Abstract:
The embodiments of the present invention relate to the field of wireless communication technology, especially relate to a data transmission method and device, which are used for supporting the signal reception and transmission between other entities other than the communication between a user device and a base station in the premise of being applied to the signal reception and transmission between the user device and the base station. The signal transmission method provided by the embodiments of the present invention comprises the following: the user device determines the sub-frames belonging to the first set and the sub-frames belonging to the second set in the wireless frames, wherein each sub-frame only belongs to one set; the user device communicates with the resident cell base station by using the sub-frames in the first set, and communicates with the entities other than the resident cell base station by using the sub-frames in the second set. As the sub-frames in the wireless frames are divided into two kinds of sets with different use, so that in the premise of being applied to the signal reception and transmission between the user device and the base station, the signal reception and transmission between other entities can be supported.

Description:
[0001]    The present application claims priority to Chinese Patent Application No. 201110255903.0, filed with the State Intellectual Property Office of PRC on Aug. 31, 2011 and entitled “Data communication method of and apparatus”, the contents of which are hereby incorporated by reference in their entirety. 
       FIELD 
       [0002]    The present invention relates to the field of wireless communication technologies and particularly to a data communication method and apparatus. 
       BACKGROUND 
       [0003]    General duplex modes adopted for a cellular system include a Time Division Duplex (TDD) mode and a Frequency Division Duplex (FDD) mode. In the TDD mode, the same operating band is used for both uplink and downlink, uplink and downlink signals are transmitted at different time, and there is a Guard Period (GP) between uplink and downlink; and in the FDD mode, different operating bands are used for uplink and downlink, uplink and downlink signals may be transmitted over different frequency carriers at the same time, and there is a Guard Band (GB) between uplink and downlink. 
         [0004]    There is somewhat complicated frame structure of a Long Term Evolution (LTE) TDD system as illustrated in  FIG. 1  where a radio frame has a length of 10 ms and includes two types of sub-frames which are special sub-frames and normal sub-frames, totaling to 10 sub-frames, each of which is 1 ms. The special sub-frames include three sub-frames which are a Downlink Pilot Slot (DwPTS) for transmission of a Primary Synchronization Signal (PSS), a Physical Downlink Control Channel (PDCCH), a Physical Hybrid Automatic Repeat Request (HARQ) Indication Channel (PHICH), a Physical Control Format Indication Channel (PCFICH), a Physical Downlink Shared Channel (PDSCH), etc.; a GP as a guard period between the downlink and the uplink; and an Uplink Pilot Slot (UpPTS) for transmission of a Sounding Reference Signal (SRS), a Physical Random Access Channel (PRACH), etc. The normal sub-frames include uplink sub-frames and downlink sub-frames for transmission of uplink/downlink control channels, service data, etc . Particularly in one radio frame, two special sub-frames (located at the sub-frames  1  and  6 ) or one special sub-frame (located at the sub-frame  1 ) may be configured. The sub-frame  0  and the sub-frame  5  as well as the DwPTS among the special sub-frames are always used for downlink transmission, the sub-frame  2  and the UpPTS among the special sub-frames are always used for uplink transmission, and the other sub-frames may be configured for uplink or downlink transmission as needed. 
         [0005]    In the existing system, a user equipment which is not in a Discontinuous Reception (DRX) status needs to detect in each downlink sub-frame a downlink signal transmitted from a base station and transmits a signal to the base station in a corresponding uplink sub-frame as scheduled by the base station. In TDD, the allocation proportion of downlink sub-frames and uplink sub-frames in a radio frame and their corresponding locations are notified by the base station in a system broadcast, and all the user equipments in a cell operate in an uplink/downlink sub-frame allocation scheme (as depicted in Table 1) indicated by the broadcast. In the deployment of the existing TDD network, the same uplink/downlink sub-frame allocation scheme has to be adopted for adjacent cells to avoid interference between one base station and another base station or between one user equipment and another user equipment. 
         [0000]    
       
         
               
               
               
             
               
               
               
               
               
               
               
               
               
               
               
               
             
           
               
                   
               
               
                 Config- 
                   
                   
               
               
                 uration 
                 Switching 
                 Sub-frame No. 
               
             
          
           
               
                 No. 
                 Periodicity 
                 0 
                 1 
                 2 
                 3 
                 4 
                 5 
                 6 
                 7 
                 8 
                 9 
               
               
                   
               
               
                 0 
                  5 ms 
                 D 
                 S 
                 U 
                 U 
                 U 
                 D 
                 S 
                 U 
                 U 
                 U 
               
               
                 1 
                  5 ms 
                 D 
                 S 
                 U 
                 U 
                 D 
                 D 
                 S 
                 U 
                 U 
                 D 
               
               
                 2 
                  5 ms 
                 D 
                 S 
                 U 
                 D 
                 D 
                 D 
                 S 
                 U 
                 D 
                 D 
               
               
                 3 
                 10 ms 
                 D 
                 S 
                 U 
                 U 
                 U 
                 D 
                 D 
                 D 
                 D 
                 D 
               
               
                 4 
                 10 ms 
                 D 
                 S 
                 U 
                 U 
                 D 
                 D 
                 D 
                 D 
                 D 
                 D 
               
               
                 5 
                 10 ms 
                 D 
                 S 
                 U 
                 D 
                 D 
                 D 
                 D 
                 D 
                 D 
                 D 
               
               
                 6 
                  5 ms 
                 D 
                 S 
                 U 
                 U 
                 U 
                 D 
                 S 
                 U 
                 U 
                 D 
               
               
                   
               
             
          
         
       
     
         [0006]    The existing radio frame structure is only applicable to transmission and reception of a signal between a user equipment and a base station and can not well support transmission and reception of a signal other than between a user equipment and a base station, for example, a direct communication service between one user equipment and another user equipment, direct communication between one base station and another base station via an air interface, etc. 
         [0007]    In summary, the existing radio frame structure is only applicable to transmission and reception of a signal between a user equipment and a base station and can not support transmission and reception of a signal between other entities than a user equipment and a base station in communication. 
       SUMMARY 
       [0008]    Embodiments of the invention provide a data communication method and apparatus so as to be applicable to transmission and reception of a signal between a user equipment and a base station and also support transmission and reception of a signal between other entities than a user equipment and a base station in communication. 
         [0009]    An embodiment of the invention provides a signal communication method including: 
         [0010]    a user equipment determining a first set of sub-frames and a second set of sub-frames in one or more radio frames, wherein each sub-frame belongs to only one of the sets; and 
         [0011]    the user equipment communicating with a base station of a serving cell in the first set of sub-frames and communicating with another entity than the base station of the serving cell in the second set of sub-frames. 
         [0012]    An embodiment of the invention provides a signal communication method including: 
         [0013]    a base station determining a first set of sub-frames and a second set of sub-frames in one or more radio frames; and 
         [0014]    the base station communicating with a user equipment residing in a cell of the present base station in the first set of sub-frames and communicating with another entity than the user equipment residing in the cell of the present base station in the second set of sub-frames. 
         [0015]    An embodiment of the invention provides a signal communication apparatus including: 
         [0016]    a first determining module configured to determine a first set of sub-frames and a second set of sub-frames in one or more radio frames, wherein each sub-frame belongs to only one of the sets; and 
         [0017]    a first communicating module configured to communicate with a base station of a serving cell in the first set of sub-frames and to communicate with another entity than the base station of the serving cell in the second set of sub-frames. 
         [0018]    An embodiment of the invention provides a signal communication apparatus including: 
         [0019]    a second determining module configured to determine a first set of sub-frames and a second set of sub-frames in one or more radio frames; and 
         [0020]    a second communicating module configured to communicate with a user equipment residing in a cell of the present base station in the first set of sub-frames and to communicate with another entity than the user equipment residing in the cell of the present base station in the second set of sub-frames. 
         [0021]    Sub-frames in one or more radio frames are divided into two sets to be used differently to thereby be applicable to transmission and reception of a signal between a user equipment and a base station and also support transmission and reception of a signal between other entities than a user equipment and a base station in communication. 
         [0022]    The resource utilization ratio of the system and the system performance is further improved. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0023]      FIG. 1  is a schematic structural diagram of a TD-LTE system frame; 
           [0024]      FIG. 2  is a schematic flow chart of a method of a user equipment transmitting data according to an embodiment of the invention; 
           [0025]      FIG. 3  is a schematic flow chart of a method of a base station transmitting data according to an embodiment of the invention; 
           [0026]      FIG. 4  is a schematic diagram of first TDD system communication according to an embodiment of the invention; 
           [0027]      FIG. 5  is a schematic diagram of second TDD system communication according to an embodiment of the invention; 
           [0028]      FIG. 6  is a schematic structural diagram of a user equipment according to an embodiment of the invention; and 
           [0029]      FIG. 7  is a schematic structural diagram of a base station according to an embodiment of the invention. 
       
    
    
     DETAILED DESCRIPTION 
       [0030]    In view of such a problem in the prior art that an existing radio frame structure is only applicable to transmission and reception of a signal between a user equipment and a base station and can not support transmission and reception of a signal between other entities than a user equipment and a base station, in embodiments of the invention, sub-frames in one or more radio frames are divided into a first set and a second set, where the first set of sub-frames are used for communication between a base station and a user equipment, and the second set of sub-frames are used for another use of communication, for example, communication between user equipments, communication between base stations, etc. Sub-frames in one or more radio frames are divided into two sets to be used differently to thereby be applicable to transmission and reception of a signal between a user equipment and a base station and also support transmission and reception of a signal between other entities than a user equipment and a base station in communication, for example, transmission and reception of a signal between a user equipment and another entity than a base station, transmission and reception of a signal between a base station and another entity than a user equipment. 
         [0031]    Particularly the solution according to the embodiments of the invention is applicable to an FDD system and a TDD system. 
         [0032]    The embodiments of the invention will be further described below in details with reference to the drawings. 
         [0033]    As illustrated in  FIG. 2 , a method of a user equipment transmitting data according to an embodiment of the invention includes the following steps. 
         [0034]    Step  201 . A user equipment determines a first set of sub-frames and a second set of sub-frames in one or more radio frames; and 
         [0035]    Step  202 . The user equipment communicates with a base station of a serving cell in the first set of sub-frames and communicates with another entity than the base station of the serving cell in the second set of sub-frames. 
         [0036]    Particularly the other entity than the base station of the serving cell includes another user equipment and another base station than the base station of the serving cell. 
         [0037]    Sub-frames in one or more radio frames are divided into two sets to be used differently to thereby be applicable to transmission and reception of a signal between a user equipment and a base station and also support transmission and reception of a signal between a user equipment and another entity than a base station, for example, transmission and reception of a signal between one user equipment and another user equipment. 
         [0038]    Preferably in an implementation, a specific period of time may be preset, for example, 5 radio frames, and then the user equipment determines a first set of sub-frames and a second set of sub-frames in the 5 radio frames and communicates in subsequent radio frames as in the prior art. 
         [0039]    The specific period of time may be preset from simulation or as needed and preferably may be specified in a protocol or notified by the network side. 
         [0040]    In communication, the user equipment may communicate respectively with the base station of the serving cell and with the other entity than the base station of the serving cell in the first set and the second set of sub-frames in the same radio frame as needed, for example, for the sub-frame  3  and the sub-frame  4  in the same radio frame, the sub-frame  3  belongs to the first set, and the sub-frame  4  belongs to the second set, and then the user equipment may communication with the base station of the serving cell in the sub-frame  3  and communication with the other entity than the base station of the serving cell in the sub-frame  4 ; and 
         [0041]    The user equipment may communicate respectively with the base station of the serving cell and with the other entity than the base station of the serving cell in the first set and the second set of sub-frames in different radio frames as needed, for example, for the sub-frame  3  and the sub-frame  4  in different radio frames, the sub-frame  3  belongs to the first set, and the sub-frame  4  belongs to the second set, and then the user equipment may communication with the base station of the serving cell in the sub-frame  3  and communication with the other entity than the base station of the serving cell in the sub-frame  4 . 
         [0042]    In communication, the user equipment may communicate the same or different data with the base station of the serving cell and with the other entity than the base station of the serving cell. 
         [0043]    For example, the user equipment may forward the data communicated with the base station of the serving cell to another user equipment or another base station as needed for a service. Particularly the user equipment forwards the data communicated with the base station of the serving cell in the first set of sub-frames to the other entity than the base station of the serving cell in the second set of sub-frames. 
         [0044]    In an implementation, a sub-frame may belong to both of the two sets; and preferably each sub-frame belongs to only one of the sets. 
         [0045]    Particularly the user equipment according to the embodiment of the invention is an evolved user equipment, where the evolved user equipment refers to an evolved TDD user equipment and a user equipment supporting the function of the inventive solution, for example, a user equipment of the 3GPP LTE Rel-11 or a later release. The base station of the serving cell refers to a base station serving the serving cell of the user equipment. 
         [0046]    In the step  201 , the user equipment determines the first set of sub-frames and the second set of sub-frames in the radio frame(s) according to received configuration information from the network side. 
         [0047]    Preferably the user equipment receives the configuration information in a system broadcast or user equipment specific signaling. 
         [0048]    If the user equipment receives the configuration information in the user equipment specific signaling, then all or a part or none of configuration information corresponding to different user equipments is the same. 
         [0049]    Particularly the first set of sub-frames include uplink sub-frames and downlink sub-frames respectively used for transmission and reception of uplink and downlink signals between the user equipment and the network side. In a TDD system, downlink sub-frames and uplink sub-frames are located over the same carrier, and a sub-frame direction division scheme may be notified by the network side to the user equipment, for example, in a system broadcast, user equipment specific signaling, etc. If it is notified in the user equipment specific signaling, then the different user equipments may be configured with different sub-frame direction division schemes. Particularly in the step  201 , the user equipment determines the uplink sub-frames and the downlink sub-frames in the first set according to the received configuration information from the network side. 
         [0050]    Preferably in the step  202 , the user equipment transmits a signal in the uplink sub-frames in the first set and receives a signal in the downlink sub-frames in the first set. 
         [0051]    Particularly the second set of sub-frames include sub-frames in a transmission status and sub-frames in a reception status. In the TDD system, the sub-frames in the transmission status and the sub-frames in the reception status are located over the same carrier, and a sub-frame status division scheme may be notified by the network side to the user equipment, for example, in a system broadcast, user equipment specific signaling, etc. If it is notified in the user equipment specific signaling, then different user equipments may be configured with different sub-frame status division schemes. Particularly in the step  201 , the user equipment determines the sub-frames in the transmission status and the sub-frames in the reception status in the second set according to the received configuration information from the network side. 
         [0052]    Preferably in the step  202 , the user equipment transmits a signal in the sub-frames in the transmission status in the second set and receives a signal in the sub-frames in the reception status in the second set. 
         [0053]    Particularly the user equipment transmits a signal to another user equipment in the sub-frames in the transmission status in the second set and does not transmit a signal to the base station in sub-frames in the transmission status; and receives a signal from the another user equipment in the sub-frames in the reception status in the second set and does not receive a signal from the base station in sub-frames in the reception status. 
         [0054]    For example, when the user equipment communicates directly with another user equipment, the user equipment may neither receive a signal from the base station nor transmit a signal to the base station in these sub-frames, and the user equipment is configured in a transmission or reception status according to signaling of the base station, where different user equipments may be configured in the same or different statuses in the same one sub-frame. In the transmission status, the user equipment transmits control signaling, a data signal, corresponding channel measurement and demodulation reference signals, etc., for direct communication between the user equipments, and a reference signal, a synchronization signal, etc., used for the other user equipment to capture the present user equipment; and in the reception status, the user equipment may detect a synchronization signal or a reference signal transmitted from one or more other user equipments to discover the presence of the corresponding user equipment(s) and to set up synchronization with the corresponding user equipment(s). Moreover control signaling, a data signal, corresponding measurement and demodulation reference signals, etc., transmitted from the corresponding user equipment(s) may be further received. 
         [0055]    Preferably the user equipment may communication in the second set of sub-frames for another use (for example, communication between the user equipments), possibly in a full sub-frame, for example, a temporal length of 1 ms and a system bandwidth in the frequency domain in the LTE system; or a part of a sub-frame, for example, a part of the temporal length in a full sub-frame (for example, a part of Orthogonal Frequency Division Multiplexing (OFDM) symbols in the LTE) and a part of the width in the frequency domain (for example, a part of Resource Blocks (RBs) in the LTE). 
         [0056]    As illustrated in  FIG. 3 , a method of a base station transmitting data according to an embodiment of the invention includes the following steps. 
         [0057]    Step  301 . A base station determines a first set of sub-frames and a second set of sub-frames in one or more radio frames; and 
         [0058]    Step  302 . The base station communicates with a user equipment residing in a cell of the present base station in the first set of sub-frames and communicates with another entity than the user equipment residing in the cell of the present base station in the second set of sub-frames. 
         [0059]    The other entity than the user equipment residing in the cell of the present base station includes another base station and a user equipment which does not resides in the cell of the present base station. 
         [0060]    Sub-frames in one or more radio frames are divided into two sets to be used differently to thereby be applicable to transmission and reception of a signal between a user equipment and a base station and also support transmission and reception of a signal between the base station and another entity than the user equipment, for example, transmission and reception of a signal between one base station and another base station. 
         [0061]    Preferably in an implementation, a specific period of time may be preset, for example, 5 radio frames, and then the base station determines a first set of sub-frames and a second set of sub-frames in the 5 radio frames and communicates in subsequent frames as in the prior art. 
         [0062]    The specific period of time may be preset from simulation or as needed and preferably may be specified in a protocol or notified by the network side (e.g., a higher layer). 
         [0063]    In communication, the base station may communicate respectively with the user equipment residing in the cell of the present base station and with the other entity than the user equipment residing in the cell of the present base station in the first set and the second set of sub-frames in the same radio frame as needed, for example, for the sub-frame  3  and the sub-frame  4  in the same radio frame, the sub-frame  3  belongs to the first set, and the sub-frame  4  belongs to the second set, and then the base station may communication with the user equipment residing in the cell of the present base station in the sub-frame  3  and communication with the other entity than the user equipment residing in the cell of the present base station in the sub-frame  4 ; and 
         [0064]    The base station may communicate respectively with the user equipment residing in the cell of the present base station and with the other entity than the user equipment residing in the cell of the present base station in the first set and the second set of sub-frames in different radio frames as needed, for example, for the sub-frame  3  and the sub-frame  4  in different radio frames, the sub-frame  3  belongs to the first set, and the sub-frame  4  belongs to the second set, and then the base station may communication with user equipment residing in the cell of the present base station in the sub-frame  3  and communication with the other entity than user equipment residing in the cell of the present base station in the sub-frame  4 . 
         [0065]    In communication, the base station may communicate the same or different data with the user equipment residing in the cell of the present base station and with the other entity than the user equipment residing in the cell of the present base station. 
         [0066]    For example, the base station may forward the data communicated with the user equipment residing in the cell of the present base station to another user equipment or another base station as needed for a service. Particularly the base station forwards the data communicated with the user equipment residing in the cell of the present base station in the first set of sub-frames to the other entity than the user equipment residing in the cell of the present base station in the second set of sub-frames. 
         [0067]    In an implementation, a sub-frame may belong to both of the two sets; and preferably each sub-frame belongs to only one of the sets. 
         [0068]    Particularly the user equipment residing in the cell of the present base station refers to a user equipment in a cell managed by the base station. 
         [0069]    In the step  302 , the base station communicates with the user equipment residing in the cell of the present base station in the first set of sub-frames, where the user equipment residing in the cell of the present base station here includes an evolved user equipment and a non-evolved user equipment. 
         [0070]    Particularly the evolved user equipment is an evolved TDD user equipment and a user equipment supporting the function of the inventive solution, for example, a user equipment of the 3GPP LTE Rel-11 or a later release. 
         [0071]    Preferably in the step  302 , the base station communicates with the non-evolved user equipment residing in the cell of the present base station in the second set of sub-frames. 
         [0072]    In an implementation, the base station may determine the first set of sub-frames and the second set of sub-frames in the radio frame(s) according to configuration information of the network side or may determine by itself the first set of sub-frames and the second set of sub-frames in the radio frame(s). 
         [0073]    If the base station determines the first set of sub-frames and the second set of sub-frames in the radio frame(s) according to the configuration information of the network side, then in the step  301 , the base station determines the first set of sub-frames and the second set of sub-frames in the radio frame(s) according to the received configuration information from the network side (for example, a higher layer). 
         [0074]    Particularly all or a part or none of configuration information corresponding to different base stations is the same. 
         [0075]    If the base station determines by itself the first set of sub-frames and the second set of sub-frames in the radio frame(s), then the base station determines the first set of sub-frames and the second set of sub-frames according to a service demand; and determines a transmission direction of the first set of sub-frames according to an uplink/downlink configuration proportion and determines a transmission direction of the second set of sub-frames according to a service to be communicated. 
         [0076]    For example, if there are a larger number of D2D services to be performed, then some more sub-frames may be configured in the second set; and if there are a larger number of services between the base station and the user equipment, then some more sub-frames may be configured in the first set. 
         [0077]    For example, if the uplink/downlink configuration proportion is 1:3, then the sub-frames in the first set may be configured at exactly or approximately 1:3. 
         [0078]    For example, in a D2D service, if there is an almost equal amount of data transmitted between user equipments A and B, then the sub-frames in the transmission status and in the reception status may be configured in the second set at an almost equal proportion; and if there is a larger amount transmitted from the user equipment A to the user equipment B, then the user equipment A may be configured with a larger number of sub-frames in the transmission status and the user equipment B may be configured with a larger number of sub-frames in the reception status in the second set. 
         [0079]    The same applies to other scenarios than this scenario, and a repeated description thereof will be omitted here. 
         [0080]    In an implementation, if the first set of sub-frames and the second set of sub-frames are configured by the network side, then the configuration mode adopted by the network side may be the same as that adopted by the base station as described above. 
         [0081]    Preferably the base station generates configuration information from the determined first set and second set and transmits the configuration information in a system broadcast or user equipment specific signaling. 
         [0082]    If the base station transmits the configuration information in the user equipment specific signaling, then all or a part or none of configuration information corresponding to different user equipments is the same. 
         [0083]    Particularly the first set of sub-frames include uplink sub-frames and downlink sub-frames respectively used for transmission and reception of uplink and downlink signals between the base station and the user equipment. 
         [0084]    Particularly the base station receives a signal in the uplink sub-frames in the first set and transmits a signal in the downlink sub-frames in the first set. 
         [0085]    Particularly the second set of sub-frames include sub-frames in a transmission status and sub-frames in a reception status. Particularly the base station transmits a signal in the sub-frames in the transmission status in the second set and receives a signal in the sub-frames in the reception status in the second set. 
         [0086]    If the base station communicates with another base station, then the base station transmits a signal to the other base station in the sub-frames in the transmission status in the second set and does not transmit a signal to the user equipment in the sub-frames in the transmission status; and receives a signal from the other base station in the sub-frames in the reception status in the second set and does not receive a signal from the user equipment in sub-frames in the reception status. 
         [0087]    For example, when the base station communicates directly with another base station, the base station may neither receive a signal transmitted from the user equipment nor transmit a signal to the user equipment in these sub-frames, and the base station is configured by the network side in a transmission or reception status, where different base stations may be configured in the same or different statuses in the same sub-frame. In the transmission status, the base station transmits control signaling, a data signal, corresponding measurement and demodulation reference signals, etc., for direct communication between the base stations, and a reference signal, a synchronization signal, etc., used for the other base station to capture the present base station; and in the reception status, the base station may detect a synchronization signal or a reference signal transmitted from one or more other base stations to set up synchronization with the corresponding base station(s). Moreover control signaling, a data signal, corresponding measurement and demodulation reference signals, etc., transmitted from the corresponding base station(s) may be further received. 
         [0088]    Preferably the base station may further configure a non-evolved user equipment with uplink sub-frames in the determined second set of sub-frames. 
         [0089]    Preferably the base station may further schedule the non-evolved user equipment not to transmit a signal in the second set of sub-frames. 
         [0090]    Transmission of a signal by the user equipment in the second set will be described below by way of an example. 
         [0091]    As illustrated in  FIG. 4 , in the TDD system, evolved user equipments  1  and  2  are configured by a base station (i.e., an eNB) respectively with two sets, which are a first set including sub-frames { 0 ,  1 ,  2 ,  5 ,  6 ,  7 } in a radio frame and a second set including sub-frames { 3 ,  4 ,  8 ,  9 } in the radio frame. For the evolved user equipment  1 , sub-frames in a reception status are the sub-frames { 3 ,  8 } in the second set, and sub-frames in a transmission status are the sub-frames { 4 ,  9 } in the second set; and for the evolved user equipment  2 , sub-frames in a reception status are the sub-frames { 4 ,  9 } in the second set, and sub-frames in a transmission status are the sub-frames { 3 ,  8 } in the second set. 
         [0092]    In the sub-frames in the reception status, the evolved user equipments  1  and  2  do not receive and process a signal from the base station but obtain synchronization with another evolved user equipment, receive control signaling, data and a reference signal from the other evolved user equipment, etc; and 
         [0093]    In the sub-frames in the transmission status, the evolved user equipments  1  and  2  do not transmit a signal to the base station but transmit a synchronization signal, control signaling, a data signal, a reference signal, etc., to the user equipment. 
         [0094]    Transmission of a signal by the base station in the second set will be described below by way of a particular example. 
         [0095]    As illustrated in  FIG. 5 , an evolved base station  1  and an evolved base station  2  are configured by the network side with two sets of sub-frames, which are a first set including sub-frames { 0 ,  1 ,  2 ,  5 ,  6 ,  7 } in a radio frame and a second set including sub-frames { 3 ,  4 ,  8 ,  9   56  in the radio frame. For the evolved base station  1 , sub-frames in a reception status are the sub-frames { 3 ,  8 } in the second set, and sub-frames in a transmission status are the sub-frames { 4 ,  9 } in the second set; and for the evolved base station  2 , sub-frames in a reception status are the sub-frames { 4 ,  9 } in the second set, and sub-frames in a transmission status are the sub-frames { 3 ,  8 } in the second set. 
         [0096]    In the sub-frames in the reception status, the evolved base station  1  and the base station  2  do not transmit a signal to the user equipment but transmit a synchronization signal, control signaling, a data signal, a reference signal, etc., to another base station; and 
         [0097]    In the sub-frames in the transmission status, the evolved base station  1  and the base station  2  do not receive a signal transmitted from the user equipment but receive and process a synchronization signal, control signaling, a data signal, a reference signal, etc., transmitted from the other base station. 
         [0098]    Moreover in the second set of sub-frames, the base station still can configure evolved user equipments to communicate directly with each other, particularly with reference to  FIG. 4 . 
         [0099]    For a non-evolved user equipment, it can transmit uplink and downlink signals with the base station as in the prior art, and in the second set of sub-frames with which an evolved user equipment is configured, the base station configures uplink transmission for the non-evolved user equipment and/or does not schedule the non-evolved user equipment to transmit a signal in the second set of sub-frames. 
         [0100]    Based upon the same inventive idea, an embodiment of the invention further provides a user equipment, and since the user equipment addresses the problem under a similar principle to the method of a user equipment transmitting data according to embodiments of the invention, reference can be made to the implementation of the method for an implementation of the user equipment, so a repeated description thereof will be omitted here. 
         [0101]    As illustrated in  FIG. 6 , a user equipment according to an embodiment of the invention includes a first determining module  600  and a first communicating module  610 . 
         [0102]    The first determining module  600  is configured to determine a first set of sub-frames and a second set of sub-frames in one or more radio frames, where each sub-frame belongs to only one of the sets; and 
         [0103]    The first communicating module  610  is configured to communicate with a base station of a serving cell in the first set of sub-frames and to communicate with another entity than the base station of the serving cell in the second set of sub-frames. 
         [0104]    In an implementation, a sub-frame may belong to both of the two sets; and preferably each sub-frame belongs to only one of the sets. 
         [0105]    Preferably the first determining module  600  determines the first set of sub-frames and the second set of sub-frames in the radio frame(s) according to received configuration information from the network side. 
         [0106]    Preferably the first determining module  600  receives the configuration information in a system broadcast or user equipment specific signaling. 
         [0107]    Preferably the first determining module  600  determines uplink sub-frames and downlink sub-frames in the first set and determines sub-frames in a transmission status and sub-frames in a reception status in the second set according to the received configuration information from the network side. 
         [0108]    Preferably the first communicating module  610  transmits a signal in the uplink sub-frames in the first set and receives a signal in the downlink sub-frames in the first set; and transmits a signal in the sub-frames in the transmission status in the second set and receives a signal in the sub-frames in the reception status in the second set. 
         [0109]    Preferably the first communicating module  610  transmits a signal to another user equipment in the sub-frames in the transmission status in the second set and does not transmit a signal to the base station in sub-frames in the transmission status; and receives a signal from the other user equipment in the sub-frames in the reception status in the second set and does not receive a signal from the base station in sub-frames in the reception status. 
         [0110]    Preferably the first communicating module  610  forwards data communicated with the base station of the serving cell in the first set of sub-frames to the other entity than the base station of the serving cell in the second set of sub-frames. 
         [0111]    Based upon the same inventive idea, an embodiment of the invention further provides a base station, and since the base station addresses the problem under a similar principle to the method of a base station transmitting data according to embodiments of the invention, reference can be made to the implementation of the method for an implementation of the base station, so a repeated description thereof will be omitted here. 
         [0112]    As illustrated in  FIG. 7 , a base station according to an embodiment of the invention includes: a second determining module  700  and a second communicating module  710 . 
         [0113]    The second determining module  700  is configured to determine a first set of sub-frames and a second set of sub-frames in one or more radio frames; and 
         [0114]    The second communicating module  710  is configured to communicate with a user equipment residing in a cell of the present base station in the first set of sub-frames and to communicate with another entity than the user equipment residing in the cell of the present base station in the second set of sub-frames. 
         [0115]    Preferably the second communicating module  710  communicates with a non-evolved user equipment residing in the cell of the present base station in the second set of sub-frames. 
         [0116]    In an implementation, a sub-frame may belong to both of the two sets; and preferably each sub-frame belongs to only one of the sets. 
         [0117]    The second communicating module  710  communicates with the user equipment residing in the cell of the present base station in the first set of sub-frames, where the user equipment residing in the cell of the present base station includes an evolved user equipment and a non-evolved user equipment. 
         [0118]    Preferably the second determining module  700  determines the first set of sub-frames and the second set of sub-frames in the radio frame(s) according to received configuration information from the network side. 
         [0119]    Preferably the second determining module  700  determines the first set of sub-frames and the second set of sub-frames according to a service demand; determines a transmission direction of the first set of sub-frames according to an uplink/downlink configuration proportion and determines a transmission direction of the second set of sub-frames according to a service to be transmitted; and generates configuration information from the determined first set and second set and transmits the configuration information in a system broadcast or user equipment specific signaling. 
         [0120]    Preferably the second communicating module  710  receives a signal in the uplink sub-frames in the first set and transmits a signal in the downlink sub-frames in the first set; and transmits a signal in the sub-frames in the transmission status in the second set and receives a signal in the sub-frames in the reception status in the second set. 
         [0121]    Preferably the second communicating module  710  transmits a signal to another base station in the sub-frames in the transmission status in the second set and does not transmit a signal to the user equipment in sub-frames in the transmission status; and receives a signal from the other base station in the sub-frames in the reception status in the second set and does not receive a signal from the user equipment in sub-frames in the reception status. 
         [0122]    Preferably the second communicating module  710  forwards data communicated with the user equipment residing in the cell of the present base station in the first set of sub-frames to the other entity than the user equipment residing in the cell of the present base station in the second set of sub-frames. 
         [0123]    Preferably the second determining module  700  configures a non-evolved user equipment with uplink sub-frames in the determined second set of sub-frames. 
         [0124]    Preferably the second determining module  700  does not schedule a non-evolved user equipment to transmit a signal in the second set of sub-frames. 
         [0125]    Sub-frames in one or more radio frames are divided into two sets to be used differently to thereby be applicable to transmission and reception of a signal between a user equipment and a base station and also support transmission and reception of a signal between other entities than a user equipment and a base station in communication, for example, transmission and reception of a signal between a user equipment and another entity than a base station, transmission and reception of a signal between a base station and another entity than a user equipment, etc.; and to further improve the resource utilization ratio of the system and the system performance. 
         [0126]    Those skilled in the art shall appreciate that the embodiments of the invention can be embodied as a method, a system or a computer program product. Therefore the invention can be embodied in the form of an all-hardware embodiment, an all-software embodiment or an embodiment of software and hardware in combination. Furthermore the invention can be embodied in the form of a computer program product embodied in one or more computer useable storage mediums (including but not limited to a disk memory, an optical memory, etc.) in which computer useable program codes are contained. 
         [0127]    The invention has been described in a flow chart and/or a block diagram of the method, the device (system) and the computer program product according to the embodiments of the invention. It shall be appreciated that respective flows and/or blocks in the flow chart and/or the block diagram and combinations of the flows and/or the blocks in the flow chart and/or the block diagram can be embodied in computer program instructions. These computer program instructions can be loaded onto a general-purpose computer, a specific-purpose computer, an embedded processor or a processor of another programmable data processing device to produce a machine so that the instructions executed on the computer or the processor of the other programmable data processing device create means for performing the functions specified in the flow(s) of the flow chart and/or the block(s) of the block diagram. 
         [0128]    These computer program instructions can also be stored into a computer readable memory capable of directing the computer or the other programmable data processing device to operate in a specific manner so that the instructions stored in the computer readable memory create an article of manufacture including instruction means which perform the functions specified in the flow(s) of the flow chart and/or the block(s) of the block diagram. 
         [0129]    These computer program instructions can also be loaded onto the computer or the other programmable data processing device so that a series of operational steps are performed on the computer or the other programmable data processing device to create a computer implemented process so that the instructions executed on the computer or the other programmable device provide steps for performing the functions specified in the flow(s) of the flow chart and/or the block(s) of the block diagram. 
         [0130]    Evidently those skilled in the art can make various modifications and variations to the invention without departing from the scope of the invention. Thus the invention is also intended to encompass these modifications and variations thereto so long as the modifications and variations come into the scope of the claims appended to the invention and their equivalents.