WO2010133043A1 - 多子帧调度方法、系统及终端、基站 - Google Patents
多子帧调度方法、系统及终端、基站 Download PDFInfo
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- WO2010133043A1 WO2010133043A1 PCT/CN2009/071940 CN2009071940W WO2010133043A1 WO 2010133043 A1 WO2010133043 A1 WO 2010133043A1 CN 2009071940 W CN2009071940 W CN 2009071940W WO 2010133043 A1 WO2010133043 A1 WO 2010133043A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
- H04W52/06—TPC algorithms
- H04W52/14—Separate analysis of uplink or downlink
- H04W52/146—Uplink power control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
Definitions
- Multi-subframe scheduling method system and terminal, base station
- the embodiments of the present invention relate to the field of communications, and in particular, to a multi-subframe scheduling method, system, terminal, and base station.
- the base station carries the indication information of the resource block and the physical downlink shared channel (Physical Downlink Shared CHannel) through the Physical Downlink Control CHannel (PDCCH).
- Resource scheduling indication information such as modulation and coding scheme.
- the PDCCH carries downlink control signaling, uplink control signaling, and common control signaling for all UEs in the cell, including: paging information resource indication, The system information resource indication and the Random Access CHannel (RACH) response information indication.
- RACH Random Access CHannel
- PDCCH information can be transmitted in different downlink control information (Downlink Control Information, DCI) format. Different DCI formats can be distinguished by information bit number or format indication field.
- the UE obtains PDCCH information corresponding to the UE identifier (ID) through a Cyclic Redundancy Check (CRC) and a blind detection process, and further obtains the location of the subframe scheduled by the PDCCH information and other transmission configuration information.
- DCI Downlink Control Information
- ID UE identifier
- CRC Cyclic Redundancy Check
- the subframe scheduled by the PDCCH information is a subframe that carries the PDCCH information, that is, the prior art is a single subframe scheduling.
- the PDCCH information can occupy the first 2, 3 or 4 Orthogonal Frequency Division Multiplexing (OFDM) symbols of each subframe for downlink control signaling transmission. .
- OFDM Orthogonal Frequency Division Multiplexing
- the number of Control Channel Elements (CCEs) available in the case of 2 antenna transmission is 2, and the number of CCEs available in the case of antenna transmission is 2
- the number of available CCEs in the case of 2 antenna transmission is 4, and the number of CCEs available in the case of 4 antenna transmission is 3;
- PDCCH information can be occupied For the first 4 OFDM symbols of each subframe the number of CCEs available for 2 antenna transmission is 6, and the number of CCEs available for 4 antenna transmission is 5.
- the paging information resource indication, the system information resource indication, and the RACH response information in the PDCCH information indicate that 4 or 8 CCEs need to be occupied.
- the number of CCEs used for UE resource scheduling is not more than 2, that is, the PDCCH resources used for UE resource scheduling are less.
- a new downlink packet (ie, a newly transmitted data packet) and a partial retransmission packet (that is, a retransmitted data packet) of each UE dynamic resource scheduling on each subframe require a corresponding downlink scheduling grant or an uplink scheduling grant PDCCH. Therefore, if there are fewer PDCCH resources for UE resource scheduling, the number of schedulable UEs is affected. Summary of the invention
- the embodiments of the present invention provide a multi-subframe scheduling method, system, and terminal, and a base station, which are used to save resources occupied by control signaling.
- the embodiment of the invention provides a multi-subframe scheduling method, including:
- downlink physical control channel PDCCH information that includes time domain resource indication information, where the time domain resource indication information is used to indicate information of multiple subframes scheduled by the PDCCH information;
- the embodiment of the invention provides a terminal, including:
- an information receiving module configured to receive, by the base station, downlink physical control channel PDCCH information that includes time domain resource indication information, where the time domain resource indication information is used to indicate the PDCCH information Information of multiple subframes of degree;
- a data transceiver module configured to send and receive data on the multiple subframes scheduled by the PDCCH information according to the PDCCH information.
- An embodiment of the present invention provides a base station, including:
- An information sending module configured to send a downlink physical control channel that includes time domain resource indication information
- the time domain resource indication information is used to indicate information of multiple subframes scheduled by the PDCCH information
- a data transceiver module configured to send and receive data on multiple subframes scheduled by the PDCCH information.
- the embodiment of the invention provides a multi-subframe scheduling system, including:
- a terminal configured to receive a downlink physical control channel that is sent by the base station and includes time domain resource indication information
- PDCCH information and, according to the PDCCH information, transmitting and receiving data to the base station in the multiple subframes scheduled by the PDCCH information; where the time domain resource indication information is used to indicate information of multiple subframes scheduled by the PDCCH information;
- a base station configured to send the PDCCH information and send and receive data to the terminal.
- the PDCCH information including the time domain indication information in the embodiment of the present invention is configured with multiple subframes. According to the PDCCH information, the UE can send and receive data in multiple subframes, which saves resources occupied by control signaling; Next, the number of schedulable UEs is increased. DRAWINGS
- FIG. 1 is a flowchart of a multi-subframe scheduling method according to an embodiment of the present invention
- FIG. 2 is a flowchart of a multi-subframe scheduling method according to Embodiment 2 of the present invention.
- FIG. 3 is a schematic diagram of multi-subframe joint scheduling in a multi-subframe scheduling method according to Embodiment 2 of the present invention
- FIG. 4 is a flowchart of a method for scheduling three multi-subframes according to an embodiment of the present invention
- FIG. 5 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
- FIG. 6 is a schematic structural diagram of a base station according to an embodiment of the present invention.
- FIG. 7 is a schematic structural diagram of a multi-subframe scheduling system according to an embodiment of the present invention. detailed description
- FIG. 1 is a flowchart of a multi-subframe scheduling method according to an embodiment of the present invention. As shown in FIG. 1, the embodiment specifically includes the following steps:
- Step 101 Receive PDCCH information that is sent by the base station and includes time domain resource indication information, where the time domain resource indication information is used to indicate information about multiple subframes scheduled by the PDCCH information, where the multiple subframes are represented as at least two subframes.
- Step 102 Transceive and transmit data in multiple subframes scheduled by PDCCH information according to PDCCH information.
- the PDCCH information that includes the time domain indication information received in this embodiment schedules multiple subframes, and saves resources occupied by control signaling. Under certain network resource conditions, the number of schedulable UEs is increased.
- FIG. 2 is a flowchart of a multi-subframe scheduling method according to Embodiment 2 of the present invention.
- the multi-subframe scheduling in the following data transmission process is taken as an example.
- the embodiment specifically includes the following steps:
- Step 200 The base station configures PDCCH information according to a new DCI format, where the new DCI format is the same as the information bit load carried by the standard DCI format in the LTE system.
- Step 201 The UE receives the PDCCH information that is sent by the base station and includes the PDCCH information, where the time domain indication information is used to indicate the location of the multiple subframes scheduled by the PDCCH information.
- Step 202 Receive downlink data by using the same transmission configuration information in multiple subframes scheduled by PDCCH information.
- the base station configures the PDCCH information by using a new DCI format, which may be formed by changing the standard DCI format in the LTE system, where the standard DCI format may be 10 in the LTE R8 system.
- a new DCI format which may be formed by changing the standard DCI format in the LTE system, where the standard DCI format may be 10 in the LTE R8 system.
- DCI format 0, DCI format 1, DCI format 1A, DCI format 1B, DCI format 1C, DCI format 1D, DCI format 2, DCI format 2A, DCI format 3, and DCI format 3A is changed to form a new DCI format as shown in Table 1.
- the PDCCH information includes DCI format distinguishing information carried in the DCI format distinguishing domain, centralized or distributed transmission information carried in the centralized or distributed transmission domain, and time domain resources.
- the time domain resource indication information of the indication domain bearer, the modulation coding level information carried by the modulation coding level domain, the HARQ process number information carried by the HARQ process number field, the new data indication information carried by the new data indication domain, and the redundancy version indication domain bearer The redundancy version indication information, the power control command word information carried by the power control command word field, the CRC information carried by the CRC domain, and the additional bit information carried by the additional bit field.
- the centralized or distributed transmission information and the time domain resource indication information may be referred to as resource configuration information, modulation coding level information, HARQ process number information,
- the new data indication information, the redundancy version indication information, and the power control command word information may be collectively referred to as transmission configuration information.
- This multi-subframe joint scheduling which allocates all frequency domains to a user's scheduling mode, can notify the UE of the startup or cancellation of the multi-subframe scheduling configuration process through high layer signaling or other physical layer signaling.
- the frequency domain resource indication domain that reuses the standard DCI format carries the time domain resource indication information, that is, the frequency domain resource indication domain of the existing DCI format 1A is occupied.
- the 5 bit is used as the time domain resource indication field, that is, the PDCCH information received by the UE in step 201 includes the time domain resource indication information and the frequency domain resource indication information is no longer included.
- the time slot or the subframe is used as a unit. All frequency domain resources of the slot or subframe are allocated to a single UE for data transmission.
- the 5 bits occupied by the frequency domain resource indication field in the existing DCI format 1 A are used as the time domain resource indication field, and the bits occupied by other domains in the existing DCI format 1A may be used as the time.
- the domain resource indicates the domain.
- the embodiment may include: the UE determining the DCI format used by the PDCCH information according to the number of bits of the PDCCH information or the DCI format distinguishing information included in the PDCCH information.
- the number of bits of the PDCCH information carried by the different DCI formats may be different, so the UE may determine the DCI format used by the PDCCH information according to the number of bits of the PDCCH information.
- the frequency domain resource indication field in the standard DCI format is redefined, and is defined as a time domain resource indication domain, but the number of bits occupied by the time domain resource indication domain may be the same as the frequency domain resource indication domain. The number is the same, and the other fields are not redefined. Therefore, the information bit load carried by the new DCI format and the standard DCI format can be the same. It can be said that the new DCI format and the standard DCI format can carry the same number of information bits. Thus, the complexity of the subsequent blind detection process is not improved compared to the prior art.
- the DCI format adopted by the PDCCH information can be determined by the DCI format distinguishing information. Between the steps 201 and 202, the embodiment may further include: the UE acquiring the time domain resource indication information and the transmission configuration information in the PDCCH information by using a blind detection method.
- the time domain resource indication information obtained by the step is used to indicate the location of the two or more subframes of the PDCCH information scheduling.
- the time domain resource indication information may indicate the PDCCH information by using a bitmap mapping manner or other mapping manner. The position of more than two subframes scheduled.
- the PDCCH time domain resource indication information of the current subframe is obtained as "01100".
- the bitmap mapping mode is used for indication
- the first bit of the time domain resource indication information corresponds to the current PDCCH.
- "0" may indicate that the PDCCH does not schedule the subframe
- "1" indicates that the transmission or resource indication of the subframe operates according to the indication of the PDCCH.
- the time domain resource indication information of the PDCCH indicates the second subframe and the third subframe after the subframe in which the current PDCCH is to be scheduled and the subframe in which the PDCCH is located.
- the HARQ process number corresponding to the data packet in the different subframes may be obtained according to the HARQ process number field in the PDCCH and the time domain resource indication field received by the UE in the downlink transmission process.
- the PDCCH time domain resource indication information of the current subframe is obtained as "01100"
- the bitmap is indicated by the bitmap mapping mode
- the HARQ process number field in the current subframe PDCCH indicates 2
- the current subframe of the UE corresponds to The HARQ process number is 2.
- the HARQ process ID is incremented according to the time domain scheduling indication. Specifically, the HARQ process number of the second subframe after the subframe in which the current PDCCH is to be scheduled is 3, and the current subframe.
- the third subframe after the HARQ process number is 4.
- the domain other than the time domain resource indication field in the new DCI format may be the same as the DCI format of the existing single subframe scheduling, so that, in the multi-subframe scheduling, the PDCCH information of one subframe is scheduled.
- All subframes adopt the same transmission configuration information. For example, all subframes scheduled by PDCCH information of one subframe use modulation coding level information, HARQ process number information, and new data indication information carried in the DCT format shown in Table 1. Redundancy version indication information and power control command word information, that is, multiple subframes of joint scheduling are used in the same subframe as the PDCCH information. Transfer configuration information.
- the PDCCH information of one subframe may be scheduled to carry multiple subframes of the newly transmitted packet, or may be configured to carry multiple subframes carrying the retransmission packet, and multiple subframes carrying both the retransmission packet and the new transmission packet cannot pass through one sub-frame.
- the PDCCH information scheduling of the frame is implemented.
- step 202 the UE receives the downlink data in the subframe scheduled by the PDCCH information by using the same transmission configuration information as the subframe in which the PDCCH information is used.
- FIG. 3 is a schematic diagram of multi-subframe joint scheduling in a multi-subframe scheduling method according to Embodiment 2 of the present invention.
- the downlink subframe A carries PDCCH information for performing joint scheduling of multiple subframes.
- the UE determines the DCI format used by the PDCCH information, and obtains the PDCCH information that is carried on the subframe A by using the blind detection method, so as to know that the PDCCH information co-schedules four consecutive downlink subframes including the subframe A, that is, the subframe.
- A, B, C, and D, and the time domain resource locations and other transmission configuration information of these subframes receive downlink data on subframes A, B, C, and D according to the transmission configuration information.
- subframes E and H need to receive new packets
- subframe E ⁇ carries PDCCH information for scheduling subframes E and H
- subframes F and G need to receive retransmission packets
- subframe F carries scheduling.
- PDCCH information of subframes F and G
- the joint scheduling subframe also needs to obtain the corresponding HARQ process number corresponding to each subframe according to the HA Q process number information transmitted in the PDCCH information.
- the user terminal may obtain the HARQ process number corresponding to the first subframe according to the HARQ process number information carried in the PDCCH information, and obtain the HARQ process number corresponding to each subframe according to the time domain resource indication information.
- This embodiment provides a new DCI format formed by changing the existing DCI format 1 A to carry the PDCCH information.
- the DCI format carries the PDCCH information to remain the same as the standard DCI format bits.
- the multi-subframe joint scheduling is implemented, that is, the PDCCH information of one subframe can be used to notify the resource configuration information and the transmission configuration information of the multiple subframes. Specifically, the PDCCH information of one subframe received by the UE is scheduled by multiple subframes.
- the UE may use the same transmission configuration information to receive downlink data in multiple subframes, thereby reducing resources occupied by the PDCCH information, that is, saving resources occupied by the control signaling.
- the spectrum efficiency is improved; under certain network resource conditions, the number of scheduled subframes is increased, thereby increasing the number of schedulable UEs. Since the information bits carried by the standard DCI format are the same, the embodiment avoids the complexity of increasing the PDCCH detection by the UE.
- This multi-subframe scheduling method can also be applied in the uplink data transmission process.
- FIG. 4 is a flowchart of a method for scheduling three multi-subframes according to an embodiment of the present invention.
- the multi-subframe scheduling in the following data transmission process is taken as an example.
- the embodiment specifically includes the following steps:
- Step 301 The UE receives the PDCCH information that is sent by the base station and includes the PDCCH information, where the time domain indication information is used to indicate the location of the multiple subframes scheduled by the PDCCH information.
- Step 302 Receive downlink data by using different transmission configuration information in multiple subframes scheduled by PDCCH information.
- the PDCCH information received by the UE is carried in a new DCI format, and the new DCI format is different from the new DCI format in the second embodiment in that the new DCI format sets a separate transmission for each subframe.
- the configuration field that is, the new DCI format in this embodiment carries different transmission configuration information of each subframe.
- the new DCI format carries different modulation and coding level information, HARQ process number information, and new data for each subframe.
- the indication information and the redundancy version indication information may be the same for the power control command word information of each subframe that is carried.
- the time domain scheduling mode is adopted, and all frequency domain resources of one subframe are allocated to a single UE for data transmission in units of time slots or subframes.
- this embodiment may also include: a ratio of the UE according to the PDCCH information.
- the DCI format discrimination information included in the PDCCH information is determined by the DCI format distinguishing information included in the PDCCH information.
- the UE obtains the time domain resource indication information and the transmission configuration information in the PDCCH information by using the blind detection method.
- a time domain resource indication field is defined in the new DCI format, and the time domain resource indication information carried by the time domain resource indication domain indicates the scheduling of the PDCCH information by using a bitmap mapping manner or other mapping manner. Subframe position.
- the PDCCH information includes transmission configuration information of each configurable subframe, where the transmission configuration information may include: modulation coding level information, HARQ process number information, new data indication information, redundancy version indication information, and power control command words. Information, etc. Therefore, multiple subframes of the joint scheduling can use the PDCCH information of one subframe to obtain transmission configuration information of different subframes, which increases the flexibility of the base station scheduling data, and increases system performance through more flexible resource configuration.
- the multiple subframes scheduled by the PDCCH information of one subframe respectively have separate new packet indication information, so in this embodiment, the subframe carrying the new transport packet and the retransmission packet may pass the PDCCH information of one subframe.
- This multi-subframe scheduling method can also be applied in the uplink data transmission process.
- FIG. 5 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
- the embodiment specifically includes: an information receiving module 11 and a data transceiver module 12, wherein the information receiving module 11 receives PDCCH information that is sent by a base station and includes time domain resource indication information, where the time domain resource indication information is used.
- the information indicating the plurality of subframes scheduled by the PDCCH information; the data transceiver module 12 transmits and receives data in a plurality of subframes scheduled by the PDCCH information according to the PDCCH information.
- the PDCCH information may further include transmission configuration information, and the data transceiver module 12 may be specifically configured to send and receive data by using the same transmission configuration information in multiple subframes scheduled by the PDCCH information, or may be specifically used for scheduling PDCCH information. In the sub-frames, data is transmitted and received using different transmission configuration information.
- the PDCCH information that includes the time domain indication information received in this embodiment schedules multiple subframes, which saves resources occupied by control signaling; and increases the number of schedulable UEs under certain network resource conditions.
- FIG. 6 is a schematic structural diagram of a base station according to an embodiment of the present invention. As shown in FIG. 6, the embodiment specifically includes: The information sending module 21 and the data transceiving module 22, wherein the information transmitting module 21 transmits PDCCH information including time domain resource indication information, where the time domain resource indication information is used to indicate information of a plurality of subframes scheduled by the PDCCH information; Data is transmitted and received on a plurality of subframes in which PDCCH information is scheduled.
- this embodiment may further include a configuration module 23, which is used to follow the new
- the DCI format configures PDCCH information, which is the same as the information bits carried in the standard DCI format in the LTE system.
- the PDCCH information including the time domain indication information sent in this embodiment schedules multiple subframes, which saves resources occupied by control signaling; and increases the number of schedulable UEs under certain network resource conditions.
- FIG. 7 is a schematic structural diagram of a multi-subframe scheduling system according to an embodiment of the present invention.
- the embodiment specifically includes: a terminal 31 and a base station 32, where the terminal 31 receives PDCCH information that is sent by the base station 32 and includes time domain resource indication information, where the time domain resource indication information is used to indicate PDCCH information scheduling. Information of a plurality of subframes; and transmitting and receiving data to the base station 32 in a plurality of subframes scheduled by the PDCCH information according to the PDCCH information; and the base station 32 transmits the PDCCH information and the transmitted and received data to the terminal 31.
- the UE receives the PDCCH information including the time domain indication information sent by the base station, and allocates multiple subframes, which saves resources occupied by the control signaling; and increases the number of schedulable UEs under certain network resource conditions.
- the embodiment of the present invention can be applied not only to the 1.4Mhz small bandwidth system in LTE, but also to other systems in which the number of schedulable UEs is limited due to limited control signaling resources.
- the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.
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Description
多子帧调度方法、 系统及终端、 基站
技术领域
本发明实施例涉及通信领域, 尤其涉及一种多子帧调度方法、 系统及终 端、 基站。 背景技术 的长期演进(Long Term Evolved, 简称: LTE ) 系统中, 基站通过下行物理 控制信道(Physical Downlink Control CHannel, 简称: PDCCH )承载资源块 的指示信息及下行物理共享信道( Physical Downlink Shared CHannel, 筒称: PDSCH ) 调制编码方式等资源调度指示信息。 具体地, PDCCH承载着面向 每个用户终端 (User Equipment, 简称: UE ) 的下行控制信令、 上行控制信 令以及面向小区内所有 UE的公共控制信令, 其中包括: 寻呼信息资源指示、 系统信息资源指示和随机接入信道( Random Access CHannel, 简称: RACH ) 应答信息指示。
在不同传送模式下, 可以采用不同的下行控制信息 (Downlink Control Information, 筒称: DCI )格式传输 PDCCH信息, 不同的 DCI格式可以通过 信息比特数或格式指示域进行区分。 UE 通过循环冗余校验 ( Cyclic Redundancy Check, 简称: CRC )和盲检测过程获得与 UE标识( ID )对应的 PDCCH信息,进而得到 PDCCH信息所调度子帧的位置和其他传输配置信息。
在 LTE系统中, PDCCH信息所调度的子帧即为承载该 PDCCH信息的 子帧, 也就是说, 现有技术为单子帧调度。 以 LTE中 1.4Mhz小带宽系统为 例, PDCCH信息可以占用每个子帧的前 2、3或 4个正交频分复用(Orthogonal Frequency Division Multiplexing, 简称: OFDM )符号用于下行控制信令传输。
当 PDCCH信息可以占用每个子帧的前 2个 OFDM符号时, 2天线传输情况 下可用的控制信道元素 (Control Channel Element, 简称: CCE )个数为 2, 4 天线传输情况下可用的 CCE个数为 1; 当 PDCCH信息可以占用每个子帧的 前 3个 OFDM符号时, 2天线传输情况下可用的 CCE个数为 4, 4天线传输 情况下可用的 CCE个数为 3; 当 PDCCH信息可以占用每个子帧的前 4个 OFDM符号时, 2天线传输情况下可用的 CCE个数为 6, 4天线传输情况下 可用的 CCE个数为 5。
一般情况下, PDCCH信息中的寻呼信息资源指示、 系统信息资源指示 和 RACH应答信息指示需要占用 4或 8个 CCE。在这些当以上资源指示信息 存在的情况下, 用于 UE资源调度的 CCE个数不大于 2, 即用于 UE资源调 度的 PDCCH资源较少。 由于每个子帧上每个 UE动态资源调度的新传包(即 新传的数据包) 和部分重传包 (即重传的数据包)都需要对应的下行调度授 权或上行调度授权的 PDCCH,所以若用于 UE资源调度的 PDCCH资源较少 , 因此会影响可调度的 UE数量。 发明内容
本发明实施例提供了一种多子帧调度方法、 系统及终端、 基站, 用以节 省控制信令占用的资源。
本发明实施例提供了一种多子帧调度方法, 包括:
接收基站发送的包含时域资源指示信息的下行物理控制信道 PDCCH信 息; 所述时域资源指示信息用于指示所述 PDCCH信息调度的多个子帧的信 息;
根据所述 PDCCH信息, 在所述 PDCCH信息调度的多个子帧上收发数据。 本发明实施例提供了一种终端, 包括:
信息接收模块, 用于接收基站发送的包含时域资源指示信息的下行物理 控制信道 PDCCH信息;所述时域资源指示信息用于指示所述 PDCCH信息调
度的多个子帧的信息;
数据收发模块,用于根据所述 PDCCH信息,在所述 PDCCH信息调度的 多个子帧上收发数据。
本发明实施例提供了一种基站, 包括:
信息发送模块, 用于发送包含时域资源指示信息的下行物理控制信道
PDCCH信息; 所述时域资源指示信息用于指示所述 PDCCH信息调度的多个 子帧的信息;
数据收发模块, 用于在所述 PDCCH信息调度的多个子帧上收发数据。 本发明实施例提供了一种多子帧调度系统, 包括:
终端, 用于接收基站发送的包含时域资源指示信息的下行物理控制信道
PDCCH信息; 并根据所述 PDCCH信息, 在所述 PDCCH信息调度的多个子 帧上向基站收发数据; 其中, 所述时域资源指示信息用于指示所述 PDCCH 信息调度的多个子帧的信息;
基站, 用于向终端发送所述 PDCCH信息和收发数据。
本发明实施例中包含时域指示信息的 PDCCH信息调度了多个子帧, 根据 该 PDCCH信息, UE可以在多个子帧上收发数据,这样节省了控制信令占用的 资源; 在一定的网络资源条件下, 增加了可调度的 UE个数。 附图说明
图 1为本发明实施例一多子帧调度方法的流程图;
图 2为本发明实施例二多子帧调度方法的流程图;
图 3为本发明实施例二多子帧调度方法中多子帧联合调度的示意图; 图 4为本发明实施例三多子帧调度方法的流程图;
图 5为本发明实施例终端的结构示意图;
图 6为本发明实施例基站的结构示意图;
图 7为本发明实施例多子帧调度系统的结构示意图。
具体实施方式
下面通过附图和实施例, 对本发明实施例的技术方案做进一步的详细描 述。
图 1为本发明实施例一多子帧调度方法的流程图。 如图 1所示, 本实施例 具体包括如下步骤:
步骤 101、 接收基站发送的包含时域资源指示信息的 PDCCH信息, 该时 域资源指示信息用于指示 PDCCH信息调度的多个子帧的信息; 其中多个子帧 表示为至少两个子帧;
步骤 102、根据 PDCCH信息,在 PDCCH信息调度的多个子帧上收发数 据。
本实施例接收的包含时域指示信息的 PDCCH信息调度了多个子帧, 节 省了控制信令占用的资源; 在一定的网络资源条件下, 增加了可调度的 UE 个数。
图 2为本发明实施例二多子帧调度方法的流程图。本实施例以下行数据传 输过程中的多子帧调度为例进行描述, 如图 2所示, 本实施例具体包括如下步 骤:
步骤 200、 基站按照新 DCI格式配置 PDCCH信息, 该新 DCI格式与 LTE系 统中的标准 DCI格式承载的信息比特负载相同;
步骤 201、 UE接收基站下发的包含时域指示信息和传输配置信息的 PDCCH信息,其中时域指示信息用于指示该 PDCCH信息调度的多个子帧的位 置;
步骤 202、 在 PDCCH信息调度的多个子帧上, 采用相同的传输配置信息 接收下行数据。
在步骤 200中, 基站配置 PDCCH信息釆用了一种新 DCI格式, 该新 DCI格 式可以为在 LTE系统中标准 DCI格式基础上作改变而形成的, 其中标准 DCI格 式可以为 LTE R8系统中 10种不同 DCI格式中的任意一种 ,这 10种 DCI格式包括
DCI格式 0、 DCI格式 1、 DCI格式 1A、 DCI格式 1B、 DCI格式 1C、 DCI格式 1D、 DCI格式 2、 DCI格式 2A、 DCI格式 3和 DCI格式 3A。 以 1.4Mhz系统中 DCI格式 1A为例, 在该 DCI格式 1 A基础上作改变形成如表 1所示新 DCI格式。
表 1. 新 DCI格式的示意表
若 PDCCH信息采用表 1所示的新 DCI格式进行配置, 则 PDCCH信息包含 DCI格式区分域承载的 DCI格式区分信息、集中式或分布式传输域承载的集中 式或分布式传输信息、 时域资源指示域承载的时域资源指示信息、 调制编码 等级域承载的调制编码等级信息、 HARQ进程号域承载的 HARQ进程号信息、 新数据指示域承载的新数据指示信息、 冗余版本指示域承载的冗余版本指示 信息、 功控命令字域承载的功控命令字信息、 CRC域承载的 CRC信息以及附 加比特域承载的附加比特信息。 其中, 集中式或分布式传输信息和时域资源 指示信息可以被称为资源配置信息, 调制编码等级信息、 HARQ进程号信息、
新数据指示信息、 冗余版本指示信息和功控命令字信息可以被统称为传输配 置信息。
这种多子帧联合调度, 全部频域分配给一个用户的调度方式, 可以通过 高层信令或其他物理层信令通知 UE这种多子帧调度的配置过程的启动或取 消。
从表 1可以看出, 本实施例的新 DCI格式中, 重用标准 DCI格式的频域资 源指示域携带时域资源指示信息, 也就是说, 将已有 DCI格式 1A中频域资源 指示域占用的 5bit用作时域资源指示域, 即步骤 201中 UE接收的 PDCCH信息 中包括时域资源指示信息而不再包括频域资源指示信息, 本实施例以时隙或 子帧为单位, 将一个时隙或子帧的全部频域资源分配给单独一个 UE进行数据 传输。
需要说明的是, 本实施例不仅限于将已有 DCI格式 1 A中频域资源指示域 占用的 5bit用作时域资源指示域,也可以将已有 DCI格式 1A中其他域占用的比 特用作时域资源指示域。
在步骤 201和 202之间, 本实施例可以包括: UE根据 PDCCH信息的比特 数或 PDCCH信息中包含的 DCI格式区分信息, 确定 PDCCH信息采用的 DCI格 式。
具体地说,由于不同的 DCI格式所承载的 PDCCH信息的比特数可以不同, 所以 UE可以根据 PDCCH信息的比特数确定 PDCCH信息采用的 DCI格式。
本实施例采用将标准 DCI格式中的频域资源指示域进行重新定义, 定义 为时域资源指示域, 但该时域资源指示域所占用的比特数可以与频域资源指 示域所占用的比特数相同, 并且其他域没有重新定义, 因此, 新 DCI格式与 标准 DCI格式承载的信息比特负载可以相同,也可以说,新 DCI格式与标准 DCI 格式承载的信息比特数可以相同。 这样, 与现有技术相比, 后续执行的盲检 测过程的复杂度不会提高。 在这种情况下, 可以通过 DCI格式区分信息来确 定 PDCCH信息采用的 DCI格式。
在步骤 201和 202之间, 本实施例还可以包括: UE通过盲检测方法, 获取 PDCCH信息中的时域资源指示信息和传输配置信息。
该步骤获取的时域资源指示信息用于指示 PDCCH信息调度的两个以上 子帧的位置, 具体地, 时域资源指示信息可以通过位图 (bitmap ) 映射方式 或其他映射方式来指示 PDCCH信息所调度的两个以上子帧的位置。
例如在下行传输过程中, 设获得当前子帧 PDCCH时域资源指示信息为 "01100" , 当釆用位图映射方式进行指示时, 时域资源指示信息的第 1个 bit对应着当前 PDCCH所在子帧之后的第一个子帧, "0"可以表示此 PDCCH 不调度这个子帧, "1 " 表示此子帧的传输或资源指示按照此 PDCCH的指示 进行操作。如上所述,此 PDCCH的时域资源指示信息指示了当前 PDCCH要调 度所在子帧之后的第二个子帧和第三个子帧和 PDCCH所在子帧。
由于每个数据包对应不同 HARQ进程, 在下行传输过程中, 可以根据 UE 接收到的 PDCCH中的 HARQ进程号域, 和时域资源指示域获得不同子帧中数 据包所对应的 HARQ进程号。
例如, 设获得当前子帧 PDCCH时域资源指示信息为 "01100" , 当采用 位图映射方式进行指示时, 若当前子帧 PDCCH中 HARQ进程号域指示的是 2, 则 UE当前子帧对应的 HARQ进程号为 2。 对其他通过此 PDCCH联合调度的子 帧来说, HARQ进程号根据时域调度指示递加, 具体地, 当前 PDCCH要调度 所在子帧之后的第二个子帧的 HARQ进程号为 3 , 当前子帧之后的第三个子帧 HARQ进程号为 4。
本实施例中, 新 DCI格式中除了时域资源指示域以外的其他域可以与现 有的单子帧调度的 DCI格式相同,这样,在多子帧调度时,一个子帧的 PDCCH 信息所调度的所有子帧均采用相同的传输配置信息, 例如: 一个子帧的 PDCCH信息调度的所有子帧均釆用表 1所示的 DCT格式承载的调制编码等级 信息、 HARQ进程号信息、 新数据指示信息、 冗余版本指示信息和功控命令 字信息, 也就是说, 联合调度的多个子帧均使用与 PDCCH信息所在子帧相同
的传输配置信息。 这样, 一个子帧的 PDCCH信息可以调度承载新传包的多个 子帧, 也可以调度承载重传包的多个子帧, 而既承载重传包又承载新传包的 多个子帧不能通过一个子帧的 PDCCH信息调度实现。
在步骤 202中, UE在 PDCCH信息所调度的子帧上, 釆用与 PDCCH信息所 在子帧相同的传输配置信息接收下行数据。
下面通过一个具体的例子来说明本实施例的技术方案。图 3为本发明实施 例二多子帧调度方法中多子帧联合调度的示意图。 如图 3所示, 下行子帧 A承 载着进行多子帧联合调度的 PDCCH信息。 UE确定 PDCCH信息所采用的 DCI 格式, 并通过盲检测方法获得承载在子帧 A上的 PDCCH信息, 以获知该 PDCCH信息共调度包括子帧 A在内的连续 4个下行子帧, 即子帧 A、 B、 C和 D, 以及这些子帧的时域资源位置和其他传输配置信息; 根据传输配置信息, 在 子帧 A、 B、 C和 D上接收下行数据。
当 PDCCH信息调度的多个子帧中部分数据包发生错误, 需要对错误数据 包进行重传时, 基站需要针对新传包和重传包, 分别发送 PDCCH信息进行联 合调度。 如图 3所示, 子帧 E和 H需要接收新传包, 子帧 E^载着调度子帧 E和 H的 PDCCH信息; 子帧 F和 G需要接收重传包, 子帧 F承载着调度子帧 F和 G的 PDCCH信息。
由于 UE每个子帧对应的数据包需要对应单独的 HARQ进程号, 因此, 联 合调度子帧也需要根据 PDCCH信息中传输的 HA Q进程号信息获得相应的每 个子帧所对应的 HARQ进程号。 用户终端可以根据 PDCCH信息中承载的 HARQ进程号信息获知首个子帧所对应的 HARQ进程号,再根据时域资源指示 信息, 通过计算获得每个子帧所对应的 HARQ进程号。
本实施例提供了根据已有 DCI格式 1 A作改变而形成的新 DCI格式来承载 PDCCH信息, 但本实施例不仅限于此, 也可以釆用 LTE系统中任一标准 DCI 格式作改变形成的新 DCI格式来承载 PDCCH信息, 以保持与标准 DCI格式比 特相同。
本实施例实现了多子帧联合调度, 即通过一个子帧的 PDCCH信息可以通 知多个子帧的资源配置信息和传输配置信息, 具体地说, UE接收的一个子帧 的 PDCCH信息调度了多个子帧, 根据这一个子帧的 PDCCH信息, UE可以采 用相同的传输配置信息, 在多个子帧上接收下行数据, 这样减少了 PDCCH信 息所占的资源, 也即节省了控制信令占用的资源, 提高了频谱效率; 在一定 的网络资源条件下,增加了所调度子帧的个数,进而增加了可调度的 UE个数。 由于和标准 DCI格式所承载信息比特相同, 因此本实施例避免了增加 UE进行 PDCCH检测的复杂度。 这种多子帧调度方法也可以应用在上行数据传输过程 中。
图 4为本发明实施例三多子帧调度方法的流程图。本实施例以下行数据传 输过程中的多子帧调度为例进行描述, 如图 4所示, 本实施例具体包括如下步 骤:
步骤 301、 UE接收基站下发的包含时域指示信息和传输配置信息的 PDCCH信息,其中时域指示信息用于指示该 PDCCH信息调度的多个子帧的位 置;
步骤 302、 在 PDCCH信息调度的多个子帧上, 采用不同的传输配置信息 接收下行数据。
在步骤 301中, UE接收的 PDCCH信息采用了一种新 DCI格式进行承载, 该新 DCI格式与实施例二中新 DCI格式的区别在于, 这种新 DCI格式为每个子 帧设置了单独的传输配置域, 也就是说, 本实施例新 DCI格式中承载了每个 子帧不同的传输配置信息, 具体地, 新 DCI格式承载了每个子帧不同的调制 编码等级信息、 HARQ进程号信息、 新数据指示信息和冗余版本指示信息, 承载的每个子帧的功控命令字信息可以相同。
在小带宽系统 1.4MHz系统中釆用时域调度方式, 将以时隙或子帧为单位 将一个子帧的全部频域资源分配给单独一个 UE进行数据传输。
在步骤 301和 302之间, 本实施例也可以包括: UE根据 PDCCH信息的比
特数或 PDCCH信息中包含的 DCI格式区分信息, 确定 PDCCH信息采用的 DCI 格式; UE通过盲检测方法,获取 PDCCH信息中的时域资源指示信息和传输配 置信息。
需要说明的是, 本实施例在新 DCI格式中定义了时域资源指示域, 该时 域资源指示域承载的时域资源指示信息通过位图映射方式或其他映射方式来 指示 PDCCH信息所调度的子帧位置。 并且, PDCCH信息中包含每个可被调度 子帧的传输配置信息, 这些传输配置信息可以包括: 调制编码等级信息、 HARQ进程号信息、 新数据指示信息、 冗余版本指示信息、 功控命令字信息 等。 因此, 联合调度的多个子帧可以使用通过一个子帧的 PDCCH信息获得多 个子帧各不相同的传输配置信息, 增加了基站调度数据的灵活性, 通过更灵 活的资源配置, 增加了系统性能。 进一步的, 由于一个子帧的 PDCCH信息调 度的多个子帧分别具有单独的新数据包指示信息, 所以本实施例中, 承载新 传包和重传包的子帧可以通过一个子帧的 PDCCH信息实现调度。 这种多子帧 调度方法也可以应用在上行数据传输过程中。
图 5为本发明实施例终端的结构示意图。 如图 5所示, 本实施例具体包 括: 信息接收模块 11和数据收发模块 12, 其中, 信息接收模块 11接收基站 发送的包含时域资源指示信息的 PDCCH信息, 该时域资源指示信息用于指 示 PDCCH信息调度的多个子帧的信息;数据收发模块 12根据 PDCCH信息, 在 PDCCH信息调度的多个子帧上收发数据。
上述 PDCCH信息中还可以包含传输配置信息, 数据收发模块 12可以具体 用于在 PDCCH信息调度的多个子帧上, 釆用相同的传输配置信息收发数据, 也可以具体用于在 PDCCH信息调度的多个子帧上, 采用不同的传输配置信息 收发数据。
本实施例接收的包含时域指示信息的 PDCCH信息调度了多个子帧, 节省 了控制信令占用的资源;在一定的网絡资源条件下,增加了可调度的 UE个数。
图 6为本发明实施例基站的结构示意图。 如图 6所示 , 本实施例具体包括:
信息发送模块 21和数据收发模块 22, 其中, 信息发送模块 21发送包含时域资 源指示信息的 PDCCH信息,该时域资源指示信息用于指示 PDCCH信息调度的 多个子帧的信息; 数据收发模块 22在 PDCCH信息调度的多个子帧上收发数 据。
进一步的, 本实施例还可以包括配置模块 23 , 该配置模块 23用于按照新
DCI格式配置 PDCCH信息, 该新 DCI格式与 LTE系统中的标准 DCI格式承载的 信息比特负责相同。
本实施例发送的包含时域指示信息的 PDCCH信息调度了多个子帧, 节省 了控制信令占用的资源;在一定的网络资源条件下,增加了可调度的 UE个数。
图 7为本发明实施例多子帧调度系统的结构示意图。 如图 7所示, 本实施 例具体包括: 终端 31和基站 32 , 其中, 终端 31接收基站 32发送的包含时域资 源指示信息的 PDCCH信息,该时域资源指示信息用于指示 PDCCH信息调度的 多个子帧的信息; 并根据 PDCCH信息, 在 PDCCH信息调度的多个子帧上向基 站 32收发数据; 基站 32向终端 31发送 PDCCH信息和收发数据。
本实施例 UE接收基站发送的包含时域指示信息的 PDCCH信息调度了多 个子帧, 节省了控制信令占用的资源; 在一定的网络资源条件下, 增加了可 调度的 UE个数。
另外需要说明的是, 本发明实施例不仅可以适用于 LTE中 1.4Mhz小带宽 系统, 也可以适用于其他因控制信令资源受限而导致可调度 UE数受限的系统 中。
本领域普通技术人员可以理解: 实现上述方法实施例的全部或部分步骤 可以通过程序指令相关的硬件来完成, 前述的程序可以存储于一计算机可读 取存储介质中, 该程序在执行时, 执行包括上述方法实施例的步骤, 而前述 的存储介质包括: ROM、 RAM, 磁碟或者光盘等各种可以存储程序代码的介 质。
最后应说明的是: 以上实施例仅用以说明本发明实施例的技术方案, 而
非对其限制; 尽管参照前述实施例对本发明实施例进行了详细的说明, 本领 域的普通技术人员应当理解: 其依然可以对前述各实施例所记载的技术方案 进行修改, 或者对其中部分技术特征进行等同替换; 而这些修改或者替换, 并不使相应技术方案的本质脱离本发明实施例各实施例技术方案的精神和范
Claims
1、 一种多子帧调度方法, 其特征在于包括:
接收基站发送的包含时域资源指示信息的下行物理控制信道 PDCCH信 息; 所述时域资源指示信息用于指示所述 PDCCH信息调度的多个子帧的信 息;
根据所述 PDCCH信息,在所述 PDCCH信息调度的多个子帧上收发数据。
2、 根据权利要求 1 所述的多子帧调度方法, 其特征在于, 在所述接收 基站发送的包含时域资源指示信息的 PDCCH信息之前还包括: 所述基站按 照新下行控制信息格式配置所述 PDCCH信息, 所述新下行控制信息格式与 长期演进系统中的标准下行控制信息格式承载的信息比特负载相同。
3、 根据权利要求 2所述的多子帧调度方法, 其特征在于, 在所述新下 行控制信息格式中, 重用所述标准下行控制信息格式的频域资源指示域携带 所述时域资源指示信息。
4、 根据权利要求 3所述的多子帧调度方法, 其特征在于, 所述 PDCCH 信息调度的多个子帧的全部频域资源分配给接收所述 PDCCH信息的用户设 备。
5、 根据权利要求 1-4 任一所述的多子帧调度方法, 其特征在于, 在所 述接收基站发送的包含时域资源指示信息的 PDCCH信息之前还包括: 接收 通过高层信令或物理层信令传输的通知消息, 所述通知消息用于通知用户设 备启动多子帧调度的配置过程。
6、 根据权利要求 1-4 任一所述的多子帧调度方法, 其特征在于, 所述 时域资源指示信息用于指示所述 PDCCH信息调度的多个子帧的位置。
7、 根据权利要求 2、 3或 4任一权利要求所述的多子帧调度方法, 其特 征在于, 所述 PDCCH信息中还包含传输配置信息, 所述根据 PDCCH信息, 在所述 PDCCH信息调度的多个子帧上收发数据包括:在所述 PDCCH信息调 度的多个子帧上, 釆用相同的传输配置信息收发数据。
8、 根据权利要求 1所述的多子帧调度方法, 其特征在于, 所述 PDCCH 信息中还包含传输配置信息, 所述根据 PDCCH信息,在所述 PDCCH信息调 度的多个子帧上收发数据包括: 在所述 PDCCH信息调度的多个子帧上, 采 用不同的传输配置信息收发数据。
9、 一种终端, 其特征在于包括:
信息接收模块, 用于接收基站发送的包含时域资源指示信息的下行物理 控制信道 PDCCH信息;所述时域资源指示信息用于指示所述 PDCCH信息调 度的多个子帧的信息;
数据收发模块,用于根据所述 PDCCH信息,在所述 PDCCH信息调度的 多个子帧上收发数据。
10、 根据权利要求 9所述的终端, 其特征在于, 所述 PDCCH信息中 还包含传输配置信息, 所述数据收发模块具体用于在所述 PDCCH信息调度 的多个子帧上, 采用相同的传输配置信息收发数据。
11、 根据权利要求 9所述的终端, 其特征在于, 所述 PDCCH信息中 还包含传输配置信息, 所述数据收发模块具体用于在所述 PDCCH信息调度 的多个子帧上, 采用不同的传输配置信息收发数据。
12、 一种基站, 其特征在于包括:
信息发送模块, 用于发送包含时域资源指示信息的下行物理控制信道 PDCCH信息; 所述时域资源指示信息用于指示所述 PDCCH信息调度的多个 子帧的信息;
数据收发模块, 用于在所述 PDCCH信息调度的多个子帧上收发数据。
13、 根据权利要求 12所述的基站, 其特征在于还包括: 配置模块, 用于按照新下行控制信息格式配置所述 PDCCH信息, 所述新下行控制信息 格式与长期演进系统中的标准下行控制信息格式承载的信息比特负载相同。
14、 一种多子帧调度系统, 其特征在于包括:
终端, 用于接收基站发送的包含时域资源指示信息的下行物理控制信道
PDCCH信息; 并根据所述 PDCCH信息, 在所述 PDCCH信息调度的多个子 帧上向基站收发数据; 其中, 所述时域资源指示信息用于指示所述 PDCCH 信息调度的多个子帧的信息;
基站, 用于向终端发送所述 PDCCH信息和收发数据。
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Also Published As
| Publication number | Publication date |
|---|---|
| EP2434818A1 (en) | 2012-03-28 |
| CN101971681A (zh) | 2011-02-09 |
| US20120127938A1 (en) | 2012-05-24 |
| CN101971681B (zh) | 2014-12-10 |
| US8547928B2 (en) | 2013-10-01 |
| EP3595393B1 (en) | 2022-10-26 |
| EP3595393A1 (en) | 2020-01-15 |
| EP2434818A4 (en) | 2012-04-25 |
| EP2434818B1 (en) | 2019-05-01 |
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