CN101326745B - Methods and apparatus for implementing and using an in-band rate indicator - Google Patents

Methods and apparatus for implementing and using an in-band rate indicator Download PDF

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Publication number
CN101326745B
CN101326745B CN200680034199.3A CN200680034199A CN101326745B CN 101326745 B CN101326745 B CN 101326745B CN 200680034199 A CN200680034199 A CN 200680034199A CN 101326745 B CN101326745 B CN 101326745B
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data rate
information
encoded
rate option
traffic channel
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CN101326745A (en
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拉吉夫·拉罗亚
金辉
厉隽怿
弗兰克·A·莱恩
汤姆·理查森
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Qualcomm Inc
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Qualcomm Inc
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Abstract

Downlink traffic channel data rate options and methods of indicating to a wireless terminal a utilized downlink data rate option are described. The downlink traffic channel rate option for a segment is conveyed using an assignment signal and/or a block in the downlink traffic channel segment which is not used for user data. Downlink segment assignment signals in some implementations allocate fewer bits for rate option indication than are required to uniquely identify each option. In some implementations low rate options, e.g., using QPSK, are uniquely identified via assignment signals. Higher rate options, e.g., using QAM16 modulation, are conveyed via the distinct information block in the downlink traffic segment using a first coding/modulation method. Still higher rate options, e.g., using QAM16, QAM64, or QAM256, are conveyed via the information block in the segment using a second coding/modulation method which is applied to the rate option information.

Description

Be used for implementing and using the method and apparatus of rate indicator in band
Technical field
The present invention relates to be used to indicate the method and apparatus of data rate option information, simultaneously various exemplary embodiment more particularly are intended to indicate and use the downlink data rate option information in wireless communication system.
Background technology
For effectively carrying out the downlink traffic channel signaling in wireless communication system, wherein communicate by letter with a plurality of wireless terminals that are located at the diverse location place that has different channels condition and disturbance grade arbitrary preset time in the base station, supports that the mass data rate options of downlink traffic channel section is useful.Usually, in the wireless communication system of supporting the downlink traffic channel data rate options that a plurality of sections district by district change, the data rate option of given section is unique identification in corresponding to the appointment signal field of downlink traffic channel section.Yet, increase with the data rate number of options of supporting, being exclusively used in to assign in signal increases with the desired bits number of rate options that unique indication is assigned, and represents that non-needs of expense increases.
Considering above discussion, will be useful if allow new method and apparatus with the amount of overhead of supporting a large amount of downlink traffic channel data rate options and restriction to be used for the transmission data-rate information.Flexibly and promote that in order to the different coding of the data rate option that transmits the downlink traffic channel section and/or the method and apparatus of modulation technique will be useful.
Summary of the invention
The present invention relates to be used to indicate the method and apparatus of data rate option information.The whole bag of tricks and equipment are intended to be used to indicate and use the method and apparatus of the downlink data rate option information in wireless communication system.
Some embodiment of the present invention and feature are intended to base station methods and equipment.Feature of the present invention and embodiment comprise the subject matter of unsettled claim.Other features of the present invention, embodiment and benefit also will be discussed in the application's case.
A specific example embodiment is intended to operate the method for base station, and it is included in transmission encoded data rate options information in the first of the first communication section, and in the second portion of described the first communication section the encoded user data of transmission.Need not to be at some in all embodiment, the step of transmission encoded data rate options information comprises with the first modulator approach modulates described encoded data rate options information, and wherein the first modulator approach is different from be used to the modulator approach of modulating described encoded user data.described method can further be included in described first and second part of described the first communication section of transmission and select the data rate option before, described data rate option is corresponding to the one in a plurality of different pieces of information rate options groupings, each of described different pieces of information rate packet is corresponding to the coding method of different pieces of information rate options designator, in described a plurality of grouping first grouping is corresponding to the first data rate option indicator coding method, wherein with the selected data rate option of appointment signal indicating of the segments apart of communicating by letter, in described a plurality of grouping second grouping is corresponding to the second data rate option indicator coding method, wherein the data rate option is contained in described communication section, select to be used for the described data rate option of described the first communication section in described the second grouping.
Need not to be at some in whole embodiment, the first unique identification selection of data rate option indicator method is for the user data coded data rate options of the section of communicating by letter.In some this type of embodiment, wherein the first unique identification selection of data rate option indicator is used for user data coded data rate options, is used for having a mind to select the communication section of option not comprise encoded data rate options information.At least realizing this purpose in some embodiment, because the data rate option information that provides is enough to allow decoding and the recovery of user data outside the first section.The base station can be identified for the coding method of described encoded data rate options information based on data rate option to be transmitted, for example, wherein a kind of method is used for some data rate, and another kind of method is used for different data rate options.
Other steps and/or feature can be contained in various embodiment of the present invention.The equipment that is used for each method of enforcement the present invention also is described hereinafter, and within the scope of the invention.
Now with brief discussion according to some various exemplary embodiment and feature of using in needing not to be all systems of the invention process.
Combination between information during some embodiment assigns signal and/or appointment signal and is contained in the section of communicating by letter of assigning by use comes indicating downlink link data rate options information.The indicated speed option information of hereinafter discussing in the down link section, the method that roughly is discussed in simultaneously in the context that uses down link appointment signal can be used separately, for example needn't use the information of assigning in signal or appointment signal.Perhaps, in the situation as most examples, the method that comprises rate options information in the down link section can assign the feature of signal to use in conjunction with the down link that relates to of the present invention.
Of the present invention some but in needing not to be whole embodiment, the different downlink data rate option in the downlink traffic channel section, for example 10 or more are supported to can be used in a large number in the base station.Compare with the higher data rate option, than the low rate option corresponding to lower data speed.At least the code rate that some use of described different pieces of information speed is different and/or different modulation schemes are used for the user data that coded/modulated is contained in the down link section of using described rate options.In certain embodiments, lower data rate option (for example data rate option 0,1 and 2) uses the QPSK modulation, and higher data rate option (for example data rate option 3-10) uses QAM16, QAM64 or QAM256 modulation.
In various embodiments, the base station is by assigning the downlink traffic channel section with the appointment signal.According to described embodiment, each appointment signal can be corresponding to one or more sections of assigning.Therefore, assign signal for each, have at least one corresponding downlink channel section.In certain embodiments, the base station can determine (for example) when make the down link section assign, when coding data rate option to be used, with the user data modulation and/or be mapped to the section of assigning.Can support according to the present invention the various distinct methods of the data rate option that uses to wireless terminal or the indication of wireless terminal group.In certain embodiments, determine the method for the data rate option that indication utilizes based on selected data rate options to be used.
According to a feature of supporting in certain embodiments of the present invention, compare with the number of each possible downlink data rate option of being supported by the base station of downlink traffic channel section of unique identification position to be asked, assign signal will be still less to be exclusively used in the rate options information that represents.In some this type of embodiment, for some low data rate option at least, be encoded to the data rate option that section is assigned the corresponding downlink traffic channel section of the described appointment signal of the unique identification in appointment signal rate option information position in signal.For other data rate options, higher data rate option for example, the data rate option that is contained in the appointment signal rate option information position indicating downlink link traffic channel section of assigning in signal will be contained in the specific information piece, for example be contained in predetermined group of transmission unit in the down link section of assigning.Normally, the specific information piece does not comprise user data, but can be including (for example) various control informations and data rate option information.Transmission unit in described specific information piece can be the transmission unit of adjacent groups, for example is positioned at the key signature that the down link section begins to locate, and maybe can be distributed in the down link section by contiguous but known mode.
In some specific embodiment, the described specific information piece that comprises the downlink traffic channel section of specific information piece can have a plurality of forms, and each form is corresponding to a code group group.For example, the first form can be mapped as 5 information bits that comprise 1 rate options designator bit 32 encoded positions, and wherein the pattern of right each in 16 positions of encoded position can be 00 or 11; The second form can be mapped as 8 information bits that comprise 3 rate options designator bit 32 encoded positions, and wherein the pattern of right each in 16 positions of encoded position can be 01 or 10.In some this type of embodiment, the encoded position of specific information piece is mapped to the QPSK modulation symbol.
in certain embodiments, there is the grade grouping of three downlink traffic channel user data/information data rate options: (i) the first lowest packet, wherein the specific information piece is not implemented in the downlink traffic channel section, and unique designation data rate options in assigning signal wherein, (ii) the second intermediate grade grouping, wherein use the specific information piece, wherein the information bit with the first number is encoded in the specific information piece, and wherein the specific information piece comprises through the information bit of indication with two data rate options of unique identification, (iii) high-grade grouping depth of the night, wherein use the specific information piece, wherein the information bit with the second number is encoded in the specific information piece, described the second number is greater than described the first number, and wherein said specific information piece comprises 3 information bits that are exclusively used at least 6 data rate options of unique identification.In some this embodiment, for the first grouping, the downlink traffic channel section uses the QPSK modulation; For the second grouping, the downlink traffic channel section is that the specific information piece partly uses QPSK, and uses QAM16 for encoded part of user data; For the 3rd grouping, the downlink traffic channel section is that the specific information piece partly uses the QPSK modulation, and is that encoded part of user data used the one in QAM16, QAM64 and QAM256.
The feature of each embodiment according to the present invention, base station are not specifically identified the Format Type of specific information piece, but the code grouping allows wireless terminal to receive the specific information piece to distinguish and to identify the Format Type of the specific information piece that is received.In certain embodiments, wireless terminal is after determining the Format Type of specific information piece, to attempt recovering one or more information bits of specific information piece, wherein said specific information piece identification is used for the data rate option of downlink traffic channel section.By using the data rate option value of recovering, correctly decipher of wireless terminal is corresponding to the modulation symbol values that receives of encoded user data, and trial recovers the user data information position by base station coding before transmission.
Although discussed various embodiment in the foregoing invention content, should be appreciated that, may not all comprise identical feature by all embodiment, and some feature mentioned above and nonessential but may need in certain embodiments.In ensuing detailed description, discuss a large amount of other features of the present invention, embodiment and benefit.
Description of drawings
Fig. 1 is the diagram of the exemplary communication system implemented according to the present invention and with method of the present invention.
Fig. 2 is the diagram of the example base station implemented according to the present invention and with method of the present invention.
Fig. 3 is the diagram of the exemplary wireless terminal implemented according to the present invention and with method of the present invention.
Fig. 4 is the form of graphic extension embodiment according to the present invention downlink traffic channel rate options information.
Fig. 5 comprises the form that the embodiment according to the present invention downlink traffic channel is assigned signaling information.
Fig. 6,6A, 7 and 8 show embodiment according to the present invention downlink traffic channel section.
Fig. 9 is the form of describing according to the specific information block message of downlink traffic channel section rate options information of the present invention and correspondence.
Figure 10 is the form of the exemplary specific information piece in exemplary the first format description downlink traffic channel section used according to the invention.
Figure 11 is the form of the exemplary specific information piece in exemplary the second format description downlink traffic channel section used according to the invention.
The information of Figure 12 comprises that exemplary specific information piece, identification be associated with exemplary the first form first code group, and identification have the information of the second code group of exemplary the second form.
Figure 13 is mapping and encoded mapping to modulation symbol of exemplary that the exemplary information bit of the specific information piece of exemplary the first form graphic extension downlink traffic channel section used according to the invention is processed encoded position.
Figure 14 is that the mapping that encoded position is processed of the exemplary information bit of the specific information piece of exemplary the second form graphic extension downlink traffic channel section used according to the invention and exemplary encoded position are to the mapping of modulation symbol in conjunction with 15.
Figure 16 graphic extension is according to the exemplary downlink traffic channel section of each embodiment of the present invention and the series connection of modulation symbol.
Figure 17 is the flow chart that operates the exemplary methods of base station according to the present invention.
Figure 18 is the flow chart of the exemplary methods of operate wireless terminating machine according to the present invention.
Embodiment
Fig. 1 is the diagram of the exemplary communication system 100 implemented according to the present invention and with the inventive method.System 100 comprises the Apparatus and method for that is intended to following method improvement downlink communication: support a plurality of options of different downlink data rate option, and send the selected downlink data rate of fixing line link Traffic Channel section to effective means according to the present invention.Example system 100 can be (for example) Orthodoxy Frequency Division Multiplex (OFDM) multi-address radio communication system.System 100 comprises a plurality of residential quarters (residential quarter 1 102, residential quarter M 104).Each residential quarter (residential quarter 1 102, residential quarter M 104) represents respectively the wireless coverage area of respective base station (BS 1 106, BS M 108).Comprise a plurality of wireless terminals (WT) (WT 1 110, WT N 112, WT 1 ' 114, WT N ' 116) in system 100.Described WT some is mobile node (MN) at least; MN can run through system 100 and move, and the Radio Link of foundation and different B S, and described BS is corresponding to the current residential quarter of locating of WT wherein.In Fig. 1, (WT 1 110, WT N 112) is coupled to BS 1 106 via Radio Link (118,120) respectively; (WT 1 ' 114, WT N ' 116) is coupled to BS M 108 via Radio Link (122,124) respectively.
BS (106,108) is coupled to network node 126 via network link (128,130) respectively.Network node 126 is coupled to other network nodes via network link 132, such as router, other base stations, aaa server node, family expenses agent node etc. and/or internet.Network link 128,130,132 can be (for example) optical fiber link.Network node 126 and network link 128,130, the 132nd link together and provide connective with the various BS in different districts in order to be positioned at the part of the backhaul network that the WT of a residential quarter can communicate by letter with the peer node of different districts.
System 100 is shown as has the wherein residential quarter of a sector, every residential quarter.Method and apparatus of the present invention also applicable to have every residential quarter more than a sector (for example, every residential quarter 2,3 or more than 3 sectors) system, and have the system of the different number of sectors in every residential quarter in the different piece of system.In addition, method and apparatus of the present invention also is applicable to many non-cellular radio communication systems that comprise at least one base station and a wireless terminal.
Fig. 2 is the diagram of the example base station 200 implemented according to the present invention and with the inventive method.Exemplary BS 200 is sometimes referred to as access node.BS 200 can be any one of BS (106,108) of the system 100 of Fig. 1.Example base station 200 comprises receiver 202, transmitter 204, processor 206, I/O interface 208 and the memory 210 that is coupled via bus 212, and described different elements can pass through bus 212 interchange of data and information.
Receiver 202 is coupled to reception antenna 203, and wherein BS 200 can be by reception antenna 203 from a plurality of wireless terminal receiving uplink signals.Receiver 202 comprises the decoder 214 for the encoded uplink signal decoding that will receive.
Transmitter 204 is coupled to transmitting antenna 205, wherein by transmitting antenna, down link signal is sent to a plurality of wireless terminals.Transmitter 204 comprise for before transmission with the encoder 216 of information coding.Down link signal comprises the appointment signal, assigns signal to comprise the appointment of downlink traffic channel section.Described appointment signal comprises rate options information.Down link signal also comprises downlink traffic channel section signal.Some downlink traffic channel section comprises the specific information piece, and described specific information piece comprises the rate options information corresponding to the data rate of the user data that is used for the downlink traffic channel section.
I/O interface 208 is coupled to other network nodes with BS 200, for example router, other base stations, aaa server node, family expenses agent node and/or internet.I/O interface 208 provides in order to the interface of interconnectivity to be provided between the node in different districts to backhaul network.
Memory 210 comprises routine 218 and data/information 220.Processor 206 (for example CPU) executive routine 218, and operate BS 200 and implement method of the present invention with the data/information 220 in memory 210.
Routine 218 comprises Communications routines 222 and base station control routine 224.The various communication protocols that Communications routines 222 is implemented by BS 200 uses.
Base station control routine 224 is controlled the operation of BS 200, comprises the embodiment that receiver 202 operates, transmitter 204 operates, I/O interface 208 operates, reaches the inventive method.Base station control routine 224 comprises scheduler module 226, downlink traffic channel section rate options determination module 228, appointment signal rate option coding module 230, downlink traffic channel section coded/modulated module 232, downlink signaling module 238, reaches uplink signalling module 240.Downlink traffic channel section coded/modulated module 232 comprise user data coding/mapping block 238 and comprise the specific information piece of rate options information, coding/mapping block 240 specific information piece modules 240 comprise the first format module 242 and the second format module 244.
Scheduler module 226 (for example scheduler) is to wireless terminal user scheduling uplink and downlink channel air link resources, for example section.Scheduler 226 operation comprises according to scheduling strategy the downlink traffic channel section is assigned to particular wireless station machine in a plurality of wireless terminals.Different downlink traffic channel sections can have different qualities, for example have more multi-tone for the shorter duration or for having still less tone than long duration, and scheduler can be considered these differences when determining which downlink traffic channel should to be assigned to which user.Scheduler 226 can be considered based on data volume assessment, priority level, subscriber's layer grade, the time-delay of the WT of giving to be transmitted, assessment (for example using the channel condition feedback report) and/or the level of interference of channel condition (are for example assessed, use is from the feedback information of WT, for example beacon rate reports information) and distribute to wireless terminal at a time a plurality of downlink traffic channel sections of naming a person for a particular job.Each tone transmits signal during being used in the OFDM symbol transmission time periods.
Downlink traffic channel section rate options determination module 228 (for example) determine to be ready to use in the rate options of downlink traffic channel section in phase with scheduling operation from a plurality of data rate options that the base station of down link is supported, wherein each data rate option is corresponding to a code rate and modulation scheme.For example, example system can be supported 11 different pieces of information rate options in down link, and each is all corresponding to the information bit of varying number to be encoded in the mac frame of varying number, downlink traffic channel section, and specific modulation planisphere; Different modulating planisphere (for example QPSK, QAM16, QAM64, QAM256) is used for transmitting the encoded position of the user data of some different rates option at least.For example, three minimum data rate options can be used QPSK, next four data rate options the highest can use QAM16, and next two data rate options the highest can use QAM64, and next two data rate options the highest can use QAM256.Except the data rate option of determining the downlink traffic channel section, module 228 is controlled based on determined speed the control of other modules is flowed.For example, in certain embodiments, for low data rate option, for example use the rate options 0,1 and 2 of QPSK, and never call specific information piece module, because do not implement described specific information piece.
Assign signal rate option coding module 230 with downlink traffic channel rate options information coding in the appointment signal corresponding to the downlink traffic channel section.for some rate options (for example, use the rate options 0 of QPSK, 1 or 2), the rate options of reality is encoded in the appointment signal, and to some other rate options (for example rate options 3-10), will be such as information codings such as bit patterns (such as 11) to being in appointment signal in the specified field of rate information, wherein the actual rate options of assigning of rate information indication will be transmitted in the specific information piece, a part and rate options that described specific information piece is the downlink traffic channel section will be in specified scopes, for example in rate options 3-10.
Downlink traffic channel section coded/modulated module 232 is carried out coding and the modulation operations of downlink traffic channel section.User data coding and mapping block 238 are encoded to the user data information position in encoded position according to code rate and corresponding to the code of the downlink traffic channel data rate option of determining for described section.User data and mapping block 238 are also according to corresponding to the modulation constellation for downlink traffic channel section established data rate options, encoded position being mapped to modulation symbol values.User data coding/mapping block 238 also makes modulation symbol values be associated with the key signature of section.In certain embodiments, for low data rate option, for example use the data rate option 0,1,2 of QPSK, for each key signature of section distributes modulation symbol corresponding to encoded user data, and to the higher data rate option, for most key signatures (for example, 656/672) of section distribute modulation symbol values corresponding to encoded user data, and be that a small amount of key signature (for example, 16/672) distributes the modulation symbol corresponding to the specific information piece.
Comprise the specific information piece execution of rate options information, coding/mapping block 240 about coding, mapping and the modulation operations of the specific information piece of downlink traffic channel section.Specific module 240 supported two different operational formats, and comprises the first format module 242 and the second format module.Coding, mapping and modulation operations that the first format module 242 is carried out about first group (for example rate options 3-4) of data rate option, and coding, mapping and modulation operations that the second format module 244 is carried out about second group (for example rate options 5-10) of data rate option, the data rate of the second group is higher than the data rate of the first group.For example, the first format module 242 can be encoded to one group of 5 information bit that comprises a data speed position in one group of 32 information bit; Can use the code based on Reed-Muller, and the encoded hyte that produces can be 16 two right, wherein each is to all having value 00 or 11.The value of a described data speed position can be used for the user data part whether assigned rate option 3 or 4 is used for the downlink traffic channel section.Continue described example, the second format module 244 can be encoded to one group of 8 information bit that comprises 3 data speed positions in one group of 32 information bit; Can also use the code based on Reed-Muller, and the encoded hyte that produces can be 16 two right, wherein each is to all having value 01 or 10.The value of described three data speed positions can be used for (for example) and comes assigned rate option 5,6,7,8,9 or 10 whether to be used for the user data part of downlink traffic channel section by two possibilities that just are being retained (for example, further strengthening and/or add other speed). Module 242 or 244 is mapped to the encoded position that produces the modulation symbol values of QPSK modulation constellation, for example described group 32 encoded positions is mapped to 16 modulation symbol values of described section.Module 42 or 244 also makes modulation symbol values be associated with the key signature of the specific information piece of downlink traffic channel section.
a feature according to some embodiment of the present invention, the code rate of the first format module 242 (for example, an encoded position, 3 information bit-32) lower than the code rate of the second format module 244 (for example, an encoded position, 5 information bit-32), and the data rate of the user profile that is associated with the use of the first format module 242 (for example, the data rate of the user profile that the data rate option 3 or 4 corresponding to 848-1056 information bit) is associated lower than the use with the second format module 244 (for example, data rate option 5-10 corresponding to 1264-3760 information bit).According to another feature of some embodiment of the present invention, the first format module 242 produces one group of modulation symbol values, and described group of modulation symbol values separated with the described group of modulation symbol values that is produced by the second format module.For example, the first format module 242 can produce one group of 16 QPSK modulation symbol values with the first two of four described in one group four possible QPSK modulation symbol values when carrying out, and described the first two value represents two quadrants that the diagonal angle is put mutually in complex plane.Equally, the second format module 244 can use when carrying out latter two (, the QPSK clump described four may the QPSK modulation symbol values two of residues) produce one group of 16 QPSK modulation symbol values.
Downlink signaling module 238 control transmitter 204 and the operation of encoder 204 comprise down link signal, the pilot signal of beacon signal, the downlink communication section assignment information signal that comprises the data rate option information and downlink traffic channel section signal with transmission, described downlink traffic channel section some comprises the specific information piece at least, described specific information piece comprises the rate options for the user profile of downlink traffic channel section.
Downlink signaling module 240 is controlled the operation of receiver 202 and decoder 214 thereof to receive and to process the uplink signal that comprises resource request, channel quality reporting, jamming report and uplink traffic channel signals from a plurality of WT.
Data/information 220 comprises many group WT data/information 246 (WT 1 data/information 250, WT N data message 252) and system data/information 248.WT 1 data/information 250 comprises the zone field 259 of user data 253, WT identifying information 254, device/session/resource information 255, downlink user data amount 256, channel quality information 257, dl interference estimated information 258 and downlink allocation.
User data 250 including (for example) the data/information that represents speech, text or video, receive and be intended to be forwarded to the user data/information of WT 1 peer node being in communication session with WT 1 from WT 1 on the uplink traffic channel section.User data 250 can also comprise the peer node that is derived from WT 1 and be sent to the user data/information of WT 1 via downlink traffic channel section signal.
WT identifying information 254 is including (for example) being assigned existing base station with user identifier and the IP address that is associated with WT 1.Device/session/resource information 254 comprises up link and down link section, for example distributed to the Traffic Channel section of WT 1 by scheduler module 226, and comprise the session information of address and about being in the routing iinformation of WT 1 peer node of communication session with WT 1.
Channel quality information 257 comprises from from the information that obtains institute's receive channel quality report of WT 1 or derive, and from from the channel quality information of determining the measurement of the uplink signal of WT 1 and assessment.Dl interference estimated information 258 comprises the base station of potential interference grade to be estimated, expection is by producing according to transmitting to WT 1 on (for example) downlink traffic channel section corresponding to the expected transmit powers grade of the potential rate options of difference and/or determined rate options.
The amount of downlink user data 256 is to use the current information that can use BS 200 that the BS 200 that the current downlink transmission of WT1 needs is measured.The amount of downlink user data 256 can use to determine the downlink traffic channel section number to WT1 to be allocated by scheduler module 226.
(for example) according to current appointment to WT1, the zone field 259 that down link is assigned can comprise the zone field (section 1 information 260, section N information 261) of one or more groups.The rate options 263 that section 1 information 260 comprises section identifier 262, assign, assign signal message 264, user data 266, encoded user data 267, modulation symbol values 268, and comprise specific block message 269 for some according to the section of the rate options 263 of assigning.
The described downlink traffic channel section of identification in a plurality of downlink traffic channel sections of section identifier 262 (for example, Sector Index numbering) from the down link timing architecture.The rate options of distributing is institute's specified data rate options of being determined for described downlink traffic channel section by module 228.Assign signal message 264 to comprise encoded rate information 265.Encoded rate information 265 comprise specify actual speed 2633 of assigning or identification will use the specific information piece in the downlink traffic channel section information (for example, two positions), described specific information piece comprises the information of the rate options 263 that identification assigns.User data 266 comprises user information bit, for corresponding to the downlink traffic channel section of code rate with corresponding to the code of the rate options 263 of assigning, described user information bit being encoded in encoded user data 267.Modulation symbol values 268 comprises by corresponding to the rate options of assigning, encoded user bit 267 being mapped to and is used for the modulation symbol values that produces on the downlink traffic channel section, for example, described modulation constellation is the one in QPSK, QAM 16, QAM64, QAM256.Whether the number of the modulation symbol values 268 of downlink traffic channel section can be according to comprising the specific information piece and change.
Specific information block message 269 inclusion information positions 270, information bit 270 comprises rate options information 271, bits of coded 272 and modulation symbol values 273.For example, if section is corresponding to arbitrary higher group of rate options, can use specific information block message 269, be for example the data rate option 3-10 that encoded user data uses QAM16, QAM64 or QAM256 modulation constellation, can for ignoring piece 269 than the low rate option, be for example the data rate option 0-2 that encoded user data uses the QPSK modulation constellation simultaneously.The input of information bit 270 representatives to the specific information piece is for example 5 information bits when using the first form, or is 8 information bits when using the second form.Information bit 270 comprises rate options information bit 271, for example carry out 1 position of appointment with the first form between two possible rate options (for example rate options 3 or 4), or 3 positions of carrying out appointment between 6 possible rate options (for example rate options 5,6,7,8,9,10) keep wherein and will carry out with the second form two other rate options of appointment.In rate options information 271, the speed of appointment is corresponding to the rate options 263 of assigning.Encoded position 272 is that (for example) uses code and code rate corresponding to one group of information bit 270 encoded position, for example 32 encoded positions according to the rate options of assigning.Determine encoded position 272 according to the first or second Format Type with two different coding methods, each Format Type is corresponding to a code group group.The QPSK value of symbol that modulation symbol values 273 representative is produced by the mapping of encoded position 272, for example 16 QPSK values of symbol.According to the feature of each embodiment of the present invention, for given downlink traffic channel section, modulation symbol values 273 is taken out two values from described group of four probable values, and described two values represent the quadrant that in complex plane, the diagonal angle is put mutually or the position of putting mutually.
System data/information 248 comprises uplink/downlink regularly and frequency structure information 274, downlink traffic channel are assigned signaling information 275, downlink traffic channel rate options/coded/modulated information 276 and specific block message 277.
uplink/downlink timing and frequency structure information 274 are including (for example) symbol timing information, the tone pitch information, the uplink tone number, the downlink tone number, uplink carrier frequency, downlink carrier frequency, uplink bandwidth, downlink bandwidth, the uplink tone group, downlink tone set, up link is jumped tone information, up link is suspended information, down link is jumped tone information, downlink traffic section structure information, uplink service section structure information, repeatability timing architecture (symbol time interval and the symbol time interval is grouped into (for example) suspends for example, half time slot, time slot, super time slot, the beacon time slot, overtime groove etc.), assign the relation between signal and downlink traffic channel section.Downlink traffic channel section structure information comprises identification air link resources (for example key signature) is grouped into the information in section, with identification, the air link resources of section further is grouped into information in sub-segments, for example at the downlink traffic channel section during corresponding to the one in the data rate option that uses the specific information piece, which key signature which key signature of identification downlink traffic channel section is used for specific information piece and same downlink traffic channel section is used for the information of encoded user data block.
Downlink traffic channel assigns signaling information 275 to comprise the information that the significance bit of each interior field of signal and the different probable values in described field is assigned in identification, for example about assigning the information of the downlink traffic channel section rate options son field in signal.for example, assign in signal and can transmit three possible inferior grade rate options corresponding to 2 bit rate option subfields of downlink traffic channel section, for example as bit pattern (00, 01 or 10) indicated rate options 0, 1, 2, maybe can transmit the rate options of having used a higher level, and will transmit actual speed of assigning as the part of downlink traffic channel section in the specific information piece, for example bit pattern (11) can transmit the one of having used in rate options (3-10), and actual speed rate is contained in the specific information piece of downlink traffic channel section.
Downlink traffic channel rate options/coded/modulated information 276 comprises identification by the information of each downlink traffic channel data rate option of base station support, the number of mac frame is corresponding to each data rate option, the number of information bit is corresponding to each data rate option, code word size and the code that uses are corresponding to each data rate option, and the modulation constellation of using is corresponding to each data rate option.
Specific information block message 277 comprises the first formatted data/information 278 and the second formatted data/information 279.The information that the decipher that the first formatted data/information 278 comprises the position size of information bit field, each field of the first form, the first form specific information piece of identification which downlink traffic channel data rate option and specific information piece, provide the place value in each field, coding method use etc. are associated is such as comprising code generation matrix, information being mapped to the bits of coded of modulation symbol, the modulation scheme of using etc.For example, the first form may be associated with two downlink traffic channel rate options 3 and 4; The first form specific information piece may transmit 5 information bits that comprise single bit rate option indicator and 4 through-put power indicator value, described single bit rate option indicator indicated speed option 3 or 4, described coding can and can cause based on the Reed-Muller code 32 encoded positions are mapped to 16 QPSK modulation symbol values.
The information that the second formatted data/information 279 comprises that the position of information bit field, each field of the second form, the second form specific information piece of identification which downlink traffic channel data rate option and specific information piece is big or small, decipher that the place value in each field is provided, coding method use etc. are associated, for example, comprising code produces matrix, information is mapped to the bits of coded of modulation symbol, the modulation scheme of using etc.For example, the second form may be associated with 6 downlink traffic channel rate options 5-10 with two reservation flag; The second form specific information piece may transmit 8 information bits that comprise 3 bit rate option indicator and 5 through-put power indicator value, which rate options wherein said 3 bit rate option indicator indications have assigned from the scope of rate options 5-10, described coding can be based on the Reed-Muller code, and can cause 32 encoded positions are mapped to 16 QPSK modulation symbol values.First and second formatted data/information 278,279 can be separately be associated from different code group, (for example) in order to be different from modulation symbol values corresponding to the second form specific information piece corresponding to the possible QPSK modulation symbol values of the first form specific information piece, for example be in the different quadrants in complex plane.
Fig. 3 is according to the present invention and uses the diagram of the exemplary wireless terminal 300 of method enforcement of the present invention.WT 300 can be any one in the WT (100,112,114,116) of the system 100 of Fig. 1.Exemplary WT 300 comprises receiver 302, transmitter 304, processor 306, user I/O device 308 and the memory 310 that is coupled via bus 312, and various elements can pass through bus 312 interchange of data and information.
Receiver 302 is coupled to reception antenna 303, and WT 300 receives from BS 200 by reception antenna 303 and comprises the appointment of downlink traffic channel section and the down link signal of downlink traffic channel section signal.Receiver 302 comprises decoder 314, and it is by the down link signal decoding of WT 300 in order to receiving from BS 200.
Transmitter 304 is coupled to transmitting antenna 305, and WT 300 is transmitted into BS 200 by the uplink signal that transmitting antenna 305 will comprise channel quality reporting, jamming report, uplink resource request message and uplink traffic channel section signal.In certain embodiments, use the same antenna as transmitting antenna 305 and reception antenna 303.Transmitter 204 comprises the encoder 316 of uplink data/information being encoded for before transmission.
User I/O device 308 is including (for example) microphone, loud speaker, keypad, keyboard, mouse, touch-screen, camera, display, alarm, vibrating device etc.Various user I/O devices 308 are used for the input plan for the user data/information of the peer node of WT 300, and output is from the data/information of the peer node reception of WT 300.In addition, user I/O device 308 by the operator of WT 300 in order to initial various functions, such as switch on, cut off the power supply, call out, end call etc.
Memory 310 comprises routine 318 and data/information 320.(for example, CPU) executive routine 318, and control the operation of WT 300 and implement method of the present invention with the data/information 320 in memory 310 for processor 306.
Routine 318 comprises Communications routines 322 and wireless terminal control routine 324.The various communication protocols that Communications routines 322 is implemented by WT 300 uses.Wireless terminal control routine 324 is controlled the operation of WT 300, comprises the operation of receiver 302, transmitter 304 and user I/O device 308.Wireless terminal control routine 324 comprises assigns signaling module 326, downlink communication channel information to recover module 328, downlink signaling module 330 and uplink signalling module 332.
Assign signaling module 326 to process the appointment signal that receives: identification is assigned to the section identifying information of the downlink communication channel section of assigning of WT 300, and recovery is contained in the rate information of assigning in signal, the specific data rate of assigning of the downlink communication channel section of for example assigning, or the special speed that recovers the described downlink communication channel section of indication will be contained in the information in the specific information piece of downlink communication channel section.Assign signaling module 326 to comprise and assign decoder module 327 and assign type determination module 329.Assign decoder module 325 with the appointment signal decoding that receives.Assigning type determination module 329 to determine to assign is the first kind, and its indication is assigned by the appointment signal corresponding to the data rate option of downlink channel section; Or described appointment refers to the Second Type of the number of distributing letters, it comprises designator, and the indication of described designator comprises indication by the section of assigning signal to assign, and to be contained in the data rate option that the user data in described section uses be the information of being assigned by described appointment signal.Downlink traffic channel information is recovered module 334 and is comprised specific information piece module 334 and user data module.Specific information piece module 334 executable operations recover to be contained in to control the information that comprises in the specific information piece of the downlink traffic channel section that is assigned to WT 300.Specific information piece module 338 comprises Format Type determination module 338, the first format module 340 and the second format module 342.Format Type determination module 338 is determined with the encode information bit of specific information piece of the downlink traffic channel section that receives of which kind of Format Type.The first format module 340 is through the information bit of operation to recover to be transmitted by the encoded information bit of described specific information piece when determining that the specific information piece uses the first Format Type.The second format module 342 is through the information bit of operation to recover to be transmitted by the encoded information bit of described specific information piece when determining that the specific information piece uses the second Format Type.For example, the first Format Type module 340 can be when called be used for recovering to comprise 5 information bits of 1 rate options position from 16 QPSK modulation symbol values, described 1 rate options is the special speed option in two rate options of indication, and for example the downlink traffic channel data rate option of downlink traffic channel is rate options 3 or rate options 4; And the second format module 342 can be when called be used for recovering to comprise 8 information bits of 3 rate options positions from 16 QPSK modulation symbol values, the indication of described 3 rate options positions is from 8 or which the particular downlink Traffic Channel rate options in a rate options still less, and for example whether the downlink traffic channel rate options of downlink traffic channel section is rate options 5,6,7,8,9 or 10.
User data module 336 through operation with from downlink traffic channel section restoring user data information bit.Determined data rate option can be used for affecting the operation of user data information recovery operation, for example controls the operation of decoder 314.For example, some data rate option (for example using the data rate option 0,1,2 of QPSK) may not use the specific information piece, and other data rate options (for example using the data rate option 3-10 of QAM16, QAM64 or QAM256) can use the specific information piece.In some this type of embodiment, when not using described specific information piece, user data module 336 will use from assign data rate option value that signal recovers and the operation of user data information bit recovery from each modulation symbol values of downlink traffic channel section.In some this type of embodiment, when using described specific information piece, user data module 336 will use by the data rate option of the output indication of specific information piece module and with in the user data information bit recovery operates from the nonspecific modulation symbol values that key signature is associated of downlink traffic channel section.
Downlink signaling module 330 is controlled the operation of receiver 302 and decoder 314 to receive and to process down link signal from BS 200, and described down link signal comprises downlink traffic channel section assignment messages and downlink traffic channel signals.In certain embodiments, DL signalling module 330 operates together in conjunction with assigning signalling module 326 and/or downlink traffic channel information to recover module 328.
Uplink signalling module 338 control transmitter 304 and the operation of encoder 316 with the uplink signal coding and be transferred to BS 200, described uplink signal comprises channel quality reporting, jamming report, uplink resource request message and uplink traffic channel section message.
Data/information 320 comprises WT data/information 344 and system data/information 362.WT data/information 344 comprises the zone field 360 that user data 348, WT identification (ID) information 350, base station IDs information 352, device/talks/resource information 354, channel quality information 350, dl interference information 358 and down link are assigned.User data 348 comprises plans to be transferred to the plan of BS 200 by the uplink traffic channel section by WT 300 for the data/information of the reciprocity device of WT 300, and described reciprocity device and WT 300 communicate talks.User data 348 also comprises to be derived from WT 300 and communicates the reciprocity device of WT 300 of talks and the data/information that receives from BS 200 via the downlink traffic section.
Wireless terminal identifying information 350 is now used user identifier including (for example) the WT that WT IP address and BS 200 assign.Base station identifiers information 352 comprises identifier, the value of difference particular B S network attachment point in a plurality of different BS network attachment point from wireless communication system for example, and wherein WT 300 uses described particular B S network attachment point as its current network attachment point.In certain embodiments, BS id information 346 comprises identification just by the particular sector of BS network attachment point use and/or the information of carrier frequency.Device/talks/resource information 354 comprises up link and the down link section (for example Traffic Channel section) that is assigned to WT300 and comprises about communicating the address of WT 300 peer node of talks and the talks information of routing iinformation with WT 300.Channel quality information 350 comprises the information of measuring, deriving and estimate about the radio communication channel between WT 300 and BS 200, for example based on the channel quality reporting of the downlink pilot signal that receives.Dl interference information 358 comprises the information that the grade of WT 300 is disturbed in identification, for example beacon ratio report.
The zone field 360 that down link is assigned comprises identification and is assigned to the information of the downlink traffic channel section of WT 300 by BS 200, for example in the down link section assignment messages that receives.The zone field 360 that down link is assigned comprises the information (section 1 information 364, section N information 366) of one or more groups, and each is organized corresponding to a downlink traffic channel section that is assigned to WT 300.Section 1 information 364 comprises section identifier 368, comprises the appointment signal message 370 of encoded rate information 372, the rate options of assigning 374 through determining, modulation symbol values 376, encoded user data 378, through user data 380 and (for some section) specific block message 382 of recovery.The described downlink traffic channel section of identification in a plurality of downlink traffic channel sections of section identifier 368 from down link timing and frequency structure.The appointment signal message comprises the information from the appointment signal that receives, and it is identified as WT 300 recipient of the downlink traffic channel section of identifying by section ID 368.Encoded rate information 372 comprises the position of specifying the appointment signal that is used for the transfer rate option information, for example, in the downlink traffic channel section for the actual data rate option of user data, or the indication that will transmit in the specific information piece of downlink traffic channel section for the actual data rate option of user data in the downlink traffic channel section.Determined is the data rate options of being assigned by BS 200 through assigning rate options 374, and be used for via the downlink traffic channel section user data signal of assigning signaling module 326 to determine (for example for the low rate option, as 0,1,2), or by the definite downlink traffic channel section user data signal (for example for the higher rate option, as rate options 3-10) of specific information piece module 334.Modulation symbol values 376 comprise to transmit encoded user data through recovering modulation symbol values.In certain embodiments, be used to the number through recovering modulation symbol values that the downlink traffic channel section transmits encoded user data whether to be contained in the downlink traffic channel section according to the specific information piece and change between (for example) two grades.Encoded user data 378 comprises from the place value of the encoded position of modulation symbol values 376 mapping, and the user data 380 through recovering comprise representative from the user data of encoded user bit 378 decodings through recovering information bit.
Specific block message 382 comprises modulation symbol values 384, encoded position 386, Format Type 388 and the information bit 390 through recovering.Modulation symbol values 384 comprise the downlink traffic channel section the specific information piece key signature through recovering modulation symbol values, for example 16 QPSK modulation symbol values.The encoded position 386 encoded information bits that comprise corresponding to modulation symbol values 384, for example 32 encoded positions.Format Type 388 comprises whether identification specific information piece is the information that formats with the first or second form method.According to coding method and the format used by Format Type 388, through recover information bit 390 comprise corresponding to the specific information piece of encoded position 386 through recovering information bit.For example, in certain embodiments, if use the first Format Type, recover 5 information bits, it comprises 1 position of transfer rate option information 392 and 4 positions of transmitting other information (for example power grade information), and when using the second Format Type, recovering 8 information bits, it comprises 3 positions of transfer rate option information 392 and 5 positions of transmitting other information (for example power grade information).
uplink/downlink timing and frequency structure information 393 are including (for example) symbol timing information, pitch interval information, the uplink tone number, the downlink tone number, uplink carrier frequency, downlink carrier frequency, uplink bandwidth, downlink bandwidth, the uplink tone group, downlink tone set, up link is jumped tone information, up link is suspended information, down link is jumped tone information, downlink traffic section structure information, uplink service section structure information, repeatability timing architecture (symbol time interval and the symbol time interval is grouped into (for example) assigns time-out between signal and downlink traffic channel section for example, half time slot, time slot, super time slot, the beacon time slot, in the relations such as overtime groove).The downlink traffic channel section comprises identification air link resources (for example key signature) is grouped into the information in each section, and identification further is grouped into the air link resources of a section information in sub-segments, for example when down link Traffic Channel section during corresponding to the one in the data rate option that uses described specific information piece, which key signature which key signature of identification downlink traffic channel section is used to specific information piece and identical downlink traffic channel section is used to the information of encoded user data block.Not on the same group UL/DL regularly and frequency structure information 393 can exist and be stored in WT 300 corresponding to the different B S 200 in wireless communication system.
Downlink traffic channel assigns signaling information 396 to comprise the information that the significance bit of each interior field of signal and the different probable values in described field is assigned in identification, for example about assigning the information of the downlink traffic channel section rate options son field in signal.for example, assign in signal and can transmit 3 possible inferior grade rate options corresponding to 2 bit rate option subfields of downlink traffic channel section, for example by bit pattern (00,01 or 10) rate options 0 of indication, 1,2, maybe can transmit the rate options of using a higher level, and actual the speed of assigning will be transmitted the part as the downlink traffic channel section in the specific information piece, for example bit pattern (11) can transmit in the specific information piece that the one used in rate options (3-10) and actual speed rate be contained in the downlink traffic channel section.
Downlink traffic channel rate options/decode/demodulates information 394 comprises various downlink traffic channel data rate options that identification supported by the base station, corresponding to the number of the mac frame of each data rate option, corresponding to the information of the number of the information bit of each data rate option, the modulation constellation, demodulation method and the coding/decoding method that use corresponding to the code word size of each data rate option and the code that uses, corresponding to each data rate option.This information 394 is used for performed demodulation and decode operation.
Specific information block message 397 comprises the first formatted data/information 398 and the second formatted data/information 399.The decipher that the first formatted data/information 398 comprises the position size of information bit field, each field of the first form, the first form specific information piece of identification which downlink traffic channel data rate option and specific information piece, provide each place value in each field, the information that the coding/decoding method of use etc. is associated, for example, inclusion information bit recovery matrix, modulation symbol are to encoded position map information, with the demodulation scheme that uses etc.For example, the first form may be associated with two downlink traffic channel rate options 3 and 4; The first form specific information piece can transmit 5 information bits, it comprises single bit rate option indicator and 4 through-put power indicator value of indicated speed option 3 or 4, and described coding can and can cause based on the Reed-Muller code 32 encoded positions are mapped to 16 QPSK modulation symbol values.The decipher that the second formatted data/information 279 comprises the position size of information bit field, each field of the second form, the second form specific information piece of identification which downlink traffic channel data rate option and specific information piece, provide each position in each field, the information that the coding/decoding method of use etc. is associated, for example, inclusion information bit recovery matrix, modulation symbol are to encoded position map information, with the demodulation scheme that uses etc.For example, the second form may with have 6 downlink traffic channel rate options 5-10 of two reservation flag and be associated; The second form specific information piece may transmit 8 information bits, it comprises indication and assigned 3 bit rate option indicator and 5 through-put power indicator value of which rate options from the scope of rate options 5-10, described coding can be based on the Reed-Muller code, and can cause 32 encoded positions are mapped to 16 QPSK modulation symbol values.The first and second formatted datas/information 398,399 can be respectively be associated from different code group, (for example) in order to be different from modulation symbol values corresponding to the second form specific information piece, for example different quadrants in complex plane corresponding to the possible QPSK modulation symbol values of the first form specific information piece.
Base station identification information 395 comprises the information of distinguishing between different base station residential quarter, sector and/or the frequency used in communication system.For example, can use the different value of pilot tones signal slope in the different adjacent cells in system.
Fig. 4 is the diagram of the form 400 of embodiment according to the present invention downlink traffic channel rate options information.The 1st row 402 are listed downlink traffic channel rate options (0,1,2,3,4,5,6,7,8,9,10).The 2nd row 404 are listed the mac frame number (1,2,3,4,5,6,8,10,12,14,18) that corresponds respectively to each rate options (0,1,2,3,4,5,6,7,8,9,10).The 3rd row 406 are listed the information bit number (k) (224,432,640,848,1056,1264,1680,2096,2512,2928,3760) that corresponds respectively to each rate options (0,1,2,3,4,5,6,7,8,9,10).The 4th row 408 are listed the code word size (n) (1344,1344,1344,2624,2624,2624,2624,3936,3936,5248,5248) that corresponds respectively to each rate options (0,1,2,3,4,5,6,7,8,9,10).The 5th lists the modulation constellation of using (QPSK, QPSK, QPSK, QAM16, QAM16, QAM16, QAM16, QAM64, QAM64, QAM256, QAM256) that corresponds respectively to each rate options (0,1,2,3,4,5,6,7,8,9,10).It should be noted that the code word size of the rate options of using QPSK corresponding to 672 OFDM key signatures, and for the rate options of using QAM16, QAM64 or QAM256 modulation constellation, code word size is corresponding to 656 OFDM key signatures.
Fig. 5 comprises the form 500 that the exemplary downlink traffic channel is assigned signaling information.The 1st row 502 comprise rate options son field value, and the rate options son field is used 2 positions.The 2nd row 504 comprise the note of identifying the connotation that is associated with each rate options son field value.The position equals 00, the downlink traffic channel section that rate options 0 is used for assigning if the 1st row 506 identifies downlink traffic channel appointment rate options son field.The position equals 01 if the 2nd row 508 identifies downlink traffic channel appointment rate options son field, uses rate options 1 in the downlink traffic channel section of assigning.The position equals 10 if the 3rd row 510 identifies downlink traffic channel appointment rate options son field, uses rate options 2 in the downlink traffic channel field of assigning.The position equals 11 if the 4th row 512 identifies downlink traffic channel appointment rate options son field, use rate options 3,4,5,6,7,8,9 or 10 in the downlink traffic channel section of assigning, and will be in the specific information piece of appointment downlink traffic channel section the rate options of signaling reality.
Figure 16 graphic extension is according to the exemplary downlink traffic channel section of each embodiment of the present invention and the series connection of modulation symbol.Piece 1600 graphic extensions comprise the exemplary downlink traffic channel section of 672 modulation symbols.
The position of high effective modulation symbol of piece 1602 indicating downlink link traffic channel sections 1600, and the position of minimum effective modulation symbol of piece 1604 indicating downlink link traffic channel sections 1604.Piece 1606 graphic extension exemplary downlink traffic channel sections, it comprises the specific information piece of 16 modulation symbols 1608 and from the piece of 656 modulation symbols of mac frame and section CRC 1610.Exemplary downlink traffic channel section 1606 can be exemplary downlink traffic channel section 1600, comprise therein in the situation of specific information piece (for example for rate options 3-10), wherein encoded user data is by the modulation technique transmission that is different from QPSK, for example QAM16, QAM64 or QAM256.The position of the highest effective modulation symbol of piece 1612 indication specific information pieces 1608, and the position of minimum effective modulation symbol of piece 1614 indication specific information pieces 1614.Piece 1616 indication comprises the position of the highest effective modulation symbol of the piece of mac frame and section CRC information 1610, and piece 1618 indications comprise the position of minimum effective modulation symbol of the piece of mac frame and section CRC information 1610.Each piece of Figure 16 (1602,1604,1608,1610,1612,1614,1616 and 1618) also illustrates not in scale, but through comprising to transmit relative position information.
Fig. 6 shows two exemplary downlink traffic channel sections 600 and 650.Each exemplary downlink traffic channel section is 48 tones wide (tone 0 is to tones 47), and occupies 16 OFDM symbol transmission time interlude intervals.Each downlink traffic channel section 600,650 all occupies the air link resources of 672 OFDM key signatures, and each OFDM key signature is by a little square frame representative.Each key signature can be used for transmitting modulation symbol values.Exemplary section 600 can represent the downlink traffic channel section that uses QPSK, for example rate options 0,1,2.Each of described 672 OFDM key signatures can be used for transmitting the encoded position corresponding to encoded user data/information position.The downlink traffic channel section of QAM16, QAM64 or QAM256 is used in exemplary section 650 representative, for example in order to the rate options 3,4,5,6,7,8,9 or 10 of transmitting user data.656 of described 672 OFDM key signatures can be used for transmitting the encoded position corresponding to encoded user data/information position.Other 16 OFDM key signatures by specific 651 representative are used for transfer rate option information and other information, for example power control information.
Fig. 6 A shows exemplary downlink traffic channel section 660.Exemplary downlink traffic channel section 660 is 48 tones wide (tone 0 is to tones 47), and occupies 16 OFDM symbol transmission time interlude intervals.Exemplary downlink traffic channel section 660 occupies the air link resources of 672 OFDM key signatures, and each OFDM key signature is by a little square frame representative.Each key signature can be used for transmitting a modulation symbol values.Exemplary section 660 can represent the downlink traffic channel section that uses QAM16, QAM64 or QAM256, for example in order to the rate options 3,4,5,6,7,8,9 or 10 of transmitting user data.656 of described 672 OFDM key signatures can be used for transmitting the encoded position corresponding to encoded user data/information position.Other 16 OFDM key signatures by specific representative are used for transfer rate option information and other information, for example power control information.In this embodiment of the invention, described specific is the synthetic of two smaller pieces (piece 661 and piece 662).Piece 661 and 662 each self-contained 8 OFDM key signatures, and occupy different OFDM notation indexs position in described section.Each several part by comprising the specific information piece in different OFDM Transmission Time Intervals in the downlink traffic channel section (for example first and last OFDM symbol transmission time interval), the specific information piece is become be not subject to the fade condition impact, and will be increased by the possibility that wireless terminal successfully recovers by the information that comprises rate options information of specific information piece transmission.
Fig. 7 shows two exemplary downlink traffic channel sections 700 and 750.Each exemplary downlink traffic channel section is 24 tones wide (tone 48 is to tones 71), and occupies 32 OFDM symbol transmission time interlude intervals.Each downlink traffic channel section 700,750 occupies the air link resources of 672 OFDM key signatures, and each OFDM key signature is by a little square frame representative.Each key signature can be used for transmitting modulation symbol values.Exemplary section 700 can represent the downlink traffic channel section that uses QPSK, for example rate options 0,1,2.Each of described 672 OFDM key signatures can be used for transmitting the encoded position corresponding to described encoded user data/information position.Exemplary section 750 can represent the downlink traffic channel section that uses QAM16, QAM64 or QAM256, for example in order to the rate options 3,4,5,6,7,8,9 or 10 of transmitting user data.656 of described 672 OFDM key signatures can be used for transmitting the encoded position corresponding to described encoded user data/information position.Other 16 OFDM key signatures by specific 751 representative are used for transfer rate option information and other information, for example power control information.
Fig. 8 shows two exemplary downlink traffic channel sections 800 and 850.Each exemplary downlink traffic channel section is 12 tones wide (tone 72 is to tones 83), and occupies 64 OFDM symbol transmission time interlude intervals.Each downlink traffic channel section 800,850 occupies the air link resources of 672 OFDM key signatures, and each OFDM key signature is by a little square frame representative.Each key signature can be used for passing the method modulation symbol values.Exemplary section 800 can represent the downlink traffic channel section that uses QPSK, for example rate options 0,1,2.Each of described 672 OFDM key signatures can be used for transmitting the encoded position corresponding to described encoded user data/information position.Exemplary section 850 can represent the downlink traffic channel section that uses QAM16, QAM64 or QAM256, for example in order to the rate options 3,4,5,6,7,8,9 or 10 of transmitting user data.656 of described 672 OFDM key signatures can be used for transmitting the encoded position corresponding to described encoded user data/information position.Other 16 OFDM key signatures by specific 851 representative are used for transfer rate option information and other information, for example power control information.
Fig. 9 is the form 900 of describing the specific information block message of downlink traffic channel section rate options information and correspondence.The 1st row 902 are listed downlink traffic channel section rate options scope; Whether the 2nd row 904 identifications use the specific information piece; The 3rd row 906 described specific information pieces of identification Format Type in use.The 1st row 908 is described for downlink traffic channel rate options 0-2, does not implement the specific information piece.The 2nd row 910 is described for rate options 3-4, and the specific information piece is contained in the downlink traffic channel section, and specific information piece use first kind form, and namely form 1.The 3rd row 912 is described for rate options 5-10, and the specific information piece is contained in the downlink traffic channel section, and specific information piece use Second Type form, and namely form 2.
Figure 10 is the form 1000 of describing the exemplary specific information piece of use-case personality formula 1 in the downlink traffic channel section.Use the exemplary specific information piece of first kind form to transmit 5 information bits.The parameter that the 1st row 1002 identifications are associated with the specific information piece; The 2nd row 1004 comprise the information bit size with each parameter correlation connection; The value that the 3rd row 1006 descriptor positions can represent; The 4th row 1008 comprise the record that is associated with described value.If the 1st row 1010 is described the rate indicator parameter value of equaling 0 by 1 information bit representative, the downlink traffic channel section uses rate options 3.If the 2nd row 1012 is described the rate indicator parameter value of equaling 1 by 1 information bit representative, the downlink traffic channel section uses rate options 4.The 3rd row 1014 is described the through-put power indicator value that through-put power designator parameter by 4 information bits representatives can have the through-put power of integer value n in 0 to 15 scope, indicating downlink link traffic channel section, wherein said value is nonnegative integer n, and the relative through-put power of every tone of its indicating downlink link traffic channel section has downlink traffic channel power excursion=n/4+2dB.
Figure 11 is the form 1100 of describing the exemplary specific information piece of use-case personality formula 2 in the downlink traffic channel section.Use the exemplary specific information piece of Second Type form to transmit 8 information bits.The parameter that the 1st row 1102 identifications are associated with the specific information piece; The 2nd row 1104 comprise the information bit size with each parameter correlation connection; The value that the 3rd row 1106 descriptor positions can represent; The 4th row 1108 comprise the record that is associated with described value.If the 1st row 1110 is described the rate indicator parameter value of equaling 0 by 3 information bit representatives, the downlink traffic channel section uses rate options 5.If the 2nd row 1112 is described the rate indicator parameter value of equaling 1 by 3 information bit representatives, the downlink traffic channel section uses rate options 6.If the 3rd row 1114 is described the rate indicator parameter value of equaling 2 by 3 information bit representatives, the downlink traffic channel section uses rate options 7.If the 4th row 1116 is described the rate indicator parameter value of equaling 3 by 3 information bit representatives, the downlink traffic channel section uses rate options 8.If the 5th row 1118 is described the rate indicator parameter value of equaling 4 by 3 information bit representatives, the downlink traffic channel section uses rate options 9.If the 6th row 1120 is described the rate indicator parameter value of equaling 5 by 3 information bit representatives, the downlink traffic channel section uses rate options 10.If the 7th row 1122 is described the rate indicator parameter value of equaling 6 by 3 information bit representatives, this is reserve.If eighth row 1124 is described the rate indicator parameter value of equaling 7 by 3 information bit representatives, this is reserve.The through-put power designator parameter that the 9th row 1126 descriptions are represented by 5 information bits can have the integer value in 0 to 31 scope, the through-put power of described through-put power indicator value indicating downlink link traffic channel section, wherein said value is nonnegative integer n, and the relative through-put power of every tone of its indicating downlink link traffic channel section has downlink traffic channel power excursion=n/4+2dB.
Figure 12 comprises exemplary specific information piece 1202, and it comprises 16 exemplary modulation symbols (SO, SI, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S13, S14, SI5).The form 1204 identification A of group codes are used for first kind form and comprise 5 information bits of 1 rate options designator bit with transmission.Figure 120 8 (being the figure of complex plane) indication A of group code uses the QPSK modulation symbol values of the appointment quadrant of two diagonal angles arrangements that may be positioned at four quadrants, and is as indicated in modulation symbol values 1210 and modulation symbol values 1214.Form 1206 is identified group's B-code and is comprised 8 information bits of 3 rate options designator bit with transmission for the Second Type form.Figure 121 6 (being the figure of complex plane) indication group B-code uses two QPSK modulation symbol values of specifying quadrants that may be arranged in described four quadrant diagonal angle arrangements, and is as indicated in modulation symbol values 1218 and modulation symbol values 1220.It should be noted that two quadrants that use for group's A code are different from two quadrants that use as the type B code.
According to a feature of the present invention, (for example) can catch the energy of 16 modulation symbols of described specific information section via assigning signal to receive known downlink traffic channel section with the WT that comprises the specific information piece, and the identification energy just gathers along which two possible diagonal.This will identify the form that uses, and can be decoded in the encoded position of specific information piece, and can recover to comprise the original information bits of one or more rate options designator bit.
According to another feature of some embodiment of the present invention, the decoding capability of mobile node can be complementary with the number of position.If mobile node can not successfully be decoded the little code that is associated with the specific information piece, mobile node can not be realized and will use the encoded user information bit decoding of QAM 16, QAM64 or QAM256 in the downlink traffic channel section.In addition, in certain embodiments, the specific information piece encoded when transmitting the information bit of the first number and first group of data rate option be complementary, simultaneously encoded when transmitting the information bit of the second number and second group of data rate option be complementary, first group of data rate option is lower than second group of data rate option, and the first number of information bit is lower than the second number of information bit.For example, consider to use the exemplary embodiment of 11 downlink traffic channel data rate options (0-10), wherein the minimum data rate option is data rate option 0, the user data that represents 1 frame just transmits in the downlink traffic channel section, and the peak data rate option is 10, represents that the user data of 18 frames just transmits in the downlink traffic channel section.In this kind embodiment, for minimum group of data rate option (0-2), do not use the specific information position, and the QPSK modulation constellation is used for encoded user bit; For middle-bracket data rate option (3-4), use and to have 5 information bits the specific information piece of (its comprise 1 data rate options position), and use QAM 16 modulation constellation to be used for encoded user bit; For high-grade data rate option (5-10), use has 8 information bits specific information piece of (it comprises 3 information bits that are used for transmitting the data rate option), and use the one in QAM16, QAM64 or QAM256 modulation constellation to be used for encoded user bit, wherein the one in QAM16, QAM64 or QAM256 is the function of data rate option.
Figure 13 is that graphic extension is processed to encoded position according to the exemplary information bit of the specific information piece of use first form of downlink traffic channel section of the present invention and encoded of exemplary shows 1300 to the modulation symbol Map's graph.Figure 13 graphic extension obtains processing and the mapping of exemplary first form of 32 encoded positions from 5 information bits that comprise 1 rate indicator option bit, and it is mapped to described encoded position 16 modulation symbols of described specific information piece.Information bit vector 1302 multiply by and produces matrix (G 6,32) 1304 to produce encoded bit vector 1306, each element of wherein said vector and matrix is all 0 or 1.Information bit vector (b 4b 3b 2b 1b 00) 1308 can be information bit vector 1302, wherein each b 4..., b 05 one in information bit, and (the b for example of the one in described information bit 4) can be the rate options designator bit.The generation matrix 1310 that uses the Reed-Muller code can be to produce matrix 1304, and encoded carry-out bit vector (X 31, X 30..., X 0) 1312 can be encoded bit vector 1306.Piece 1314 shows that encoded position is to the mapping of the exemplary from vector 1312 to modulation symbol.Piece 1316 is illustrated as modulation symbol S0 and specifies the highest effective modulation symbol, and is that modulation symbol S15 specifies minimum effective modulation symbol, and each of described 16 modulation symbols represents that all encoded position is to (0,0) or (1,1).
Figure 14 and Figure 15 are that graphic extension is processed to encoded position according to the exemplary information bit of the specific information piece of use the second form in downlink traffic channel section of the present invention and encoded of exemplary arrives (first of modulation symbol mapping, second) diagram (1400,1500) of part.Processing and the mapping of Figure 14 and Figure 15 graphic extension exemplary together the second form, described the second form obtains 32 encoded positions from 8 information bits that comprise 3 rate indicator option bit, and described encoded position is mapped to 16 modulation symbols of specific information piece.Information bit vector 1402 multiply by and produces matrix (G 5,16) 1404 to produce encoded bit vector 1406, each element of wherein said vector sum matrix is all 0 or 1.Information bit vector (b 7b 6b 5b 41) 1408 can be information bit vector 1402, wherein each b 7... b 4All 8 one in information bit, and 3 (for example, b in described information bit 7, b 6, b 5) can be the rate options designator bit.The generation matrix 1410 that uses the Reed-Muller code can be to produce matrix 1404, and encoded carry-out bit vector (X 15, X 14..., X 0) 1412 can be encoded bit vector 1406.Piece 1414 shows that encoded position is to the exemplary mapping from 1412 to 8 modulation symbols of vector.Piece 1416 is illustrated as modulation symbol S0 and specifies the highest effective modulation symbol, and each of described 8 modulation symbols represents that all encoded position is to (1,0) or (0,1).Information bit vector 1502 multiply by and produces matrix (G 5,16) 1504 to produce encoded bit vector 1506, each element of wherein said vector sum matrix is all 0 or 1.Information bit vector (b 3b 2b 1b 01) 1408 can be information bit vector 1402, wherein each b 7..., b 4All 8 one in information bit.The generation matrix 1510 that uses the Reed-Muller code can be to produce matrix 1504, and encoded carry-out bit vector (Y 15, Y 14..., Y 0) 1512 can be encoded bit vector 1506.Piece 1514 shows that encoded position is to the exemplary mapping from 1512 to 8 modulation symbols of vector.Piece 1516 is illustrated as modulation symbol S 15Specify minimum effective modulation symbol, and each of described 8 modulation symbols represents that all encoded position is to (1,0) or (0,1).
In certain embodiments, 3 encoded rate options positions can be contained in information bit vector 1508, rather than in information bit vector 1408, and in other embodiments, described 3 rate options designator bit can be cut apart between information bit vector 1408 and 1508, and wherein some rate options designator bit is included in each vector 1408,1508.
consider encoded bit pattern (0, 0) through shining upon to be rendered as the QPSK modulation symbol in first quartile, for example has value (1+i) in complex plane, encoded bit pattern (1, 1) put mutually QPSK modulation symbol in quadrant through mapping to be rendered as second diagonal angle, for example has value (1-i) in complex plane, encoded bit pattern (1, 0) through shining upon to represent the QPSK modulation symbol in third quadrant, for example has value (1,-i), and encoded bit pattern (0, 1) through mapping to represent the 4th the QPSK modulation symbol in the quadrant of putting mutually with the third quadrant diagonal angle, for example has value (1 in complex plane, i).If the specific information piece is first kind form, each of described 16 modulation symbol values will be in by in two first groups of forming, if and described specific information piece is the Second Type form, each of described 16 modulation symbols will be in second group of forming by two, described second group with described first group of mutual exclusion.At first the wireless terminal that receives described specific information piece modulation signal can determine described signal is corresponding to which one of described two groups, can determine the corresponding Format Type that uses, and can use determined Format Type with the rate options of signal decoding to recover to transmit.
Figure 17 is the flow chart 1700 that operates the exemplary methods of base station according to the present invention.Operation starts from step 1702, and wherein the base station switches on and is initialised.For each downlink traffic channel section, operation proceeds to step 1704.In step 1704, the base station is defined as the rate options that described downlink traffic channel section is determined wireless terminal to be assigned and is used for described section, for example corresponding to the data rate option of code rate information.In certain embodiments, the base station can be assigned to the downlink traffic channel section more than a user, the part of for example assigning or broadcasting as multicast.In certain embodiments, wherein do not exist and wait to be particular downlink Traffic Channel section transmitting subscriber identify, for example due to low system loading grade, the base station can not assigned for described section, or transmit the virtual appointment that expression is not assigned for described section, and do not transmit for described downlink traffic channel section subsequently.Determine which wireless terminal receives the appointment of described downlink traffic channel section and the rate options of described section can be determined according to the policing rule of base station dispatcher, and can comprise the level of interference information of using, such as partly according to (such as) feedback reports such as beacon ratio report that receive from wireless terminal derive.Operation proceeds to step 1706 from step 1704.
In step 1706, the definite rate options of institute of downlink traffic channel section is determined whether corresponding to the QPSK modulation in the base station, or corresponding to different modulation schemes, for example the one in QAM16, QAM64, QAM256.For example, downlink traffic channel can be supported 11 different rate options, each rate options all is associated with code rate and modulation scheme, and rate options 0,1,2 (being 3 minimum in described 11 data rate options) can be used the QPSK modulation.If the determined rate options of determining of step 1706 is modulated corresponding to QPSK, operation proceeds to step 1708; Otherwise operation proceeds to step 1710.
In step 1708, the base station with in the downlink traffic channel section corresponding to the rate options coding of the appointment signal (for example indicated speed option 0,1 or 2) of described downlink traffic channel section.In certain embodiments, there is fixing predetermined association, will assigns signal and downlink traffic channel section and down link timing architecture to link.Then, in step 1712, the base station will assign signal to send to wireless terminal via downlink signaling.Operation proceeds to step 1714 from step 1712.In step 1714, the base station is used corresponding to the code rate of determined rate options the user data of described downlink traffic channel section is encoded.Operation proceeds to step 1716 from step 1714.In step 1716, in step 1716, the base station uses QPSK to be mapped to modulation symbol values from the encoded position of the operation of step 1714.Operation proceeds to step 1718 from step 1716.In step 1718, the base station is through operating so that modulation symbol values is associated with the key signature of Traffic Channel section.Then, in step 1720, the base station is through operating with communicating downlink Traffic Channel section signal.
Return to step 1706, if determined rate options and do not correspond to QPSK modulation in step 1706 operates from step 1706 and proceeds to step 1710.For example, downlink traffic can be the downlink traffic channel section and supports 11 different rate options, and 8 data rate options (rate options 3-10) the highest can be corresponding to non-QPSK modulation.In step 1710, the base station will assign in signal corresponding to the information coding of downlink traffic channel section, indicates the assigned rate option value of described downlink traffic channel section to transmit in the specific information piece of described downlink traffic channel section through operation.For example, assign signal can have the field that comprises two positions that are associated with rate options information, and when the value in described two positions is AD HOC (for example 11), the plastics option value of described modal representation downlink traffic channel section will be transmitted in the specific information piece of described section, and the rate options value will be in the scope of (for example) 3-10.Operation proceeds to step 1722 from step 1710, and wherein the base station is through operating will assign signal to send to wireless terminal.Operation proceeds to step 1724 from step 1722.
In step 1724, the base station is corresponding to the first form or the second form through operation with definite determined rate options.For example, exemplary rate options 3-10 can through cutting apart with corresponding to two different-formats, supply to be used for the specific information piece.The first form can be corresponding to lower data speed (for example rate options 3-4), and the second form can be corresponding to higher data rate (for example rate options 5-10).If determine determined rate options corresponding to the first dedicated block form in step 1724, operation proceeds to step 1726 and 1728; And if definite determined rate options is corresponding to the second dedicated block form in step 1724, operation proceeds to step 1730 and 1732.
In step 1726, encode the user data of downlink traffic channel section to use corresponding to the code rate of the definite rate options of institute through operation in the base station, for example the one in rate options 3 or 4.Operation proceeds to step 1734 from 1726, and wherein the base station is mapped to modulation symbol values with the definite rate options of institute of using QAM16 according to (for example) with encoded in step 1726 through operation.
In step 1728, the base station is encoded into 32 encoded positions through operation to use the first coding method will comprise 5 information bits that are used for the position of rate options information, for example produce 16 encoded positions right, wherein each encoded position is to being all the one in (00) or (11).In certain embodiments, use the Reed-Muller code in step 1728.
In step 1732, encode the user data of downlink traffic channel section to use corresponding to the code rate of the definite rate options of institute through operation in the base station, for example the one in rate options 5,6,7,8,9,10.Operation proceeds to step 1742 from 1732, wherein the base station through operation to use QAM16 corresponding to rate options 5-6 according to (for example), to be mapped to modulation symbol values corresponding to the QAM64 of rate options 7-8 or corresponding to the definite rate options of institute of the QAM256 of rate options 9-10 with encoded in step 1732.
In step 1730, the base station is encoded into 32 encoded positions through operation to use the second coding method will comprise 38 information bits that are used for the position of rate options information, for example produce 16 encoded positions right, wherein each encoded position is to being all the one in (10) or (01).In certain embodiments, use the Reed-Muller code in step 1730.
Operation proceeds to step 1738 from step 1728 or step 1730, and wherein the base station is mapped to modulation symbol with use QPSK with described 32 encoded positions through operation.Operation proceeds to step 1740 from step 1738, wherein the base station through operation so that modulation symbol values is associated with key signature for the downlink traffic channel section of dedicated block information reservation.
Operation proceeds to step 1736 from step 1734 or step 1742, and wherein the base station is through operating so that the modulation symbol values in step 1734 or step 1742 is associated with the key signature of the Traffic Channel section that partly keeps for user data.
Operation proceeds to step 1720 from step 1740 and 1736, and wherein the base station is through operating with communicating downlink Traffic Channel section signal.
Assign signal to have about transmission time and/or the frequency fixedly predetermined relationship to the Traffic Channel section of assigning signal and assigning at some but the downlink traffic channel section that uses in needing not to be whole embodiment of the present invention.Down link in each embodiment of the present invention assigns signal can comprise corresponding to indivedual wireless terminals, now use the wireless terminal identifier of the zero-bit group of wireless terminal group or wireless terminal, wherein zero-bit group be wherein do not assign in certain embodiments existing with wireless terminal but use it for the wireless terminal group of the section (for example, obsolete section) of not planning to carry existing data with terminating machine.Therefore, in the situation of multicast transmission, the WT group identifier can be contained in and assign in signal, and the member of described group will listen to and use the downlink traffic section of assigning.
Figure 18 is the diagram of the flow chart 1800 of the exemplary methods of operate wireless terminating machine according to the present invention.Described exemplary methods starts from step 1802, and wherein wireless terminal is energized and initialization.Operation proceeds to step 1804 from step 1802, and wherein wireless terminal receiving downlink business section is assigned signal.Operation proceeds to step 1806 from step 1804.In step 1806, wireless terminal is with the appointment signal message decoding that receives, and one or more wireless terminals of assigning are corresponding to the downlink traffic channel section of assigning.The appointment of downlink traffic channel section can be to assign corresponding to the clean culture of single WT, or the appointment of downlink traffic channel section can be the multicast appointment corresponding to WT group.Operation proceeds to step 1808 from step 1806.
In step 1808, WT determines the downlink traffic channel that receives assigns whether point to WT.If in step 1808, WT determines that described appointment do not point to itself, operates from step 1808 and continues to get back to step 1804, and wherein WT receives other downlink traffic channel sections and assigns signal.Yet if in step 1808, WT determines that described appointment points to itself, operates from step 1808 and proceeds to step 1810 and step 1812.
In step 1810, WT is further with the appointment signal message decoding of the indicated speed option information that receives, is contained in indication in corresponding downlink traffic channel section to obtain data rate option indicator value or data rate option indicator value.For example, WT can support 11 downlink data rate option as showing in Fig. 4, assign signal can comprise the rate options field with 2 positions, pattern 00 designation data rate options 0 wherein, pattern 01 designation data rate options 1, pattern 10 designation data rate options 2, and pattern 11 indicated speed options are the corresponding downlink traffic channel section indicating in specific information piece part, and rate options will be the one in rate options 3-10.
In step 1812, WT receives the Traffic Channel section signal corresponding to the appointment section, with the Traffic Channel section signal 1814 that obtains to be received.Traffic channel signal 1814 use that receive are done the input to step 1820 and/or 1828.
Operation proceeds to step 1816 from step 1810.In step 1816, WT determines whether indicate through the rate options information of decoding the specific data rate option that is just using in the downlink traffic channel section.If really comprise the data rate option of specific special use through the rate options information of decoding, operation proceeds to step 1818; Otherwise operation proceeds to step 1820.
In step 1818, WT determines one or more in the code rate of modulator approach, downlink traffic channel section and modulation symbol mapping according to the exclusive data rate options.For example, data rate 0 can be corresponding to QPSK modulation constellation, 224 information bits, 1344 encoded positions with corresponding to each OFDM key signature through the downlink traffic channel section of mapping code position of user data; Data rate 1 can be corresponding to QPSK modulation constellation, 432 information bits, 1344 encoded positions with corresponding to each OFDM key signature through the downlink traffic channel section of mapping code position of user data; Data rate 2 can be corresponding to QPSK modulation constellation, 640 information bits, 1344 encoded positions with corresponding to each OFDM key signature through the downlink traffic channel section of mapping code position of user data.For example, the downlink traffic channel section can comprise 768 OFDM key signatures, and each of described 768 OFDM key signatures can be used for transmitting data rate option 0,1 or 2 each the QPSK modulation symbol through the user bit of mapping code.Operation proceeds to step 1828 from step 1818.
In step 1820, wireless terminal is used the specific information piece partial decoding of h of the Traffic Channel section signal 1814 that receives with the user data part that obtains the downlink traffic channel section data rate option.For example, in example system, the downlink traffic channel section can comprise 768 OFDM key signatures, and when usage data rate options 3-10, the downlink traffic channel sector division is become to comprise the specific information piece and the user data block that comprises 752 key signatures of 16 key signatures.Step 1820 comprises substep 1822 and substep 1824.In substep 1822, whether what wireless terminal was determined the specific information piece belongs to first or second group of code through recovering modulation symbol.For example, the specific information piece can use the QPSK modulation symbol, and first group of code can use QPSK modulation symbol (0,0) and (1,1), and second group of code can use QPSK modulation symbol (1,0) or (0,1).In substep 1824, wireless terminal is according to the first form of first group of code or the encoded position decoding that will transmit in the specific information piece according to the second form of second group of code.For example, first group of code can corresponding to the first form, wherein transmit 5 information bits that comprise 1 rate options designator bit, for example rate options 3 of indicator diagram 4 or data rate option 4; And second group of code can be corresponding to the second form, wherein transmits 8 information bits that comprise 3 rate indicator positions, for example the one in the rate options 5-10 of indicator diagram 4.The WT that determines described code-group in substep 1822 decodes according to the suitable form in step 1824, to recover data rate option indicator value.Operation proceeds to step 1826 from step 1820.
In step 1826, WT determines the modulator approach, code rate of downlink traffic channel section and one or more in the modulation symbol mapping according to determined through the designation data rate options.For example, consider that step 1824 determines the mapping that the one in the data rate option 3-10 of Fig. 4 indicating and the code rate that is associated, modulation constellation (for example QAM16, QAM64 or QAM256) and encoded user bit arrive 752 key signatures of downlink traffic channel section.Operation proceeds to step 1828 from step 1826.
In step 1828, WT (for example) recovers the user data information position of transmitting via the demodulation code with determined modulation symbol map information, modulator approach information with from the code rate information that step 1818 or step 1826 obtain the downlink traffic channel section.Step 1828 comprises the processing of the traffic channel signal 1814 (those that for example are associated with user data) that receives.
This application case is intended to variously can be used for implementing based on OFDM, CDMA and/or the method and apparatus of the communication system of other communication meanss in a large number.Equally, although this paper is described take ofdm system as background, many method and apparatus of the present invention are applicable to the mass communication system that comprises many OFDM and/or non-cellular system.
In various embodiments, implement node described herein to carry out corresponding to one or more methods of the present invention with one or more modules, for example signal is processed.These modules can be implemented with the combination of software, hardware or software and hardware.Many said methods or method step can use and be contained in machine-readable medium (storage arrangement for example, as RAM, soft dish etc.) in machine-executable instruction (for example software) implement, with control (such as) machines such as all-purpose computer that have or do not have other hardware carry out all or part of said method in (for example) one or more nodes.Therefore, among other things, the present invention also is intended to a kind of machine-readable medium that comprises machine-executable instruction, described machine-executable instruction be used for making (such as) machines such as processor and associated hardware carry out one or more steps of said method.
Consider above-mentioned explanation of the present invention, will be apparent to the person of ordinary skill in the field to various other versions of said method of the present invention and equipment.These versions will be regarded as within the scope of the invention.Method and apparatus of the present invention can and be in various embodiments by CDMA, Orthodoxy Frequency Division Multiplex (OFDM) and/or various other types can be used for provide the communication technology of the wireless communication link between access node and mobile node to use.In certain embodiments, access node is as implementing with the base station of the communication link of mobile node with OFDM and/or CDMA foundation.In various embodiments, mobile node is to implement as the notebook, personal digital assistant (PDA) or other mancarried devices that comprises receiver/transmitter circuitry and logic and/or routine that are used for enforcement the whole bag of tricks of the present invention.

Claims (34)

1. method that operates the base station, described method comprises:
The encoded data rate option information of transmission in the first of the first communication section; And
The encoded user data of transmission in the second portion of described the first communication section.
2. the method for claim 1, the step of the described encoded data rate option information of wherein said transmission comprises uses the first described encoded data rate option information of modulator approach modulation, described the first modulator approach to be different from be used to the modulator approach of modulating described encoded user data.
3. the method for claim 1, wherein use and for the different coding method of the coding method of the described user data of encoding, encoded data rate option information encoded.
4. the method for claim 1, it further comprises:
selected the data rate option before described first and second parts of described the first communication section of transmission, described data rate option is corresponding to the one in a plurality of different pieces of information rate options groupings, each in described different pieces of information rate options grouping is corresponding to a different pieces of information rate options designator coding method, in described a plurality of grouping first grouping is corresponding to the first data rate option indicator coding method, wherein with the data rate option of the described selection of appointment signal indicating of the described segments apart of communicating by letter, in described a plurality of grouping second grouping is corresponding to the second data rate option indicator coding method, wherein the data rate option information is included in described communication section, the described data rate option of selecting for described the first communication section is in described the second grouping.
5. method as claimed in claim 4, wherein said the first data rate option indicator coding method identify uniquely selected will be for the data rate option of the described user data of code communication section, and wherein when using described the first data rate option indicator coding method, the described communication section of selecteed described option does not comprise encoded data rate option information.
6. method as claimed in claim 3, it further comprises the described coding method of determining to be ready to use in described encoded data rate option information based on data rate option to be transmitted.
7. method as claimed in claim 6, the wherein said step of determining described coding method comprises selects the first coding method, and single bit rate option indicator is encoded in described the first coding method; And wherein multidigit rate options designator is encoded in the second coding method.
8. method as claimed in claim 6, the wherein said step of determining described coding method comprises selects the second coding method, and multidigit rate options designator is encoded in described the second coding method; And wherein single bit rate option indicator is encoded in the first coding method.
9. method as claimed in claim 2, wherein use the described encoded data rate option information of QPSK modulation, and wherein use the described encoded user data of one modulation in QAM16, QAM64 and QAM256.
10. the method for claim 1, it further comprises:
Signal is assigned in transmission first, described first assigns signal to transmit is used for providing position corresponding to the first number of the data rate option information of described the first communication section, and the first number of institute's rheme is less than the required bits number of each data rate option in whole group of institute's supported data rate options of unique identification.
11. method as claimed in claim 10, wherein said first assigns the data rate option information indication in signal: the additional data rate option information is included in described communication section.
12. method as claimed in claim 11, wherein the described data rate option corresponding to described the first communication section is the highest institute's supported data rate options in described whole group of institute's supported data rate options.
13. method as claimed in claim 11, it further comprises:
Transmission is used for that the second communication section is assigned to second of the first wireless terminal and assigns signal, described second assigns signal to transmit is used for providing position corresponding to the second number of the data rate option information of described second communication section, the second number of institute's rheme is identical with the first number of institute's rheme, and less than the required bits number of each data rate option in whole group of institute's supported data rate options of unique identification, described second assigns signal designation corresponding to the actual data rate option of described second communication section.
14. method as claimed in claim 13, wherein said actual data rate option are minimum institute's supported data rate options.
15. method as claimed in claim 14, wherein said minimum institute's supported data rate options is QPSK data rate option.
16. method as claimed in claim 15, wherein said first assigns signal to comprise the first identifier, the wireless terminal that described the first communication section of described the first identifier indication is assigned to or wireless terminal group; And
Wherein said second assigns signal to comprise the second designator, the wireless terminal that described the second described second communication section of designator indication is assigned to or wireless terminal group.
17. method as claimed in claim 15, it further comprises:
Transmission comprises the described second communication section of encoded user data.
18. method as claimed in claim 17, wherein said the first communication section and described second communication section are the Traffic Channel sections.
19. method as claimed in claim 18, wherein said the first communication section and described second communication section represent in repeated down link timing and frequency structure, different time is the place, identical appointment logic block.
20. method as claimed in claim 19, wherein said the first and second communication sections transmit the modulation symbol of similar number.
21. method as claimed in claim 20, the mixing of wherein said the first communication section transmission and encoded modulation symbol values that is associated of user data and the modulation symbol values that is associated with non-user data, the described modulation symbol values that is associated with non-user data comprises the data rate option information; And
Wherein, run through whole second communication section, described second communication section transmits the modulation symbol values of encoded user data block.
22. a base station, it comprises:
Down link section rate options determination module, it is through enabling to determine to be ready to use in the downlink transmission data rate options of transmitting user data in the downlink communication section; And
Assign signal rate option coding module, it is through enabling to assign the data rate option information coding in signal, described data rate option information indication, be used for the described data rate option of downlink communication section corresponding to the described appointment signal that just is being encoded or information indication, the indication of described information is used to refer to described data rate option and is included in block of information, and described block of information is included in described down link section corresponding to the described appointment signal that just is being encoded.
23. base station as claimed in claim 22, it further comprises:
User data coding and mapping block, it supports a plurality of data rate options; And
Non-user data information coding and mapping block, its support is used to indicate at least two different forms for the described data rate option of the down link section of correspondence, at the down link section indicating of the described correspondence data rate option for it.
24. base station as claimed in claim 23, it further comprises:
Transport module, it is used for assigning signal and encoded signal at the down link section communicating downlink section of assigning.
25. base station as claimed in claim 24, described at least two different-formats that wherein are used to indicate for the described data rate option of the down link section of correspondence comprise the first form that uses single bit rate option indicator and the second form that uses multidigit rate options designator.
26. base station as claimed in claim 25, wherein said user data coding and at least two dissimilar section utilizations of mapping block support: the section utilization of the first kind, its each transmission unit that comprises with section transmits encoded user data; And the section utilization of Second Type, wherein with described sector division for being used for transmitting encoded data rate option information but do not transmit the first of user data and be used for transmitting the second portion of encoded user data.
27. a method that operates the base station, described method comprises:
For each in a plurality of downlink communication sections waiting for transmission:
i.) selection is corresponding to the data rate option of the one in a plurality of different pieces of information rate options groupings, each in described different pieces of information rate options grouping is all corresponding to a different data rate option indicator coding method, in described a plurality of grouping first grouping is corresponding to the first data rate option indicator coding method, wherein with the data rate option of the described selection of appointment signal indicating of the described segments apart of communicating by letter waiting for transmission, in described a plurality of grouping second grouping is corresponding to the second data rate option indicator coding method, wherein the data rate option information is included in described communication section waiting for transmission, and
ii) the described appointment signal of transmission, the appointment of the described downlink communication section that described appointment signal designation just is being assigned, described downlink communication section just is being assigned to wireless terminal or wireless terminal group, described appointment signal comprises encoded rate options information, described encoded rate options information indication, when the data rate option of described selection is in described the first grouping, the code rate option that is used for encoded user data is included in the described downlink communication section that just is being assigned, and described appointment signal designation, when the data rate option of described selection is in described the second grouping, the described downlink communication section that just is being assigned comprises the data rate option information, described data rate option information is in described downlink communication section.
28. method as claimed in claim 27, wherein for each in a plurality of downlink communication sections waiting for transmission, described method comprises following additional step:
According to the data rate option of described selection, user data is encoded; And
The described encoded user data of transmission in the downlink communication section of described appointment.
29. method as claimed in claim 28, wherein, the data rate of the described selection of each in a plurality of downlink communication section waiting for transmission is corresponding to described the second grouping, and for each in a plurality of downlink communication sections waiting for transmission, described method comprises following additional step:
With the data rate option information coding that is included in the downlink communication section of described appointment; And
Use the described encoded data rate option information of first transmission of described section, the first of described section is different from the second portion that is used for transmitting described encoded user data of the downlink communication section of described appointment.
30. method as claimed in claim 29 wherein uses the coding method different from the described coding method of the described user data that is used for encoding to encode to wait the encoded data rate options information of the downlink communication section that is included in described appointment.
31. method as claimed in claim 30, wherein, for each in a plurality of downlink communication sections waiting for transmission, described method comprises following additional step:
Determine to be ready to use in the described coding method of described encoded data rate option information based on the data rate option of described selection to be transmitted.
Select the first coding method 32. method as claimed in claim 31, the step of wherein said definite described coding method comprise, single bit rate option indicator is encoded in described the first coding method; And wherein multidigit rate options designator is encoded in the second coding method.
33. method as claimed in claim 29, wherein, for each in a plurality of downlink communication sections waiting for transmission, described method comprises following additional step:
Modulate described encoded data rate option information with the first modulator approach different from the modulator approach that is used for modulating described encoded user data.
34. comprising, method as claimed in claim 33, the step of the described encoded data rate option information of wherein said modulation use QPSK; And
Wherein modulate described encoded user data with the one in QAM16, QAM64 and QAM256.
CN200680034199.3A 2005-07-20 2006-07-19 Methods and apparatus for implementing and using an in-band rate indicator Expired - Fee Related CN101326745B (en)

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