CN102484810A - Method for allocating relay transmission resources and devices thereof - Google Patents

Method for allocating relay transmission resources and devices thereof Download PDF

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Publication number
CN102484810A
CN102484810A CN2009801613217A CN200980161321A CN102484810A CN 102484810 A CN102484810 A CN 102484810A CN 2009801613217 A CN2009801613217 A CN 2009801613217A CN 200980161321 A CN200980161321 A CN 200980161321A CN 102484810 A CN102484810 A CN 102484810A
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resource
information
cell
total
resources
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CN2009801613217A
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CN102484810B (en
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蒋琦
沈钢
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Nokia Shanghai Bell Co Ltd
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Alcatel Lucent Shanghai Bell Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • 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
    • H04L5/0058—Allocation criteria
    • 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
    • H04L5/0091—Signaling for the administration of the divided path

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A method for allocating relay transmission resources and devices thereof are disclosed. The method includes that an indication channel is generated according to the resources respectively allocated to each relay node RN in a cell, and the indication channel includes an indication information about the length of the total resources allocated to all the RNs in the cell; the start point of the total resources allocated to all the RNs is broadcasted to the cell with high layer signaling; and the indication information is broadcasted to the cell, thereby enabling each RN to determine the prospective information according to the length of the total resources and the start point of the total resources. The signaling overhead when configuration is performed for the resources transmitted for relay can be reduced with the technique scheme.

Description

Method for allocating relay transmission resources and devices thereof
Relay transmission resource allocation methods and its equipment technical field
The present invention is broadly directed to relay transmission system, more particularly, to the method and its equipment for relay transmission resource allocation.Background technology
In RAN1 #57, #57bis and #58 meeting, the back haul link design relayed on Class1 is discussed.A kind of new physical control channel R-PDCCH (relaying Physical Downlink Control Channel）It is used in the subframe of semi-static distribution be directed to downlink backhaul data（" R-PDSCH (relaying Physical Downlink Shared Channels） "）With uplink backhaul data（" R-PUSCH (relaying Physical Uplink Shared Channels） "）Dynamically or " semi-permanently " distribution up-link and down-chain resource.R-PDCCH is sent in the OFDM symbol subset of the subframe of the back haul link distribution for downlink.OFDM symbol subset may include the complete set available for the back haul link.
When using Dynamic Resource Allocation for Multimedia and when the via node in a cell（RN when number) becomes huge, it is assumed that each relaying is incorrect with R-PDCCH map sections that are identical and fixing.Fig. 8 shows the resource allocation example of prior art.As shown in figure 8, being designed according to PCFICH version 8, by the resource unit of some fixations（RE, resource element) each relaying is respectively dedicated to place R-PCFICH.But when the number of RN in each cell becomes big, this method may cause the expense increase that control signaling is designed.
Therefore a kind of new resource distribution mode is needed, the problem of to overcome above-mentioned.The content of the invention
Embodiments of the present invention propose a kind of relay transmission resource allocation methods and its equipment.
According to the one side of embodiment of the present invention there is provided a kind of relay transmission resource allocation methods, including：According to for each via node in cell（RN the resource generation) distributed respectively indicates to be included as the configured information of the length of the total resources of all RN distribution in the cell in channel, the instruction channel；To the Jian initial points that the Cell Broadcast CB is the total resources that all RN are distributed in high-level signaling；And to channel is indicated described in the Cell Broadcast CB, to cause each described RN to determine desired information according to the length of the total resources and the Jian initial points of the total resources.
According to the another aspect of embodiment of the present invention, it is proposed that a kind of base station, including：Resource allocation unit, for distributing resource for each RN in cell；Channel forming unit, the instruction channel of the length of the total resources of all RN distribution in the cell is designated as generating；High-level signaling processing unit, for by the beginning on the resource In the information insertion high-level signaling of point；Transmitting element, for sending the information for indicating channel and the starting point on resource to each described RN.
According to the another further aspect of embodiment of the present invention, it is proposed that a kind of via node, including：Receiving unit, for receiving the signal sent from base station, the signal includes the starting point for indicating channel and the total resources for being designated as the length of the total resources of all RN distribution in cell；Information acquisition unit, for obtaining desired information from the signal received in the way of blind search.
According to the another further aspect of embodiment of the present invention, it is proposed that a kind of communication system, including above-described base station, multiple via nodes and multiple mobile terminals.
Technical scheme based on more than, due to an instruction channel being used only in embodiments of the present invention（That is, group R-PCFICH) indicate whole resource units (RE) shared by RN all in cell R-PDCCH, compared to the prior art, reduce the expense of the resource for being designated as each RN distribution.When RN number is larger in the cell, the load of system can be efficiently reduced.Brief description of the drawings
According to the following description with reference to accompanying drawing, advantages of the present invention will become prone to understand, wherein-Fig. 1 shows the schematic diagram of communication system according to the embodiment of the present invention；
Fig. 2 shows the block diagram of base station according to the embodiment of the present invention；
Fig. 3 shows the block diagram of RN according to the embodiment of the present invention；
Fig. 4 shows the flow chart of resource allocation methods according to the embodiment of the present invention；
Fig. 5 shows the resource allocation schematic diagram according to an embodiment of the invention；
Fig. 6 shows resource allocation schematic diagram according to another implementation of the invention；
Fig. 7 shows resource allocation schematic diagram according to another implementation of the invention；
Fig. 8 shows the resource allocation schematic diagram according to prior art.Embodiment
With reference to the accompanying drawings to a preferred embodiment of the present invention will be described in detail, it is unnecessary details and function for the present invention to eliminate in the course of the description, to prevent the understanding of the present invention from causing to obscure.
In embodiments of the present invention, it is proposed that a kind of communication system for resource allocation, as shown in figure 1, the communication system includes base station as described below, relaying and multiple mobile terminals（UE).Although merely illustrating two via nodes in Fig. 1（Via node 1 and via node 2) and two mobile terminals（UE1 and UE2), so And, it should be appreciated that the communication system that embodiment of the present invention is proposed can include those skilled in the art usually used any number of via node and mobile terminal.
A kind of base station is also proposed, as shown in Fig. 2 the base station includes resource allocation unit 210, for each via node in the cell for the base station（RN resource) is distributed, here, resource can occur in the form of resource-area or resource unit (RE).Channel forming unit 220, the instruction channel of the length of the total resources of all RN distribution in cell is designated as generating；And high-level signaling processing unit 230, for will be inserted on the information of the starting point of total resources in high-level signaling, for example, defining new message in a rrc layer to send the information.Transmitting element 240, for the information to each RN transmissions instruction channel and the Jian initial points on resource.
The base station also includes the first memory cell 250, for storing information required when base station is handled, such as information relevant with the RN in cell（Such as, RN quantity, mark etc.）, with the relevant information of resource available for distribution etc., so that other units are used.
In addition, each RN of transmitting element 240 in the form of broadcast into cell sends the information of the starting point on resource.
It also proposed a kind of via node（RN), as shown in figure 3, the RN includes receiving unit 310, for receiving the signal sent from base station, the signal includes the starting point for indicating channel and the total resources of the length of the total resources of all RN distribution in the cell for be designated as base station；Information acquisition unit 320, for obtaining desired information, such as R-PDCCH from the signal received in the way of blind search.
The RN also includes the second memory cell 330, required information when being handled for storage information acquiring unit 320.
Although base station and the RN of the embodiment of the present invention are described in the form of the functional module of separation above, but each component shown in Fig. 2 and Fig. 3 can realize that the multiple components shown can also be integrated in chip piece or an equipment in actual applications with multiple devices in actual applications.The base station and RN may also comprise any unit and device for other purposes.
With reference to Fig. 4, the base station provided embodiments of the present invention and RN function are further elaborated.
In step 410, the resource allocation unit 210 of base station is each RN distribution resources in the cell of the base station.Various information needed for resource allocation, such as information relevant with the RN in cell（Such as, RN quantity, mark etc.）, may be stored in the first memory cell 250 with the relevant information of resource available for distribution etc..Usually used resource allocation algorithm can be used to distribute resource for each RN for resource allocation unit.
Preferably, the resource-area being made up of in step 410 for each RN resources distributed continuous resource unit. At step 420, channel forming unit 220 is according to the resource distributed in step 410 for each RN, and generation is designated as the instruction channel group R-PCFICH (group R-PCFICH) of the length of the total resources of each RN distribution.
Group R-PCFICH only uses resource-area（One group of continuous resource unit（RE)) to indicate whole resource units in a cell shared by all RN R-PDCCH, rather than the resource unit that each RN is each accounted for is indicated respectively.
In step 430, transmitting element 240 is sent as the Jian initial points of each RN total resources distributed by high-level signaling.Preferably, it is transmitted by way of broadcast.High-level signaling mentioned here refers to the signaling of each layer on physical layer, such as rrc layer signaling.
Alternatively, will can together it be sent for the end point and/or starting point of each RN total resources distributed.
In step 440, transmitting element 240 sends group R-PCFICH, it is preferable that be transmitted by the way of broadcast.
In step 450, each RN in cell is by the whole resource-area of blind search to find its special R-PDCCH.Specific method is that the receiving unit 310 in RN is received after signal from base station, since the Jian initial points of resource-area, and the signal of corresponding transmitted over resources is obtained with certain granularity（For example, there is 8 CCE (control channel units）In the case of, can with 1, the granularity of 2,4 control channel units carry out signal acquisition）.Because RN has certain understanding to the desired signal received, therefore information acquisition unit 320 can use the information that RN is expected in itself（Such as, the pseudo-random sequence arranged in advance with base station）The signal received is decoded, if it succeeds, obtaining desired information, such as R-PDCCH.Preferably, decoded herein using CRC verifications, if CRC check result is matched, obtain desired information.
Preferably, the information needed for RN can be handled（Such as, the pseudo-random sequence arranged in advance）It is stored in the second memory cell 330.
In the above embodiment, it is preferable that in order to avoid decoding delay is long, can be according to the value indicated by the total frequency spectrum resource changing group R-PCFICH transmitted for all R-PDCCH.Starting point and/or end point can also be according to used total frequency spectrum resource changings.For example, the resource that can be used in cell is reduced, the value indicated by group R-PCFICH also can accordingly diminish, and starting point and/or end point also correspondingly change.
Fig. 5-7 respectively illustrates the resource allocation in the case of these three for FDM multiplexing schemes, TDM multiplexing schemes and FDM+TDM hybrid multiplexs scheme.Fig. 5-7 transverse axis is symbolic number, and the longitudinal axis is sub-carrier number, and the specific number of symbol and subcarrier is determined according to specific LTE protocol.It can be seen that the technical scheme proposed in embodiments of the present invention is unrelated with the mode of resource multiplex.
Fig. 5-7 is compared with Fig. 8 of prior art, it can be seen that embodiments of the present invention saved with it is every R-PCFICH corresponding one RN.And with the increase of RN in cell, the effect is more obvious.Those skilled in the art be should be readily recognized that, the different step of the above method can be realized by programmed computer.Here, some embodiments equally include machine readable or computer-readable program storage device（Such as, digital data storage medium）And the programmed instruction that encoding machine is executable or computer is executable, wherein, the instruction performs some or all steps of the above method.For example, program storage device can be digital storage, magnetic storage medium（Such as Disk and tape）, hardware or readable digital data storage medium of light.Embodiment equally includes the programmed computer for performing the step of the above method.
Description and accompanying drawing only show the principle of the present invention.Thus, it will be appreciated that those skilled in the art can advise different structures, although these different structures are not expressly recited or shown here, but embody the principle of the present invention and be included within its spirit and scope.In addition, it is all referring herein to example be clearly mainly served only for teaching purpose to help reader to understand the design of promotion this area that the principle of the present invention and inventor are contributed, and should be interpreted it is not the limitation to these examples and condition that are specifically mentioned.In addition, all principle, the statement of aspect and embodiment and its specific examples for mentioning the present invention are comprising including its equivalent herein.
Above description is only used for realizing embodiments of the present invention; it should be appreciated by those skilled in the art; the any modification or partial replacement of the scope of the present invention is not being departed from; the scope that the claim of the present invention should be belonged to limit; therefore, protection scope of the present invention should be defined by the protection domain of claims.

Claims (9)

  1. Claim
    1st, a kind of relay transmission resource allocation methods, including：
    Resource generation according to being distributed respectively for each via node RN in cell indicates to be included as the configured information of the length of the total resources of all RN distribution in the cell in channel, the instruction channel；
    To the starting point that the Cell Broadcast CB is the total resources that all RN are distributed in high-level signaling；And to channel is indicated described in the Cell Broadcast CB, to cause each described RN to determine desired information according to the length of the total resources and the starting point of the total resources.
    2nd, according to the method described in claim 1, wherein, each described RN determines that desired information includes according to the total length of the resource and the Jian initial points of total resource：
    Each described RN carries out blind search to be defined as the resource of its distribution according to the total length of the resource and the Jian initial points of total resource.
    3rd, method according to claim 2, wherein, the blind search includes：
    The signal of corresponding transmitted over resources is obtained with specific granularity；
    The information expected in itself using each described RN is decoded to the signal of the corresponding transmitted over resources respectively, if successfully decoded, obtains the expected information.
    4th, according to the method described in claim 1, in addition to：
    According to the total frequency spectrum resource transmitted for all R-PDCCH, change the total length of the resource and the starting point of the total resources.
    5th, according to the method described in claim 1, in addition to,
    To the end point that the Cell Broadcast CB is the total resources that all RN are distributed in high-level signaling, to cause each described RN to determine desired information according to the length of the total resources and the starting point and/or end point of the total resources.
    6th, a kind of base station, including：
    Resource allocation unit, resource is distributed for each RN in the cell for the base station；
    Channel forming unit, the instruction channel of the length of the total resources of all RN distribution in the cell is designated as generating；
    High-level signaling processing unit, for will be inserted on the information of the Jian initial points of the resource in high-level signaling；Transmitting element, for sending the information for indicating channel and the starting point on resource to each described RN. 7th, base station according to claim 6, wherein, the transmitting element sends the information of the starting point on resource in the form of broadcasting to each described RN.
    8th, a kind of via node, including：
    Receiving unit, for receiving the signal sent from base station, the signal includes the starting point for indicating channel and the total resources for being designated as the length of the total resources of all RN distribution in the cell of the base station；
    Information acquisition unit, for obtaining desired information from the signal received in the way of blind search.
    9th, via node according to claim 8, in addition to
    Second memory cell, the information for storage information acquiring unit to carry out blind search.
    10th, a kind of wireless communication system, including base station according to claim 6 or 7, multiple via nodes and multiple mobile terminals according to claim 8 or claim 9.
CN200980161321.7A 2009-11-03 2009-11-03 Method for allocating relay transmission resources and devices thereof Active CN102484810B (en)

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PCT/CN2009/001219 WO2011054127A1 (en) 2009-11-03 2009-11-03 Method for allocating relay transmission resources and devices thereof

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114223292A (en) * 2019-08-15 2022-03-22 华为技术有限公司 Resource indication method and device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100589633C (en) * 2006-07-10 2010-02-10 华为技术有限公司 Relay forward method for broadband wireless access
CN101291473B (en) * 2007-04-20 2011-12-28 中兴通讯股份有限公司 Resource scheduling method of multi-hop relaying network
WO2009072191A1 (en) * 2007-12-05 2009-06-11 Fujitsu Limited Parameter collecting method, radio base station and relay station
CN101527934A (en) * 2008-03-05 2009-09-09 上海华为技术有限公司 Method, system and correlative device for allocating resources

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114223292A (en) * 2019-08-15 2022-03-22 华为技术有限公司 Resource indication method and device

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Address after: 201206 Pudong New Area, Nanjing Road, No. 388, Shanghai

Patentee after: Shanghai NOKIA Baer Limited by Share Ltd

Address before: 201206 Pudong New Area, Nanjing Road, No. 388, Shanghai

Patentee before: Shanghai Alcatel-Lucent Co., Ltd.