WO2008031360A1

WO2008031360A1 - The method, system and device for transmitting in the wireless relay system

Info

Publication number: WO2008031360A1
Application number: PCT/CN2007/070659
Authority: WO
Inventors: Zheng Shang; Aimin Zhang; Yuanyuan Wang; Jiang Li
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2006-09-07
Filing date: 2007-09-07
Publication date: 2008-03-20
Also published as: CN101141172A; CN101141172B

Abstract

The method for transmitting information in the wireless relay system includes the step that the information sent between the source node to the target node is relayed by several RSs. The RSs can send information in the same time-frequency field or different time-frequency field. The target node decodes the information from the RSs simultaneously when the information is in the same time-frequency field. Then the target decodes the information respectively from the different time-frequency field, and connects each information decoded to obtain the result. A system for transmitting information in the wireless relay system is given at the same time. The method and system above can improve the reliability of link transmitting, balance the load among RSs, and improve the QoS of the target node.

Description

Transmission method, system and device in wireless relay system

The present invention relates to mobile communication technologies, and in particular, to a transmission method and a transmission system in a wireless relay system, and a relay station (RS, Relay Station), a base station (BS, Base Station), and a mobile terminal (MS, Mobile Station) in the transmission device. . Background of the invention

With the gradual increase in the demand for wireless communication, Broadband Wireless Access (BWA) technology is gradually becoming one of the hot spots in the development of communication technology. However, in the wireless communication system, due to the path attenuation of electromagnetic waves and the occlusion of buildings, some places become areas where the wireless communication signal strength is low, and the communication quality of mobile terminals located in these areas will become worse. As the demand for broadband wireless communication grows, the demand for wireless bandwidth becomes larger and larger, so higher and higher carrier frequencies are used in new protocols and systems, but the attenuation of radio waves varies with frequency. Increased by the increase. Therefore, the high carrier frequency is bound to face the problem of high attenuation, which further limits the coverage of the base station (BS, Base Station). In order to solve the problem of BS coverage, it is usually necessary to use a relay station (RS, Relay Station) to enhance the wireless communication signal between the BS and the mobile station or mobile terminal (MS, Mobile Station). There is no need for wired transmission between RS and BS, and communication only through wireless links, so it has the advantages of low cost of deployment and deployment of the single.

The working principle of the RS is that the link between the BS and the RS is regarded as a virtual connection, and the connection is directional, that is, the connection of the uplink and the connection of the downlink are different. Each connection can be distinguished by a connection identifier (CID), which has different CIDs, and the CID is uniformly assigned by the BS. Each RS maintains its own managed CID binding table, and forwards the data corresponding to the connection under its jurisdiction according to the maintained CID binding table. BS and MS During the connection establishment process, the BS will inform the RS and the MS of the corresponding CID. The BS broadcasts the correspondence between the CID and the time-frequency resource to all the terminals in its coverage in the frame header of the data frame. After the terminal learns the correspondence between the CID and the time-frequency resource from the frame header, the BS can downlink from the BS. The service frame extracts its own data and sends its own data in the uplink service frame. For the BS, the RS is equivalent to one terminal, and for the terminal, the RS is equivalent to one base station. There is one BS and multiple RSs in one area. The BS and each RS can orthogonally multiplex the same time-frequency resource within the allowed interference range, or can non-orthogonally multiplex the same time-frequency resource. Before starting the relay function, the RS will apply to the BS to initiate the relay function. After obtaining the approval of the BS, the RS will return a response to the BS and start the relay function. The process of forwarding data by using the RS is: the BS or the MS encodes and modulates the data to be transmitted and sends it out; the RS that starts the relay function demodulates and decodes the received data, re-encodes the modulation, and then forwards the data. The MS or the BS receives the data forwarded by the RS, estimates the channel coefficient, and performs demodulation and decoding to obtain the transmitted data.

However, in a wireless communication system including a relay forwarding station, such as a Worldwide Interoperability for Microwave Access (WiMAX) system in which RS is introduced, in addition to switching between different BSs, there are RS and BS. , and the switching problem between RS and RS. Since in the wireless communication system including the relay forwarding station, the MS generally selects only one RS that is most suitable for serving the current MS, the BS will re-designate an RS for the MS when performing the relay handover. When the MS is at the intersection of multiple RSs, and may not find a suitable RS for its service, or other conditions that cause the link quality between the current serving RS and the MS to deteriorate, the quality of service for the current MS will be caused. Reduce, or even break the line and other defects.

In addition, if there are several levels of relay RS forwarding between the BS and the MS, the transmission between the two nodes may involve a variety of situations, that is, the transmission of the source node→the target node may have BS→RS, RS→RS, RS→MS, BS→MS or MS→RS, RS→RS, RS→BS, In a variety of situations, such as MS→BS, if only one relay RS is selected for forwarding between two nodes, the same problem as above will occur, which may result in degradation of the quality of service of the MS, and even defects such as disconnection.

In addition, when an MS has multiple traffic flows with a large amount of data, the service of a single RS greatly increases the load of the RS and increases the processing load. In severe cases, it affects the quality of service of the RS to other users. , even affecting overall system performance. Summary of the invention

In view of this, an embodiment of the present invention provides a transmission method in a wireless relay system, which can effectively improve the quality of services for the MS and prevent disconnection and the like.

Another embodiment of the present invention further provides a transmission method in a wireless relay system, which can effectively adjust the load balance of the RS to avoid overloading a single RS.

The embodiment of the invention further provides a wireless relay transmission system, RS, BS and MS, which can effectively improve the quality of the service for the MS and avoid excessive overload of the single RS.

In the transmission method in the wireless relay system provided by the embodiment of the present invention, data between the source node and the target node is jointly forwarded by multiple relay nodes RS, and the method includes the following steps:

A. The source node encodes and modulates the information of the service flow to be sent to generate a transmission signal, and sends the signal;

B. The RS participating in the relay forwarding demodulates and decodes the signal sent by the received source node, and then re-encodes and modulates the signal, and then the obtained signal is jointly directed to the target node according to the indication information of the control node on the same time-frequency resource. Forward out

C. The target node receives a signal that is simultaneously forwarded from multiple RSs, and the signal is a superposition of a plurality of RS forwarding signals, estimates a channel coefficient, and demodulates and decodes the received signal to obtain the transmitted information. In another transmission method of the wireless relay system according to the embodiment of the present invention, the data between the source node and the target node is jointly forwarded by the plurality of relay nodes RS, and the method includes the following steps:

A. The source node sends the information to be sent after being coded and modulated;

B. The RS participating in the relay forwarding demodulates and decodes the signal sent by the received source node, and then intercepts the specific bit stream according to the instruction information of the control node to perform re-encoding modulation, and then jointly to the target node on different time-frequency resources. Forward out

C. The target node receives different data signals that are jointly forwarded from multiple RSs, demodulates and decodes the received signals according to the indication information of the control node, and then splices the demodulated and decoded data to obtain the transmitted information.

A wireless relay transmission system provided by an embodiment of the present invention includes:

The source node is configured to: after the code to be transmitted is coded and modulated, generate a transmission signal, and send the signal; and the control node is configured to send the command information to the RS and the target node;

The plurality of RSs participating in the forwarding are used for demodulating and decoding the signal sent by the source node, and then re-encoding and modulating, and then forwarding the coded modulated signal to the target node according to the indication information of the control node;

The target node is configured to receive signals sent by multiple RSs participating in the forwarding, and perform demodulation and decoding on the received signals according to the indication information of the control node to obtain the transmitted information.

The RS provided by the embodiment of the present invention includes: a transmitter, a receiver, a duplexer and an antenna, an uplink data processing module, a downlink data processing module, and a control module, where

The downlink data processing module is configured to process downlink data received by the receiver, demodulate and decode the received data, extract a control command of the control node from the control node, send the control command to the control module, and then Under the control of the control module, the demodulated and decoded data is coded and modulated according to the instruction information of the control command, and then transmitted at a specified time-frequency resource position, or the demodulated and decoded data is intercepted and coded and modulated at a specified time frequency. Resource location Sending, or splicing the demodulated and decoded data;

The uplink data processing module is configured to process uplink data received by the receiver, and after demodulating and decoding the received data, according to a control command of the control node extracted from the downlink data processing module, in the control module Under control, the demodulated and decoded data is coded and modulated according to the instruction information of the control command, and then transmitted by the transmitter at a specified time-frequency resource location, or the demodulated and decoded data is intercepted and coded and modulated by the transmitter. Specifying the time-frequency resource location to transmit, or splicing the demodulated and decoded data; measuring the quality of the received uplink signal, generating quality information, and generating the reported information of the quality information to be reported and transmitting the information through the transmitter;

The control module is configured to complete control of the transmitter, the receiver, the uplink data processing module, and the downlink data processing module. For the RS with control capability, the control module is further configured to generate a control message that includes indication information for controlling the node at the lower level.

The BS provided by the embodiment of the present invention includes: a transmitter, a receiver, a duplexer and an antenna, an uplink data processing module, a downlink data processing module, and a control module, where

The uplink data processing module is configured to receive, by the receiver, data sent by the MS to the BS, and perform demodulation, decoding, demodulation, decoding, and splicing on the received data under the control of the control module, to obtain the transmitted data. At the same time, the feedback information is extracted from the demodulated and decoded data and sent to the control module;

The control module is configured to complete control of the transmitter, the receiver, the uplink data processing module, and the downlink data processing module, and generate a control message including the indication information according to the feedback information received from the uplink data processing module, and send the control message to the Downstream data processing module;

The downlink data processing module is configured to perform code modulation on the data to be sent under the control of the control module, and the coded modulated data and the control message sent by the control module are allocated to the data to be sent. The frequency resource is transmitted through the transmitter at the location. The MS provided by the embodiment of the present invention includes: a transmitter, a receiver, a duplexer and an antenna, an uplink data processing module, a downlink data processing module, and a control module, where

The downlink data processing module is configured to receive, by the receiver, data sent by the BS to the MS, and perform demodulation, decoding, demodulation, decoding, and splicing on the received data under the control of the control module, to obtain the transmitted data. At the same time, the control command is extracted from the demodulated and decoded data, sent to the control module, and the quality of the received downlink signal is measured according to the output of the receiver and the output of the downlink demodulation and decoding unit, and the measurement is obtained. The quality information is sent to the control module;

The control module is configured to complete control of the transmitter, the receiver, the uplink data processing module, and the downlink data processing module, and control the downlink data processing module to solve the data according to the control command sent by the received downlink data processing module. Tuning decoding, or demodulating and decoding, splicing; receiving quality information sent by the downlink data processing module, and controlling the uplink data processing module to generate reporting information;

The uplink data processing module is configured to, under the control of the control module, code-modulate the data to be transmitted, and encode the modulated data and the generated report information in a time-frequency resource allocated to the to-be-sent data. The location is sent out through the transmitter.

The method, system and device provided by the present invention can jointly forward the data between the source node and the target node by multiple relay nodes RS, and the RSs can forward the same data on the same time-frequency resource, or at different times. Different data is forwarded on the frequency resource, and the target node performs demodulation and decoding on the superposed signal of the same data forwarded by the received RS on the same time-frequency resource; the target node transmits different data of the received RS on different time-frequency resources. Demodulation and decoding respectively, and splicing the demodulated and decoded data as needed, and finally obtaining the transmitted data, thereby improving the reliability of link transmission, and realizing load balancing between multiple RSs, improving terminal service The quality that achieves the performance that is not possible with a single service RS, and provides a higher rate, lower bit error rate transmission for the target node. BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram showing the relationship between transmission methods in a wireless relay system according to the present invention.

2 is a flow chart showing an embodiment of a transmission method in a first wireless relay system according to the present invention.

FIG. 3 is a flowchart of an embodiment of a method for transmitting a signal by a source node and a signal received by a target node when a direct connection of a source node to a target node is included in the transmission method in the first wireless relay system of the present invention.

4 is a flow chart of an embodiment of a method in which a source node sends a signal and a target node receives two signals when the transmission method in the first wireless relay system of the present invention includes a direct connection from a source node to a target node.

Figure 5 is a flow chart showing an embodiment of a transmission method in a second wireless relay system of the present invention.

FIG. 6 is a schematic structural diagram of an RS in an embodiment of a wireless relay transmission system according to the present invention. FIG. 7 is a schematic diagram showing the internal structure of an RS in an embodiment of a wireless relay transmission system according to the present invention. FIG. 8 is a schematic diagram showing the internal structure of a BS in an embodiment of a wireless relay transmission system according to the present invention. FIG. 9 is a schematic diagram showing the internal structure of an MS in an embodiment of a wireless relay transmission system according to the present invention. Mode for carrying out the invention

In order to better understand the technical solutions of the present invention, the technical solutions of the present invention will be further described below in conjunction with the embodiments and the accompanying drawings.

The basic idea of the present invention is: The data between the source node and the target node is jointly forwarded by multiple RSs, and the RSs can forward the same data on the same time-frequency resource, or can forward different data on different time-frequency resources, the target node. Demodulating and decoding the superposed signal of the same data forwarded by the received RS on the same time-frequency resource; the target node demodulates and decodes different data forwarded by the received RS on different time-frequency resources, and according to the need Solution The decoded data is spliced, and finally the transmitted data is obtained, thereby improving the reliability of link transmission and realizing load balancing between multiple RSs. Since the data transmission in this method is from single point to multipoint to single point mode, this transmission mode is called PMPP transmission mode. The plurality of RSs refers to more than one RS. To describe the cleaning, a plurality of RSs referred to below refer to more than one RS.

Referring to FIG. 1, FIG. 1 is a schematic diagram showing the relationship between PMPP transmission modes in the present invention. As shown in the figure, there are k RSs participating in relay forwarding between the source node and the target node. If the source node can also directly contact the target node, there may also be a direct connection between the source node and the target node, as shown in the figure. The dotted line is shown. The figure shows the channel coefficients of RSi to the target node, where . The channel coefficient between the source node and the target node. In the downlink transmission process, that is, the data starts in the BS and is suspended in the MS, the PMPP mode can be subdivided into four cases, that is, the source node→the target node can represent BS→RS, RS→RS, RS→MS, BS→MS. In the uplink transmission process, that is, the data starts at the MS and is suspended in the BS, the PMPP mode can also be subdivided into four cases, that is, the source node→the target node can represent MS→RS, RS→RS, RS→BS, MS→BS.

With reference to Figure 1, the present invention provides two methods. In the first method, the relay RS forwards the same data on the same time-frequency resource. In the second method, the relay RS forwards different data on different time-frequency resources. The details are described below separately.

The first method is described first.

The following describes the case where there is a service flow between the source node and the target node in the first method in combination with the three embodiments.

Embodiment 1:

Referring to FIG. 2, FIG. 2 is a flowchart of a first embodiment of a transmission method in a first wireless relay system according to the present invention. In this embodiment, the BS or the RS having the control function maintains an active set of RSs, that is, a set of relay RSs capable of receiving signals of the source node and capable of serving the target node. The criterion for entering or exiting the active set is all relay RSs. Monitoring the quality of the uplink signal of the source node or the target node, determining whether the quality information of the received uplink signal meets the reporting requirement, or whether the predetermined threshold is reached, and if so, to

The BS or the RS report with control capability requires entry or exit of the RS active set. For the sake of clearer description, the present embodiment does not include the case where the source node directly transmits a signal to the target node. As shown in Figure 2, the process includes the following steps:

Step 201: The source node encodes and modulates the information to be transmitted to generate a transmission signal ^发送 «send.

In this step, the source node may be a base station BS, or an RS with control capability, or an RS without control capability, or an MS or the like.

The sending signal carries related information of the signal, such as a connection identifier CID. Step 202: The RS activates the RS that participates in the relay forwarding to demodulate and decode the signal sent by the correctly received source node, and then re-encodes and generates X _ss , and then forms a forwarding signal ^, i ≥ 0, and then The indication information of the control node is forwarded to the target node in common at the same time-frequency resource.

In this step, the indication information of the control node refers to: directly transmitting, by the BS or the RS with control capability, a control message containing the indication information or a control message containing the indication information by the BS forwarded by the other RS or the control-capable RS Level-relay RS, the indication information contains time-frequency resource information used by the current service flow.

The RS participating in the relay forwarding determines whether the signal needs to be forwarded according to the CID information carried in the received signal, and if it needs to be forwarded, the signal is based on the time-frequency resource location information in the indication information of the control node. Forwarding at the time-frequency resource location, because the CIDs carried by the same signal are the same, and the time-frequency resource information allocated to the signal is the same, so that all the RSs participating in the relay forwarding can receive the same signal in the phase. Forward on the same frequency resource. All RSs in the RS active set receive signals sent by the source node, and demodulate and decode the received signals to determine whether they need to participate in forwarding. The judgment condition is: First, the signal from the source node is correctly received, and then It is judged whether the channel quality between itself and the target node satisfies a preset threshold value or is it designated by the control node as a relay forwarding station. If the forwarding condition is satisfied after the judgment, the relay RS re-encodes the data after demodulation and decoding, and the code modulation mode may adopt the same coding modulation mode as the source node, or may be different from the source node. Code modulation method. If the channel information between itself and the target node is known at this time, that is, the channel coefficient ^, > 0 of the RSi to the target node is known, the signal to be transmitted is multiplied by the conjugate of the channel coefficient, and then transmitted, that is, At this time, the forwarding data = X _s x , which is called the pre-equalization technique; if the channel information is unknown, the coded and modulated data is directly sent out, that is, the forwarding data at this time = X _S ; After the forwarding condition is not satisfied, the relay RS discards the demodulated and decoded data, and ends the process.

The method for the control node to designate the RS as the relay forwarding station refers to: directly transmitting the control message by the BS or the RS with control capability or the control message of the BS or the controllable RS forwarded by the other RS to the relay RS of the current level. , notify the RS as a relay forwarding station. The method may be: The control node notifies the RS of the CID of the signal to be forwarded, and the RS forwards the service flow of the CID. If it is a WiMAX system, the relay RS adds the CID to the CID list maintained by itself, and when the control node notifies the RS to stop relaying the service flow of a CID, the RS selects the CID of the service flow from the RSID. The list of maintained CIDs is removed.

Step 203: The target node receives the signal Y _RS that is forwarded by multiple RSs in step 202 at the same time, and does not consider the noise item. If no pre-equalization technique is used, then

If the pre-equalization technique is used, then = ^ = ^ ′ ² ^ ₅ , then the composite channel coefficients are estimated and demodulated and decoded to obtain the transmitted information. In this step, the target node may be an RS with control capability, or an RS without control capability, or an MS, or a BS.

In this embodiment, it can be found that by using the pre-equalization technology, the diversity gain of multiple forwarding RSs can be obtained, and the reliability of the transmission is higher. Of course, if the channel information between the RS participating in the forwarding and the target node is not known, the pre-equalization technique may not be used.

The following describes in detail the case where the transmission method in the first wireless relay system includes direct transmission of data from the source node to the destination node. There are four transmission strategies when there is a direct connection from the source node to the destination node. Strategy 1: The source node sends the signal twice, and the target node receives only one signal, that is, the source node sends the signal once, and the RS receives the signal. The target node does not receive the current signal, and the RS forwards the signal to the target node. The source node sends a signal to the target node again, that is, the second signal sent by the source node, but only the signal is sent to the target node at this time, and the target node simultaneously receives the signal forwarded by the RS and the signal directly sent by the BS to itself; Strategy 2: The source node only sends the signal once, and the target node receives the signal twice, that is, the source node only sends the signal once, and the RS receives the signal with the target node, that is, the target node receives the first signal, and the RS sends the target signal to the target node. While the signal is being forwarded, the source node no longer sends a signal to the target node. At this time, the target node receives the second signal, that is, the signal forwarded by the RS. Strategy 3: The source node sends the signal twice, and the target node receives the signal twice, that is, The target node also receives the first signal based on the situation in policy 1; policy 4: source node Sending a signal, the target node only receives the signal once, that is, the target node does not receive the signal sent by the source node in the case of the policy 2, in this case, the target node does not process any signal sent by the source node, and processes The process is the same as that in the first embodiment. Therefore, the situation in the policy 4 is not introduced below, and only the first three cases are introduced.

Embodiment 2:

Referring to FIG. 3, FIG. 3 is a flowchart of an embodiment of a PMPP transmission method in which the source node sends two signals and the target node receives a signal. Suppose the signal sent by the source node is ^X N is re-coded by RS to generate a signal to be transmitted ^^, wherein the coded modulation mode may adopt a coded modulation mode different from that of the source node, or may adopt the same coded modulation mode as the source node, and the RSi is known to the target node. The channel coefficients are those in which they have the same dimensions as ^X «s:

Step 301: The source node encodes and modulates the to-be-transmitted signal to generate a transmission signal, and then sends the signal.

In step 302, the RS in the RS active set receives the signal from the source node and demodulates the decoding.

Step 303, the RS determines whether it needs to forward the signal, and the condition of the RSi forwarding signal is: (RSi correctly receives the signal from the source node) and ((the channel quality between the RSi and the target node meets a predetermined value) or (the control node specifies RSi forwards)) If the RSi does not need to be forwarded, the signal is discarded, and the process is terminated. If forwarding is required, the process proceeds to step 304.

In this step, the method for the control node to specify the RSI to be forwarded refers to that the BS or the control-capable RS directly sends the control message or the control message of the BS or the control-capable RS forwarded by the other RS to the relay RS of the current level, and the notification is sent. The RS is forwarded as a relay station. The control message may include a CID that signals the signal that the RS is about to forward.

Step 304: The RS that participates in the forwarding demodulates and decodes the bit stream according to the indication information of the control node, and then re-encodes and obtains a signal to form a transmission signal ^{= χ} ^ , where when the pre-equalization technique is enabled =, when the pre-equalization technology is not enabled = ¹ .

In this step, the indication information of the control node refers to that the BS or the RS with control capability directly sends a control message containing the indication information or a control message containing the indication information of the BS or the control-capable RS forwarded by other RSs to the current level. The relay RS includes the coded modulation mode to be used by the relay RS, or the coded modulation mode adopted by the relay RS of the current level. Step 305, if there is direct data transmission from the source node to the target node, the source node needs to send the signal X on the same time-frequency resource at the same time. = X _SS . , where X _ss is the data generated by the source node using the same code modulation method as the relay RS participating in the forwarding to encode and modulate the transmitted signal, so it is the same as the RS code modulated data involved in the forwarding. , and when pre-equalization technology is enabled. = , is the channel coefficient from the source node to the destination node, when no pre-equalization technology is enabled. = 1.

Step 306: The target node receives signals simultaneously sent from the plurality of RSs and the source node, and estimates an equivalent composite channel coefficient, and demodulates and decodes the received signal. In this step, because the source node adopts the same code modulation mode as the RS participating in the forwarding, and the RS participating in the same time and time transmits the data on the same time and time, the processing method in this step is the same as the source node. When the data of the target node is directly sent, the situation is the same, and no special processing is required.

At this point, the transmission ends. If the signal transmission is incorrect, the corresponding retransmission mechanism needs to be used for retransmission.

The method of the present invention is further described below in conjunction with a specific application of the present embodiment.

Taking the source node as the base station BS and the target node as the MS as an example, the PMPP transmission method is described in detail:

It is assumed that the data transmitted by the BS is an X _BS and is re-encoded by the RS to form a data to be transmitted X _RS , wherein the coded modulation mode may adopt a coded modulation mode different from that of the BS, or may use the same code modulation mode as the BS, and is known. The channel coefficient of RSi to MS is a vector in which it has the same dimension as X _RS , there is direct data transmission from BS to MS, and pre-equalization technology is enabled:

1) The BS transmits the data X _BS by broadcast or multicast in the downlink relay subframe. 2) The RS in the RS active set receives the data X _BS correctly received by the BS in the downlink relay subframe, and demodulates and decodes, and the RS participating in the relay forwarding continues to perform step 3), and the RS not participating in the relay forwarding will pass The demodulated and decoded data is discarded, and the process ends.

3) The RS participating in the forwarding demodulates the decoded bit stream to re-encode and modulate according to the indication of the BS to obtain the data X _ss , and then form the transmission data = X _SS . The downlink terminal subframe is transmitted, wherein the time-frequency resource used is BS designation.

4) The BS transmits data X ₀ = X _RS · hi , ^h on the same time-frequency resource of the downlink terminal subframe. For the BS to MS channel coefficient, ^ ₅ is the data generated by the data X _BS in the same code modulation mode as the RS.

5) The MS receives data forwarded from the BS and multiple RSs simultaneously in the downlink terminal subframe, and estimates an equivalent composite channel coefficient, which is demodulated and decoded.

At this point, the transmission ends. If the data transmission error occurs, the corresponding retransmission mechanism needs to be used for retransmission.

Embodiment 3:

Referring to FIG. 4, FIG. 4 is a flowchart of a method 2, that is, a PMPP transmission method in which a source node transmits a signal and a target node receives two signals. Suppose the signal sent by the source node is ^,

RS re-encoding modulation, where a coding modulation scheme different from the source node may be used, or the same coding modulation scheme as the source node may be used, and then the transmission signal X _{ss is} formed, and the channel coefficient of the RSi to the target node is known to be X _ss has vectors of the same dimension:

Step 401: The source node encodes and modulates the to-be-transmitted information to form a transmission signal ^, and sends it out.

Step 402: The RS in the RS active set receives the signal sent by the source node and demodulates and decodes. If there is direct data transmission from the source node to the target node, the target node also receives the signal. Signal, set the received signal to.

Step 403, the RS determines whether it needs to forward, and the condition of the RSi forwarding signal is: (RSi correctly receives the signal from the source node) and ((the channel quality between the RSi and the target node meets a predetermined value) or (the control node specifies the RSi) Forward)), if the RSi does not need to be forwarded, discard the signal and end the process. If forwarding is required, go to step 404.

In this step, the control node specifies that the RSi is forwarded, and the control message is directly sent by the BS or the RS with control capability or the control message of the BS or the control RS that is forwarded by other RSs to the relay RS of the current level, and the notification is notified. The RS is forwarded as a relay station. The control message may include a CID that signals the signal that the RS is about to forward.

Step 404: The RS that participates in the forwarding demodulates and decodes the bit stream according to the indication information of the control node to obtain a signal X _RS according to the indication information of the control node, and then forms a forwarding signal X _t = x _ss · , wherein when the pre-equalization technique is enabled, = 1 when pre-equalization is not enabled.

In this step, the indication information of the control node refers to that the BS or the RS with control capability directly sends a control message containing the indication information or a control message containing the indication information of the BS or the control-capable RS forwarded by other RSs to the current level. The relay RS includes the coded modulation mode to be used by the relay RS, or the coded modulation mode adopted by the relay RS of the current level.

Steps 405-406, the target node receives signals simultaneously sent from multiple RSs, and determines whether there is direct data transmission from the source node to the target node. If there is and ^ is equal to X _m , that is, the RS and the source node adopt the same code modulation mode. Step 407 is performed; if the X _{ss is} not equal to, that is, the RS uses a different coding modulation mode from the source node, step 408 is performed; if there is no direct data transmission from the source node to the target node, the target node estimates an equivalent synthesis. The channel is demodulated and decoded for !^ and then ends.

Step 407, the target node constructs a composite signal y = _s +i ), when pre-equalization is enabled The channel coefficient from the source node to the target node during operation is a ₀ = l when the pre-equalization technique is not enabled, and then the equivalent synthetic channel is estimated, and the F is demodulated and decoded, and ends.

Step 408: The target node estimates an equivalent composite channel, performs demodulation and decoding, and checks a parity bit (CRC) to determine whether it is correct. If it is correct, it ends. If it is incorrect, step 409 is performed.

In step 409, the target node performs demodulation and decoding, and ends.

The order of steps 408 and 409 can be reversed. That is, the target node can demodulate and decode the CRC first, and check whether the CRC is correct. If it is correct, it ends. If it is incorrect, the equivalent synthetic channel is estimated, and the demodulation and decoding are performed.

Taking the source node as the MS and the target node as the BS as an example, the PMPP transmission method is described in detail:

It is assumed that the data sent by the MS is X _MS and is re-encoded by RS. The code modulation mode may adopt a different coding modulation mode than the MS, or may use the same code modulation mode as the MS, and then form the data to be transmitted X _ss , RSi to The channel coefficient of the BS is a vector in which ^ and ^ ₅ have the same dimension, there is direct data transmission from the MS to the BS, and the pre-equalization technique is enabled:

1) MS X _MS transmits a data frame in the uplink sub-terminal, wherein the frequency resources used by the specified BS.

2) The RS in the RS active set receives the data X _MS from the MS in the uplink terminal subframe, and demodulates and decodes, and the BS also receives the data in the uplink terminal subframe, and sets the data received by the BS as 3) The RS participating in the forwarding demodulates the decoded bit stream to re-encode and modulate according to the indication of the BS to obtain the data X _ss , and then form the forwarding data = X _SS . In the uplink relay subframe, the time-frequency resource used is used by The BS specifies that the RS that does not participate in the relay forwarding discards the demodulated and decoded data, and ends the process.

4) The composite signal that the BS receives multiple RSs simultaneously forwarded in the uplink relay subframe is processed separately according to the following conditions:

Case 1: RS and MS use the same code modulation method, ie X _ss is equal to X _MS :

4.1) The BS constructs a composite signal F = F _SS + Y _{MS -} K) , where is the channel coefficient of the MS to the BS.

4.2) The BS estimates the equivalent composite channel and demodulates and decodes F.

Case 2: RS and MS use different coding modulation methods, ie X _{ss is} not equal to X _MS :

4.1) The BS estimates the equivalent composite channel, performs demodulation and decoding, and checks the CRC to determine whether it is correct. If it is correct, it ends. If it is incorrect, it enters 4.2).

4.2) The BS demodulates and decodes the _MS .

The order of 4.1) and 4.2) can be reversed. That is, the BS can demodulate and decode the _MS first, and check the CRC to determine whether it is correct. If it is correct, it ends. If it is not correct, the equivalent composite channel is estimated, and the demodulation and decoding are performed.

For the policy 3, that is, the source node sends the signal twice, and the target node receives the PMPP transmission method of the two signals, then in step 404 and step 405 in the third embodiment, the step 305 in the second embodiment is further included, that is, if the source exists For direct data transmission from the node to the target node, the source node needs to send the signal X ₀ = X _RS -al on the same time-frequency resource at the same time. X _ss in the equation is the data generated by the source node after coding and modulating the transmitted signal by using the same coding modulation method as the relay RS participating in the forwarding, so it is the same as the RS code modulated data participating in the forwarding, and when the pre-enablement is enabled When balancing technology. = , is the channel coefficient from the source node to the target node, when the pre-equalization technique is not enabled ". = 1 and the signal ¹ ^ in step 305 contains the signal sent by the source node received at the same time. The other processing flow is the same as the third embodiment.

In the case that the target node is a traditional MS, the MS does not receive the data directly sent by the source node, and the processing method applies the policy 4, that is, the same as the case where there is no direct transmission from the source node to the target node, and the method flow is the same as that in the first embodiment.

In addition, in the first PMPP transmission method, there is another case where there are multiple different service flows between the source node and the target node. In this case, each service flow can be treated as an independent process and processed separately. That is, there are separate superpositions of multiple different service flows. Two embodiments are given below for further description of this case.

Embodiment 4:

Take the case where the source node is the BS and the target node is the MS:

Suppose an MS has two downstream traffic flows at the same time, such as video and voice. Two different traffic flows correspond to two different connection identification CIDs, and the BS is connected to the MS through two different RSs. For service flow 1, the connection identifier is CID1, the signal sent by the BS is X _BS1 , the connection identifier of the service flow 2 is CID2, and the signal sent by the BS is X _BS1 . The BS tells each RS through the control message that the CID of the service flow needs to be forwarded, so that each RS knows which CID data it needs to forward. In this embodiment, RS1 is responsible for forwarding data of CID1, and RS2 is responsible for forwarding data of CID2. Of course, multiple RSs may forward data of CID1, and multiple RSs may forward data of CID2.

4. Let the ith RS re-encoded signal to be forwarded as X _s , the channel coefficient of RSi to MS is / 1, and the vector with the same dimension as ^ ₅ , and pre-equalization is enabled. Technology:

1) The BS simultaneously transmits the signal X _BS p X _BS2 in the downlink relay subframe.

2) RS1/RS2 receives the signal X _BS1 /X _BS2 transmitted by the BS in the downlink relay subframe, and demodulates and decodes.

3) RSi judges whether it needs to forward the signal according to the CID table it manages. The frame header of the received data contains CID information. If the RSI does not need to be forwarded, the signal is discarded, and the process ends. If forwarding is required, enter 4).

4) RS1/RS2 re-encodes the demodulated and decoded bit stream according to the indication of the BS to obtain the signal X _SSi /X _SS2 , and then forms the transmission signal ^ = X _{S to} be transmitted in the downlink terminal subframe, wherein the time frequency used is used. Resources are specified by the BS.

5) The MS according to the indication of the downlink channel mapping message DL-MAP information, the information may be generated by the BS, forwarded by RS1 or RS2, and received by the RS1 and RS2 in the downlink terminal subframe, and the received signal is performed according to the estimated channel coefficient. Demodulation decoding.

Embodiment 5:

Take the case where the source node is the MS and the destination node is the BS:

Suppose an MS has two upstream traffic streams at the same time, such as video and voice. Two different traffic flows correspond to two different CIDs, and the BS is connected to the MS through two different RSs. For service flow 1, the connection identifier is CID1, the signal sent by the MS is X _MS1 , and for service flow 2, the connection identifier is CID2, and the signal sent by the MS is X _MS2 . The BS tells each RS through the control message that the CID of the service flow needs to be forwarded, so that each RS knows which CID data it needs to forward. In this embodiment, RS1 is responsible for forwarding data of CID1, and RS2 is responsible for forwarding data of CID2. Of course, multiple RSs can forward data of CID1, and multiple RSs forward CID2. The data.

4: Let the i-th RS re-encoded signal to be forwarded is X _RSi , and the channel coefficient of RSi to BS is ^, where ^ and X have vectors of the same dimension, and pre-equalization technology is enabled:

1) The MS simultaneously transmits signals X _MS1 and X _MS2 in the uplink terminal subframe, wherein the time-frequency resources used are specified by the BS.

2) RS1/RS2 receives the signal X _MS1 /X _MS2 from the MS in the uplink terminal subframe and demodulates and decodes.

4) RSi re-encodes the demodulated and decoded bit stream according to the indication of the BS, and obtains a signal to form a transmission signal. ^ = X _{S is} transmitted in an uplink relay subframe, wherein the used time-frequency resource is specified by the BS.

5) The BS receives the signals forwarded from RS1 and RS2 in the uplink relay subframe, and demodulates and decodes the received signal according to the estimated channel coefficients.

In the following, the second method of transmitting the data in the present invention, that is, the case where the data between the source node and the target node is forwarded by different relay RSs at different time-frequency resources is described in detail. If there is a direct connection from the source node to the target node, while the RS transmits the signal to the target node, the source node may send other different signals to the target node on different time-frequency resources, or may not send signals to the target node.

Referring to FIG. 5, FIG. 5 is a second method for transmitting ΡΜΡΡ in the present invention, that is, a ΡΜΡΡ transmission party that forwards different data between different source and time resources by multiple relay RSs between a source node and a target node. A flow chart of an embodiment of the method.

Assuming that the signal sent by the source node is Χ _Ν1 , after RS re-encoding and modulating, each RS forms a different signal to be forwarded X _ss, wherein the signal to be forwarded is different, which may be caused by different coding modulation modes, or may be source signal bits. Due to the difference in flow, since the signals to be forwarded are different, each RS needs to use different time-frequency resources to forward these signals. Let RSi be the target node's channel coefficient h, where h _t and X _{RS i} have the same dimension vector.

Step 501: The source node sends a signal X _W1 .

In this step, the source node may be an MS, or may be an RS, or may be a BS. If the source node is an MS, the direct control node of the MS, that is, the node may be an RS with control capability, or may be a BS. , to determine and send a control message containing the indication information to the RS, indicate which RSs to forward, and which segment of data to forward, such as: First, the connection identifier CID of the data stream to be forwarded is notified to the RS that needs to be forwarded, and then each is notified. Time-frequency resource information of each segment of the RS data stream, and segmentation features for data interception, the segmentation feature may be a start bit and an end bit of the data bit stream, or may be a start bit of the data bit stream The length of the bit stream to be intercepted is then instructed by the RS to number the truncated data bit stream. Simultaneously sending the corresponding signaling with the indication information to the target node, informing the time-frequency resource information of each segment of the data stream, and the segmentation feature for data splicing, wherein the segmentation feature for splicing may be the data bit stream of each segment The connection ID and segment number used. If the source node is a BS, the BS determines a concurrency control command to indicate which RSs perform forwarding, and which data is forwarded, and forwards the corresponding signaling to the target node through one or more RSs, and informs the time-frequency resource information of each segment of the data stream. And a segmentation feature for data splicing; if the source node is a control capable RS, the RS makes relevant decisions; otherwise, if the source node does not have control capability, the decision is made by the superior RS or BS with control capability .

Step 502: The RS in the RS active set receives the signal Χ _来自 from the source node, and demodulates the solution. code.

Step 503, the RS determines whether it needs to forward the signal, and the condition of the RSi forwarding signal is: (RSi correctly receives the signal from the source node) and (the control node specifies the RSi to forward), if the RSi does not need to forward, the signal is discarded. End this process, if forwarding is required, proceed to step 504.

Step 504: For demodulating and decoding the bit stream, the RS participating in the forwarding intercepts the specific bit stream according to the instruction information of the control node, and performs re-encoding and modulation to obtain the signal X _{SS i} , and then forms a transmission signal=X _SS , and enables pre-equalization technology. Time = when the pre-equalization technique is not enabled ^{= 1} , while the RS sends the signal, if there is a direct connection from the source node to the target node, and the source node is not the control node, the source node can be at different time and frequency according to the indication information of the control node. The resource sends a signal to the target node, and the signal may be the same data as the RS, and is transmitted on the same time-frequency resource in the same code modulation mode as the RS; or the source node and all the RS intercepts each other. Different data, which do not overlap, do not miss, are sent on different time-frequency resources, and may not send signals to the target node; if the source node is a control node, the above-mentioned transmission mode is determined by itself.

In this step, the indication information of the control node refers to that the BS or the RS with control capability directly sends a control message containing the indication information or a control message containing the indication information of the BS or the control-capable RS forwarded by other RSs to the current level. a relay RS, where the indication information includes time-frequency resource information used by each segment of the data stream and a segmentation feature of the data interception; the RS participating in the relay forwarding intercepts the bit stream according to the segmentation feature in the indication information and marks the sequence number Then, according to the time-frequency resource information used by each segment in the indication information, the intercepted bit stream is code-modulated and transmitted on the corresponding time-frequency resource.

Step 505: The target node receives signals from multiple RSs or including the source node simultaneously transmitting on different time-frequency resources, and estimates respective equivalent channel coefficients, and then from different RSs. The signals are demodulated and decoded according to the indication information of the control node, and finally spliced into a bit stream transmitted by the source node to itself.

In this step, the indication information of the control node refers to that the BS or the RS with control capability directly sends a control message containing the indication information or a control message containing the indication information of the BS or the control-capable RS forwarded by other RSs to the current level. a relay RS, the indication information includes time-frequency resource information used by each segment of the data stream and a segmentation feature of the data; the target node separately demodulates and decodes the bit stream of the specific data forwarded by each received RS, and then according to the indication Segmentation features in the information splicing them. If the segmentation feature includes the CID and the segmentation sequence number of the data stream, the target node demodulates and decodes the data forwarded by each RS that receives the same CID, and determines the splicing between the data streams according to the segmentation sequence number of each data stream. Relationships, then stitch them together.

At this point, the transmission ends. If the signal transmission is incorrect, the corresponding retransmission mechanism needs to be used for retransmission. As can be seen from the above flow, the signal received by the target node in step 505 is transmitted in parallel by a plurality of units, so that the load can be balanced within a plurality of RSs.

In addition, the segmentation feature in the indication information sent by the control node to the RS and the target node in the embodiment may be the same, that is, the segmentation feature includes: a CID of the data stream, a segment start termination bit, and a segment sequence number. Then, the RS participating in the relay forwarding in step 504 is intercepted according to the indication information bit stream; in step 505, the target node receives the bit stream of each piece of specific data containing the same CID according to the segmentation feature in the indication information. The segment number is spliced.

The transmission system of the wireless relay in the present invention will be further described in detail below with reference to the embodiments.

The system in this embodiment is composed of a source node, a target node, multiple RSs participating in relay forwarding, and a control node. The networking structure between the source node, the target node, and multiple RSs participating in relay forwarding is shown in FIG. 1. Shown. Wherein, the source node→the target node can represent BS→RS, RS→RS, RS→MS, BS→MS, and MS→RS, RS→RS, RS→BS, MS→BS, where RS includes RS with control capability and RS with no control capability.

The control node is a BS or a controllable RS; for uplink transmission, the control node is an RS or BS that directly controls the target node, and if the target node has control capability, it is a target node; for downlink transmission, the control node To directly control the RS or BS of the source node, if the source node has control capabilities, it is the source node.

The RS in the above system may be composed of a transmitter, a receiver, a duplexer and an antenna, an uplink data processing module, a downlink data processing module, and a control module, as shown in FIG. 6.

The duplexer is connected to the antenna and is used for time-sharing transmission and reception of the antenna.

The receiver is configured to receive data sent by the source node through the antenna of the duplexer, and convert the data from the radio frequency signal to the baseband signal.

a downlink data processing module, configured to process downlink data received by the receiver, demodulate and decode the received data, extract a control command of the control node, send the control command to the control module, and then send the control command to the control module. Under control, the demodulated and decoded data is coded and modulated according to the indication information of the control command, and then transmitted at a specified time-frequency resource position, or the demodulated and decoded data is intercepted and coded and modulated at a specified time-frequency resource position. Send, or splicing the demodulated decoded data.

If the indication information of the control command includes the time-frequency resource information and the feature identifier of the data, the downlink data processing module encodes and modulates the data of the feature identifier, and is indicated by the transmitter in the indication information. The data is sent out at the location of the time-frequency resource.

If the indication information of the control command includes the segmentation feature for intercepting the current data and the time-frequency resource information and the feature identifier of the data to be used for the intercepted data, the downlink data processing module determines the data of the feature according to the indication information. The segmentation feature indicated intercepts the data, and then encodes and modulates the intercepted data, and then transmits the indication signal through the transmitter. The data is sent out at the time-frequency resource location in the message.

If the segmentation feature of the interception of the current data included in the indication information of the control command, the time-frequency resource information used by the intercepted data, the feature identifier of the data, and the time-frequency resource information to be used after the spliced data, The data processing module splices the pieces of data received at the corresponding time-frequency resource locations according to the segmentation feature, and then performs code modulation, and transmits the data to the time-frequency resource location indicated by the control node by the transmitter.

An uplink data processing module, configured to process uplink data received by the receiver, and after demodulating and decoding the received data, according to a control command of the control node extracted from the downlink data processing module, under the control of the control module, Demodulating and decoding the data according to the instruction information of the control command, and then transmitting the data through the transmitter at a specified time-frequency resource location, or intercepting and decoding the demodulated data, and then transmitting the modulated time-frequency through the transmitter. Sending at the resource location, or splicing the demodulated and decoded data; measuring the quality of the received uplink signal, generating quality information, and transmitting the quality information that needs to be reported through the transmitter.

If the indication information of the control command includes the time-frequency resource information and the feature identifier of the data, the uplink data processing module encodes and modulates the data of the feature identifier, and is indicated by the transmitter in the indication information. The data is sent out at the location of the time-frequency resource.

If the indication information of the control command includes the segmentation feature for intercepting the current data and the time-frequency resource information and the feature identifier of the data to be used for the intercepted data, the uplink data processing module determines the data of the feature according to the indication information. The segmentation feature indicated intercepts the data, and then encodes and modulates the intercepted data, and then sends the data through the transmitter at the time-frequency resource location in the indication information.

If the indication information of the control command includes the segmentation feature for intercepting the current data, the time-frequency resource information used by the intercepted data, the feature identifier of the data, and the spliced data. The time-frequency resource information to be used, the uplink data processing module splices the pieces of data received at the corresponding time-frequency resource position according to the segmentation feature, and then performs code modulation, and passes the data to the time-frequency indicated by the transmitter at the control node. Send out at the resource location.

The uplink data processing module and the downlink data processing module share the transmitter and the receiver in a time sharing manner. The transmitter is configured to receive data of the uplink data processing module and the downlink data processing module, convert the data from the baseband signal to the radio frequency signal, and send the data to the target node through the antenna of the duplexer.

The control module is configured to complete control of the transmitter, the receiver, the uplink data processing module, and the downlink data processing module, and is also used to generate a control message including the instruction information for controlling the lower node for the RS with control capability.

The internal structure of the uplink data processing module, the downlink data processing module, and the control module of the RS is as shown in FIG. 7. Referring to FIG. 7, the uplink data processing module of the RS specifically includes: an uplink demodulation and decoding unit, an uplink data buffer unit, and an uplink. a channel measurement unit, a feedback information generation unit, a feedback information extraction unit, an uplink coding modulation unit, and a multiplexer; the downlink data processing module of the RS specifically includes: a downlink demodulation decoding unit, a downlink data buffer unit, a control command extraction unit, and a downlink channel. The measurement unit, the downlink code modulation unit, and the multiplexer; the control module of the RS specifically includes: an analysis unit, a control command generation unit, and a control unit. Wherein, in addition to the connection of the existing signal lines, the control unit in the control module is respectively connected with each of the modules in the uplink data processing module and the control data line of the downlink data processing module, for the other modules in the figure. For the sake of clarity of the signal flow relationship, the control signal lines connected to the respective modules in the uplink data processing module and the downlink data processing module by the control unit are uniformly represented by two thick arrows.

The uplink demodulation and decoding unit is configured to perform demodulation, de-symbol mapping, de-interleaving, and channel decoding on the uplink baseband signal received by the receiver under the control of the control module to obtain uncoded original information data, and The raw information data obtained is output. The uplink data buffer unit is configured to buffer the original information data output by the uplink demodulation decoding unit, and output the entire data to the uplink coding modulation unit according to the control command under the control of the control module, or intercept a certain output of the data according to the control command. The uplink code modulation unit is used, or the stored pieces of data are spliced according to the control command and output to the uplink code modulation unit.

An uplink channel measuring unit, configured to measure, according to an output of the receiver and an output of the uplink demodulation and decoding unit, a quality of the received uplink signal, and send the measured quality information to the control module, and the control module is configured according to the control module The received quality information is used to determine whether the report needs to be reported. If the report needs to be reported, the control module outputs the quality information that needs to be reported to the feedback signal generating unit. If the report does not need to be reported, the control module discards the quality information that is not required to be reported.

a feedback signal generating unit, configured to generate, by the control module, quality information outputted by the uplink channel measurement unit, generate report information, and determine, by the control module, the report

The load condition of the RS generates report information.

The feedback information extracting unit is configured to extract feedback information from the data output by the uplink demodulation decoding unit, and send the extracted feedback information to the control module.

The uplink code modulation unit is configured to perform channel coding, interleaving, symbol mapping, and modulation on the original information data output by the uplink data buffer unit under the control of the control module.

The multiplexer is configured to multiplex the report information generated by the feedback information generating unit and the uplink forwarding data generated by the uplink code modulation unit, and send the signal to the transmitter.

a downlink demodulation decoding unit, configured to demodulate, de-symbol map, deinterleave and channel decode the downlink baseband signal received by the receiver under control of the control module to obtain uncoded original information data, and obtain the obtained Raw information data output.

a control command extracting unit, configured to extract, in the original information data processed by the downlink demodulation decoding unit, a control command sent by the control node, and send the control command to the control module, A corresponding control message containing the indication information is generated by the control module.

a downlink data buffer unit, configured to buffer original information data output by the downlink demodulation decoding unit, and output the entire data to the downlink code modulation unit according to the control command under the control of the control module, or intercept a certain output of the data according to the control command The downlink code modulation unit is sent, or the stored pieces of data are spliced according to the control command and output to the downlink code modulation unit.

a downlink channel measurement unit, configured to measure, according to an output of the receiver and an output of the downlink demodulation and decoding unit, a quality of the received downlink signal under the control of the control module, and send the measured quality information to the control module, where the control module is The received quality information is judged whether it needs to be reported. If the report needs to be reported, the control module sends the quality information that needs to be reported to the feedback information generating unit in the uplink data processing module, and the feedback information unit generates the report information and sends the report information to the uplink data processing module. In the multiplexer, the multiplexer multiplexes the reported information with the uplink data and sends it to the transmitter.

The downlink code modulation unit is configured to perform channel coding, interleaving, symbol mapping, and modulation on the original information data output by the downlink data buffer unit under the control of the control module.

And a multiplexer, configured to multiplex the control message generated by the control module with the downlink forwarding data generated by the downlink code modulation unit, and send the signal to the transmitter.

The analyzing unit is configured to receive a control command sent by the control command extracting unit in the downlink data processing module, parse the received command, send the parsed control command to the control unit, and receive the feedback information in the uplink data processing module. Extracting the feedback information sent by the unit, parsing the received information, and transmitting the parsed feedback information to the control unit.

a control unit, configured to complete control of the transmitter, the receiver, the uplink data processing module, and the downlink data processing module, including: receiving a control command sent by the analyzing unit, and controlling the downlink data buffer unit and the uplink data buffer unit according to the control command Data directly Output, segmentation, output, or splicing output processing; receiving quality information sent by the uplink channel measurement unit or the downlink channel measurement unit, and determining whether the report needs to be reported according to the received quality information, and if the report needs to be reported, the quality to be reported The information is output to the feedback information generating unit, and the control feedback information generating unit generates the report information, and sends the report information to the multiplexer in the uplink data processing module, and the multiplexer generates the uplink information and the uplink code modulation unit generated by the feedback information generating unit. The generated uplink forwarding data is multiplexed and transmitted together; after receiving the feedback information sent by the analyzing unit, the RS having control capability combines the measurement result sent by the uplink channel measurement unit or the downlink channel measurement unit, and generates a control command generation unit. Contains control messages that control the indication of the lower node.

a control command generating unit, for a control capable RS, the control command generating unit is configured to generate, under the control of the control unit, a control message containing the instruction information for controlling the lower node, and send it to the multiplexer, which is to be The control command generated by the control command generating unit is multiplexed with the downlink forwarding data generated by the downlink code modulation unit, and is sent out; for the RS without control capability, the control command generating unit is configured to forward the control of the superior RS or BS. The command is sent to the multiplexer, and the multiplexer will control the command generation unit. The internal structure of the BS can be as shown in FIG. 8. Referring to FIG. 8, the BS includes: a transmitter, a receiver, and a duplexer. And an antenna, an uplink data processing module, a downlink data processing module, and a control module.

An uplink data processing module, configured to receive, by the receiver, data sent by the MS to the BS, and under the control of the control module, demodulate and decode the received data, perform demodulation, decoding, and splicing, and obtain the transmitted data, and simultaneously Extracting the feedback information from the demodulated and decoded data, Send to the control module.

a control module, configured to complete control of the transmitter, the receiver, the uplink data processing module, and the downlink data processing module, and generate a control message including the indication information according to the feedback information received from the uplink data processing module, and send the control message to the downlink data processing Module.

a downlink data processing module, configured to perform code modulation on the data to be sent under the control of the control module, and pass the coded modulated data and the control message sent by the control module to the time-frequency resource location allocated to the data to be transmitted. The transmitter sends it out.

As shown in FIG. 8, the uplink data processing module of the BS specifically includes: an uplink demodulation and decoding unit, an uplink data buffer unit, an uplink channel measurement unit, and a feedback information extraction unit. The downlink data processing module of the BS specifically includes: a downlink data cache. The unit, the downlink code modulation unit, and the multiplexer; the control module of the BS specifically includes: an analysis unit, a control unit, and a control command generation unit. The control unit in the control module is connected to each of the uplink data processing module and each module in the downlink data processing module, except that it is not connected to the downlink data buffer unit.

The uplink demodulation and decoding unit is configured to perform demodulation, de-symbol mapping, de-interleaving and channel decoding on the baseband signal sent by the MS received by the receiver to the BS under the control of the control module to obtain uncoded original information data. And output the raw information obtained.

The uplink data buffer unit is configured to buffer the original information data output by the uplink demodulation decoding unit, and directly output the data under the control of the control module, or combine the data and output.

Uplink channel measurement unit for controlling the output of the receiver under the control of the control module And outputting the uplink demodulation and decoding unit to measure the quality of the received uplink signal, and transmitting the measured quality information to the control module.

a downlink data buffer unit, configured to cache original information data to be sent.

The downlink code modulation unit is configured to perform channel coding, interleaving, symbol mapping, and modulation on the original information data in the downlink data buffer unit under the control of the control module.

The multiplexer is configured to multiplex the control message generated by the control module and the downlink transmission data generated by the downlink coding unit to the transmitter under the control of the control module.

The analyzing unit is configured to receive the feedback information sent by the feedback information extracting unit in the uplink data processing module, parse the received information, and send the parsed feedback information to the control unit.

And a control command generating unit, configured to generate, under the control of the control unit, a control message including the instruction information for controlling the lower node, and send the control message to the multiplexer.

a control unit, configured to complete control of the transmitter, the receiver, the uplink data processing module, and the downlink data processing module, including: receiving feedback information sent by the analysis unit, and receiving quality information sent by the uplink channel measurement unit, according to the feedback The information and quality information control control command generating unit generates a control message containing the instruction information for controlling the lower node.

The internal structure of the MS can be as shown in FIG. 9. Referring to FIG. 9, the MS includes: a transmitter, a receiver, a duplexer and an antenna, an uplink data processing module, a downlink data processing module, and a control module.

The duplexer is connected to the antenna for time-sharing transmission and reception of the antenna.

a downlink data processing module, configured to receive, by the receiver, data sent by the BS to the MS, Under the control of the control module, the received data is demodulated and decoded, demodulated and decoded, and spliced to obtain the transmitted data, and at the same time, the control command is extracted from the demodulated and decoded data, and sent to the control module, and The quality of the received downlink signal is measured according to the output of the receiver and the output of the downlink demodulation decoding unit, and the measured quality information is sent to the control module.

a control module, configured to complete control of the transmitter, the receiver, the uplink data processing module, and the downlink data processing module, and control the downlink data processing module to demodulate and decode the data according to the control command sent by the received downlink data processing module, Or demodulating and decoding, performing splicing; receiving quality information sent by the downlink data processing module, and controlling the uplink data processing module to generate reporting information.

An uplink data processing module, configured to perform code modulation on the data to be transmitted under control of the control module, and transmit the coded modulated data and the generated report information to the time-frequency resource location allocated to the data to be transmitted through the transmitter Send it out.

As shown in FIG. 9, the downlink data processing module of the MS specifically includes: a downlink demodulation and decoding unit, a downlink data buffer unit, a control command extraction unit, and a downlink channel measurement unit. The uplink data processing module of the MS specifically includes: an uplink data cache. The unit, the feedback information generating unit, the uplink code modulation unit, and the multiplexer; the control module of the MS specifically includes: an analyzing unit and a control unit. Wherein, in addition to the connection of the existing signal lines, the control unit in the control module is respectively connected with each of the modules in the uplink data processing module and the control data line of the downlink data processing module, for the other modules in the figure. The signal flow relationship between the control unit and the uplink data processing module and the downlink data processing module are clear. The control signal lines connected to each module are represented by two thick arrows.

The downlink demodulation and decoding unit is configured to perform demodulation, de-symbol mapping, de-interleaving and channel decoding on the baseband signal sent by the BS received by the receiver to the MS under the control of the control module to obtain uncoded original information data. And output the raw information obtained.

The downlink data buffer unit is configured to buffer the original information data output by the downlink demodulation decoding unit, and directly output the data under the control of the control module, or combine the data and output.

The downlink channel measurement unit is configured to measure the quality of the received downlink signal according to the output of the receiver and the output of the downlink demodulation and decoding unit under the control of the control module, and send the measured quality information to the control module.

And a control command extracting unit, configured to extract a control command from the data obtained by the downlink demodulation decoding unit, and send the control command to the control module.

An uplink data buffer unit, configured to cache original information data to be sent.

The uplink coding and modulation unit is configured to perform channel coding, interleaving, symbol mapping, and modulation on the original information data in the uplink data buffer unit under the control of the control module.

The feedback information generating unit is configured to generate, by the control module, the report information that is sent by the control module and needs to be reported.

The multiplexer is configured to multiplex the report information generated by the feedback information generating unit and the uplink transmit data generated by the uplink code modulation unit to the transmitter.

The analyzing unit is configured to receive a control command sent by the control command extracting unit in the downlink data processing module, parse the received command, and send the parsed control command to the control unit.

The control unit is configured to complete control of the transmitter, the receiver, the uplink data processing module, and the downlink data processing module, and includes: receiving a control command sent by the analysis unit, and controlling the downlink data buffer unit to directly output the data according to the control command , or after splicing Receiving the quality information sent by the downlink channel measurement unit, and determining whether the report needs to be reported according to the received quality information. If the report needs to be reported, the quality information to be reported is sent to the feedback information generation unit in the uplink data processing module. The feedback information unit generates the above-mentioned specific embodiments, and the purpose, technical solutions and beneficial effects of the present invention are further described in detail. It should be understood that the above description is only a specific embodiment of the present invention, and The scope of the present invention is intended to be limited, and any modifications, equivalents, improvements, etc., which are within the spirit and scope of the present invention, are intended to be included within the scope of the present invention.

Claims

Claim

A transmission method in a wireless relay system, characterized in that data between a source node and a target node are jointly forwarded by a plurality of relay nodes RS, and the method comprises the following steps:

C. The target node receives a signal that is simultaneously forwarded from multiple RSs, and the signal is a superposition of a plurality of RS forwarding signals, estimates a channel coefficient, and demodulates and decodes the received signal to obtain the transmitted information.

The method according to claim 1, wherein the indication information of the control node in step B comprises: time-frequency resource information used by the sent service flow; and the RS participating in the relay forwarding according to the time-frequency resource The information forwards the data on the same time-frequency resource.

The method according to claim 1, wherein the RS participating in the relay forwarding in step B is: the control node sends a control message to be designated as a relay forwarding station, and serves the service flow of the specified feature identifier. The RSs of the RSs are forwarded according to the service flow feature identifier carried in the correctly received signal, and the signals with the same feature identifier are jointly forwarded on the same time-frequency resource;

Or the RS participating in the relay forwarding is: the RS whose channel quality between the RS and the target node meets a preset value, and each RS determines whether the correctly received the same feature is based on the channel quality information between itself and the target node. The identified signals are collectively forwarded on the same time-frequency resource.

4. The method of claim 3, wherein the control section in step B The points are: Base station BS or RS with control capability.

The method according to claim 1, wherein the sending signal carries a feature identifier of a transport service flow, and the sending signal is a single service flow signal; or the sending The signal is a plurality of service flow signals, and each service flow signal corresponds to a different feature identifier.

6. The method according to claim 3 or 5, wherein the RS maintains a list of connection identifiers CID of the service flow,

The feature identifier of the service flow includes: a connection identifier CID of the service flow;

The RS participating in the relay forwarding is: receiving a control message sent by the control node to increase the CID of a certain service flow, and adding the RS of the CID to the CID list.

7. The method according to claim 1, wherein if the RSi participating in the relay forwarding knows that its own channel coefficient to the target node is > 0, the RS pair participating in the relay forwarding described in step B is correctly received. After the signal sent by the source node is re-encoded and modulated, before being forwarded, the method further includes: performing pre-equalization processing on the signal to be sent by using the channel coefficient.

8. The method according to claim 7, wherein the pre-equalization processing in step B is: multiplying a signal to be transmitted by a conjugate of a channel coefficient ^.

The method according to claim 1, 5 or 8, wherein the RS participating in the relay forwarding in step B is: all relay RS sets capable of receiving signals of the source node and capable of serving the target node All RSs or partial RSs.

The method according to claim 9, wherein the all relay RS sets capable of receiving signals of the source node and capable of serving the target node further include: a source node itself capable of directly serving the target node;

The RS that participates in the relay forwarding further includes the source node itself, and the source node directly sends a signal to the target node; or the RS participating in the relay forwarding does not include the source node. Itself.

11. The method according to claim 10, wherein the RS participating in the relay forwarding includes a source node, and the shell J:

The step B further includes: the source node encodes and modulates the information to be sent by using the same code modulation mode as the RS that participates in the relay, and then codes and modulates the RS that participates in the relay on the same time-frequency resource. The signal is sent out. When the pre-equalization process is used, the source node multiplies the coefficient before transmitting the signal, which is a conjugate of the channel coefficient / 3⁄4 between the source node and the target node;

The superimposed signal received in step C includes: data directly transmitted by the source node.

The method according to claim 10, wherein the RS participating in the relay forwarding includes a source node, and the RS participating in the relay forwarding adopts the same coding modulation mode as the source node, then:

The step B further includes: the target node simultaneously receiving the signal sent by the source node; the step C further comprising: the target node accumulating the signal of the directly received source node and the received superimposed signal of the plurality of RSs, if pre-equalization is adopted For processing, the signal of the directly received source node is multiplied by a coefficient before the accumulation, which is a conjugate of the channel coefficient between the source node and the target node.

The method according to claim 10, wherein the RS participating in the relay forwarding includes a source node, and the RS participating in the relay forwarding adopts a different coding modulation mode from the source node, then:

The step B further includes: the target node simultaneously receiving the signal sent by the source node; in step C, the target node first demodulates and decodes the superposed signal forwarded by the received multiple RSs, and checks the check digit to determine whether it is correct, and ends correctly. Incorrectly demodulating and decoding the signal directly received from the source node; or in step C, the target node directly receives the signal directly from The signal of the source node is demodulated and decoded, and the check bit is checked to determine whether it is correct, and if it is correct, it ends, and the superimposed signal forwarded by the plurality of RSs received is demodulated and decoded.

The method according to claim 1, wherein in the step B, the RS re-encodes the received signal into: the RS re-encodes the received signal by using the same coding modulation method as the source node, Or the RS re-encodes the received signal by using a different coding modulation method than the source node; then, in step C, a demodulation decoding method corresponding thereto is adopted.

A transmission method in a wireless relay system, characterized in that data between a source node and a target node are jointly forwarded by a plurality of relay nodes RS, the method comprising the following steps: A. The source node is to be sent information. After being coded and modulated, it is sent out;

The method according to claim 15, wherein the RS participating in the relay forwarding in step B is: all of all relay RS sets capable of receiving signals of the source node and capable of serving the target node or section.

The method according to claim 15, wherein the all relay RS sets capable of receiving signals of the source node and capable of serving the target node further include: a source node itself capable of directly serving the target node; The RS that participates in the relay forwarding further includes the source node itself, and the source node directly sends a signal to the target node; or the RS participating in the relay forwarding does not include the source node itself.

18. The method of claim 17, wherein the RS participating in the relay forwarding The source node is included, and the source node is a control node, and the step B further includes: the source node intercepts the same data as the RS, and encodes and modulates the intercepted data by using the same code modulation mode as the RS. Transmitting the signal to the target node on the same time-frequency resource with the RS; or the source node intercepts data that is different from all the RSs, and then encodes and modulates the intercepted data, and then signals the signal on different time-frequency resources. The target node sends it out.

The method according to claim 17, wherein the RS participating in the relay forwarding includes a source node, and the source node is not a control node, and the step B further includes: the control node sends the indication information to the source node, the source The node intercepts the same data as the RS according to the received indication information, and uses the same coding and modulation method as the RS to encode and modulate the intercepted data, and then sends the signal to the target node on the same time-frequency resource with the RS. Sending out; or the source node intercepts data that is different from all RSs, and then encodes and modulates the intercepted data, and then sends the signal to the target node on different time-frequency resources.

The method according to claim 15, 18 or 19, wherein the indication information of the control node in step B or step C comprises: time-frequency resource information used by each segment of data stream and segmentation of data Characteristic

Then, the RS participating in the relay forwarding in the step B intercepts the bit stream according to the segmentation feature in the indication information, and intercepts the time-frequency resource information according to the time-frequency resource information used by each segment in the indication information. The bit stream is coded and modulated and sent out;

In the step C, the target node demodulates and decodes the bitstreams of the specific data forwarded by the received RSs, and then splices the demodulated and decoded data according to the segmentation features in the indication information.

The method according to claim 20, wherein the segmentation feature comprises: a CID of the data stream, a segment start termination bit, and a segment sequence number;

Then, the RS participating in the relay forwarding in the step B is according to the segmentation feature in the indication information. The segment start termination bit and the segment sequence number intercept the received data bit stream of the CID; in the step C, the target node receives the bit stream of each segment data containing the same CID according to the segment in the indication information. The segment number in the feature is spliced.

The method according to claim 15, wherein the RS participating in the relay forwarding in step B is: an RS designated as a relay forwarding station by the control node sending a control message.

The method according to claim 15 or 22, wherein the control node is: BS or RS with control capability.

The method according to claim 15, wherein if the RSi participating in the relay forwarding knows that the channel coefficient of the target node is > 0, the RS pair participating in the relay forwarding in step B is correctly received. After the signal sent by the source node is re-encoded, the method further includes: pre-equalizing the signal to be transmitted by using the channel coefficient, and then forwarding the processed data.

The method according to claim 24, wherein the pre-equalization processing in step B is: multiplying a signal to be transmitted by a conjugate of a channel coefficient.

A wireless relay transmission system, comprising: a source node, a plurality of RSs participating in relay forwarding, a target node, and a control node, where

The system according to claim 26, wherein the source node and the target node are: BS and MS, or MS and BS, or BS and RS, or RS and MS, respectively. Or MS and RS, or RS and BS, or RS and RS.

The system according to claim 27, wherein the RS is: a controllable RS or an RS without control capability.

The system according to claim 26, wherein the RS participating in the forwarding is: an RS that is designated as a relay forwarding station by the control node transmitting a control message.

The system according to claim 26 or 29, wherein the control node is: BS or RS with control capability; for uplink transmission, the control node is an RS or BS that directly controls the target node, if The target node has the control capability, and is the target node. For the downlink transmission, the control node is the RS or BS that directly controls the source node, and if the source node has the control capability, it is the source node.

31. A relay station RS, comprising: a transmitter, a receiver, a duplexer and an antenna, an uplink data processing module, a downlink data processing module, and a control module, wherein

The downlink data processing module is configured to process downlink data received by the receiver, demodulate and decode the received data, extract a control command of the control node from the control node, send the control command to the control module, and then Under the control of the control module, the demodulated and decoded data is coded and modulated according to the instruction information of the control command, and then transmitted at a specified time-frequency resource position, or the demodulated and decoded data is intercepted and coded and modulated at a specified time frequency. Sending at the resource location, or splicing the demodulated decoded data;

The uplink data processing module is configured to process uplink data received by the receiver, and after demodulating and decoding the received data, according to a control command of the control node extracted from the downlink data processing module, in the control module Under control, the demodulated and decoded data is coded and modulated according to the instruction information of the control command, and then transmitted by the transmitter at a specified time-frequency resource location, or the demodulated and decoded data is intercepted and coded and modulated by the transmitter. Sending the specified time-frequency resource location, or splicing the demodulated and decoded data; measuring the quality of the received uplink signal, generating quality information, and generating the reported quality information Information is sent out through the transmitter;

The control module is configured to complete control of the transmitter, the receiver, the uplink data processing module, and the downlink data processing module, and is also used to generate a control message including the instruction information for controlling the node at the lower level for the RS with control capability. .

The RS according to claim 31, wherein the uplink data processing module comprises:

An uplink demodulation decoding unit, configured to demodulate, de-symbolize, deinterleave, and channel decode the uplink baseband signal received by the receiver, to obtain uncoded original information data, and output the obtained original information data;

An uplink data buffer unit, configured to buffer original information data output by the uplink demodulation and decoding unit, and output the entire data to the uplink coding and modulation unit according to the control command under the control of the control module, or intercept the data according to the control command One segment of the output is output to the uplink code modulation unit, or the stored segments of data are spliced according to the control command and output to the uplink code modulation unit;

An uplink channel measuring unit, configured to measure a quality of the received uplink signal according to an output of the receiver and an output of the uplink demodulation and decoding unit, and send the measured quality information to the control module;

a feedback signal generating unit, configured to generate the report information by using the quality information output by the uplink channel measurement unit, and generate the report information by determining, by the control module, the load condition of the RS that is reported;

a feedback information extracting unit, configured to extract feedback information in the data output by the uplink demodulation and decoding unit, and send the extracted feedback information to the control module;

An uplink code modulation unit, configured to perform channel coding, interleaving, symbol mapping, and modulation on original information data output by the uplink data buffer unit;

a multiplexer, configured to report and generate uplink reporting information generated by the feedback information generating unit The uplink forwarding data generated by the unit is multiplexed and sent to the transmitter.

The RS data processing module of claim 31 or 32, wherein the downlink data processing module comprises:

a downlink demodulation decoding unit, configured to demodulate, de-symbol map, deinterleave, and channel decode the downlink baseband signal received by the receiver, to obtain uncoded original information data, and output the obtained original information data;

a control command extracting unit, configured to extract a control command sent by the control node in the data output by the downlink demodulation decoding unit, and send the control command to the control module;

a downlink data buffer unit, configured to buffer original information data output by the downlink demodulation and decoding unit, and output the entire data to the downlink code modulation unit according to the control command under the control of the control module, or intercept data according to the control command a certain segment is output to the downlink code modulation unit, or the stored segments of data are spliced according to the control command and output to the downlink code modulation unit;

a downlink channel measurement unit, configured to measure a quality of the received downlink signal according to an output of the receiver and an output of the downlink demodulation and decoding unit, and send the measured quality information to the control module;

a downlink code modulation unit, configured to perform channel coding, interleaving, symbol mapping, and modulation on original information data output by the downlink data buffer unit;

The RS of claim 33, wherein the control module comprises: an analyzing unit, configured to receive a control command sent by the control command extracting unit in the downlink data processing module, and parse the received command Sending the parsed control command to the control unit; and receiving the feedback sent by the feedback information extracting unit in the uplink data processing module Information, parsing the received information, and transmitting the parsed feedback information to the control unit;

a control unit, configured to complete control of the transmitter, the receiver, the uplink data processing module, and the downlink data processing module, including: receiving a control command sent by the analyzing unit, and controlling the downlink data buffer unit and the uplink data buffer according to the control command The unit directly outputs the data, outputs the data after segmentation, or outputs the data after splicing; receives the quality information sent by the uplink channel measurement unit or the downlink channel measurement unit, and determines whether the report needs to be reported according to the received quality information, and the quality to be reported The information is output to the feedback information generating unit. After receiving the feedback information sent by the analyzing unit, the RS having the control capability combines the measurement result sent by the uplink channel measuring unit or the downlink channel measuring unit, and the control control command generating unit generates the node containing the control lower level. Control message indicating the information;

a control command generating unit, for controlling the RS, the control command generating unit is configured to generate, under the control of the control unit, a control message including the instruction information for controlling the lower node, and send the control message to the multiplexer; The RS, the control command generating unit is configured to forward the control command sent by the upper-level controllable RS or the BS, and send it to the multiplexer.

35. A base station BS, comprising: a transmitter, a receiver, a duplexer and an antenna, an uplink data processing module, a downlink data processing module, and a control module, wherein

The downlink data processing module is configured to control data to be sent in the control module The code modulation is performed, and the coded modulated data and the control message sent by the control module are sent out through the transmitter at the time-frequency resource location allocated to the data to be transmitted.

The BS according to claim 35, wherein the uplink data processing module comprises:

And an uplink demodulation decoding unit, configured to perform demodulation, de-symbol mapping, de-interleaving, and channel decoding on the baseband signal sent by the MS received by the receiver to the BS, to obtain uncoded original information data, and obtain the original information data. Output

And an uplink data buffering unit, configured to buffer the original information data output by the uplink demodulation and decoding unit, and output the data directly under the control of the control module, or combine the data and output the data;

An uplink channel measurement unit, configured to measure a quality of the received uplink signal according to an output of the receiver and an output of the uplink demodulation and decoding unit, and send the measured quality information to the control module;

The feedback information extracting unit is configured to extract feedback information in the data output by the uplink demodulation and decoding unit, and send the extracted feedback information to the control module.

The BS according to claim 35 or claim 36, wherein the downlink data processing module comprises:

a downlink data buffer unit, configured to cache original information data to be sent;

a downlink code modulation unit, configured to perform channel coding, interleaving, symbol mapping, and modulation on original information data in the downlink data buffer unit;

And a multiplexer, configured to multiplex the control message generated by the control module with the downlink transmission data generated by the downlink coding unit, and send the data to the transmitter.

The BS of claim 37, wherein the control module comprises: an analysis unit, a control command generation unit, and a control unit, where The analyzing unit is configured to receive the feedback information sent by the feedback information extracting unit in the uplink data processing module, parse the received information, and send the parsed feedback information to the control unit;

a control command generating unit, configured to generate, under the control of the control unit, a control message including the indication information of the control lower node, and send the control message to the multiplexer;

a control unit, configured to complete control of the transmitter, the receiver, the uplink data processing module, and the downlink data processing module, including: receiving feedback information sent by the analysis unit, and receiving quality information sent by the uplink channel measurement unit, The control message including the instruction information for controlling the lower node is generated according to the feedback information and the quality information control control command generating unit.

A mobile terminal MS, comprising: a transmitter, a receiver, a duplexer and an antenna, an uplink data processing module, a downlink data processing module, and a control module, wherein the downlink data processing module is configured to pass through a receiver Receiving data sent by the BS to the MS, under the control of the control module, demodulating and decoding the received data, demodulating and decoding, and splicing, obtaining the transmitted data, and extracting the data from the demodulated and decoded data. And outputting the control command to the control module, and measuring the quality of the received downlink signal according to the output of the receiver and the output of the downlink demodulation and decoding unit, and transmitting the measured quality information to the control module;

40. The MS of claim 39, wherein the downlink data processing module comprises:

a downlink demodulation decoding unit, configured to perform demodulation, de-symbol mapping, de-interleaving, and channel decoding on a baseband signal sent by the BS received by the receiver to the MS, to obtain uncoded original information data, and obtain the original information data. Output

a downlink data buffer unit, configured to buffer original information data output by the downlink demodulation and decoding unit, and directly output the data under the control of the control module, or splicing the data and outputting the data;

And a control command extracting unit, configured to extract a control command from the data processed by the downlink demodulation decoding unit, and send the control command to the control module.

The MS of claim 39 or 40, wherein the uplink data processing module comprises:

An uplink data buffer unit, configured to cache original information data to be sent;

An uplink code modulation unit, configured to perform channel coding, interleaving, symbol mapping, and modulation on original information data in the uplink data buffer unit;

a feedback information generating unit, configured to generate information on the quality information that needs to be reported sent by the control module;

The MS of claim 41, wherein the control module comprises: an analyzing unit, configured to receive a control command sent by the control command extracting unit in the downlink data processing module, and parse the received command , send the parsed control command to control unit;

a control unit, configured to complete control of the transmitter, the receiver, the uplink data processing module, and the downlink data processing module, including: receiving a control command sent by the analysis unit, and controlling the downlink data buffer unit to perform data according to the control command Directly output, or output after splicing; receive the quality information sent by the downlink channel measurement unit, and determine whether the report needs to be reported according to the received quality information. If the report needs to be reported, the quality information to be reported is sent to the uplink data processing module. a feedback information generating unit, wherein the feedback information unit generates report information.