CN102067521B - Method and device for a mobile terminal in a wireless network to report the communication quality - Google Patents
Method and device for a mobile terminal in a wireless network to report the communication quality Download PDFInfo
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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
Technical field
The present invention relates to based on cordless communication network, relate in particular to portable terminal in the cordless communication network to the method and apparatus of base station report communication quality.
Background technology
Communication quality is an important performance indexes in the cordless communication network, the base station is the mode that portable terminal selects itself and this base station to communicate according to the communication quality between portable terminal and this base station, comprise selection communication link and communication path in logic, also comprise the coded system of the signal of determining that base station down and portable terminal are up and modulation system etc., then improve the performance of portable terminal and inter base station communication, ensure user QoS, guarantee that cordless communication network normally moves.
Communication quality comprises many aspects, and it can consider merely the situation of wireless channel, also the antenna gain performance of transmitter and receiver can be taken into account.Signal to noise ratio (Signal to Noise power Ratio, SNR), carrier wave and interference plus noise are than (carrying the dried ratio of making an uproar, Carrier to Interferernce plus Noise power Ratio, CINR) and Signal to Interference plus Noise Ratio (Signal to Interference plus Noise Ratio, Signal to Interference plus Noise power Ratio, SINR) etc. parameter has been widely used in and has weighed in whole signals that receiver receives the strong and weak ratio between useful signal and the interference signal.For example, when SNR is larger, show all receiving in the signal that useful signal is stronger, can from whole reception signals, differentiate and isolate relatively easily useful signal; When SNR hour, show all receiving in the signals, useful signal a little less than, be submerged in the interference signal, difficulty is separated.These parameters can characterize this channel well for the communication quality of receiver.Therefore cordless communication network is always with the major criterion of these parameters as the measurement communication quality, the base station also must investigate portable terminal enter under network, switching, medium each state of conversation the signal to noise ratio on channel or carry dried make an uproar than or the performance such as Signal to Interference plus Noise Ratio, in order to be the suitable communication channel of its selection.
Usually, portable terminal can directly measure its opposite equip., and for example base station or relay station are to its communication quality of downlink communication.For worldwide interoperability for microwave access (the World-wide Inter-operability for Microwave Access based on IEEE 802.16e standard, WiMAX) wireless network, portable terminal generally has two kinds to measure and Report mode to CINR and similar communication quality parameter (SINR and SNR etc.): general mode and difference modes.Wherein, under general mode, portable terminal measures base station or relay station to the CINR of the down channel of this portable terminal, according to a default threshold value this CINR is quantized utterly, subsequently quantized value is reported to the base station; Under difference modes, portable terminal measures base station or relay station to the current C INR of one or more down channels of this portable terminal, it is compared with the last CINR that measures these one or more channels, characterize the situation of change of this channel CINR with the form of difference.Common CINR report is applicable to subchannel and partly uses (Partial Usage of SubChannel, the sub-carrier distribution manner of sub-carrier distribution manner PUSC) and Adaptive Modulation and Coding (Adaptive Modulation and Coding, AMC); Difference CINR report then is only applicable to the AMC mode.
In the WiMAX network, portable terminal can switch between these two kinds of Report modes in the course of the work.CINR report information under these two kinds of patterns can be at same channel quality indication channel (Channel Quality Indicator CHannel, CQICH) transmit in, all use the coding rule of six bits, five precedence significant bits (Least Singnificant Bits wherein, LSB) the CINR value under two kinds of patterns of carrying, and first Most Significant Bit (MostSingnificant Bits, MSB) zero setting, as shown in Figure 1.Before switch mode, the base station will be sent to portable terminal and be switched indication, and be the pattern after switching at the Report mode of its this portable terminal of local record; Portable terminal switches its Report mode after receiving the switching indication of sending the base station, and sends the CINR report message after pattern is switched to the base station; After the base station receives this CINR report message, carry out follow-up processing according to the Report mode of this portable terminal of its record and the CINR report message that receives.It should be noted that in the CINR report of portable terminal report and without this report based on pattern; This pattern by base station maintenance, and base station acquiescence portable terminal can be received the pattern switching indication of its transmission, and the corresponding CINR report message of Report mode of report and its maintenance.Can cause like this a problem: for various reasons, portable terminal might can't be received from the pattern of base station and switch indication, then still carry out the CINR report with original default pattern, then the CINR report that receives of base station is not corresponding with the Report mode of its maintenance.But this point can't be known in the base station, causes its CINR parameter with a kind of pattern to miss the parameter that is judged as based on another kind of pattern, then can carry out inappropriate processing according to the judgement of mistake.Clearly, can reduce like this interoperability and the runnability of WiMAX network.But, up to the present, comprise that recommended practice document (Recommended Practice Document, RPD) does not all provide rational solution at interior various industry drafts and standard.
Summary of the invention
Be to solve the above-mentioned shortcoming of prior art, the present invention proposes in the cordless communication network portable terminal to the method and apparatus of base station report communication quality.Portable terminal sends to the base station with the pattern information of communication quality report parameter and communication quality report; The base station according to receive from portable terminal communication quality report parameter and communication quality report pattern, and process accordingly.
According to an aspect of the present invention, a kind of method of the opposite equip. of this portable terminal to the communication quality in the downlink communication path of this portable terminal that be used for reporting to the base station in the portable terminal of cordless communication network is provided, wherein, comprise the steps: that i. obtains the Report mode of described communication quality; Ii. according to described Report mode and the downstream signal from described opposite equip. that receives, generate the communication quality report parameter in described downlink communication path; Iii. the information with described communication quality report parameter and described Report mode sends to described base station.
Preferably, said method comprises the steps: that in step I ii iii1. generates communication quality report message, and wherein, described communication quality report message comprises the information of described communication quality report parameter and described Report mode; Iii2. described communication quality report message is sent to described base station.
According to another aspect of the present invention, the method of a kind of opposite equip. of this portable terminal of reporting for mobile terminal receive in the base station of cordless communication network to the communication quality in the downlink communication path of this portable terminal is provided, wherein, comprise the steps: that I. obtains communication quality report parameter and the Report mode information from the described downlink communication path of described portable terminal; II. according to described communication quality report parameter and described Report mode information, carry out respective handling.
Preferably, said method comprises the steps: to receive the described communication quality report message from portable terminal in step I, wherein, comprise communication quality report parameter and Report mode information in the described communication quality report message; From described communication quality report message, extract described communication quality report parameter and described Report mode information.
According to a third aspect of the present invention, a kind of device of the opposite equip. of this portable terminal to the communication quality in the downlink communication path of this portable terminal that be used for reporting to the base station in the portable terminal of cordless communication network is provided, wherein, comprise: the Report mode deriving means, for the Report mode that obtains described communication quality; The Report Parameters generating apparatus is used for generating the communication quality report parameter according to described Report mode and the downstream signal from described opposite equip. that receives; The report dispensing device is used for the information of described communication quality report parameter and described Report mode is sent to described base station.
Preferably, above-mentioned report dispensing device further comprises: the report message generating apparatus, be used for generating communication quality report message, and wherein, described communication quality report message comprises the information of described communication quality report parameter and described Report mode; The report message dispensing device is used for described communication quality report message is sent to described base station under it.
According to a fourth aspect of the present invention, the device of a kind of opposite equip. of this portable terminal of reporting for mobile terminal receive in the base station of cordless communication network to the communication quality in the downlink communication path of this portable terminal is provided, wherein, comprise: the report acquisition device is used for obtaining communication quality report parameter and Report mode information from described portable terminal; Processing unit is used for according to described communication quality report parameter and described Report mode information, carries out respective handling.
Preferably, above-mentioned report acquisition device further comprises: the report message receiving system, be used for receiving the communication quality report message from described portable terminal, and wherein, comprise communication quality report parameter and Report mode information in the described communication quality report message; Extraction element is used for extracting described communication quality report parameter and described Report mode information from described communication quality report message.
The present invention has avoided in the process of portable terminal report communication quality, and the base station is thought a kind of Report mode by mistake to be the problem of another kind of Report mode.Although in the prior art the someone recognized this problem, the technical scheme that addresses this problem does not appear all the time.And the present invention has creatively proposed a kind of preferably method and device, make the base station get access to correct Report mode according to the communication quality report message of portable terminal, then make corresponding correct the processing, solve this long-term unsolved technical problem, improved interoperability and the runnability of cordless communication network.
Description of drawings
By reading the detailed description that non-limiting example is done of doing with reference to the following drawings, other features, objects and advantages of the present invention will become more apparent:
Fig. 1 shows the encoding scheme based on the six bit CINR report informations of CQICH in the existing IEEE 802.16e standard;
Fig. 2 is according to a specific embodiment of the present invention, the topological structure schematic diagram of portable terminal 1 in 2 jurisdiction districts, base station;
Fig. 3 shows according to a specific embodiment of the present invention, in the cordless communication network shown in Figure 2, and the flow chart of portable terminal 1 method of 2 report CINR to the base station;
Fig. 4 shows according to a specific embodiment of the present invention, the schematic diagram of the encoding scheme of six bit CINR report informations;
Fig. 5 shows according to a specific embodiment of the present invention, the schematic diagram of the encoding scheme of another six bit CINR report information;
Fig. 6 shows according to another specific embodiment of the present invention, in the cordless communication network shown in Figure 2, and the block diagram of portable terminal 1 device of 2 report CINR to the base station.
In the accompanying drawing, identical or the similar identical or similar parts of accompanying drawing sign representative.
Embodiment
, the specific embodiment of the present invention is described in detail from the angle of systems approach to Fig. 5 referring to accompanying drawing 2:
The first embodiment
Fig. 2 is according to a specific embodiment of the present invention, the topological structure schematic diagram of portable terminal 1 in 2 jurisdiction districts, base station.Wherein, this wireless network is a WiMAX network.Those skilled in the art will be understood that the present invention is not limited to WiMAX network and topological structure shown in Figure 2, and in the wireless network or topological structure of other types, the present invention is applicable equally.
Fig. 3 shows according to a specific embodiment of the present invention, in the cordless communication network shown in Figure 2, and the flow chart of portable terminal 1 method of 2 report CINR to the base station.One of ordinary skill in the art is appreciated that base station 2 that present embodiment lifts is CINR to the communication quality of portable terminal 1, and it also can be previously described SINR, SNR or other communication quality parameter.
The below is with reference to Fig. 2 and Fig. 3, and to according to the present invention, the method for portable terminal 1 from CINR of 2 report downlink communication channel L to the base station describes in detail.In the present embodiment, portable terminal 1 current use be common CINR Report mode, and owing to reasons such as the current downlink channel communication quality are worsening, and request switches to difference modes, to measure the communication quality of other channels.Can expect that the present invention is not limit by this example, portable terminal 1 also can switch to general mode from difference modes, or keeps its current Report mode constant.
At first, in step S10, portable terminal 1 obtain its to the base station 2 report CINR used Report modes.
In one case, portable terminal 1 active request switches to the difference report pattern.
Concrete, in step S100, portable terminal is by the channel measurement report response (REPort-RSPonse of medium access control layer (Medium Access Control, MAC), REP-RSP) message 2 sends the Report mode handover request to the base station, and request switches to difference modes.
Then, in step S200, the pattern handover request that base station 2 receives from portable terminal 1.
Then, in step S201, base station 2 generates the Report mode Indication message according to this pattern handover request.In the present embodiment, base station 2 can use the CQICH assignment information unit (CQICH Allocation IE) in the downlink resource mapping table (DL-MAP) in the descending sub frame to hold the indication information that this indicating mobile terminal 1 switches to difference modes.Preferably, comprise also in this indication information how indicating mobile terminal 1 reports the relevant information of CINR, for example employed time slot, subcarrier etc. in up channel.
In another case, its downlink communication path to portable terminal 1 is wished to optimize in base station 2, and its active indicating mobile terminal 1 switches to the difference report pattern.So, then do not need above-mentioned step S100 and S200.In step S201 ', base station 2 initiatively generates the Report mode Indication message, this message can with above-mentioned steps S201 in classes of messages seemingly, do not repeat them here.
Subsequently, in step S202, base station 2 sends to portable terminal 1 with the Report mode Indication message that generates, and for example, by broadcasting the CQICH assignment information unit in the downlink resource mapping table (DL-MAP) in the descending sub frame is sent to portable terminal 1.It will be understood by those skilled in the art that base station 2 can use additive method that this indication information is sent to portable terminal 1, concrete sending method is not that the present invention will discuss.
Then, in step S101, portable terminal 1 receives the Report mode indication information that base station 2 sends, and it switches to difference modes and carries out the CINR report therefrom to know base station 2 indication, preferably, portable terminal 1 is set as the difference modes of base station 2 indications the Report mode of its currently used communication quality.
The Report mode handover request that those skilled in the art will appreciate that the 2 pairs of portable terminals 1 in base station has power to make decision, and it also can disagree with the pattern handover request that portable terminal 1 is initiated.In this case, the indication of switching is not sent to portable terminal 1 in base station 2 after the Report mode handover request that receives from portable terminal 1.Portable terminal 1 does not receive the switching indication from the base station, it carries out for example periodic CINR report with regard to still remaining under the general report pattern, so in step S10, portable terminal 1 is with the Report mode of the current communication quality Report mode as described communication quality.
Then, in step S11, portable terminal 1 generates the CINR Report Parameters that needs report according to the difference CINR Report mode that gets access among the step S 10 and base station 2 state to the downlink communication of portable terminal 1.The leading symbol (Preamble) of the downstream signal that portable terminal 1 can send in down channel by base station 2 or training sequence (midamble or pilot subcarrier) etc. are measured the CINR of this channel, generate the CINR Report Parameters of required downlink communication, i.e. the communication quality report parameter.
In the present embodiment, portable terminal 1 switches to the difference report pattern, and for example, it is with difference ground five selected communication qualities in 12 logic channels of base station 2 reports information of the CINR of down channel preferably.So, in step S110 (not shown among Fig. 3), portable terminal 1 measures the CINR of current these five down channels; Then, in step S111 (not shown among Fig. 3), portable terminal 1 compares its CINR with last these five channels of measuring, and use five bits to characterize successively the CINR situation of change of these five selected channels, for example some bit symbols are 1, represent that the CINR of the down channel that this bit is corresponding has improved 1dB; Another bit symbol is 0, represents that the CINR of the down channel that this another bit is corresponding has reduced 1dB.The CINR Report Parameters of these five bits for generating, i.e. communication quality report parameter.This specification only illustrates the CINR coding create-rule under the difference report pattern, the coding create-rule of actual difference report pattern CINR is not limit by this specification, one of ordinary skill in the art can change the corresponding differential coding create-rule of quantification standard according to channel quantity and the CINR of actual report, and these all are in the coverage of claim of the present invention.
In another case, if portable terminal 1 need to carry out common CINR report, then, in step S110 ' (not shown among Fig. 3), the CINR that portable terminal 1 will obtain this down channel by leading symbol or the training sequence of the downstream signal in certain selected channel; Then, in step S111 ' (not shown among Fig. 3), portable terminal 1 carries out the quantification of five bits based on a predetermined CINR threshold value B (dB of unit) to the CINR of this channel.2 agreements of when this threshold value can be portable terminal 1 access network and base station also can adopt additive method to be scheduled to.For instance, the method for quantification can be used following formula:
Wherein, CINR is based on the CINR (dB of unit) of this channel that the actual measurement of leading symbol in the channel or training sequence obtains, and B is aforesaid predetermined CINR threshold value (dB of unit).Then, quantized value is converted to the binary data that length is five bits, these five bits are the CINR Report Parameters that gets access to, i.e. communication quality report parameter.This specification only illustrates the coding rule of the CINR under the general report pattern, and the CINR coding rule of actual general report pattern is not limit by this specification, and it is well known to those skilled in the art, is not the emphasis that the present invention discusses.
Then, in step S12, portable terminal 1 sends to base station 1 with the CINR Report Parameters of generation and the indication information of employed CINR Report mode.
Preferably, in step S120, portable terminal 1 generates CINR report message, i.e. communication quality report message.Comprise the CINR Report Parameters that generates among the step S11 and the indication information of employed CINR Report mode in this report message.In the present embodiment, six bit informations among the portable terminal 1 usefulness CQICH carry the CINR report message.Concrete, rear five LSB carrying in six bits of portable terminal 1 use CQICH generates the CINR Report Parameters, and uses first MSB to represent the indication information of CINR Report mode.Preferably, Fig. 4 has gone out according to a specific embodiment of the present invention, the schematic diagram of the encoding scheme of six bit CINR report informations.Wherein, the MSB symbol is 0, shows that CINR Report Parameters in this CINR report message is the quantized value corresponding to the CINR of a predetermined channel of general report pattern; The MSB symbol is 1, shows that CINR Report Parameters in this CINR report message is the changing value corresponding to the CINR of five selected channels of difference report pattern.In the present embodiment, because portable terminal 1 switches to the difference report pattern, then the CINR report message that generates of portable terminal 1 is shown in message corresponding to difference report pattern among Fig. 4.In another embodiment, Fig. 5 shows according to a specific embodiment of the present invention, the schematic diagram of the encoding scheme of another six bit CINR report information.Wherein, the MSB symbol general report pattern that has been 1 correspondence; Difference report pattern that the MSB symbol has been 0 correspondence.These two kinds of encoding schemes can not change the length of the CQICH message in the existing protocol.It should be noted that; more than report message among two embodiment only be for for example; the present invention is not limited to the report message of these two kinds of forms; persons skilled in the art can be under the instruction of the present invention and specification; according to the actual requirements without creative work make the report message of extended formatting, these message all are in the claim protection range of the present invention.
Subsequently, in step S121, the CINR report message that portable terminal 1 will generate in step S120 sends to base station 2.Concrete, how portable terminal 1 can report according to the indicating mobile terminal 1 that comprises in the CQICH assignment information unit from base station 2 relevant information of CINR in up channel, for example employed time slot, subcarrier etc., this CINR report message through mapping, coding with after modulating, is being sent to base station 2 with this CINR report message on corresponding time slot and subcarrier.This specification is only done for example, and concrete process of transmitting is well-known to those skilled in the art, is not the emphasis that the present invention discusses.
In addition, those skilled in the art will be understood that in step S12, and portable terminal 1 also can adopt such as transmission respectively and wait other modes that the CINR Report Parameters that generates and the indication information of employed CINR Report mode are sent to base station 1.
Then, in step S21, base station 2 gets access to from the CINR Report Parameters of portable terminal 1 and CINR Report mode information.
Preferably, in step S210, base station 2 receives the CINR report message from portable terminal 1, contains CINR Report Parameters and CINR Report mode information in this message.
Then, in step S211, base station 2 extracts the indication information of CINR Report Parameters and CINR Report mode information from the CINR report message.Concrete, in the present embodiment, the form of CINR report message as shown in Figure 4, then base station 2 extracts the CINR Report Parameters in rear five LSB of CINR, and extracts the indication information of CINR Report mode in first MSB of CINR.
Subsequently, in step S22, process accordingly according to indication information and the CINR Report Parameters of CINR Report mode base station 2.Concrete, in the present embodiment, portable terminal 1 has switched to difference modes, the indication information symbol of its CINR Report mode is 1, the CINR Report mode that namely represents portable terminal 1 is the difference report pattern, then base station 2 is known portable terminal 1 and has been switched to the indicated pattern in this base station, then it is according to the difference CINR Report Parameters of portable terminal 1 report, to carry out downlink communication adaptive for portable terminal 1, for example be that it selects more excellent one of CINR as its down channel from five selected channels, and select downlink coding and modulation scheme etc.
In another embodiment, portable terminal 1 does not receive that it switches to the pattern switch indicating information of difference report pattern from the indication of base station 2, then it still carries out the CINR report based on the general report pattern, the indication information symbol of its CINR Report mode is 0, the CINR Report mode that namely represents portable terminal 1 is the general report pattern, then portable terminal 1 is known in base station 2 does not have not switch to difference modes by the indication of oneself, then it will send the Report mode Indication message to portable terminal 1 again, indicate it to switch to difference modes; Perhaps continue the CINR report according to the general mode of portable terminal 1, for it sets suitable downlink communication mode, as selecting coding and modulation scheme etc.
The opposite equip. that the present invention also is not limited to portable terminal 1 is the situation of base station 2, the communication quality information in report base station 2 to the downlink communication path of portable terminal 1; When it is equally applicable to portable terminal 1 and switches in the minizone, the communication quality information to serving BS 2 its opposite equip.-non-serving base stations 2 ' of report to the downlink communication path of this portable terminal 1; It also is applicable in junction network, and portable terminal 1 is in the coverage of relay station 3, portable terminal 1 by relay station 3 to the base station 2 its opposite equip.-relay stations 3 of report to the situation of the communication quality information in the downlink communication path of portable terminal 1.Persons skilled in the art can be under instruction of the present invention, without creative work make the specific embodiments that is suitable for the real network needs.
More than the specific embodiment according to systems approach of the present invention is described in detail.Below will the specific embodiment of the present invention be described in detail from the angle of system and device.
The second embodiment
Fig. 6 shows according to another specific embodiment of the present invention, in the cordless communication network shown in Figure 2, and the block diagram of portable terminal 1 device of 2 report CINR to the base station.
In the present embodiment, portable terminal 1 comprises for 2 report base stations 2 wherein, comprise Report mode deriving means 100 to the device 10 of the communication quality of the downlink communication path L of this portable terminal 1 to the base station, Report Parameters generating apparatus 101, report dispensing device 102.Wherein, Report mode deriving means 100 comprises the first dispensing device 1000 and first receiving device 1001; Report Parameters generating apparatus 101 comprises the second measurement mechanism 1010 and comparison means 1011; Report dispensing device 102 comprises report message generating apparatus 1020 and report message dispensing device 1021.Base station 2 comprises for the base station 2 of the mobile terminal receive 1 report device 20 to the communication quality of the downlink communication path L of this portable terminal 1, wherein, comprise handover request receiving system 200, Indication message generating apparatus 201, Indication message dispensing device 202, report acquisition device 203, processing unit 204.Wherein, report acquisition device 203 comprises report message receiving system 2030 and extraction element 2031.
The below is with reference to Fig. 2 and Fig. 6, to according to the present invention, and device from CINR of 2 report downlink communication channel L to the base station and the workflow thereof of portable terminal 1.For simplicity's sake, portable terminal 1 current use be common CINR Report mode, owing to reasons such as its current downlink communication quality deteriorations, its request switches to difference modes.Can expect that the present invention is not limit by this example, portable terminal 1 also can switch to general mode from difference modes, or keeps its current Report mode constant.One of ordinary skill in the art is appreciated that base station 2 that present embodiment lifts is CINR to the communication quality of portable terminal 1, and it also can be the parameter of measurement of previously described SINR, SNR or other communication qualities.
At first, Report mode deriving means 100 obtain its to the base station 2 report CINR used Report modes.
In one case, portable terminal 1 active request switches to the difference report pattern.
Concrete, the first dispensing device 1000 of portable terminal 1 is by medium access control layer (Medium Access Control, MAC) channel measurement report response (REPort-RSPonse, REP-RSP) is 2 transmission Report mode handover request to the base station, and request switches to difference modes.
Then, handover request receiving system 200 receptions of base station 2 are from the pattern handover request of portable terminal 1.
Then, Indication message generating apparatus 201 generates the Report mode Indication message according to this pattern handover request.In the present embodiment, Indication message generating apparatus 201 can use the CQICH assignment information unit (CQICH Allocation IE) in the downlink resource mapping table (DL-MAP) in the descending sub frame to hold the indication information that this indicating mobile terminal 1 switches to difference modes.Preferably, also comprise the how relevant information of report CINR in up channel of indicating mobile terminal 1 in this indication information, employed time slot for example, subcarrier etc.
In another case, its downlink communication path to portable terminal 1 is wished to optimize in base station 2, and its active indicating mobile terminal 1 switches to the difference report pattern.So, 100 of the Report mode deriving means of the device 10 of portable terminal 1 do not need the first above-mentioned dispensing device 1000, and the device 20 of base station 2 does not need above-mentioned handover request receiving system 200.At this moment, Indication message generating apparatus 201 ' (not shown among Fig. 6) initiatively generates the Report mode Indication message, this message can with said process in classes of messages seemingly, do not repeat them here.
Subsequently, Indication message dispensing device 202 sends to portable terminal 1 with the Report mode Indication message that generates, and for example, by broadcasting the CQICH assignment information unit in the downlink resource mapping table (DL-MAP) in the descending sub frame is sent to portable terminal.It will be understood by those skilled in the art that the base station can use additive method that this indication information is sent to portable terminal 1, concrete sending method is not that the present invention will discuss.
Then, the first receiving device 1001 of the device 10 of portable terminal 1 receives the Report mode indication information that base station 2 sends, and it switches to difference modes and carries out the CINR report therefrom to know base station 2 indication, preferably, the device 10 of portable terminal 1 comprises that also setting device 103 (not shown among Fig. 6) is set as its currently used Report mode with the difference modes of base station 2 indications.
The Report mode handover request that those skilled in the art will appreciate that the 2 pairs of portable terminals 1 in base station has power to make decision, and it also can disagree with the pattern handover request that portable terminal 1 is initiated.In this case, the indication of switching is not sent to portable terminal 1 in base station 2 after the Report mode handover request that receives from portable terminal 1.Portable terminal 1 does not receive the switching indication from the base station, it carries out for example periodic CINR report with regard to still remaining under the general report pattern, its current Report mode can not change yet, so, the final controlling element 104 of portable terminal 1 (not shown among Fig. 6) is with the Report mode of the current communication quality Report mode as described communication quality.
Then, Report Parameters generating apparatus 101 generates the CINR Report Parameters that needs report according to the difference CINR Report mode that gets access in the Report mode deriving means 100 and base station 2 state to the downlink communication of portable terminal 1.The leading symbol (Preamble) of the downstream signal that portable terminal 1 can send in down channel by base station 2 or training sequence (midamble or pilot subcarrier) etc. are measured the CINR of this channel, generate the CINR Report Parameters of required downlink communication.
In the present embodiment, portable terminal 1 switches to the difference report pattern, and for example, it is with difference ground five selected communication qualities in 12 logic channels of base station 2 reports descending CINR information of down channel preferably.The second measurement mechanism 1010 of Report Parameters generating apparatus 101 measures the CINR of current these five down channels; Then, comparison means 1011 compares its CINR with last these five channels of measuring, and use five bits to characterize successively the CINR situation of change of these five selected channels, for example some bit symbols are 1, represent that the CINR of the down channel that this bit is corresponding has improved 1dB; Another bit symbol is 0, represents that the CINR of the down channel that this another bit is corresponding has reduced 1dB.These five bits are the CINR Report Parameters of generation, i.e. communication quality report parameter.This specification only illustrates the CINR coding create-rule under the difference report pattern, the coding create-rule of actual difference report pattern CINR is not limit by this specification, one of ordinary skill in the art can change the corresponding differential coding create-rule of quantification standard according to channel quantity and the CINR of actual report, and these all are in the coverage of claim of the present invention.
In another case, if portable terminal 1 need to carry out common CINR report, then Report Parameters generating apparatus 101 comprises the first measurement mechanism 1010 ' and quantization device 1011 '.The CINR that the first measurement mechanism 1010 ' will obtain this down channel by leading symbol or the training sequence of the downstream signal in certain selected channel; Then, quantization device 1011 ' carries out the quantification of five bits based on a predetermined CINR threshold value B (dB of unit) to the CINR of this channel.2 agreements of when this threshold value can be portable terminal 1 access network and base station also can adopt additive method to be scheduled to.For instance, the method for quantification can be used following formula:
Wherein, CINR is based on the CINR (dB of unit) of this channel that the actual measurement of leading symbol in the channel or training sequence obtains, and B is aforesaid predetermined CINR threshold value (dB of unit).Then, quantized value is converted to the binary data that length is five bits, these five bits are the CINR Report Parameters that gets access to, i.e. communication quality report parameter.This specification only illustrates the coding rule of the CINR under the general report pattern, and the CINR coding rule of actual general report pattern is not limit by this specification, and it is well known to those skilled in the art, is not the emphasis that the present invention discusses.
Then, report dispensing device 102 sends to base station 1 with the CINR Report Parameters of generation and the indication information of employed CINR Report mode.
Preferably, report message generating apparatus 1020 generates the CINR report message.Comprise the CINR Report Parameters of Report Parameters generating apparatus 101 generations and the indication information of employed CINR Report mode in this report message.In the present embodiment, six bit informations among the portable terminal 1 usefulness CQICH represent the CINR report message.Concrete, report message generating apparatus 102 uses rear five LSB carrying to generate the CINR Report Parameters, and uses first MSB to represent the indication information of CINR Report mode.Preferably, Fig. 4 has gone out according to a specific embodiment of the present invention, the schematic diagram of the encoding scheme of six bit CINR report informations.Wherein, the MSB symbol is 0, shows that CINR Report Parameters in this CINR report message is the quantized value corresponding to the CINR of a predetermined channel of general report pattern; The MSB symbol is 1, shows that CINR Report Parameters in this CINR report message is the changing value corresponding to the CINR of five selected channels of difference report pattern.In the present embodiment, because portable terminal 1 switches to the difference report pattern, then the CINR report message that generates of portable terminal 1 is shown in message corresponding to difference report pattern among Fig. 4.In another embodiment, Fig. 5 shows according to a specific embodiment of the present invention, the schematic diagram of the encoding scheme of another six bit CINR report information.Wherein, the MSB symbol general report pattern that has been 1 correspondence; Difference report pattern that the MSB symbol has been 0 correspondence.These two kinds of encoding schemes can not change the length of the CQICH message in the existing protocol.It should be noted that; more than report message among two embodiment only be for for example; the present invention is not limited to the report message of these two kinds of forms; persons skilled in the art can be under the instruction of the present invention and specification; according to real network without creative work make the report message of extended formatting, these message all are in the claim protection range of the present invention.
Subsequently, report message dispensing device 1021 will send to base station 2 at the CINR report message that report message generating apparatus 1020 generates.Concrete, how report message dispensing device 103 can report according to the indicating mobile terminal 1 that comprises in the CQICH assignment information unit from base station 2 relevant information of CINR in up channel, for example employed time slot, subcarrier etc., this CINR report message through mapping, coding with after modulating, is being sent to base station 2 with this CINR report message on corresponding time slot and subcarrier.This specification is only done for example, and concrete process of transmitting is well-known to those skilled in the art, is not the emphasis that the present invention discusses.
In addition, those skilled in the art will be understood that report dispensing device 102 also can adopt such as transmissions respectively and wait other modes that the CINR Report Parameters of generation and the indication information of employed CINR Report mode are sent to base station 1.
Then, the report acquisition device 203 of the device 20 of base station 2 gets access to CINR Report Parameters and the CINR Report mode information from portable terminal 1.
Preferably, report message receiving system 2030 receives the CINR report message from portable terminal 1, contains CINR Report Parameters and CINR Report mode information in this message.
Then, extraction element 2031 extracts the indication information of CINR Report Parameters and CINR Report mode information from the CINR report message.Concrete, in the present embodiment, the form of CINR report message as shown in Figure 4, then extraction element extracts the CINR Report Parameters in rear five LSB of CINR, and extracts the indication information of CINR Report mode in first MSB of CINR.
Subsequently, processing unit 204 is processed accordingly according to indication information and the CINR Report Parameters of CINR Report mode.Concrete, in the present embodiment, portable terminal 1 has switched to difference modes, the indication information symbol of its CINR Report mode is 1, the CINR Report mode that namely represents portable terminal 1 is the difference report pattern, then base station 2 is known portable terminal 1 and has been switched to the indicated pattern in this base station, then processing unit 205 is according to the difference CINR Report Parameters of portable terminal 1 report, to carry out downlink communication adaptive for portable terminal 1, for example is that it selects more excellent one of CINR as its down channel from five selected channels.
In another embodiment, portable terminal 1 does not receive that it switches to the pattern switch indicating information of difference report pattern from the indication of base station 2, then it still carries out the CINR report based on the general report pattern, the indication information symbol of its CINR Report mode is 0, the CINR Report mode that namely represents portable terminal 1 is the general report pattern, then portable terminal 1 is known in base station 2 does not have not switch to difference modes by the indication of oneself, then processing unit 205 will send the Report mode Indication message to portable terminal 1 again, indicate it to switch to difference modes, perhaps continue the CINR report according to the general mode of portable terminal 1, for it sets suitable downlink communication mode, such as modulation and encoding scheme etc.
It will be understood by those skilled in the art that the present invention is not limited only to report CINR, also goes for reporting the situation of other communication quality parameter such as SINR and SNR.
The opposite equip. that the present invention also is not limited to portable terminal 1 is the situation of base station 2, the communication quality information in report base station 2 to the downlink communication path of portable terminal 1; When it is equally applicable to portable terminal 1 and switches in the minizone, the communication quality information to serving BS 2 its opposite equip. non-serving base stations 2 ' of report to the downlink communication path of this portable terminal 1; It also is applicable in junction network, and portable terminal 1 is in the coverage of relay station 3, portable terminal 1 by relay station 3 to the base station 2 its opposite equip. relay stations 3 of report to the situation of the communication quality information in the downlink communication path of portable terminal 1.Persons skilled in the art can be under instruction of the present invention, without creative work make the specific embodiments that is suitable for the real network needs.
More than specific embodiments of the invention are described, it will be appreciated that the present invention is not limited to above-mentioned specific execution mode, those skilled in the art can make various variants and modifications within the scope of the appended claims.
Claims (38)
1. one kind wherein, comprises the steps: the method for the opposite equip. of this portable terminal to the communication quality in the downlink communication path of this portable terminal for reporting to the base station in the portable terminal of cordless communication network
I. obtain the Report mode of described communication quality;
Ii. according to described Report mode and the downstream signal from described opposite equip. that receives, generate the communication quality report parameter in described downlink communication path;
Iii. the information with described communication quality report parameter and described Report mode sends to described base station, and the information of described Report mode shows common carrier wave and the report of interference plus noise ratio, or difference carrier and the report of interference plus noise ratio.
2. method according to claim 1 is characterized in that, described step I ii also comprises:
Iii1. generate communication quality report message, wherein, described communication quality report message comprises the information of described communication quality report parameter and described Report mode;
Iii2. described communication quality report message is sent to described base station.
3. method according to claim 1 and 2 is characterized in that, described step I also comprises:
I1. receive the Report mode Indication message from described base station;
I2. determine described Report mode according to described Report mode Indication message.
4. method according to claim 3 is characterized in that, also comprises before the described step I 1:
-to described base station transmission Report mode handover request message.
5. method according to claim 3 is characterized in that, also comprises after the described step I:
-the indicated Report mode of described Report mode Indication message is set as the Report mode of current communication quality.
6. each described method in 2 according to claim 1 is characterized in that described step I also comprises:
O. with the Report mode of the current communication quality Report mode as described communication quality.
7. each described method in 2 according to claim 1 is characterized in that described communication quality comprises the carrier wave and interference plus noise ratio of downlink communication.
8. method according to claim 7 is characterized in that, described Report mode comprises common carrier wave and the report of interference plus noise ratio, and described step I i comprises:
The carrier wave and interference plus noise ratio in the described downlink communication of-measurement path;
-according to predetermined carrier wave and interference plus noise than threshold value, carrier wave and the interference plus noise ratio in described downlink communication path quantized and obtains quantized value, with the communication quality report parameter of described quantized value as described downlink communication path.
9. method according to claim 7 is characterized in that, described Report mode comprises difference carrier and the report of interference plus noise ratio, and described step I i comprises:
The current carrier wave and interference plus noise ratio in the described downlink communication of-measurement path;
The current carrier wave in-more described downlink communication path and interference plus noise than and the difference of the carrier wave in the described downlink communication path that measures of last time and interference plus noise ratio, with the communication quality report parameter of comparative result as described downlink communication path.
10. each described method in 2 according to claim 1 is characterized in that described opposite equip. comprises base station and relay station.
11. each described method in 2 is characterized in that described cordless communication network comprises the WiMAX network according to claim 1.
12. the opposite equip. of this portable terminal of reporting for mobile terminal receive in the base station of cordless communication network wherein, comprises the steps: to the method for the communication quality in the downlink communication path of this portable terminal
A. generate the Report mode Indication message;
B. send described Report mode Indication message to described portable terminal;
Behind described steps A and described step B, also comprise the steps:
I. obtain communication quality report parameter and Report mode information from the described downlink communication path of described portable terminal;
II. according to described communication quality report parameter and described Report mode information, carry out respective handling, wherein, described Step II also comprises:
If the indicated Report mode of the indicated Report mode of-the described Report mode information of obtaining and described Report mode Indication message is different, described respective handling comprise following each:
Again send described Report mode Indication message to described portable terminal, indicate it to carry out the switching of Report mode;
According to the indicated Report mode of the described communication quality report parameter of described portable terminal report and the Report mode information of obtaining, to carry out downlink communication adaptive for described portable terminal;
Wherein, described Report mode information shows common carrier wave and the report of interference plus noise ratio, or difference carrier or the report of interference plus noise ratio.
13. method according to claim 12 is characterized in that, described step I comprises:
-receive the communication quality report message from portable terminal, wherein, comprise communication quality report parameter and Report mode information in the described communication quality report message;
-described communication quality report the parameter of extraction and described Report mode information from described communication quality report message.
14. method according to claim 13 is characterized in that, also comprises before the described steps A:
-reception is from the Report mode handover request message of portable terminal;
Described steps A also comprises:
-according to described pattern handover request message, generate described Report mode Indication message.
15. each described method in 14 according to claim 12 is characterized in that described Step II also comprises:
If the indicated Report mode of the indicated Report mode of-the described Report mode information of obtaining and described Report mode Indication message is identical, described respective handling comprises: according to described communication quality report parameter, to carry out downlink communication adaptive for described portable terminal.
16. each described method in 14 is characterized in that described communication quality comprises the carrier wave and interference plus noise ratio of downlink communication according to claim 12.
17. each described method in 14 is characterized in that described opposite equip. comprises base station and relay station according to claim 12.
18. each described method in 14 is characterized in that described cordless communication network comprises the WiMAX network according to claim 12.
19. one kind wherein, comprising the device of the opposite equip. of this portable terminal to the communication quality in the downlink communication path of this portable terminal for reporting to the base station in the portable terminal of cordless communication network:
-Report mode deriving means, for the Report mode that obtains described communication quality, the information of described Report mode shows common carrier wave and interference plus noise than report, or difference carrier and the report of interference plus noise ratio;
-Report Parameters generating apparatus is used for generating the communication quality report parameter according to described Report mode and the downstream signal from described opposite equip. that receives;
-report dispensing device is used for the information of described communication quality report parameter and described Report mode is sent to described base station.
20. device according to claim 19 is characterized in that, described report dispensing device comprises:
-report message generating apparatus is used for generating communication quality report message, and wherein, described communication quality report message comprises the information of described communication quality report parameter and described Report mode;
-report message dispensing device is used for described communication quality report message is sent to described base station.
21. according to claim 19 or 20 described devices, it is characterized in that described Report mode deriving means also comprises:
-first receiving device is used for receiving the Report mode Indication message from described base station;
-the first determines device, is used for determining described Report mode according to this report pattern Indication message.
22. device according to claim 21 is characterized in that, described Report mode deriving means also comprises:
The-the first dispensing device is used for to described base station transmission Report mode handover request message.
23. device according to claim 21 is characterized in that, described Report mode deriving means also comprises:
-setting device is for the Report mode that the indicated Report mode of described Report mode Indication message is set as current communication quality.
24. each described device in 20 according to claim 19 is characterized in that this device also comprises:
-final controlling element is with the Report mode of the current communication quality Report mode as described communication quality.
25. each described device in 20 is characterized in that described communication quality comprises the carrier wave and interference plus noise ratio of downlink communication according to claim 19.
26. device according to claim 25 is characterized in that, described Report mode comprises common carrier wave and the report of interference plus noise ratio, and described Report Parameters generating apparatus comprises:
The-the first measurement mechanism is for the carrier wave and interference plus noise ratio of measuring described downlink communication path;
-quantization device is used for according to predetermined carrier wave and interference plus noise than threshold value, carrier wave and the interference plus noise ratio in described downlink communication path quantized and obtains quantized value, with described quantized value as described communication quality report parameter.
27. device according to claim 25 is characterized in that, described Report mode comprises difference carrier and the report of interference plus noise ratio, and described Report Parameters generating apparatus comprises:
The-the second measurement mechanism is for the current carrier wave and interference plus noise ratio of measuring described downlink communication path;
-comparison means, be used for the current carrier wave in more described downlink communication path and interference plus noise than and the size of the carrier wave in the described downlink communication path that measures of last time and interference plus noise ratio, with comparative result as described communication quality report parameter.
28. each described device in 20 is characterized in that described opposite equip. comprises base station and relay station according to claim 19.
29. each described device in 20 is characterized in that described cordless communication network comprises the WiMAX network according to claim 19.
30. the opposite equip. of this portable terminal of reporting for mobile terminal receive in the base station of cordless communication network wherein, comprising to the device of the communication quality in the downlink communication path of this portable terminal:
-Indication message generating apparatus is used for generating the Report mode Indication message;
-Indication message dispensing device is used for sending described Report mode Indication message to described portable terminal;
-report acquisition device is used for obtaining communication quality report parameter and Report mode information from described portable terminal;
-processing unit is used for according to described communication quality report parameter and described Report mode information, carries out respective handling, and described processing unit also is used for:
If the indicated Report mode of the indicated Report mode of-the described Report mode information of obtaining and described Report mode Indication message is different, described respective handling comprises each:
Again send described Report mode Indication message to described portable terminal, indicate it to carry out the switching of Report mode;
Continuation is according to the indicated Report mode of described communication quality report parameter and the Report mode information obtained, and to carry out downlink communication adaptive for it;
Wherein, described Report mode information shows common carrier wave and the report of interference plus noise ratio, or difference carrier or the report of interference plus noise ratio.
31. device according to claim 30 is characterized in that, described report acquisition device comprises:
-report message receiving system is used for receiving the communication quality report message from described portable terminal, wherein, comprises communication quality report parameter and Report mode information in the described communication quality report message;
-extraction element is used for extracting described communication quality report parameter and described Report mode information from described communication quality report message.
32. device according to claim 30 is characterized in that, this device also comprises:
-handover request receiving system is used for receiving the Report mode handover request message from portable terminal;
Described Indication message generating apparatus also is used for:
-according to described pattern handover request message, generate described Report mode Indication message.
33. each described device in 32 according to claim 30 is characterized in that described processing unit also is used for:
If the indicated Report mode of the indicated Report mode of-the described Report mode information of obtaining and described Report mode Indication message is identical, described respective handling comprises: according to described communication quality report parameter, to carry out downlink communication adaptive for described portable terminal.
34. each described device in 32 is characterized in that described communication quality comprises the carrier wave and interference plus noise ratio of downlink communication according to claim 30.
35. each described device in 32 is characterized in that described opposite equip. comprises base station and relay station according to claim 30.
36. each described device in 32 is characterized in that described cordless communication network comprises the WiMAX network according to claim 30.
37. the portable terminal in the cordless communication network is characterized in that, comprises according to claim 19 each described device in 29.
38. the base station in the cordless communication network is characterized in that, comprises according to claim 30 each described device in 36.
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| PCT/CN2008/001315 WO2010006463A1 (en) | 2008-07-15 | 2008-07-15 | Method and device for a mobile terminal in a wireless network to report the communication quality |
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| CN1701621A (en) * | 2003-04-30 | 2005-11-23 | 三星电子株式会社 | Method for measuring and reporting channel quality in a broadband wireless access communication system |
| CN1930801A (en) * | 2004-03-12 | 2007-03-14 | 三星电子株式会社 | Method and apparatus for transmitting/receiver channel quality information in a communication system using an orthogonal frequency division multiplexing |
| CN101180820A (en) * | 2005-04-01 | 2008-05-14 | 高通股份有限公司 | Systems and methods for control channel signaling |
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| KR20070027844A (en) * | 2005-08-29 | 2007-03-12 | 삼성전자주식회사 | Method and apparatus for transmitting channel quality information in a wireless communication system |
| EP1863209A1 (en) * | 2006-06-02 | 2007-12-05 | Alcatel Lucent | Channel quality reporting in an orthogonal frequency division multiplexing system |
| CN101155401A (en) * | 2006-09-30 | 2008-04-02 | 北京三星通信技术研究有限公司 | Device and method for commuting CQI transmission mode |
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| CN1701621A (en) * | 2003-04-30 | 2005-11-23 | 三星电子株式会社 | Method for measuring and reporting channel quality in a broadband wireless access communication system |
| CN1930801A (en) * | 2004-03-12 | 2007-03-14 | 三星电子株式会社 | Method and apparatus for transmitting/receiver channel quality information in a communication system using an orthogonal frequency division multiplexing |
| CN101180820A (en) * | 2005-04-01 | 2008-05-14 | 高通股份有限公司 | Systems and methods for control channel signaling |
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