WO2012059030A1

WO2012059030A1 - Method and system for backhaul link physical uplink control channel resource allocation

Info

Publication number: WO2012059030A1
Application number: PCT/CN2011/081549
Authority: WO
Inventors: 杨瑾; 毕峰; 吴栓栓; 袁明; 梁枫; 朱常青
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-11-02
Filing date: 2011-10-31
Publication date: 2012-05-10
Also published as: CN102457968A; CN102457968B

Abstract

Provided are a method and system for Un PUCCH resource allocation. The method comprises: a network side configures n-number of Un PUCCH resource indices for a relay node through radio resource control information according to the Un PUCCH transmission mode used to configure the relay node and the PUCCH mode used by the relay node, wherein n is an integer equal to or greater than 1. Through the method and system, Un PUCCH resources can be allocated by RRC signals.

Description

Method and system for physical uplink control channel resource allocation of backhaul link

Technical field

The present invention belongs to the field of mobile communications, and in particular, to a method and system for resource allocation of an uplink control channel for a backhaul link.

Background technique

As an emerging technology, Relay technology has attracted more and more attention and is regarded as the key technology of B3G/4G. Since future wireless communication or cellular systems require complete network coverage and support for higher rate transmission, this poses new challenges for wireless communication technologies. At the same time, the cost of system construction and maintenance is even more acute. As the transmission rate and communication distance increase, the problem of battery energy consumption becomes prominent, and future wireless communication will use higher frequencies, resulting in more serious path loss attenuation. Through the relay technology, the traditional single-hop link can be divided into multiple multi-hop links. Due to the shortened distance, the path loss will be greatly reduced, which will improve the transmission quality and expand the communication range, thereby providing users with more Fast and better service.

In a network that introduces a Relay Node (RN), as shown in FIG. 1, a link between an evolved base station (eNB) and a Macro User Equipment (M-UE) in the network is called a direct transmission. Link (Direct Link), the link between the eNB and the RN is called the backhaul link (Backhaul Link), also known as the Un interface, and the link between the RN and the Relay User Equipment (R-UE). It is called Access Link.

On the direct transmission link, the information that can be carried on the Physical Uplink Control Channel (PUCCH) of the M-UE is: Scheduling Request (SR), HARQ feedback information, that is, M-UE pair. The eNB performs ACK/NACK feedback on the data reception status of the Physical Downlink Shared Channel (PDSCH), and the channel quality report, including CQI (Channel Quality Indicator) / PMI (Precoding Matrix Indicator, Pre- The coding matrix indicates) /RI ( Rank Indication). The M-UE processes and maps the uplink control information (UCI) information according to the content of the uplink control information to be reported, the PUCCH transmission mode, and the corresponding physical uplink control channel format, and transmits the uplink control information (UCI) information on the configured resources. , PUCCH The format includes: PUCCH format 1/1 a/lb, PUCCH format 2/2a/2b , PUCCH format 3 „

The physical resource allocation of the PUCCH channel is in units of RB pairs. Each PUCCH physical channel occupies a pair of RB pairs, each slot (slot) occupies one RB, hops between slots, and is symmetrically distributed at both ends of the band. In general, the physical resources of the PUCCH channel are located at both ends of the uplink system bandwidth, occupying a certain number of RB pairs. As shown in FIG. 2, the resources for carrying the PUCCH format 2/2a/2b are configured outside the uplink system bandwidth. The system is sequentially adjacent to the resource for carrying the PUCCH format 1/la/lb, and the system high-level configuration parameter indicates the number of RB pairs for carrying the PUCCH format 2/2a/2b.

The UE obtains resource allocation of the eNB to the PUCCH channel by using the resource index, and different PUCCH formats correspond to different channel index parameters. u _CH , 3⁄4CH ^ "ί3⁄45: 资源 are the resource indices corresponding to PUCCH format 1/la/lb, PUCCH format 2/2a/2b, PUCCH format 3. PUCCH format 1/la/lb resource index UH, where P is the uplink The antenna port number. The resource index "S^CH is obtained by the UE according to the control channel element CCE (Control Channel Element) index implicit mapping indicating the physical downlink control channel (PDCCH) of the corresponding PDSCH transmission. for

, uCCH ⁾ = "CCE + ¹ + ^PUCCH , respectively obtain the antenna port Ρ., Α corresponding PUCCH resource index, A3⁄4 _CCH is the high-level configuration parameter. PUCCH format 2/2a/2b resource index _H and PUCCH format 3 resource index ^ _{The H} indicates the UE by the _e NB through Radio Resource Control (RRC) signaling configuration.

The RRC message is transmitted between the eNB and the RRC layer of the control plane of the UE. One or more information elements (Information Elements, IE for short) may be configured in one RRC message, and one or more IE items may be further included in the IE. It may also include a configuration indication for various types of parameters, and the same IE item may be included in one or more RRC messages for transmission.

Currently, regarding the RRC signaling method used for the allocation of the backhaul link uplink physical control channel (Un PUCCH) resource, the eNB configures the Un PUCCH resource index to the RN through the RRC message. Obviously, the CCE-based implicit mapping relationship of the direct transmission link PUCCH format 1/la/lb cannot be reused for the Un PUCCH resource configuration indication, and how to use the RRC signaling configuration to indicate the Un PUCCH resource still has no solution. Summary of the invention

The technical problem to be solved by the present invention is to provide a method and system for Un PUCCH resource allocation to configure Un PUCCH resources by using RRC signaling.

In order to solve the above technical problem, the present invention provides a backhaul link physical uplink control channel.

( Un PUCCH ) Method of resource allocation, including:

The network side configures the corresponding n Un PUCCH resource indexes for the relay station by using a radio resource control message according to the Un PUCCH transmission mode used by the configuration relay station and the PUCCH format used by the relay station, where n is an integer greater than or equal to 1.

Preferably, the above method further has the following features: when n is greater than 1, the configured n Un

The PUCCH resource index is continuous.

Preferably, the foregoing method further has the following features: the step of configuring, by the network side, the corresponding n Un PUCCH resource indexes for the relay station by using the radio resource control message includes:

The network side indicates, in the RRC message, the minimum value N of the configured n Un PUCCH resource indexes for the relay station, and the remaining n-1 Un PUCCH resource indexes are: N+i, where Is an integer from 1 to n-1.

Preferably, the foregoing method further has the following features: When n is greater than 1, an interval k between the configured n Un PUCCH resource indexes, where k is an integer greater than or equal to 1.

The network side indicates, in the RRC message, the minimum value N of the configured n Un PUCCH resource indexes for the relay station, and indicates the k value by the Un PUCCH resource index interval, and the remaining n-1 Un PUCCH resource indexes are sequentially It is: N+i*k, where i is an integer from 1 to n-1.

Preferably, the above method also has the following features: k is equal to the total number of relay stations in the cell. Preferably, the foregoing method further has the following features: the step of configuring, by the network side, the corresponding n Un PUCCH resource indexes for the relay station by using the radio resource control message includes:

The network side indicates, in the RRC message, the configured n Un for the relay station The minimum value N in the PUCCH resource index, and the remaining n-1 Un PUCCH resource indexes are: N+i*k, where i is an integer from 1 to n-1, and k is a fixed value set by the system.

Preferably, the foregoing method further has the following features: when the PUCCH format is PUCCH format 1, PUCCH format la, PUCCH format lb, channel selection mode PUCCH format 1, channel selection mode PUCCH format la or channel selection mode PUCCH format Lb, the network side indicates the Un PUCCH resource index by 11 bits in the RRC message, and the Un PUCCH resource index ranges from [0, 2047].

Preferably, the above method further has the following features: when the PUCCH format is PUCCH format

1. The PUCCH format la, the PUCCH format lb, the channel selection mode PUCCH format 1, the channel selection mode PUCCH format la or the channel selection mode PUCCH format lb, the network side indicates in the radio resource control message by 12 bits. The Un PUCCH resource index ranges from [0, 2304].

2. The PUCCH format 2a or the PUCCH format 2b, the network side indicates the Un PUCCH resource index by 10 bits in the RRC message, and the Un PUCCH resource index ranges from [0, 1023].

Preferably, the foregoing method further has the following features: when the PUCCH format is PUCCH format 2, PUCCH format 2a or PUCCH format 2b, the network side indicates the Un PUCCH resource index by 11 bits in the RRC message, The Un PUCCH resource index ranges from [0, 1185].

2. The PUCCH format 2a or the PUCCH format 2b, the network side indicates the Un PUCCH resource index by 10 bits in the RRC message, and the Un PUCCH resource index ranges from [0, 768].

The network side indicates the Un PUCCH resource index by 12 bits in the RRC message, and the Un PUCCH resource index ranges from [0, 2304].

Preferably, the foregoing method further has the following features: the Un PUCCH transmission mode is a single antenna Transmit mode, the PUCCH format is PUCCH format 1, PUCCH format la, PUCCH format lb, PUCCH format 2, PUCCH format 2a, PUCCH format 2b or PUCCH format

3, the network side configures one Un PUCCH resource index for the relay station.

Preferably, the foregoing method further has the following features: the Un PUCCH transmission mode is a single antenna transmission mode, and the PUCCH format is a PUCCH format la of a channel selection mode, where the network side configures two Un PUCCH resources for the relay station. index.

Preferably, the foregoing method further has the following features: the Un PUCCH transmission mode is a single antenna transmission mode, and the PUCCH format is a PUCCH format lb of a channel selection mode, and the network side configures the relay station with 2 or 3 or 4 Un PUCCH resource index.

Preferably, the foregoing method further has the following features: the Un PUCCH transmission mode is a multi-antenna transmission diversity mode, and the PUCCH format is PUCCH format 1, PUCCH format la, PUCCH format lb, PUCCH format 2, PUCCH format 2a, PUCCH format. 2b or PUCCH format 3, the network side configures P UnPUCCH resource indexes for the relay station, where P is the total number of antenna ports used in the multi-antenna transmission diversity mode.

Preferably, the foregoing method further has the following features: the Un PUCCH transmission mode is a multi-antenna transmission diversity mode, and the PUCCH format is a PUCCH format la of a channel selection mode, and the network side configures 2*P devices for the relay station. Un PUCCH resource index, where P is the total number of antenna ports used in the multi-antenna transmission diversity mode.

Preferably, the foregoing method further has the following features: the Un PUCCH transmission mode is a multi-antenna transmission diversity mode, and the PUCCH format is a PUCCH format lb of a channel selection mode, where the network side configures the relay station with 2*P or 3*P or 4*P Un PUCCH resource indexes, where P is the total number of antenna ports used in the multi-antenna transmission diversity mode.

Preferably, the foregoing method further has the following feature: The radio resource control message is a radio resource control connection relay station reconfiguration (RRCConnection RNReconfiguration) message.

Preferably, the foregoing method further has the following features: the Un PUCCH transmission mode is a multi-antenna transmission diversity mode, and the multi-antenna transmission diversity mode is a spatial orthogonal resource transmission diversity mode.

Preferably, the above method further has the following features: The total number of antenna ports used by the multi-antenna transmission diversity mode is 2. In order to solve the above problem, the present invention further provides a system for implementing a resource allocation of a physical link control channel (Un PUCCH) of a backhaul link, including: a configuration control entity and a relay station on the network side, where

The configuration control entity is configured to configure a corresponding n Un PUCCH resource indexes for the relay station by using a radio resource control message according to an Un PUCCH transmission mode configured by the relay station and a PUCCH format used by the relay station, where n is an integer greater than or equal to 1.

Preferably, the foregoing system further has the following features: the configuration control entity includes: a base station, a higher-level relay station, a cell cooperation entity, a gateway, a mobility management, an evolved universal terrestrial radio access network, an operation management and a maintenance manager. Any combination of one or more.

Preferably, the above system further has the following features: The radio resource control message is a radio resource control connection relay station reconfiguration (RRCConnection RNReconfiguration) message.

The present invention further provides a configuration control entity, configured to implement a backhaul link physical uplink control channel (Un PUCCH) resource allocation, where the configuration control entity includes a configuration module;

The configuration module is configured to: configure a corresponding n Un PUCCH resource indexes for the relay station by using a radio resource control message according to an Un PUCCH transmission mode configured by the relay station and a PUCCH format used by the relay station, where, Is an integer greater than or equal to 1.

Preferably, the foregoing configuration control entity is: any one or more of a base station, a higher-level relay station, a cell cooperation entity, a gateway, a mobility management, an evolved universal terrestrial radio access network, an operation management, and a maintenance manager. combination.

Preferably, in the configuration control entity, the radio resource control message is a radio resource control connection relay station reconfiguration message.

In summary, the foregoing technical solution provides a method and system for unPUCCH resource allocation, where the network side configures one or more backhaul link uplink control channel Un PUCCH resource indexes for the RN through RRC signaling, and indicates the Un PUCCH resource allocated by the RN. The RN uses the configured resources to perform effective transmission of uplink control information on the Backhaul Link.

BRIEF abstract

1 is a schematic structural diagram of a relay network; 2 is a schematic diagram of resource locations of a PUCCH in an LTE system

3 is a schematic diagram of a system for implementing Un PUCCH resource allocation according to an embodiment of the present invention;

4 is a flowchart of a method for allocating Un PUCCH resources according to an embodiment of the present invention; FIG. 5 is a schematic diagram of a continuous structure of n Un PUCCH resource indexes according to an embodiment of the present invention;

6 is a schematic structural diagram of configuring n Un PUCCH resource index intervals k according to an embodiment of the present invention;

Figure 7 is a schematic diagram showing the relationship between a configuration control entity and a relay station according to an embodiment of the present invention.

Preferred embodiment of the invention

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.

FIG. 3 is a schematic diagram of a system for implementing Un PUCCH resource allocation according to an embodiment of the present invention. As shown in FIG. 3, the method includes: a network-side configuration control entity and a relay station (RN), where

When n is greater than 1, the configured n Un PUCCH resource indexes are consecutive, or when n is greater than 1, the interval between the configured n Un PUCCH resource indexes is k, where k is an integer greater than or equal to 1. .

The configuration control entity includes: a base station (eg, an eNB), a higher-level relay station (referring to a direct upper-level RN or an indirect upper-level RN in a cascade system), a cell cooperative entity (MCE), and a gateway ( A combination of any one or more of GW), Mobility Management (MME), Evolved Universal Terrestrial Radio Access Network (EUTRAN), Operation Management and Maintenance (OAM) Manager. The radio resource control message is reconfigured for the radio resource control connection relay station, 3⁄4

(RRCConnectionRNReconfiguration message).

The Un PUCCH transmission mode used by the relay station may include: a single antenna transmission mode, and a multi-antenna transmission diversity mode.

Wherein, the single antenna transmission mode uses antenna port A; in the multi-antenna transmission diversity mode, the total number of antenna ports used is P, and the multiple antenna ports are respectively

Preferably, the multi-antenna transmission diversity mode is a Spatial Orthogonal Resource Transmit Diversity (SORTD) method.

Preferably, the total number of antenna ports used in the multi-antenna transmission diversity mode is P = 2.

FIG. 4 is a flowchart of a method for allocating Un PUCCH resources according to an embodiment of the present invention. As shown in FIG. 4, the method includes the following steps:

S10. The network side configures, according to the UnPUCCH transmission mode used by the relay station and the PUCCH format used by the relay station, the corresponding n Un PUCCH resource indexes for the relay station by using a radio resource control message, where n is greater than or equal to 1. Integer.

The n Un PUCCH resource indexes are consecutively configured, and specifically, the network side indicates, in the RRC message, the minimum value of the configured n Un PUCCH resource indexes in the RRC message. N, the remaining n-1 Un PUCCH resource indexes are: N+i, where i is an integer from 1 to n-1.

Wherein, when n is greater than 1, an interval k between the configured n Un PUCCH resource indexes, where k is an integer greater than or equal to 1.

Specifically, the network side indicates, in the RRC message, the configured n un PUCCH resource indexes for the relay station, and preferably indicates, for the relay station, a minimum value of the configured corresponding n Un PUCCH resource indexes. N, the remaining n-1 Un PUCCH resource indexes are: N+i*k, where i is an integer from 1 to n-1.

Where k is an integer greater than or equal to 1, the network side may indicate the k value in the RRC resource index by the Un PUCCH resource index interval, and k may also be a fixed value set by the system. Preferentially, k is equal to the total number of relay stations within the cell. In the following application examples, an eNB is used as a configuration control entity on the network side as an example. The eNB configures the indication RN to use the single-antenna or multi-antenna transmission diversity mode to transmit the Un PUCCH according to the RN capability, the backhaul link channel condition, and the network interference. The transmission diversity mode uses the spatial orthogonal resource transmission diversity SORTD mode.

The RN carries the SR information using PUCCH format 1, PUCCH format la or PUCCH format lb (PUCCH format 1/la/lb), and carries CQI/ using PUCCH format 2, PUCCH format 2a or PUCCH format 2b (PUCCH format 2/2a/2b). PMI/RI and/or ACK/NACK feedback information, PUCCH format la/lb or PUCCH format la/lb with channel selection or PUCCH format 3 is used to carry ACK/NACK feedback information.

Preferably, when the network side indicates the PUCCH format 1/la/lb or the PUCCH format 1/la/lb corresponding Un PUCCH resource index of the channel selection mode, the high-level signaling uses 11 bits to indicate the Un PUCCH resource index, Un The value of the PUCCH resource index is [0, 2047];

Preferably, the network side indicates that the RN indicates the PUCCH format 1/la/lb or the channel selection mode.

When the PUCCH format 1/la/lb corresponding Un PUCCH resource index is used, the high-level signaling uses 12 bits to indicate the Un PUCCH resource index, and the Un PUCCH resource index ranges from [0, 2304];

Preferably, when the network side indicates that the RN indicates the corresponding Un PUCCH resource index of the PUCCH format 2/2a/2b, the upper layer signaling uses 10 bits to indicate the Un PUCCH resource index, and the Un PUCCH resource index ranges from [0, 1023]. ;

Preferably, when the network side indicates that the RN indicates the corresponding Un PUCCH resource index of the PUCCH format 2/2a/2b, the upper layer signaling uses 11 bits to indicate the Un PUCCH resource index, and the Un PUCCH resource index ranges from [0, 1185]. ;

Preferably, when the network side indicates that the RN indicates the corresponding Un PUCCH resource index of the PUCCH format 2/2a/2b, the upper layer signaling uses 10 bits to indicate the Un PUCCH resource index, and the Un PUCCH resource index ranges from [0, 768]. ;

Preferably, when the network side indicates that the RN indicates the corresponding Un PUCCH resource index of the PUCCH format 3, the high-level signaling uses 12 bits to indicate the Un PUCCH resource index, and the Un PUCCH resource index. The value range is [0, 2304].

The RN carries the ACK/NACK feedback information according to the eNB configuration or the ACK/NACK information size generated by the RN using the corresponding PUCCH format. The factors affecting the ACK/NACK information generated by the RN include: the eNB transmits the PDSCH transmission mode to the RN, and the Un downlink subframe and the Un uplink subframe configuration ratio.

When the RN transmits the Un PUCCH in the multi-antenna transmission diversity mode, the eNB needs to configure the corresponding Un PUCCH resource index (Index) for each antenna, that is, each antenna port ρ. , ..., ρ _Ρ _ points

The other Un PUCCH resource index is expressed as, where = [1, 2, 3] corresponds to PUCCH format 1/1 a/lb, PUCCH format 2/2a/2b, and PUCCH format 3, t = [0X. .., P - \] , P is the total number of antenna ports. When the eNB configures the Un PUCCH resource index allocated by the RN through the high layer signaling configuration, the eNB may configure the Un PUCCH Index according to the Un PUCCH resource amount required for the multi-antenna transmission diversity mode, when the RN is configured to use the single antenna transmission mode. Use only the resources corresponding to P = P ₀ in the configured multiple Un PUCCH Index, ie "3⁄4£c ) = = [1, 2, 3]. When the RN is configured to use the single antenna transmission mode, if RN When the used PUCCH format is PUCCH format 1/1 a/lb, PUCCH format 2/2a/2b or PUCCH format 3, the eNB configures one Un PUCCH resource index for the RN, and the first embodiment to the third embodiment will be described.

Example 1

The eNB configures the RN to transmit the Un PUCCH in the single-antenna transmission mode, and the eNB transmits the PDSCH to the RN in a single-stream manner on the Un downlink (DL) subframe, and the RN uses the PUCCH format la bearer to report the ACK/NACK feedback information of the PDSCH to the eNB. Then, the eNB configures one PUCCH Index for the RN, and indicates the configured Un PUCCH resource.

Specifically, the eNB indicates the configured Un PUCCH Index to the RN by 11 bits in the high layer signaling, and the value range of uicH ^{o )} = ^N ^ N is [0, 2047]. The RN processes the generated ACK/NACK feedback information in PUCCH format 1 a and maps it to the resource corresponding to the allocated Un PUCCH Index, and transmits the uplink to the eNB.

Example 2: The eNB configures the RN to transmit the Un PUCCH in a single antenna transmission mode, and the eNB transmits the PDSCH to the RN in a single stream manner on the Un DL subframe. The Un DL/UL (uplink) subframe configuration ratio is 2:1, and the RN is in an Un UL. The ACK/NACK feedback information of the two Un DL sub-frame PDSCH transmissions is to be fed back on the subframe, and the RN uses the PUCCH format lb to carry the ACK/NACK feedback information for the PDSCH to the eNB, and the eNB configures one PUCCH Index for the RN, indicating The configured Un PUCCH resource.

Specifically, the eNB indicates the configured Un PUCCH Index to the RN by 11 bits in the high layer signaling.

= W, N has a value range of [0, 2047]. The RN processes the generated ACK/NACK feedback information in PUCCH format lb and maps it to the resource corresponding to the allocated Un PUCCH Index, and transmits the uplink to the eNB.

Example 3:

The eNB configures the RN to transmit the Un PUCCH in a single antenna transmission mode, and the eNB transmits the PDSCH to the RN in a dual stream manner on the Un DL subframe, and the RN needs to feed back ACK/NACK of the 3 Un DL subframes PDSCH transmission on one Un UL subframe. In the feedback information, the RN uses the PUCCH format 3 to transmit the ACK/NACK feedback information of the PDSCH to the eNB, and the eNB configures one PUCCH Index for the RN to indicate the configured Un PUCCH resource.

Specifically, the eNB indicates the configured Un PUCCH Index to the RN by 12 bits in the high layer signaling, "iiiS?) = W, and the value range of N is [0, 2304]. The RN will generate the generated ACK/NACK feedback information. After processing in PUCCH format 3, it is mapped to the resource corresponding to the allocated Un PUCCH Index, and is uplinked to the eNB.

When the RN is configured to use the single-antenna transmission mode, if the PUCCH format used by the RN is the PUCCH format la of the channel selection mode, the eNB configures two Un PUCCH resource indexes for the RN, for example, Embodiment 4.

Example 4:

The eNB configures the RN to transmit the Un PUCCH in a single antenna transmission mode, and the eNB transmits the PDSCH to the RN in a dual stream manner on the Un downlink (DL) subframe, and the RN uses the PUCCH format la of the channel selection mode to carry the ACK/NACK feedback information to the PDSCH. Reporting to the eNB, the eNB is the RN. Configure two PUCCH indexes to indicate the configured Un PUCCH resources.

Specifically, the eNB indicates the configured first Un PUCCH Index to the RN by using 1 1 bits in the high layer signaling, υί CH, O = ^Ν , Ν, the value range is [0, 2047] ₀ eNB is configured continuously for the RN The 2 Un PUCCH resource indexes, the second Un PUCCH Index, = ^ + 1. The RN processes the generated ACK/NACK feedback information in PUCCH format la and maps it to the corresponding resource corresponding to the Un PUCCH index according to the channel selection rule, and transmits the uplink to the eNB.

When the RN is configured to use the single antenna transmission mode, if the PUCCH format used by the RN is the PUCCH format lb of the channel selection mode, the eNB configures 2 or 3 or 4 Un PUCCH resource indexes for the RN, for example, Embodiments 5 to 8 .

Example 5

The eNB configures the RN to transmit the Un PUCCH in a single antenna transmission mode, and the eNB transmits the PDSCH to the RN in a single stream manner on the Un DL subframe, the Un DL/UL subframe configuration ratio is 2:1, and the RN is on an Un UL subframe. The ACK/NACK feedback information of the two Un DL subframe PDSCH transmissions needs to be fed back, and the RN uses the PUCCH format lb of the channel selection scheme to report the ACK/NACK feedback information of the PDSCH to the eNB, and the eNB configures the RN as two intervals of k. The PUCCH Index, Un PUCCH resource index interval k is indicated by 3 bits, for example, = 5 .

Specifically, the eNB configures the Un PUCCH resource with the smallest index to the RN in the high-layer signaling with a distance of 1 1 bits, and the value range of N is [0, 2047], and the second Un PUCCH resource index Un PUCCH Index = N + 5 _{0 The} RN processes the generated ACK/NACK feedback information according to the PUCCH format lb of the channel selection scheme, and then maps it to the Un PUCCH resource corresponding to the corresponding Un PUCCH index according to the channel selection rule, and transmits the uplink to the eNB.

Example 6:

The eNB configures the RN to transmit the Un PUCCH in a single antenna transmission mode, and the eNB transmits the PDSCH to the RN in a single stream manner on the Un DL subframe. The Un DL/UL subframe configuration ratio is 3:1, and the RN is on an Un UL subframe. The ACK/NACK feedback information of the three Un DL subframe PDSCH transmissions needs to be fed back. The RN uses the PUCCH format lb of the channel selection scheme to report the ACK/NACK feedback information of the PDSCH to the eNB, and the eNB configures the RN for three intervals of k. PUCCH Index, k is a fixed value of the system, for example, := 10 .

Specifically, the eNB configures the Un PUCCH resource with the smallest index in the high-level signaling with 11 bits to the RN, and the value range of N is [0, 2047], and the remaining two Un PUCCH resource indexes are respectively Un PUCCH. Index

+ ¹⁰ , "Si = W + ² 0 . The RN processes the generated ACK/NACK feedback information according to the PUCCH format lb of the channel selection mode, and then maps to the Un PUCCH resource corresponding to the corresponding Un PUCCH index according to the channel selection rule, to the eNB. Upstream launch.

Example 7

The eNB configures the RN to transmit the Un PUCCH in a single antenna transmission mode, and the eNB transmits the PDSCH to the RN in a dual stream manner on the Un DL subframe. The Un DL/UL subframe configuration ratio is 2:1, and the RN needs to be on an Un UL subframe. The ACK/NACK feedback information of the two Un DL subframe PDSCH transmissions is fed back, and the RN uses the PUCCH format lb of the channel selection scheme to report the ACK/NACK feedback information of the PDSCH to the eNB, and the eNB configures four consecutive PUCCH indexes for the RN. , indicates the configured Un PUCCH resource.

Specifically, the eNB indicates to the RN that the resource index is the smallest with 11 bits in the high layer signaling.

The PUCCH resource index = ^ , the value range of N is [0, 2047], and the eNB configures a continuous Un PUCCH resource index for the RN, and the remaining three Un PUCCH resource indexes are respectively Un PUCCH Index S = W + l , n^ = N + 2 , _c = _c = + 3, the resource location is shown in Figure 5. The RN processes the generated ACK/NACK feedback information in the PUCCH format lb of the channel selection mode, and then maps it to the Un PUCCH resource corresponding to the corresponding Un PUCCH index according to the channel selection rule, and transmits the uplink to the eNB.

Example 8

The eNB configures the RN to transmit the Un PUCCH in a single antenna mode, and the eNB transmits the PDSCH to the RN in a single stream manner on the Un DL subframe. The Un DL/UL subframe configuration ratio is 4:1, and the RN needs to be on an Un UL subframe. The ACK/NACK feedback information of the four Un DL subframe PDSCH transmissions is fed back, and the RN uses the PUCCH format lb of the channel selection scheme to report the ACK/NACK feedback information of the PDSCH to the eNB, and the eNB configures four intervals of k for the RN. The PUCCH Index indicates the configured Un PUCCH resource, and the Un PUCCH resource index interval k is indicated by 2 bits, for example, = 4.

Specifically, the eNB configures the Un PUCCH resource with the smallest index in the high-level signaling with 11 bits to the RN. The PUCCH, 0 = ^v , and the value range of N is [0, 2047], and the remaining three Un PUCCH resources are Un PUCCH Index 3⁄4ΐ = ^ + ⁴ , uS3⁄42 = N + S ,

= W + 1 ² . The RN processes the generated ACK/NACK feedback information in the PUCCH format lb of the channel selection mode, and then maps it to the Un PUCCH resource corresponding to the corresponding Un PUCCH index according to the channel selection rule, and transmits the uplink to the eNB.

When the RN is configured to use the multi-antenna transmission diversity mode, if the PUCCH format used by the RN is PUCCH format 1/1 a/lb, PUCCH format 2/2a/2b or PUCCH format 3, the eNB configures P Un PUCCHs for the RN. Resource index, where P is the total number of antenna ports used in the multi-antenna transmission diversity mode, for example, Embodiment 9.

Embodiment 9 (In this embodiment, P is 2):

The eNB configures the RN to transmit the Un PUCCH in the two-antenna transmit diversity mode, and the eNB transmits the PDSCH to the RN in a single-stream manner on the Un DL subframe, and the RN uses the PUCCH format 1 a bearer to report the ACK/NACK feedback information of the PDSCH to the eNB. The eNB configures two consecutive PUCCH Indexes for the RN.

Specifically, the eNB indicates, in the high layer signaling, the Un PUCCH Index configured as the antenna port P0 to the RN by 12 bits.

^{= N} , N is in the range [0 , 2304] , then the un PUCCH Index ucc3⁄4 ^} = ^ + 1 corresponding to the antenna port PI. After the RN processes the generated ACK/NACK feedback information in PUCCH format la, the two antennas are respectively mapped to the UnPUCCH resources corresponding to the allocated Un PUCCH index, and are uplinked to the eNB.

When the RN is configured to use the multi-antenna transmission diversity mode, if the PUCCH format used by the RN is the PUCCH format la of the channel selection mode, the eNB configures 2*P Un PUCCH resource indexes for the RN, where P is multi-antenna transmission diversity. The total number of antenna ports used by the mode, for example, Embodiment 10. Embodiment 10 (In this embodiment, P is 2):

The eNB configures the RN to transmit the Un PUCCH in a two-antenna transmit diversity mode, and the eNB transmits the PDSCH to the RN in a single stream manner on the Un DL subframe. The Un DL/UL subframe configuration ratio is 2:1, and the RN is on an Un UL subframe. The ACK/NACK feedback information of the two Un DL subframe PDSCH transmissions needs to be fed back, and the RN uses the PUCCH format la bearer of the channel selection to report the ACK/NACK feedback information of the PDSCH to the eNB, and the eNB configures four intervals of k for the RN. PUCCH Index, Un PUCCH resource index interval k is indicated by 3 bits, for example, k = 6 .

Specifically, the eNB indicates, in the high-layer signaling, the un-indexed Un PUCCH resource with l lbits.

^PUCCH,?) ^{= N} , Ν has a value range of [0, 2047], then the remaining three Un PUCCH resource indexes are Un PUCCH Index S, o = N + 6 , «pucCH°j ⁼ ^ + ¹² ,

= + 18, the resource location is shown in Figure 6. The RN processes the generated ACK/NACK feedback information in the PUCCH format la of the channel selection mode, and the two antennas are mapped to the UnPUCCH resource corresponding to the corresponding Un PUCCH index according to the channel selection rule, and are uplinked to the eNB.

When the RN is configured to use the multi-antenna transmission diversity mode, if the PUCCH format used by the RN is the PUCCH format lb of the channel selection mode, the eNB configures 2*P or 3*P or 4*P Un PUCCH resource indexes for the RN. Where P is the total number of antenna ports used in the multi-antenna transmission diversity mode. The following is an example of configuring 4*P Un PUCCH resource indexes, as in Embodiment 11.

Embodiment 11 (In this embodiment, P is 2):

The eNB configures the RN to transmit the Un PUCCH in a two-antenna transmit diversity mode, and the eNB transmits the PDSCH to the RN in a dual-stream manner on the Un DL subframe. The Un DL/UL subframe configuration ratio is 2:1, and the RN needs to be on an Un UL subframe. The ACK/NACK feedback information of the two Un DL subframe PDSCH transmissions is fed back, and the RN uses the PUCCH format lb of the channel selection to transmit the ACK/NACK feedback information of the PDSCH to the eNB, and the eNB configures eight PUCCHs with intervals of k for the RN. Index, Un PUCCH resource index interval k is indicated by 2 bits, k = 3 .

Specifically, the eNB indicates, in the high layer signaling, that the index of the Un PUCCH resource «ρυ?3⁄4ο ^Ν最小 is the smallest index, and the value of the Ν is [0, 2047], and the remaining Un PUCCH resource index points. Don't be £). =W + 3, n^ =N + 6, ..... , f _c = _c = W + 21. The generated ACK/NACK feedback information is processed by the PUCCH format lb of the channel selection method, and the two antennas are respectively mapped to the UnPUCCH resource corresponding to the allocated corresponding UnPUCCH index according to the channel selection rule, and are uplinked to the eNB.

The high layer signaling in this embodiment mainly refers to RRC signaling.

The present invention further provides a configuration control entity, which is configured to implement a backhaul link physical uplink control channel (UnPUCCH) resource allocation. As shown in FIG. 7, the configuration control entity includes a configuration module, where:

The configuration module is configured to: configure, according to a radio resource control message, a corresponding n UnPUCCH resource indexes by using a radio resource control message according to an Un PUCCH transmission mode configured for the relay station and a PUCCH format used by the relay station, where n is greater than or equal to An integer of 1.

Preferably, the foregoing configuration control entity further includes: any one or more of a base station, a higher-level relay station, a cell cooperation entity, a gateway, a mobility management, an evolved universal terrestrial radio access network, an operation management, and a maintenance manager. The combination.

It should be noted that the features in the embodiments and the embodiments of the present application may be arbitrarily combined with each other without conflict.

The above is only a preferred embodiment of the present invention, and of course, the present invention may be embodied in various other embodiments without departing from the spirit and scope of the present invention. Various changes and modifications may be made without departing from the scope of the appended claims.

Industrial applicability

The foregoing technical solution provides a method and system for UnPUCCH resource allocation, to configure Un PUCCH resources by using RRC signaling. In the method and system, the network side passes RRC signaling The RN configures one or more backhaul link uplink control channel Un PUCCH resource indexes, and indicates the Un PUCCH resources allocated by the RN. The RN performs effective transmission of uplink control information on the Backhaul Link by using the configured resources.

Claims

Claim

A method for resource allocation of a physical link control channel (Un PUCCH) of a backhaul link, including:

2. The method of claim 1, wherein: when n is greater than 1, the configured n Un PUCCH resource indexes are consecutive.

3. The method according to claim 2, wherein: the step of configuring, by the network side, the corresponding n Un PUCCH resource indexes for the relay station by using the radio resource control message comprises:

The network side indicates, in the RRC message, a minimum value N of the configured n Un PUCCH resource indexes for the relay station, and the remaining n-1 Un PUCCH resource indexes are: N+i, Where i is an integer from 1 to n-1 in order.

4. The method according to claim 1, wherein: when n is greater than 1, an interval k between the n Un PUCCH resource indexes configured, wherein k is an integer greater than or equal to 1.

5. The method according to claim 4, wherein: the step of configuring, by the network side, the corresponding n Un PUCCH resource indexes for the relay station by using the radio resource control message comprises:

6. The method of claim 5, wherein: k is equal to the total number of relay stations within the cell.

The method of claim 4, wherein: the step of configuring, by the network side, the corresponding n Un PUCCH resource indexes for the relay station by using the radio resource control message comprises:

The network side indicates, in the RRC message, the configured n Un for the relay station

The minimum value N in the PUCCH resource index, and the remaining n-1 Un PUCCH resource indexes are: N+i*k, where i is an integer from 1 to n-1, and k is a fixed value set by the system.

The method according to any one of claims 3, 5, and 7, wherein: when the PUCCH format is PUCCH format 1, PUCCH format la, PUCCH format lb, channel selection mode PUCCH format 1, channel selection mode In the PUCCH format la or the PUCCH format lb of the channel selection mode, the network side indicates the Un PUCCH resource index by 11 bits in the RRC message, and the Un PUCCH resource index ranges from [0, 2047] .

The method according to any one of claims 3, 5, or 7, wherein, in the step of indicating, by the network side, the Un PUCCH resource index in the radio resource control message, the relay station indicates: The PUCCH format is PUCCH format 1, PUCCH format la, PUCCH format lb, channel selection mode PUCCH format 1, channel selection mode PUCCH format la or channel selection mode PUCCH format lb, and the network side is in the radio resource control The Un PUCCH resource index is indicated by 12 bits in the message, and the Un PUCCH resource index has a value range of [0, 2304].

The method according to any one of claims 3, 5, or 7, wherein, in the step of indicating, by the network side, the Un PUCCH resource index in the radio resource control message, the relay station indicates: The PUCCH format is a PUCCH format 2, a PUCCH format 2a, or a PUCCH format 2b, and the network side indicates the Un PUCCH resource index by 10 bits in the RRC message, and the Un PUCCH resource index takes a value range of [ 0, 1023].

The method according to any one of claims 3, 5, or 7, wherein, in the step of indicating, by the network side, the Un PUCCH resource index in the radio resource control message, the relay station indicates: The PUCCH format is a PUCCH format 2, a PUCCH format 2a, or a PUCCH format 2b, and the network side indicates the Un PUCCH resource index by 11 bits in the RRC message, and the Un PUCCH resource index takes a value range of [ 0, 1185].

The method according to any one of claims 3, 5, and 7, wherein, in the step of indicating, by the network side, the Un PUCCH resource index in the radio resource control message, the relay station indicates: The PUCCH format is a PUCCH format 2, a PUCCH format 2a, or a PUCCH format 2b, and the network side indicates the Un PUCCH resource index by 10 bits in the RRC message, and the Un PUCCH resource index takes a value range of [ 0, 768].

The method according to any one of claims 3, 5, or 7, wherein the step of indicating the Un PUCCH resource index for the relay station in the radio resource control message in the network side If the PUCCH format is the PUCCH format 3, the network side indicates the Un PUCCH resource index by 12 bits in the RRC message, and the Un PUCCH resource index ranges from [0, 2304] .

The method according to claim 1, wherein, in the step of configuring, by the network side, the Un PUCCH resource index for the relay station: if the Un PUCCH transmission mode is a single antenna transmission mode, the PUCCH format For the PUCCH format 1, the PUCCH format la, the PUCCH format lb, the PUCCH format 2, the PUCCH format 2a, the PUCCH format 2b, or the PUCCH format 3, the network side configures one Un PUCCH resource index for the relay station.

The method according to claim 1, wherein in the step of configuring, by the network side, the Un PUCCH resource index for the relay station, the Un PUCCH transmission mode is a single antenna transmission mode, and the PUCCH format is In the PUCCH format la of the channel selection mode, the network side configures two Un PUCCH resource indexes for the relay station.

The method according to claim 1, wherein in the step of configuring, by the network side, the Un PUCCH resource index for the relay station, the Un PUCCH transmission mode is a single antenna transmission mode, and the PUCCH format is In the PUCCH format lb of the channel selection mode, the network side configures 2 or 3 or 4 Un PUCCH resource indexes for the relay station.

The method according to claim 1, wherein in the step of configuring, by the network side, the Un PUCCH resource index for the relay station, the Un PUCCH transmission mode is a multi-antenna transmission diversity mode, and the PUCCH format For the PUCCH format 1, the PUCCH format la, the PUCCH format lb, the PUCCH format 2, the PUCCH format 2a, the PUCCH format 2b, or the PUCCH format 3, the network side configures P Un PUCCH resource indexes for the relay station, where P is The total number of antenna ports used by the multi-antenna transmit diversity mode.

The method according to claim 1, wherein in the step of configuring, by the network side, the Un PUCCH resource index for the relay station, the Un PUCCH transmission mode is a multi-antenna transmission diversity mode, and the PUCCH format For the PUCCH format la of the channel selection mode, the network side configures 2*P Un PUCCH resource indexes for the relay station, where P is the total number of antenna ports used in the multi-antenna transmission diversity mode.

The method according to claim 1, wherein in the step of configuring, by the network side, the Un PUCCH resource index for the relay station, the Un PUCCH transmission mode is multi-antenna transmission In the diversity mode, the PUCCH format is the PUCCH format lb of the channel selection mode, and the network side configures the relay station with 2*P or 3*P or 4*P Un PUCCH resource indexes, where P is multi-antenna transmission The total number of antenna ports used by the diversity mode.

20. The method of claim 1, wherein: the radio resource control message is a radio resource control connection relay station reconfiguration message.

The method according to claim 1, wherein: the Un PUCCH transmission mode is a multi-antenna transmission diversity mode, and the multi-antenna transmission diversity mode is a spatial orthogonal resource transmission diversity mode.

22. The method of claim 21, wherein: the total number of antenna ports used by the multi-antenna transmission diversity mode is two.

A system for realizing a resource allocation of a physical uplink control channel (Un PUCCH) of a backhaul link, comprising: a configuration control entity and a relay station on the network side, where

The configuration control entity is configured to: configure a corresponding n Un PUCCH resource indexes for the relay station by using a radio resource control message according to an Un PUCCH transmission mode configured by the relay station and a PUCCH format used by the relay station, where n is an integer greater than or equal to 1.

24. The system of claim 23, wherein: the configuration control entity is: a base station, a higher level relay station, a cell cooperation entity, a gateway, a mobility management, an evolved universal terrestrial radio access network, operation management, and maintenance. A combination of any one or more of the managers.

25. The system of claim 23, wherein: the radio resource control message is a radio resource control connection relay station reconfiguration cancellation packet.

26. A configuration control entity, configured to implement a physical uplink control channel of the backhaul link (Un

PUCCH) resource allocation, the configuration control entity includes a configuration module;

27. The configuration control entity of claim 26, which is: a base station, a higher level relay station, a cell cooperation entity, a gateway, a mobility management, an evolved universal terrestrial radio access network, an operation management and maintenance manager. Any combination of one or more.

28. The configuration control entity of claim 26, wherein the radio resource control message Reconfigure the relay reconfiguration message for the radio resource control.