WO2017000248A1 - 一种资源分配信息指示方法、基站及用户设备 - Google Patents

一种资源分配信息指示方法、基站及用户设备 Download PDF

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Publication number
WO2017000248A1
WO2017000248A1 PCT/CN2015/082886 CN2015082886W WO2017000248A1 WO 2017000248 A1 WO2017000248 A1 WO 2017000248A1 CN 2015082886 W CN2015082886 W CN 2015082886W WO 2017000248 A1 WO2017000248 A1 WO 2017000248A1
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Prior art keywords
substring
information
resource allocation
allocated
resource
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English (en)
French (fr)
Inventor
周凯捷
邓天乐
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN201580081194.5A priority Critical patent/CN107736065B/zh
Priority to PCT/CN2015/082886 priority patent/WO2017000248A1/zh
Priority to EP15896779.4A priority patent/EP3297353B1/en
Publication of WO2017000248A1 publication Critical patent/WO2017000248A1/zh
Priority to US15/846,996 priority patent/US10420092B2/en
Anticipated expiration legal-status Critical
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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • 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
    • H04W88/02—Terminal devices
    • 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 embodiments of the present invention relate to the field of wireless communications, and in particular, to a resource allocation information indication method base station and user equipment.
  • the uplink data transmission process in a long term evolution (LTE) system mainly includes the following steps: First, a user equipment (UE) sends a scheduling request (SR) message to a base station; subsequently, the base station sends a resource allocation. (scheduling grant, SG) information is sent to the UE; the UE transmits data on the resources allocated by the base station.
  • SR scheduling request
  • SG scheduling grant
  • the SG information is transmitted through downlink control information (DCI).
  • DCI downlink control information
  • the DCI generally includes a resource allocation indication (bitmap), a modulation and coding scheme, and other information.
  • bitmap resource allocation indication
  • the UE After receiving the DCI, the UE can obtain the allocated resource information through demodulation and the like.
  • the bitmap in the DCI sent by the base station to a certain UE is only used to indicate the resource allocation of the UE, and each bitmap needs to occupy a certain resource. As the number of UEs accessing the base station increases, all the bitmaps occupy. The overall resource is multiplied. When the number of UEs is too large, the system signaling overhead is too large.
  • the embodiment of the invention provides a resource allocation information indication method, a base station and a user equipment, which can reduce system signaling overhead.
  • the embodiment of the present invention provides a resource allocation information indication method, including: generating downlink control information, where the downlink control information includes common resource allocation indication information, where the common resource allocation indication information is used to indicate allocation to The resources of the multiple UEs, including the first UE, are sent downlink control information to the first UE, so that the first UE acquires information about the allocated resources according to the common resource allocation indication information.
  • the common resource allocation indication information includes a character string composed of a binary code, the character string includes a first substring, and the first substring is used to indicate a contiguous resource allocated to the first UE, wherein the first substring includes at least one consecutive bit representing a contiguous resource allocated to the first UE; the string further comprising at least one second sub-character a string, the at least one second substring is used to indicate a continuous resource allocated to at least one UE other than the first UE, where the second substring includes at least one consecutive bit indicating allocation to the A continuous resource of one of the at least one UE other than the first UE.
  • the first substring is a contiguous binary code 1 and the first substring
  • the adjacent second substring is a continuous binary code 0; or the first substring is a continuous binary code 0, and the second substring adjacent to the first substring is continuous Binary code 1.
  • the multiple second sub-characters includes a second substring consisting of consecutive binary codes 1 and a second substring consisting of consecutive binary codes 0.
  • the method further includes: performing cyclic redundancy check on the downlink control information by using the identifier information of the first UE The check code is scrambled, so that the first UE demodulates the downlink control information, and acquires a first sub-string corresponding to the first UE, so as to be allocated according to the first sub-string and the And mapping the continuous resources of the first UE, and acquiring information about the continuous resources allocated to the first UE.
  • the common resource allocation indication information is used to indicate resources allocated to multiple UEs including the first UE.
  • the common resource allocation indication information is used to indicate a resource block group allocated to the first UE, where the resource block group includes at least one resource block.
  • the method further includes determining a length of the common resource allocation indication information, including, Determining a length of the common resource allocation indication according to an overall resource size allocated to the multiple UEs and a number of resource blocks included in the resource block group, where the number of UEs indicated in the common resource allocation indication is The length of the common resource allocation indication is proportional.
  • the embodiment of the present invention provides a method for acquiring resource allocation information, including: receiving, by a UE, downlink control information, where the downlink control information includes common resource allocation indication information, where the common resource allocation indication information is used to indicate a base station Allocating resources to a plurality of UEs including the UE; the UE acquiring information of the allocated resources according to the common resource allocation indication.
  • the common resource allocation indication includes a character string composed of a binary code, the character string includes a first substring, and the first substring is used to indicate an allocation. a continuous resource to the UE, wherein the first substring includes at least one consecutive bit representing a contiguous resource allocated to the UE; the string further includes at least one second substring, the at least a second substring is used to indicate a continuous resource allocated to at least one UE other than the UE, wherein the second substring includes at least one consecutive bit indicating at least one other than the UE A continuous resource of one UE in the UE.
  • the first sub-string is a consecutive binary code 1 and the first sub-string
  • the adjacent second substring is a continuous binary code 0; or the first substring is a continuous binary code 0, and the second substring adjacent to the first substring is continuous Binary code 1.
  • the information that the UE acquires the allocated resource according to the common resource allocation indication includes: Determining, by the downlink control information, the first sub-string corresponding to the UE, to obtain the allocation to the UE according to a mapping relationship between the first sub-string and the continuous resource allocated to the UE The information of the continuous resources; wherein the cyclic redundancy check check code of the downlink control information is scrambled by the identification information of the UE.
  • an embodiment of the present invention provides a base station, where the base station includes
  • a generating unit configured to generate downlink control information, where the downlink control information includes common resource allocation indication information, where the common resource allocation indication information is used to indicate resources allocated to multiple UEs including the first UE,
  • a sending unit configured to send downlink control information to the user equipment UE, so that the first UE acquires information about the allocated resource according to the common resource allocation indication information.
  • the common resource allocation indication information includes a character string composed of a binary code, the character string includes a first substring, and the first substring is used to indicate a contiguous resource allocated to the first UE, wherein the first substring includes at least one consecutive bit representing a contiguous resource allocated to the first UE; the string further comprising at least one second sub-character a string, the at least one second substring is used to indicate a continuous resource allocated to at least one UE other than the first UE, where the second substring includes at least one consecutive bit indicating allocation to the A continuous resource of one of the at least one UE other than the first UE.
  • the first sub-string is a continuous binary code 1 and the first sub-string
  • the adjacent second substring is a continuous binary code 0; or the first substring is a continuous binary code 0, and the second substring adjacent to the first substring is continuous Binary code 1.
  • the multiple second sub-characters includes a second substring consisting of consecutive binary codes 1 and a second substring consisting of consecutive binary codes 0.
  • the generating unit is further configured to: use the identifier information of the first UE to rewrite the downlink control information
  • the first checksum is scrambled, so that the first UE demodulates the downlink control information, and acquires a first substring corresponding to the first UE, so that the child corresponding to the first UE is obtained.
  • the common resource allocation indication information is used to indicate resources allocated to multiple UEs including the first UE.
  • the common resource allocation indication information is used to indicate a resource block group allocated to the first UE, where the resource block group includes at least one resource block.
  • the generating unit is further configured to determine a length of the common resource allocation indication information, including, according to the allocation Determining, by the total resource size of the multiple UEs, the number of resource blocks included in the resource block group, the length of the common resource allocation indication, where the number of UEs indicated in the common resource allocation indication is The length of the public resource allocation indication is proportional.
  • the embodiment of the present invention provides a UE, including: a receiving unit, configured to receive downlink control information, where the downlink control information includes common resource allocation indication information, where the common resource allocation indication information is used to indicate allocation. And a processing unit, configured to acquire information about the allocated resource according to the common resource allocation indication.
  • the common resource allocation indication includes a character string composed of a binary code, the character string includes a first substring, and the first substring is used to indicate an allocation. a continuous resource to the UE, wherein the first substring includes at least one consecutive bit representing a contiguous resource allocated to the UE; the string further includes at least one second substring, the at least a second substring is used to indicate a continuous resource allocated to at least one UE other than the UE, wherein the second substring includes at least one consecutive bit indicating at least one other than the UE A continuous resource of one UE in the UE.
  • the first sub-string is a consecutive binary code 1 and the first sub-string
  • the adjacent second substring is a continuous binary code 0; or the first substring is a continuous binary code 0, and the second substring adjacent to the first substring is continuous Binary code 1.
  • the processing unit is specifically configured to: demodulate the downlink control information, and obtain the first corresponding to the UE Obtaining, according to a mapping relationship between the first substring and the continuous resource allocated to the UE, information about the continuous resource allocated to the UE; wherein, the downlink control information is The cyclic redundancy check check code is scrambled by the identification information of the UE.
  • the base station generates and sends the downlink control information, which is used by the base station, to the UE, where the public resource allocation indication information is used to indicate resources allocated to multiple UEs, and the UE according to the public resource.
  • the allocation indication information is used to obtain the information of the allocated resource, which reduces the amount of resources occupied by the resource allocation indication, thereby reducing the total DCI resource amount and saving the signaling overhead of the system.
  • the method is applied in the scenario of performing a short subframe service, which further reduces signaling overhead and improves system performance.
  • FIG. 1 is a schematic diagram of the architecture of a substation system
  • FIG. 2 is a schematic flowchart of a resource allocation information indication method according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of a method for acquiring resource allocation information according to an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of public resource allocation indication information according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic diagram of downlink common resource allocation indication information according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a UE according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of a chipset according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of a chipset according to an embodiment of the present invention.
  • the various techniques described herein may be used in a 4G communication system such as an LTE communication system; and a next generation communication system such as an LTE subsequent evolution system.
  • the base station according to the embodiment of the present invention may be an evolved Node B (eNB/e-NodeB, evolved NodeB) in the LTE communication system or a similar base station device in the LTE subsequently evolved communication system.
  • eNB/e-NodeB evolved NodeB
  • the UE involved in the present invention may include a handheld device having a wireless communication function, an in-vehicle device, a wearable device, a computing device, or other processing device connected to a wireless modem, and various forms of user equipment, a mobile station (mobile station, MS), terminal, terminal equipment, etc., may communicate with one or more core networks via a radio access network (RAN).
  • RAN radio access network
  • the embodiment of the present invention defines that the unidirectional communication link of the base station to the UE is a downlink, and the unidirectional communication link of the UE to the base station is an uplink.
  • the resources described in the embodiments of the present invention are transmission resources, including time domain resources and frequency domain resources, and can be used to carry data or signaling in an uplink communication process or a downlink communication process. That is, the resource in the embodiment of the present invention may be an uplink resource allocated by the base station to the UE, and used for the UE to send uplink data, or may be a downlink resource allocated by the base station to the UE, for the UE to receive downlink data.
  • MTC machine-to-machine communication
  • FIG. 1 is a schematic diagram of the architecture of a substation system. As shown in Figure 1, in the substation system, between the communication unit (CONT.) and the control unit (CONTR.) interface 3, the communication unit (CONTR.) and the control unit (CONTR.) interface 8 Communication between the communication, process interface and control unit (CONTR.) interface 5 requires a delay of less than 3 milliseconds. Other MTC applications such as intelligent traffic and monitoring in mine fields also require shorter communication delays.
  • a plurality of orthogonal frequency division multiplexing (OFDM) symbols may be used to form a short subframe to transmit a signal.
  • Order or data wherein the duration of the short subframe is less than 1 ms.
  • the minimum bearer unit of the physical layer data may be a resource element (RE), and one RE may be composed of one subcarrier on the frequency domain and one symbol on the time domain.
  • the base station may allocate transmission resources to the UE in the form of a resource block group (RBG), and each RBG includes at least one RB.
  • RBG resource block group
  • the base station can carry a bitmap in the DCI to inform the UE of its resource allocation.
  • the DCI is transmitted through a physical downlink common control channel (PDCCH).
  • PDCH physical downlink common control channel
  • the DCI is transmitted on a control channel element (CCE) in the PCCCH, and one CCE is formed by nine resource element groups (REGs), and each resource element group is formed by four REs.
  • the length of the DCI is different and the number of CCEs required is also different.
  • the eNB may select an appropriate PDCCH format according to the channel state of the UE and the length of the DCI. As shown in Table 1 As shown, the LTE system supports four PDCCH formats, and PDCCHs of different formats can carry DCIs of different lengths or carry different numbers of DCIs. For example, if the length of the DCI is less than 72 bits, it can be transmitted through PDCCH format 0. If the length of the DCI is greater than 72 but less than 144 bits, it can be transmitted through PDCCH format 1.
  • the bit number of the DCI is obtained by quadrature phase shift keying (QPSK) modulation and channel coding.
  • QPSK quadrature phase shift keying
  • the base station When multiple UEs access the base station at the same time, the base station sends multiple DCIs carrying different bitmaps to different UEs, and each UE receives one DCI, and each bitmap is used to indicate resource allocation of one UE, because each If the bitmap occupies a certain resource, the total resources occupied by multiple bitmaps will increase exponentially.
  • the downlink transmission resources provided by the base station are 50 RBs. Assuming that each RB is composed of one RBG, the length of each bitmap is 17 bits (50/3), and it is assumed that If there are 5 UEs accessing the base station, the length of all the bitmaps is 85 bits (17*5).
  • the message length is proportional to the number of resources occupied by the message, the overall resources occupied by all the bitmaps are increased, resulting in a system control signaling overhead. Big.
  • the data packets of the application are usually small, and only a few RBs are used for transmission. Therefore, the cost of each DCI is greater than the DCI used for the normal delay service, and the bitmap that occupies too many resources.
  • the system control signaling overhead is further increased.
  • FIG. 2 is a DCI transmission method according to an embodiment of the present invention, including steps S101-S102.
  • the method can be performed by a base station, such as by an eNB.
  • S101 Generate a DCI, where the DCI includes common resource allocation indication information, where the common resource allocation indication information is used to indicate resources allocated to multiple UEs including the first UE.
  • the resources allocated to the UE include time domain resources and frequency domain resources allocated to the UE, and the resources are It can be an uplink resource or a downlink resource.
  • the foregoing common resource allocation indication information may be used to indicate a resource block group allocated to multiple UEs, where the resource block group includes at least one resource block. That is, the base station may allocate the foregoing resources to the UE in the form of an RBG, or may be allocated by other forms, which is not specifically limited in this embodiment of the present invention.
  • the DCI received by each UE includes information such as common resource allocation indication information, modulation and coding scheme (MSC) information, and hybrid automatic repeat request (HARQ) process number.
  • the content of the common resource allocation indication information received by each UE is the same, that is, the common resource allocation indication information includes all the resource information of the UE served by the base station; and the information such as the MSC and the HARQ process ID is The content of such information received by the UE receiving the DCI, that is, each UE is different.
  • S102 Send a DCI to the first UE, so that the first UE acquires information about the allocated resource according to the common resource allocation indication information.
  • the information of the foregoing resource may include the number of resources allocated by the UE, such as the number of resource block groups, and the logical location of the resource.
  • the resource block group received by the UE is information such as the first resource block in the total resource.
  • the common resource allocation indication information includes a character string composed of a binary code, where the character string includes a first substring, where the first substring is used to indicate allocation to the first UE. a continuous resource, wherein the first substring includes at least one consecutive bit representing a contiguous resource allocated to the first UE; the string further includes at least one second substring, the at least one second substring a continuous resource for indicating at least one UE allocated to the first UE, wherein the second substring includes at least one consecutive bit indicating a contiguous one of the at least one UE allocated to the first UE Resources.
  • the first substring is a continuous binary code 1
  • the second substring adjacent to the first substring is a continuous binary code 0
  • the first substring is A continuous binary code of 0, and the second substring adjacent to the first substring is a continuous binary code 1.
  • the common resource allocation indication information includes a plurality of second substrings
  • the plurality of second substrings include a second substring consisting of consecutive binary codes 1 and a continuous binary The second substring consisting of code 0.
  • the character string in the above-described common resource allocation indication information may include a plurality of substrings including binary code 1 and substrings including binary code 0 arranged at intervals.
  • the conversion of the substring containing binary code 1 and the substring containing binary code 0 indicates that the corresponding resource is allocated to a different UE.
  • the base station can allocate resources to any one of the accessed UEs. Therefore, the foregoing first UE may be any UE that allocates resources by the base station, and does not represent a specific UE, and may not constitute any limitation on the present invention.
  • first sub-string and the second sub-string are named only for distinguishing the resources allocated to different UEs, and the order or the number of sub-strings cannot be limited.
  • first substring or the second substring corresponds to a logical continuous resource. That is, the first sub-string or the second sub-string may correspond to a physically contiguous resource, or may correspond to a physically discontinuous resource according to a mapping relationship, but whether it is a continuous resource or a discontinuous resource, Both may be represented by consecutive numbers, such as the first RBG, the second RBG, the Nth RBG (N is an integer, N>0).
  • the base station may use the identifier information of the UE to scramble the cyclic redundancy check (CRC) check code of the DCI, and the UE may demodulate the corresponding DCI. Acquiring the first sub-string corresponding to the UE, so as to obtain information about the continuous resource allocated to the first UE according to the mapping relationship between the first sub-string and the continuous resource allocated to the first UE.
  • CRC cyclic redundancy check
  • the foregoing method for acquiring the corresponding DCI according to the identifier information of the UE is applicable in the uplink resource allocation process or the downlink resource allocation process.
  • the mapping relationship between the public resource allocation indication information and the indicated resource may be any one of the mapping relationships, which is not limited in this embodiment of the present invention.
  • public resource allocation indication information can For indicating a virtual resource block (virtual RB, VRB), and the virtual resource block can represent a physical resource block (physical RB, PRB), the common resource allocation indication information can map the physical resource block.
  • the identifier information of the UE may be a radio network temporary identifier (RNTI), such as a cell radio network temporary identifier (C-RNTI), for identifying the UE on the common channel of the cell.
  • RNTI radio network temporary identifier
  • C-RNTI cell radio network temporary identifier
  • Each UE has a unique matching C-RNTI in one cell, which can be used to distinguish different UEs.
  • the C-RNTI may be added in the protocol data unit (PDU) header of the medium access control (MAC) layer.
  • PDU protocol data unit
  • MAC medium access control
  • Different UEs are distinguished as special identifiers.
  • the length of the C-RNTI is typically 16 bits.
  • the base station when the base station allocates resources to the UE in a resource block manner, the base station may determine the public according to the total resource size allocated to the multiple UEs and the number of resource blocks included in the resource block group.
  • the length of the resource allocation indication wherein the number of UEs indicated in the common resource allocation indication is proportional to the length of the common resource allocation indication.
  • the length of the common resource allocation indication information the number of downlink resources/the number of resources in the resource block group.
  • the downlink transmission resources are 50 RBs. If the eNB sends the resources in the RBG mode and each RBG includes 3 RBs, the length of the common resource allocation indication information is 50/3 ⁇ 17 bits.
  • the system bandwidth determines the maximum value of the UE accessing the base station. Taking the above system as an example, assuming that the base station allocates 2 RBGs for each UE, each UE can allocate 6 RBs, and the total number of UEs carried is 50/6 ⁇ 8.
  • the base station generates and sends a DCI including the common resource allocation indication information to the UE, where the common resource allocation indication information is used to indicate resources allocated to multiple UEs, and the UE according to the public resource.
  • the allocation indication information is used to obtain the information of the allocated resource, which reduces the amount of resources occupied by the resource allocation indication, thereby reducing the total DCI resource amount and saving the signaling overhead of the system.
  • the method is applied in the scenario of performing a short subframe service, which further reduces signaling overhead and improves system performance.
  • an embodiment of the present invention further provides a method for acquiring resource allocation information, including steps. Steps S201-S202:
  • the UE receives the DCI sent by the base station, where the DCI includes common resource allocation indication information, where the common resource allocation indication information is used to indicate resources allocated to multiple UEs including the UE.
  • S202 The UE acquires information about the allocated resource according to the public resource allocation indication.
  • the common resource allocation indication information includes a character string composed of a binary code, where the character string includes a first substring and at least one second substring, the first substring For indicating a continuous resource allocated to the UE, the at least one second substring is used to indicate a continuous resource allocated to at least one UE other than the UE.
  • the character string For a detailed description of the character string, reference may be made to the related content of the embodiment shown in FIG. 2, and details are not described herein.
  • the base station may send multiple DCIs to multiple UEs in a resource including the same time domain resource and continuous frequency domain resources, and the CRC check code of each DCI is scrambled by the identification information of the specific UE,
  • the UE may demodulate the corresponding DCI to obtain the content of the common resource allocation indication; and further determine the location and content of the first character string according to the correspondence between the number of the DCI and the first substring; The mapping relationship between the string and the indicated resource determines the information of the allocated resource.
  • the base station and the UE may agree on the number of the DCI according to a certain numbering rule, and the numbering rule may be a logical mapping method.
  • the numbers are numbered in the logical order of each DCI transmission, or they are numbered in the order of the physical locations of the resources indicated by each DCI.
  • the numbering rule is not particularly limited in the embodiment of the present invention.
  • the number may be directly added by the UE in the DCI, or calculated by the UE according to the information carried by the DCI.
  • the UE can find the matching first substring according to the number of the DCI, that is, determine the location of the first string in the common resource indication information, so as to obtain the corresponding resource. information.
  • the common resource allocation indication information is 11 bits in total, and the character string in the common resource allocation indication information includes 4 substrings, which are respectively "111", “00”, “111", “000”. , in the order in which they are listed as substring 1, substring 2, substring 3, and substring 4.
  • Each substring indicates the resources allocated to 4 different UEs, that is, each UE is assigned a group of resources.
  • each UE may demodulate the corresponding DCI according to the scrambling information of the DCI CRC, obtain the content of the common resource allocation indication information, and obtain the sub-character indicating the allocated RBG according to the correspondence between the DCI number and the sub-string.
  • the string and according to the mapping relationship between each string and the resource, can determine the assigned RBG. As shown in FIG.
  • UE1 allocates 3 RBGs
  • UE2 allocates 2 RBGs
  • UE3 allocates 3 RBGs
  • UE4 allocates 3 RBGs
  • UE1 identifies that the CRC of the DCI1 is scrambled by its own C-RNTI, that is, if the DCI1 is sent by the base station to the UE1, the UE1 may demodulate the DCI1 and obtain the common resource allocation indication information in the DCI. Since the substring 1 matches the number of the DCI1, the UE1 confirms that the consecutive RBGs corresponding to the substring 1 "111" are allocated to themselves, thereby acquiring the information of the first to third consecutive RBGs.
  • the base station can adjust the content of each character string in the common resource indication information and the indicated resource to ensure that each sub-string can indicate the resource allocation of the corresponding UE. For example, if the number of the DCI1-DCI4 is 4, 3, 2, 1, the common resource indication information may be adjusted to "00011100111" or "11100011000", and the substring 1 indicates the resource allocation of the UE4, and the substring 2 indicates Resource allocation of UE3...
  • UE1 matches sub-string 4 according to DCI number, and sub-string 4 indicates The resource is still allocated by the base station to UE1, which avoids the problem of indicating an error due to a change in the numbering rule.
  • the CRC check code of the downlink data is scrambled by the C-RNTI of the UE.
  • the UE first acquires the allocation manner of the RBG through the common resource allocation indication information, and then demodulates the data. Since the C-RNTI of the data is scrambled by the C-RNTI of the UE, the UE can only demodulate the data transmitted to itself. As shown in FIG. 5, UE1 knows that the 1-2 consecutive RBGs are allocated to one UE, and the 3-5th consecutive RBGs are allocated to another UE. Therefore, UE1 first demodulates the data on the 1-2 consecutive RBGs.
  • UE1 Since the CRC check code of these data is scrambled by the C-RNTI of UE1, UE1 can receive; similarly, on the 3-5th consecutive RBGs.
  • the data CRC check code is scrambled by the C-RNTI of UE2, and UE2 can demodulate and receive. It can be understood that UE1 does not need to demodulate data on other resources after determining the data allocated to itself.
  • the DCI sent by the base station to each UE may include only the common resource allocation indication information, and other information such as the MSC may be pre-configured in the UE.
  • the information such as the HARQ process ID may be omitted, and the overall length of the DCI is Shorten, further saving signaling overhead.
  • the method for acquiring the resource allocation information provided in this embodiment is the method of the receiving end corresponding to the embodiment shown in FIG. 2 to FIG. 3.
  • the method for a detailed description of the embodiment reference may be made to the related content of the embodiment shown in FIG. 2.
  • the UE receives the DCI that is sent by the base station and includes the common resource allocation indication information, where the common resource allocation indication information is used to indicate resources allocated to multiple UEs including the UE.
  • the UE obtains the information of the allocated resource according to the common resource allocation indication information, reduces the amount of resources occupied by the resource allocation indication, thereby reducing the total DCI resource amount, and saving the signaling overhead of the system.
  • the method is applied in the scenario of performing a short subframe service, which further reduces signaling overhead and improves system performance.
  • FIG. 6 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • the base station includes a generating unit 301 and a transmitting unit 302.
  • the generating unit 301 is configured to generate a DCI, where the DCI includes common resource allocation indication information, where the common resource allocation indication information is used to indicate resources allocated to multiple UEs including the first UE.
  • the sending unit 302 is configured to send a DCI to the first UE, so that the UE acquires information about the allocated resource according to the common resource allocation indication information.
  • the common resource allocation indication information includes a character string composed of a binary code, where the character string includes a first substring and at least one second substring, the first substring For indicating a continuous resource allocated to the UE, the at least one second substring is used to indicate a continuous resource allocated to at least one UE other than the UE.
  • the character string includes a first substring and at least one second substring, the first substring For indicating a continuous resource allocated to the UE, the at least one second substring is used to indicate a continuous resource allocated to at least one UE other than the UE.
  • the generating unit 301 is further configured to use the identifier information of the UE to scramble the CRC of the DCI.
  • the UE may demodulate the corresponding DCI to obtain the first sub-string corresponding to the UE, so as to obtain the allocation to the first UE according to the mapping relationship between the first sub-string and the continuous resource allocated to the first UE.
  • Information on continuous resources For a specific process of obtaining resource information, reference may be made to related descriptions of other embodiments of the present invention, and details are not described herein.
  • the generating unit 301 may be further configured to: according to the total resource size allocated to the multiple UEs and the resource block group The number of resource blocks is determined by the length of the common resource allocation indication, wherein the number of UEs indicated in the common resource allocation indication is proportional to the length of the common resource allocation indication.
  • the function of the generating unit 301 may be implemented by a processor.
  • the function of the transmitting unit 302 may be implemented by a transmitter.
  • the base station provided by the embodiment of the present invention generates and sends a DCI including the common resource allocation indication information to the UE, where the common resource allocation indication information is used to indicate the resources allocated to the multiple UEs, and the UE allocates the indication information according to the common resource.
  • the method is applied in the scenario of performing a short subframe service, which further reduces signaling overhead and improves system performance.
  • FIG. 7 is a schematic structural diagram of a UE according to an embodiment of the present invention.
  • the UE includes a receiving unit 401 and a processing unit 402.
  • the receiving unit 401 is configured to receive a DCI, where the DCI includes common resource allocation indication information, where the common resource allocation indication information is used to indicate resources allocated to multiple UEs including the UE.
  • the processing unit 402 is configured to obtain information about the allocated resource according to the common resource allocation indication.
  • the common resource allocation indication information includes a character string composed of a binary code, where the character string includes a first substring and at least one second substring, the first substring For indicating a continuous resource allocated to the UE, the at least one second substring is used to indicate a continuous resource allocated to at least one UE other than the UE.
  • the character string For a detailed description of the character string, reference may be made to the related content of the embodiment shown in FIG. 2, and details are not described herein.
  • the processing unit 402 is specifically configured to: demodulate the DCI, obtain a first substring corresponding to the UE, and allocate the UE to the UE according to the first substring.
  • the mapping relationship of the contiguous resources, the information of the contiguous resources allocated to the UE is obtained; wherein the CRC of the DCI is scrambled by the identification information of the UE.
  • the UE may demodulate the corresponding DCI to obtain the content of the common resource allocation indication; and further determine the location and content of the first character string according to the correspondence between the number of the DCI and the first substring;
  • the mapping relationship between a substring and the indicated resource determines the information of the allocated resource.
  • the receiving unit 401 when the receiving unit 401 receives the downlink data, the CRC check code of the downlink data is scrambled by the C-RNTI of the UE.
  • the CRC check code of the downlink data is scrambled by the C-RNTI of the UE.
  • the function of the receiving unit 401 may be implemented by a receiver.
  • the functions of the processing unit 402 may be implemented by a processor.
  • the UE provided by the embodiment of the present invention receives the DCI that includes the common resource allocation indication information that is sent by the base station, where the common resource allocation indication information is used to indicate resources allocated to multiple UEs, including the UE, according to the public.
  • the resource allocation indication information acquires the information of the allocated resource, reduces the amount of resources occupied by the resource allocation indication, thereby reducing the total DCI resource amount, and saving the signaling overhead of the system.
  • the method is applied in the scenario of performing a short subframe service, which further reduces signaling overhead and improves system performance.
  • an embodiment of the present invention further provides a chipset including a processor 501, a memory 502, a communication interface 503, and a system bus 504.
  • the processor 501, the memory 502, and the communication interface 503 are connected by the system bus 504 and complete communication with each other.
  • the processor 501 and the memory 502 can perform a resource allocation information indication method.
  • the memory 502 stores a set of program codes
  • the processor 501 is configured to call the program code stored in the memory 502 to perform the following operations: generating downlink control information, where the downlink control information includes common resource allocation indication information,
  • the common resource allocation indication information is used to indicate resources allocated to multiple UEs including the first UE, and send downlink control information to the first UE, so that the first UE acquires the allocation according to the common resource allocation indication information.
  • the common resource allocation indication information includes a character string composed of a binary code, where the character string includes a first substring and at least one second substring, the first substring For indicating a continuous resource allocated to the first UE, the at least one second substring is used to indicate a continuous resource allocated to at least one UE other than the first UE.
  • the character string includes a first substring and at least one second substring, the first substring For indicating a continuous resource allocated to the first UE, the at least one second substring is used to indicate a continuous resource allocated to at least one UE other than the first UE.
  • a set of program codes may also be stored in the memory 502, and the processor 501 is configured to call the program code stored in the memory 502 to perform the following operations: scrambling the CRC of the DCI by using the identification information of the UE. .
  • the UE may demodulate the corresponding DCI to obtain the first sub-string corresponding to the UE, so as to obtain the allocation to the first UE according to the mapping relationship between the first sub-string and the continuous resource allocated to the first UE.
  • Information on continuous resources For a specific process of obtaining resource information, reference may be made to related descriptions of other embodiments of the present invention, and details are not described herein.
  • a set of program codes may be stored in the memory 502, and the processor 501 is configured to call the program code stored in the memory 502 to perform the following operations: according to allocation to multiple UEs.
  • the total resource size and the number of resource blocks included in the resource block group determine the length of the common resource allocation indication, wherein the number of UEs indicated in the common resource allocation indication is proportional to the length of the common resource allocation indication.
  • the chipset can be installed in a base station or the like.
  • the chip set provided by the embodiment of the present invention generates and sends a DCI including the common resource allocation indication information to the UE, where the common resource allocation indication information is used to indicate resources allocated to multiple UEs, and the UE allocates indication information according to the common resource.
  • Obtaining the information of the allocated resources reduces the amount of resources occupied by the resource allocation indication, thereby reducing the overall DCI resource amount and saving the signaling overhead of the system.
  • the method is applied in the scenario of performing a short subframe service, which further reduces signaling overhead and improves system performance.
  • an embodiment of the present invention further provides a chipset including a processor 601, a memory 602, a communication interface 603, and a system bus 604.
  • the processor 601, the memory 602, and the communication interface 603 are connected by the system bus 604 and complete communication with each other.
  • the processor 601 and the memory 602 can perform a resource allocation information indication method.
  • the memory 502 stores a set of program codes
  • the processor 501 is configured to invoke the program code stored in the memory 502 to perform the following operations: receiving downlink control information, where the downlink control information includes common resource allocation indication information,
  • the common resource allocation indication information is used to indicate that the base station allocates resources to multiple UEs including the UE; and the UE acquires information about the allocated resources according to the common resource allocation indication.
  • the common resource allocation indication information includes a character string composed of a binary code, where the character string includes a first substring and at least one second substring, the first substring For indicating a continuous resource allocated to the first UE, the at least one second substring is used to indicate a continuous resource allocated to at least one UE other than the first UE.
  • the character string includes a first substring and at least one second substring, the first substring For indicating a continuous resource allocated to the first UE, the at least one second substring is used to indicate a continuous resource allocated to at least one UE other than the first UE.
  • the code is scrambled by the identification information of the UE.
  • the UE may demodulate the corresponding DCI to obtain the content of the common resource allocation indication; and further determine the location and content of the first character string according to the correspondence between the number of the DCI and the first substring;
  • the mapping relationship between a substring and the indicated resource determines the information of the allocated resource.
  • the CRC check code of the downlink data is scrambled by the C-RNTI of the UE.
  • the C-RNTI of the UE For the resource information acquisition process of the downlink data, reference may be made to the related content in FIG. 5, and details are not described herein.
  • the chipset can be installed in a UE or the like.
  • the chip set provided by the embodiment of the present invention receives the DCI that is sent by the base station and includes the common resource allocation indication information, where the common resource allocation indication information is used to indicate resources allocated to multiple UEs, including the UE, according to the UE.
  • the public resource allocation indication information acquires the information of the allocated resource, reduces the amount of resources occupied by the resource allocation indication, thereby reducing the total DCI resource amount, and saving the signaling overhead of the system.
  • the method is applied in the scenario of performing a short subframe service, which further reduces signaling overhead and improves system performance.
  • processor 501 or the processor 601 may be a CPU, or an AS I C, or one or more integrated circuits configured to implement the embodiments of the present invention.
  • the memory 502 or the memory 602 may include a volatile memory such as a RAM; the memory 502 may also include a non-volatile memory such as a ROM, a flash memory, an HDD or an SSD; the memory 502 or the memory 602 may also include the above-described categories a combination of memory.
  • a volatile memory such as a RAM
  • the memory 502 may also include a non-volatile memory such as a ROM, a flash memory, an HDD or an SSD
  • the memory 502 or the memory 602 may also include the above-described categories a combination of memory.
  • the communication interface 503 or 603 described above is for interacting with an external communication device, such as an air interface.
  • the embodiment of the present invention further provides a communication system, including the base station of the embodiment shown in FIG. 6 or the base station on which the chip set of the embodiment shown in FIG. 8 is installed, and the UE of the embodiment shown in FIG. 7 or the FIG. 9 is installed.
  • the base station and the UE can communicate through the air interface.
  • the base station can perform the resource allocation information indication method in the embodiment shown in FIG. 2, and the UE can perform the resource allocation information indication method in the embodiment shown in FIG.
  • the various embodiments provided by the present invention can be referred to each other.
  • the base station of the embodiment shown in FIG. 6 can perform the method of the embodiment shown in FIG. 2;
  • the UE of the embodiment shown in FIG. 7 can perform the process shown in FIG.
  • the two methods of the embodiment shown in FIG. 2 and FIG. 3 are corresponding technical solutions at both ends of the communication, and the execution subject is a corresponding two-side communication device.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the modules is only a logical function division.
  • there may be another division manner for example, multiple modules or components may be combined or Can be integrated into another device, or some features can be ignored or not executed.
  • each functional module in each embodiment of the present invention may be integrated into one processing module, and each module may exist physically separately, or two or more modules may be integrated into one module.

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Abstract

本发明实施例提供了一种资源分配信息指示方法、基站、用户设备及系统，采用本发明实施例的技术方案，通过基站生成并向UE发送包含公共资源分配指示信息的下行控制信息，该公共资源分配指示信息用于指示分配给多个UE的资源，UE根据该公共资源分配指示信息，获取分配到的资源的信息，减少了资源分配指示占用的资源量，从而减少整体DCI的资源量，节约了系统的信令开销。特别是在进行短子帧业务的场景下应用该方法，进一步降低了信令开销，提升了系统性能。

Description

一种资源分配信息指示方法、基站及用户设备 技术领域
本发明实施例涉及无线通信领域，特别涉及一种资源分配信息指示方法基站及用户设备。
背景技术
长期演进(long term evolution，LTE)系统中的上行数据传输过程主要包括如下步骤：首先，用户设备(user equipment，UE)发送调度请求(scheduling request，SR)消息给基站；随后，基站发送资源分配(scheduling grant，SG)信息给UE；UE在基站分配的资源上发送数据。
其中，SG信息通过下行控制信息(downlink control information，DCI)传递。DCI一般包括资源分配指示(bitmap)，调制编码方式，以及其他信息。UE收到DCI后，通过解调等处理就可以获取分配到的资源信息。
现有技术中，基站发送给某一个UE的DCI中的bitmap仅用于指示该UE的资源分配情况，而发送每个bitmap需要占用一定资源，随着接入基站的UE数量增加，所有bitmap占用的整体资源成倍增加，当UE数量过多时，会造成系统信令开销过大。
发明内容
本发明实施例提供了一种资源分配信息指示方法、基站及用户设备，可以减系统信令开销。
第一方面，本发明实施例提供了一种资源分配信息指示方法，包括，生成下行控制信息，所述下行控制信息中包含公共资源分配指示信息，所述公共资源分配指示信息用于指示分配给包括第一UE在内的多个UE的资源，向所述第一UE发送下行控制信息，以使得所述第一UE根据所述公共资源分配指示信息，获取分配到的资源的信息。
在第一方面的第一种可能的实施方式中，所述公共资源分配指示信息包含二进制码组成的字符串，所述字符串包含第一子字符串，所述第一子字符串用于指示分配给所述第一UE的连续资源，其中，所述第一子字符串包含的至少一个连续比特表示分配给所述第一UE的连续资源；所述字符串还包括至少一个第二子字符串，所述至少一个第二子字符串用于指示分配给所述第一UE之外的至少一个UE的连续资源，其中，所述第二子字符串包含的至少一个连续比特表示分配给所述第一UE之外的至少一个UE中的一个UE的连续资源。
结合第一方面的第一种可能的实施方式，在第一方面的第二种可能的实施方式中，所述第一子字符串为连续的二进制码1，且与所述第一子字符串相邻的第二子字符串为连续的二进制码0；或者所述第一子字符串为连续的二进制码0，且与所述第一子字符串相邻的第二子字符串为连续的二进制码1。
结合以上任意一种可能的实施方式，在第一方面的第三种可能的实施方式中，当所述公共资源分配信息指示包含多个第二子字符串时，所述多个第二子字符串包括间隔排列的由连续的二进制码1组成的第二子字符串以及由连续的二进制码0组成的第二子字符串。
结合以上任意一种可能的实施方式，在第一方面的第四种可能的实施方式中，所述方法还包括，使用所述第一UE的标识信息对所述下行控制信息的循环冗余校验校验码加扰，以使得所述第一UE解调所述下行控制信息，获取所述第一UE对应的第一子字符串，从而根据所述第一子字符串与所述分配给所述第一UE的连续资源的映射关系，获取所述分配给所述第一UE的连续资源的信息。
结合以上任意一种可能的实施方式，在第一方面的第五种可能的实施方式中，所述公共资源分配指示信息用于指示分配给包括所述第一UE在内的多个UE的资源包括，所述公共资源分配指示信息用于指示分配给所述第一UE的资源块组，所述资源块组中包含至少一个资源块。
结合第一方面的第五种可能的实施方式，在第一方面的第六种可能的实施方式中，所述方法还包括，确定所述公共资源分配指示信息的长度，包括，根 据分配给所述多个UE的总体资源大小和所述资源块组中包含的资源块数，确定所述公共资源分配指示的长度，其中，所述公共资源分配指示中指示的UE的数量与所述公共资源分配指示的长度成正比。
第二方面，本发明实施例提供了一种资源分配信息获取方法，包括，UE接收下行控制信息，所述下行控制信息中包含公共资源分配指示信息，所述公共资源分配指示信息用于指示基站分配给包括所述UE在内的多个UE的资源；所述UE根据所述公共资源分配指示，获取分配到的资源的信息。
在第二方面的第一种可能的实施方式中，所述公共资源分配指示包含二进制码组成的字符串，所述字符串包含第一子字符串，所述第一子字符串用于指示分配给所述UE的连续资源，其中，所述第一子字符串包含的至少一个连续比特表示分配给所述UE的连续资源；所述字符串还包括至少一个第二子字符串，所述至少一个第二子字符串用于指示分配给所述UE之外的至少一个UE的连续资源，其中，所述第二子字符串包含的至少一个连续比特表示分配给所述UE之外的至少一个UE中的一个UE的连续资源。
结合第二方面的第一种可能的实施方式，在第二方面的第二种可能的实施方式中，所述第一子字符串为连续的二进制码1，且与所述第一子字符串相邻的第二子字符串为连续的二进制码0；或者，所述第一子字符串为连续的二进制码0，且与所述第一子字符串相邻的第二子字符串为连续的二进制码1。
结合以上任意一种可能的实施方式，在第二方面的第三种可能的实施方式中，所述UE根据所述公共资源分配指示，获取分配到的资源的信息包括，所述UE解调所述下行控制信息，获取所述UE对应的第一子字符串，从而根据与所述第一子字符串与所述分配给所述UE的连续资源的映射关系，获取所述分配给所述UE的连续资源的信息；其中，所述下行控制信息的循环冗余校验校验码经过所述UE的标识信息加扰。
第三方面，本发明实施例提供了一种基站，所述基站包括，
生成单元，用于生成下行控制信息，所述下行控制信息中包含公共资源分配指示信息，所述公共资源分配指示信息用于指示分配给包括所述第一UE在内的多个UE的资源，
发送单元，用于向用户设备UE发送下行控制信息，以使得所述第一UE根据所述公共资源分配指示信息，获取分配到的资源的信息。
在第一方面的第一种可能的实现方式中，所述公共资源分配指示信息包含二进制码组成的字符串，所述字符串包含第一子字符串，所述第一子字符串用于指示分配给所述第一UE的连续资源，其中，所述第一子字符串包含的至少一个连续比特表示分配给所述第一UE的连续资源；所述字符串还包括至少一个第二子字符串，所述至少一个第二子字符串用于指示分配给所述第一UE之外的至少一个UE的连续资源，其中，所述第二子字符串包含的至少一个连续比特表示分配给所述第一UE之外的至少一个UE中的一个UE的连续资源。
结合第三方面的第一种可能的实施方式，在第三方面的第二种可能的实施方式中，所述第一子字符串为连续的二进制码1，且与所述第一子字符串相邻的第二子字符串为连续的二进制码0；或者，所述第一子字符串为连续的二进制码0，且与所述第一子字符串相邻的第二子字符串为连续的二进制码1。
结合以上任意一种可能的实施方式，在第三方面的第三种可能的实施方式中，当所述公共资源分配信息指示包含多个第二子字符串时，所述多个第二子字符串包括间隔排列的由连续的二进制码1组成的第二子字符串以及由连续的二进制码0组成的第二子字符串。
结合以上任意一种可能的实施方式，在第三方面的第四种可能的实施方式中，所述生成单元还用于，使用所述第一UE的标识信息对所述下行控制信息的循环冗余校验校验码加扰，以使得所述第一UE解调所述下行控制信息，获取所述第一UE对应的第一子字符串，从而根据与所述第一UE相对应的子字符串与上行资源的映射关系，获取分配给所述第一UE的上行资源的信息。
结合以上任意一种可能的实施方式，在第三方面的第五种可能的实施方式中，所述公共资源分配指示信息用于指示分配给包括所述第一UE在内的多个UE的资源包括，所述公共资源分配指示信息用于指示分配给所述第一UE的资源块组，所述资源块组中包含至少一个资源块。
结合第三方面的第五种可能的实施方式，在第三方面的第六种可能的实施方式中，所述生成单元还用于，确定所述公共资源分配指示信息的长度，包括，根据分配给所述多个UE的总资源大小以及所述资源块组中包含的资源块数，确定所述公共资源分配指示的长度，其中，所述公共资源分配指示中指示的UE的数量与所述公共资源分配指示的长度成正比。
第四方面，本发明实施例提供了一种UE，包括，接收单元，用于接收下行控制信息，所述下行控制信息中包含公共资源分配指示信息，所述公共资源分配指示信息用于指示分配给包括所述UE在内的多个UE的资源；处理单元，用于根据所述公共资源分配指示，获取分配到的资源的信息。
在第四方面的第一种可能的实施方式中，所述公共资源分配指示包含二进制码组成的字符串，所述字符串包含第一子字符串，所述第一子字符串用于指示分配给所述UE的连续资源，其中，所述第一子字符串包含的至少一个连续比特表示分配给所述UE的连续资源；所述字符串还包括至少一个第二子字符串，所述至少一个第二子字符串用于指示分配给所述UE之外的至少一个UE的连续资源，其中，所述第二子字符串包含的至少一个连续比特表示分配给所述UE之外的至少一个UE中的一个UE的连续资源。
结合第四方面的第一种可能的实施方式，在第四方面的第二种可能的实施方式中，所述第一子字符串为连续的二进制码1，且与所述第一子字符串相邻的第二子字符串为连续的二进制码0；或者，所述第一子字符串为连续的二进制码0，且与所述第一子字符串相邻的第二子字符串为连续的二进制码1。
结合以上任意一种可能的实施方式，在第四方面的第三种可能的实施方式中，所述处理单元具体用于，解调所述下行控制信息，获取所述UE对应的第一 子字符串；根据与所述第一子字符串与所述分配给所述UE的连续资源的映射关系，获取所述分配给所述UE的连续资源的信息；其中，所述下行控制信息的循环冗余校验校验码经过所述UE的标识信息加扰。
通过本发明实施例公开的技术方案，通过基站生成并向UE发送包含公共资源分配指示信息的下行控制信息，该公共资源分配指示信息用于指示分配给多个UE的资源，UE根据该公共资源分配指示信息，获取分配到的资源的信息，减少了资源分配指示占用的资源量，从而减少整体DCI的资源量，节约了系统的信令开销。特别是在进行短子帧业务的场景下应用该方法，进一步降低了信令开销，提升了系统性能。
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的前提下,还可以根据这些附图获得其他的附图。
图1为一种变电站系统的架构示意图；
图2为本发明实施例提供的一种资源分配信息指示方法的流程示意图；
图3为本发明实施例提供的一种资源分配信息获取方法的流程示意图；
图4为本发明实施例提供的一种公共资源分配指示信息的示意图；
图5为本发明实施例提供的一种下行公共资源分配指示信息的示意图；
图6为本发明实施例提供的一种基站的结构示意图；
图7为本发明实施例提供的一种UE的结构示意图；
图8为本发明实施例提供的一种芯片组的结构示意图；
图9为本发明实施例提供的一种芯片组的结构示意图.
具体实施方式
为使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明实施方式作进一步详细描述。
本文中描述的各种技术可用于LTE通信系统等4G通信系统；及LTE后续演进系统等下一代通信系统。
本发明实施例涉及的基站可以LTE通信系统中的演进型节点B(eNB/e-NodeB，evolved NodeB)或者LTE后续演进的通信系统中的类似基站设备。
本发明所涉及到的UE可以包括具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其它处理设备，以及各种形式的用户设备，移动台(mobile station,MS),终端(terminal)，终端设备(terminal equipment)等等，可以经无线接入网(radio access network，RAN)与一个或多个核心网进行通信。为方便描述，本申请中，简称为用户设备或UE。
本发明实施例定义基站到UE的单向通信链路为下行链路，而UE到基站的单向通信链路为上行链路。
本发明实施例中所述的资源即为传输资源，包括时域资源以及频域资源，可以用于在上行通信过程或者下行通信过程中承载数据或信令。即本发明实施例中所述的资源可以是基站为UE分配的上行资源，用于UE发送上行数据；也可以是基站为UE分配的下行资源，用于UE接收下行数据。
随着通信技术的发展，用户对数据传输速率的要求越来越高，通信方式也不再局限于人与人之间的通信，机器与机器之间的通信(machine type communication，MTC)变得日益普及。
图1是一种变电站系统的架构示意图。如图1所示，在该变电站系统中，保护单元(PROT.)与控制单元(CONTR.)接口3之间的通信、控制单元(CONTR.)与控制单元(CONTR.)接口8之间的通信、进程接口(process interface)与控制单元(CONTR.)接口5之间的通信都要求时延小于3毫秒。另外一些其他的MTC应用如智能交通、矿井油田中的监控也都需要较短的通信时延。
可以理解，上述MTC中各设备的通信过程与无线通信网络中UE与基站等网元之间的通信过程类似，因此，本发明实施例提供的技术方案适用于上述各种MTC应用场景。
本发明实施例将以LTE系统进行说明，本发明实施例提供的技术方案在其他通信系统或MTC中的应用与在LTE系统中类似，不再赘述。
为了满足短时延通信的要求，在LTE系统采用的时长为1ms的子帧的基础上，可以使用数个正交频分复用(orthogonal frequency division multiplexing，OFDM)符号组成短子帧来传输信令或数据，其中，短子帧的时长小于1ms。通过使用短子帧，发送端发送数据的时间变短，接收端调解数据的时间也变短，因而可以缩短整个数据传输时延。
在LTE系统中，物理层数据的最小承载单元可以是资源元素(resource element，RE)，一个RE可以由频域上的一个子载波和时域上的一个符号(symbol)组成。物理层数据的承载单元例如还可以包括资源块(resource block，RB)，一个RB可以占用多个连续的子载波的频域资源，且同时占用多个连续的符号的时域资源。即一个RB占用的总资源数(单位：RE)＝频域资源*时域资源。假设用3个OFDM符号组成一个短子帧，即该短子帧占用了3个符号的时域资源，若该短子帧对应的RB同时占用了12个子载波的频域资源，则总资源数为36RE。基站可以通过资源块组(resource block group，RBG)的形式向UE分配传输资源，每个RBG中包含至少一个RB。
基站可以在DCI中携带bitmap，以通知UE其资源分配情况。DCI通过物理层下行公共控制信道(physical downlink common control channel，PDCCH)传输。
具体地，DCI在PCCCH中的控制信道单元(control channel element，CCE)上传输，1个CCE由9个资源单元组(resource element group，REG)形成，每个资源单元组由4个RE形成。DCI的长度不同，所需的CCE数量也不同。eNB可以根据UE的信道状态以及DCI的长度，选择合适的PDCCH格式。如表1 所示，目前LTE系统支持4种PDCCH格式，不同格式的PDCCH可以承载不同长度的DCI，或者承载不同数量的DCI。例如，若DCI的长度小于72比特，则可以通过PDCCH格式0发送，若DCI的长度大于72，但小于144比特，则可以通过PDCCH格式1发送。其中，DCI的比特数是经过正交相移键控(quadrature phase shift keying，QPSK)调制和信道编码后得到的。
PDCCH格式 CCE数量 RE数量 DCI的比特数
0 1 36 72
1 2 72 144
2 4 144 288
3 8 288 576
表一
当同时有多个UE接入基站时，基站分别下发多个携带不同bitmap的DCI给不同的UE，每个UE接收一个DCI，每个bitmap用于指示一个UE的资源分配情况，由于每个bitmap占用一定资源，则多个bitmap占用的总体资源将成倍增长。以带宽为10兆赫(MHz)的LTE系统为例，基站提供的下行传输资源共50RB，假设每3个RB组成一个RBG，则每个bitmap的长度为17比特(50/3)，又假设同时有5个UE接入基站，则所有bitmap的长度为85比特(17*5)，由于消息长度与消息占用的资源数成正比，则所有bitmap占用的整体资源增加，导致系统控制信令开销较大。特别是在进行短时延业务时，应用的数据包通常比较小，一般仅使用数个RB传输，因此，每一条DCI的开销大于进行普通时延业务时使用的DCI，占用过多资源的bitmap则进一步加大了系统控制信令开销。
图2是本发明实施例提供的一种DCI传输方法，包括步骤S101-S102。该方法可以由基站执行，例如由eNB执行。
S101：生成DCI，该DCI中包含公共资源分配指示信息，所述公共资源分配指示信息用于指示分配给包括第一UE在内的多个UE的资源。
其中，分配给UE的资源包括分配给UE的时域资源及频域资源，该资源既 可以是上行资源也可以是下行资源。
可选地，上述公共资源分配指示信息可以用于指示分配给多个UE的资源块组，所述资源块组中包含至少一个资源块。即基站可以通过RBG的形式将上述资源分配给UE，也可以通过其他形式分配，本发明实施例对此不做特别限定。
具体地，每个UE接收到的DCI中包括公共资源分配指示信息、调制编码方案(Modulation and coding scheme，MSC)信息、混合自动重传请求(hybrid automatic repeat request，HARQ)进程号等信息。其中，每个UE接收到的公共资源分配指示信息的内容是相同的，即该公共资源分配指示信息中包含了所有由该基站提供服务的UE的资源信息；而MSC、HARQ进程号等信息是针对接收该DCI的UE设置的，即每个UE接收到的此类信息的内容不同。
S102：向第一UE发送DCI，以使得第一UE根据所述公共资源分配指示信息，获取分配到的资源的信息。
其中，上述资源的信息可以包括UE分配到的资源数，例如资源块组的数量，以及资源的逻辑位置，例如UE接收到的资源块组是总体资源中的第几个资源块等信息。
可选地，作为本发明的一个实施例，上述公共资源分配指示信息包含二进制码组成的字符串，该字符串包含第一子字符串，该第一子字符串用于指示分配给第一UE的连续资源，其中，所述第一子字符串包含的至少一个连续比特表示分配给第一UE的连续资源；该字符串还包括至少一个第二子字符串，该至少一个第二子字符串用于指示分配给第一UE之外的至少一个UE的连续资源，其中，该第二子字符串包含的至少一个连续比特表示分配给第一UE之外的至少一个UE中的一个UE的连续资源。
可选地，上述第一子字符串为连续的二进制码1，且与所述第一子字符串相邻的第二子字符串为连续的二进制码0；或者，上述第一子字符串为连续的二进制码0，且与所述第一子字符串相邻的第二子字符串为连续的二进制码1。
可选地，当公共资源分配指示信息包含多个第二子字符串时，该多个第二子字符串包括间隔排列的由连续的二进制码1组成的第二子字符串以及由连续的二进制码0组成的第二子字符串。
换言之，上述公共资源分配指示信息中的字符串可以包括间隔排列的多个包含二进制码1的子字符串以及包含二进制码0的子字符串。包含二进制码1的子字符串以及包含二进制码0的子字符串的转换表示对应的资源分配给不同的UE。
可以理解，基站可以为接入的任意一个UE分配资源，因此，上述第一UE可以是任意一个被该基站分配资源的UE，不代表特定的某个UE，不能构成对本发明的任何限制。
可以理解，上述第一子字符串和第二子字符串仅是为了区分是指示分配给不同UE的资源而命名，不能对子字符串的排列顺序或者个数造成限定。
需要注意的是，第一子字符串或者第二子字符串对应于逻辑上的连续资源。即，第一子字符串或者第二子字符串可对应于物理上连续的资源，也可以是按照映射关系，对应于物理上不连续的资源，但无论是连续的资源或不连续的资源，都可以采用连续的编号表示，例如第1个RBG，第2个RBG……第N个RBG(N为整数，N＞0)。
可选地，作为本发明的一个实施例，基站可以使用UE的标识信息对DCI的循环冗余校验(cyclic redundancy check，CRC)校验码进行加扰，则UE可以解调对应的DCI，获取UE对应的第一子字符串，从而根据第一子字符串与所述分配给第一UE的连续资源的映射关系，获取所述分配给第一UE的连续资源的信息。
可以理解，上述根据UE的标识信息获取对应DCI的方法在上行资源分配过程或者下行资源分配过程中均适用。
其中，公共资源分配指示信息与指示的资源的映射关系可以是任意一种映射关系，本发明实施例对此不做任何限定。例如，公共资源分配指示信息可以 用于指示虚拟资源块(virtual RB，VRB)，而虚拟资源块可以表征物理资源块(physical RB，PRB)，则公共资源分配指示信息可以映射物理资源块。
可选地，UE的标识信息可以是小区无线网络临时标识(cell radio network temporary identifier，C-RNTI)等无线网络临时标识(radio network temporary identifier，RNTI)，用于在小区公共信道上标识UE，每个UE在一个小区内有唯一匹配的C-RNTI，可以用于区分不同UE。具体地，当小区公共信道承载的是UE的专用逻辑信道的数据时，可以在媒体接入控制(medium access control，MAC)层的协议数据单元(protocol data unit，PDU)头部添加C-RNTI作为特殊标识来区分不同的UE。C-RNTI的长度一般为16比特。
可选地，作为本发明的另一个实施例，当基站以资源块方式为UE分配资源时，基站可以根据分配给多个UE的总体资源大小和资源块组中包含的资源块数，确定公共资源分配指示的长度，其中，公共资源分配指示中指示的UE的数量与公共资源分配指示的长度成正比。
具体地，公共资源分配指示信息的长度＝下行资源数/资源块组中的资源数。以10M带宽的LTE系统为例，下行传输资源共50RB，若基站以RBG的方式下发资源，且每个RBG包括3个RB，则公共资源分配指示信息的长度为50/3≈17比特。同时，系统带宽决定了接入基站的UE的最大值。仍以上述系统为例，假设基站为每个UE分配2个RBG，则每个UE能分配到6个RB，总共承载的UE数量为50/6≈8个。
采用本发明实施例提供的资源分配信息指示方法，基站生成并向UE发送包含公共资源分配指示信息的DCI，该公共资源分配指示信息用于指示分配给多个UE的资源，UE根据该公共资源分配指示信息，获取分配到的资源的信息，减少了资源分配指示占用的资源量，从而减少整体DCI的资源量，节约了系统的信令开销。特别是在进行短子帧业务的场景下应用该方法，进一步降低了信令开销，提升了系统性能。
如图3所示，本发明实施例还提供了一种资源分配信息获取方法，包括步 骤S201-S202：
S201：UE接收基站发送的DCI，所述DCI中包含公共资源分配指示信息，所述公共资源分配指示信息用于指示分配给包括所述UE在内的多个UE的资源；
S202：UE根据所述公共资源分配指示，获取分配到的资源的信息。
可选地，作为本发明的一个实施例，上述公共资源分配指示信息包含二进制码组成的字符串，该字符串包含第一子字符串和至少一个第二子字符串，该第一子字符串用于指示分配给所述UE的连续资源，该至少一个第二子字符串用于指示分配给所述UE之外的至少一个UE的连续资源。关于该字符串的具体描述可以参照图2所示实施例的相关内容，在此不做赘述。
可选地，作为本发明的一个实施例，UE根据所述公共资源分配指示，获取分配到的资源的信息包括，UE解调DCI，获取该UE对应的第一子字符串，从而根据与该第一子字符串与分配给所述UE的连续资源的映射关系，获取分配给该UE的连续资源的信息；其中，所述DCI的CRC校验码经过该UE的标识信息加扰。
具体地，基站可以在一段包括相同的时域资源以及连续的频域资源的资源中可以发送多个DCI给多个UE，每个DCI的CRC校验码由特定UE的标识信息加扰，则UE可以解调对应的DCI，获取公共资源分配指示的内容；再根据该DCI的编号与第一子字符串之间的对应关系，确定第一字符串的位置和内容；从而根据第一子字符串与指示的资源的映射关系，确定分配到的资源的信息。
其中，基站与UE可以按照一定的编号规则约定DCI的编号，该编号规则可以是一种逻辑映射方法。例如，按照各DCI发送的逻辑顺序进行编号，或者按照各DCI指示的资源的物理位置的顺序进行编号。本发明实施例对编号规则不做特别限定。
可选地，该编号可以直接添加在DCI中由UE获取，或者由UE根据DCI携带的信息计算得出。
由于公共资源指示信息中的子字符串有排列顺序，UE可以根据DCI的编号找到匹配的第一子字符串，即确定第一字符串在公共资源指示信息中的位置，从而获取对应的资源的信息。
以一个具体的公共资源分配指示信息为例说明。如图4所示，该公共资源分配指示信息共11比特，该公共资源分配指示信息中的字符串共包含4个子字符串，分别是“111”，“00”，“111”，“000”，按其排列顺序记为子字符串1，子字符串2，子字符串3和子字符串4。每个子字符串分别指示了分配给4个不同UE的资源，即每个UE分配到了一组资源。
假设此处的4个不同UE为UE1，UE2，UE3和UE4，基站向上述UE1-UE4发送的DCI分别是DCI1，DCI2，DCI3和DCI4，假设该4个DCI的编号为1，2，3，4，资源以RBG的方式分配。则各个UE可以根据DCI的CRC校验码的加扰信息，解调对应的DCI，获取公共资源分配指示信息的内容，根据DCI编号和子字符串的对应关系，获取指示分配到的RBG的子字符串，并根据各字符串与资源的映射关系，就可以确定分配到的RBG。如图4所示，UE1分配到3个RBG，UE2分配到2个RBG，UE3分配到3个RBG，UE4分配到3个RBG，且能获取对应RBG的逻辑位置。以UE1为例，UE1识别DCI1的CRC校验码经过自身的C-RNTI加扰，即识别DCI1是基站发给UE1的，则UE1可以解调DCI1，获取该DCI中的公共资源分配指示信息，由于子字符串1与DCI1的编号匹配，UE1确认子字符串1“111”对应的连续RBG是分配给自己的，从而获取第1至第3个连续RBG的信息。
可以理解，若编号规则不同，基站可以相应调整公共资源指示信息中的各字符串的内容及指示的资源，以保证各个子字符串可以指示对应的UE的资源分配情况。例如，上述DCI1-DCI4的编号为4，3，2，1，则公共资源指示信息可以调整为“00011100111”或者“11100011000”，且子字符串1指示UE4的资源分配情况，子字符串2指示UE3的资源分配情况……假设DCI1仍然是发送给UE1的，则UE1根据DCI编号匹配得到的是子字符串4，而子字符串4指示 的资源仍然是基站分配给UE1的，避免了因为编号规则的变化而发生指示错误的问题。
可选地，在本发明的另一个实施例中，当UE接收下行数据时，下行数据的CRC校验码由UE的C-RNTI加扰。UE首先通过公共资源分配指示信息获取RBG的分配方式，然后再解调数据。由于数据的C-RNTI是由UE的C-RNTI加扰，UE只能解调发送给自己的数据。如在图5中，UE1知道第1-2个连续RBG是分配给一个UE的，第3-5个连续RBG是分给另外一个UE的。所以UE1先解调第1-2个连续RBG上的数据，由于这些数据的CRC校验码是由UE1的C-RNTI加扰，因此UE1可以接收；类似地，第3-5个连续RBG上的数据CRC校验码由UE2的C-RNTI加扰，UE2可以解调并接收。可以理解，UE1在确定分配给自己的数据之后，无需再解调其他资源上的数据。
在该实施例中，基站向各UE发送的DCI中可以仅包含公共资源分配指示信息，其他信息例如MSC等信息可以预先配置于UE中，例如HARQ进程号等信息可以省略，则DCI的整体长度缩短，进一步节约信令开销。
本实施例提供的资源分配信息获取方法是与图2-图3所示实施例对应的接收端的方法，关于该实施例的详细描述可以参照图2所示实施例的相关内容。
采用本发明实施例提供的资源分配信息获取方法，UE接收基站发送的包含公共资源分配指示信息的DCI，该公共资源分配指示信息用于指示分配给包括该UE在内的多个UE的资源，UE根据该公共资源分配指示信息，获取分配到的资源的信息，减少了资源分配指示占用的资源量，从而减少整体DCI的资源量，节约了系统的信令开销。特别是在进行短子帧业务的场景下应用该方法，进一步降低了信令开销，提升了系统性能。
图6是本发明实施例提供的一种基站的结构示意图。
如图6所示，该基站包括生成单元301，发送单元302。
生成单元301，用于生成DCI，该DCI中包含公共资源分配指示信息，该公共资源分配指示信息用于指示分配给包括第一UE在内的多个UE的资源。
发送单元302，用于向第一UE发送DCI，以使得该UE根据所述公共资源分配指示信息，获取分配到的资源的信息。
可选地，作为本发明的一个实施例，上述公共资源分配指示信息包含二进制码组成的字符串，该字符串包含第一子字符串和至少一个第二子字符串，该第一子字符串用于指示分配给所述UE的连续资源，该至少一个第二子字符串用于指示分配给所述UE之外的至少一个UE的连续资源。关于该字符串的具体描述可以参照本发明其他实施例的相关内容，在此不做赘述。
可选地，生成单元301还可以用于，使用UE的标识信息对DCI的CRC校验码进行加扰。则UE可以解调对应的DCI，获取UE对应的第一子字符串，从而根据第一子字符串与所述分配给第一UE的连续资源的映射关系，获取所述分配给第一UE的连续资源的信息。具体的获取资源信息的过程可以参照本发明其他实施例的相关描述，在此不做赘述。
可选地，作为本发明的另一个实施例，当基站以资源块方式为UE分配资源时，生成单元301还可以用于，根据分配给多个UE的总体资源大小和资源块组中包含的资源块数，确定公共资源分配指示的长度，其中，公共资源分配指示中指示的UE的数量与公共资源分配指示的长度成正比。具体的确定过程可以参照本发明其他实施例的相关描述，在此不做赘述。
可选地，作为本发明的另一个实施例，生成单元301的功能可以由处理器实现。
可选地，作为本发明的另一个实施例，发送单元302的功能可以由发送器实现。
采用本发明实施例提供的基站，通过生成并向UE发送包含公共资源分配指示信息的DCI，该公共资源分配指示信息用于指示分配给多个UE的资源，UE根据该公共资源分配指示信息，获取分配到的资源的信息，减少了资源分配指 示占用的资源量，从而减少整体DCI的资源量，节约了系统的信令开销。特别是在进行短子帧业务的场景下应用该方法，进一步降低了信令开销，提升了系统性能。
图7是本发明实施例提供的一种UE的结构示意图。
如图7所示，该UE包括接收单元401，处理单元402。
接收单元401，用于接收DCI，该DCI中包含公共资源分配指示信息，该公共资源分配指示信息用于指示分配给包括所述UE在内的多个UE的资源。
处理单元402，用于根据所述公共资源分配指示，获取分配到的资源的信息。
可选地，作为本发明的一个实施例，上述公共资源分配指示信息包含二进制码组成的字符串，该字符串包含第一子字符串和至少一个第二子字符串，该第一子字符串用于指示分配给所述UE的连续资源，该至少一个第二子字符串用于指示分配给所述UE之外的至少一个UE的连续资源。关于该字符串的具体描述可以参照图2所示实施例的相关内容，在此不做赘述。
可选地，作为本发明的一个实施例，处理单元402具体用于，解调上述DCI，获取该UE对应的第一子字符串，从而根据与该第一子字符串与分配给所述UE的连续资源的映射关系，获取分配给该UE的连续资源的信息；其中，所述DCI的CRC校验码经过该UE的标识信息加扰。
具体地，UE可以解调对应的DCI，获取公共资源分配指示的内容；再根据该DCI的编号与第一子字符串之间的对应关系，确定第一字符串的位置和内容；从而根据第一子字符串与指示的资源的映射关系，确定分配到的资源的信息。关于DCI的编号与第一子字符串之间的对应关系、以及UE如何确定分配到的资源的信息的具体描述可以参照本发明的其他实施例，例如图4相关的内容，在此不做赘述。
可选地，在本发明的另一个实施例中，当接收单元401接收下行数据时，下行数据的CRC校验码由UE的C-RNTI加扰。关于下行数据的资源信息获取过程可以参照图5相关的内容，在此不做赘述。
可选地，作为本发明的另一个实施例，接收单元401的功能可以由接收器实现。
可选地，作为本发明的另一个实施例，处理单元402的功能可以由处理器实现。
采用本发明实施例提供的UE，通过接收基站发送的包含公共资源分配指示信息的DCI，该公共资源分配指示信息用于指示分配给包括该UE在内的多个UE的资源，UE根据该公共资源分配指示信息，获取分配到的资源的信息，减少了资源分配指示占用的资源量，从而减少整体DCI的资源量，节约了系统的信令开销。特别是在进行短子帧业务的场景下应用该方法，进一步降低了信令开销，提升了系统性能。
如图6所示，本发明实施例还提供了一种芯片组，该芯片组包括处理器501、存储器502、通信接口503、以及系统总线504。所述处理器501、所述存储器502以及通信接口503之间通过所述系统总线504连接并完成相互间的通信。
当该芯片组工作时，所述处理器501和所述存储器502可以执行一种资源分配信息指示方法。具体包括：存储器502中存储一组程序代码，且处理器501用于调用存储器502中存储的程序代码，以执行以下操作：生成下行控制信息，所述下行控制信息中包含公共资源分配指示信息，所述公共资源分配指示信息用于指示分配给包括第一UE在内的多个UE的资源，向第一UE发送下行控制信息，以使得第一UE根据所述公共资源分配指示信息，获取分配到的资源的信息。
可选地，作为本发明的一个实施例，上述公共资源分配指示信息包含二进制码组成的字符串，该字符串包含第一子字符串和至少一个第二子字符串，该第一子字符串用于指示分配给第一UE的连续资源，该至少一个第二子字符串用于指示分配给第一UE之外的至少一个UE的连续资源。关于该字符串的具体描述可以参照本发明其他实施例的相关内容，在此不做赘述。
可选地，存储器502中还可以存储一组程序代码，且处理器501用于调用存储器502中存储的程序代码，以执行以下操作：使用UE的标识信息对DCI的CRC校验码进行加扰。则UE可以解调对应的DCI，获取UE对应的第一子字符串，从而根据第一子字符串与所述分配给第一UE的连续资源的映射关系，获取所述分配给第一UE的连续资源的信息。具体的获取资源信息的过程可以参照本发明其他实施例的相关描述，在此不做赘述。
可选地，作为本发明的另一个实施例，存储器502中还可以存储一组程序代码，且处理器501用于调用存储器502中存储的程序代码，以执行以下操作：根据分配给多个UE的总体资源大小和资源块组中包含的资源块数，确定公共资源分配指示的长度，其中，公共资源分配指示中指示的UE的数量与公共资源分配指示的长度成正比。具体的确定过程可以参照本发明其他实施例的相关描述，在此不做赘述。
可以理解，该芯片组可以安装在基站或类似设备中。
采用本发明实施例提供的芯片组，生成并向UE发送包含公共资源分配指示信息的DCI，该公共资源分配指示信息用于指示分配给多个UE的资源，UE根据该公共资源分配指示信息，获取分配到的资源的信息，减少了资源分配指示占用的资源量，从而减少整体DCI的资源量，节约了系统的信令开销。特别是在进行短子帧业务的场景下应用该方法，进一步降低了信令开销，提升了系统性能。
如图7所示，本发明实施例还提供了一种芯片组，该芯片组包括处理器601、存储器602、通信接口603、以及系统总线604。所述处理器601、所述存储器602以及通信接口603之间通过所述系统总线604连接并完成相互间的通信。
当该芯片组工作时，所述处理器601和所述存储器602可以执行一种资源分配信息指示方法。具体包括：存储器502中存储一组程序代码，且处理器501用于调用存储器502中存储的程序代码，以执行以下操作：接收下行控制信息，所述下行控制信息中包含公共资源分配指示信息，所述公共资源分配指示信息用于指示基站分配给包括所述UE在内的多个UE的资源；所述UE根据所述公共资源分配指示，获取分配到的资源的信息。
可选地，作为本发明的一个实施例，上述公共资源分配指示信息包含二进制码组成的字符串，该字符串包含第一子字符串和至少一个第二子字符串，该第一子字符串用于指示分配给第一UE的连续资源，该至少一个第二子字符串用于指示分配给第一UE之外的至少一个UE的连续资源。关于该字符串的具体描述可以参照本发明其他实施例的相关内容，在此不做赘述。
进一步地，所述UE根据所述公共资源分配指示，获取分配到的资源的信息包括，所述UE解调所述下行控制信息，获取所述UE对应的第一子字符串，从而根据与所述第一子字符串与所述分配给所述UE的连续资源的映射关系，获取所述分配给所述UE的连续资源的信息；其中，所述下行控制信息的循环冗余校验校验码经过所述UE的标识信息加扰。
具体地，UE可以解调对应的DCI，获取公共资源分配指示的内容；再根据该DCI的编号与第一子字符串之间的对应关系，确定第一字符串的位置和内容；从而根据第一子字符串与指示的资源的映射关系，确定分配到的资源的信息。关于DCI的编号与第一子字符串之间的对应关系、以及UE如何确定分配到的资源的信息的具体描述可以参照本发明的其他实施例，例如图4相关的内容，在此不做赘述。
可选地，在本发明的另一个实施例中，当接收下行数据时，下行数据的CRC校验码由UE的C-RNTI加扰。关于下行数据的资源信息获取过程可以参照图5相关的内容，在此不做赘述。
可以理解，该芯片组可以安装在UE或类似设备中。
采用本发明实施例提供的芯片组，通过接收基站发送的包含公共资源分配指示信息的DCI，该公共资源分配指示信息用于指示分配给包括该UE在内的多个UE的资源，UE根据该公共资源分配指示信息，获取分配到的资源的信息，减少了资源分配指示占用的资源量，从而减少整体DCI的资源量，节约了系统的信令开销。特别是在进行短子帧业务的场景下应用该方法，进一步降低了信令开销，提升了系统性能。
可以理解，上述处理器501或处理器601，可以是一个CPU，或者是AS I C，或者是被配置成实施本发明实施例的一个或多个集成电路。
上述存储器502或存储器602可以包括易失性存储器，例如RAM；所述存储器502也可以包括非易失性存储器，例如ROM，快闪存储器，HDD或SSD；存储器502或存储器602还可以包括上述种类的存储器的组合。
上述通信接口503或603用于与外部通信设备进行交互，例如可以是空中接口。
本发明实施例还提供了一种通信系统，包括图6所示实施例的基站或安装了图8所示实施例芯片组的基站，以及图7所示实施例的UE或安装了图9所示实施例芯片组的UE，基站和UE之间可以通过空口进行通信。其中，基站可以执行图2所示实施例的资源分配信息指示方法，UE可以执行图3所示实施例的资源分配信息指示方法。具体内容可以参照本发明其他实施例的相关描述，在此不做赘述。
可以理解，本发明提供的各个实施例可以互为参照，例如，图6所示实施例的基站可以执行图2所示实施例的方法；图7所示实施例的UE可以执行图3所示实施例的方法，图2及图3所示实施例的两侧方法为通信两端的对应技术方案，执行主体为对应的两侧通信设备。
可以理解，本发明实施例中出现的“第一”、“第二”等词语仅用于区分不同的说明对象，不代表说明对象的执行顺序或者优劣，不能构成对本发明实施例的任何限定。
可以理解，本发明实施例中出现的多个是指两个或者两个以上。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的设备和模块的具体工作过程，可以参考前述方法实施例中的对应过程描述。
在本申请所提供的几个实施例中，应该理解到，所揭露的设备和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述模块的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个模块或组件可以结合或者可以集成到另一个设备中，或一些特征可以忽略，或不执行。
另外，在本发明各个实施例中的各功能模块可以集成在一个处理模块中，可以是各个模块单独物理存在，也可以两个或两个以上模块集成在一个模块中。
本领域普通技术人员可以理解实施上述实施例的全部或部分步骤可以通过硬件来完成，也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。
最后需要说明的是：以上所述仅为本发明的较佳实施例，并不用于限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (22)

  1. 一种资源分配信息指示方法，其特征在于，
    生成下行控制信息，所述下行控制信息中包含公共资源分配指示信息，所述公共资源分配指示信息用于指示分配给包括第一用户设备UE在内的多个UE的资源；
    向所述第一UE发送下行控制信息，以使得所述第一UE根据所述公共资源分配指示信息，获取分配到的资源的信息。
  2. 根据权利要求1所述的方法，其特征在于，
    所述公共资源分配指示信息包含二进制码组成的字符串，
    所述字符串包含第一子字符串，所述第一子字符串用于指示分配给所述第一UE的连续资源，其中，所述第一子字符串包含的至少一个连续比特表示分配给所述第一UE的连续资源；
    所述字符串还包括至少一个第二子字符串，所述至少一个第二子字符串用于指示分配给所述第一UE之外的至少一个UE的连续资源，其中，所述第二子字符串包含的至少一个连续比特表示分配给所述第一UE之外的至少一个UE中的一个UE的连续资源。
  3. 根据权利要求2所述的方法，其特征在于，
    所述第一子字符串为连续的二进制码1，且与所述第一子字符串相邻的第二子字符串为连续的二进制码0；或者
    所述第一子字符串为连续的二进制码0，且与所述第一子字符串相邻的第二子字符串为连续的二进制码1。
  4. 根据权利要求2或3所述的方法，其特征在于，当所述公共资源分配信息指示包含多个第二子字符串时，
    所述多个第二子字符串包括间隔排列的由连续的二进制码1组成的第二子字符串以及由连续的二进制码0组成的第二子字符串。
  5. 根据权利要求2-4任一所述的方法，其特征在于，所述方法还包括，
    使用所述第一UE的标识信息对所述下行控制信息的循环冗余校验校验码加扰，以使得所述第一UE解调所述下行控制信息，获取所述第一UE对应的第一子字符串，从而根据所述第一子字符串与所述分配给所述第一UE的连续资源的映射关系，获取所述分配给所述第一UE的连续资源的信息。
  6. 根据权利要求1-5任一所述的方法，其特征在于，所述公共资源分配指示信息用于指示分配给包括所述第一UE在内的多个UE的资源，包括，
    所述公共资源分配指示信息用于指示分配给所述第一UE的资源块组，所述资源块组中包含至少一个资源块。
  7. 根据权利要求6所述的方法，其特征在于，所述方法还包括，确定所述公共资源分配指示信息的长度，包括，
    根据分配给所述多个UE的总体资源大小和所述资源块组中包含的资源块数，确定所述公共资源分配指示的长度，其中，所述公共资源分配指示中指示的UE的数量与所述公共资源分配指示的长度成正比。
  8. 一种资源分配信息获取方法，其特征在于，
    用户设备UE接收下行控制信息，所述下行控制信息中包含公共资源分配指示信息，所述公共资源分配指示信息用于指示基站分配给包括所述UE在内的多个UE的资源；
    所述UE根据所述公共资源分配指示信息，获取分配到的资源的信息。
  9. 根据权利要求8所述的方法，其特征在于，
    所述公共资源分配指示包含二进制码组成的字符串，
    所述字符串包含第一子字符串，所述第一子字符串用于指示分配给所述UE的连续资源，其中，所述第一子字符串包含的至少一个连续比特表示分配给所述UE的连续资源；
    所述字符串还包括至少一个第二子字符串，所述至少一个第二子字符串用于指示分配给所述UE之外的至少一个UE的连续资源，其中，所述第二子字符 串包含的至少一个连续比特表示分配给所述UE之外的至少一个UE中的一个UE的连续资源。
  10. 根据权利要求8所述的方法，其特征在于，
    所述第一子字符串为连续的二进制码1，且与所述第一子字符串相邻的第二子字符串为连续的二进制码0；或者
    所述第一子字符串为连续的二进制码0，且与所述第一子字符串相邻的第二子字符串为连续的二进制码1。
  11. 根据权利要求9或10所述的方法，其特征在于，所述UE根据所述公共资源分配指示，获取分配到的资源的信息包括，
    所述UE解调所述下行控制信息，获取所述UE对应的第一子字符串，从而根据与所述第一子字符串与所述分配给所述UE的连续资源的映射关系，获取所述分配给所述UE的连续资源的信息；其中，所述下行控制信息的循环冗余校验校验码经过所述UE的标识信息加扰。
  12. 一种基站，其特征在于，所述基站包括，
    生成单元，用于生成下行控制信息，所述下行控制信息中包含公共资源分配指示信息，所述公共资源分配指示信息用于指示分配给包括所述第一UE在内的多个UE的资源；
    发送单元，用于向用户设备UE发送下行控制信息，以使得所述第一UE根据所述公共资源分配指示信息，获取分配到的资源的信息。
  13. 根据权利要求12所述的基站，其特征在于，
    所述公共资源分配指示信息包含二进制码组成的字符串，
    所述字符串包含第一子字符串，所述第一子字符串用于指示分配给所述第一UE的连续资源，其中，所述第一子字符串包含的至少一个连续比特表示分配给所述第一UE的连续资源；
    所述字符串还包括至少一个第二子字符串，所述至少一个第二子字符串用于指示分配给所述第一UE之外的至少一个UE的连续资源，其中，所述第二子 字符串包含的至少一个连续比特表示分配给所述第一UE之外的至少一个UE中的一个UE的连续资源。
  14. 根据权利要求13所述的基站，其特征在于，
    所述第一子字符串为连续的二进制码1，且与所述第一子字符串相邻的第二子字符串为连续的二进制码0；或者
    所述第一子字符串为连续的二进制码0，且与所述第一子字符串相邻的第二子字符串为连续的二进制码1。
  15. 根据权利要求13或14所述的基站，其特征在于，当所述公共资源分配信息指示包含多个第二子字符串时，
    所述多个第二子字符串包括间隔排列的由连续的二进制码1组成的第二子字符串以及由连续的二进制码0组成的第二子字符串。
  16. 根据权利要求13-15任一所述的基站，其特征在于，所述生成单元还用于，
    使用所述第一UE的标识信息对所述下行控制信息的循环冗余校验校验码加扰，以使得所述第一UE解调所述下行控制信息，获取所述第一UE对应的第一子字符串，从而根据与所述第一UE相对应的子字符串与上行资源的映射关系，获取分配给所述第一UE的上行资源的信息。
  17. 根据权利要求12-16任一所述的基站，其特征在于，所述公共资源分配指示信息用于指示分配给包括所述第一UE在内的多个UE的资源包括，
    所述公共资源分配指示信息用于指示分配给所述第一UE的资源块组，所述资源块组中包含至少一个资源块。
  18. 根据权利要求17所述的基站，其特征在于，所述生成单元还用于，确定所述公共资源分配指示信息的长度，包括
    根据分配给所述多个UE的总资源大小以及所述资源块组中包含的资源块数，确定所述公共资源分配指示的长度，其中，所述公共资源分配指示中指示的UE的数量与所述公共资源分配指示的长度成正比。
  19. 一种用户设备UE，其特征在于，包括
    接收单元，用于接收下行控制信息，所述下行控制信息中包含公共资源分配指示信息，所述公共资源分配指示信息用于指示分配给包括所述UE在内的多个UE的资源；
    处理单元，用于根据所述公共资源分配指示，获取分配到的资源的信息。
  20. 根据权利要求19所述的UE，其特征在于，
    所述公共资源分配指示包含二进制码组成的字符串，
    所述字符串包含第一子字符串，所述第一子字符串用于指示分配给所述UE的连续资源，其中，所述第一子字符串包含的至少一个连续比特表示分配给所述UE的连续资源；
    所述字符串还包括至少一个第二子字符串，所述至少一个第二子字符串用于指示分配给所述UE之外的至少一个UE的连续资源，其中，所述第二子字符串包含的至少一个连续比特表示分配给所述UE之外的至少一个UE中的一个UE的连续资源。
  21. 根据权利要求20所述的方法，其特征在于，
    所述第一子字符串为连续的二进制码1，且与所述第一子字符串相邻的第二子字符串为连续的二进制码0；或者
    所述第一子字符串为连续的二进制码0，且与所述第一子字符串相邻的第二子字符串为连续的二进制码1。
  22. 根据权利要求20或21所述的UE，其特征在于，所述处理单元具体用于，
    解调所述下行控制信息，获取所述UE对应的第一子字符串；
    根据与所述第一子字符串与所述分配给所述UE的连续资源的映射关系，获取所述分配给所述UE的连续资源的信息；其中，所述下行控制信息的循环冗余校验校验码经过所述UE的标识信息加扰。
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