备确定所述第二调制映射表为所述第二高阶调制映射表；或者，
当信号干扰噪声比SINR小于SINR门限时，所述用户设备确定所述第二调制映射表为所述第二低阶调制映射表。
结合本发明实施例第四方面，或者第四方面第一种至第二种任一项可能的实现方式，本发明实施例第四方面的第三种可能的实现方式中，所述第二存储单元中存储有支持所述高阶调制的第二高阶调制映射表和支持所述低阶调制的第二低阶调制映射表时，
所述第二发送单元，还用于向所述基站发送信道质量信息，所述信道质量信息用于所述基站确定是否更新所述第一调制映射表，所述信道质量信息包括信道质量指示符CQI。
结合本发明实施例第四方面第三种可能的实现方式，本发明实施例第四方面的第四种可能的实现方式中，所述第二接收单元，还用于接收所述基站发送的第一更新信息；
所述用户设备还包括：更新单元，用于根据所述第一更新信息更新所述第二调制映射表。
结合本发明实施例第四方面，或者第四方面第一种至第二种任一项可能的实现方式，本发明实施例第三方面的第五种可能的实现方式中，所述第二存储单元中存储有支持所述高阶调制的第二高阶调制映射表和支持所述低阶调制的第二低阶调制映射表时，
所述第二确定单元，还用于确定信道质量信息，所述信道质量信息包括信道质量指示符；根据所述信道质量信息，确定是否更新所述第二调制映射表。
结合本发明实施例第四方面第五种可能的实现方式，本发明实施例第四方面的第六种可能的实现方式中，所述第二确定单元中根据所述信道质量信息，确定是否更新所述第二调制映射表，包括：
当所述第二调制映射表为所述第二高阶调制映射表，且所述信道质量信息小于信道质量门限时，所述用户设备确定更新所述第二调制映射表，更新后的第二调制映射表为所述第二低阶调制映射表；或者，
当所述第二调制映射表为所述第二低阶调制映射表，且所述信道质量信息大于信道质量门限时，所述用户设备确定更新所述第二调制映射表，更新后的第二调制映射表为所述第二高阶调制映射表。
结合本发明实施例第四方面第六种可能的实现方式，本发明实施例第四方面的第七种可能的实现方式中，所述第二发送单元，还用于向所述基站发送第二更新信息，所述第二更新信息用于指示所述基站更新所述第一调制映射表。
结合本发明实施例第四方面第四种可能的实现方式，或者，本发明实施例第四方面第七种可能的实现方式，本发明实施例第四方面的第八种可能的实现方式中，所述第一更新信息或所述第二更新信息由无线资源控制消息承载。
结合本发明实施例第四方面第四种可能的实现方式，或者，本发明实施例第四方面第七种可能的实现方式，本发明实施例第四方面的第九种可能的实现方式中，所述第一更新信息通过物理层下行控制信道传输。
从以上技术方案可以看出，本发明实施例中基站存储有支持所述高阶调制的第一高阶调制映射表，以及支持所述低阶调制的第一低阶调制映射表，所述基站接收用户设备发送的能力等级信息；所述基站根据所述用户设备发送的能 力等级信息，确定用于与所述用户设备通信的第一调制映射表；所述基站根据所述调制映射表确定调制编码方案索引，所述调制编码方案索引用于所述用户设备确定调制编码方案；向所述用户设备发送所述调制编码方案索引。因此，采用本发明实施例提供的技术方案，基站能够兼容的为支持256QAM调制的UE和不支持支持256QAM调制的UE提供服务，克服了现有技术基站不兼容的问题。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1是现有技术中的映射表举例；
图2是本发明实施例一提供一种兼容高阶调制和低阶调制的传输方法流程示意简图；
图3是本发明实施例二提供一种兼容高阶调制和低阶调制的传输方法流程示意简图；
图4是本发明实施例三提供一种兼容高阶调制和低阶调制的传输方法流程示意简图；
图5是本发明实施例提供的一种映射表举例；
图6是本发明实施例四提供一种兼容高阶调制和低阶调制的传输方法流程示意简图；
图7是本发明实施例五提供一种兼容高阶调制和低阶调制的传输方法流程示意简图；
图8是本发明实施例六提供一种基站示意简图；
图9是本发明实施例七提供一种用户设备示意简图；
图10是本发明实施例八提供一种基站示意简图；
图11是本发明实施例九提供一种用户设备示意简图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明实施例提供一种兼容高阶调制和低阶调制的传输方法、装置，该技术方案主要涉及网络装置(如基站)和用户设备(UE)。基站可以是与用户设备(user equipment，简称为“UE”)或其它通信站点如中继站点，进行通信的设备。基站可以为特定地理区域提供通信覆盖。例如，基站具体可以是UMTS中的节点B(Node B，简称为“NB”)；也可以是LTE或LTE-A中的演进型节点B(Evolutional Node B，简称为“ENB”或“eNode B”)；或者，还可以是无线通信网络中的提供接入服务的其他接入网设备，本发明实施例中并不限定。UE可以称为终端(terminal)，移动台(mobile station)，用户单元(subscriber unit)，站台(station)等。例如，UE具体可以为蜂窝电话(cellular phone)，个人数字助理(personal digital assistant，简称为PDA)，无线调制解调器(modem)，无线通信设备，手持设备(handheld)，膝上型电脑(laptop computer)，无绳电话(cordless phone)等。以下说明以eNB为例进行描述。
如下，参见具体实施例对本发明实施例进行详细说明。
实施例一
本发明实施例提供一种兼容高阶调制和低阶调制的传输方法，如图2所示，该方法中所说的高阶调制包括256正交幅度调制QAM，低阶调制包括64QAM、16QAM以及正交相移键控QPSK中的至少一种，在中基站存储有支持所述高阶调制的第一高阶调制映射表，以及支持所述低阶调制的第一低阶调制映射表，该方法包括：
步骤A1，基站接收用户设备发送的能力等级信息，所述能力等级信息用于表示所述用户设备支持所述高阶调制或支持所述低阶调制；
其中，该能力等级信息可以是在UE入网阶段发送给eNB，但本实施例不限制能力等级信息接收时机是在UE的入网阶段，也可以是其它过程中接收。
步骤A2，基站根据所述用户设备发送的能力等级信息，确定用于与所述用户设备通信的第一调制映射表，所述第一调制映射表为所述第一高阶调制映射表或所述第一低阶调制映射表；
需要说明的是，第一高阶调制映射表可以指后续实施例中所说的基站中存储的支持256QAM的映射表；第一低阶调制映射表可以指后续实施例中所说的基站中存储的不支持256QAM的映射表。
其中，步骤A2一种具体的实现方式可以是：当所述能力等级信息表示所述用户设备支持所述高阶调制时，所述基站确定所述调制映射表为所述第一高阶调制映射表；其中，所述用户设备存储有支持所述高阶调制的第二高阶调制映射表。
步骤A2其它具体的实现方式还可以是：
当所述能力等级信息表示所述用户设备支持所述高阶调制，且信号干扰噪声比SINR大于(或者等于)SINR门限时，所述基站确定所述第一调制映射表为所述第一高阶调制映射表；或者，
或者当所述能力等级信息表示所述用户设备支持所述高阶调制，且信号干扰噪声比SINR小于SINR门限时，所述基站确定所述第一调制映射表为所述第一低阶调制映射表；
其中，所述用户设备存储有支持所述高阶调制的第二高阶调制映射表，以及支持所述低阶调制的第二低阶调制映射表。
后续实施例中会结合具体实施例，说明上述步骤A2的具体实现方式。
步骤A3，所述基站根据所述调制映射表确定调制编码方案索引，所述调制编码方案索引用于所述用户设备确定调制编码方案；
其中，eNB获取到UE要求的业务量大小信息，UE上报的CQI，eNB获取到UE的CQI后，将其转换为对应的SINR，然后，根据MCS与SINR表，确定MCS索引值以及调制阶数和传输块大小索引值。
步骤A4，所述基站向所述用户设备发送所述调制编码方案索引。
通过上述对本实施例的说明，该方法中基站存储有支持所述高阶调制的第一高阶调制映射表，以及支持所述低阶调制的第一低阶调制映射表，所述基站接收用户设备发送的能力等级信息；所述基站根据所述用户设备发送的能力等级信息，确定用于与所述用户设备通信的第一调制映射表；所述基站根据所述调制映射表确定调制编码方案索引，所述调制编码方案索引用于所述用户设备确定调制编码方案；向所述用户设备发送所述调制编码方案索引；因此，不管是支持256QAM的UE，还是不支持256QAM的UE都可以准确的确定调制编码方案索引，从而进行数据传输。因此，本实施例提供的方法，eNB能够兼容的为支持256QAM调制的UE和不支持支持256QAM调制的UE提供服务，克服了现有技术eNB不兼容的问题。
可选的，当所述用户设备存储有支持所述高阶调制的第二高阶调制映射表，以及支持所述低阶调制的第二低阶调制映射表时，所述方法还包括：
步骤A5，所述基站接收所述用户设备上报的信道质量信息，所述信道质量信息包括信道质量指示符CQI；
步骤A6，所述基站根据所述信道质量信息，确定是否更新所述第一调制映射表。
其中，上述步骤A6中所述基站根据所述信道质量信息，确定是否更新所述第一调制映射表，的一种实现方案可以是：
当所述第一调制映射表为所述第一高阶调制映射表，且所述信道质量信息小于信道质量门限时，所述基站确定更新所述第一调制映射表，更新后的第一调制映射表为所述第一低阶调制映射表；或者，
当所述第一调制映射表为所述第二低阶调制映射表，且所述信道质量信息大于(或者等于)信道质量门限时，所述基站确定更新所述第一调制映射表，更新后的第一调制映射表为所述第一高阶调制映射表。
可选的，所述方法还包括：
步骤A7，所述基站向所述用户设备发送第一更新信息，所述第一更新信 息用于指示所述用户设备更新第二调制映射表，所述第二调制映射表用于与所述基站通信，为所述第二高阶调制映射表或所述第二低阶调制映射表。
可选的，当所述用户设备存储有支持所述高阶调制的第二高阶调制映射表，以及支持所述低阶调制的第二低阶调制映射表时，所述方法还包括：
步骤A8，所述基站接收所述用设备发送的第二更新信息，所述第二更新信息用于指示所述基站更新所述第一调制映射表。
其中，所述第一更新信息或所述第二更新信息由无线资源控制消息承载。
或者，所述第一更新信息通过物理层下行控制信道传输。
实施例二
本发明实施例提供一种用于用户设备的传输方法，如图3所示，该方法包括：
步骤B1，所述用户设备向基站发送能力等级信息，所述能力等级信息用于表示所述用户设备支持高阶调制或低阶调制；其中，所述高阶调制包括256正交幅度调制QAM，所述低阶调制包括64QAM、16QAM以及正交相移键控QPSK中的至少一种，所述基站存储有支持所述高阶调制的第一高阶调制映射表，以及支持低阶调制的第一低阶调制映射表；
步骤B2，所述用户设备接收所述基站发送的调制编码方案索引，所述调制编码方案索引由所述基站根据第一调制映射表确定，所述第一调制映射表为所述第一高阶调制映射表或所述第一低阶调制映射表；
步骤B3，所述用户设备确定与所述基站通信的第二调制映射表，并根据所述第二调制映射表和所述调制编码方案索引确定调制编码方案；
其中，所述用户设备至少存储有支持所述高阶调制的第二高阶调制映射表和支持所述低阶调制的第二低阶调制映射表中的一种，所述第二调制映射表为所述第二高阶调制映射表或所述第二低阶调制映射表。
需要说明的是，所述第二高阶调制映射表可以指后续实施例中说明的UE中存储的支持256QAM的映射表；所述第二低阶调制映射表以指后续实施例 中说明的UE中存储的不支持256QAM的映射表。
通过上述对本实施例的说明，该方法中所述用户设备向基站发送能力等级信息，接收所述基站发送的调制编码方案索引，所述用户设备确定与所述基站通信的第二调制映射表，并根据所述第二调制映射表和所述调制编码方案索引确定调制编码方案；其中，所述用户设备至少存储有支持所述高阶调制的第二高阶调制映射表和支持所述低阶调制的第二低阶调制映射表中的一种；使得eNB能够兼容的为支持256QAM调制的UE和不支持支持256QAM调制的UE提供服务，克服了现有技术eNB不兼容的问题。
可选的，当所述用户设备存储有支持所述高阶调制的第二高阶调制映射表时，所述用户设备确定与所述基站通信的第二调制映射表，包括：
所述用户设备默认使用所述第二高阶调制映射表为所述第二调制映射表。
可选的，当所述用户设备存储有支持所述高阶调制的第二高阶调制映射表和支持所述低阶调制的第二低阶调制映射表时，所述用户设备确定与所述基站通信的第二调制映射表，包括：
当信号干扰噪声比SINR大于(或者等于)SINR门限时，所述用户设备确定所述第二调制映射表为所述第二高阶调制映射表；或者，
当信号干扰噪声比SINR小于SINR门限时，所述用户设备确定所述第二调制映射表为所述第二低阶调制映射表。
可选的，当所述用户设备存储有支持所述高阶调制的第二高阶调制映射表和支持所述低阶调制的第二低阶调制映射表时，所述方法还包括：
步骤B4，所述用户设备向所述基站发送信道质量信息，所述信道质量信息用于所述基站确定是否更新所述第一调制映射表，所述信道质量信息包括信道质量指示符CQI。
可选的，所述方法还包括：
步骤B5，所述用户设备接收所述基站发送的第一更新信息，并根据所述第一更新信息更新所述第二调制映射表。
可选的，当所述用户设备存储有支持所述高阶调制的第二高阶调制映射表和支持所述低阶调制的第二低阶调制映射表时，所述方法还包括：
步骤B6，所述用户设备确定信道质量信息，所述信道质量信息包括信道质量指示符；
所述用户设备根据所述信道质量信息，确定是否更新所述第二调制映射表。
可选的，所述用户设备根据所述信道质量信息，确定是否更新所述第二调制映射表，具体包括：
当所述第二调制映射表为所述第二高阶调制映射表，且所述信道质量信息小于信道质量门限时，所述基站确定更新所述第二调制映射表，更新后的第二调制映射表为所述第二低阶调制映射表；或者，
当所述第二调制映射表为所述第二低阶调制映射表，且所述信道质量信息大于(或者等于)信道质量门限时，所述基站确定更新所述第二调制映射表，更新后的第二调制映射表为所述第二高阶调制映射表。
可选的，所述方法还包括：
步骤B7，所述用户设备向所述基站发送第二更新信息，所述第二更新信息用于指示所述基站更新所述第一调制映射表。
其中，所述第一更新信息或所述第二更新信息由无线资源控制消息承载。
或者，所述第一更新信息通过物理层下行控制信道传输。
实施例三
本发明实施例提供一种兼容高阶调制和低阶调制的传输方法，该方法是基于实施例一、二的基础上，表现多种设备之间交互的方案。如图4所示，该方法包括：
步骤101，UE向eNB发送能力等级信息，该能力等级信息指示该UE支持或者不支持256QAM。
其中，该UE发送能力等级信息可以是在UE入网阶段发送，但本实施例 不限制发送能力等级信息的时机是入网阶段，也可以是其它过程中发送。
步骤102，UE向eNB发送信道质量信息。其中，信道质量信息具体可以是信道质量指示(CQI，Channel Quality Indicator)。
步骤103，eNB接收UE发送的能力等级信息，存储该能力等级信息；
步骤104，eNB接收UE发送的信道质量信息，根据信道质量信息，确定调制阶数和TBS索引。
其中，根据信道质量信息，确定调制阶数和TBS索引的具体操作可以是：eNB获取到UE要求的业务量大小信息，UE上报的CQI，以及eNB当前的资源情况，综合分析后，确定调制阶数和TBS索引。
步骤105，eNB根据存储的能力等级信息，以及确定的调制阶数和TBS索引，选择与能力等级信息对应的映射表，确定调制编码方案索引(IMCS)；调制编码方案索引用于所述用户设备确定调制编码方案；其中，选择的与能力等级信息对应的映射表可以理解为实施例一中的“第一调制映射表”。
若UE发送的能力等级信息中指示该UE不支持256QAM，则eNB选择的与能力等级信息对应的映射表为不支持256QAM的映射表(或者称为普通映射表)，如图1所示映射表，与现有技术中的映射表相同；
若UE发送的能力等级信息中指示该UE支持256QAM，则eNB选择的与能力等级信息对应的映射表为支持256QAM的映射表(或者称为高阶映射表)，如图5所示的映射表。其中，图5中的高阶映射表调制阶数序号(Modulation Order)M0，M1……M31，是
Figure PCTCN2014091840-appb-000001
代表的调制阶数的另一种表达方式。对该表的理解可以是，假设：当基站侧确定的调制阶数为QPSK(即序号为2，即M0为2)，确定的TBS索引为0(即T0为0)，则根据图5所示的映射表，eNB确定的MCS索引为0；或者，当eNB确定的MCS索引仍然为0，但在映射表中对应的调制阶数序号和TBS索引不同，即M0为8(即256QAM)，T0为1。可以理解为MCS索引为0时，(M0，T0)可以有一种或者一种以上的取值，同理，MCS索引为i时，(Mi，Ti)可以有一种或者一种以上的取值，即eNB根据获取的(Mi，Ti)的具体取值，根据图5所示的映射表，确定MCS索引 的取值，其中，i的取值(0，31)。
还需要理解的是，图5所示的映射表仅是便于理解的举例，并非对本发明实施例的限制。
步骤106，eNB将确定调制编码方案索引发送给UE；
步骤107，UE接收到调制编码方案索引，根据存储的映射表和接收的调制编码方案索引，确定调制阶数和TBS索引，确定调制编码方案。
需要理解的是，若UE是不支持256QAM的，则eNB发送给该UE的调制编码方案索引，是根据存储在eNB中的不支持256QAM的映射表获得的，同理，UE接收到调制编码方案索引，对照自身存储的不支持256QAM的映射表，从而确定调制阶数和TBS索引，从而进行数据传输；
若UE是支持256QAM的，则eNB发送给该UE的调制编码方案索引，是根据存储在eNB中的支持256QAM的映射表获得的，同理，UE接收到调制编码方案索引，对照自身存储的支持256QAM的映射表，从而确定调制阶数和TBS索引，从而进行数据传输。
进一步，若支持256QAM的UE接收到eNB发送的调制编码方案索引，在该支持256QAM的UE中存储的映射表中可以与图5所示映射表相同，一种最简单的实现方式，可以是在图5所示的映射表中，MCS索引为i时，(Mi，Ti)仅有一种取值，因此，支持256QAM的UE接收到eNB发送的调制编码方案索引，就可以确定(Mi，Ti)值。
如果在支持256QAM的UE中存储的映射表如图5所示，且MCS索引为i时，(Mi，Ti)有一种以上的取值，那么支持256QAM的UE就可以进一步根据自身测量得到的信道质量信息(如CQI)，判断当MCS索引为i时，(Mi，Ti)的具体取值。其原理是，如果信道质量信息较优良，则可以对应高阶的调制阶数，即Mi的具体取值有2、4两个值，分别对应QPSK和16QAM，如当前UE的信道质量优良，则UE选择的Mi的具体取值为4(即选择调制编码方案为16QAM)，同理Ti的取值。
通过上述对本实施例的说明，该方法中UE首先上报能力等级信息，该能 力等级信息指示该UE支持或者不支持256QAM，UE还上报信道质量信息，用于eNB根据信道质量信息，确定调制阶数和TBS索引，eNB根据能力等级信息，以及确定的调制阶数和TBS索引，选择与能力等级信息对应的映射表，确定调制编码方案索引，在UE侧接收到的eNB发送的调制编码方案索引，由于eNB是根据UE的能力，最终确定的调制编码方案索引，因此，不管是支持256QAM的UE，还是不支持256QAM的UE都可以准确的确定调制阶数和TBS索引，从而进行数据传输。因此，本实施例提供的方法，eNB能够兼容的为支持256QAM调制的UE和不支持支持256QAM调制的UE提供服务，克服了现有技术eNB不兼容的问题。
实施例四
本发明实施例提供了一种兼容高阶调制和低阶调制的传输方法，该方法与上述实施例三中说明的方法相似，不同之处在于，本实施例中说明的支持256QAM的UE不仅存储有支持256QAM的映射表，也存储有不支持256QAM的映射表，在信道质量较差或者网络侧控制等情况下，支持256QAM的UE也可以选择不支持256QAM的映射表作为传输数据时的依据。该方法的优点是，支持256QAM的UE中存储的支持256QAM的映射表中调制编码方案索引(IMCS)的总数，与不支持256QAM的映射表中调制编码方案索引(IMCS)的总数是相同的，参见图1和图5所示，即两张映射表具有的调制编码方案的总数是相同的，以图1、5中例举，总数为32个。由于支持256QAM的映射表中删除了部分低于256QAM的调制方案，与现有不支持256QAM的映射表可以针对不同的信道质量，对于相同调制方案有多种传输块大小TBS策略不同。
例如参见图1所示，现有技术中采用QPSK的调制方案有0～9项，总数为10个QPSK方案，其中，不同的QPSK方案对应的传输块大小TBS不同。而支持256QAM的映射表的映射表由于删除了部分的QPSK等现有调制编码方案，从而增加了256QAM，因此，现有技术的调度力度变大，无法实现精细调度。
而本发明实施例四，就是为了克服支持256QAM的UE调度力度过大， 不能实现精细调度的问题，采用在该UE中同时存储现有的不支持256QAM的映射表已解决上述问题。具体方案如下所示：
参见图6所示，该方法包括：
步骤201，UE向eNB发送能力等级信息，该能力等级信息指示该UE支持或者不支持256QAM。
其中，该UE发送能力等级信息可以是在UE入网阶段发送，但本实施例不限制发送能力等级信息的时机是入网阶段，也可以是其它过程中发送。
步骤202，UE向eNB发送信道质量信息。其中，信道质量信息具体可以是信道质量指示(CQI，Channel Quality Indicator)。
步骤203，eNB接收UE发送的能力等级信息，存储该能力等级信息；
步骤204，UE与eNB确定初始的调制映射表，其中，eNB与UE中都包括：支持256QAM的映射表和不支持256QAM的映射表，所述初始的调制映射表为支持256QAM的映射表，或者为不支持256QAM的映射表。
其中，步骤204中确定的初始的调制映射表具体可以是通过默认的都采用不支持256QAM的映射表，或者都默认采用支持256QAM的映射表；或者可以是UE与eNB通过协商确定支持256QAM的映射表，或者不支持256QAM的映射表，为初始的调制映射表。
步骤205，eNB接收UE发送的信道质量信息，根据信道质量信息，确定调制阶数和TBS索引。
步骤206，eNB根据存储的能力等级信息，以及确定的调制编码方案和TBS索引，选择初始的调制映射表，确定调制编码方案索引(IMCS)
步骤207，eNB将确定调制编码方案索引发送给UE；
步骤208，UE接收到调制编码方案索引，根据初始的调制映射表和接收的调制编码方案索引，确定调制阶数和TBS索引，从而进行数据传输。
通过上述对本发明实施例提供的方法的说明，该方法中UE首先上报能力等级信息，该能力等级信息指示该UE支持或者不支持256QAM，UE还上报 信道质量信息，用于eNB根据信道质量信息，确定调制阶数和TBS索引，eNB根据能力等级信息，以及确定的调制阶数和TBS索引，选择与能力等级信息对应的映射表，确定调制编码方案索引，在UE侧接收到的eNB发送的调制编码方案索引，由于eNB是根据UE的能力，最终确定的调制编码方案索引，因此，不管是支持256QAM的UE，还是不支持256QAM的UE都可以准确的确定调制阶数和TBS索引，从而进行数据传输。因此，本实施例提供的方法，eNB能够兼容的为支持256QAM调制的UE和不支持支持256QAM调制的UE提供服务，克服了现有技术eNB不兼容的问题。
进一步，该方法中支持256QAM的UE中，也存储有不支持256QAM的映射表，使得该UE不仅可以实现高解调制的数据传输，也同时可以实现精细调度。
可选的，在实际的应用中，eNB可以根据信道优良状态，或者无线资源的使用情况，或者其他因素，控制与支持256QAM的UE切换之前确定的初始的调制映射表。因此，该方法还可以包括：
步骤209，eNB发送切换消息给支持256QAM调制的UE。其中，切换消息可以理解为实施例一中所说的“第一更新信息”。
其中，步骤209中eNB发送切换消息给支持256QAM调制的UE的具体实现可以是：eNB通过发送无线资源控制(RRC，Radio Resource Control)消息，在该RRC消息中携带有切换映射表的指令，具体的操作可以是：在RRC消息中增加字段支持两种映射表的切换。所说的两种映射表指：支持256QAM的映射表和不支持256QAM的映射表。采用RRC方法进行切换的优点在于，对现有协议影响最小。
或者，步骤209中eNB发送切换消息给支持256QAM调制的UE的具体实现可以是：eNB通过物理下行控制信道(PDCCH，Physical Downlink Control Channel)发送下行控制信息(DCI，Downlink Control Information)，可以在DCI中增加1个比特，用于指示UE使用两种映射表中的其中一种。例如，对 于DCI格式1(DCI format 1)、DCI格式1A(DCI format 1A)，可以在TPC command for PUCCH字段(field)中增加1个比特；或者，对于DCI格式2(DCI format 2),可以在redundancy version字段中增加1个比特。其中TPC为发送功率控制(transmit power control)的简写，PUCCH为物理上行控制信道(Physical Uplink Control Channel)的简写。采用PDCCH方法进行切换的优点在于：实时性，支持实时切换。
还需要理解的是，eNB侧或UE侧的两张表可以为一张大表，前半部分为不支持256QAM映射表，后半部分为支持256QAM映射表，PDCCH payload控制用于支持256QAM的UE指示使用大表中的支持256QAM映射部分或者不支持256QAM映射部分。
可选的，在实际的应用中，当UE存储有支持所述高阶调制的第二高阶调制映射表和支持所述低阶调制的第二低阶调制映射表时，所述方法还包括：
步骤210，UE确定信道质量信息，所述信道质量信息包括信道质量指示符；
步骤211，UE根据所述信道质量信息，确定是否更新所述第二调制映射表。
其中，步骤211中UE根据所述信道质量信息，确定是否更新所述第二调制映射表，具体包括：
当所述第二调制映射表为所述第二高阶调制映射表，且所述信道质量信息小于信道质量门限时，UE确定更新所述第二调制映射表，更新后的第二调制映射表为所述第二低阶调制映射表；或者，
当所述第二调制映射表为所述第二低阶调制映射表，且所述信道质量信息大于(或者等于)信道质量门限时，UE确定更新所述第二调制映射表，更新后的第二调制映射表为所述第二高阶调制映射表。
步骤212，UE向所述基站发送第二更新信息，所述第二更新信息用于指 示所述基站更新所述第一调制映射表。
其中，第二更新信息由无线资源控制消息承载。例如，UE可以通过RRC重配置请求消息，请求基站为该用户更新为所述第一调制映射表；基站决定最终调制映射表，并通过RRC重配置完成消息通知UE，来实现基站与UE调制映射表上的一致性。
上述说明的通过无线资源控制RRC消息，或者是物理下行控制信道PDCCH，控制UE切换映射表的操作，并非穷举，仅是便于理解的举例。本发明实施例不限制其他具体切换操作。
实施例五
本发明实施例提供了一种兼容高阶调制和低阶调制的传输方法，该方法与实施例四相似，即在支持256QAM的UE中包括有支持256QAM的映射表(或者称为隐式映射信息，该隐式映射信息可以为支持256QAM的映射表)，该支持256QAM的UE中也包括有不支持256QAM的映射表(或者称为显式映射信息，该显式映射信息可以为不支持256QAM的映射表)。
该实施例五与实施例四的区别在于，本实施例中UE中对于隐式信息具体的确定，利用UE中测量得到的信道质量信息，如CQI。具体说明如下：
如图7所示，该方法包括：
步骤301，UE向eNB发送能力等级信息，该能力等级信息指示该UE支持或者不支持256QAM。
其中，该UE发送能力等级信息可以是在UE入网阶段发送，但本实施例不限制发送能力等级信息的时机是入网阶段，也可以是其它过程中发送。
步骤302，UE向eNB发送信道质量信息。其中，信道质量信息具体可以是信道质量指示(CQI，Channel Quality Indicator)。
步骤303，eNB接收UE发送的能力等级信息，存储该能力等级信息；
步骤304，eNB接收UE发送的信道质量信息，根据信道质量信息，确定调制阶数和TBS索引。
其中，根据信道质量信息，确定调制阶数和TBS索引的具体操作可以是：eNB获取到UE要求的业务量大小信息，UE上报的CQI，以及eNB当前的资源情况，综合分析后，确定调制阶数和TBS索引。
步骤305，eNB根据存储的能力等级信息，以及确定的调制阶数和TBS索引，选择与能力等级信息对应的映射表，确定调制编码方案索引(IMCS)。
若UE发送的能力等级信息中指示该UE不支持256QAM，则eNB选择的与能力等级信息对应的映射表为不支持256QAM的映射表(也可以统称为：显式映射信息)，如图1所示映射表，与现有技术中的映射表相同；
若UE发送的能力等级信息中指示该UE支持256QAM，则eNB选择的与能力等级信息对应的映射表为支持256QAM的映射表(也可以统称为：隐式映射信息)，如图5所示的映射表。其中，图5中的高阶映射表调制阶数序号(Modulation Order)M0，M1……M31分别代表调制阶数。对该表的理解可以是，假设：当基站侧确定的调制阶数为QPSK(即序号为2，即M0为2)，确定的TBS索引为0(即T0为0)，则根据图5所示的映射表，eNB确定的MCS索引为0；或者，当eNB确定的MCS索引仍然为0，但在映射表中对应的调制阶数序号和TBS索引不同，即M0为8(即256QAM)，T0为1。可以理解为MCS索引为0时，(M0，T0)可以有一种或者一种以上的取值，同理，MCS索引为i时，(Mi，Ti)也可以有一种或者一种以上的取值，即eNB根据获取的(Mi，Ti)的具体取值，根据图5所示的映射表，确定MCS索引的取值，其中，i的取值(0，31)。
上述所说的隐式映射信息，可以理解为(Mi，Ti)的具体取值并非明显获得，而是需要UE根据信道质量情况或者其它判断条件而将(Mi，Ti)准确确定，因此，在此过程中对(Mi，Ti)可以理解为隐式映射信息。
步骤306，将确定调制编码方案索引发送给UE。
步骤307，UE接收到调制编码方案索引；UE根据测量的信道质量信息，在存储的隐式映射信息，或者存储的显式映射信息中选择其中之一(或者可以理解为，UE存储有支持所述高阶调制的第二高阶调制映射表，以及支持所述低阶调制的第二低阶调制映射表，其中，第二高阶调制映射表以隐式映射信息 存储的，第二低阶调制映射表以显示信息存储的)。
其中，步骤307中UE根据测量的信道质量信息，在隐式映射信息或者显式映射信息中选择其中之一，具体可以是根据CQI，信噪比，或者其他一个或者组合，可以反映信道质量优劣的参数(可以统称为信道质量信息)。
当信道质量信息反映出信道质量高于表示优良的门限值时，例如CQI大于(或者等于)表示信道优良的门限值，或者信噪比大于表示信道优良的门限时，则UE采用隐式映射信息，该隐式映射信息具体可以是隐式映射表，或者是一张大表中的具有的隐式映射信息。
当信道质量信息反映出信道质量低于表示优良的门限值时，例如CQI小于表示信道优良的门限值，或者信噪比小于表示信道优良的门限时，则UE采用显式映射信息，该显式映射信息具体可以是显式映射表，或者是一张大表中的具有的显式映射信息，该显式映射信息具体可以如图1所示。
步骤308，若选择的是隐式映射信息，UE根据接收的调制编码方案索引和隐式映射信息，确定调制阶数和TBS索引的隐式信息；根据确定的调制阶数和TBS索引的隐式信息，以及测量的信道质量信息，确定调制阶数和TBS索引。
对应上述步骤308操作理解，可以参考举例，例如：当选择的是隐式映射信息，则隐式的映射信息可以以图5所示为例，UE根据接收的调制编码方案索引和隐式映射信息，确定调制阶数和TBS索引的隐式信息，具体可以包括：UE若接收到的调制编码方案索引(IMCS)为1，根据图5所示的隐式映射信息，则确定的调制阶数和TBS索引的隐式信息为(M1，T1)；
UE根据确定的调制阶数和TBS索引的隐式信息，以及测量的信道质量信息，确定调制阶数和TBS索引，具体可以包括：UE根据确定的调制阶数和TBS索引的隐式信息为(M1，T1)，且UE测量得到的信道质量信息(如CQI)，若信道质量信息显式信道质量优良，确定的调制阶数可以为高阶，传输块大小可以选择较大的，否则，选择相反的。对于如图5所示的(M1，T1)的隐式信息对应有两种情况的取值即(2、6)和(4、9)，若测量的信道质量大于(或者等于)第二门限值，表示信道质量好，则(M1，T1)的取值为(4、9)，即 选择的调制编码方式为16QAM，传输块大小(TBS)索引为9。需要理解的是图5所示为便于理解隐式映射信息的举例，并非对本发明实施例的限制。尤其需要理解的是隐式信息如(Mi，Ti)的取值可以为一个或者一个以上，也不限于图5中例举的2中取值，一个隐式信息如(Mi，Ti)的取值划分越多，则表示对信道质量的划分越细致，对应的UE将会采用的调制编码所传输数据，利于对端正确解调。
步骤309，UE选择的是显式映射信息，UE根据接收的调制编码方案索引和显式映射信息，确定调制阶数和TBS索引。
步骤310，UE根据步骤308或者步骤309确定的调制阶数和TBS索引，进行数据传输。
通过上述对本实施例的说明，该方法中UE首先上报能力等级信息，该能力等级信息指示该UE支持或者不支持256QAM，UE还上报信道质量信息，用于eNB根据信道质量信息，确定调制阶数和TBS索引，eNB根据能力等级信息，以及确定的调制阶数和TBS索引，选择与能力等级信息对应的映射表，确定调制编码方案索引，在UE侧接收到的eNB发送的调制编码方案索引，由于eNB是根据UE的能力，最终确定的调制编码方案索引，因此，不管是支持256QAM的UE，还是不支持256QAM的UE都可以准确的确定调制阶数和TBS索引，从而进行数据传输。因此，本实施例提供的方法，eNB能够兼容的为支持256QAM调制的UE和不支持支持256QAM调制的UE提供服务，克服了现有技术eNB不兼容的问题。
进一步，该方法中支持256QAM的UE中以显式映射信息和隐式映射信息的形式，分别存储了支持256QAM的映射信息，和不支持256QAM的映射信息，使得该UE不仅可以实现高解调制的数据传输，也同时可以实现精细调度。
进一步，当UE存储有支持所述高阶调制的第二高阶调制映射表，以及支持所述低阶调制的第二低阶调制映射表时，所述方法还包括：
步骤311，UE发送信道质量信息，所述信道质量信息包括信道质量指示符CQI；
步骤312，基站接收所述用户设备上报的信道质量信息，所述信道质量信息包括信道质量指示符CQI；
步骤313，基站根据所述信道质量信息，确定是否更新所述第一调制映射表。
其中，步骤313中基站根据所述信道质量信息，确定是否更新所述第一调制映射表，包括：
当所述第一调制映射表为所述第一高阶调制映射表，且所述信道质量信息小于信道质量门限时，所述基站确定更新所述第一调制映射表，更新后的第一调制映射表为所述第一低阶调制映射表；或者，
当所述第一调制映射表为所述第二低阶调制映射表，且所述信道质量信息大于(或者等于)信道质量门限时，所述基站确定更新所述第一调制映射表，更新后的第一调制映射表为所述第一高阶调制映射表。
步骤314，所述基站向所述用户设备发送第一更新信息，所述第一更新信息用于指示所述用户设备更新第二调制映射表，所述第二调制映射表用于与所述基站通信，为所述第二高阶调制映射表或所述第二低阶调制映射表。
其中，第一更新信息可以由无线资源控制消息承载，或者第一更新信息通过物理层下行控制信道传输。
实施例六
本发明实施例提供一种基站，该实施例中所述高阶调制包括256正交幅度调制QAM，所述低阶调制包括64QAM、16QAM以及正交相移键控QPSK中的至少一种，如图8所示，包括：
第一接收单元801，确定单元802，和第一发送单元803；第一存储单元804；
所述第一接收单元801，用于接收用户设备发送的能力等级信息，所述能力等级信息用于表示所述用户设备支持所述高阶调制或支持所述低阶调制；
所述确定单元802，用于根据所述用户设备发送的能力等级信息，确定用于与所述用户设备通信的第一调制映射表，所述第一调制映射表为所述第一高 阶调制映射表或所述第一低阶调制映射表；
所述确定单元802，还用于根据所述调制映射表确定调制编码方案索引，所述调制编码方案索引用于所述用户设备确定调制编码方案；
所述第一发送单元803，用于向所述用户设备发送所述调制编码方案索引；
所述第一存储单元804，用于存储有支持所述高阶调制的第一高阶调制映射表，以及支持所述低阶调制的第一低阶调制映射表。
通过上述对本实施例的说明，基站存储有支持所述高阶调制的第一高阶调制映射表，以及支持所述低阶调制的第一低阶调制映射表，所述基站接收用户设备发送的能力等级信息；所述基站根据所述用户设备发送的能力等级信息，确定用于与所述用户设备通信的第一调制映射表；所述基站根据所述调制映射表确定调制编码方案索引，所述调制编码方案索引用于所述用户设备确定调制编码方案；向所述用户设备发送所述调制编码方案索引；因此，不管是支持256QAM的UE，还是不支持256QAM的UE都可以准确的确定调制编码方案索引，从而进行数据传输。因此，本实施例提供的方法，eNB能够兼容的为支持256QAM调制的UE和不支持支持256QAM调制的UE提供服务，克服了现有技术eNB不兼容的问题。
可选的，所述确定单元中根据所述用户设备发送的能力等级信息，确定用于与所述用户设备通信的第一调制映射表，包括：
当所述能力等级信息表示所述用户设备支持所述高阶调制时，所述基站确定所述调制映射表为所述第一高阶调制映射表；其中，所述用户设备存储有支持所述高阶调制的第二高阶调制映射表。
可选的，所述确定单元中根据所述用户设备发送的能力等级信息，确定用于与所述用户设备通信的第一调制映射表，包括：
当所述能力等级信息表示所述用户设备支持所述高阶调制，且信号干扰噪声比SINR大于(或者等于)SINR门限时，所述基站确定所述第一调制映射表为所述第一高阶调制映射表；或者，
当所述能力等级信息表示所述用户设备支持所述高阶调制，且信号干扰噪声比SINR小于SINR门限时，所述基站确定所述第一调制映射表为所述第一低阶调制映射表；
其中，所述用户设备存储有支持所述高阶调制的第二高阶调制映射表，以及支持所述低阶调制的第二低阶调制映射表。
可选的，当所述用户设备存储有支持所述高阶调制的第二高阶调制映射表，以及支持所述低阶调制的第二低阶调制映射表时，
所述第一接收单元，还用于接收所述用户设备上报的信道质量信息，所述信道质量信息包括信道质量指示符CQI；
所述确定单元，还用于根据所述信道质量信息，确定是否更新所述第一调制映射表。
可选的，所述确定单元中根据所述信道质量信息，确定是否更新所述第一调制映射表，包括：
当所述第一调制映射表为所述第一高阶调制映射表，且所述信道质量信息小于信道质量门限时，所述基站确定更新所述第一调制映射表，更新后的第一调制映射表为所述第一低阶调制映射表；或者，
当所述第一调制映射表为所述第二低阶调制映射表，且所述信道质量信息大于(或者等于)信道质量门限时，所述基站确定更新所述第一调制映射表，更新后的第一调制映射表为所述第一高阶调制映射表。
可选的，所述第一发送单元，还用于向所述用户设备发送第一更新信息，所述第一更新信息用于指示所述用户设备更新第二调制映射表，所述第二调制映射表用于与所述基站通信，为所述第二高阶调制映射表或所述第二低阶调制映射表。
可选的，当所述用户设备存储有支持所述高阶调制的第二高阶调制映射表，以及支持所述低阶调制的第二低阶调制映射表时，
所述第一接收单元，还用于接收所述用设备发送的第二更新信息，所述第二更新信息用于指示所述基站更新所述第一调制映射表。
可选的，所述第一更新信息或所述第二更新信息由无线资源控制消息承载。
可选的，所述第一更新信息通过物理层下行控制信道传输。
对本实施例提供的基站的详细说明，也可以参考方法实施例一、三、四、五，此处不重述。
实施例七
本发明实施例提供一种用户设备，如图9所示，该设备包括：第二发送单元901，第二接收单元902，第二确定单元903，和第二存储单元904；
所述第二发送单元901，用于向基站发送能力等级信息，所述能力等级信息用于表示所述用户设备支持高阶调制或低阶调制；其中，所述高阶调制包括256正交幅度调制QAM，所述低阶调制包括64QAM、16QAM以及正交相移键控QPSK中的至少一种，所述基站存储有支持所述高阶调制的第一高阶调制映射表，以及支持低阶调制的第一低阶调制映射表；
所述第二接收单元902，用于接收所述基站发送的调制编码方案索引，所述调制编码方案索引由所述基站根据第一调制映射表确定，所述第一调制映射表为所述第一高阶调制映射表或所述第一低阶调制映射表；
所述第二确定单元903，用于确定与所述基站通信的第二调制映射表，并根据所述第二调制映射表和所述调制编码方案索引确定调制编码方案；
所述第二存储单元904，用于至少存储有支持所述高阶调制的第二高阶调制映射表和支持所述低阶调制的第二低阶调制映射表中的一种，所述第二调制映射表为所述第二高阶调制映射表或所述第二低阶调制映射表。
通过上述对本实施例的说明，用户设备向基站发送能力等级信息，接收所述基站发送的调制编码方案索引，所述用户设备确定与所述基站通信的第二调制映射表，并根据所述第二调制映射表和所述调制编码方案索引确定调制编码方案；其中，所述用户设备至少存储有支持所述高阶调制的第二高阶调制映射表和支持所述低阶调制的第二低阶调制映射表中的一种；使得eNB能够兼容的为支持256QAM调制的UE和不支持支持256QAM调制的UE提供服务， 克服了现有技术eNB不兼容的问题。
可选的，当所述用户设备存储有支持所述高阶调制的第二高阶调制映射表时，
所述第二确定单元中确定与所述基站通信的第二调制映射表，包括：
默认使用所述第二高阶调制映射表为所述第二调制映射表。
可选的，当所述用户设备存储有支持所述高阶调制的第二高阶调制映射表和支持所述低阶调制的第二低阶调制映射表时，
所述第二确定单元中确定与所述基站通信的第二调制映射表，包括：
当信号干扰噪声比SINR大于(或者等于)SINR门限时，所述用户设备确定所述第二调制映射表为所述第二高阶调制映射表；或者，
当信号干扰噪声比SINR小于SINR门限时，所述用户设备确定所述第二调制映射表为所述第二低阶调制映射表。
可选的，所述第二存储单元中存储有支持所述高阶调制的第二高阶调制映射表和支持所述低阶调制的第二低阶调制映射表时，
所述第二发送单元，还用于向所述基站发送信道质量信息，所述信道质量信息用于所述基站确定是否更新所述第一调制映射表，所述信道质量信息包括信道质量指示符CQI。
可选的，所述第二接收单元，还用于接收所述基站发送的第一更新信息；
所述用户设备还包括：更新单元，用于根据所述第一更新信息更新所述第二调制映射表。
可选的，所述第二存储单元中存储有支持所述高阶调制的第二高阶调制映射表和支持所述低阶调制的第二低阶调制映射表时，
所述第二确定单元，还用于确定信道质量信息，所述信道质量信息包括信道质量指示符；根据所述信道质量信息，确定是否更新所述第二调制映射表。
可选的，所述第二确定单元中根据所述信道质量信息，确定是否更新所述第二调制映射表，包括：
当所述第二调制映射表为所述第二高阶调制映射表，且所述信道质量信息小于信道质量门限时，所述用户设备确定更新所述第二调制映射表，更新后的第二调制映射表为所述第二低阶调制映射表；或者，
当所述第二调制映射表为所述第二低阶调制映射表，且所述信道质量信息大于(或者等于)信道质量门限时，所述用户设备确定更新所述第二调制映射表，更新后的第二调制映射表为所述第二高阶调制映射表。
可选的，所述第二发送单元，还用于向所述基站发送第二更新信息，所述第二更新信息用于指示所述基站更新所述第一调制映射表。
可选的，所述第一更新信息或所述第二更新信息由无线资源控制消息承载。
可选的，所述第一更新信息通过物理层下行控制信道传输。
对本实施例提供的用户设备的详细说明，也可以参考方法实施例二、三、四、五，此处不重述。
实施例八
本发明实施例还提供一种基站，结构示意图如图10所示，包括分别连接到总线上的存储器40、处理器41、输入装置43和输出装置44，其中：
存储器40中用来储存从输入装置43输入的数据，且还可以储存处理器41处理数据的必要文件等信息；
需要理解的是，高阶调制包括256正交幅度调制QAM，所述低阶调制包括64QAM、16QAM以及正交相移键控QPSK中的至少一种；
输入装置43，用于接收用户设备发送的能力等级信息，所述能力等级信息用于表示所述用户设备支持所述高阶调制或支持所述低阶调制；
处理器41，用于根据所述用户设备发送的能力等级信息，确定用于与所述用户设备通信的第一调制映射表，所述第一调制映射表为所述第一高阶调制映射表或所述第一低阶调制映射表；根据所述调制映射表确定调制编码方案索引，所述调制编码方案索引用于所述用户设备确定调制编码方案；
输出装置44，用于向所述用户设备发送所述调制编码方案索引；
存储器40，还用于所述基站存储有支持所述高阶调制的第一高阶调制映射表，以及支持所述低阶调制的第一低阶调制映射表，
通过上述对本实施例的说明，基站存储有支持所述高阶调制的第一高阶调制映射表，以及支持所述低阶调制的第一低阶调制映射表，所述基站接收用户设备发送的能力等级信息；所述基站根据所述用户设备发送的能力等级信息，确定用于与所述用户设备通信的第一调制映射表；所述基站根据所述调制映射表确定调制编码方案索引，所述调制编码方案索引用于所述用户设备确定调制编码方案；向所述用户设备发送所述调制编码方案索引；因此，不管是支持256QAM的UE，还是不支持256QAM的UE都可以准确的确定调制编码方案索引，从而进行数据传输。因此，本实施例提供的方法，eNB能够兼容的为支持256QAM调制的UE和不支持支持256QAM调制的UE提供服务，克服了现有技术eNB不兼容的问题。
可选的，处理器41中根据所述用户设备发送的能力等级信息，确定用于与所述用户设备通信的第一调制映射表，包括：
当所述能力等级信息表示所述用户设备支持所述高阶调制时，所述基站确定所述调制映射表为所述第一高阶调制映射表；其中，所述用户设备存储有支持所述高阶调制的第二高阶调制映射表。
可选的，处理器41中根据所述用户设备发送的能力等级信息，确定用于与所述用户设备通信的第一调制映射表，包括：
当所述能力等级信息表示所述用户设备支持所述高阶调制，且信号干扰噪声比SINR大于SINR门限时，所述基站确定所述第一调制映射表为所述第一高阶调制映射表；或者，
当所述能力等级信息表示所述用户设备支持所述高阶调制，且信号干扰噪声比SINR小于SINR门限时，所述基站确定所述第一调制映射表为所述第一低阶调制映射表；
其中，所述用户设备存储有支持所述高阶调制的第二高阶调制映射表，以及支持所述低阶调制的第二低阶调制映射表。
可选的，当所述用户设备存储有支持所述高阶调制的第二高阶调制映射表，以及支持所述低阶调制的第二低阶调制映射表时，
输入装置43，还用于接收所述用户设备上报的信道质量信息，所述信道质量信息包括信道质量指示符CQI；
处理器41，还用于根据所述信道质量信息，确定是否更新所述第一调制映射表。
可选的，处理器41中根据所述信道质量信息，确定是否更新所述第一调制映射表，包括：
当所述第一调制映射表为所述第一高阶调制映射表，且所述信道质量信息小于信道质量门限时，所述基站确定更新所述第一调制映射表，更新后的第一调制映射表为所述第一低阶调制映射表；或者，
当所述第一调制映射表为所述第二低阶调制映射表，且所述信道质量信息大于信道质量门限时，所述基站确定更新所述第一调制映射表，更新后的第一调制映射表为所述第一高阶调制映射表。
可选的，输出装置44，还用于向所述用户设备发送第一更新信息，所述第一更新信息用于指示所述用户设备更新第二调制映射表，所述第二调制映射表用于与所述基站通信，为所述第二高阶调制映射表或所述第二低阶调制映射表。
可选的，当所述用户设备存储有支持所述高阶调制的第二高阶调制映射表，以及支持所述低阶调制的第二低阶调制映射表时，
输出装置44，还用于接收所述用设备发送的第二更新信息，所述第二更新信息用于指示所述基站更新所述第一调制映射表。
可选的，所述第一更新信息或所述第二更新信息由无线资源控制消息承载。
可选的，所述第一更新信息通过物理层下行控制信道传输。
实施例九
本发明实施例还提供一种用户设备，结构示意图如图11所示，包括分别连接到总线上的存储器50、处理器51、输入装置53和输出装置54，其中：
存储器50中用来储存从输入装置53输入的数据，且还可以储存处理器51处理数据的必要文件等信息；
输出装置54，用于向基站发送能力等级信息，所述能力等级信息用于表示所述用户设备支持高阶调制或低阶调制；其中，所述高阶调制包括256正交幅度调制QAM，所述低阶调制包括64QAM、16QAM以及正交相移键控QPSK中的至少一种，所述基站存储有支持所述高阶调制的第一高阶调制映射表，以及支持低阶调制的第一低阶调制映射表；
输入装置53，用于接收所述基站发送的调制编码方案索引，所述调制编码方案索引由所述基站根据第一调制映射表确定，所述第一调制映射表为所述第一高阶调制映射表或所述第一低阶调制映射表；
处理器51，用于确定与所述基站通信的第二调制映射表，并根据所述第二调制映射表和所述调制编码方案索引确定调制编码方案；
存储器50，用于至少存储有支持所述高阶调制的第二高阶调制映射表和支持所述低阶调制的第二低阶调制映射表中的一种，所述第二调制映射表为所述第二高阶调制映射表或所述第二低阶调制映射表。
通过上述对本实施例的说明，用户设备向基站发送能力等级信息，接收所述基站发送的调制编码方案索引，所述用户设备确定与所述基站通信的第二调制映射表，并根据所述第二调制映射表和所述调制编码方案索引确定调制编码方案；其中，所述用户设备至少存储有支持所述高阶调制的第二高阶调制映射表和支持所述低阶调制的第二低阶调制映射表中的一种；使得eNB能够兼容的为支持256QAM调制的UE和不支持支持256QAM调制的UE提供服务，克服了现有技术eNB不兼容的问题。
可选的，当存储器50中存储有支持所述高阶调制的第二高阶调制映射表时，
处理器51中确定与所述基站通信的第二调制映射表，包括：
默认使用所述第二高阶调制映射表为所述第二调制映射表。
可选的，当存储器50存储有支持所述高阶调制的第二高阶调制映射表和支持所述低阶调制的第二低阶调制映射表时，
处理器51中确定与所述基站通信的第二调制映射表，包括：
当信号干扰噪声比SINR大于SINR门限时，所述用户设备确定所述第二调制映射表为所述第二高阶调制映射表；或者，
当信号干扰噪声比SINR小于SINR门限时，所述用户设备确定所述第二调制映射表为所述第二低阶调制映射表。
可选的，当存储器50中存储有支持所述高阶调制的第二高阶调制映射表和支持所述低阶调制的第二低阶调制映射表时，
输出装置54，还用于向所述基站发送信道质量信息，所述信道质量信息用于所述基站确定是否更新所述第一调制映射表，所述信道质量信息包括信道质量指示符CQI。
可选的，输入装置53，还用于接收所述基站发送的第一更新信息；
处理器51，还用于根据所述第一更新信息更新所述第二调制映射表。
可选的，当存储器50中存储有支持所述高阶调制的第二高阶调制映射表和支持所述低阶调制的第二低阶调制映射表时，
处理器51，还用于确定信道质量信息，所述信道质量信息包括信道质量指示符；根据所述信道质量信息，确定是否更新所述第二调制映射表。
可选的，处理器51中根据所述信道质量信息，确定是否更新所述第二调制映射表，包括：
当所述第二调制映射表为所述第二高阶调制映射表，且所述信道质量信息小于信道质量门限时，所述用户设备确定更新所述第二调制映射表，更新后的第二调制映射表为所述第二低阶调制映射表；或者，
当所述第二调制映射表为所述第二低阶调制映射表，且所述信道质量信息大于信道质量门限时，所述用户设备确定更新所述第二调制映射表，更新后的 第二调制映射表为所述第二高阶调制映射表。
可选的，输出装置54，还用于向所述基站发送第二更新信息，所述第二更新信息用于指示所述基站更新所述第一调制映射表。
可选的，所述第一更新信息或所述第二更新信息由无线资源控制消息承载。
可选的，所述第一更新信息通过物理层下行控制信道传输。
需要说明的是，在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。另外在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分步骤是可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。
以上对本发明所提供的一种兼容高阶调制和低阶调制的传输方法、装置统进行了详细介绍，对于本领域的一般技术人员，依据本发明实施例的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制。

Claims (38)

  1. 一种用于基站兼容高阶调制和低阶调制的传输方法，其特征在于，所述高阶调制包括256正交幅度调制QAM，所述低阶调制包括64QAM、16QAM以及正交相移键控QPSK中的至少一种，所述基站存储有支持所述高阶调制的第一高阶调制映射表，以及支持所述低阶调制的第一低阶调制映射表，所述方法包括：
    所述基站接收用户设备发送的能力等级信息，所述能力等级信息用于表示所述用户设备支持所述高阶调制或支持所述低阶调制；
    所述基站根据所述用户设备发送的能力等级信息，确定用于与所述用户设备通信的第一调制映射表，所述第一调制映射表为所述第一高阶调制映射表或所述第一低阶调制映射表；
    所述基站根据所述调制映射表确定调制编码方案索引，所述调制编码方案索引用于所述用户设备确定调制编码方案；
    所述基站向所述用户设备发送所述调制编码方案索引。
  2. 根据权利要求1所述的方法，其特征在于，所述基站根据所述用户设备发送的能力等级信息，确定用于与所述用户设备通信的第一调制映射表，包括：
    当所述能力等级信息表示所述用户设备支持所述高阶调制时，所述基站确定所述调制映射表为所述第一高阶调制映射表；其中，所述用户设备存储有支持所述高阶调制的第二高阶调制映射表。
  3. 根据权利要求1所述的方法，其特征在于，所述基站根据所述用户设备发送的能力等级信息，确定用于与所述用户设备通信的第一调制映射表，包括：
    当所述能力等级信息表示所述用户设备支持所述高阶调制，且信号干扰噪声比SINR大于SINR门限时，所述基站确定所述第一调制映射表为所述第一高阶调制映射表；或者，
    当所述能力等级信息表示所述用户设备支持所述高阶调制，且信号干扰噪声比SINR小于SINR门限时，所述基站确定所述第一调制映射表为所述第一 低阶调制映射表；
    其中，所述用户设备存储有支持所述高阶调制的第二高阶调制映射表，以及支持所述低阶调制的第二低阶调制映射表。
  4. 根据权利要求1-3任一所述的方法，其特征在于，当所述用户设备存储有支持所述高阶调制的第二高阶调制映射表，以及支持所述低阶调制的第二低阶调制映射表时，所述方法还包括：
    所述基站接收所述用户设备上报的信道质量信息，所述信道质量信息包括信道质量指示符CQI；
    所述基站根据所述信道质量信息，确定是否更新所述第一调制映射表。
  5. 根据权利要求4所述的方法，其特征在于，所述基站根据所述信道质量信息，确定是否更新所述第一调制映射表，包括：
    当所述第一调制映射表为所述第一高阶调制映射表，且所述信道质量信息小于信道质量门限时，所述基站确定更新所述第一调制映射表，更新后的第一调制映射表为所述第一低阶调制映射表；或者，
    当所述第一调制映射表为所述第二低阶调制映射表，且所述信道质量信息大于信道质量门限时，所述基站确定更新所述第一调制映射表，更新后的第一调制映射表为所述第一高阶调制映射表。
  6. 根据权利要求5所述的方法，其特征在于，所述方法还包括：
    所述基站向所述用户设备发送第一更新信息，所述第一更新信息用于指示所述用户设备更新第二调制映射表，所述第二调制映射表用于与所述基站通信，为所述第二高阶调制映射表或所述第二低阶调制映射表。
  7. 根据权利要求1-3任一所述的方法，其特征在于，当所述用户设备存储有支持所述高阶调制的第二高阶调制映射表，以及支持所述低阶调制的第二低阶调制映射表时，所述方法还包括：
    所述基站接收所述用设备发送的第二更新信息，所述第二更新信息用于指示所述基站更新所述第一调制映射表。
  8. 根据权利要求6或7所述的方法，其特征在于，所述第一更新信息或所述第二更新信息由无线资源控制消息承载。
  9. 根据权利要求6或7所述的方法，其特征在于，所述第一更新信息通过物理层下行控制信道传输。
  10. 一种用于用户设备的传输方法，其特征在于，包括：
    所述用户设备向基站发送能力等级信息，所述能力等级信息用于表示所述用户设备支持高阶调制或低阶调制；其中，所述高阶调制包括256正交幅度调制QAM，所述低阶调制包括64QAM、16QAM以及正交相移键控QPSK中的至少一种，所述基站存储有支持所述高阶调制的第一高阶调制映射表，以及支持所述低阶调制的第一低阶调制映射表；
    所述用户设备接收所述基站发送的调制编码方案索引，所述调制编码方案索引由所述基站根据第一调制映射表确定，所述第一调制映射表为所述第一高阶调制映射表或所述第一低阶调制映射表；
    所述用户设备确定与所述基站通信的第二调制映射表，并根据所述第二调制映射表和所述调制编码方案索引确定调制编码方案；
    其中，所述用户设备至少存储有支持所述高阶调制的第二高阶调制映射表和支持所述低阶调制的第二低阶调制映射表中的一种，所述第二调制映射表为所述第二高阶调制映射表或所述第二低阶调制映射表。
  11. 根据权利要求10所述的方法，其特征在于，当所述用户设备存储有支持所述高阶调制的第二高阶调制映射表时，所述用户设备确定与所述基站通信的第二调制映射表，包括：
    所述用户设备默认使用所述第二高阶调制映射表为所述第二调制映射表。
  12. 根据权利要求10所述的方法，其特征在于，当所述用户设备存储有支持所述高阶调制的第二高阶调制映射表和支持所述低阶调制的第二低阶调制映射表时，所述用户设备确定与所述基站通信的第二调制映射表，包括：
    当信号干扰噪声比SINR大于SINR门限时，所述用户设备确定所述第二调制映射表为所述第二高阶调制映射表；或者，
    当信号干扰噪声比SINR小于SINR门限时，所述用户设备确定所述第二调制映射表为所述第二低阶调制映射表。
  13. 根据权利要求10至12任一项所述的方法，其特征在于，当所述用户 设备存储有支持所述高阶调制的第二高阶调制映射表和支持所述低阶调制的第二低阶调制映射表时，所述方法还包括：
    所述用户设备向所述基站发送信道质量信息，所述信道质量信息用于所述基站确定是否更新所述第一调制映射表，所述信道质量信息包括信道质量指示符CQI。
  14. 根据权利要求13所述的方法，其特征在于，所述方法还包括：
    所述用户设备接收所述基站发送的第一更新信息，并根据所述第一更新信息更新所述第二调制映射表。
  15. 根据权利要求10-12任一所述的方法，其特征在于，当所述用户设备存储有支持所述高阶调制的第二高阶调制映射表和支持所述低阶调制的第二低阶调制映射表时，所述方法还包括：
    所述用户设备确定信道质量信息，所述信道质量信息包括信道质量指示符；
    所述用户设备根据所述信道质量信息，确定是否更新所述第二调制映射表。
  16. 根据权利要求15所述的方法，其特征在于，所述用户设备根据所述信道质量信息，确定是否更新所述第二调制映射表，包括：
    当所述第二调制映射表为所述第二高阶调制映射表，且所述信道质量信息小于信道质量门限时，所述用户设备确定更新所述第二调制映射表，更新后的第二调制映射表为所述第二低阶调制映射表；或者，
    当所述第二调制映射表为所述第二低阶调制映射表，且所述信道质量信息大于信道质量门限时，所述用户设备确定更新所述第二调制映射表，更新后的第二调制映射表为所述第二高阶调制映射表。
  17. 根据权利要求16所述的方法，其特征在于，所述方法还包括：
    所述用户设备向所述基站发送第二更新信息，所述第二更新信息用于指示所述基站更新所述第一调制映射表。
  18. 根据权利要求14或17所述的方法，其特征在于，所述第一更新信息或所述第二更新信息由无线资源控制消息承载。
  19. 根据权利要求14或17所述的方法，其特征在于，所述第一更新信息通过物理层下行控制信道传输。
  20. 一种基站，其特征在于，所述基站兼容高阶调制和低阶调制，所述高阶调制包括256正交幅度调制QAM，所述低阶调制包括64QAM、16QAM以及正交相移键控QPSK中的至少一种，所述基站包括：
    第一接收单元，确定单元，第一发送单元，以及存储有支持所述高阶调制的第一高阶调制映射表和支持所述低阶调制的第一低阶调制映射表的第一存储单元；
    所述第一接收单元，用于接收用户设备发送的能力等级信息，所述能力等级信息用于表示所述用户设备支持所述高阶调制或支持所述低阶调制；
    所述确定单元，用于根据所述用户设备发送的能力等级信息，确定用于与所述用户设备通信的第一调制映射表，所述第一调制映射表为所述第一高阶调制映射表或所述第一低阶调制映射表；
    所述确定单元，还用于根据所述调制映射表确定调制编码方案索引，所述调制编码方案索引用于所述用户设备确定调制编码方案；
    所述第一发送单元，用于向所述用户设备发送所述调制编码方案索引。
  21. 根据权利要求20所述基站，其特征在于，所述确定单元中根据所述用户设备发送的能力等级信息，确定用于与所述用户设备通信的第一调制映射表，包括：
    当所述能力等级信息表示所述用户设备支持所述高阶调制时，所述基站确定所述调制映射表为所述第一高阶调制映射表；其中，所述用户设备存储有支持所述高阶调制的第二高阶调制映射表。
  22. 根据权利要求20所述基站，其特征在于，所述确定单元中根据所述用户设备发送的能力等级信息，确定用于与所述用户设备通信的第一调制映射表，包括：
    当所述能力等级信息表示所述用户设备支持所述高阶调制，且信号干扰噪声比SINR大于SINR门限时，所述基站确定所述第一调制映射表为所述第一高阶调制映射表；或者，
    当所述能力等级信息表示所述用户设备支持所述高阶调制，且信号干扰噪声比SINR小于SINR门限时，所述基站确定所述第一调制映射表为所述第一低阶调制映射表；
    其中，所述用户设备存储有支持所述高阶调制的第二高阶调制映射表，以及支持所述低阶调制的第二低阶调制映射表。
  23. 根据权利要求20至22任一项所述基站，其特征在于，当所述用户设备存储有支持所述高阶调制的第二高阶调制映射表，以及支持所述低阶调制的第二低阶调制映射表时，
    所述第一接收单元，还用于接收所述用户设备上报的信道质量信息，所述信道质量信息包括信道质量指示符CQI；
    所述确定单元，还用于根据所述信道质量信息，确定是否更新所述第一调制映射表。
  24. 根据权利要求23所述基站，其特征在于，所述确定单元中根据所述信道质量信息，确定是否更新所述第一调制映射表，包括：
    当所述第一调制映射表为所述第一高阶调制映射表，且所述信道质量信息小于信道质量门限时，所述基站确定更新所述第一调制映射表，更新后的第一调制映射表为所述第一低阶调制映射表；或者，
    当所述第一调制映射表为所述第二低阶调制映射表，且所述信道质量信息大于信道质量门限时，所述基站确定更新所述第一调制映射表，更新后的第一调制映射表为所述第一高阶调制映射表。
  25. 根据权利要求24所述基站，其特征在于，所述第一发送单元，还用于向所述用户设备发送第一更新信息，所述第一更新信息用于指示所述用户设备更新第二调制映射表，所述第二调制映射表用于与所述基站通信，为所述第二高阶调制映射表或所述第二低阶调制映射表。
  26. 根据权利要求20至22任一项所述装置，其特征在于，当所述用户设备存储有支持所述高阶调制的第二高阶调制映射表，以及支持所述低阶调制的第二低阶调制映射表时，
    所述第一接收单元，还用于接收所述用设备发送的第二更新信息，所述第 二更新信息用于指示所述基站更新所述第一调制映射表。
  27. 根据权利要求25或者26所述基站，其特征在于，所述第一更新信息或所述第二更新信息由无线资源控制消息承载。
  28. 根据权利要求25或者26所述基站，其特征在于，所述第一更新信息通过物理层下行控制信道传输。
  29. 一种用户设备，其特征在于，包括：第二发送单元，第二接收单元，第二确定单元，和第二存储单元；
    所述第二发送单元，用于向基站发送能力等级信息，所述能力等级信息用于表示所述用户设备支持高阶调制或低阶调制；其中，所述高阶调制包括256正交幅度调制QAM，所述低阶调制包括64QAM、16QAM以及正交相移键控QPSK中的至少一种，所述基站存储有支持所述高阶调制的第一高阶调制映射表，以及支持所述低阶调制的第一低阶调制映射表；
    所述第二接收单元，用于接收所述基站发送的调制编码方案索引，所述调制编码方案索引由所述基站根据第一调制映射表确定，所述第一调制映射表为所述第一高阶调制映射表或所述第一低阶调制映射表；
    所述第二确定单元，用于确定与所述基站通信的第二调制映射表，并根据所述第二调制映射表和所述调制编码方案索引确定调制编码方案；
    所述第二存储单元，用于至少存储有支持所述高阶调制的第二高阶调制映射表和支持所述低阶调制的第二低阶调制映射表中的一种，所述第二调制映射表为所述第二高阶调制映射表或所述第二低阶调制映射表。
  30. 根据权利要求29所述用户设备，其特征在于，当所述用户设备存储有支持所述高阶调制的第二高阶调制映射表时，
    所述第二确定单元中确定与所述基站通信的第二调制映射表，包括：
    默认使用所述第二高阶调制映射表为所述第二调制映射表。
  31. 根据权利要求29所述用户设备，其特征在于，当所述用户设备存储有支持所述高阶调制的第二高阶调制映射表和支持所述低阶调制的第二低阶调制映射表时，
    所述第二确定单元中确定与所述基站通信的第二调制映射表，包括：
    当信号干扰噪声比SINR大于SINR门限时，所述用户设备确定所述第二调制映射表为所述第二高阶调制映射表；或者，
    当信号干扰噪声比SINR小于SINR门限时，所述用户设备确定所述第二调制映射表为所述第二低阶调制映射表。
  32. 根据权利要求29至31任一项所述用户设备，其特征在于，所述第二存储单元中存储有支持所述高阶调制的第二高阶调制映射表和支持所述低阶调制的第二低阶调制映射表时，
    所述第二发送单元，还用于向所述基站发送信道质量信息，所述信道质量信息用于所述基站确定是否更新所述第一调制映射表，所述信道质量信息包括信道质量指示符CQI。
  33. 根据权利要求32所述用户设备，其特征在于，所述第二接收单元，还用于接收所述基站发送的第一更新信息；
    所述用户设备还包括：更新单元，用于根据所述第一更新信息更新所述第二调制映射表。
  34. 根据权利要求29至31所述用户设备，其特征在于，所述第二存储单元中存储有支持所述高阶调制的第二高阶调制映射表和支持所述低阶调制的第二低阶调制映射表时，
    所述第二确定单元，还用于确定信道质量信息，所述信道质量信息包括信道质量指示符；根据所述信道质量信息，确定是否更新所述第二调制映射表。
  35. 根据权利要求34所述用户设备，其特征在于，所述第二确定单元中根据所述信道质量信息，确定是否更新所述第二调制映射表，包括：
    当所述第二调制映射表为所述第二高阶调制映射表，且所述信道质量信息小于信道质量门限时，所述用户设备确定更新所述第二调制映射表，更新后的第二调制映射表为所述第二低阶调制映射表；或者，
    当所述第二调制映射表为所述第二低阶调制映射表，且所述信道质量信息大于信道质量门限时，所述用户设备确定更新所述第二调制映射表，更新后的第二调制映射表为所述第二高阶调制映射表。
  36. 根据权利要求35所述用户设备，其特征在于，所述第二发送单元， 还用于向所述基站发送第二更新信息，所述第二更新信息用于指示所述基站更新所述第一调制映射表。
  37. 根据权利要求33或者36所述用户设备，其特征在于，所述第一更新信息或所述第二更新信息由无线资源控制消息承载。
  38. 根据权利要求33或者36所述用户设备，其特征在于，所述第一更新信息通过物理层下行控制信道传输。
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