WO2011035673A1

WO2011035673A1 - Method and device for uplink data transmission based on relay station

Info

Publication number: WO2011035673A1
Application number: PCT/CN2010/076321
Authority: WO
Inventors: 梁枫; 毕峰; 杨瑾; 袁明; 吴栓栓; 李岩
Original assignee: 中兴通讯股份有限公司
Priority date: 2009-09-27
Filing date: 2010-08-24
Publication date: 2011-03-31
Also published as: CN102035592A; CN102035592B

Abstract

A method and device for uplink data transmission are disclosed by the invention. In above-mentioned method, a relay station receives uplink data and transmits uplink data with uplink relay sub-frames; wherein, all or part of the uplink relay sub-frames are configured according to the sounding reference signal (SRS) sub-frames of user and guard intervals are set in them, or, the user uplink sub-frames corresponding to all or part of the relay uplink sub-frames are configured as SRS sub-frames, and guard intervals are set in all or part of the uplink relay sub-frames. According to the technique scheme of the invention, omitting is avoided when data signals are received, and signal combination with the user is achieved by the relay station when it is performing uplink transmission.

Description

The present invention relates to the field of communications, and in particular to a method and apparatus for uplink data transmission based on a relay station. BACKGROUND OF THE INVENTION As an emerging technology, relay technology has attracted more and more attention, and is regarded as a key technology of mobile communication of Beyond Third Generation/The Fourth Generation (3G/4G). Since future wireless communication or cellular systems require increased coverage and support for higher rate transmission, new challenges are placed on 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. As the distance is shortened, 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 month. Figure 1 is a schematic diagram of a trunk network architecture. As shown in FIG. 1 , in the relay network, including: a base station, a relay station, and a user participating in the monthly service, the link between the user participating in the monthly service and the relay station of the relay station is called an access link (Access Link). ), the link between the relay station and the base station is called the backhaul link.

(Backhaul Link), the link between the user participating in the service and the base station is called a direct transmission link.

(Direct Link). For in-band relaying, the backhaul link, the access link, and the direct transmission link all operate on the same spectrum. In general, when the relay station performs uplink transmission to the base station, if the relay station is also receiving uplink transmission from the user, it will cause interference between the receiving end and the transmitting end of the relay station, thus causing serious communication quality. deterioration. Therefore, for in-band relay, it is specified that uplink transmission cannot be performed simultaneously on the backhaul link and the access link, and when the relay station switches between the uplink transmission state and the uplink reception state, a certain length of conversion time is required as the guard interval. (Guard Period, GP for short), the relay station does not perform any uplink transmission and reception on the GP to avoid the generation of the transmitter and receiver terminals during the conversion process. Therefore, the relay uplink subframes are classified into two types: a subframe in which the relay station performs uplink transmission is called an uplink backhaul backhaul subframe, and a subframe in which the relay station performs uplink reception is called an uplink access Access subframe, when these two seeds are used. frame When adjacent, the guard interval GP needs to be set between the subframes, and the relay uplink subframe is configured in the uplink subframe of the user, and corresponds to the uplink subframe of the user. For details, refer to FIG. 2 . 2 is a schematic diagram of a configuration of a relay uplink subframe. As shown in Figure 2, configure subframes #0, #1, #5, and #6 as uplink Backhaul subframes, and configure #2, #3, #4, #7, #8, and #9 as uplink access sub-frames. frame. The proposed method is as follows: A time slot of a certain length is reserved at the beginning and the end of the uplink Backhaul subframe as a transition interval between the received transmission and the transmission to the reception, and the time domain may be further biased for the subframe. Move to reduce the length of the transition interval. However, the method has the following disadvantages: the GP is reserved at the front end of the subframe, and the uplink transmission of the relay station cannot be combined with the normal uplink transmission of the user, and the offset of the subframe may cause overlapping of the adjacent uplink subframes of the user. Bring data loss. SUMMARY OF THE INVENTION In the related art, the GP is reserved in the front end of the subframe, and the uplink transmission of the relay station cannot be combined with the normal uplink transmission of the user, and the offset of the subframe may cause overlapping of the adjacent uplink subframes of the user. The present invention has been made in view of the problem of data loss. To this end, it is a primary object of the present invention to provide an improved relay station-based uplink data transmission method and apparatus to solve at least one of the above problems. According to an aspect of the present invention, a relay station based uplink data transmission method is provided. The relay station-based uplink data transmission method according to the present invention includes: the relay station performs uplink data reception and uplink data transmission by using an uplink relay subframe; wherein all or part of the uplink relay subframe is based on a user's measurement reference signal (Sounding Reference Signal, referred to as The SRS is configured to set the guard interval, or the user uplink subframe corresponding to all or part of the relay uplink subframe is configured as an SRS subframe, and all or part of the uplink relay subframes are set with a guard interval. According to another aspect of the present invention, an uplink data transmission apparatus based on a relay station is provided. The relay station-based uplink data transmission apparatus according to the present invention includes: a transmission unit, configured to perform uplink data reception and uplink data transmission by relaying an uplink subframe; wherein, all or part of the relay uplink subframe is based on a measurement reference signal SRS of the user The subframe is configured and the guard interval is set. Alternatively, the user uplink subframe corresponding to all or part of the relay uplink subframe is configured as an SRS subframe, and all or part of the relay uplink subframes are set to a guard interval. According to the present invention, when the relay station performs uplink data reception and uplink data transmission by using the relay uplink subframe, part or all of the uplink relay subframes are configured on the SRS subframe of the user, or corresponding to some or all of the uplink relay subframes. The user uplink subframe is configured as an SRS subframe, and the guard interval is set for the relay according to the situation. The GP is reserved in the front end of the subframe in the related art, and the uplink transmission of the relay station cannot be combined with the normal uplink transmission of the user, and the offset of the subframe may cause overlapping of the adjacent uplink subframes of the user, which brings data. The problem of loss, in turn, can avoid omission when receiving the data signal, and realize the signal combining with the user when the relay station transmits in the uplink. Other features and advantages of the invention will be set forth in the description which follows, and The objectives and other advantages of the invention will be realized and attained by the <RTI BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, In the drawings: FIG. 1 is a schematic diagram of a trunk network architecture; FIG. 2 is a schematic diagram of a relay uplink subframe configuration; FIG. 3 is a schematic diagram of a first uplink access subframe structure according to an embodiment of the present invention; FIG. 5 is a schematic structural diagram of a first uplink Backhaul subframe according to an embodiment of the present invention; FIG. 6 is a schematic diagram of a first uplink Backhaul subframe according to an embodiment of the present invention; FIG. 7 is a schematic diagram of a user uplink SRS subframe configuration according to the first embodiment of the present invention; FIG. 8 is a schematic diagram of a relay uplink SRS subframe configuration and a subframe thereof according to the first embodiment of the present invention; FIG. 9 is a schematic diagram of a configuration of a user uplink SRS subframe according to Embodiment 2 of the present invention; FIG. 10 is a schematic diagram of a relay uplink SRS subframe configuration and a subframe structure thereof according to Embodiment 2 of the present invention; FIG. 11 is a schematic diagram of a configuration of a relay uplink subframe according to Embodiment 3 of the present invention; FIG. 12 is a schematic diagram of a user uplink SRS subframe configuration, a relay uplink subframe configuration, and a subframe structure thereof according to Embodiment 3 of the present invention; FIG. 13 is a schematic diagram of a configuration of a relay uplink subframe according to Embodiment 4 of the present invention; FIG. 14 is a schematic diagram of a user uplink SRS subframe configuration, a relay uplink subframe configuration, and a subframe structure thereof according to Embodiment 4 of the present invention; FIG. 15 is a structural block diagram of a relay station-based uplink data transmission apparatus according to an embodiment of the present invention. The embodiments of the present invention provide an uplink data transmission method and device based on a relay station, and the design idea is as follows: When the relay station performs uplink data reception and uplink data transmission through an uplink relay subframe, the existing SRS subframe structure is utilized. To implement radio frequency conversion between the uplink transmitting and receiving of the relay station, because the user does not transmit the data signal on the last single carrier frequency division multiple access SC-FDMA symbol of the SRS subframe, so if the relay station is in the uplink access subframe The use of this symbol as a guard interval will not miss the reception of the data signal, and if the relay station uses this symbol as a guard interval in the uplink Backhaul subframe, the relay station can perform signal combining with the user when transmitting in the uplink, and is compatible with the old version of the user. , maintain a normal timing relationship, so as not to cause data loss due to overlapping of adjacent subframes. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. According to an embodiment of the present invention, an uplink data transmission method based on a relay station is first provided. The relay station-based uplink data transmission method according to the embodiment of the present invention includes the following processing: the relay station performs uplink data reception and uplink data transmission by using an uplink relay subframe; wherein all or part of the uplink relay subframe is configured according to the user's SRS subframe. And setting a guard interval, or configuring a user uplink subframe corresponding to all or part of the relay uplink subframe as an SRS subframe, and setting a guard interval for all or part of the uplink relay subframe. The uplink relay subframe in which the relay station performs uplink data transmission includes: an uplink Backhaul subframe; the uplink relay subframe in which the relay station performs uplink data reception includes: an uplink access subframe. Preferably, before the relay station performs uplink data reception and uplink data transmission by relaying the uplink subframe, it needs to be configured in advance.

The configuration of the uplink access subframes is as follows: All or part of the uplink access subframes are configured on the SRS subframe of the user, or all uplink subframes corresponding to all or part of the uplink access subframes are configured as SRS sub-frames. frame.

For the uplink access subframe, if the uplink access subframe is adjacent to the uplink Backhaul subframe, the guard interval needs to be set to implement radio frequency conversion between the uplink transmitting and receiving of the relay station. Preferably, the guard interval is set as follows. :

(1) For each uplink access subframe configured in the uplink access subframe, if the previous neighboring subframe of the uplink access subframe is an uplink Backhaul subframe, ^! The last SC-FDMA symbol of the upstream Backhaul subframe is set to the guard interval.

(2) For each uplink access subframe configured in the uplink access subframe, if the next destination 4p subframe of the uplink access subframe is an uplink Backhaul subframe, then "the last SC- of the uplink Access subframe" The FDMA symbol is set to the guard interval, or the first SC-FDMA symbol of the uplink Backhaul subframe is set as the guard interval. For details, refer to FIG. 3 and FIG. 4, as shown in the figure, in order not to miss the reception of the data signal, The first SC-FDMA symbol of the uplink Access subframe cannot be set to the guard interval, and the last SC-FDMA symbol of the previous uplink Backhaul subframe of the uplink Access subframe can be set as the guard interval. The last SC-FDMA symbol of the subframe is set to the guard interval, or the first SC-FDMA symbol of the uplink Backhaul subframe is set as the guard interval. All or part of the uplink Backhaul subframe is configured in the user's SRS subframe. Or, the user uplink subframe corresponding to all or part of the uplink Backhaul subframe is configured as an SRS subframe. For the uplink Backhaul subframe, - processing as follows: all or part of the uplink sub-frame disposed on Backhaul SRS subframe of users, or all or part of the uplink subframe Backhaul uplink subframe corresponding to the user configured SRS subframe.

40 pairs of uplink Backhaul subframes, when the uplink Backhaul subframe and the uplink Access subframe When adjacent, a guard interval needs to be set to implement radio frequency conversion between the uplink transmission and reception of the relay station. Preferably, the protection interval is set as follows:

(1) For each uplink Backhaul subframe configured in the uplink Backhaul subframe, if the next adjacent subframe of the uplink Backhaul subframe is an uplink Access subframe, the last SC-FDMA of the uplink Backhaul subframe is The symbol is set to the guard interval.

(2) For each uplink Backhaul subframe configured in the uplink Backhaul subframe, if the previous neighboring subframe of the uplink Backhaul subframe is an uplink Access subframe, the last SC-FDMA of the uplink Access subframe is The symbol is set to the guard interval, or the first SC-FDMA symbol of the uplink Backhaul subframe is set as the guard interval. For details, refer to FIG. 5 and FIG. 6. As shown in the figure, when the uplink Backhaul subframe is adjacent to the uplink Access subframe, the first SC-FDMA symbol of the uplink Backhaul subframe may be set as a guard interval, or may be set. The last SC-FDMA symbol of the uplink Backhaul subframe is a guard interval, or both the first SC-FDMA symbol and the last SC-FDMA symbol are set as guard intervals. The specific setting method can be determined according to the specific situation. FIG. 7 is a schematic diagram of a configuration of a user uplink SRS subframe according to Embodiment 1 of the present invention. As shown in FIG. 7, in the FDD mode, the SRS subframe is configured as mode 8, that is, the user uplink subframes #2, #3, #7, and #8 are SRS subframes. In the existing Long Term Evolution (LTE) system, the SRS subframe configuration corresponds to Frequency Division Duplex (FDD) and Time Division Duplex (Time Division Duplex, for short). There are 16 ways for each of TDD), each of which defines the period and location of an SRS subframe configuration. For example, in the above-mentioned mode 8, the period of the SRS subframe configuration is 5 ms, and the position is on the third and fourth subframes every 5 ms. FIG. 8 is a schematic diagram of a relay uplink SRS subframe configuration and a subframe structure thereof according to the first embodiment of the present invention. ^ mouth shown in Figure 8, 4 子子中贞#0, #1, #2, #4, #5, #6, #8, and #9 have been set as uplink Access sub-frames, sub-frames #3 and # 7 is configured as an uplink Backhaul subframe, and sets the last SC-FDMA symbol of subframes #2 and #3 and the first and last SC-FDMA symbols of subframe #7 are configured as guard intervals. It can be seen from this embodiment that the relay station does not miss the data signal on the guard interval, and the uplink station and the user's uplink transmit signal air interface can be merged on the subframe #3. FIG. 9 is a schematic diagram of a configuration of a user uplink SRS subframe according to Embodiment 2 of the present invention. As shown in FIG. 9 , in the TDD mode in which the uplink and downlink are configured as mode 0, the SRS subframe is configured as mode 2, that is, subframes #1, #3, #6, and #8 are SRS subframes, where subframe #1 and #6 is a special subframe. FIG. 10 is a schematic diagram of a relay uplink SRS subframe configuration and a subframe structure thereof according to Embodiment 2 of the present invention. As shown in FIG. 10, subframes #2, #3, and #9 are configured as uplink Access subframes, subframes #4, #7, and #8 are configured as uplink Backhaul subframes, and subframes #3 and # are set. The last SC-FDMA symbol of 8 is configured as a guard interval. It can be seen from this embodiment that the relay station does not miss the data signal on the guard interval, and the uplink transmission signal air interface of the relay station and the user can be combined on the subframe #4 and the subframe #8. FIG. 11 is a schematic diagram of a configuration of a user uplink SRS subframe according to Embodiment 3 of the present invention. As shown in FIG. 11, the relay uplink subframe configuration is performed in the FDD mode, and subframes #0, #1, #2, #8, and #9 are uplink access subframes, and subframes #3, #4, and #5 are used. , #6 and #7 are uplink Backhaul subframes. FIG. 12 is a schematic diagram of a relay uplink SRS subframe configuration and a subframe structure thereof according to Embodiment 3 of the present invention. As shown in FIG. 12, the user uplink subframe corresponding to the subframes #2 and #7 is configured as an SRS subframe, that is, the SRS subframe configuration mode 5, and the last SC- of the subframes #2 and #7 will be relayed. The FDMA symbol is configured as a guard interval. With this embodiment, since the corresponding user subframe #2 is configured as an SRS subframe, the relay station does not miss the data signal on the guard interval, and the corresponding user subframe #7 is also configured as the SRS subframe. , to ensure that the relay station on the subframe #7 can achieve the merger with the user's uplink transmit signal. FIG. 13 is a schematic diagram of a configuration of a relay uplink subframe according to Embodiment 4 of the present invention. As shown in FIG. 13, in the TDD mode in which the uplink and downlink are configured in mode 0, the relay uplink subframe configuration is as shown in FIG. 13, and the subframes #3, #4, #7, and #8 are uplink access subframes, and subframes. #2 and #9 are uplink Backhaul subframes. FIG. 14 is a schematic diagram of a user uplink SRS subframe configuration, a relay uplink subframe configuration, and a subframe structure thereof according to Embodiment 4 of the present invention. As shown in FIG. 14, the SRS subframe configuration mode 11 can be used, and the user uplink subframe corresponding to the subframes #2 and #8 is configured as an SRS subframe, and the SRS subframe configuration mode 11 also has a special subframe. #1 and #6 are configured as SRS subframes, and the last SC-FDMA symbols of the relay subframes #2, #8 are configured as guard intervals. With this embodiment, since the corresponding user subframe #2 is configured as an SRS subframe, The sub-frame #2 can be combined with the user's uplink transmit signal air interface, and the corresponding user sub-frame #8 is also configured as an SRS sub-frame, so that the relay station does not miss the data signal on the guard interval. According to an embodiment of the present invention, an uplink data transmission apparatus based on a relay station is also provided. FIG. 15 is a structural block diagram of a relay station-based uplink data transmission apparatus according to an embodiment of the present invention. As shown in FIG. 15, the uplink data transmission apparatus includes: a transmission unit 1. The transmission unit 1 is configured to perform uplink data reception and uplink data transmission by using a relay uplink subframe, where all or part of the relay uplink subframe is configured according to the SRS subframe of the user, and the guard interval is set, or all or part of The user uplink subframe corresponding to the relay uplink subframe is configured as an SRS subframe, and the guard interval is set in all or part of the relay uplink subframe. Preferably, the uplink relay subframe in which the relay station performs uplink data transmission includes: an uplink Backhaul subframe. Preferably, the uplink relay subframe in which the relay station performs uplink data reception includes: an uplink Access subframe. Preferably, as shown in FIG. 15, the apparatus may further include a first configuration unit 2, configured to configure all or part of the uplink access subframes on the SRS subframe of the user, or, ^! The user uplink subframe corresponding to all or part of the uplink access subframe is configured as an SRS subframe. Preferably, as shown in FIG. 15, the apparatus may further include: a first setting unit 3 connected to the first configuration unit 2, the first setting unit 3 includes a first setting module 30, configured to uplink all or part The access subframe is configured on the SRS subframe of the user, or the user uplink subframe corresponding to all or part of the uplink access subframe is configured as an SRS subframe. Preferably, as shown in FIG. 15, the first setting unit 3 may further include: a second setting module 32, where the next adjacent subframe of the one uplink access subframe configured in the uplink access subframe is an uplink Backhaul In the case of a subframe, the last SC-FDMA symbol of the uplink Access subframe is set as a guard interval, or the first SC-FDMA symbol of the uplink Backhaul subframe is set as a guard interval. Preferably, as shown in FIG. 15, the apparatus may include a second configuration unit 4 configured to configure all or part of the uplink Backhaul subframes on the SRS subframe of the user, or to capture all or part of the uplink Backhaul subframes. The user uplink subframe is configured as an SRS subframe. Preferably, as shown in FIG. 15, the device may include a second setting unit 5 connected to the second configuration unit 4, wherein the second setting unit 5 may include: a third setting module 50, configured to be in the upstream Backhaul When the next adjacent subframe of one uplink Backhaul subframe configured in the subframe is an uplink Access subframe, the last SC-FDMA symbol of the uplink Backhaul subframe is set as a guard interval. Preferably, as shown in FIG. 15, the second setting unit 4 may include: a fourth setting module 52, configured to use, in an uplink Backhaul subframe, an uplink subframe of an uplink Backhaul subframe as an uplink access In the case of a subframe, the last SC-FDMA symbol of the uplink Access subframe is set as a guard interval, or the first SC-FDMA symbol of the uplink Backhaul subframe is set as a guard interval. Through the foregoing embodiments, an uplink data transmission apparatus based on a relay station is provided, which is used to implement the foregoing data transmission method. When a relay station switches between uplink transmission and reception, it can avoid omission when receiving a data signal, and implement a relay station. Signals are combined with the user during uplink transmission. In summary, the uplink data transmission scheme based on the relay station provided by the foregoing embodiment of the present invention implements radio frequency conversion between the uplink transmission and reception of the relay station by using the existing SRS subframe structure, and avoids receiving data. The signal is missed, and the relay station can perform signal combining with the user when transmitting in the uplink. It is compatible with the old version of the user and maintains a normal timing relationship without causing data loss caused by overlapping of adjacent subframes. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim

A method for transmitting uplink data based on a relay station, comprising:

The relay station performs the uplink data reception and the uplink data transmission by using the uplink relay subframe; wherein all or part of the uplink relay subframes are configured according to the measurement reference signal SRS subframe of the user, and the guard interval is configured, or all or part of the relay uplink subframes are correspondingly configured. The user uplink subframe is configured as an SRS subframe, and all or part of the uplink relay subframe sets a guard interval.

2. The method of claim 1 wherein

The uplink relay subframe in which the relay station performs uplink data transmission includes: an uplink backhaul Backhaul subframe;

The uplink relay subframe in which the relay station performs uplink data reception includes: an uplink access Access subframe.

The method according to claim 2, wherein before the relay station performs uplink data reception and uplink data transmission by using the relay uplink subframe, the method further includes:

^! Capture all or part of the uplink Access subframe configured on the user's SRS subframe, or, ^! The user uplink subframe corresponding to all or part of the uplink access subframe is configured as an SRS subframe.

The method according to claim 3, wherein the setting the guard interval comprises: for an uplink access subframe configured in the uplink access subframe, if a previous neighbor of the uplink access subframe is adjacent If the subframe is an uplink Backhaul subframe, the last single carrier frequency division multiple access SC-FDMA symbol of the uplink Backhaul subframe is set as the guard interval.

The method according to claim 3, wherein the setting the guard interval comprises: for an uplink access subframe configured in the uplink access subframe, if the next neighbor of the uplink access subframe is adjacent If the subframe is an uplink Backhaul subframe, set the last SC-FDMA symbol of the uplink Access subframe to the guard interval, or set the first SC-FDMA symbol of the uplink Backhaul subframe to the protection. interval.

The method according to claim 2, wherein before the relay station performs uplink data reception and uplink data transmission by using the relay uplink subframe, the method further includes: ^! All or part of the uplink Backhaul subframe is configured on the SRS subframe of the user, or the user uplink subframe corresponding to all or part of the uplink Backhaul subframe is configured as an SRS subframe.

The method according to claim 6, wherein the setting the guard interval comprises: for an uplink Backhaul subframe configured in the uplink Backhaul subframe, if the next neighbor of the uplink Backhaul subframe is adjacent If the subframe is an uplink Access subframe, the last SC-FDMA symbol of the uplink Backhaul subframe is set as the guard interval.

The method according to claim 6, wherein the setting the guard interval comprises: for an uplink Backhaul subframe configured in the uplink Backhaul subframe, if a previous neighbor of the uplink Backhaul subframe is adjacent If the subframe is an uplink Access subframe, set the last SC-FDMA symbol of the uplink Access subframe to the guard interval, or set the first SC-FDMA symbol of the uplink Backhaul subframe to the protection. interval.

9. An uplink data transmission apparatus based on a relay station, comprising:

a transmitting unit, configured to perform uplink data reception and uplink data transmission by using a relay uplink subframe;

All or part of the relay uplink subframes are configured according to the measurement reference signal SRS subframe of the user, and the guard interval is configured, or the user uplink subframe corresponding to all or part of the relay uplink subframe is configured as an SRS subframe, and the All or part of the relay uplink subframe sets the guard interval.

10. Apparatus according to claim 9 wherein:

The uplink relay subframe in which the relay station performs uplink data transmission includes: an uplink Backhaul subframe;

The uplink relay subframe in which the relay station performs uplink data reception includes: an uplink access subframe.

The device according to claim 10, further comprising:

A first configuration unit for ^ ¹ Access all or part of the uplink sub-frame disposed on the SRS subframe user, or, ^! The user uplink subframe corresponding to all or part of the uplink access subframe is configured as an SRS subframe.

The device according to claim 11, further comprising: a first setting unit, wherein the first setting unit comprises: a first setting module, wherein The first setting module is configured to: when the previous neighboring subframe of the uplink access subframe configured in the uplink access subframe is an uplink Backhaul subframe, the last one of the uplink Backhaul subframes The carrier frequency division multiple access SC-FDMA symbol is set to the guard interval.

The device according to claim 11, further comprising: a first setting unit, wherein the first setting unit comprises: a second setting module, wherein

The second setting module is configured to: when the next adjacent subframe of the uplink access subframe configured in the uplink access subframe is an uplink Backhaul subframe, capture the last SC of the uplink access subframe. The FDMA symbol is set to the guard interval, or the first SC-FDMA symbol of the uplink Backhaul subframe is set as the guard interval.

The device according to claim 10, further comprising:

And a second configuration unit, configured to configure all or part of the uplink Backhaul subframes on the SRS subframe of the user, or configure the user uplink subframes corresponding to all or part of the uplink Backhaul subframes as SRS subframes.

The device according to claim 14, further comprising: a second setting unit, wherein the second setting unit comprises:

a third setting module, configured to: when an next adjacent subframe of an uplink Backhaul subframe configured in the uplink Backhaul subframe is an uplink Access subframe, ^! The last SC-FDMA symbol of the uplink Backhaul subframe is set to the guard interval.

a fourth setting module, configured to: when the last 4 mesh 4|5 subframe of an uplink Backhaul subframe configured in the uplink Backhaul subframe is an uplink Access subframe, ^" the last one of the uplink Access subframe The SC-FDMA symbol is set to the guard interval, or the first SC-FDMA symbol of the uplink Backhaul subframe is set as the guard interval.