CN101473578A - Methods and apparatus for measuring, communicating and/or using interference information - Google Patents
Methods and apparatus for measuring, communicating and/or using interference information Download PDFInfo
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- CN101473578A CN101473578A CNA200780022716XA CN200780022716A CN101473578A CN 101473578 A CN101473578 A CN 101473578A CN A200780022716X A CNA200780022716X A CN A200780022716XA CN 200780022716 A CN200780022716 A CN 200780022716A CN 101473578 A CN101473578 A CN 101473578A
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Abstract
Wireless communications methods and apparatus are described. A communicat ions apparatus, e.g., a base station, measures interference information, e.g ., other sector interference information. The communications apparatus gener ates a preamble which includes a plurality of pilot symbols and at least one of the pilot symbols includes interference information. In some embodiments , the preamble is part of a superframe structure, e.g., a recurring superfra me strucuture, including the preamble and a plurality of frames, at least so me of the frames used to convey traffic data. The communications apparatus t ransmits the preamble, thus broadcasting the interference information to acc ess terminals in the vicinity. An access terminal receives the preamble incl uding a plurality of pilot signals, at least one of the pilot signals includ ing interference information. The access terminal recovers the interference information from the received preamble and controls signal transmission base d on the recovered interference information.
Description
Related application
The application requires the rights and interests of following application: the name of submitting on June 23rd, 2006 is called the U.S. Provisional Patent Application S.N.60/816 of " being used for the superelevation data rate (UHDR) that mobile broadband wireless inserts ", 281; The name of submitting on June 21st, 2006 is called the U.S. Provisional Patent Application S.N.60/815 of " allocated bandwidth that is used for wireless communication system ", 664; Be called the U.S. Provisional Patent Application S.N.60/815 of " superframe structure that is used for wireless communication system ", 773 with the name of submitting on June 21st, 2006.Above-mentioned each patent application all is herein incorporated by reference specially.
Technical field
Each embodiment pays close attention to wireless communications method and equipment, particularly transmits and/or use interfere information.
Background technology
Wireless communication system has become the spread path of most of in the world people so as to communication.It is more and more littler that Wireless Telecom Equipment becomes, and from strength to strength, thereby satisfies consumer's requirement and improve mobility and convenience.Raising such as cellular mobile device disposal ability causes the requirement of wireless network transmission system is improved.This system is the such easy renewal of cellular device not as communicating by this system usually.When mobile device capability improves, be difficult to so that give full play to and newly keep old Radio Network System with mode improved wireless device performance.
Wireless communication system uses different modes to generate the transfer resource of channel form usually.These systems can be code division multiplexing (CDM) systems, frequency division multiplexing (FDM) system and Time Division Multiplexing system.The distortion a kind of commonly used of FDM is OFDM (OFDM), and it is divided into the whole system bandwidth subcarrier of a plurality of quadratures effectively.These subcarriers also can be called as tone, frequency (bin) or frequency channels.Each subcarrier can be modulated with data.Employing is based on the technology of time-division, and each subcarrier can be used for all or a part of consecutive hours sheet or time slot.The combination of an above time slot and subcarrier can be provided to each user, be used for transmitting and receiving information at the burst period or the frame that limit.Hopping scheme usually can is-symbol rate hopping scheme or piece hopping scheme.
The technology of dividing based on sign indicating number is within the specific limits some usable frequency transmitting datas of any time usually.In general, data be digitized and on available bandwidth spread spectrum, wherein a plurality of users can overlap on channel and can distribute unique sequence code to relative users.The user can be transmitted on same wide-band chunk of spectrum, and wherein each user's signal relies on its corresponding unique sequence code spread spectrum on whole bandwidth.It is shared that this technology can provide, and one of them above user can transmit and receive concomitantly.Sharing like this can realize that wherein user's bit stream is encoded with pseudo-random fashion and spread spectrum on the channel of non-constant width by spread spectrum digital modulation.Receiver is designed to discern the unique sequence code that is associated, and goes randomization, thereby gathers specific user's bit in the mode of unanimity.
Typical cordless communication network (for example, adopting frequency division technique, time division technique and/or sign indicating number branch technology) comprises the base station that the overlay area is provided more than and can transmit and receive mobile (for example wireless) terminal of data more than one in this overlay area.Typical base station can be launched a plurality of data flow simultaneously, is used for broadcasting, multicast and/or unicast service, and wherein data flow is to have the independent stream that receives the data of interest for portable terminal.Portable terminal in the overlay area of this base station may be to receiving from one of this base station, interested greater than one or whole data flow.Similarly, portable terminal can be to base station or other portable terminals emission data.In these systems, distribute bandwidth and other system resource by scheduler.
The method and apparatus of transmission and/or use interfere information will be convenient to effective use of bandwidth.Therefore, need new and/or improved method transmits interfere information effectively, and alternatively, need new method use the interfere information that is transmitted.
Summary of the invention
The wireless communications method and the equipment that transmit the control information that comprises interfere information have effectively been described.For example the communications device measurement interfere information of base station, for example other sector interference information.Communication equipment generates the lead code that comprises a plurality of frequency pilot signs.In certain embodiments, at least one in the described frequency pilot sign comprises interfere information.In certain embodiments, lead code be comprise lead code and a plurality of subsequent frames, for example reappear the part of the timing/frequency structure of (recurring) superframe structure.In certain embodiments, some in the subsequent frame are used for transmit traffic data.In certain embodiments, described lead code is the little adjacent block that is used to transmit the OFDM symbol of pilot signal, system configuration and/or paging information, and at least one the carrying interfere information in the described frequency pilot sign.Described communication equipment is launched described lead code, thereby to the adjacent broadcasting interfere information that accesses terminal, the described emission control decision-making that accesses terminal and can utilize these information issuings to notify.
Accessing terminal receives the lead code that comprises a plurality of pilot signals, and at least one of described pilot signal comprises interfere information.For example, in certain embodiments, described interfere information is by an above pilot tone OFDM symbols carry.Described interfere information can be by carrying with other all or part of corresponding sector interference channel of an above OFDM frequency pilot sign.In such embodiment, the pilot tone OFDM symbol of this sector of marking emitter is used to carry other sector interference information.Like this, at some but be not among whole embodiment, the OFDM symbol of the information that carrying identifies the frequency pilot sign emission source also carries the interfere information corresponding to other sectors.In one exemplary embodiment, interfere information is transmitted by the phase deviation multiplier value that uses in generating frequency pilot sign.
Access terminal and from the lead code that is received, recover interfere information, and based on the interfere information control signal emission that is recovered.In response to the interfere information that is recovered, some exemplary signal launch-control operations comprise: suppress emission, regulate transmitted power level and regulate data rate.
According to some embodiment, the illustrative methods of the communication equipment of operational example such as base station or access point comprises: measure and disturb; With the emission lead code, described lead code comprises a plurality of frequency pilot signs, and at least one in the described frequency pilot sign comprises interfere information.Example wireless communication device according to some embodiment comprises: interference measurement module; With the lead code generation module that is used to generate lead code, described lead code comprises a plurality of frequency pilot signs, and at least one in the described frequency pilot sign comprises interfere information.
The illustrative methods that accesses terminal according to the operation of some embodiment comprises: receive lead code, described lead code comprises a plurality of frequency pilot signs, and at least one of described frequency pilot sign comprises interfere information; From the lead code that is received, recover interfere information; With based on the emission of the interfere information control signal recovered.Exemplary accessing terminal according to some embodiment comprises: receiver module, be used to receive lead code, and described lead code comprises a plurality of frequency pilot signs, at least one of described frequency pilot sign comprises interfere information; Interfere information recovers module, is used for recovering interfere information from the lead code that is received; With the emission control module, be used for based on the interfere information control signal emission that is recovered.
Though various embodiment have been discussed in above summary of the invention, should be appreciated that not every embodiment must comprise identical feature, and above-mentioned feature some in certain embodiments not necessarily, but useful.A plurality of extra features, embodiment and benefit will be discussed in the following detailed description.
Description of drawings
Fig. 1 illustrates the situation of multiple access wireless communication system.
Fig. 2 A and 2B illustrate the situation of the superframe structure that is used for the multiple access wireless communication system.
Fig. 3 is the figure that the situation of the exemplary superframe lead code that is used for example wireless communications is shown.
Fig. 4 illustrates the situation of the frame structure that is used for the multiple access wireless communication system.
Fig. 5 A illustrates the situation of the forward link frame that is used for the multiple access wireless communication system.
Fig. 5 B illustrates the situation of the reverse link frame that is used for the multiple access wireless communication system.
Fig. 6 illustrates the situation of first and second communication equipments in the multiple access wireless communication system.
Fig. 7 is the figure that the situation of the exemplary superframe lead code that is used for example wireless communications is shown.
Fig. 8 is the flow chart according to the illustrative methods of the communication equipment of the operational example of each embodiment such as access point or base station.
Fig. 9 is the flow chart of the illustrative methods that accesses terminal of the operation according to each embodiment.
Figure 10 is the figure according to the example wireless communication device of for example access point of each embodiment or base station.
Figure 11 is the exemplary figure that accesses terminal according to each embodiment.
Figure 12 illustrates the figure that is used for according to transmit the various exemplary pilot symbols of interfere information with a kind of mode in certain embodiments.
Figure 13 illustrates the figure that is used for according to transmit the various exemplary pilot symbols of interfere information with another kind of mode in certain embodiments.
Embodiment
Describe each embodiment referring now to accompanying drawing, wherein identical Reference numeral is used to indicate components identical all the time.In the following description,, numerous specific detail have been provided, so that the complete understanding to one or more embodiment is provided for the purpose of explaining.Yet these embodiment obviously can implement under the situation of these specific detail not having.In other occasions, with the form of block diagram known structure and equipment are shown, with convenient description to one or more embodiment.
With reference to Fig. 1, the multiple access wireless communication system 100 according to an embodiment is shown.Multiple access wireless communication system 100 comprises a plurality of sub-districts, and for example the sub-district 102,104 and 106.In the embodiment in figure 1, each sub-district (102,104 and 106) can comprise access point (162,164,166) respectively, and access point comprises a plurality of sectors.For example, sub-district 102 comprises the first sector 102a, the second sector 102b and the 3rd sector 102c.A plurality of sectors are formed by antenna sets, and each antenna sets is responsible for accessing terminal in the part with the sub-district and is communicated by letter.In sub-district 102, antenna sets 112,114 with 116 separately corresponding to different sectors.In the sub-district 104, antenna sets 118,120 with 122 separately corresponding to different sectors.In the sub-district 106, antenna sets 124,126 with 128 separately corresponding to different sectors.
Each sub-district comprises some accessing terminal, and one or more sector communication with each access point access terminal.For example, access terminal and 130,132,134,136 communicate by letter with access point 162 with 138; Access terminal and 140,142,144,146,148 communicate by letter with access point 164 with 134; 136,148,150,152,154 communicate by letter with access point 166 and access terminal with 156.
Each sector can use the one or more of a plurality of carrier waves to operate.Each carrier wave is the part of bigger bandwidth, and communication can be operated or can be used in this system in described bigger bandwidth.Use the single sector of one or more carrier waves can have a plurality of accessing terminal, these accessed terminal during any given time interval, for example during image duration or the superframe, were scheduled on each of different carrier.Further, one or more accessing terminal can be dispatched on a plurality of carrier waves simultaneously.
Accessing terminal can be according to its ability scheduling on an above carrier wave.These abilities can be the parts of session information, described session information accesses terminal at this and generates or consult before this when attempting obtaining communication, can be by the part of the identification message of the emission that accesses terminal, perhaps set up according to any other method.In some scheme, session information can comprise the session identification token, and this token can access terminal or determines that by the transmission of portable terminal its ability generates by inquiry.
With herein access point can be the fixed station that is used for terminal communication, also can be called base station, Node B or some other term, and comprises their some or all functions.Accessing terminal is called subscriber equipment (UE), Wireless Telecom Equipment, terminal, wireless terminal, travelling carriage, mobile node, mobile phone or some other term, and comprises their some or all functions.
Describe physical sector though it should be noted that Fig. 1, promptly had the different antennae group that is used for different sectors, also can use other modes.For example, use a plurality of fixing " wave beam " of the zones of different of coverage cell in frequency domain, this can be used for alternative physical sector or combine with physical sector.
With reference to Fig. 2 A and 2B, the situation of the superframe that is used for the multiple access wireless communication system is shown.Fig. 2 A illustrates the situation of the superframe structure that is used for Frequency Division Duplexing (FDD) (FDD) multiple access wireless communication system, and Fig. 2 B illustrates the situation of the superframe structure that is used for time division duplex (TDD) multiple access wireless communication system.Super-frame preamble each superframe begin the emission, perhaps be dispersed in the middle of the superframe, for example, as lead code or in lead sign indicating number.
In Fig. 2 A and Fig. 2 B, forward link transmissions is divided into the unit of superframe.Superframe can comprise super-frame preamble and series of frames subsequently.In the FDD system, reverse link may take different frequency bandwidths with forward link transmissions, thus make on the link transmission not can, perhaps major part not can, overlapping on frequency sub-carrier arbitrarily.In the TDD system, N forward link frame and M reverse link frame definition the order forward link that before the frame that allows the emission opposite types, can launch continuously and the number of reverse link frame.The number that it should be noted that N and M can change in given superframe or between superframe.
Figure 200 of Fig. 2 A illustrates exemplary forward link superframe 201, and it comprises super-frame preamble 202 and subsequent frame (204,206,208,210,212,214,216,218,220,222,224,226,228,230,232,234,236,238,240,242,244,246,248 and 250).The initial part of another forward link superframe is illustrated, and it comprises super-frame preamble 202 ' and subsequent frame 204 '.Example frame in the illustrated blocks frequency-hopping mode, for example frame 218, comprise data division 252, control section 254 and pilot portion 256 and public guide frequency part 258.Example frame in the exemplary symbol rate frequency-hopping mode, for example frame 218, comprise data division 260, control section 262, pilot portion 264 and public guide frequency part 266.
Figure 27 0 of Fig. 2 B illustrates exemplary forward link superframe 271, it comprise super-frame preamble 272 and subsequent be used for the series of frames of forward link signaling and silence period of keeping for reverse link frame at interval (frame 274, silence period 276, frame 278, silence period 280, frame 282, silence period 284, frame 286, silence period 288, frame 290, silence period 292, frame 294, silence period 296 ..., frame 298, silence period 299).The initial part of another forward link superframe is illustrated, and it comprises super-frame preamble 272 ' and subsequent frame 274 '.Example frame in the illustrated blocks frequency-hopping mode, for example frame 286, comprise data division 275, control section 277 and pilot portion 279 and public guide frequency part 281.Example frame in the exemplary symbol rate frequency-hopping mode, for example frame 286, comprise data division 283, control section 285, pilot portion 287 and public guide frequency part 289.
In FDD and TDD system, each superframe all can comprise super-frame preamble.In certain embodiments, super-frame preamble comprises pilot channel and broadcast channel, this pilot channel comprises can be access in the pilot tone that terminal is used for channel estimating, and this broadcast channel comprises accessing terminal and can be used to the information that comprises in the forward link frame is carried out the configuration information of demodulation.Can also in super-frame preamble, comprise other capturing information, for example timing and other information that enough accesses terminal and communicate by letter, and prime power control or offset information.In other cases, some that have only above-mentioned and/or other information are included in this super-frame preamble.
In a kind of situation, following information can be included in the super-frame preamble: (i) Common Pilot Channel; (ii) broadcast channel comprises system and configuration information; (iii) the acquisition pilot channel is used to catch regularly and other information; (iv) other sector interference channel comprise the indication of sector with respect to the measured interference of other sectors.
Further, in some scheme, the message that is used for channel in the super-frame preamble can be crossed over a plurality of super-frame preamble of different superframes.This can be used for by distributing more resources to improve decoding capability to specific high-priority message.
Shown in Fig. 2 A and 2B, there is series of frames the super-frame preamble back.Each frame can comprise the OFDM symbol of identical or different number, and these symbols can constitute can be used for the plurality of sub carrier wave that transmits simultaneously on some limits the period.Further, each frame can be according to symbol rate frequency-hopping mode or the operation of piece frequency-hopping mode, and in described symbol rate frequency-hopping mode, one or more non-OFDM symbols that close on are assigned to the user on forward link or the reverse link, in described frequency-hopping mode, the user is frequency hopping in the OFDM symbolic blocks.Actual piece or OFDM symbol can be between frame frequency hopping or non-frequency hopping.
Fig. 3 is a frequency to Figure 30 0 of time, and it shows the situation of the exemplary superframe lead code 301 that is used for wireless communication system.In one or more schemes, the bandwidth that super-frame preamble is crossed over can be 1.25MHz.In other schemes, can be 2.5MHz, 5MHz or other bandwidth.
In Fig. 3, super-frame preamble 301 is carried first overhead channel, comprises the first 302 of OFDM symbol, also carries second overhead channel, comprises the second portion 304 and the OFDM symbol 306,308,310,312 and 314 of described OFMD symbol.The static parameter of first overhead channel carrying deployment scope, for example number and the superframe index of Cyclic Prefix duration, protection subcarrier.In a kind of scheme, first overhead channel is used for initially waking up.In other schemes, first overhead channel can be encoded on a plurality of superframes of for example 16 superframes.
Second overhead channel carrying enough makes the information such as the forward link information of transfer of data that is comprised in the demodulation forward link frame that accesses terminal.In other schemes, second overhead channel can comprise and relevant information such as frequency-hopping mode, pilot configuration, control channel structure, transmitting antenna.In other schemes, second overhead channel can be every a superframe emission, and wherein superframe does not comprise second overhead channel that is used for bearing call message.In other schemes, second overhead channel can carry the information about reverse link frequency-hopping mode, channel Mapping, transmitting power, power contorl parameters, access parameter etc.
By above information is provided in first and second overhead channels, system is configuration cycles prefix, number of antennas and pilot configuration etc. dynamically.Further, this can support forward link and The function of backward power control channel with expense flexibly, so can be complementary with current load.
In a kind of scheme, super-frame preamble can be used three acquisition pilot.In Fig. 3, only show two pilot tone TDM1 316 and TDM2 318.In some versions, TDM1 316 is the periodicity PN sequences with 4 cycles, and wherein per four tones are assembled in frequency domain.In specified scheme, for TDM1 316, the identical sequence of each sector transmission that accesses terminal.
In a kind of scheme, TDM2 318 usefulness depend on the sequence of time domain sector and carry out scrambling.In some scheme, as required, time domain sequences can have low peak-to-average force ratio (PAR) and allow power ascension with respect to service signal.In some scheme, sequence can be selected as having Walsh (Walsh) sequence of pseudo noise (PN) scrambling.In some scheme, use fast hadamard transform (Fast Hadmard Transform) that walsh sequence is correlated with at the receiver place.In other schemes, 512 walsh sequences can be used for the sign of 512 different sectors to be used.
Under some scheme, one or more subcarriers of TDM2 318 can be used to carry to the indication from the interference of other sectors.For example, can use the information of one or more bits to instruct the change power that accesses terminal.
In some scheme, pilot tone TDM1 316 and TDM2 318 can be used in the sector synchronously or in the synchronous basically situation, perhaps are used in the sector when asynchronous.Synchronously or under the situation of synchronous basically system, pilot tone can change between superframe and superframe.Further, different sectors can use the skew of identical sequence to provide the further improvement of ability so that distinguish the pilot tone of different sectors.Further, symbol/chip level is synchronous for realizing that this is not necessary.In some versions, in asynchronous system, it is identical that pilot tone can keep between superframe and superframe, and do not have synchronous requirement between the sector.
Can increase by the 3rd pilot tone so that expand to outside the super-frame preamble.It should be noted that the subcarrier and the character position of first overhead channel, second overhead channel and pilot tone can change, and and nonessential exactly as shown in Figure 3.Further, though take whole OFDM symbol, be not so certain, and not all subcarrier all is used for given OFDM symbol except each channel of first overhead channel all is shown as.
With reference to Fig. 4, show the situation of the channel architecture that is used for the multiple access wireless communication system.According to system design parameters, can be that the bandwidth 400 that comprises the virtual bandwidth of a plurality of discontinuous parts can be used for communication.This structure comprises one or more forward link frames 404 and reverse link frame 408, and they each all can be the part of one or more superframes of discussing with reference to Fig. 2 A and/or Fig. 2 B.
Each forward link frame 404 comprises control channel 406.Each control channel 406 can comprise the information that is used for following function associated, for example catches; Confirm; At the forward link assignment that respectively accesses terminal, for the type of message of broadcasting, multicast and clean culture, forward link assignment can difference also can be identical; The reverse link assignment that is used for respectively accessing terminal; The power of reverse link control that is used for respectively accessing terminal; And reverse link is confirmed.Should be appreciated that, in control channel 406, can support this type of more or less function.Equally, control channel 406 can be according to carrying out frequency hopping with the identical or different frequency hop sequences of the frequency hop sequences of distributing to data channel.
Each reverse link frame 408 for example comprises from 412,414 and 416 the some rl transmission that access terminal.In Fig. 4, rl transmission is depicted as piece, for example one group of continuous OFDM symbol.Should be noted that also and can use the symbol rate frequency hopping, for example discrete symbolic blocks.
In addition, each reverse link frame 408 can comprise one or more The function of backward power control channels 440, and it can comprise feedback channel; Be used for the pilot channel of reverse link channel estimation and can be included in affirmation channel in rl transmission 412,414 and 416.Each The function of backward power control channel 440 can comprise the information that is used for following function associated, the forward link and the reverse link resources of the request of for example respectively accessing terminal; Channel information for example is used for the channel quality information (CQI) of different transport-types; And from the pilot tone that accesses terminal, it can be access in the purpose that a little is used for channel estimating.Should be noted that in control channel 440 and can support more or less function.Equally, The function of backward power control channel 440 can be according to frequency hop sequences in each frame the frequency hopping identical or different with the frequency hop sequences of distributing to data channel.
In some scheme, multiplexing in order on The function of backward power control channel 440, to carry out the user, can use one or more orthogonal codes, scramble sequence to wait and separate each user and/or the different kinds of information of transmission in The function of backward power control channel 440.These orthogonal codes can be specific to the user, also can be by access point according to communication session or shorter period, and for example according to superframe, distribute to respectively and access terminal.
Correspondingly, in some scheme, some available subcarriers can be assigned as protection subcarrier and can be not modulated in the OFDM symbol, i.e. transmission of power not on these subcarriers.The number of the protection subcarrier in super-frame preamble and each frame can provide by the one or more message in control channel 406 or the super-frame preamble.
Further, in some scheme,, can access terminal at this bag is carried out combined coding, even the symbol of this bag will be launched on subcarrier in order to reduce the overhead transmission of going to particular terminal.Single like this cyclic redundancy check (CRC) can be used for this bag, and comprises the overhead transmission that must not bear cyclic redundancy check (CRC) from the transmission of the symbol of these bags.
Should be noted that bandwidth 400 can comprise discontinuous subcarrier and need not to be adjacent.In this scheme, control channel may be restricted to all parts that are less than carrier wave, place randomly between these parts or with certain deterministic mode between these parts, dispatch.
With reference to Fig. 5 A, show the situation of the forward link frame that is used for the multiple access wireless communication system.Shown in Fig. 5 A, each forward link frame 404 is further divided into two sections.First channel, promptly control channel 406, can comprise or do not comprise the sub carrier group of closing on, and have the desired amount that depends on control data and other and consider the variable sub carriers number that distributes.Rest parts 422 can be used for transfer of data usually.Control channel 406 can comprise one or more pilot channels 512 and 514.In the symbol rate frequency-hopping mode, pilot channel can occur on each OFDM symbol of each forward link frame, and needn't be included in the control channel 406 under these occasions.In these situations, signaling channel 516 and power control channel 518 can appear in the control channel 406, shown in Fig. 5 A.Signaling channel 516 can comprise the power reference and the adjusting of distribution, affirmation and/or data, control and pilot transmission on the reverse link.
It should be noted that when a plurality of transmitting antennas are used to sector transmission different transmitting antennas should have identical superframe regularly (comprising superframe index), OFDM symbol characteristic and frequency hop sequences.
Should be noted that the time, in some scheme, the channel 512,514,516 of control channel 406 can comprise the distribution identical with transfer of data with 518, for example, if transfer of data is the piece frequency hopping, piece so same or different size can be distributed to control channel 406.
With reference to Fig. 5 B, show the situation of the reverse link frame that is used for the multiple access wireless communication system.Pilot channel 522 can comprise that pilot tone is to allow access point estimation reverse link.Request channel 524 can comprise the information that allows to access terminal into ensuing reverse link and forward link, frame request resource.
Reverse link feedback channel 526 allows to access terminal feedback about channel information CQI is provided.CQI can be relevant with one or more patterns that are scheduled or the enabled mode that is used to dispatch, and is used for to the emission that accesses terminal.Exemplary pattern comprises wave beam formation, SDMA, precoding or its combination.Power control channel 528 can be with for referencial use, to allow access point generate that allowing accesses terminal to carry out the power control instruction such as the rl transmission of transfer of data.In some scheme, power control channel 528 can comprise one or more feedback channels 526.Data channel 432 can be according to symbol rate frequency hopping or the operation of piece frequency-hopping mode in different reverse link frame 408.Equally, in some scheme, the subcarrier 480 at entire belt broad edge place can be used as and certainly protects subcarrier.
Though it is multiplexing to should be noted that different channels that Fig. 5 A and 5B will form control channel 406 and 440 was depicted as in the time, and nonessential so.Form control channel 406 and can use different quadratures, accurate quadrature with 440 different channels, or scrambler, different frequency, perhaps any combination of time, sign indicating number and frequency is carried out multiplexing.
With reference to Fig. 6, show exemplary first communication equipment in the mimo system 800 or the block diagram of system 810 and exemplary second communication equipment or system 850.At first communication equipment, 810 places, the business datum of plurality of data stream is provided to emission (TX) data processor 814 from data source 812.In one embodiment, each data flow is launched on transmitting antenna separately.TX data processor 814 is based upon the specific encoding scheme that each data flow selects and comes the business datum of each data flow is formatd, encodes and interweaves, so that the data behind the coding to be provided.
Data behind the coding of each data flow can use OFDM technology and pilot data to carry out multiplexing.The data pattern that pilot data is normally known, it is handled and can be used in receiver system in known manner and sentences the estimation channel response.Then, the data behind the pilot tone that is re-used of each data flow and the coding are based upon the certain modulation schemes that this data flow selects (for example BPSK, QSPK, M-PSK or M-QAM) modulation (being sign map) are to provide modulation symbol.The data rate, coding and the modulation that are used for each data flow can be determined by the instruction that processor 830 is carried out.
Then, the modulation symbol of each data flow is provided for TX processor 820, and it can further handle modulation symbol (for example, being used for OFDM).TX processor 820 is then with N
TIndividual stream of modulation symbols offers N
TIndividual transmitter (TMTR 822a is to 822t).Each transmitter 822 receives and handles corresponding symbols streams, so that one or more analog signals are provided, and further regulates (for example, amplification, filtering and up-conversion) described analog signal, so that the signal that is suitable for after the modulation of transmitting on the mimo channel to be provided.From the N of transmitter 822a to 822t
TSignal after the individual modulation is respectively from N
TIndividual antenna 824a launches to 824t.
At second communication equipment 850 places, the signal after the modulation that is launched is by N
RIndividual antenna 852a receives to 852r, is provided for respective receiver (RCVR) 854 from the received signal of each antenna 852.Each receiver 854 (854a is to 854r) is regulated (for example, filtering, amplification and down-conversion) corresponding received signal, and signal digitalized so that sample to be provided with after regulating further handled described sample so that the symbols streams of corresponding " receiving " is provided.
Then, RX data processor 860 receives from N
RThe N of individual receiver 854
RThe individual symbols streams that receives, and handle these symbols streams so that N is provided based on specific receiver treatment technology
TThe symbols streams of individual " detecting ".The processing of RX data processor 860 is below described in further detail.Each detected symbols streams comprises the symbol as the estimation of the modulation symbol of launching at each corresponding data stream.Then, each detected symbols streams of 860 demodulation of RX data processor, deinterleaving and decoding is so that recover the business datum of each data flow.Institute's data recovered is stored in the data sink 864.The processing complementation that the TX processor 820 at the processing of RX data processor 860 and first communication equipment, 810 places and TX data processor 814 carry out.
Estimate to be used to carry out space, the processing of sky/time, adjusting power level, change modulation rate or scheme or other actions at receiver place by the channel response that RX processor 860 generates.RX processor 860 can further be estimated signal and the noise and the interference ratio (SNR) of detected symbols streams, may also have other characteristics of channel, and provide this tittle to processor 870.RX data processor 860 or processor 870 can further obtain the estimation at " operation " SNR of system.Processor 870 provides channel condition information (CSI) then, and it can comprise various various types of information about communication link and/or the data flow that received.For example, CSI can comprise operation SNR.Then, CSI can be handled by TX data processor 818, by modulator 880 modulation, is regulated to 854r by transmitter 854a, launches back first communication equipment 810 then.From the excessive data that for example comprises reverse link traffic of data source 816, can and sometimes, by TX data processor 810 receive, by modulator 880 modulation, to the 854r adjusting, be transmitted into first communication equipment 810 by transmitter 854a then.
At first communication equipment, 810 places, received by antenna 824 from the modulation signal of second communication equipment 850, be received machine 822 and regulate, by demodulator 840 demodulation, and handled, so that recover CSI by the receiver system report by RX data processor 842.The CSI that is reported is provided for processor 830 then and is used for (1) and determines to be used for the data rate of this data flow and coding and modulation scheme and (2) and generate various controls for TX data processor 814 and TX processor 820.Perhaps, CSI can be used for determining the modulation scheme and/or the code rate of transmission by processor 870, and other information.This can be provided for the transmitter of first communication equipment, and these information that its use may be quantized provide the transmission of arriving second communication equipment after a while.Can and be stored in sometimes in the data sink 844 by RX data processor 842 data recovered.Institute's data recovered can and comprise the reverse link traffic data sometimes.
At the receiver place, can use different treatment technologies to handle N
RThe individual signal that receives is so that detect N
TThe individual symbols streams that is launched.These receiver treatment technologies can be divided into two main types: (i) space with sky the time receiver treatment technology (being also referred to as balancing technique) and (ii) " serial pulverised (nulling)/equilibrium and interference eliminated " receiver treatment technology (be also referred to as " " serial interference elimination " or " serial elimination " receiver treatment technology).
Though Fig. 6 has described mimo system, same system also can be used for many single-input single-output system (SISO system)s, wherein a plurality of transmitting antennas, and for example the transmitting antenna on the base station is launched one or more symbols and is flow to individual antenna equipment, for example travelling carriage.Equally, also can be to use the single single input aerial system that outputs to about the described same way as of Fig. 6.
Transmission technology described herein can be realized by multiple mode.For example, these technology can use hardware, firmware, software or its combination to realize.Realize for hardware, the processing unit at the first communication equipment place can be at one or more ASIC(Application Specific Integrated Circuit) (ASIC), digital signal processor (DSP), digital signal processing appts (DSPD), programmable logic device (PLD), field programmable gate array (FPGA), processor, controller, microcontroller, microprocessor, electronic device, be designed to carry out other electronic units of function described herein, or realizes in its combination.The processing unit at second communication equipment place also can be realized in one or more ASIC, DSP, processor etc.
Realize that for software described transmission technology may be implemented as the module (for example, program, function etc.) of carrying out function described herein.Software code can be stored in the memory (for example, the memory among Fig. 6 832 or 872) and by processor (for example processor 830 or 870) and carry out.Memory can also can be realized in the processor outside in the inner realization of processor.
Should be noted that the notion of channel herein refers to can be by the information or the transport-type of the access point or the emission that accesses terminal, and does not require or use fixing or predetermined block of sub-carriers, time period or other resources that is exclusively used in this transmission.
In some exemplary embodiment, each FL superframe comprise super-frame preamble with and subsequent a series of FL frame (seeing Fig. 2 A and Fig. 2 B).Fig. 7 be frequency on the longitudinal axis 702 to the Figure 70 0 of the OFDM notation index on the transverse axis 704, it comprises exemplary superframe lead code 706.Exemplary superframe lead code 706 comprises 8 OFDM symbols (708,710,712,714,716,718,720,722), is used for size and is 512 and bigger FFT.As shown in Figure 7, these symbols are indexed as 0 to 7.
The exemplary superframe lead code in certain embodiments, comprises 16 OFDM symbols, is used for the situation of 256 FFT.Another exemplary superframe lead code comprises 32 OFDM symbols, is used for the situation of 128 FFT.
For simplicity, below describing at size is 512 and bigger FFT.For other situation, the channel of respectively forming of super-frame preamble carries out convergent-divergent (repeating in time) according to the appropriate factor of comparing with the situation of 512 FFT (factor is 2 under the situation of 256 FFT, and the factor is 4 under the situation of 128 FFT).
Last three OFDM symbols (718,720,722) (being indexed as 5,6 and 7 symbol) in the super-frame preamble 706 are the TDM pilot tones that is used for initial acquisition.These symbols also can be called TDM pilot tone 1, TDM pilot tone 2 and TDM pilot tone 3.Wherein first forms bid (F-ACQCH), and latter two is reused, so that launch other sector interference channel (F-OSICH).At OFDM symbol 7
722) go up emission TDM pilot tone 1.On OFDM symbol 5 and 6 (718,720), launch TDM pilot tone 2 and 3 respectively.
Example T DM pilot tone 1 is described now.TDM pilot tone 1 is the OFDM symbol that comprises the time domain PN sequence with 4 cycles.The structure of TDM pilot tone 1 depends on bandwidth and is lower than 5MHz or is higher than 5MHz.
In bandwidth 5MHz or deployment still less, this OFDM symbol passes through N
FFT/ 4 length of PN sequence are carried out FFT and are constructed with per four subcarriers of FFT value assembling (getting rid of the protection subcarrier).Carrying out IFFT and additional Cyclic Prefix and windowing interval then, just looks like such in each other OFDM symbol.The PN sequence that is used for this purpose does not rely on the sector, therefore can not use TDM pilot tone 1 identification sector.Yet the PN sequence does not rely on bandwidth.Different PN sequences is used for each of following three kinds of situations: BW≤1.25MHz, 1.25MHz＜BW≤2.5MHz and 2.5MHz＜BW≤5MHz.
In being higher than the bandwidth of 5MHz, bandwidth is divided into the section that respectively has the 5MHz bandwidth.Emission TDM pilot tone 1 on the section of sector in any given superframe.Yet the section that the sector is launched pilot tone thereon changes between superframe.Differently select section with two kinds of different synchronous modes.The time domain sequences that is used to modulate does not rely on the sector yet and depends on the total bandwidth and the index of section.
Exemplary TDM pilot tone 2 and 3 is described now. TDM pilot tone 2 and 3 is used for carrying out sector identification after using TDM pilot tone 1 to catch one or more strong paths. TDM pilot tone 2 and 3 is used the time domain sequences structure, this time domain sequences be one group by one in 1024 walsh sequences after the scrambling of PN sequence.512 elements that walsh sequence begins are used to construct TDM pilot tone 2, and back 512 elements are used to construct TDM pilot tone 3.Walsh sequence depends on the Pilot PN of sector, and does not change between superframe and superframe.In 1024 sequences, 512 sequences are that half synchronous mode keeps, and 512 sequences in addition are that synchronous mode keeps.The PN sequence depends on system bandwidth under the situation of the deployment of bandwidth≤5MHz, and in bandwidth〉depend on system bandwidth and section index under the situation of the deployment of 5MHz.It is identical with the section of launching TDM pilot tone 1 thereon with 3 section to launch TDM pilot tone 2 thereon.
Synchronous mode is described now.System supports two kinds of patterns, and promptly half synchronously with asynchronous, TDM pilot tone generation difference in both cases.
Half synchronous mode is described now.For some application, for example range finding (ranging), it is useful detecting weak especially sector.Therefore, it is important allowing at an enterprising line correlation of above super-frame preamble.In order to obtain processing gain on an above super-frame preamble, it is very favourable that interference signal (being the TDM pilot tone of adjacent sectors) changes between a super-frame preamble and next super-frame preamble.In order to make this available, for each sector definition is called auxiliary quantity PilotPhase, that change between superframe.PilotPhase is 9 bit quantity, and it is defined as PilotPhase=(PilotPN+SuperframeIndex) mod512, and wherein SuperframeIndex is the count value that increases progressively to next superframe from a superframe, and is defined globally in each sector.PilotPhase is used to two TDM pilot tones to generate scramble sequence.Further, at BW〉in the deployment of 5MHz, launch the section of TDM pilot tone thereon and selected by pseudorandom ground as the function of PilotPhase.
When the skew of identical sequence was used in different sectors, pilot configuration had the synchronous of some degree between two sectors.Or rather, if all probable values of PilotPN all are possible, any two sectors of this structural requirement are synchronized within half superframe so, but are not in symbol level or chip level.Otherwise, can infer, two sectors with different PilotPN can be launched identical acquisition pilot (identical PN sequence) simultaneously.This pattern can, and really sometimes, be used to improve performance (reduce capture time, fast handoff sectors, estimate to disturb etc.).
Asynchronous mode is described now.In some cases, can not accurately synchronous two sectors.In order to support this scene, there is a kind of pattern not have synchronous requirement in the system.In this pattern, the TDM pilot tone is directly used the PilotPN scrambling, rather than uses auxiliary quantity PilotPhase.For bandwidth≤ 5
The system of MHz, the TDM pilot tone is identical between superframe and superframe.For bandwidth〉system of 5MHz, the TDM pilot tone is the circulation of certainty ground within one group of available section.
Exemplary acquisition procedure is described now.Preceding 5 OFDM symbols (708,710,712,714,716) in the super-frame preamble are used to carry two primary broadcast channels, i.e. F-pBCH0 and F-pBCH1.First OFDM symbol 708 comprises F-pBCH0 part 724 and F-pBCH1 part 726.Second to the 5th OFDM symbol (710,710,712,714,716) carrying F-pBCH1 information.These channel bearings AT needed the configuration information that has before demodulation PHY frame.In addition, F-pBCH1 channel bearing call information also.
In this exemplary embodiment, F-pBCH0 wraps on 16 superframes and is encoded, and occupies that 1/4 OFDM symbol in each super-frame preamble---this is very little expense.F-pBCH0 carries the static parameter in the whole deployment, for example Cyclic Prefix duration, protection number of sub carrier wave, and superframe index, and needs when initially waking up only.
F-pBCH1 wraps on the single superframe and is encoded, and occupies 43/4 OFDM symbol in each super-frame preamble.The bandwidth cost of this channel is about 2%.The enough information of F-pBCH1 carrying make AT can demodulation from the FL data of PHY frame, described information is for example about the information of FL frequency hopping pattern, pilot configuration, control channel structure, transmitting antenna etc.These information are launched every a superframe; Other superframe is as bearing call, for example Quick paging.Remaining Overhead uses the routine data channel radio in the predetermined superframe, and this carrying is about the information of RL frequency hopping pattern, channel Mapping, transmitting power, power contorl parameters and access parameter etc.
These channels make flexibly physical layer possibility that become, the flexible configuration of permission Cyclic Prefix, number of antennas, pilot configuration etc.They also support to have the FL and the RL control channel of flexible expense, and this makes described expense to be complementary with active user's load.Equally, can enable or close such as the feature of sub-band scheduling, FFR etc.
When initially waking up, AT at first uses TDM pilot detection sector and reaches the time and Frequency Synchronization.In half synchronous mode, AT is known the value of PilotPhase variable at the end in this stage, and in asynchronous mode, AT is known the value of PilotPN variable at the end in this stage.Then, AT continues demodulation F-pBCH0 and F-pBCH1 channel.The F-pBCH0 channel bearing low 9 bits of SuperframeIndex, this makes AT can find the value (PilotPN=PilotPhase-SuperframeIndex mod 512) of PilotPN under half synchronous situation.Therefore, in half synchronous mode and asynchronous mode, at this stage end, AT is known PilotPN and SuperframeIndex variable, and these two variablees one are used from and aid in the various randomizer of using when generating the FL waveform (for example frequency hopping, scrambling etc.).
In one embodiment, (the ternary amount of (F-OSICH) carrying, this three-state amount is modulated to the phase place on TDM pilot tone 2 and 3 to other sector interference channel.Because finish in case catch, the TDM pilot waveform is exactly known, so the overlapping performance degradation that can not cause OSICH.One of characteristic is that it is used in by AT in the sector of closing on, promptly should be able to be with low-down SNR decoding.This is by providing very large spreading gain to realize for this channel, and promptly whole OFDM symbol is used as the information of emission less than dibit, and perhaps two OFDM symbols are as the information of emission less than dibit.
Fig. 8 is the flow chart 900 according to the illustrative methods of the communication equipment of each embodiment operational example such as access point or base station.Operation starts from step 902, and wherein communication equipment powers on and initialization, advances to step 904 then.In step 904, communications device measurement disturbs.Operation advances to step 906 from step 904.
In step 906, communication equipment generates lead code, for example super-frame preamble.Step 906 comprises substep 912 and 913.In certain embodiments, step 906 comprises substep 910, and wherein communication equipment generates the one or more OFDM symbols corresponding to one or more broadcast channels.Operation advances to substep 912 from substep 910.In other embodiments, step 906 does not comprise the substep 910 as a part.
At substep 912, communication equipment generates first pilot tone at least some subcarriers of an OFDM frequency pilot sign.Operation advances to substep 913 from substep 912.At substep 913, communication equipment generates the 2nd OFDM frequency pilot sign that comprises interfere information.Substep 913 comprises substep 914 and one or more substep 922 and 923.In substep 914, communication equipment generates second pilot tone at least some subcarriers of the 2nd OFDM frequency pilot sign.In certain embodiments, generate second pilot tone and comprise that use is applied to the scramble sequence of first pilot tone.In certain embodiments, generating second pilot tone comprises with skew and multiply by the scramble sequence that is used to generate second pilot tone.In certain embodiments, described skew depends on interfere information.In certain embodiments, described skew has unit module, and for example, the form of described skew is exp (j* θ).
In certain embodiments, substep 914 comprises substep 916,918 and 920.At substep 916, communication equipment determines that it still is half synchronous mode of operation that this communication equipment is in the asynchronous operation pattern.If communication equipment is in asynchronous mode operation, then operate from substep 916 and advance to substep 918, in substep 918, communication equipment generates second pilot tone according to first function at least some subcarriers of the 2nd OFDM frequency pilot sign.Yet, if communication equipment is in the operation of half synchronous mode, operate so from substep 916 and advance to substep 920, communication equipment generates second pilot tone according to second function that is different from described first function at least a portion subcarrier of the 2nd OFDM frequency pilot sign in step 920.
Operation advances to substep 922 or substep 923 from substep 914.In substep 922, communication equipment generates interfere information at least some other subcarriers of the 2nd OFDM frequency pilot sign.In certain embodiments, at least two symbols are used in and transmit interfere information in the lead code.At substep 923, communication equipment merges to interfere information in described the 2nd OFDM frequency pilot sign by phase deviation being applied to a plurality of subcarriers.For example, in certain embodiments, different phase deviation multiplier values is associated with different interference ranks to be transmitted.In certain embodiments, come the application phase skew, comprise the frequency pilot sign of interfere information with generation by the incoming symbol that does not comprise interfere information being carried out the phase place multiply operation.Operation advances to step 906 from step 908.
In step 908, the lead code that the communication equipment emission is generated, described lead code comprises a plurality of frequency pilot signs, at least one in the described frequency pilot sign comprises interfere information.In different embodiment, the emission lead code further comprises launches at least one symbol corresponding to the broadcast channel that is used for the transfer system configuration information as the part of described lead code.In certain embodiments, the emission lead code comprises that an OFDM frequency pilot sign that will be generated and the 2nd OFDM frequency pilot sign that is generated launch as the adjacent OFDM symbol in the described lead code.In certain embodiments, one of described first and second OFDM frequency pilot signs are last the OFDM symbols in the lead code.Operation advances to step 904 from step 908, in step 904, and the communications device measurement interfere information.
In certain embodiments, the frequency pilot sign in the lead code comprises and is used at least one acquisition pilot of timing acquisition and sector identification.In different embodiment, lead code comprises than the more symbol of symbol that transmits interfere information comes the transfer system configuration information.
In certain embodiments, the symbol that is used in the main body of the symbol in the superframe prefix and described superframe to transmit as the data of the part of frame comprises identical every symbol tone.In certain embodiments, be used to transmit symbol as the data of the part of frame in the main body of the symbol in the super-frame preamble than described superframe and comprise still less every symbol tone.
Fig. 9 is the flow chart 1000 of the illustrative methods that accesses terminal of the operation according to each embodiment.Operation starts from step 1002, and wherein accessing terminal powers on and initialization, advances to step 1004 then.In step 1004, the reception lead code that accesses terminal, described lead code comprises a plurality of frequency pilot signs, at least one in the described frequency pilot sign comprises interfere information.The lead code that is received for example is a super-frame preamble.In some such embodiment, the symbol that is used in the symbol in the super-frame preamble and the main body of described superframe to transmit as the data of the part of frame comprises identical every symbol tone.In certain other embodiments, be used to transmit symbol as the data of the part of frame in the main body of the symbol in the super-frame preamble than described superframe and comprise still less every symbol tone.In certain embodiments, the lead code that is received comprises, and to be used for the symbol of transfer system configuration information more than the symbol that is used for transmitting interfere information.Operation advances to step 1006 from step 1004.
In step 1006, access terminal and use at least one frequency pilot sign that comprises in the described lead code to carry out the timing acquisition operation.Operation advances to step 1008 from step 1006.In step 1008, access terminal according at least one frequency pilot sign that comprises interfere information included in the lead code that is received the sector of the lead code that the identification emission is received.Operation advances to 1010 from step 1008.
In step 1010, access terminal and from the lead code that is received, recover interfere information.In certain embodiments, at least two symbols in the described lead code are used for transmitting interfere information, recover interfere information and comprise from least two symbols and recover interfere information from the lead code that is received.In different embodiment, recover interfere information and comprise that use is applied to first pilot tone and carries out descrambling operation with the scramble sequence that generates second pilot tone.Step 1010 comprises substep 1011, wherein accesses terminal to use preamble structure information to determine to comprise described at least one frequency pilot sign position in the lead code that is received of interfere information.
In certain embodiments, the modulation symbol values of the one or more subcarriers by frequency pilot sign transmits for example interfere information of other sector interference information, determines that interfere information comprises the interfere information of these modulation symbols of demodulation sign indicating number to obtain to be transmitted.In certain embodiments,, for example be applied in, transmit for example interfere information of other sector interference information to generate the phase place multiplier of frequency pilot sign by the phase place multiplier.In some such embodiment, from the lead code that is received, recover the interfere information that interfere information comprises definite phase multiplication numerical value that transmits and determines to be transmitted, the interference rank that is for example transmitted, described interference rank corresponding to, for example be mapped to the phase multiplication numerical value that is transmitted.
Operation advances to step 1012 from step 1010, wherein accesses terminal based on the interfere information control signal emission that is recovered.Example based on the emission of the interfere information control signal recovered comprises: suppresses emission, control and/or changes emission rate, control and/or change emitted power level, control and/or the code rate, control and/or the change that change data rate, the control of emission and/or change emission transmit employed self-correcting code, control and/or change operator scheme, and/or control and/or change employed expense control signaling amount.
Figure 10 is the figure according to the example wireless communication device 1100 of for example access point of each embodiment or base station.Example wireless communication device 1100 comprises wireless receiver module 1102, transmitting set module 1103, processor 1106, Network Interface Module 1108 and memory 1110, they connect together by bus 1112, and each element can pass through bus 1112 swap datas and information.Memory 1110 comprises routine 1118 and data/information 1120.Processor 1106, CPU for example, the routine 1118 in the execute store 1110 is also used data/information 1120 in the memory 1110, so that the operation of control Wireless Telecom Equipment 1110, and manner of execution, for example method of the flow chart 900 of Fig. 8.
Wireless receiver module 1102, for example the OFDM receiver is connected to reception antenna 1114, and Wireless Telecom Equipment comprises so as to measuring interference signals by described reception antenna 1114 received signals.Transmitting set module 1104, for example the OFDM transmitter is connected to transmitting antenna 1116, and Wireless Telecom Equipment is by described transmission antennas transmit signal.The lead code that 1104 emissions of transmitting set module are generated.Transmitting set module 1104 is also launched forward link frame, for example comprises the descending chain circuit frame of business datum and/or control data.In certain embodiments, transmitting set module 1104 is launched an OFDM frequency pilot sign and the 2nd OFDM frequency pilot sign as adjacent OFDM symbol in such as the lead code of super-frame preamble.In certain embodiments, frequency pilot sign is last symbol of launching in the lead code.
In certain embodiments, the same antenna is used as and transmits and receives.In certain embodiments, a plurality of antennas and/or a plurality of antenna element are used to receive.In certain embodiments, a plurality of antennas and/or a plurality of antenna element are used to emission.In certain embodiments, at least some of same antenna or antenna element are as transmitting and receiving.In certain embodiments, Wireless Telecom Equipment 1100 uses the MIMO technology.
Network Interface Module 1108 is connected to other network nodes, for example other access point/base stations, AAA node, home agent node etc., and/or be connected to the internet by network link 1109.
Routine 1118 comprises interference measurement module 1122, lead code generation module 1124 and pilot tone generate pattern control module 1130.Lead code generation module 1124 comprises broadcast channel symbol generation module 1126 and frequency pilot sign generation module 1128.Frequency pilot sign generation module 1128 comprises the first pilot tone generation module 1132, the second pilot tone generation module 1134 and interfere information generation module 1136.
Data/information 1120 comprise measured interfere information 1138, system configuration information 1140, the broadcast channel symbol 1142 that is generated, first pilot tone 1144 that is generated, second pilot tone 1146 that is generated, the interfere information to be transmitted 1148 that is generated, the lead code 1150 that is generated, regularly/frequency structure information 1152, scramble sequence information 1156, offset information 1158 and pattern information 1160.Regularly/frequency structure information 1152 comprises lead code definition information 1154.Regularly/frequency structure information 1152 comprises the information of identification forward link structure and reverse link structure, for example comprises the forward link superframe of lead code and frame.Fig. 3 and Fig. 7 illustrate exemplary preamble structure.The information that defines this structure can be included in the information 1154.Pattern information 1160 comprises the information that is used to discern the manipulable alternative patterns of Wireless Telecom Equipment, the information of for example asynchronous operation pattern and half synchronous mode of operation, and the information that is used to discern current operator scheme.In certain embodiments, the Wireless Telecom Equipment 1100 of base station for example changes and is used for the pilot signal that the lead code as described mode function generates and generates, for example, so that adapt to when adjacent base station is asynchronous when launching and situation during when adjacent base station half synchronized transmissions.
Interference measurement module 1122 is measured and is disturbed.In certain embodiments, interference measurement module 1122 is other sector interference measurement modules, and it measures the interference about the sector different with the sector of launching the lead code that is generated.Measured interfere information 1138 is the output of interference measurement module 1122.
Lead code generation module 1124 generates lead code, the lead code 1150 that is for example generated, and described lead code comprises a plurality of frequency pilot signs, wherein at least one described frequency pilot sign comprises interfere information.
At least one symbol that broadcast channel symbol generation module 1126 generates corresponding to the broadcast channel that is used for the transfer system configuration information.In certain embodiments, support a plurality of broadcast channels.In some such embodiment, at least one symbol comprises a part and first broadcast channel of second broadcast channel.
In different embodiment, lead code generation module 1124 generates the pilot tone as the acquisition pilot that is used for the identification of at least one timing acquisition and sector.In certain embodiments, to be used for the symbol of transfer system configuration information in the lead code that is generated more than the symbol that is used for conducted interference information for lead code generation module 1124.In certain embodiments, the lead code that is generated is a super-frame preamble, and at least two symbols are used in and transmit interfere information in the lead code.
Frequency pilot sign generation module 1128 generates the frequency pilot sign of the lead code 1150 that is generated.The first pilot tone generation module 1132 generates first pilot tone at least some subcarriers of an OFDM frequency pilot sign.The second pilot tone generation module 1134 generates second pilot tone at least some subcarriers of the 2nd OFDM frequency pilot sign.Interfere information generation module 1136 generates interfere information at least some other subcarriers of the 2nd OFDM frequency pilot sign.The included a plurality of frequency pilot signs of lead code comprise first and second pilot tones that generated.
In different embodiment, the second pilot tone generation module 1134 uses the scramble sequence that puts on first pilot tone that is generated by the first pilot tone generation module 1132 to generate second pilot tone.In certain embodiments, the second pilot tone generation module 1134 comprises offset module 1135, and it is used for applying skew to the scramble sequence that is used to generate second pilot tone.In certain embodiments, described skew depends on interfere information.In different embodiment, described skew has unit module, and for example, the form of described skew is exp (j* θ).
The pilot tone generate pattern control module 1130 control second pilot tone generation module 1134 the given time with a kind of operation mode in first operator scheme and second operator scheme, described first operator scheme is corresponding to the asynchronous operation pattern of communication equipment, described second operator scheme is corresponding to half synchronous mode of operation of communication equipment, and the described second pilot tone generation module 1134 differently generates second pilot tone during first operator scheme and second operator scheme.
Figure 11 is according to access terminal 1200 figure of each embodiment exemplary.Exemplary accessing terminal 1200 comprises wireless receiver module 1202, transmitting set module 1204, processor 1206, user I/O equipment 1208 and memory 1210, these elements connect together by bus 1212, and can pass through bus 1212 swap datas and information.Memory 1210 comprises routine 1218 and data/information 1220.Processor 1206, CPU for example, the routine 1218 in the execute store 1210 is also used data/information 1220 in the memory 1210,1200 the operation so that control accesses terminal, and implementation method, for example method of the flow chart 1000 of Fig. 9.
In certain embodiments, the same antenna is as transmitting and receiving.In certain embodiments, a plurality of antennas and/or a plurality of antenna element are used for receiving.In certain embodiments, a plurality of antennas and/or a plurality of antenna element are used for emission.In certain embodiments, at least some of same antenna or antenna element are as transmitting and receiving.In certain embodiments, access terminal and 1200 use the MIMO technology.
User I/O equipment 1208 comprises, for example microphone, keyboard, keypad, switch, camera, loud speaker, display etc.User I/O equipment 1208 allow to access terminal 1200 user input data/information, visit dateout/information, and access terminal at least some functions of 1200 of control are for example initiated and communication session such as another peer node that accesses terminal.
Data/information 1220 comprises the lead code 1234 that is received, the interfere information 1236 that is recovered, the system configuration information of being recovered 1238, timing information 1240, sector auxiliary information 1242, timing and frequency structure information 1244, disturbs recovering information 1249 and emission control information 1250.Regularly/frequency structure information 1244 comprises preamble structure information 1246 and the frame information of being stored 1248.The preamble structure information 1246 of being stored comprises the information of the position of at least one pilot tone that comprises interfere information in the lead code that indication receives.Fig. 3 and Fig. 7 are some examples of preamble structure, and the information that defines this structure can be included in the information 1246.
Interfere information recovers module 1222 and recover interfere information from the lead code that is received.The interfere information 1236 that is recovered is the output that recovers module 1222.In certain embodiments, at least two symbols are used for transmitting interfere information in the lead code that is received, and described interfere information recovers module and recover interfere information from least two symbols.In different embodiment, disturb recovery module 1222 to use the preamble structure information 1246 of being stored to determine to be included in the position of at least one frequency pilot sign in the lead code that is received, that comprise information.
In certain embodiments, interfere information recovers module 1222 and comprises descrambling module 1224, and its use is applied to first pilot tone and carries out descrambling operation with the scramble sequence that generates second pilot tone.In different embodiment, interfere information recovers module 1222 and comprises phase module 1225.Phase module 1225 is determined the interfere information that is transmitted, one of for example a plurality of predetermined interference ranks according to the measured phase deviation of the frequency pilot sign that is received in the lead code that is received.In certain embodiments, phase module 1225 is also measured the phase place of the frequency pilot sign that is received, and in other embodiment, the phase deviation measurement module of separation, for example be included as the part that interfere information recovers module 1222 or wireless receiver module 1202, measure described phase deviation.
Timing acquisition module 1228 uses at least one frequency pilot sign that comprises in the lead code that is received to carry out the timing acquisition operation.Timing information 1240, for example timing slip adjustment is the output of timing acquisition module 1228, this information is received one or more uses of machine module 1202 and transmitter module 1204.
Which sector transmission is sector identification module 1230 discern the lead code that received from according to being included at least one frequency pilot sign in the lead code that is received, that comprise interfere information.Sector auxiliary information 1242, the sector, source of the lead code that receives 1234 that for example discerned, described is the output of identification module 1230.
System information is recovered module 1232 according to some the non-frequency pilot sign recovery system configuration informations 1238 in the lead code that is received.In certain embodiments, the symbol that the lead code 1234 that is received is used for the transfer system configuration information is more than the symbol that is used to transmit interfere information.
In certain embodiments, the lead code that is received is a super-frame preamble.In certain embodiments, the symbol that is used in the main body of the symbol in the super-frame preamble and described superframe to transmit as the data of the part of frame comprises identical every symbol tone.In some other embodiment, be used to transmit symbol as the data of the part of frame in the main body of the symbol in the super-frame preamble than described superframe and comprise still less every symbol tone.
Disturb recovering information 1249 to comprise by disturbing the information that module 1222 is used the interfere information 1236 that is resumed with acquisition of recovering.Exemplary interference recovering information 1249 comprises: be identified in the information that the frequency pilot sign that is used for carrying interfere information is used for the subcarrier of bearing modulation symbols; Be used for recovering the decoding and/or the demodulating information of interfere information (the interference rank that for example is transmitted) according to one or more modulation symbols of the frequency pilot sign that carries interfere information; And/or phase deviation is mapped to the information of interfere information, for example a plurality of interference ranks are mapped to the information of different phase deviation.
Figure 12 is the figure that the different exemplary pilot symbols that are used to transmit interfere information in certain embodiments are shown.In the example of Figure 12, the frequency pilot sign that is used to transmit interfere information comprises some subcarriers by the transmission pilot tones of arrow indication, some are used to transmit the subcarrier of the modulation symbol of interference channel by the subcarrier with null value (null) painstakingly of NULL indication and some.Exemplary frequency pilot sign 1302 is second frequency pilot signs from the lead code of sector A (for example first base station), transmits the interfere information that rank 1 is disturbed in indication by modulation symbol values I1A and I1B.Exemplary frequency pilot sign 1304 is second frequency pilot signs from the lead code of sector A (for example first base station), transmits the interfere information that rank 2 is disturbed in indication by modulation symbol values I2A and I2B.Exemplary frequency pilot sign 1304 is second frequency pilot signs from the lead code of sector A (for example first base station), transmits the interfere information that rank 3 is disturbed in indication by modulation symbol values I3A and I3B.
Exemplary frequency pilot sign 1308 is second frequency pilot signs from the lead code of sector B (for example second base station), transmits the interfere information that rank 1 is disturbed in indication by modulation symbol values I1A and I1B.Exemplary frequency pilot sign 1310 is second frequency pilot signs from the lead code of sector B (for example second base station), transmits the interfere information that rank 2 is disturbed in indication by modulation symbol values I2A and I2B.Exemplary frequency pilot sign 1312 is second frequency pilot signs from the lead code of sector B (for example second base station), transmits the interfere information that rank 3 is disturbed in indication by modulation symbol values I3A and I3B.
In this exemplary embodiment, the resource that is used for pilot signal in the position of frequency pilot sign as the function of sector and change.In addition, transmitting the used position of resource in frequency pilot sign of the modulation symbol of interfere information changes as the function of sector.
Figure 13 is the figure that the different exemplary pilot symbols that are used to transmit interfere information in certain embodiments are shown.In the example of Figure 13, the frequency pilot sign that is used to transmit interfere information comprises some subcarriers by the transmission pilot tones of arrow indication, and some are by the subcarrier with null value painstakingly of NULL indication.In the example of Figure 14, the frequency pilot sign that is used to transmit interfere information comprises the phase deviation of disturbing rank corresponding to difference.Different phase deviation is by the direction indication of carrier signal arrow.Exemplary frequency pilot sign 1402 is second frequency pilot signs from the lead code of sector A (for example first base station), transmits the interfere information of indication interference rank 1 by the phase pushing figure of 0 degree.Exemplary frequency pilot sign 1404 is second frequency pilot signs from the lead code of sector A (for example first base station), transmits the interfere information of indication interference rank 2 by the phase pushing figure of 120 degree.Exemplary frequency pilot sign 1406 is second frequency pilot signs from the lead code of sector A (for example first base station), transmits the interfere information of indication interference rank 3 by the phase pushing figure of 240 degree.
Exemplary frequency pilot sign 1408 is second frequency pilot signs from the lead code of sector B (for example second base station), transmits the interfere information of indication interference rank 1 by the phase pushing figure of 0 degree.Exemplary frequency pilot sign 1410 is second frequency pilot signs from the lead code of sector B (for example second base station), transmits the interfere information of indication interference rank 2 by the phase pushing figure of 120 degree.Exemplary frequency pilot sign 1412 is second frequency pilot signs from the lead code of sector B (for example second base station), transmits the interfere information of indication interference rank 3 by the phase pushing figure of 240 degree.
In this exemplary embodiment, the resource that is used for pilot signal in the position of frequency pilot sign as the function of sector and change.The phase place relevant with frequency pilot sign changes as other function of interference level that is transmitted.
Some embodiment comprise scrambling, comprise the part of the frequency pilot sign of interfere information as generation.Such embodiment can be used as the distortion with reference to Figure 12 and 13 exemplary embodiments of describing.For example, in certain embodiments, input frequency pilot sign experience scramble sequence, and carried out multiplication by the phase deviation multiplier value, thereby generate the frequency pilot sign that transmits interfere information, and interfere information (for example other sector interference information) transmits by employed, selecteed phase deviation multiplier value.
The description to disclosed embodiment before providing is so that those skilled in the art make or use various features.Various modifications to these embodiment are conspicuous for those skilled in the art, and the General Principle that herein limits can be applied to other embodiment, and do not break away from spirit or scope.Therefore, various embodiment are not that intention is subject to the embodiment that illustrates herein, but according to principle and novel feature the wideest consistent scope disclosed herein.
In different embodiment, node described herein uses one or more modules to realize, to carry out the step corresponding to one or more methods of this scheme, for example signal processing, message generate and/or step of transmitting.So in certain embodiments, various features use module to realize.Such module can realize with software, hardware or combination thereof.Many can the use such as the machine-executable instruction of software in method described above or the method step realized, described machine-executable instruction is included in the machine readable media such as memory devices, for example RAM, floppy disk, CD, DVD etc., so that control machine, for example have or do not have the all-purpose computer of additional hardware, for example in an above node, realize in the method described above all or part of.Accordingly, wherein, this scheme is at the machine readable media that comprises machine-executable instruction, and described instruction makes machine, and for example processor and related hardware are carried out the one or more steps in the said method.
In different embodiment, the node of Miao Xieing uses one or more modules to realize herein, and to carry out the step corresponding to one or more methods of this scheme, for example signal processing, message generate and/or step of transmitting.Some exemplary steps comprise the emission connection request, receive connection response, upgrade indication with the one group of information of accessing terminal with access point that activation is connected, transmit connection request, transmit connection response, determine resource allocation, request resource, new resources etc. more.In certain embodiments, different features use module to realize.Such module can realize with software, hardware or combination thereof.Many can being used such as the machine-executable instruction of software in method described above or the method step realized, described machine-executable instruction is included in the machine readable media such as memory devices, for example RAM, floppy disk, compact disk, DVD etc., so that control machine, for example have or do not have the all-purpose computer of additional hardware, in for example one or more nodes, realize in the method described above all or part of.Accordingly, wherein, this scheme is at the machine readable media that comprises machine-executable instruction, and described instruction makes machine, and for example processor and related hardware are carried out the one or more steps in the said method.
In certain embodiments, for example be such as accessing terminal and/or one or more processors of one or more equipment of the communication equipment of access point, CPU for example is configured to carry out the step that is described to the method carried out by communication equipment.The configuration of described processor can be disposed and realize by using one or more modules (for example software module) processor controls, and/or realizes by comprising that in processor hardware (for example hardware module) described step of execution and/or processor controls dispose.Correspondingly, some among the embodiment but be not all at the equipment with processor for example have the communication equipment of processor, and described processor comprises the module corresponding to each step of the various described methods of being carried out by the equipment that comprises this processor.At some but be not among whole embodiment, for example the equipment of communication equipment comprises the corresponding module of each step with the various described methods of being carried out by the equipment that comprises this processor.Described module can use software and/or hardware to realize.
Consider above description, the multiple extra distortion of said method and equipment be it will be apparent to those skilled in the art that.This distortion is regarded as being within the scope.The method and apparatus of different embodiment can, and in different embodiment really, the communication technology that is used for CDMA, OFDM (OFDM) and/or various other types, these technology can be used for providing wireless communication link between access node and mobile node.In certain embodiments, access node is implemented as the base station, and it uses OFDM and/or CDMA and mobile node to set up communication link.In different embodiment, described mobile node may be implemented as notebook computer, personal digital assistant (PDA) or other comprise the portable set of receiver/transmitter circuitry and logic and/or routine, to realize the method for various embodiment.
Claims (77)
1, a kind of method of apparatus for operating communication, this method comprises:
Measure and disturb; With
The emission lead code, described lead code comprises a plurality of frequency pilot signs, at least one in the described frequency pilot sign comprises interfere information.
2, according to the process of claim 1 wherein that the emission lead code further comprises:
To launch as the part of described lead code with corresponding at least one symbol of the broadcast channel that is used for the transfer system configuration information.
3, according to the process of claim 1 wherein that described frequency pilot sign comprises at least one the acquisition pilot that is used for the identification of timing acquisition and sector.
4, according to the method for claim 2, the symbol that is used for the transfer system configuration information that wherein said lead code comprises is more than the symbol that is used to transmit interfere information.
5, according to the method for claim 2, wherein said lead code is a super-frame preamble.
6,, be used to transmit as every symbol tone of the symbol of the data of the part of frame few in the main body of the described superframe of every symbol pitch ratio of the described symbol in the wherein said super-frame preamble according to the method for claim 5.
7, according to the method for claim 2, wherein at least two symbols are used for transmitting interfere information in described lead code.
8, according to the method for claim 7, wherein said measurement is disturbed and is comprised:
Measure the interference of the sector different with the sector of this lead code of emission.
9, according to the method for claim 1, further comprise, before the described lead code of emission:
In at least some subcarriers of an OFDM frequency pilot sign, generate first pilot tone;
In at least some subcarriers of the 2nd OFDM frequency pilot sign, generate second pilot tone;
In at least some other subcarriers of described the 2nd OFDM frequency pilot sign, generate interfere information; And
Comprise first and second pilot tones that generated comprising the described a plurality of frequency pilot signs in described lead code.
10,, wherein generate described second pilot tone and comprise according to the method for claim 9:
Use is applied to the scramble sequence of first pilot tone.
11,, wherein generate described second pilot tone and further comprise according to the method for claim 10:
To multiply by skew with the scramble sequence that generates described second pilot tone.
12, according to the method for claim 11, wherein said skew depends on described interfere information.
13, according to the method for claim 12, wherein said skew has unit module.
14,, wherein launch lead code and comprise a described OFDM frequency pilot sign and described the 2nd OFDM frequency pilot sign are launched as the adjacent OFDM symbol in the described lead code according to the method for claim 9.
15, according to the method for claim 9, further comprise:
The generation of control pilot signal to be differently being carried out during the asynchronous operation pattern He during half synchronous mode of operation, and functions different during use during the described asynchronous operation pattern and described half synchronous mode of operation generate described second pilot signal.
16, according to the method for claim 1, further comprise:
Generation comprises that the described frequency pilot sign of interfere information comprises that the phase deviation by putting on a plurality of subcarriers merges interfere information.
17, according to the method for claim 16, wherein, comprise the described frequency pilot sign of interfere information with generation by the input frequency pilot sign excute phase multiply operation that does not comprise interfere information is applied described phase deviation.
18, a kind of Wireless Telecom Equipment, this equipment comprises:
Interference measurement module; With
The lead code generation module is used to generate lead code, and described lead code comprises a plurality of frequency pilot signs, and at least one in the described frequency pilot sign comprises interfere information.
19, according to the equipment of claim 18, further comprise:
The transmitting set module is used to launch the lead code that is generated.
20, according to the equipment of claim 18, wherein said pilot tone generation module comprises:
The first symbol generation module is used to generate and corresponding at least one symbol of broadcast channel that is used for the transfer system configuration information.
21, according to the equipment of claim 18, the pilot tone that wherein said lead code generation module generates is at least one the acquisition pilot that is used for timing acquisition and sector identification.
22, according to the equipment of claim 19, the symbol that is used for the transfer system configuration information that wherein said lead code generation module comprises in the lead code that is generated is more than the symbol that is used to transmit interfere information.
23, according to the equipment of claim 19,
Wherein said lead code is a super-frame preamble; And
Wherein at least two symbols are used for transmitting interfere information in described lead code.
24, according to the equipment of claim 23, wherein said interference measurement module is other sector interference measurement modules that the interference of the sector different with the sector of this lead code of emission is measured.
25, according to the equipment of claim 18, wherein said lead code generation module comprises:
The first pilot tone generation module is used for generating first pilot tone at least some subcarriers of an OFDM frequency pilot sign;
The second pilot tone generation module is used for generating second pilot tone at least some subcarriers of the 2nd OFDM frequency pilot sign;
The interfere information generation module is used for generating interfere information at least some other subcarriers of described the 2nd OFDM frequency pilot sign; And
Comprise first and second pilot tones that generated comprising the described a plurality of frequency pilot signs in described lead code.
26, according to the equipment of claim 25, wherein said second pilot tone generation module use is applied to generate described second pilot tone by the scramble sequence of first pilot tone of first pilot tone generation module generation.
27, according to the equipment of claim 26, the wherein said second pilot tone generation module comprises offset module, is used for applying skew to the scramble sequence that is used to generate described second pilot tone.
28, according to the equipment of claim 25, wherein said transmitter is launched a described OFDM frequency pilot sign and described the 2nd OFDM frequency pilot sign as the adjacent OFDM symbol in the described lead code.
29, according to the equipment of claim 25, further comprise:
Pilot tone generate pattern control module, being used to control the described second pilot tone generation module operated with one of first operator scheme and second operator scheme in preset time, described first pattern is corresponding to communication equipment asynchronous operation pattern, described second pattern is corresponding to communication equipment half synchronous mode of operation, and the described second pilot tone generation module differently generates described second pilot tone during first operator scheme and second operator scheme.
30, a kind of Wireless Telecom Equipment, this equipment comprises:
The interferometry unit; With
Be used to generate the unit of lead code, described lead code comprises a plurality of frequency pilot signs, and at least one in the described frequency pilot sign comprises interfere information.
31, according to the equipment of claim 30, further comprise:
Be used to launch the unit of the lead code that is generated.
32, according to the equipment of claim 30, the wherein said unit that is used to generate comprises: the first symbol generation unit is used to generate and corresponding at least one symbol of broadcast channel that is used for the transfer system configuration information.
33, according to the equipment of claim 30, the pilot tone that the wherein said unit that is used for generating generates is at least one the acquisition pilot that is used for timing acquisition and sector identification.
34, according to the equipment of claim 30, the wherein said unit that is used to generate comprises:
First pilot generation unit is used for generating first pilot tone at least some subcarriers of an OFDM frequency pilot sign;
Second pilot generation unit is used for generating second pilot tone at least some subcarriers of the 2nd OFDM frequency pilot sign;
The interfere information generation unit is used for generating interfere information at least some other subcarriers of described the 2nd OFDM frequency pilot sign; And
Comprise first and second pilot tones that generated comprising the described a plurality of frequency pilot signs in described lead code.
35, a kind of equipment comprises:
Processor is configured to:
Measure and disturb; With
Operate transmitters emission lead code, described lead code comprises a plurality of frequency pilot signs, described leading
In the frequency symbol at least one comprises interfere information.
36, according to the equipment of claim 35, wherein said processor be further configured into:
Operate described transmitter, will launch as the part of described lead code with corresponding at least one symbol of the broadcast channel that is used for the transfer system configuration information.
37, according to the equipment of claim 35, wherein said frequency pilot sign comprises at least one the acquisition pilot that is used for the identification of timing acquisition and sector.
38, according to the equipment of claim 35, wherein said processor be further configured into, the emission described lead code before:
In at least some subcarriers of an OFDM frequency pilot sign, generate first pilot tone;
In at least some subcarriers of the 2nd OFDM frequency pilot sign, generate second pilot tone;
In at least some other subcarriers of described the 2nd OFDM frequency pilot sign, generate interfere information; And
Comprise first and second pilot tones that generated comprising the described a plurality of frequency pilot signs in described lead code.
39, according to the equipment of claim 38, wherein said processor be further configured into:
The generation of control pilot signal to be differently being carried out during the asynchronous operation pattern He during half synchronous mode of operation, and functions different during use during the described asynchronous operation pattern and described half synchronous mode of operation generate described second pilot signal.
40, a kind of computer-readable medium comprises machine-executable instruction, and this machine-executable instruction is used to control the method that communication equipment is realized and other communication equipments communicate, and this method comprises:
Measure and disturb; With
The emission lead code, described lead code comprises a plurality of frequency pilot signs, at least one in the described frequency pilot sign comprises interfere information.
41, according to the computer-readable medium of claim 40, further comprise machine-executable instruction, be used for:
To launch as the part of described lead code with corresponding at least one symbol of the broadcast channel that is used for the transfer system configuration information.
42, according to the computer-readable medium of claim 40, wherein said frequency pilot sign comprises at least one the acquisition pilot that is used for the identification of timing acquisition and sector.
43, according to the computer-readable medium of claim 40, further comprise machine-executable instruction, be used for before sending described lead code:
In at least some subcarriers of an OFDM frequency pilot sign, generate first pilot tone;
In at least some subcarriers of the 2nd OFDM frequency pilot sign, generate second pilot tone;
In at least some other subcarriers of described the 2nd OFDM frequency pilot sign, generate interfere information; And
Comprise first and second pilot tones that generated comprising the described a plurality of frequency pilot signs in described lead code.
44, according to the computer-readable medium of claim 43, further comprise machine-executable instruction, be used for:
The generation of control pilot signal to be differently being carried out during the asynchronous operation pattern He during half synchronous mode of operation, and described second pilot signal different function during use during the described asynchronous operation pattern and described half synchronous mode of operation generates.
45, the method that accesses terminal of a kind of operation, this method comprises:
Receive lead code, described lead code comprises a plurality of frequency pilot signs, and at least one of described frequency pilot sign comprises interfere information;
From the lead code that is received, recover interfere information; With
Based on the interfere information control signal emission that is recovered.
46,, wherein recover described interfere information and comprise according to the method for claim 45:
Use preamble structure information to determine to comprise described at least one frequency pilot sign position in the lead code that is received of interfere information.
47. the method according to claim 46 further comprises:
At least one frequency pilot sign that use is included in the lead code that is received carries out the timing acquisition operation.
48, according to the method for claim 46, further comprise:
Described at least one frequency pilot sign in the lead code that receives according to being included in, that comprise interfere information, the sector of the lead code that the identification emission is received.
49, according to the method for claim 46, the symbol that is used for the transfer system configuration information that wherein lead code that is received comprises is more than the symbol that is used to transmit interfere information.
50, according to the method for claim 46, wherein the lead code that is received is a super-frame preamble.
51,, be used to transmit as every symbol tone of the symbol of the data of the part of frame few in the main body of the described superframe of every symbol pitch ratio of the described symbol in the wherein said super-frame preamble according to the method for claim 50.
52. according to the method for claim 46, wherein at least two symbols are used for transmitting interfere information in the lead code that is received; And
Recovering interfere information from the lead code that is received comprises from described two symbols recover interfere information at least.
53,, wherein recover interfere information and comprise that use puts on first pilot tone and carries out descrambling operation with the scramble sequence that generates second pilot tone according to the method for claim 52.
54, a kind of accessing terminal comprises:
Receiver is used to receive lead code, and described lead code comprises a plurality of frequency pilot signs, and at least one of described frequency pilot sign comprises interfere information;
Interfere information recovers module, is used for recovering interfere information from the lead code that is received; With
The emission control module is used for based on the interfere information control signal emission that is recovered.
55, according to the accessing terminal of claim 54, further comprise:
Memory comprises the preamble structure information of being stored, and this information indication comprises the position of described at least one frequency pilot sign in lead code of interfere information; Wherein said interference recovers module and uses the preamble structure information of being stored to determine to comprise described at least one frequency pilot sign position in the lead code that is received of interfere information.
56, according to the accessing terminal of claim 55, further comprise:
The timing acquisition module is used for using at least one the described frequency pilot sign that is included in the lead code that is received to carry out the timing acquisition operation.
57, according to the accessing terminal of claim 55, further comprise:
Sector identification module is used for discerning the sector of the lead code that emission receives according to being included in described at least one frequency pilot sign lead code, that comprise interfere information that is received.
58, according to the accessing terminal of claim 55, the symbol that is used for the transfer system configuration information that wherein lead code that is received comprises is more than the symbol that is used to transmit interfere information.
59, according to the accessing terminal of claim 55, wherein the lead code that is received is a super-frame preamble.
60,, be used to transmit as every symbol tone of the symbol of the data of the part of frame few in the main body of the described superframe of every symbol pitch ratio of the described symbol in the wherein said super-frame preamble according to the accessing terminal of claim 59.
61. according to accessing terminal of claim 55, wherein at least two symbols are used for transmitting interfere information in the lead code that is received; And
Described interfere information recovers module and recover interfere information from described at least two symbol.
62, according to the accessing terminal of claim 61, wherein said interfere information recovers module and comprises:
Descrambling module is used to use put on first pilot tone and carry out descrambling operation with the scramble sequence that generates second pilot tone.
63, a kind of accessing terminal comprises:
Receiver unit is used to receive lead code, and described lead code comprises a plurality of frequency pilot signs, and at least one of described frequency pilot sign comprises interfere information;
Be used for recovering the unit of interfere information from the lead code that is received; With
Be used for unit based on the interfere information control signal emission that is recovered.
64, according to the accessing terminal of claim 63, further comprise:
Memory cell comprises the preamble structure information of being stored, and this information indication comprises the position of described at least one frequency pilot sign in lead code of interfere information; The wherein said unit that is used for recovering uses the preamble structure information of being stored to determine to comprise the position of described at least one frequency pilot sign of interfere information in the lead code that is received.
65, according to the accessing terminal of claim 64, further comprise:
Be used for using at least one frequency pilot sign that is included in the lead code that is received to carry out the unit of timing acquisition operation.
66, according to the accessing terminal of claim 64, wherein at least two symbols are used for transmitting interfere information in the lead code that is received; And
The described unit that is used for recovering recovers interfere information from described at least two symbols.
67, according to the accessing terminal of claim 66, the wherein said unit that is used to recover comprises:
Be used to use and put on first pilot tone is carried out descrambling operation with the scramble sequence that generates second pilot tone unit.
68, a kind of equipment comprises:
Processor is configured to:
Receive lead code, described lead code comprises a plurality of frequency pilot signs, and described frequency pilot sign extremely
Few one comprises interfere information;
From the lead code that is received, recover interfere information; And
Based on the interfere information control signal emission that is recovered.
69, according to the equipment of claim 68, wherein said processor be further configured into, when recovering described interfere information:
Use preamble structure information to determine to comprise described at least one frequency pilot sign position in the lead code that is received of interfere information.
70, according to the equipment of claim 69, wherein said processor be further configured into:
Described at least one frequency pilot sign in the lead code that receives according to being included in, that comprise interfere information, the sector of the lead code that the identification emission is received.
71, according to the equipment of claim 69, wherein at least two symbols are used for transmitting interfere information in the lead code that is received; And
Described processor be further configured into, when from the lead code that is received, recovering interfere information, from described at least two symbols, recover interfere information.
72, according to the equipment of claim 71, wherein said processor be further configured into, when recovering interfere information, use to put on first pilot tone and carry out descrambling operation with the scramble sequence that generates second pilot tone.
73, a kind of computer-readable medium comprises machine-executable instruction, and this machine-executable instruction is used to control access terminal realizes the method that communicates with other communication equipments, and this method comprises:
Receive lead code, described lead code comprises a plurality of frequency pilot signs, and at least one of described frequency pilot sign comprises interfere information;
From the lead code that is received, recover interfere information; With
Based on the interfere information control signal emission that is recovered.
74, according to the computer-readable medium of claim 73, further comprise machine-executable instruction, be used for:
Use preamble structure information to determine to comprise described at least one frequency pilot sign position in the lead code that is received of interfere information.
75. according to the computer-readable medium of claim 74, further comprise machine-executable instruction, be used for:
Described at least one frequency pilot sign in the lead code that receives according to being included in, that comprise interfere information, the sector of the lead code that the identification emission is received.
76, according to the computer-readable medium of claim 74, wherein at least two symbols are used for transmitting interfere information in the lead code that is received; And
Further comprise machine-executable instruction, be used for from described at least two symbols, recovering interfere information when the lead code that received is recovered interfere information.
77, according to the computer-readable medium of claim 76, further comprise machine readable media, be used for when recovering interfere information that use puts on first pilot tone and carries out descrambling operation with the scramble sequence that generates second pilot tone.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103181136A (en) * | 2010-08-23 | 2013-06-26 | 韩国电子通信研究院 | Communication method using a preamble to share characteristic information, method for generating the preamble, and communication system to which the methods are applied |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102045096A (en) * | 2009-10-23 | 2011-05-04 | 北京新岸线移动多媒体技术有限公司 | Method for transmitting information, device for transmitting information and communication device |
| US8750886B2 (en) * | 2010-05-06 | 2014-06-10 | Nokia Corporation | Apparatus and method for dynamic resolution of secondary communication system resources |
| US8582551B2 (en) * | 2010-05-26 | 2013-11-12 | Intel Corporation | Device, system and method of wireless communication over non-contiguous channels |
| CN110380838B (en) * | 2013-03-28 | 2021-08-03 | 华为技术有限公司 | Bandwidth allocation method and device, user equipment and base station |
| ES2810350T3 (en) | 2014-08-06 | 2021-03-08 | Lg Electronics Inc | Method and device for allocating wireless resources to transmit or receive data on a wireless LAN |
| WO2016056808A1 (en) * | 2014-10-05 | 2016-04-14 | 엘지전자 주식회사 | Method and apparatus for allocating wireless resources based on single resource unit in wlan |
| EP3396925B1 (en) * | 2015-12-24 | 2021-03-24 | Wilus Institute of Standards and Technology Inc. | Wireless communication method and wireless communication terminal, which use discontinuous channel |
| US10159050B2 (en) * | 2016-07-05 | 2018-12-18 | Gogo Llc | Multi-carrier power pooling |
| WO2018018509A1 (en) * | 2016-07-28 | 2018-02-01 | 广东欧珀移动通信有限公司 | Data transmission method, network equipment, and terminal equipment |
| CN113315614A (en) * | 2016-07-28 | 2021-08-27 | Oppo广东移动通信有限公司 | Data transmission method, terminal equipment and network equipment |
| CN108633059B (en) | 2017-03-25 | 2021-06-29 | 华为技术有限公司 | Method and equipment for resource allocation, method and equipment for determining partial bandwidth and method and equipment for indicating partial bandwidth |
| CN109699046B (en) * | 2017-10-24 | 2021-12-24 | 上海朗帛通信技术有限公司 | Method and device used in user equipment and base station for wireless communication |
| JP2021513232A (en) | 2017-12-21 | 2021-05-20 | オッポ広東移動通信有限公司Ｇｕａｎｇｄｏｎｇ Ｏｐｐｏ Ｍｏｂｉｌｅ Ｔｅｌｅｃｏｍｍｕｎｉｃａｔｉｏｎｓ Ｃｏｒｐ．， Ｌｔｄ． | Carrier load control method, network equipment, UE and computer storage media |
| US10993254B2 (en) * | 2018-02-16 | 2021-04-27 | Qualcomm Incorporated | Downlink control information signaling schemes for bandwidth part switching |
| CN115473618A (en) * | 2019-09-26 | 2022-12-13 | 华为技术有限公司 | Transmission method and device |
-
2007
- 2007-06-21 CN CNA2007800228459A patent/CN101473619A/en active Pending
- 2007-06-21 CN CNA200780022716XA patent/CN101473578A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103181136A (en) * | 2010-08-23 | 2013-06-26 | 韩国电子通信研究院 | Communication method using a preamble to share characteristic information, method for generating the preamble, and communication system to which the methods are applied |
| CN103181136B (en) * | 2010-08-23 | 2016-08-03 | 韩国电子通信研究院 | The communication means utilizing lead code sharing feature information, the method generating this lead code and be suitable for the communication system of said method |
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