CN101227225A - Interference site detection method, neighbor site detection method and site detection device - Google Patents

Abstract

The invention relates to the field of wireless communication, and discloses an interference site detection method and a neighbor site detection method. The interference site detection method 1 provided by the present invention includes: the mobile station MS scans and synchronizes with the scanned site; receives the signal transmitted by the synchronized site, and extracts the identity of the synchronized site from the signal ; If the extraction is successful, report the station identifier to the base station BS or relay station RS serving the MS. Neighbor site detection method 1 provided by the present invention includes: the RS receives signals transmitted by other sites; extracts the identifier of the transmitting site from the signal, and if the extraction is successful, then confirms that the transmitting site is a neighbor site of the RS; the present invention also provides Corresponding site detection device. Through the present invention, the relay station in the multi-hop relay communication system can detect its interference station and/or neighbor station.

Description

Interference site detection method, neighbor site detection method and site detection device

technical field

The invention relates to the field of wireless communication, in particular to an interference site detection method, a neighboring site detection method and a site detection device in a multi-hop relay communication system.

Background technique

In a wireless communication system, due to reasons such as path attenuation of electromagnetic waves and occlusion of buildings, the strength of wireless communication signals in some areas is low, and the communication quality of mobile terminals located in these areas will become very poor. As people's demand for broadband wireless communication increases day by day, the demand for wireless bandwidth becomes larger and larger, so higher and higher carrier frequencies are used in new protocols and systems. Since the attenuation of radio waves increases with the increase of frequency, high carrier frequency must face the problem of high attenuation, which further limits the coverage of base stations. In order to enable the base station to have a larger coverage, it is usually necessary to use RS (Relay Station, relay station) to enhance the wireless communication signal between BS (Base Station, base station) and MS (Mobile Station, mobile station).

Generally speaking, if there is no RS in the system, the signal is only transmitted once between the BS and the MS. Such a system is called a single-hop communication system; a system with at least one RS is called a multi-hop relay communication system. The hop count represents the number of signal transmissions between the base station and the terminal. For example, if there is one RS in the system, the signal is transmitted twice between the BS, RS and MS, so it is called a two-hop system. In a multi-hop system, if the BS is considered as the 0th hop, the relay station connected to the BS is the first hop, and the relay station connected to the first hop relay station is the second hop, so that the relay stations in the system can be determined the number of hops. FIG. 1 is a structural diagram of a multi-hop relay communication system provided with relay stations in the prior art, and each RS is responsible for forwarding data or signaling information between a BS and an MS. Compared with the single-hop system, the system can obtain wider coverage through RS. As in Fig. 1, MS5 can be covered by RS5, and the data between MS5 and BS can be transmitted through the relay link formed by BS, RS2, RS4, and RS5.

For an RS in a multi-hop relay system, the BS or other RS that overlaps with its coverage area is the interfering site of the RS; in the interfering site, the BS or other RS that can communicate with it is the neighbor site of the RS. Refer to the topology structure diagram of the multi-hop relay system shown in Figure 2; wherein, the two-way solid line arrow represents the multi-hop relay connection for actual communication, the dotted line two-way arrow represents the effective wireless connection that can communicate in practical applications, and the dotted line The one-way arrow indicates that it is within the coverage area but cannot form an effective wireless connection. For example, although the signal sent by RS2 cannot be correctly demodulated by RS7, its power level is still at a high interference level; specifically, in Figure 2, the actual Communication relay links include BS<-->RS1<-->RS2<-->RS3, BS<-->RS4 and BS<-->RS5<-->RS6. For RS2, in actual application It can also communicate with RS4 and RS6 respectively to form an effective wireless connection, then the neighbor set of RS2 includes not only RS1 and RS3, but also RS4 and RS6, that is, the set of neighbor sites of RS2 is {RS1, RS3, RS4, RS6} ; The set of interference sites is {RS1, RS3, RS4, RS6, RS7}, from which it can be seen that the set of neighbor sites is a subset of the set of interference sites.

Neighboring sites and interference sites of the RS play a very important role in the multi-hop relay system, such as when a RS under the management of the BS or RS fails and needs to switch the relay link, or when the BS or RS needs to balance the load Neighbor sites need to be discovered; resources can also be reused according to interference sites; currently, for multi-hop relay systems, there is no method for detecting neighbor sites or detecting interference sites.

Contents of the invention

The technical problem to be solved by the embodiments of the present invention is to provide an interference site detection method and a site detection device, so that a relay station in a multi-hop communication system can discover its interference site.

In order to solve the above technical problems, an embodiment of the present invention provides a method for detecting interference sites, including:

The mobile station MS scans and synchronizes with the scanned stations;

receiving a signal transmitted by the synchronized station, and extracting the identifier of the synchronized station from the signal;

If the extraction is successful, the station identifier is reported to the base station BS or relay station RS serving the MS.

Embodiments of the present invention also provide a method for detecting interference sites, including:

RS receives signals transmitted by other stations;

Estimate the energy of the signal;

If the signal energy exceeds the predetermined threshold, it is determined that the transmitting site is an interference site of the RS.

A site detection device, including a scanning unit, a synchronization unit, a receiving unit, a signal analysis unit and a sending unit:

The scanning unit is used to perform neighbor scanning;

The synchronization unit is used to synchronize with the site scanned by the scanning unit;

The receiving unit is used to receive the signal transmitted by the transmitting site synchronized by the synchronizing unit;

The signal analyzing unit is used to analyze the signal received by the receiving unit, and extract the identification of the site from the signal;

The sending unit is configured to send the station identifier extracted by the signal analysis unit to a relay station or a base station serving the station detection device when the station identifier is extracted successfully.

Embodiments of the present invention also provide a site detection device, including a scanning unit, a synchronization unit, a receiving unit, a signal analysis unit and a storage unit:

The scanning unit is used for downlink channel scanning;

The synchronization unit is used to synchronize with the site scanned by the scanning unit;

The receiving unit is used to receive the signal transmitted by the transmitting site synchronized by the synchronizing unit;

The signal analyzing unit is used to analyze the signal received by the receiving unit;

The storage unit is configured to store the site identification of the transmitting site in the list of interference sites according to the result of analyzing the received signal by the signal analyzing unit.

It can be seen from the above technical solutions that after the MS scans and detects its neighbor sites, it reports its neighbor site identifier to the RS or BS serving it; since the MS's neighbor site is the RS or BS serving the MS Interfering stations, the RS or BS synthesizes the results reported by the MSs in the coverage area to obtain the set of interfering stations. In addition to reporting according to the MS, the RS can also evaluate the energy of the received signal transmitted by the synchronized station, so as to obtain its interfering station; in summary, through the above-mentioned technical solution provided by the embodiment of the present invention, A relay station can be made to detect its interfering stations.

Another technical problem to be solved by the embodiments of the present invention is to provide a neighbor site detection method and a site detection device, so that the relay station can discover its neighbor nodes.

In order to solve the above technical problems, an embodiment of the present invention provides a neighbor site detection method, including:

RS receives signals transmitted by other stations;

The identifier of the transmitting site is extracted from the signal, and if the extraction is successful, it is confirmed that the transmitting site is a neighbor site of the RS.

The embodiment of the present invention also provides a neighbor site detection method, including:

RS receives signals transmitted by other stations and evaluates the corresponding relay link quality;

If the quality of the relay link satisfies the predetermined condition, confirm that the site at the resource location is its neighbor site.

The embodiment of the present invention also provides a site detection device, including a scanning unit, a synchronization unit, a receiving unit, a signal analysis unit and a storage unit:

The scanning unit is used for downlink channel scanning;

The synchronization unit is used to synchronize with the site scanned by the scanning unit;

The receiving unit is used to receive the signal transmitted by the transmitting site synchronized by the synchronizing unit;

The signal analyzing unit is used to analyze the signal received by the receiving unit;

The storage unit is configured to store the site identifier of the transmitting site in the neighbor site list according to the result of analyzing the received signal by the signal analyzing unit.

It can be seen from the above technical solutions provided by the embodiments of the present invention that by scanning the downlink channel and synchronizing with the scanned signal, when the RS receives the signal transmitted by other stations, if the identification of the transmitting station can be extracted from the signal , you can get its neighbor sites; RS can also evaluate the quality of the relay link according to the received signal when receiving service data transmitted by other sites, so as to get its neighbor sites. To sum up, through the technical solutions provided by the embodiments of the present invention, the relay station can detect its neighbor stations.

Description of drawings

Fig. 1 is a structural diagram of a multi-hop relay communication system in the prior art;

Fig. 2 is a topological structure diagram of a multi-hop relay communication system in the prior art;

FIG. 3 is a structural diagram of a multi-hop relay frame in an embodiment of the present invention;

FIG. 4 is a topology diagram of another multi-hop relay system in an embodiment of the present invention;

FIG. 5 is a schematic diagram of a multi-hop relay frame structure corresponding to the multi-hop relay topology in FIG. 4 in an embodiment of the present invention;

FIG. 6 is a flowchart of Embodiment 1 of the present invention;

Fig. 7 is a flowchart of Embodiment 3 of the present invention;

Fig. 8 is a flowchart of Embodiment 5 of the present invention;

Fig. 9 is an example diagram in which the detection class is 4 in the embodiment of the present invention;

Fig. 10 is a schematic diagram of a detection window in an embodiment of the present invention;

Fig. 11 is a flowchart of Embodiment 7 of the present invention;

Fig. 12 is a flow chart of Embodiment 8 of the present invention;

Fig. 13 is a structural diagram of a nine-site detection device according to an embodiment of the present invention;

Fig. 14 is a structural diagram of a ten-site detection device according to an embodiment of the present invention;

15 is a structural diagram of an eleventh site detection device according to an embodiment of the present invention;

Fig. 16 is a structural diagram of a site detection device according to Embodiment 12 of the present invention.

Detailed ways

Taking the WiMAX (Worldwide Interoperability for Microwave Access, Worldwide Interoperability for Microwave Access) system as an example, the specific implementation of the present invention will be described below. It can be understood that the solution of the present invention has universal applicability and is not limited to the WiMAX system.

Before describing the embodiment of the present invention, an example of the frame structure of communication data and its cooperative application between stations at all levels is firstly given. For the convenience of description, this data frame is called a multi-hop relay frame.

As shown in FIG. 3 , the multi-hop relay frame includes a downlink subframe and an uplink subframe. The downlink subframe further includes a downlink terminal subframe (ADL) and a first relay subframe (FRL), and the uplink subframe further includes an uplink terminal subframe (AUL) and a second relay subframe (SRL); ADL and AUL are respectively the same as traditional The uplink subframe and downlink subframe in the Orthogonal Frequency Division Multiple Access (OFDMA) frame defined in the IEEE 802.16 standard adopted by the air interface of the WiMAX system are the same; ADL and AUL are collectively referred to as terminal subframes, which are used for uplink data between MSs and downlink data reception and transmission; FRL and SRL are collectively referred to as relay subframes, which are used for data transmission between RSs and between RSs and BSs.

Wherein, the ADL includes a frame header (that is, A in the figure) and downlink service burst data. The frame header contains preamble (Preamble) and time-frequency resource allocation information, which includes frame control header (FCH), downlink mapping (DL_MAP), uplink mapping (UL_MAP), downlink channel description (DCD), uplink channel description (UCD) and other broadcast messages describing the contents of the frame. The preamble is used for time-frequency synchronization between MS and BS or between MS and RS; and the time-frequency resource allocation information reflects the time-frequency resource position of user data in the downlink subframe and uplink subframe, and the terminal can use this information to Know which downlink business bursts you should receive data from, and which uplink business bursts you should use to send your own data.

Between the downlink subframe and the uplink subframe is inserted the time interval TTG from the transmission state to the reception state, which is the time interval for the BS or RS to switch from the transmission state to the reception state; the uplink subframe and the next downlink subframe A time interval RTG for switching from the receiving state to the transmitting state is inserted between them, which is the time interval for the BS or RS to switch from the receiving state to the transmitting state.

Referring to the topology of the multi-hop relay system shown in Figure 4, RS1 is the first-hop relay station cascaded with BS, RS2 is the second-hop relay station cascaded with RS1, MS0, MS1, and MS2 respectively represent the MSs served by RS1 and RS2; in order to realize multi-hop relay, the interleaving of the sending and receiving states of the relay transmission frames of the cascaded relay stations is set. For RSs with the same multi-hop parity, the sending and receiving states of the relay subframes are the same, The RSs with opposite parity are jumped, and the sending and receiving states of the relay subframes are interleaved. Figure 5 is a schematic diagram of a multi-hop relay frame structure corresponding to the multi-hop relay topology shown in Figure 4; The state of /SRL is receive/transmit, and the state of FRL/SRL of RS2 cascaded with R1 is send/receive. When a relay subframe is in a transmitting state, it is called a relay transmitting subframe, and when it is in a receiving state, it is called a relay receiving subframe. The relay transmission subframe includes not only transmission data, but also a relay frame header (that is, R in FIG. 5 ). The relay frame header includes the identifier of the RS or BS and the resource location used by the RS or BS to send data. The position of the relay frame header in the relay transmission subframe can be predefined, or it can be dynamically allocated by the system when the RS or BS accesses the system, as long as different relay frame headers do not interfere with each other or interfere very little. It only needs to be small, and the upper and lower cascaded RSs can find the relay frame header. For the RS, when the relay subframe is in the transmitting state, it includes sending downlink data to the lower-level relay station, and sending uplink data to the higher-level relay station or the base station.

The specific embodiments of the present invention are described below on the basis of the above-mentioned multi-hop relay frame.

Embodiment 1. In this embodiment, after the MS detects its neighbor sites through neighbor scan, it reports its neighbor site list to the RS or BS serving it; since the MS's neighbor sites serve the MS Interfering stations of the RS or BS, the RS or BS synthesizes the results reported by the MSs in the coverage area to obtain a set of interfering stations. Wherein, the MS's neighboring cell site mainly refers to the BS and/or RS adjacent to the site in space except the BS or RS currently serving the MS, and the site can receive information from the adjacent BS and/or RS. Or the signal transmitted by RS. Neighboring cell scanning mainly refers to the process of MS detecting neighboring cells, that is, adjusting its receiving parameters to see if it can receive other BSs or RSs except the currently serving BS or RS. Referring to Figure 6, including:

A1. The MS sends a neighbor scan request message (MOB_SCN_REQ) to the BS or RS serving it.

A2. If the BS or RS agrees that the MS performs neighbor cell scanning, it returns a neighbor scan request response message (MOB_SCN_RSP) to the MS, notifying the MS that it can start scanning neighboring cells.

In the present invention, the BS can also actively send the MOB_SCN_RSP message to the MS as needed, informing the MS to scan neighboring cells.

A3. The MS scans neighboring cells, and synchronizes with the scanned stations through Preamble.

A4. The MS receives the signal transmitted by the transmitting site performing synchronization, identifies the information of the transmitting site according to the Preamble in the terminal subframe, and/or extracts the identifier of the transmitting site from the DCD.

A5. If the transmitting site does not exist in the list of neighboring cell sites of the MS, add the transmitting site into the list; otherwise, directly execute step A6.

A6. Determine whether to continue to scan neighboring cells, if continue to scan, return to step A3; otherwise, continue to execute A7.

A7. The MS sends a neighbor scan report message (MOB_SCN_REP) to the BS or RS serving it, and reports the list of neighboring cell sites to the BS or RS serving it;

A8. The BS or RS updates its interference site list according to the neighbor cell site list reported by the MS.

Since the identity of the interfering station can be obtained through the subframe of the terminal, this embodiment is applicable to both traditional MSs that can identify the OFDMA frame format or MSs that can identify the multi-hop relay frame format.

Embodiment 2 of the present invention is similar to Embodiment 1, except that the MS extracts the identifier of the transmitting station in the relay subframe after receiving the signal transmitted by the synchronization station. Specifically, modify step A4 accordingly:

A4a: The MS receives the signal transmitted by the transmitting station performing synchronization, and extracts the identity of the station from the relay subframe.

Since the identifier of the interfering station is to be extracted from the relay subframe, this embodiment is applicable to a new type of MS that can identify the relay subframe; when the station identifier carried in the relay subframe is shorter than the station identifier carried in the terminal subframe, the MS sends The amount of data reported by the BS or RS will be relatively small, which can save air interface resources.

In addition to obtaining its own set of interference sites according to the report of the MS, the RS can also obtain a set of interference sites and a set of neighbor sites through its own scanning and detection.

In the present invention, the RS may perform detection before starting the relay function, or may perform detection during the relay process after starting the relay function, and the two cases will be described respectively below.

Embodiment 3 In this embodiment, the RS scans first after starting up and before starting the relay function to search for its neighbor sites and/or interference sites, and reports the detection result to the BS after starting the relay function. Referring to Figure 7, including:

B1. The RS scans downlink channels, and synchronizes with the scanned stations through the Preamble.

B2. The RS receives the signal transmitted by the synchronized transmitting site.

B3. Extract the identifier of the transmitting site from the signal. If the extraction is successful, confirm that the site is a neighbor site of the RS; otherwise, perform B7.

The signal received by the RS includes a terminal subframe and a relay subframe. The RS can extract the identifier of the transmitting site from the Preamble and DCD through the terminal subframe, or extract the identifier of the transmitting site from the relay frame header through the relay subframe.

B4. If the transmitting site does not exist in the neighbor site list of the RS, add the transmitting site into the neighbor site list; otherwise, directly execute step B5.

For the RS, since its neighbor station belongs to the interference station set, if the station does not exist in the interference station list, it will also be added to the interference station list.

B5. Determine whether to continue to scan the downlink channel, if continue to scan, return to step B1; otherwise, continue to execute B6.

B6. Select a suitable station to access the system, and report the list of neighbor stations and/or interference stations to the BS after starting the relay function, and end the procedure.

B7. The RS extracts the resource position occupied by the signal, and evaluates the energy of the signal.

B8. Determine whether the energy of the signal exceeds a predetermined threshold, and if it exceeds the predetermined threshold, determine that the transmitting site is an interference site of the RS; otherwise, perform step B5.

B9. Report the resource location used by the transmitting site to the superior station, and request the superior station to return the identifier of the station using the resource location.

B10. The upper-level site identifies the resource location. If it cannot identify the site using the resource location, it continues to report until it reports to the upper-level site that can identify the site using the resource location.

B11. The upper-level site returns the site identification using the resource location to the RS level by level.

B12. If the station does not exist in the interfering station set of the RS, add the station to the interfering station list, and execute step B5; otherwise, directly execute B5.

In practical applications, if you only need to detect the interference site and do not need to detect the neighbor site, you can directly execute B7 without executing B3 after the above B2; if you only need to detect the neighbor site and do not need to detect the interference site, then do not execute B7 to B12.

In a multi-hop relay communication system, the owner of the RS may be an operator or a user. For the RS whose ownership belongs to the operator, its main function is to be used as a relay, and this kind of RS can be regarded as a dedicated relay station; while the RS whose ownership belongs to the user can actually be regarded as a terminal with dual functions. This type of relay station needs to be configured as a relay station mode or a terminal mode. When configured as a terminal mode, the functions of the RS cover the functions of the terminal. If some functions of the RS are suspended, the RS behaves like same as the terminal. For example, a user relay station can be placed near the window of the office, and the relay station provides relay services for the user terminals in the office, which can save the battery consumption of the user terminals and possibly provide users with higher throughput.

The solution described in the third embodiment above is applicable to a dedicated relay station and a user relay station configured in relay station mode. For user relay stations configured in terminal mode, before starting the relay function, they can continue to detect when idle, and update when the set of neighbor stations and/or the collection of interference stations changes, the process and implementation of detection and update The process in Example 3 is the same.

In the third embodiment, the RS can detect the neighboring stations that have already connected to the system by continuously searching the terminal subframe and/or the relay subframe. However, when the detection is only performed before the RS accesses the system, other stations in the system cannot discover the RS; in addition, if multiple RSs in the system are in the detection state before accessing the system, they cannot discover each other. Therefore, other mechanisms are needed to ensure the integrity of the detection.

After the RS activates the relay function, its terminal subframe is fixed to serve the MS, and the timing of sending and receiving the terminal subframes of all RSs and BSs is the same, which cannot be used for mutual discovery; are interleaved with each other, so this feature can be used to detect neighbor sites and/or interference sites; for the detection of neighbor sites, the method is: during the relay process, the RS listens in the relay receiving subframe, because of this When the stations with the opposite multi-hop parity are in the transmitting state, the RS can detect the relay subframes of these stations, and extract the station identifiers from the detected relay subframes to obtain the neighbor stations with the opposite multi-hop parity ; If the RS listens in the relay transmission subframe, since the station with the same multi-hop parity is in the transmitting state at this time, the RS can detect the relay subframe of the station with the same multi-hop parity, thus obtaining the same multi-hop parity Hop the neighbor sites with the same parity; when the two are combined, you can get all the neighbor sites. For the detection of interference sites, since the neighbor sites of the RS are also interference sites, the above method for detecting neighbor sites is also applicable to the detection of interference sites. The above situations are described respectively below.

Embodiment 4. According to this embodiment, after the RS starts the relay function, it detects and acquires neighboring stations and/or interfering stations whose multi-hop parity is opposite to that of the RS. Its implementation is similar to Embodiment 3, the difference is that: since the RS detects after the relay function is activated, all the terminal subframes of the RS and the BS are used to serve the MS at this time, so the RS can only be used in the relay subframe. Therefore, only the relay subframe of the signal can be received, and then neighbor stations and/or interference stations can be obtained according to the relay subframe. Specifically, modify steps B2 and B3 accordingly:

B2a. The RS receives the relay transmission subframe from the synchronized transmission site in the relay reception subframe;

B3a. Search the relay frame header from the relay transmission subframe, and extract the identifier of the transmitting site. If the extraction is successful, confirm that the site is a neighbor site of the RS; otherwise, perform B7.

In practical applications, if you only need to detect the interference site and do not need to detect the neighbor site, you can directly execute B7 without executing B3a after the above B2a; if you only need to detect the neighbor site and do not need to detect the interference site, then do not execute B7 to B12.

The following several embodiments are used to obtain neighboring sites and/or interfering sites with the same multi-hop parity. As mentioned above, the RS listens in the relay transmission subframe, that is, it can detect the relay subframe of the station with the same multi-hop parity, and obtain the neighbor station with the same multi-hop parity; therefore, RS can be set In the relay transmission subframe, the transmission of the relay frame header is suspended, and it is used to continuously monitor the relay frame headers of other stations. For the convenience of description, this mode is referred to as the transmission subframe detection mode hereinafter. In the transmit subframe listening mode, the RS mainly listens to the relay frame header, but can further obtain more accurate relay link quality information by listening to the RL-MAP and transmission data blocks. In addition, an RS listening in this mode does not transmit a relay frame header, so cannot transmit independent relay data, but can transmit cooperative relay data.

In order to prevent multiple relay stations from being in the listening state of the transmitting subframe at the same time and being unable to discover each other, it is necessary to control the continuous listening of the transmitting subframe, for example, to control that only one RS is in the listening state at the same listening moment. In addition, when an RS determines to start the continuous listening mode of transmitting subframes, it must inform its previous hop and next hop nodes several frames in advance, when the previous hop and next hop nodes receive the RS start listening mode After notification of the message, the data or message sent to the RS is adjusted to ensure that the RS has no data or message that must be sent independently at the time of listening.

In practical applications, the BS can coordinate and control whether each RS in the system starts the transmission subframe continuous listening mode; for an RS, the RS can send a request for continuous listening to the BS, or the BS can send a request for continuous listening to the BS according to each RS in the system. The state of the RS actively sends a message suggesting listening to the RS.

Embodiment 5. In this embodiment, the BS actively sends a suggested listening parameter to the RS, and the RS starts listening according to the parameter, and detects neighboring stations with the same multi-hop parity, and/or interfering stations, referring to FIG. 8 , including The following flow.

C1. The BS actively sends a relay interception request response message to the RS, which carries the interception parameter values suggested by the BS to the RS; the interception parameters include the start interception frame number and the number of continuous interception frames; The listening frame number indicates the multi-hop relay frame that starts the transmitting subframe listening mode. For the convenience of description, the multi-hop relay frame starting the sending subframe listening mode is referred to as the starting listening frame.

C2. The RS judges whether to conduct interception according to the interception parameter value suggested by the BS. If interception is performed, it sends a relay interception notification information entity containing the interception parameter value to the upper-level and lower-level stations of the RS; otherwise, it notifies The BS cannot perform interception according to the suggested interception parameter value, and the procedure ends.

C3. The upper-level and lower-level stations of the RS adjust the communication data to be sent to the RS according to the parameter value, so as to ensure that the RS has no data or messages that must be sent independently at the time of listening.

C4. Start the transmit subframe listening mode in the start listening frame suggested by the BS.

C5. Pause the transmission of the relay frame header in the relay transmission subframe, and monitor the relay frame headers transmitted by other stations.

C6. Extract the identifier of the transmitting site from the relay frame header. If the extraction is successful, confirm that the site is a neighbor site of the RS; otherwise, execute C11.

C7. If the confirmed neighbor site does not exist in the neighbor site list of the RS, add the neighbor site to the neighbor site list; otherwise, directly execute C8.

For the RS, since its neighbor site belongs to the interference site set, if the neighbor site does not exist in the interference site list, it will also be added to the interference site list.

C8. Determine whether the number of monitored frames has reached the number of continuous listening frames suggested by the BS. If not, return to step C5 and continue to monitor the next frame; otherwise, execute step C9.

C9. Determine whether to report the neighbor site list and/or the interference site list to the BS, and if so, report to the BS; otherwise, directly execute C10.

C10. Resume the normal communication mode before the transmitting subframe interception, and end the process.

C11. Extract the resource position occupied by the signal, and evaluate the energy of the signal.

C12. Determine whether the energy of the signal exceeds a predetermined threshold, and if it exceeds the predetermined threshold, determine that the transmitting site is an interference site of the RS; otherwise, perform step C8.

C13. The RS reports the resource location used by the interfering station to its superior station, and requests the superior station to return the site identifier of the interfering station using the resource location;

C14. The upper-level station identifies the resource location, and if the interfering station using the resource location cannot be identified, it continues to report until it reports to an identified upper-level station.

C15. The identifiable upper-level station returns the station identifier of the interfering station using the resource location to the RS step by step.

C16. If the interfering station does not exist in the interfering station set of the RS, add the interfering station into the interfering station list, and execute step C8; otherwise, directly execute C8.

In practical applications, if you only need to detect interference sites, but not neighbor sites, you can directly execute C11 without executing C6 after the above C5; if you only need to detect neighbor sites and do not need to detect interference sites, then do not execute C11 to C16.

Embodiment 6. In this embodiment, the RS sends a relay interception request to the BS according to the load condition and/or constraint conditions, conducts interception according to the interception parameters negotiated with the BS, and detects its multi-hop parity The same neighbor site, and/or interference site, has the advantage of constraining RS listening parameters, which can reduce the probability of different RSs requesting the same listening parameters to a certain extent, thereby avoiding listening collisions between multiple RSs . Its implementation is similar to that of the fifth embodiment, except that before the RS detects neighbor stations and/or interference stations, there is a negotiation process with the BS on the value of the listening parameter. Specifically, replace C1 to C4 with the following C1a to C8a:

C1a. The RS sends a relay interception request message to the BS, which carries an interception parameter value for the interception request; the interception parameter includes the start interception frame number and the number of continuous interception frames.

Among them, the RS can determine the interception parameter value according to its own load and other conditions; in addition, the system can also set a unified constraint condition to reduce the probability that different RSs request the same interception parameter value, and the RS can determine the interception parameter value according to the constraint condition. parameter value.

C2a, the BS judges whether to allow the RS to intercept according to the requested interception parameter value, if yes, execute step C3a; otherwise, execute step C4a.

C3a. Return to the RS a relay interception request response message indicating that the interception is agreed, and continue to step C5a.

C4a. The BS determines the suggested interception parameter value, and returns a relay interception request response message containing the suggested parameter value to the RS.

When the BS does not agree to the interception of the interception parameter value requested by the RS, it may also return a response message indicating rejection of interception to the RS, and end the procedure.

C5a, RS judges according to the relay interception request response message returned by the BS, if the interception can be performed according to the requested interception parameters, then directly execute step C6a; if the response message returned by the BS contains the suggested interception parameters, then execute Step C7a.

C6a. The RS judges whether to perform interception according to the interception parameter suggested by the BS, and if so, proceeds to step C7a; otherwise, notifies the BS that interception cannot be performed according to the suggested interception parameter value, and ends the procedure.

C7a. Send the relay intercept notification information entity containing the interception parameter value to the upper-level and lower-level stations, and the upper-level and lower-level nodes adjust the communication data to be sent to the RS according to the parameter value, so as to ensure that the RS is listening. Listening Moments has no data or messages that have to be sent separately.

C8a. Start the transmitting subframe listening mode in the determined starting listening frame.

The following uses a specific example to describe how to constrain RS interception parameters to avoid interception collisions among multiple RSs.

Several detection classes are defined in the BS, and each detection class specifies a listening period (hereinafter referred to as the detection window), and the parameters of the detection class include the starting listening frame number and the number of continuous listening frames. The detection parameter may also include a detection period, so that the RS may start monitoring periodically.

Figure 9 shows an example diagram of detection class 4, in which "01" indicates the listening window corresponding to neighbor detection class-I, "02" indicates the listening window corresponding to neighbor detection class-II, and "03" indicates The listening window corresponding to the neighbor detection class-III, "04" indicates the listening window corresponding to the neighbor detection class-IV; it stipulates that the number of continuous listening frames of the four detection classes is K, and the latter detection class The interception start frame of the previous detection class is the frame where the end interception of the previous detection class is located; if the start-up interception frame number of the detection class I is P, the start-up interception frame number of the detection class II is P+K, and the start-up interception frame number of the detection class III The listening frame number is P+2K, and the starting listening frame number of detection class IV is P+3K; 4 detection classes appear periodically, with a period of 4K. It can be understood that this example is a special case given for the convenience of description. In practical applications, the number of continuous listening frames of each detection class can be different, and the listening start frame of the latter detection class can be set before the detection frame of the previous detection class. A frame after the window ends.

After the detection class is defined, the BS can assign an appropriate detection class to the RS when the RS accesses the system or other appropriate time, and constrain the interception parameters of the RS. When the RS sends a relay interception request message to the BS, the BS can The parameter value of the detection class assigned to it is used as the listening parameter value of its request.

When judging whether to allow the RS to intercept according to the requested interception parameter value, the BS can judge whether it is agreed based on the principle that only one of the RSs with the same detection class and the same hop parity is allowed to intercept, and then When the value of the interception parameter requested by the RS is not agreed, the suggested interception parameter value is determined accordingly.

After starting the transmit subframe listening mode, as shown in Figure 10, the RS can arbitrarily select one or more relay transmit subframes within the detection window to listen; "A" in the figure indicates the subframe of the downlink terminal, and "B " indicates the relay transmission subframe, "C" indicates the uplink terminal subframe, and "D" indicates the relay reception subframe.

Table 1 to Table 3 below provide an example of the relay interception request message, the relay interception request response message and the relay interception notification message mentioned in the above-mentioned embodiments.

Table 1 Relay listener request message

Syntax Bits Description (Comments) RL-DET_REQ() Relay link neighbor listening IE { Message type 8 Relay message type code Start_frame 16 The frame number to start listening Frame_number 2 The number of frames for continuous monitoring (1, 2, 3, 4) Padding Padding bits so that the entire IE contains integer bytes }

Table 2 Relay listening request response message

Syntax Bits Description (Comments) RL-DET_RSP() Relay link neighbor listening IE { Message type 8 Relay message type code State 2 00: Agree to listen/01: Suggest to listen/10: Refuse to listen

if(State＝01) 16 Give suggested listening parameters { Start_frame 16 The frame number to start listening Frame_number 2 The number of frames for continuous monitoring (1, 2, 3, 4) } Padding Padding bits so that the entire IE contains integer bytes }

Table 3 Relay interception notification information entity

Syntax Bits Description (Comments) RL-DET_IE() Relay link neighbor listening IE { RIUC 4 Relay information entity identification code Length 8 The length of this IE Start_frame_offset 4 Start listening frame number ( ) Frame_number 2 The number of frames for continuous monitoring (1, 2, 3, 4) Padding Padding bits so that the entire IE contains integer bytes }

In the above embodiments, the neighbor stations with the same multi-hop parity and/or interfering stations are detected by listening at the header of the relay frame in the relay transmission subframe; in addition, the RS can also remove the relay station in the relay transmission subframe. Listen to a certain resource position other than the frame header (hereinafter referred to as the listening window) to detect neighboring stations with the same parity. When selecting the listening window, one should choose a period that does not overlap with the RS transmission resources, that is, the period when the RS does not need to send data, and should also comprehensively consider the influence of factors such as the target node’s sufficient transmission energy or data, the conversion time of sending and receiving, and signal synchronization; , the selection of the listening window can also be restricted according to the constraints set by the system (such as the detection class mentioned above).

Embodiment 7. In this embodiment, the RS chooses to start the listening window at a certain period of the relay transmission subframe, and detects neighboring sites with the same multi-hop parity. Referring to FIG. 11 , it includes:

D1. Determine the position of the listening window in the relay transmission subframe, switch to the receiving state within the listening window, and monitor the service data transmitted by other stations.

The RS may choose to listen in a listening window of a certain relay transmission subframe, or may choose to listen in several consecutive relay transmission subframes.

D2. Analyze the received service data, extract the resource location occupied by the transmitting site, evaluate the quality of the corresponding relay link, and obtain the energy of the data.

D3. Judging whether the data energy exceeds a predetermined threshold value, if it exceeds the predetermined threshold value, determine that the service data is transmitted by its neighboring site; otherwise, restore the normal mode and end the process.

D4. Report the resource location used by the transmitting site to the superior site, and request the superior station to return the identifier of the site using the resource location.

D5. The upper-level site identifies the resource location, and if it cannot identify the site using the resource location, it continues to report until it reports to the upper-level site that can identify it.

D6. The superior station returns the station identifier using the resource location to the RS step by step.

If the upper-level site only returns one site ID, it means that the user of the resource has been found; because there is a situation where the upper-level site allocates the resource to other non-RS interfering sites at the same time, when the upper-level site returns multiple site IDs, the RS needs Continue to listen through the listening window, and judge which station is the interference station based on the results of multiple times.

While returning the station identifier, the upper-level station can also provide the RS with a suggestion on the location of the resource to listen to next time.

D7. Judging whether the quality of the relay link satisfies the predetermined condition, if the condition is met, confirm that the site is a neighbor site of the RS; otherwise, confirm that the site is only an interference site of the RS, and execute D10.

D8. If the station does not exist in the neighbor station list of the RS, add the station to the neighbor station list; otherwise, directly execute step D9.

For the RS, since its neighbor station belongs to the interference station set, if the station does not exist in the interference station list, it will also be added to the interference station list.

D9. Report the updated neighbor site list and/or interference site list to the BS, restore the normal mode, and end the procedure.

D10. If the station does not exist in the interfering station set of the RS, add the station to the interfering station list, and execute step D9; otherwise, directly execute D9.

In the seventh embodiment above, the RS chooses to start listening at a certain period of the relay transmission subframe, because it may be necessary to transmit the listening results and feedback messages between stations at all levels when determining the station identity using the resource location. As a result, consumption of system resources may occur. In order to improve the efficiency of neighbor detection and save system resources, the BS can also provide the RS with interception suggestions such as the site identification and resource location information that have been connected to the network and the relay resources allocated by each RS, so that the RS can Conduct purposeful listening. Referring to Figure 12, the eighth embodiment corresponding to this includes the following steps:

E1. The BS provides the RS with an interception suggestion including the interception site identifier and the location information of the interception resource according to the RSs connected to the network and the relay resources allocated by each RS.

E2. The RS switches to a receiving state at the listening resource location, and if a signal is received at the resource location and the energy of the signal exceeds a predetermined threshold, it confirms that the listening station provided by the BS is its interference station.

E3. Analyze the received service data, and evaluate the corresponding relay link quality.

E4. Judging whether the quality of the relay link satisfies a predetermined condition, if the condition is met, determine that the site is a neighbor site of the RS; otherwise, confirm that the site is only an interference site of the RS, and execute E7.

E5. If the station does not exist in the neighbor station list of the RS, add the station to the neighbor station list; otherwise, directly execute step E6.

For the RS, since its neighbor station belongs to the interference station set, if the station does not exist in the interference station list, it will also be added to the interference station list.

E6. Report the updated neighbor site list and/or interference site list to the BS, restore the normal mode, and end the process.

E7. If the station does not exist in the interfering station set of the RS, add the station to the interfering station list, and execute step E6; otherwise, directly execute E6.

In this embodiment, other criteria can be used to determine whether the listening site is an interference site or a neighbor site. If the same type of criteria is used as a condition, different thresholds can be set to determine whether it is an interference site or a neighbor site.

The above-mentioned embodiment 4 describes an example in which the RS obtains a neighbor station whose multi-hop parity is opposite to that of the RS, and/or an interfering station. Embodiments 5 to 8 provide that the RS obtains a neighbor station whose multi-hop parity is the same, and and/or instances of interfering sites. It can be understood that Embodiment 4 can also be applied in combination with Embodiment 5 to Embodiment 8 respectively, and the RS can monitor respectively in the relay receiving subframe and the relay transmitting subframe of the same multi-hop relay frame, Monitoring can also be performed on relay receiving subframes and relay transmitting subframes of different multi-hop relay frames, both of which can realize the detection of neighbor sites and/or interference sites.

It can be understood that the solution provided by the present invention is also applicable when the BS detects its neighbor sites or interference sites.

In more embodiments of the present invention, the relay station or the base station can also regularly check the interference station and/or the station in the neighbor station list, and delete the station from the corresponding list when the station no longer satisfies the interference/neighbor conditions The site identification and checking methods are similar to the schemes for detecting interfering sites and/or neighbor sites in the above embodiments.

Embodiment 9, a site detection device, referring to FIG. 13 , includes a scanning unit 100, a synchronization unit 110, a receiving unit 120, a signal analysis unit 130, and a sending unit 140; wherein:

The scanning unit 100 is used for performing adjacent cell scanning;

The synchronization unit 110 is used for synchronizing with the sites scanned by the scanning unit 100;

The receiving unit 120 is configured to receive signals transmitted by the transmitting sites synchronized by the synchronizing unit 110;

The signal analyzing unit 130 is used for analyzing the signal received by the receiving unit 120, and extracting the identification of the site from the signal;

The sending unit 140 is configured to send the station identifier extracted by the signal analysis unit to a relay station or a base station serving the local station detection device when the station identifier is extracted successfully.

The site detection device described in this embodiment can be integrated in the mobile station, and the site detection can be performed by using the method in Embodiment 1 or Embodiment 2.

In more embodiments of the present invention, the above signal analysis unit may specifically include a data frame extraction unit and an identification extraction unit: the data frame extraction unit is used to extract the terminal subframe or relay subframe from the received signal; the identification The extracting unit is configured to correspondingly extract the station identifier from the terminal subframe or the relay subframe.

Embodiment 10. A site detection device, referring to FIG. 14 , includes a scanning unit 200, a synchronization unit 210, a receiving unit 220, a signal analysis unit 230, and a storage unit 240;

The scanning unit 200 is used for downlink channel scanning;

The synchronization unit 210 is used for synchronizing with the sites scanned by the scanning unit 200;

The receiving unit 220 is configured to receive signals transmitted by the transmitting sites synchronized by the synchronizing unit 210;

The signal analysis unit 230 is used to analyze the signal received by the receiving unit 220; including an identification extraction unit 250, which is used to extract the identification of the transmitting site from the signal;

The storage unit 240 is configured to store the station identifier extracted by the signal analyzing unit 230 in the neighbor station list and/or the interference station list when the station identifier extraction is successful.

Embodiment 11. A site detection device, referring to FIG. 15 , includes a scanning unit 300, a synchronization unit 310, a receiving unit 320, a signal analysis unit 330, and a storage unit 340;

The scanning unit 300 is used to perform downlink channel scanning;

The synchronization unit 310 is used for synchronizing with the sites scanned by the scanning unit 300;

The receiving unit 320 is configured to receive signals transmitted by the transmitting sites synchronized by the synchronizing unit 310;

The signal analysis unit 330 is used to analyze the signal received by the receiving unit; including a link quality evaluation unit 350, which is used to evaluate the corresponding relay link quality according to the signal received by the receiving unit;

The storage unit 340 is configured to store the identifier of the transmitting site in the neighbor site list and/or the interference site list when the quality of the relay link satisfies a predetermined condition.

Embodiment 12. A site detection device, referring to FIG. 16 , includes a scanning unit 400, a synchronization unit 410, a receiving unit 420, a signal analysis unit 430, and a storage unit 440;

The scanning unit 400 is used for downlink channel scanning;

The synchronization unit 410 is used for synchronizing with the sites scanned by the scanning unit 400;

The receiving unit 420 is configured to receive signals transmitted by the transmitting sites synchronized by the synchronizing unit 410;

The signal analysis unit 430 is used to analyze the signal received by the receiving unit 420; it includes a link quality evaluation unit 450, a resource location extraction unit 460, a resource location reporting unit 470, and an identification acquisition unit 480:

The link quality evaluation unit 450 is configured to evaluate the corresponding relay link quality according to the signal received by the receiving unit 420;

The resource position extracting unit 460 is configured to extract the resource position occupied by the signal from the signal received by the receiving unit 420;

The resource location reporting unit 470 is used to report the signal occupancy resource location information extracted by the resource location extraction unit 460 to the upper base station or upper relay station of the site detection device;

The identification obtaining unit 480 is configured to receive the transmission site identification corresponding to the resource location information returned by the upper base station or the upper relay station;

The storage unit 440 is configured to store the identifier of the transmitting site in the neighbor site list and/or the interference site list when the quality of the relay link satisfies a predetermined condition.

The site detection device described in the tenth to twelve embodiments above may be integrated in a relay station or in a base station; when integrated in a relay station, the device may also include a sending unit, which is used to list the neighbor sites , and/or report the interference site list to the base station to which the relay station belongs.

Embodiment 13. A site detection device, the structure of which is similar to Embodiment 11, including a scanning unit, a synchronization unit, a receiving unit, a signal analysis unit and a storage unit;

The scanning unit is used for downlink channel scanning;

The synchronization unit is used to synchronize with the site scanned by the scanning unit;

The receiving unit is used to receive the interception suggestion provided by the base station to which the device belongs, including the interception site identification and the interception resource location information; it is also used to perform interception at the interception resource location, and receive the transmission synchronized by the synchronization unit Signals emitted by the Site;

The signal analysis unit is used to analyze the signal received by the receiving unit; specifically, it includes a link quality evaluation unit, which is used to evaluate the corresponding relay link quality according to the signal received by the receiving unit;

The storage unit is configured to store the interception station identifier included in the interception suggestion received by the receiving unit in the neighbor station list and/or the interference station list when the quality of the relay link satisfies a predetermined condition.

In addition, the device may further include a sending unit, configured to report the neighbor site list and/or the interference site list to the base station to which the device belongs.

The device for detecting a station described in Embodiment 13 may be integrated in a relay station.

In summary, the embodiments provided by the present invention can achieve the following effects:

In the present invention, after the MS detects its neighbor sites by scanning, it reports its neighbor site identification list to the RS or BS serving it; since the MS's neighbor sites are the interference of the RS or BS serving The station, RS or BS synthesizes the results reported by the MSs in the coverage area to obtain a set of interfering stations. Wherein, the MS can extract the identifier of the transmitting station from the received terminal subframe of the signal transmitted by the synchronized station, and can also extract the identifier of the transmitting station from the relay subframe of the transmitted signal. Therefore, the present invention The embodiments are applicable to both traditional MSs that can recognize the OFDMA frame format and MSs that can recognize the multi-hop relay frame format. When the station identifier carried in the relay subframe is shorter than the station identifier carried in the terminal subframe, the amount of data when the MS reports to the BS or RS will be correspondingly smaller, and the transmitting station identifier is extracted from the relay subframe of the transmitted signal Air interface resources can be saved.

In the present invention, in addition to reporting by the MS, the RS can also scan the downlink channel by itself to detect its interference sites and/or neighbor sites: by evaluating the energy of the received signals transmitted by the synchronized sites , can detect its interference site; when receiving the signal transmitted by the synchronized site, if the identity of the transmitting site can be extracted from the signal, its neighbor site can be obtained; RS can also receive other sites When transmitting business data, evaluate the quality of the relay link according to the received signal to obtain its neighbor sites.

The above scheme of RS detecting its interfering sites and/or neighboring sites is applicable to the situation of dedicated relay stations and relay stations owned by users; RS can detect before starting the relay function, by sub-frame of the terminal, and/or The continuous search of the relay subframe, at this time, can detect the neighbor stations that have already connected to the system; however, when the detection is only performed before the RS accesses the system, other stations in the system cannot find the RS; in addition, if the RS in the system If multiple RSs are in the detection state before accessing the system, they cannot discover each other; therefore, the present invention also provides a solution for detecting during the relay process after starting the relay function, which can ensure the integrity of the detection.

In the present invention, the RS can also intercept according to the suggestion of the BS, and detect its neighbor sites and/or interference sites. Since the RS interception is carried out with the assistance of the BS, blind interception is avoided, thereby improving Interception efficiency; in addition, the RS can also send a relay interception request to the BS according to the load situation and/or constraints, and intercept according to the interception parameters negotiated with the BS, and the detection is the same as its multi-hop parity Neighboring sites and/or interfering sites, the advantage is that due to the constraints on RS listening parameters, the probability of different RSs requesting the same listening parameters can be reduced to a certain extent, thereby avoiding listening collisions among multiple RSs.

Above, the interference site detection method, neighbor site detection method and site detection device provided by the present invention have been introduced in detail. In this paper, specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for To help understand the method of the present invention and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and scope of application. In summary, the content of this specification It should not be construed as a limitation of the invention.

Claims (38)

1. A method for detecting an interference site, comprising: The mobile station MS scans and synchronizes with the scanned stations; receiving a signal transmitted by the synchronized station, and extracting the identifier of the synchronized station from the signal; If the extraction is successful, the station identifier is reported to the base station BS or relay station RS serving the MS. 2. interference site detection method as claimed in claim 1, is characterized in that, The mobile station MS scans, and before synchronizing with the scanned station, it also includes: the BS or RS notifies the MS in its service area to start scanning; Or the MS sends a scan request to the BS or RS serving it, and the BS or RS judges whether to allow the MS to scan, and if yes, notifies the MS to start the scan. 3. The interfering station detection method according to claim 1, wherein after reporting the station identifier to the BS or RS serving the MS, it further comprises: the BS or RS updates itself according to the received station identifier list of interfering sites. 4. The interference site detection method according to claim 1, 2 or 3, wherein said extracting the identity of the transmitting site from said signal specifically comprises: from the terminal subframe or relay subframe of said signal Extract the identity of the launch site from . 5. A method for detecting an interference site, comprising: RS receives signals transmitted by other stations; Estimate the energy of the signal; If the signal energy exceeds the predetermined threshold, it is determined that the transmitting site is an interference site of the RS. 6 . The method for detecting an interfering station according to claim 5 , wherein the RS receiving signals transmitted by other stations specifically comprises: the RS receiving signals transmitted by other stations in a relay receiving subframe. 7 . 7. The method for detecting an interfering station according to claim 5, wherein the RS receiving signals transmitted by other stations specifically comprises: the RS suspends transmission in the relay transmission subframe, and receives signals transmitted by other stations. 8. the interference site detection method as claimed in claim 7, is characterized in that, Before the RS pauses transmission in the relay transmission subframe and receives signals transmitted by other stations, the RS also includes: the RS determines the listening parameter value; The RS suspending transmission in the relay transmission subframe specifically includes: the RS suspending transmission in the relevant relay transmission subframe according to the determined listening parameter value. 9. interference site detection method as claimed in claim 7, is characterized in that, The RS also includes: The RS determines the listening parameter value, and sends the parameter value to the BS; If the BS agrees that the RS intercepts according to the requested parameter value, it returns to the RS a relay intercept request response message indicating that it agrees to intercept; otherwise, it returns a relay intercept request response message carrying a suggested intercept parameter value to the RS; The RS suspending transmission in the relay transmission subframe specifically includes: the RS suspends transmission in the relevant relay transmission subframe requested by itself or suggested by the BS according to the relay listening request response message returned by the BS. 10. The interfering site detection method according to claim 9, wherein if the BS agrees that the RS intercepts according to the requested parameter value, it returns to the RS a relay interception request response message indicating that it agrees to intercept ; Otherwise, return to the RS a relay interception request response message carrying a suggested interception parameter value, specifically including: The BS judges whether there are other RSs with the same multi-hop parity as the RS requesting the same listening period, and if not, agrees to the RS to listen according to the requested parameter value, and returns to the RS a relay intercept indicating that it agrees to intercept. A listening request response message; otherwise, the BS determines the suggested interception parameter value, and returns a relay interception request response message carrying the suggested interception parameter value to the RS. 11. the interfering site detection method as claimed in claim 7, is characterized in that, Before the RS suspends transmission in the relay transmission subframe and receives signals transmitted by other stations, the BS further includes: the BS determines the value of the listening parameter, and provides the RS with a listening suggestion including the parameter value; Suspension of transmission by the RS in the relay transmission subframe specifically includes: the RS judges whether to conduct interception according to the interception parameter value suggested by the BS, and if interception is performed, suspends transmission in the relevant relay transmission subframe. 12. The interfering station detection method according to claim 8 or 9, wherein the determination of the listening parameter value by the RS specifically comprises: assign a detection class to the RS, the listening period defined by this detection class is different from the listening period defined by other detection classes; The RS determines the listening parameter value according to the detection class. 13. The interference site detection method according to any one of claims 7 to 11, wherein the RS suspending transmission in the relay transmission subframe specifically includes: the RS suspends the relay frame header in the relay transmission subframe or Transmission of business data. 14. The interfering station detection method according to any one of claims 8 to 11, wherein the interception parameter value specifically includes: start listening frame number and continuous listening frame number or start listening frame number, The listening cycle and the number of continuous listening frames or the location of listening resources. 15. The interfering station detection method according to any one of claims 7 to 11, wherein the RS suspends transmission in the relay transmission subframe and before receiving signals transmitted by other stations: RS sends a relay interception notification information entity containing interception parameter values to its superior and subordinate stations; The upper-level and lower-level stations of the RS adjust the communication data to be sent to the RS according to the listening parameter value. 16. The interference site detection method according to any one of claims 5 to 11, wherein if the signal energy exceeds a predetermined threshold value, determining that the transmitting site is an interference site of the RS further includes : Get the ID of the emission site. 17. The interfering site detection method according to claim 16, wherein said obtaining an identifier specifically comprises: The RS sends a site identification request to the superior site, which includes resource location information used by the transmitting site; The higher-level site identifies the site using the resource location, and if it cannot be identified, it continues to report until it is reported to a higher-level site that can be identified; The upper-level site that can identify the resource location returns the site identifier using the resource location to the RS. 18 . The method for detecting interference sites according to claim 16 , further comprising: updating the list of interference sites according to the obtained site identifications after acquiring the identifiers. 19. A neighbor site detection method, characterized in that, comprising: RS receives signals transmitted by other stations; The identifier of the transmitting site is extracted from the signal, and if the extraction is successful, it is confirmed that the transmitting site is a neighbor site of the RS. 20. The neighbor site detection method according to claim 19, wherein said extracting the identifier of the transmitting site from the signal specifically comprises: extracting the identifier of the transmitting site from the terminal subframe or the relay subframe of the signal logo. 21. The method for detecting neighbor stations according to claim 19, wherein the RS receiving signals transmitted by other stations specifically comprises: the RS receiving signals transmitted by other stations in the relay receiving subframe. 22. The neighbor station detection method according to claim 19, wherein the RS receiving signals transmitted by other stations specifically comprises: the RS suspends transmission in the relay transmission subframe, and receives signals transmitted by other stations. 23. the neighbor site detection method as claimed in claim 22, is characterized in that, Before the RS pauses transmission in the relay transmission subframe and receives signals transmitted by other stations, the RS also includes: the RS determines the listening parameter value; The RS suspending transmission in the relay transmission subframe specifically includes: the RS suspending transmission in the relevant relay transmission subframe according to the determined listening parameter value. 24. neighbor site detection method as claimed in claim 22, is characterized in that, The RS also includes: The RS determines the listening parameter value, and sends the parameter value to the BS; If the BS agrees that the RS intercepts according to the requested parameter value, it returns to the RS a relay intercept request response message indicating that it agrees to intercept; otherwise, it returns a relay intercept request response message carrying a suggested intercept parameter value to the RS; The RS suspending transmission in the relay transmission subframe specifically includes: the RS suspends transmission in the relevant relay transmission subframe requested by itself or suggested by the BS according to the relay listening request response message returned by the BS. 25. neighbor site detection method as claimed in claim 22, is characterized in that, Before the RS suspends transmission in the relay transmission subframe and receives signals transmitted by other stations, the BS further includes: the BS determines the value of the listening parameter, and provides the RS with a listening suggestion including the parameter value; The RS suspending transmission in the relay transmission subframe specifically includes: the RS suspending transmission in the relevant relay transmission subframe according to the listening suggestion of the BS. 26. The neighbor site detection method according to any one of claims 22 to 25, wherein the RS suspends transmission in the relay transmission subframe, specifically comprising: the RS suspends the relay frame header in the relay transmission subframe Or the transmission of business data. 27. The neighbor site detection method according to any one of claims 23 to 25, wherein the listening parameter value specifically includes: start listening frame number and continuous listening frame number or listening period and continuous listening frame number Listen for frame count or listen for resource location. 28. A neighbor site detection method, comprising: RS receives signals transmitted by other stations and evaluates the corresponding relay link quality; If the quality of the relay link satisfies the predetermined condition, confirm that the site at the resource location is its neighbor site. 29. The neighbor station detection method according to claim 28, wherein the RS receiving signals transmitted by other stations specifically comprises: the RS suspends transmission at the determined listening resource position, and receives service data transmitted by other stations. 30. The neighbor site detection method according to claim 29, wherein the RS suspending transmission at the set listening resource position specifically comprises: The RS suspends transmission at its predetermined listening resource position; Or the RS suspends transmission at the listening resource position suggested by the BS. 31. The neighbor site detection method according to claim 30, wherein if the quality of the relay link satisfies a predetermined condition, confirming that the site of the resource location is its neighbor site specifically includes: Evaluate the signal energy of the service data and the corresponding relay link quality, and if the signal energy exceeds a predetermined threshold and the relay link quality satisfies a predetermined condition, confirm that the site using the resource location is its neighbor site. 32. A site detection device, characterized in that it includes a scanning unit, a synchronization unit, a receiving unit, a signal analysis unit and a sending unit: The scanning unit is used to perform neighbor scanning; The synchronization unit is used to synchronize with the site scanned by the scanning unit; The receiving unit is used to receive the signal transmitted by the transmitting site synchronized by the synchronizing unit; The signal analyzing unit is used to analyze the signal received by the receiving unit, and extract the identification of the site from the signal; The sending unit is configured to send the station identifier extracted by the signal analysis unit to a relay station or a base station serving the station detection device when the station identifier is extracted successfully. 33. The site detection device according to claim 32, wherein the signal analysis unit specifically includes a data frame extraction unit and an identification extraction unit: The data frame extraction unit is used to extract the terminal subframe or the relay subframe from the received signal; The identifier extracting unit is used to correspondingly extract the station identifier from the terminal subframe or the relay subframe. 34. A site detection device, characterized in that it includes a scanning unit, a synchronization unit, a receiving unit, a signal analysis unit and a storage unit: The scanning unit is used for downlink channel scanning; The synchronization unit is used to synchronize with the site scanned by the scanning unit; The receiving unit is used to receive the signal transmitted by the transmitting site synchronized by the synchronizing unit; The signal analyzing unit is used to analyze the signal received by the receiving unit; The storage unit is configured to store the site identifier of the transmitting site in the neighbor site list and/or the interference site list according to the analysis result of the received signal by the signal analysis unit. 35. The site detection device according to claim 34, wherein the signal analyzing unit comprises an identification extracting unit, configured to extract the identification of the transmitting site from the signal received by the receiving unit. 36. The station detection device according to claim 34, wherein the signal analyzing unit comprises a link quality evaluating unit, configured to evaluate the corresponding relay link quality according to the signal received by the receiving unit. 37. The site detection device according to claim 36, wherein the signal analysis unit further comprises a resource location extraction unit, a resource location reporting unit, and an identification acquisition unit; The resource position extracting unit is used to extract the resource position occupied by the signal from the signal received by the receiving unit; The resource position reporting unit is used to report the signal occupancy resource position information extracted by the resource position extraction unit to the superior base station or relay station of the detection device of the site; The identification obtaining unit is configured to receive the transmission site identification corresponding to the resource location information returned by the superior base station or the relay station. 38. The device for detecting a site according to claim 36, wherein the receiving unit is further configured to receive an interception suggestion provided by a base station to which the device belongs, including an interception site identifier and an interception resource location; the The signal received by the receiving unit is the signal received at the interception resource location; the identifier of the transmitting site is the above-mentioned interception station identifier.

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