WO2014029329A1 - Procédé d'attribution de ressources en liaison montante, station de base évoluée, équipement d'utilisateur et système de communication - Google Patents

Procédé d'attribution de ressources en liaison montante, station de base évoluée, équipement d'utilisateur et système de communication Download PDF

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Publication number
WO2014029329A1
WO2014029329A1 PCT/CN2013/081925 CN2013081925W WO2014029329A1 WO 2014029329 A1 WO2014029329 A1 WO 2014029329A1 CN 2013081925 W CN2013081925 W CN 2013081925W WO 2014029329 A1 WO2014029329 A1 WO 2014029329A1
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Prior art keywords
user equipment
resource allocation
allocated
resource
resource block
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PCT/CN2013/081925
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English (en)
Chinese (zh)
Inventor
张向东
李强
张雯
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华为技术有限公司
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Publication of WO2014029329A1 publication Critical patent/WO2014029329A1/fr

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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

  • Uplink resource allocation method evolved base station and user equipment, and communication system
  • the present invention relates to the field of wireless communications, and in particular, to an uplink resource allocation method, an evolved base station, a user equipment, and a communication system. Background technique
  • the scheduling unit is one subframe, that is, 1 millisecond.
  • the subframe has two structures: a normal subframe and a special subframe, where the normal subframe includes two slots, each slot is 0.5 milliseconds, according to In the order of each time slot, two time slots in a normal subframe are respectively referred to as time slot one and time slot two according to chronological order; the special subframe includes three special time slots.
  • FIG. 1 is a reference diagram of a resource allocation type of type1 in which an uplink resource allocation exists in a prior art LTE system.
  • a resource block group (RBG) is allocated as a basic physical resource unit, where each RBG is composed of multiple physics.
  • a physical resource block is composed of a PRB having a length in the time domain and a width of 180 kHz in the frequency domain.
  • Figure 1 is an example of a system with 25 PRBs in bandwidth.
  • the system bandwidth 25 PRBs are divided into 13 RBGs in units of 2 PRBs, and the last RBG contains 1 PRB.
  • the allocated resources are divided into two discrete clusters cluster.
  • s0 and s1 are the resource allocation start position and end of the cluster! in RBG, respectively
  • s2 and S3 are the resource allocation start position and end position of the cluster2 in RBG.
  • the minimum resource allocated is one cluster, one RBG, 2 PRB.
  • each RBG contains 4 PRBs.
  • the primary resource allocation is at least 4 PRBs.
  • the data packets that need to be transmitted usually occupy less resources and allocate resources of 4 PRBs at a time, which may cause waste of resources.
  • An object of the embodiments of the present invention is to provide an uplink resource allocation method, so as to reduce granularity of allocated resources in a resource allocation type typel.
  • the embodiment of the present invention provides an uplink resource allocation method, where the method includes: generating resource allocation information according to a data communication type of the user equipment; and transmitting resource allocation information to the user equipment in the physical downlink control channel, where
  • the resource allocation information includes a resource allocation field indicating a resource allocated to one of the user equipments, the resource allocation field including a number indication field bit of the resource block group allocated to the user equipment, and the And the indication information field bit of the resource block of the user equipment that is allocated to the at least one resource block of the user equipment, so that the user equipment determines the resource allocated to itself according to the resource allocation domain.
  • an embodiment of the present invention provides an uplink resource allocation method, where the method includes: receiving resource allocation information that is sent by an evolved base station in a physical downlink control channel, where the resource allocation information includes an indication that is allocated to a local user equipment. a resource allocation field of the resource, where the resource allocation field includes a number indication field bit of the resource block group allocated to the local user equipment, and in the resource block group that is allocated to the local user equipment, An indication information field bit of the at least one resource block allocated to the user equipment; determining, according to the resource allocation field, a resource allocated to the local user equipment.
  • an embodiment of the present invention provides an evolved base station, where the evolved base station includes: a generating unit, configured to generate resource allocation information according to a data communication type of the user equipment, and send the resource allocation information to a sending unit; a sending unit, configured to receive the resource allocation information sent by the generating unit, and send resource allocation information to the user equipment in the physical downlink control channel, where the resource allocation information includes resource allocation indicating a resource allocated to one user equipment a domain, the resource allocation field including a number indication field bit of a resource block group allocated to the user equipment, and The indication information field bit of the at least one resource block allocated to the user equipment in the resource block group allocated to the user equipment, so that the user equipment determines to allocate to the resource allocation domain according to the resource allocation domain.
  • the resources of this user device includes: a generating unit, configured to generate resource allocation information according to a data communication type of the user equipment, and send the resource allocation information to a sending unit; a sending unit, configured to receive the resource allocation information sent by the generating unit, and send resource
  • the embodiment of the present invention provides a user equipment, where the user equipment includes: a receiving unit, and receiving resource allocation information sent by the evolved base station in a physical downlink control channel, where the resource allocation information includes an indication allocated to the user a resource allocation field of a resource of the end user equipment, where the resource allocation field includes a number indication field bit of the resource block group allocated to the local user equipment, and the resource block allocated to the local user equipment An indication information field bit of the at least one resource block that is allocated to the user equipment, and an identification unit that determines a resource allocated to the local user equipment according to the resource allocation domain.
  • the embodiment of the present invention further provides a communication system, which may include the evolved base station provided by the embodiment of the present invention and the user equipment provided by the embodiment of the present invention.
  • the base station sends resource allocation information indicating a resource allocation domain indicating a resource allocated to one user equipment to the user equipment in the physical downlink control channel, where the user equipment indicates according to the resource allocation domain.
  • the resource block allocation information field distinguishes the resource blocks specifically allocated to one user equipment in one resource block group, thereby reducing the minimum granularity of resource allocation and achieving the purpose of saving resources.
  • FIG. 1 is a format of a prior art uplink resource allocation
  • FIG. 3 is a schematic flowchart of an embodiment of an uplink resource allocation method according to an embodiment of the present disclosure
  • FIG. 5 is a resource allocation reference diagram of an embodiment of an uplink resource allocation method according to an embodiment of the present disclosure
  • FIG. 6 is a resource allocation reference diagram of an embodiment of an uplink resource allocation method according to an embodiment of the present invention.
  • FIG. 7 is a resource allocation reference diagram of an embodiment of an uplink resource allocation method according to an embodiment of the present disclosure.
  • FIG. 8 is a resource allocation reference diagram of an embodiment of an uplink resource allocation method according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of an embodiment of an evolved base station according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of an embodiment of a user equipment according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a communication system according to an embodiment of the present invention.
  • the LTE system is mainly composed of a terminal, a base station, and a core network.
  • the base stations may have logical or physical connections as needed.
  • the network consisting of base stations, base stations, and terminals is called a radio access network (RAN), which is responsible for access layer transactions, such as radio resource management; uplink and downlink.
  • RAN radio access network
  • the radio resources are scheduled by the base station in a shared channel manner, the base station is connected to the core network node (CN), and the core network is responsible for non-access stratum transactions.
  • CN core network node
  • a terminal is a user equipment, which refers to a device that can communicate with a network, such as a mobile phone or a laptop computer, and each terminal is usually only connected to one base station of the network in the uplink direction.
  • the base station In the LTE system, the base station is often called Evolved base station eNodeB.
  • the method for allocating RBGs for any one of the terminals managed by the evolved base station (eNodeB) according to the type 1 type in the LTE system is: eNodeB The terminal that sends the channel quality indicator (CQI) information, according to the resource allocation algorithm specified by the protocol Performing RBG allocation for slot 1 and slot 2 for the terminal; eNodeB passes RBG allocation result through downlink control information (Downlink Control Information, DCI) informs the terminal that the terminal is specified according to DCI
  • CQI channel quality indicator
  • DCI Downlink Control Information
  • the RBG location performs reception and transmission of uplink and downlink service data.
  • FIG. 3 is a flowchart of an embodiment of an uplink resource allocation method according to the system shown in FIG. 2. This embodiment is described by using an evolved base station as an execution subject.
  • the uplink resource allocation method includes:
  • Step S301 Generate resource allocation information according to the data communication type of the user equipment.
  • the evolved base station uses the channel quality indication information CQI uploaded by the UE as the reference data of the allocated resource according to whether the user equipment is to perform the machine type communication MTC. Generate resource allocation information by referring to other data.
  • Step S302 Send resource allocation information to the user equipment in the physical downlink control channel.
  • the downlink control information DCI includes resource allocation information for one UE or one group of UEs.
  • the eNodeB writes the RBG allocation result in the resource allocation field of the resource allocation information in the DCI, that is, the resource allocation domain, and passes the DCI through the physical downlink control channel.
  • the PDCCH is sent to the user equipment.
  • the user equipment determines, according to the resource allocation domain, a resource allocated to the user equipment;
  • the eNodeB may also send indication information at the same time as transmitting the resource allocation information or before transmitting the resource allocation information, and inform the UE according to what rules the resource blocks allocated to itself are determined from the resource allocation domain. For example, it is determined in the conventional typel or in the indication rule given in the embodiment of the present invention.
  • the resource blocks are determined according to the rules given by the embodiment of the present invention.
  • FIG. 4 is a schematic diagram of an uplink resource allocation method performed on the user equipment side, and the method includes: Step S401, receiving resource allocation information;
  • the UE receives the downlink control information DCI sent by the eNodeB in the PDCCH, and the DCI information includes resource allocation information, where the resource allocation information includes a resource allocation domain of resources allocated to the local user equipment.
  • the resource allocation field includes a number indication field bit of the resource block group allocated to the local user equipment, and is allocated to the user in the resource block group allocated to the local user equipment.
  • the indication information field bit of at least one resource block of the device is allocated to the resource block group allocated to the local user equipment.
  • the number of physical resource blocks included in different bandwidths is different, and the number of physical resource blocks included in each resource block group is also different.
  • a 10 MHz system bandwidth, consisting of 50 RBs is divided into 17 RBGs, where the first 16 RBGs each include 3 RBs, and the last RBG contains only 2 RBs.
  • each RBG For a system with a bandwidth of 20 MHz, including 100 PRBs, each RBG contains 4 PRBs. Therefore, each RBG should have a corresponding number, occupying several bits in the resource allocation domain to distinguish. In each RBG, at least one resource block to which the user equipment is allocated is also indicated by an indication information field bit.
  • Step S402 determining resources allocated to the local user equipment according to the resource allocation domain.
  • the user equipment decodes indication information of different field bits in the resource allocation domain in the resource allocation domain according to a predetermined decoding format, and determines allocation.
  • the UE may also receive the indication information that is sent by the eNodeB before or during the transmission of the resource allocation information, and obtain the rule for determining the resource block allocated by the base station to the local UE from the resource allocation domain according to the indication information. For example, it is determined according to the conventional typel or the rules given in the embodiment of the present invention. Reference map.
  • the system bandwidth is 100 PRBs, and the RBGs include 4 PRB can be divided into 25 RBGs, numbered 0 to 24.
  • the specific PRB allocated to a certain UE may be indicated in a bitmap bitmap manner by using the indication information field bit in the resource allocation field in the DCI. Whether the resource block corresponding to the bit is allocated to the corresponding user equipment is distinguished by a value of a different bit in the indication information field bit.
  • the N bits of the bit may be used to indicate the allocation of the RBGs identified by the sO and the si and the N PRBs of the PRBs included in the subsequent one or more RBGs. , with "log 2 P, bit indications assigned to a user terminal
  • RBG number, ", indicates rounding up.
  • the 0th and the 3rd PRBs assigned to the user equipment A are indicated.
  • the user equipment can obtain resources according to field bits in the resource allocation domain of the DCI.
  • Figure 6 shows a reference diagram of another resource allocation method with a bandwidth of 50 PRBs.
  • an RBG contains only 3 PRBs, and the bandwidth only contains 17 RBGs.
  • the last RBG contains only 2 PRBs.
  • N bits of the bitmap can be used to indicate the RBGs identified by sO and si and the N PRBs of the PRBs included in one or more subsequent RBGs.
  • "log 2 P, bit indicates the RBG number assigned to a user terminal, ", indicating rounding up.
  • the first in S0 The PRB is assigned to user equipment A, and the code is 100.
  • the first two PRBs in S2 are assigned to user equipment A, and the code is 110.
  • the user equipment may acquire resources according to a preset decoding rule according to field bits in the resource allocation field of the DCI.
  • s2 and s3 may also be reinterpreted to identify the allocation of RBs in the RBG indicated by s2 and s3.
  • the base station can use a bitmap mode to indicate which user equipment PRB is specifically allocated in one RBG.
  • the minimum granularity of the resource allocation type typel can be reduced to one PRB. , not an RBG.
  • the value of the indication field bit may be interpreted as needed.
  • the allocation to the user equipment A may be represented by 1010.
  • the second and fourth PRBs may be represented by 1010.
  • FIG. 7 is a resource allocation reference diagram of another embodiment of an uplink resource allocation method according to an embodiment of the present invention. Similarly, this embodiment is exemplified by a system bandwidth of 100 PRBs.
  • At least one resource block allocated to the user equipment is indicated in a manner of a specific length indication in a resource block group assigned to a user equipment.
  • RBGs indicated by SI only the first one is assigned to user equipment B, and the PRB length assigned to user equipment B is 00.
  • a bit indication is used.
  • the embodiment shown in FIG. 7 is left-aligned, that is, several consecutive PRBs from the left are Assigned to a user device.
  • a "log 2 N" bit bitmap can be used to indicate the RBG identified by s0 and si and the N of the PRBs included in one or more subsequent RBGs. The allocation of PRBs.
  • the user equipment B After receiving the DCI, the user equipment B distinguishes the resources allocated by the eNodeB to itself according to the indication of the corresponding field bit in the DCI.
  • Figure 8 shows an example of a bandwidth of 50 PRBs.
  • the RBG size is 3 and is divided into 17 RBGs. Therefore, si and s3 use the length value of 2 bits to indicate the RB allocation in the RBG.
  • a "log 2 N" bit bitmap can be used to indicate the allocation of RBGs identified by sO and si and N PRBs in PRBs included in one or more subsequent RBGs.
  • the code 00 indicates that only the first PRB is allocated to the user equipment C.
  • the three PRBs in S2 are all assigned to user equipment C, and the code is 10.
  • a bit indication may be used.
  • RBG whether the PRB allocated to a user equipment is left-aligned or right-aligned, the embodiment shown in FIG. 8 is left-aligned, that is, several consecutive PRBs from the left are Assigned to a user device.
  • the user equipment may acquire resources according to a preset decoding rule according to field bits in the resource allocation field of the DCI.
  • the base station can indicate the PRB of the user equipment that is specifically allocated to the RBG in the manner of the length indication.
  • the minimum granularity of the resource allocation type type1 can be reduced to one. PRB, not an RBG.
  • the embodiment of the present invention provides an evolved base station.
  • the evolved base station 900 includes:
  • the generating unit 901 is configured to generate resource allocation information, and send the generated resource allocation information to the sending unit 902.
  • the sending unit 902 is configured to receive the resource allocation information sent by the generating unit 901, and send resource allocation information to the user equipment in the physical downlink control channel, where the resource allocation information includes resources allocated to resources of one user equipment.
  • An allocation domain where the user equipment determines, according to the resource allocation information indicated by the resource allocation domain, a resource allocated to the user equipment;
  • the resource allocation field includes a number indication field bit of a resource block group allocated to the user equipment, and is allocated to the user in the resource block group allocated to the user equipment.
  • the sending unit 902 sends the DCI information that is coded according to the bitmap indication or the length indication method to the UE by using the PDCCH according to a preset method, so that the UE distinguishes the resources allocated to itself.
  • the embodiment of the present invention further provides a user equipment.
  • the user equipment 1000 includes:
  • the receiving unit 1001 receives the resource allocation information that is sent by the evolved base station in the physical downlink control channel, where the resource allocation information includes a resource allocation domain that indicates a resource allocated to the local user equipment, where the resource allocation domain includes a number indication field bit of the resource block group of the local user equipment, and an indication information field bit of the at least one resource block allocated to the user equipment in the resource block group allocated to the local user equipment. ;
  • the identifying unit 1002 determines, according to the resource allocation information indicated by the resource allocation field, the resource allocated to the local user equipment.
  • the receiving unit 1001 may receive the DCI information sent by the eNodeB to the UE according to the CQI, and then the identification unit 1002 decodes according to the set bitmap indication or the length indication method to determine the resource allocated to the UE.
  • the device in the foregoing embodiment is a virtual device for implementing the uplink resource allocation method in the foregoing embodiment, and each unit is only divided by functions, and thus cannot be understood as a limitation on the core idea of the present invention.
  • Those skilled in the art based on the ability to perform the functions of the method of the present invention, perform programming and module integration, as long as the corresponding functions are completed, and should be included in the scope of the present invention.
  • an embodiment of the present invention further provides a communication system, where the system includes a user equipment 1000 and an evolved base station 900, and the two communicate through a wireless network.
  • the evolved base station 900 includes a generating unit 901 and a transmitting unit 902, and the user equipment 1000 includes a receiving unit 1001 and an identifying unit 1002.
  • the generating unit 901 generates resource allocation information, and sends the generated resource allocation information to the sending unit 902.
  • the sending unit 902 receives the resource allocation information sent by the generating unit 901, and sends the resource allocation information to the user equipment 1000 in the physical downlink control channel.
  • the resource allocation information is received by the receiving unit 1001 of the user equipment 1000, and the resource allocation information that is sent by the generating unit of the evolved base station 900 in the physical downlink control channel, where the downlink control information includes resources allocated to resources of the local user equipment.
  • the identification unit 1002 determines the resource allocated to the local user equipment according to the resource allocation information indicated by the resource allocation domain.
  • the steps of a method or algorithm described in connection with the embodiments disclosed herein can be implemented in hardware, a software module executed by a processor, or a combination of both.
  • the software module can be placed in random access memory (RAM), memory, read only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or technical field. Any other shape known In the storage medium.
  • RAM random access memory
  • ROM read only memory
  • electrically programmable ROM electrically erasable programmable ROM
  • registers hard disk, removable disk, CD-ROM, or technical field. Any other shape known In the storage medium.

Abstract

La présente invention concerne un procédé d'attribution de ressources en liaison montante. Le procédé comporte les étapes consistant à : générer des informations d'attribution de ressources ; et envoyer les informations d'attribution de ressources à un équipement d'utilisateur dans un canal physique de commande en liaison descendante, les informations d'attribution de ressources contenant un domaine d'attribution de ressource d'une ressource attribuée à un équipement d'utilisateur, de telle façon que l'équipement d'utilisateur détermine la ressource attribuée audit équipement d'utilisateur en fonction du domaine d'attribution de ressource, le domaine d'attribution de ressource comportant un bit de champ d'indication de nombre d'un groupe de blocs de ressources attribués à l'équipement d'utilisateur, et un bit de champ d'information d'indication d'au moins un bloc de ressources attribué à l'équipement d'utilisateur, parmi le groupe de blocs de ressources attribué à l'équipement d'utilisateur. A l'aide du procédé selon les modes de réalisation de la présente invention, la granularité minimale de l'attribution de ressources dans les communications de type machine peut être réduite, atteignant ainsi l'objectif d'une économie de ressources.
PCT/CN2013/081925 2012-08-21 2013-08-21 Procédé d'attribution de ressources en liaison montante, station de base évoluée, équipement d'utilisateur et système de communication WO2014029329A1 (fr)

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CN201210298674.5A CN103634912B (zh) 2012-08-21 2012-08-21 上行资源分配方法、演进基站和用户设备以及通讯系统
CN201210298674.5 2012-08-21

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