WO2010006463A1

WO2010006463A1 - Method and device for a mobile terminal in a wireless network to report the communication quality

Info

Publication number: WO2010006463A1
Application number: PCT/CN2008/001315
Authority: WO
Inventors: 朱孝龙
Original assignee: 上海贝尔阿尔卡特股份有限公司; 阿尔卡特朗讯
Priority date: 2008-07-15
Filing date: 2008-07-15
Publication date: 2010-01-21
Also published as: CN102067521A; CN102067521B

Abstract

A method for a mobile terminal to report the base station about the communication quality between the opposite end device of the mobile terminal and the downlink communication path of the mobile terminal, in order to solve the problem that the base station is not able to confirm exactly the mode of the downlink communication quality reported by the mobile terminal in the current wireless communication networks, includes: acquiring the report mode of the communication quality, generating the report parameters of the communication quality according to the report mode and the received downlink signal from the opposite end device, transmitting the report parameters of the communication quality and the information about the report mode to the base station. Preferably, the report parameters of the communication quality and the information about the report mode are placed in the same message which is sent to the base station. According to the present invention, base stations can acquire the correct report mode of the communication quality of the mobile terminal, make a correct disposal accordingly and sequentially, solve the problem which has not been solved for a long time, and improve the interoperability and the run capability of the wireless communication networks.

Description

Mobile terminal in wireless network

Method and apparatus for reporting communication quality

The present invention relates to a method and apparatus for reporting communication quality to a base station based on a wireless communication network, and more particularly to a mobile terminal in a wireless communication network. Background technique

The communication quality is an important performance indicator in the wireless communication network. The base station selects the manner in which the mobile terminal communicates with the base station according to the communication quality between the mobile terminal and the base station, including selecting a logical communication link and a communication path. It also includes determining the coding mode and modulation mode of the uplink and downlink signals of the base station, and the like, thereby improving the performance of communication between the mobile terminal and the base station, ensuring user QoS, and ensuring normal operation of the wireless communication network.

Communication quality includes multiple aspects, which can simply consider the condition of the wireless channel, as well as the antenna gain performance of the transmitter and receiver. Signal to Noise Power Ratio (SNR), Carrier to Interfererance plus Noise Power Ratio (CIN) and Signal to Interference Noise Ratio (Signal to Noise, Signal) Parameters such as to Interference plus Noise power Ratio, SI R ) have been widely used to measure the ratio of the strength of the wanted signal to the interfering signal among all signals received by the receiver. For example, when the SNR is large, it indicates that among all the received signals, the useful signal is stronger, and the useful signal can be easily distinguished and separated from all the received signals; when the SNR is small, the useful signal is indicated in all the received signals. It is weak and is submerged in the interference signal, making it difficult to separate it. These parameters are a good indicator of the communication quality of the channel to the receiver. Therefore, wireless communication networks have always used these parameters as an important criterion for measuring communication quality. The base station must also examine the signal-to-noise ratio or carrier-to-interference ratio or signal-to-interference ratio of the mobile terminal on the channel in various states such as entering the network, switching, and talking. And so on, in order to choose the right communication for it.

Generally, a mobile terminal can directly measure the communication quality of its downstream device, such as a base station or a relay station, to its downstream communication. For the global ^: wave mutual based on the IEEE 802.16e standard In a World-wide Inter-operability for Microwave Access (WiMAX) wireless network, mobile terminals generally have two measurement and reporting modes for CINR and similar communication quality parameters (SINR and SNR, etc.): normal mode and differential mode. In the normal mode, after measuring the CINR of the downlink channel of the base station or the relay station to the mobile terminal, the mobile terminal performs absolute quantization on the CINR according to a preset threshold, and then reports the quantized value to the base station; The mobile terminal compares the current CINR of the one or more downlink channels of the base station or the relay station to the mobile terminal, compares it with the CINR of the previous measurement of the one or more channels, and characterizes the CINR of the channel in a differential form. The change. The common CINR report is applicable to the subcarrier allocation mode of the Partial Usage of SubChannd (PUSC) and the subcarrier allocation mode of Adaptive Modulation and Coding (AMC). The differential CINR report is only applicable to the AMC mode. .

In a WiMAX network, the mobile terminal switches between the two reporting modes during operation. The CINR report information in these two modes can be transmitted in the same Channel Quality Indicator CHannel (CQICH), all using six-bit coding rules, of which the last five bits of importance (Least Singnificant Bits, LSB) The CINR value is carried in both modes, and the first most significant bit (MSB) is set to zero, as shown in Figure 1. Before the handover mode, the base station sends a handover indication to the mobile terminal, and locally records the mobile terminal's advertisement mode as the switched mode; after receiving the handover indication sent by the base station, the mobile terminal switches its reporting mode. And sending a CINR report message after the mode switch to the base station; after receiving the CINR report message, the base station performs subsequent processing according to the report mode of the mobile terminal and the received CINR report message recorded by the base station. It is worth noting that the CINR report reported by the mobile terminal does not carry the mode on which the report is based; the mode is maintained by the base station, and the base station default mobile terminal can receive the mode switching indication sent by the base station, and report the report with the maintenance thereof. The corresponding CINR report message for the mode. This may cause a problem: for various reasons, the mobile terminal may not receive the mode switching indication from the base station, and then still perform the CINR report in the original preset mode, and the CINR report received by the base station and the report mode maintained by it are not correspond. However, the base station cannot know this, causing it to misjudge the CINR parameter of one mode as a parameter based on another mode, and then perform inappropriate processing according to the erroneous judgment. Very clear This will reduce the interoperability and performance of the WiMAX network. However, to date, various industry drafts and standards, including the Recommended Practice Document (RPD), have not given reasonable solutions. Summary of the invention

In order to solve the above disadvantages of the prior art, the present invention proposes a method and apparatus for a mobile terminal to report communication quality to a base station in a wireless communication network. The mobile terminal transmits the communication quality report parameter and the mode information of the communication quality report to the base station; the base station receives the communication quality report parameter and the communication quality report mode from the mobile terminal, and performs corresponding processing.

According to an aspect of the present invention, a method for reporting, to a base station, a communication quality of a downlink communication path of a remote device of the mobile terminal to the mobile terminal in a mobile terminal of the wireless communication network, includes the following steps Obtaining a report mode of the communication quality; ii. generating a communication quality report parameter of the downlink communication path according to the report mode and the received downlink signal from the peer device; iii. The communication quality report parameters and the information of the report mode are transmitted to the base station.

Preferably, the above method includes the following steps in step iii: iii1. generating a communication quality report message, wherein the communication quality report message includes information of the communication shield report parameter and the report mode; iii2. A communication quality report message is sent to the base station.

According to another aspect of the present invention, a method for receiving, in a base station of a wireless communication network, a communication quality of a downlink communication path of a peer device of the mobile terminal to the mobile terminal reported by the mobile terminal, The following steps are as follows: 1. Acquire communication quality report parameters and report mode information of the downlink communication path from the mobile terminal; II. perform corresponding processing according to the communication quality report parameter and the report mode information.

Preferably, the foregoing method includes the following steps in step 1: receiving the communication quality report message from the mobile terminal, where the communication quality report message includes communication quality report parameters and report mode information; and the communication quality report Extract the message Communication quality report parameters and the report mode information.

According to a third aspect of the present invention, there is provided apparatus, in a mobile terminal of a wireless communication network, for reporting, to a base station, a communication quality of a downlink communication path of a remote device of the mobile terminal to the mobile terminal, wherein a report mode obtaining device, configured to obtain a report mode of the communication quality, and a report parameter generating device, configured to generate a communication shield report parameter according to the report mode and the received downlink signal from the peer device; And a report sending device, configured to send the communication quality report parameter and the information of the report mode to the base station.

Preferably, the report sending device further includes: a report message generating device, configured to generate a communication quality report message, wherein the communication quality report message includes the communication quality report parameter and the report mode information; the report message sending device And transmitting the communication quality report message to the base station to which the UE belongs.

According to a fourth aspect of the present invention, there is provided apparatus, in a base station of a wireless communication network, for receiving a communication quality of a downlink communication path of a peer device of the mobile terminal reported by the mobile terminal to the mobile terminal, wherein The method includes: a report obtaining device, configured to obtain communication quality report parameters and report mode information from the mobile terminal, and processing means, configured to perform corresponding processing according to the communication quality report parameter and the report mode information.

Preferably, the report obtaining apparatus further includes: a report message receiving device, configured to receive a communication quality report message from the mobile terminal, where the communication quality report message includes communication quality report parameters and report mode information; And for extracting the communication quality report parameter and the report mode information from the communication quality report message.

The present invention avoids the problem that the base station mistakes one reporting mode for another reporting mode in the process of reporting the communication quality by the mobile terminal. Although this problem has been recognized in the prior art, there has been no technical solution to solve this problem. The present invention creatively proposes a better method and device, so that the base station can obtain the correct reporting mode according to the communication quality report message of the mobile terminal, and then correspondingly correct processing, thereby solving the long-term unsolved problem. Technical issues, improved wireless communication Network interoperability and operational performance. DRAWINGS

Other features, objects, and advantages of the present invention will become more apparent from the detailed description of the accompanying drawings.

FIG. 1 shows a coding scheme of CQICH-based six-bit CIN report information in the existing IEEE 802.16e standard;

2 is a schematic diagram of a topology structure of a mobile terminal 1 in a cell under the jurisdiction of a base station 2 according to an embodiment of the present invention;

3 is a flow chart showing a method for the mobile terminal 1 to report a CINR to the base station 2 in the wireless communication network shown in FIG. 2 according to an embodiment of the present invention;

4 shows a schematic diagram of a coding scheme for six-bit CINR report information, in accordance with an embodiment of the present invention;

Figure 5 is a diagram showing an encoding scheme of another six-bit CINR report message, in accordance with an embodiment of the present invention;

Figure 6 is a block diagram showing an apparatus for reporting, by the mobile terminal 1, a CINR to the base station 2 in the wireless communication network shown in Figure 2, in accordance with another embodiment of the present invention.

In the figures, the same or similar reference numerals denote the same or similar components. detailed description

Referring now to Figures 2 to 5, the specific embodiment of the present invention will be described in detail from the perspective of a system method:

First embodiment

FIG. 2 is a schematic diagram showing the topology of the mobile terminal 1 in the cell under the jurisdiction of the base station 2 according to an embodiment of the present invention. Wherein, the wireless network is a WiMAX network. Those skilled in the art will appreciate that the present invention is not limited to the WiMAX network and topology illustrated in Figure 2, and that the present invention is equally applicable in other types of wireless networks or topologies.

3 is a flow chart showing a method of reporting a CINR by the mobile terminal 1 to the base station 2 in the wireless communication network shown in FIG. 2 in a specific embodiment of the present invention. One in the field A person skilled in the art can understand that the communication quality of the base station 2 to the mobile terminal 1 in this embodiment is CINR, which may also be the SINR, SNR or other communication quality parameters described above.

2 and 3, a method for the mobile terminal 1 to report the CINR of the downlink communication channel L to the base station 2 will be described in detail based on the present invention. In this embodiment, the mobile terminal 1 currently uses a normal CINR reporting mode, and requests switching to the differential mode to measure the communication quality of other channels due to the deterioration of the current downlink channel communication quality. It is contemplated that the present invention is not limited by this example, and the mobile terminal 1 can also switch from the differential mode to the normal mode or keep its current reporting mode unchanged.

First, in step S10, the mobile terminal 1 acquires the reporting mode it uses to report the CINR to the base station 24.

In one case, the mobile terminal 1 actively requests to switch to the differential mode.

Specifically, in step S100, the mobile terminal sends a report mode switching request to the base station 2 through a channel access report response (REPort-RSPonse, REP-RSP) message of a Medium Access Control (MAC), requesting to switch to Differential mode.

Then, in step S200, the base station 2 receives the mode switching request from the mobile terminal 1.

Next, in step S201, the base station 2 generates a report mode indication message according to the mode switching request. In this embodiment, the base station 2 can accommodate the indication information indicating that the mobile terminal 1 switches to the differential mode by using a CQICH Allocation IE in a downlink resource mapping table (DL-MAP) in the downlink subframe. Preferably, the indication information further includes related information indicating how the mobile terminal 1 reports the CINR in the uplink channel, such as used time slots, subcarriers, and the like.

In another case, the base station 2 wishes to optimize its downstream communication path to the mobile terminal 1, which actively instructs the mobile terminal 1 to switch to the differential mode. Then, the above steps S100 and S200 are not required. In step S201, the base station 2 actively generates a report mode indication message, which may be similar to the message in the foregoing step S201, and details are not described herein again.

Then, in step S202, the base station 2 sends the generated report mode indication message to the mobile terminal 1, for example, transmitting, by broadcast, the CQICH allocation information element in the downlink resource mapping table (DL-MAP) in the downlink subframe to the mobile Terminal 1. Technology in the field The operator can understand that the base station 2 can send the indication information to the mobile terminal 1 by using other methods, and the specific transmission method is not discussed in the present invention.

Then, in step S101, the mobile terminal 1 receives the report mode indication information sent by the base station 2, and knows that the base station 2 instructs it to switch to the differential mode for CINR reporting. Preferably, the mobile terminal 1 sets the differential mode indicated by the base station 2. A reporting mode that determines the quality of communication it is currently using.

It will be understood by those skilled in the art that the base station 2 has the decision right to report the mode switching request of the mobile terminal 1, which may also disagree with the mode switching request initiated by the mobile terminal 1. In this case, after receiving the report mode switching request from the mobile terminal 1, the base station 2 does not issue an instruction to the mobile terminal 1 to perform the handover. The mobile terminal 1 does not receive the handover indication from the base station, and it still maintains the CINR report, for example, in the normal reporting mode. Then, in step S10, the mobile terminal 1 uses the current communication quality reporting mode as the communication. Quality reporting mode.

Then, in step S11, the mobile terminal 1 generates a CINR report parameter to be reported according to the differential CINR reporting mode acquired in step S10 and the state of downlink communication from the base station 2 to the mobile terminal 1. The mobile terminal 1 can measure the CINR of the channel by using a preamble (Preamble) or a training sequence (midamble or pilot subcarrier) of the downlink signal sent by the base station 2 in the downlink channel, and generate a CINR report parameter of the required downlink communication. That is, communication quality report parameters.

In the present embodiment, the mobile terminal 1 switches to the differential reporting mode, for example, it will differentially report to the base station 2 information of the CINR of five selected downlink channels of better communication quality among the twelve logical channels. Then, in step S110 (not shown in FIG. 3), the mobile terminal 1 measures the CINR of the current five downlink channels; and then, in step S111 (not shown in FIG. 3), the mobile terminal 1 associates it with The CINRs of the five channels measured last time are compared, and the CINR changes of the five selected channels are sequentially characterized by using five bits, for example, a bit symbol is 1, indicating that the CINR of the downlink channel corresponding to the bit is increased. ldB; Another bit symbol is 0, indicating that the CINR of the downlink channel corresponding to the other bit is reduced by ldB. These five bits are the generated CINR reporting parameters, ie the communication quality reporting parameters. This specification only exemplifies the CINR encoding generation rules in the differential reporting mode. The encoding generation rule of the differential reporting mode CINR is not limited by the present specification, and a person skilled in the art can determine a corresponding differential encoding generation rule according to the actually reported channel number and the CINR variation quantization standard, which are all in the claims of the present invention. Within the coverage.

In another case, if the mobile terminal 1 needs to perform a normal CINR report, in the step S110 (not shown in FIG. 3), the mobile terminal 1 will pass the downlink signal in a certain selected channel. The preamble symbol or the training sequence obtains the CINR of the downlink channel; then, in step S111, (not shown in FIG. 3), the mobile terminal 1 calculates the CINR of the channel based on a predetermined CINR threshold B (in dB). The five-bit quantization is performed. The threshold may be agreed between the mobile terminal 1 and the base station 2 when the network accesses the network, and may be predetermined by other methods. For example, the quantization method may use the following formula:

≤(n- B), 0 < « < 31 ( 1 )

The CINR is the CINR (in dB) of the channel based on the actual measurement of the preamble or training sequence in the channel, and B is the aforementioned predetermined CINR threshold (in dB). Then, the quantized value is converted into binary data having a length of five bits, which are the acquired CINR reporting parameters, that is, communication quality report parameters. This specification only exemplifies the coding rules of CINR in the normal reporting mode. The CINR coding rules of the actual common reporting mode are not limited by the present specification, and are well known to those skilled in the art, and are not the focus of the present invention.

Next, in step S12, the mobile terminal 1 transmits the generated CINR report parameter and the indication information of the used CINR report mode to the base station 1.

Preferably, in step S120, the mobile terminal 1 generates a CINR report message, that is, a communication quality report message. The report message includes the CINR report parameters generated in step S11 and the indication information of the used CINR report mode. In this embodiment, the mobile terminal 1 uses the six-bit information in the CQICH to carry the CINR report message. Specifically, the mobile terminal 1 generates a CINR report by using the last five LSBs of the six bits of the CQICH. The parameters are reported, and the first MSB is used to indicate the indication information of the CINR report mode. Preferably, FIG. 4 is a schematic diagram of an encoding scheme for six-bit CINR report information in accordance with an embodiment of the present invention. The MSB symbol is 0, indicating that the CINR report parameter in the CINR report message is a quantized value of a CINR of a predetermined channel corresponding to the normal report mode; the MSB symbol is 1, indicating that the CINR report parameter in the CINR report message is corresponding. The change in CINR for the five selected channels in the differential reporting mode. In this embodiment, since the mobile terminal 1 switches to the differential reporting mode, the CINR report message generated by the mobile terminal 1 is as shown in the message corresponding to the differential reporting mode in FIG. In another embodiment, FIG. 5 shows a schematic diagram of an encoding scheme for another six-bit CINR report message, in accordance with an embodiment of the present invention. The MSB symbol is 1 corresponding to the normal report mode; the MSB symbol is 0 corresponds to the differential report mode. Neither of these encoding schemes will change the length of the CQICH message in the existing protocol. It should be noted that the four messages in the above two embodiments are merely for the sake of example, and the present invention is not limited to the report messages of the two formats, and those skilled in the art can, under the teachings of the present invention and the specification, Actual requirements do not have creative labor to produce report messages in other formats, and these messages are within the scope of the claims of the present invention.

Subsequently, in step S121, the mobile terminal 1 transmits the CINR report message generated in step S120 to the base station 2. Specifically, the mobile terminal 1 may report the CINR according to the information about how the mobile terminal 1 reports the CINR in the uplink channel, such as the used time slot, subcarrier, etc., according to the CQICH allocation information element from the base station 2. After the message is mapped, coded, and modulated, the CINR report message is sent to the base station 2 on the corresponding time slot and subcarrier. This description is by way of example only, and the specific transmission process is well known to those skilled in the art and is not the focus of the present invention.

In addition, those skilled in the art should understand that, in step S12, the mobile terminal 1 may also send the generated CINR report parameters and the indication information of the used CINR report mode to the base station 1 by using other methods such as separately transmitting.

Next, in step S21, the base station 2 acquires CINR report parameters and CINR report mode information from the mobile terminal 1.

Preferably, in step S210, the base station 2 receives the CINR from the mobile terminal 1. Report message, which contains CINR report parameters and CINR report mode information. Then, in step S211, the base station 2 extracts indication information of the CINR report parameter and the CINR report mode information from the CINR report message. Specifically, in this embodiment, the format of the CINR report message is as shown in FIG. 4, then the base station 2 extracts the CINR report parameter from the last five LSBs of the CINR, and extracts the CINR report from the first MSB of the CINR. The indication of the mode.

Then, in step S22, the base station 2 performs corresponding processing according to the indication information of the CINR report mode and the CINR report parameter. Specifically, in this embodiment, the mobile terminal 1 has switched to the differential mode, and the indication information symbol of the CINR reporting mode is 1, that is, the CINR reporting mode of the mobile terminal 1 is a differential reporting mode, and the base station 2 knows the mobile terminal 1 If it has switched to the mode indicated by the base station, it performs downlink communication adaptation for the mobile terminal 1 according to the differential CINR report parameter reported by the mobile terminal 1, for example, it selects one of the five selected channels with better CINR. Its downlink channel, and select the downlink coding and modulation scheme.

In another embodiment, the mobile terminal 1 does not receive the mode switching indication message from the base station 2 indicating that it switches to the differential reporting mode, but it still performs CINR reporting based on the normal reporting mode, and the indication information symbol of the CINR reporting mode is 0, that is, the CINR reporting mode of the mobile terminal 1 is the normal reporting mode, and the base station 2 knows that the mobile terminal 1 has not switched to the differential mode according to its own instruction, and then it will resend the reporting mode indication message to the mobile terminal 1 to instruct the switching thereof. To the differential mode; or continue to set a suitable downlink communication mode according to the CINR report of the normal mode of the mobile terminal 1, such as selecting a coding and modulation scheme.

The present invention is also not limited to the case where the peer device of the mobile terminal 1 is the base station 2, and reports the communication quality information of the downlink communication path from the base station 2 to the mobile terminal 1; the same applies to the mobile terminal 1 when switching between cells, to the serving base station. 2 reporting the communication quality information of the downstream device-non-serving base station 2 to the downlink communication path of the mobile terminal 1; it is also applicable to the mobile terminal 1 being within the coverage of the relay station 3 in the relay network, the mobile terminal 1 A case where the communication quality information of the downlink communication path of the opposite device-relay station 3 to the mobile terminal 1 is reported to the base station 2 by the relay station 3. One of ordinary skill in the art can, without the creation of the teachings of the present invention Sex labor places to develop specific implementation plans that are suitable for the actual network needs. The specific embodiments of the system method according to the present invention have been described in detail above. Specific embodiments of the present invention will be described in detail below from the perspective of system devices.

Second embodiment

In the present embodiment, the mobile terminal 1 includes means 10 for reporting the communication quality of the downlink communication path L of the base station 2 to the mobile terminal 1 to the base station 2, wherein the report mode acquisition means 100, the report parameter generation means 101, The transmitting device 102 is reported. The report mode obtaining apparatus 100 includes a first transmitting apparatus 1000 and a first receiving apparatus 1001; the reporting parameter generating apparatus 101 includes a second measuring apparatus 1010 and a comparing apparatus 1011; the report transmitting apparatus 102 includes a report message generating apparatus 1020 and a report message transmission Device 1021. The base station 2 comprises means 20 for receiving the communication quality of the downlink communication path L of the base station 2 to the mobile terminal 1 reported by the mobile terminal 1, wherein the handover request receiving means 200 is included, the indication message generating means 201, the indication message transmitting means 202 The report acquisition device 203 and the processing device 204. The report obtaining means 203 includes a report message receiving means 2030 and an extracting means 2031.

2 and 6, a device for reporting the CINR of the downlink communication channel L by the mobile terminal 1 to the base station 2 and its workflow according to the present invention will be described. For the sake of brevity, the mobile terminal 1 is currently using the normal CINR reporting mode, and its request to switch to the differential mode due to the deterioration of its current downlink communication quality. It is contemplated that the present invention is not limited by this example, and the mobile terminal 1 can also switch from the differential mode to the normal mode or keep its current reporting mode unchanged. A person skilled in the art can understand that the communication quality of the base station 2 to the mobile terminal 1 in this embodiment is CINR, which may also be a measurement parameter of SINR, SNR or other communication quality as described above.

First, the report mode acquisition means 100 acquires the report mode it uses to report the CINR to the base station 2.

In one case, the mobile terminal 1 actively requests to switch to the differential reporting mode. Specifically, the first sending device 1000 of the mobile terminal 1 sends a report mode switching request to the base station 2 through a channel measurement report response (REPort-RSPonse, REP-RSP) of the Medium Access Control (MAC), requesting to switch. To differential mode.

Then, the handover request receiving apparatus 200 of the base station 2 receives the mode switching request from the mobile terminal 1.

Next, the instruction message generating means 201 generates a report mode indication message based on the mode switching request. In this embodiment, the indication message generating means 201 may use the CQICH allocation information element in the downlink resource mapping table (DL-MAP) in the downlink subframe.

(CQICH Allocation IE) Accommodating the indication information indicating that the mobile terminal 1 switches to the differential mode. Preferably, the indication information further includes related information indicating how the mobile terminal 1 reports the CINR in the uplink channel, such as used time slots, subcarriers, and the like.

In another case, the base station 2 wishes to optimize its downstream communication path to the mobile terminal 1, which actively instructs the mobile terminal 1 to switch to the differential mode. Then, the report mode acquisition means 100 of the device 10 of the mobile terminal 1 does not require the above-described first transmission device 1000, and the device 20 of the base station 2 does not require the above-described handover request receiving means 200. At this time, the indication message generating device 201 (not shown in FIG. 6) actively generates a report mode indication message, which may be similar to the message in the above process, and details are not described herein again.

Then, the indication message sending device 202 sends the generated report mode indication message to the mobile terminal 1, for example, by broadcasting, the downlink resource mapping table in the downlink subframe.

The CQICH allocation information element in (DL-MAP) is transmitted to the mobile terminal. Those skilled in the art can understand that the base station can use other methods to send the indication information to the mobile terminal 1. The specific transmission method is not discussed in the present invention.

Then, the first receiving device 1001 of the device 10 of the mobile terminal 1 receives the report mode indication information sent by the base station 2, and knows that the base station 2 instructs it to switch to the differential mode for CINR reporting. Preferably, the device 10 of the mobile terminal 1 further Including setting device 103

The differential mode indicated by the base station 2 is set to the reporting mode currently used (not shown in Fig. 6).

It will be understood by those skilled in the art that the base station 2 has a decision right on the reporting mode switching request of the mobile terminal 1, and may also disagree with the mode switching request initiated by the mobile terminal 1. In this case, after receiving the report mode switching request from the mobile terminal 1, the base station 2 does not issue an instruction to the mobile terminal 1 to perform the handover. The mobile terminal 1 does not receive the handover indication from the base station, and it still keeps the CINR report, for example, in the normal reporting mode, and the current reporting mode does not change. Then, the execution device 104 of the mobile terminal 1 The reporting mode of the current communication quality is taken as the reporting mode of the communication quality.

Then, the report parameter generating means 101 generates a CINR report parameter to be reported based on the differential CINR report mode acquired in the report mode acquisition means 100 and the state of the downlink communication from the base station 2 to the mobile terminal 1. The mobile terminal 1 can measure the CINR of the channel by using a preamble (Preamble) or a training sequence (midamble or pilot subcarrier) of the downlink signal transmitted by the base station 2 in the downlink channel, and generate a CINR report parameter of the required downlink communication.

In the present embodiment, the mobile terminal 1 switches to the differential reporting mode, for example, it will differentially report to the base station 2 the downlink CINR information of five selected downlink channels of better communication quality among the twelve logical channels. The second measurement device 1010 of the report parameter generation device 101 measures the CINR of the current five downlink channels; then, the comparison device 1011 compares it with the CINR of the last five channels measured, and sequentially characterizes using five bits. The CINR change of the five selected channels, for example, a bit symbol is 1, indicating that the CINR of the downlink channel corresponding to the bit is increased by ldB; and another bit symbol is 0, indicating the CINR of the downlink channel corresponding to the other bit. Reduced ldB. These five bits are the generated CINR report parameters, that is, the communication quality report parameters. This specification only exemplifies the CINR coding generation rule in the differential reporting mode. The actual differential reporting mode CINR coding generation rule is not limited by the present specification. Those skilled in the art can quantize the actual reported channel number and CINR variation. The standard determines the corresponding differential code generation rules, which are within the scope of the claims of the present invention.

In another case, if the mobile terminal 1 needs to perform a normal CINR report, the report parameter generating means 101 includes a first measuring means 1010, and a quantizing means 1011. The first measuring device 1010 obtains the CINR of the downlink channel by using a preamble symbol or a training sequence of the downlink signal in a selected channel. Next, the quantization device 1011 is based on the predetermined one. The CINR threshold B (in dB) is quantized by five bits for the CINR of the channel. The threshold may be agreed with the base station 2 when the mobile terminal 1 accesses the network, and may also be predetermined by other methods. For example, the method of quantification can use the following formula:

Quantitative value = ≤ (nB), 0 < « < 31 ( 1 )

The CINR is the CINR (in dB) of the channel based on the actual measurement of the preamble or training sequence in the channel, and B is the aforementioned predetermined CINR threshold (in dB). Then, the quantized value is converted into binary data of five bits, which is the acquired CINR report parameter, that is, the communication quality report parameter. This specification only exemplifies the coding rules of CINR in the normal reporting mode. The CINR coding rules of the actual common reporting mode are not limited by the present specification, and are well known to those skilled in the art, and are not the focus of the present invention.

Next, the report transmitting device 102 transmits the generated CINR report parameter and the indication information of the used CINR report mode to the base station 1.

Preferably, the report message generating means 1020 generates a CINR report message. The report message includes indication information of the CINR report parameter generated by the report parameter generating means 101 and the used CINR report mode. In the present embodiment, the mobile terminal 1 uses the six-bit information in the CQICH to indicate a CINR report message. Specifically, the report message generating apparatus 102 generates a CINR 4 report parameter by using the last five LSB bearers, and uses the first bit MSB to indicate the indication information of the CINR report mode. Preferably, FIG. 4 is a schematic diagram of an encoding scheme for six-bit CINR report information in accordance with an embodiment of the present invention. The MSB symbol is 0, indicating that the CINR report parameter in the CINR report message is a quantized value of a CINR of a predetermined channel corresponding to the normal report mode; the MSB symbol is 1, indicating that the CINR report parameter in the CINR report message is corresponding. The change in CINR for the five selected channels in the differential reporting mode. In this embodiment, since the mobile terminal 1 switches to the differential advertising mode, the CINR report message generated by the mobile terminal 1 corresponds to the differential reporting mode in FIG. The message shows. In another embodiment, FIG. 5 illustrates a schematic diagram of an encoding scheme for another six-bit CINR report message, in accordance with an embodiment of the present invention. The MSB symbol is 1 corresponding to the normal report mode; the MSB symbol is 0 corresponds to the differential report mode. Neither of these encoding schemes will change the length of the CQICH message in the existing protocol. It should be noted that the report messages in the above two embodiments are for example only, and the present invention is not limited to the report messages of the two formats, and those skilled in the art can use the actual network according to the teachings of the present invention and the description. Reporting messages in other formats are developed without creative labor, and such messages are within the scope of the claims of the present invention.

Subsequently, the report message transmitting means 1021 transmits the CINR report message generated at the report message generating means 1020 to the base station 2. Specifically, the report message sending apparatus 103 may, according to the CQICH allocation information unit from the base station 2, instruct the mobile terminal 1 to report related information of the CINR in the uplink channel, for example, used time slots, subcarriers, etc., After the CINR report message is mapped, coded, and modulated, the CINR report message is sent to the base station 2 on the corresponding time slot and subcarrier. This description is by way of example only, and the specific transmission process is well known to those skilled in the art and is not the focus of the present invention.

In addition, those skilled in the art should understand that the report sending apparatus 102 may also send the generated CINR report parameters and the indication information of the used CINR report mode to the base station 1 by using other methods such as separately transmitting.

Next, the report acquisition means 203 of the device 20 of the base station 2 acquires the CINR report parameter and the CINR report mode information from the mobile terminal 1.

Preferably, the report message receiving means 2030 receives a CINR report message from the mobile terminal 1, the message containing CINR report parameters and CINR report mode information.

Then, the extracting means 2031 extracts the indication information of the CINR report parameter and the CINR report mode information from the CINR report message. Specifically, in this embodiment, the format of the CINR report message is as shown in FIG. 4, the extracting device extracts the CINR report parameter from the last five LSBs of the CINR, and extracts the CINR report from the first MSB of the CINR. The indication of the mode.

Subsequently, the processing device 204 according to the indication information of the CINR reporting mode and the CINR report Report the parameters and perform the corresponding processing. Specifically, in this embodiment, the mobile terminal 1 has switched to the differential mode, and the indication information symbol of the CINR reporting mode is 1, that is, the CINR reporting mode of the mobile terminal 1 is a differential reporting mode, and the base station 2 knows the mobile terminal 1 After switching to the mode indicated by the base station, the processing device 205 performs downlink communication adaptation for the mobile terminal 1 according to the differential CINR report parameter reported by the mobile terminal 1, for example, selecting a CINR from among the five selected channels. One as its downstream channel.

In another embodiment, the mobile terminal 1 does not receive the mode switching indication message from the base station 2 indicating that it switches to the differential reporting mode, and it still performs CINR reporting based on the normal reporting mode, the indication information symbol of the CINR reporting mode. If it is 0, that is, the CINR reporting mode of the mobile terminal 1 is the normal reporting mode, the base station 2 knows that the mobile terminal 1 has not switched to the differential mode according to its own instruction, and then the processing device 205 will resend the reporting mode indication message to the mobile terminal 1. Instructing to switch to the differential mode, or continuing to set a suitable downlink communication mode, such as a modulation and coding scheme, according to the CINR report of the normal mode of the mobile terminal 1.

It will be apparent to those skilled in the art that the present invention is not limited to reporting CINR, but may be applicable to reporting other communication quality parameters such as SINR and SNR.

The present invention is also not limited to the case where the peer device of the mobile terminal 1 is the base station 2, and reports the communication quality information of the downlink communication path from the base station 2 to the mobile terminal 1; the same applies to the mobile terminal 1 when switching between cells, to the serving base station. 24 reporting the communication quality information of the peer device non-serving base station 2 to the downlink communication path of the mobile terminal 1; it is also applicable to the relay network, the mobile terminal 1 is within the coverage of the relay station 3, the mobile terminal 1 A case where the communication quality information of the downlink communication path of the opposite device relay station 3 to the mobile terminal 1 is reported to the base station 2 by the relay station 3. One of ordinary skill in the art can, in the teachings of the present invention, develop a specific implementation that is suitable for the actual network needs without creative labor. The embodiments of the present invention have been described above, and it is to be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various modifications and changes within the scope of the appended claims.

Claims

A method for reporting, in a mobile terminal of a wireless communication network, a communication shield for reporting a downlink communication path of a remote device of the mobile terminal to the mobile terminal to the base station, wherein the method includes the following steps:

1. Obtain a report mode of the communication quality;

Ii. generating, according to the reporting mode and the received downlink signal from the peer device, a communication quality report parameter of the downlink communication path;

Iii. transmitting the communication quality report parameters and the information of the report mode to the base station.

The method according to claim 1, wherein the step iii further comprises:

1111. Generate a communication quality report message, where the communication quality report message includes information about the communication quality report parameter and the report mode;

1112. Send the communication quality report message to the base station.

The method according to claim 1 or 2, wherein the step i further comprises:

11. Receive a report mode indication message from the base station;

12. Determine the reporting mode based on the reporting mode indication message.

The method according to claim 3, wherein the step il further comprises:

- transmitting a report mode switch request message to the base station.

The method according to claim 3 or 4, wherein the step i further comprises:

- setting the reporting mode indicated by the report mode indication message to the current communication quality reporting mode.

The method according to any one of claims 1 to 5, wherein the step i further comprises:

0. The current communication quality reporting mode is used as the reporting mode of the communication shield.

The method according to any one of claims 1 to 6, wherein The communication quality includes a carrier-to-interference plus noise ratio of downlink communication, and the reporting mode of the communication shield includes a common carrier to interference plus noise ratio report, and/or a differential carrier to interference plus noise ratio report.

The method according to claim 7, wherein the reporting mode comprises a normal carrier to interference plus noise ratio report, and the step ii comprises:

Measuring a carrier to interference plus noise ratio of the downlink communication path;

And quantizing a carrier-to-interference plus noise ratio of the downlink communication path according to a predetermined carrier-to-interference plus noise ratio threshold and obtaining a quantized value, the quantized value being used as a communication quality report parameter of the downlink communication path.

The method according to claim 7 or 8, wherein the reporting mode comprises a differential carrier to interference plus noise ratio report, and the step ii comprises:

Measuring a current carrier to interference plus noise ratio of the downlink communication path;

Comparing a difference between a current carrier-to-interference plus noise ratio of the downlink communication path and a carrier-to-interference plus noise ratio of the downlink communication path measured last time, and comparing the result as a communication quality report of the downlink communication path parameter.

The method according to any one of claims 1 to 9, characterized in that the peer device comprises a base station and/or a relay station.

The method according to any one of claims 1 to 10, characterized in that the wireless communication network comprises a WiMAX network.

12. A method for receiving, in a base station of a wireless communication network, a communication quality of a downlink communication path of a mobile device to a downlink communication path of the mobile terminal, the method comprising the following steps:

I. acquiring communication quality report parameters and report mode information of the downlink communication path from the mobile terminal;

II. Perform corresponding processing according to the communication quality report parameter and the report mode information.

The method according to claim 12, wherein the step I comprises: - receiving the communication quality report message from the mobile terminal, wherein the communication quality report message includes a communication quality report parameter and a report Mode information Extracting the communication quality report parameters and the report mode information from the communication quality report message.

The method according to claim 12 or 13, wherein before the step I, the method further comprises:

A. Generate a report mode indication message;

B. transmitting the report mode indication message to the mobile terminal.

The method according to claim 14, wherein before the step A, the method further comprises:

Receiving a report mode switching request message from the mobile terminal;

The step A further includes:

- generating the report mode indication message according to the mode switch request message.

The method according to any one of claims 12 to 15, wherein the step II further comprises:

- if the report mode indicated by the extracted report mode information is the same as the report mode indicated by the report mode indication message, the corresponding process includes: performing downlink for the mobile terminal according to the communication quality report parameter Communication adaptation

- if the report mode indicated by the extracted report mode information is different from the report mode indicated by the report mode indication message, the corresponding process includes any one of the following:

Resending the report mode indication message to the mobile terminal, instructing it to perform a report mode switch;

And performing downlink communication adaptation for the mobile terminal according to the communication quality report parameter reported by the mobile terminal and the report mode indicated by the extracted report mode information.

The method according to any one of claims 12 to 16, wherein the communication quality comprises a carrier-to-interference plus noise ratio of downlink communication, and the reporting mode of the communication quality comprises common carrier and interference plus noise. Ratio report, and/or differential carrier to interference plus noise ratio report.

The method according to any one of claims 12 to 17, wherein the peer device comprises a base station and/or a relay station.

The method according to any one of claims 12 to 18, wherein the wireless communication network comprises a WiMAX network.

20. An apparatus for reporting, to a base station, a communication quality of a downlink communication path of a remote device of the mobile terminal to the mobile terminal in a mobile terminal of the wireless communication network, the method comprising:

a report mode obtaining means for obtaining a report mode of the communication quality;

a report parameter generating means, configured to generate a communication quality report parameter according to the report mode and the received downlink signal from the peer device;

a report transmitting means for transmitting the communication quality report parameter and the information of the report mode to the base station.

The device according to claim 20, wherein the report transmitting device comprises:

a report message generating means for generating a communication quality report message, wherein the communication quality report message includes information of the communication quality report parameter and the report mode;

a report message transmitting means for transmitting the communication quality report message to the base station to which it belongs.

The device according to claim 20 or 21, wherein the report mode obtaining device further comprises:

a first receiving means for receiving a report mode indication message from the base station; - a first determining means for determining the report mode based on the report mode indication message.

The device according to claim 22, wherein the reporting mode obtaining device further comprises:

a first transmitting means for transmitting a report mode switching request message to the base station.

The device according to claim 22 or 23, wherein the report mode obtaining device further comprises:

a setting means for setting a report mode indicated by the report mode indication message to a current communication quality report mode.

The device according to any one of claims 20 to 24, further comprising:

- Execution means, the current communication quality reporting mode is used as the reporting mode of the communication quality.

The apparatus according to any one of claims 20 to 25, wherein the communication quality comprises a carrier-to-interference plus noise ratio of downlink communication, and the reporting mode of the communication quality comprises common carrier and interference plus noise. Ratio report, and/or differential carrier to interference plus noise ratio report.

The device according to claim 26, wherein the report mode comprises a normal carrier to interference plus noise ratio report, and the report parameter generating device comprises:

a first measuring device for measuring a carrier to interference plus noise ratio of the downlink communication path;

And a quantization means for quantizing a carrier-to-interference plus noise ratio of the downlink communication path according to a predetermined carrier-to-interference plus noise ratio threshold and obtaining a quantized value, the quantized value being used as the communication quality report parameter.

The apparatus according to claim 26 or 27, wherein the reporting mode comprises a differential carrier to interference plus noise ratio report, and the report parameter generating means comprises:

- second measuring means for measuring the current downlink communication path carrier 4 and in particular the dry strength ratio of the acoustic port ^p Sang;

a comparing means for comparing a current carrier-to-interference plus noise ratio of the downlink communication path with a carrier-to-interference plus noise ratio of the last measured downlink communication path, and comparing the result as the communication quality Report parameters.

The apparatus according to any one of claims 20 to 28, characterized in that the peer device comprises a base station and/or a relay station.

30. Apparatus according to any one of claims 20 to 29, wherein the wireless communication network comprises a WiMAX network.

31. The mobile station is configured to receive the mobile terminal report in the base station of the wireless communication network, including: ' , , a report obtaining means for acquiring communication quality report parameters and report mode information from the mobile terminal;

a processing device for performing corresponding processing according to the communication quality report parameter and the report mode information.

The device according to claim 31, wherein the report obtaining device comprises:

a report message receiving device, configured to receive a communication quality report message from the mobile terminal, where the communication quality report message includes a communication quality report parameter and report mode information;

An extracting means for extracting the communication quality report parameter and the report mode information from the communication quality report message.

33. Apparatus according to claim 31 or claim 32, further comprising:

- an indication message generating means for generating a report mode indication message;

- an indication message transmitting means for transmitting the report mode indication message to the mobile terminal.

The device according to claim 32, further comprising:

a handover request receiving means for receiving a report mode switching request message from the mobile terminal;

The indication message generating apparatus is further configured to:

The device according to any one of claims 31 to 34, wherein the processing device is further configured to:

- if the report mode indicated by the extracted report mode information is the same as the report mode indicated by the report mode indication message, the corresponding process comprises: according to the communication quality report parameter, the mobile terminal Perform downlink communication adaptation;

- if the report mode indicated by the extracted report mode information is different from the report mode indicated by the report mode indication message, the corresponding process includes any one of the following: Retransmitting the report mode indication message to the mobile terminal, instructing it to perform a switching of a report mode;

The downlink communication adaptation is continued according to the reporting mode indicated by the communication quality report parameter and the extracted report mode information.

The apparatus according to any one of claims 31 to 35, wherein the communication quality comprises a carrier-to-interference plus noise ratio of downlink communication, and the reporting mode of the communication quality comprises a common carrier and interference plus noise. Ratio report, and/or differential carrier to interference plus noise ratio report.

The apparatus according to any one of claims 31 to 36, wherein the peer device comprises a base station and/or a relay station.

The apparatus according to any one of claims 31 to 37, wherein the wireless communication network comprises a WiMAX network.

A mobile terminal in a wireless communication network, characterized by comprising the apparatus according to any one of claims 20 to 30.

A base station in a wireless communication network, characterized by comprising the apparatus according to any one of claims 31 to 37.