CN101558577A

CN101558577A - Methods and apparatus related to power control and/or interference management in a mixed wireless communications system supporting wan signaling and peer to peer signaling

Info

Publication number: CN101558577A
Application number: CNA200780038369XA
Authority: CN
Inventors: 厉隽怿; R·拉罗亚
Original assignee: Qualcomm Inc
Current assignee: Qualcomm Inc
Priority date: 2006-09-15
Filing date: 2007-09-14
Publication date: 2009-10-14
Anticipated expiration: 2027-09-14
Also published as: CN101558577B; CN101543121B; CN101523961B; CN101518121A; CN101543121A; CN101523961A

Abstract

Methods and apparatus related to the sharing of wide area network (WAN) uplink bandwidth with peer to peer communication signaling usage are described. The base station regulates the level of interference from the peer to peer signaling by generating and transmitting peer to peer transmission power control signals intended for peer to peer wireless terminals in the local vicinity. A base station transmits into a downlink frequency band a signal, e.g., a beacon or broadcast channel signal, to be used by a peer to peer wireless terminal in controlling its peer to peer transmit power level into the corresponding uplink frequency band. The peer to peer wireless terminal receives and evaluates the base station signal. The determined information from the evaluation is used in determining whether or not peer to peer signal transmission is permitted and/or in determining a peer to peer transmission power level.

Description

In the mixed wireless communications system of supporting transmission of WAN signal and the transmission of reciprocity signal, control and/or the relevant method and apparatus of interference management with power

Related application

The application requires to enjoy the U.S. Provisional Patent Application S.N.60/845 that the name of submitting on September 15th, 2006 is called " BEACONS IN AMIXED WIRELESS COMMUNICATION SYSTEM ", 053 priority, and be that the name of submitting on June 18th, 2007 is called the U.S. Patent application S.N.11/764 of " METHODS AND APPARATUS RELATED TO PEER TO PEER DEVICECONTROL ", 332 part continuation application, incorporate these two applications into this paper clearly with way of reference, and these two applications all are transferred to the application's assignee.

Technical field

A plurality of embodiment relate to and are used for method of wireless communication and device, relate more specifically to the method and apparatus relevant with peer-to-peer communications.

Background technology

Wireless frequency spectrum is a resource a kind of costliness and valuable.In the wide area network system of for example cellular system, the wireless frequency spectrum of distributing to WAN is not utilized often fully.If develop the method and apparatus that to discern and/or to utilize these air link resources of underusing, then will be favourable.If these method and apparatus are the adaptive feasible interference to WAN communication that additional use produced that can manage by air link resources, then this will be useful.Shared bandwidth and simultaneously the WAN system to be caused the method and apparatus of minimum influence and/or modification will be useful between WAN communication and peer-to-peer communications.

Summary of the invention

Described about wide area network (WAN) uplink bandwidth and peer-to-peer communications signal are transmitted the method and apparatus that use is shared.The base station sends signal in the base station down link frequency bands, for example as a reference and/or the beacon signal of control information signal or non-beacon broadcast channel signal, this signal is used for controlling its reciprocity transmission power level at the corresponding base station uplink band by reciprocity wireless terminal.The equity wireless terminal receives and the estimation base station signal.Obtain following information by this estimation (for example received signal power measurement and/or decode operation), this information is used to determine whether to allow reciprocity signal transmission and/or be used for determining reciprocity transmission power level by reciprocity wireless terminal.In certain embodiments, reciprocity wireless terminal utilization is determined reciprocity transmission power level by current service class information and/or other coded message (for example level of interference indicator value) that the base station signal that is received transmits.

In a plurality of embodiment, the base station changes the transmission power level of the signal that is sending and/or changes the information that this signal is transmitting.In this way, the interference that is generated by reciprocity wireless terminal can dynamically be adjusted in the base station, and wherein the WAN uplink signal of this interference effect base station receives.

Because the reference that is sent to reciprocity wireless terminal and/or the control signal that are sent by the base station are to transmit in the downlink band of base station, so the base station can easily be incorporated this signal in its downlink transmission structure into.Send at the uplink band of base station if alternatively this signal allocation is used for, then because can not make the base station send simultaneously and receive, so the WAN uplink signal that the base station need be limited during this time interval from cellular communication apparatus transmits at same frequency band for disturbing consideration.Therefore, consider and/or the angle of influence that the WAN uplink signal is transmitted from base station design, this in the base station down link frequency bands, transmit equity with reference to and/or the method for control signal be favourable.

A kind of illustrative methods of operate wireless communication equipment is provided, and described Wireless Telecom Equipment is supported in the peer-to-peer communications in the base station uplink frequency band, and described method comprises: receive first signal in downlink band from the base station; Received signal is estimated; And the reciprocity through-put power of controlling at least some reciprocity signals transmission in the described uplink band according to result to the described estimation of described first received signal.A kind of example wireless communication device that is supported in the peer-to-peer communications in the base station uplink frequency band is provided, and described Wireless Telecom Equipment comprises: receiver module is used for receiving first signal from the base station in downlink band; Signal processing module is used for received signal is estimated; And reciprocity through-put power control module, be used for basis is controlled at least some the reciprocity signals transmission of described uplink band to the result of the described estimation of described first received signal reciprocity through-put power.

Provide a kind of base station of operating with the illustrative methods of control from the interference of the peer-to-peer communications in first communication band, described method comprises: generate reciprocity transmission power control signal; And in the second communication frequency band, sending described reciprocity transmission power control signal, described second communication frequency band is different with described first communication band.A kind of exemplary base is provided, and its control is from the interference of the peer-to-peer communications in first communication band, and described base station comprises: reciprocity transmission power control signal generation module is used to generate reciprocity transmission power control signal; And transmitter module, being used for sending described reciprocity transmission power control signal at the second communication frequency band, described second communication frequency band is different with described first communication band.In certain embodiments, at control of wide area network uplink transmission power and the control of reciprocity through-put power, the base station generates and sends different independent control signals with the power controlling transmission level.

Although in above summary of the invention various embodiments has been discussed, should be noted that does not need all embodiment all to comprise identical feature, but and more above-described in certain embodiments features are optional may expect.A large amount of supplementary features, embodiment and benefit have been discussed in the specific descriptions below.

Description of drawings

Fig. 1 is a flow chart of operating the illustrative methods of the Wireless Telecom Equipment of supporting the peer-to-peer communications in the base station uplink frequency band.

Fig. 2 is that the operation base station is with the flow chart of control from the illustrative methods of the interference of the peer-to-peer communications in first communication band.

Fig. 3 is the diagrammatic sketch according to the example wireless communication device of the peer-to-peer communications in the WAN uplink band of the support base station of a plurality of embodiment wireless terminal of mobile node (for example, such as).

Fig. 4 is the diagrammatic sketch according to the exemplary base of a plurality of embodiment, and this base station generates and sends the signal that is used for reciprocity through-put power control.

Fig. 5 is a flow chart of operating the illustrative methods of the Wireless Telecom Equipment of supporting reciprocity signal to transmit (signaling) according to a plurality of embodiment.

Fig. 6 is the diagrammatic sketch of the example wireless communication device (for example, supporting the wireless terminal such as mobile node of peer-to-peer communications) according to a plurality of embodiment.

Fig. 7 is a flow chart of operating the illustrative methods of the Wireless Telecom Equipment of supporting peer-to-peer communications according to a plurality of embodiment, and it comprises the combination of Fig. 7 A and Fig. 7 B.

Fig. 8 is the diagrammatic sketch of the example wireless communication device (for example, supporting the wireless terminal such as mobile node of peer-to-peer communications) according to a plurality of embodiment.

Fig. 9 is the diagrammatic sketch that an exemplary embodiment is shown, and it comprises example communication system, describes the form of frequency band use information and the form that exemplary reciprocity wireless terminal transmission power level information is shown.

Figure 10 is the diagrammatic sketch according to the example wireless communications of a plurality of embodiment.

Figure 11 is a flow chart of operating the illustrative methods of base station according to a plurality of embodiment.

Figure 12 is a flow chart of operating the illustrative methods of base station according to a plurality of embodiment.

Figure 13 is the diagrammatic sketch according to the exemplary base of a plurality of embodiment.

Figure 14 comprises according to the example communication system of a plurality of embodiment and the diagrammatic sketch of frequency band use form.

Figure 15 shows the diagrammatic sketch of the feature of a plurality of embodiment, and wherein wide area network has dead time section (silent period) in these embodiments, and wherein the base station monitors and measure reciprocity noise in this dead time section.

Figure 16 shows the diagrammatic sketch of the certain characteristics of a plurality of embodiment, and is the continuity of the example of Figure 15.

Figure 17 shows the diagrammatic sketch of the exemplary look-up table that is used for controlling value of the feature of a plurality of embodiment.

Figure 18 is a flow chart of operating the illustrative methods of base station (for example, its uplink bandwidth also is used for the base station that reciprocity signal transmits) according to a plurality of embodiment.

Figure 19 is a flow chart of operating the illustrative methods of base station (for example, its uplink bandwidth also is used for the base station that reciprocity signal transmits) according to a plurality of embodiment.

Figure 20 is the diagrammatic sketch of the relation curve of noise W on the vertical axis and the control factor α on the trunnion axis.

Figure 21 is the diagrammatic sketch of the relation curve of noise W on the vertical axis and the control factor α on the trunnion axis, and it compares different brackets and different qualities curve that Figure 15 shows other area interference.

Figure 22 shows the illustrative methods that the selection of the power control factor α that uses is adjusted in a plurality of embodiment.

Figure 23 shows the diagrammatic sketch that uses in the example bandwidth of some embodiment that time division duplex (TDD) are used for wide area network (for example, being used for cellular communication).

Figure 24 shows the diagrammatic sketch that uses in the example bandwidth of some embodiment that Frequency Division Duplexing (FDD) (FDD) are used for wide area network (for example, being used for cellular communication).

Figure 25 shows according to the exemplary band between wan communication use and peer-to-peer communications use of a plurality of embodiment and the diagrammatic sketch of shared frequency band use.

Embodiment

Fig. 1 is the flow process Figure 100 that operates the illustrative methods of the Wireless Telecom Equipment of supporting the peer-to-peer communications in the base station uplink frequency band.Operate in the step 102 beginning, in step 102, Wireless Telecom Equipment start and initialization and proceed to step 104.In step 104, Wireless Telecom Equipment receives first signal from the base station in downlink band.In certain embodiments, this first signal is a beacon signal.In some this embodiment, beacon signal comprises three OFDM tones at most, and every tone transmission power level that tone had of this beacon signal is than average every tone transmission power level height of the non-NULL tone of reciprocity signal 10dB at least.In certain embodiments, this first signal is a broadcast channel signal.In some this embodiment, broadcast channel signal comprises one group of OFDM tone, and every tone transmission power level that these tones had of broadcast channel signal is than average every tone transmission power level height of the non-NULL tone of reciprocity signal 3dB at least.In another embodiment, this first signal is the CDMA pilot signal.

In certain embodiments, up link and downlink band are corresponding to different non-overlapped Frequency Division Duplexing (FDD) (FDD) wide area network (WAN) base station communication frequency bands.In some other embodiment, base station time division duplex (TDD) frequency band of uplink band during, and the same base TDD frequency band of downlink band during corresponding to downlink time slots corresponding to uplink time slot.Figure 24 shows exemplary WAN FDD frequency spectrum and disposes, and it comprises the air link resources of sharing with reciprocity signal transmission.Figure 23 shows exemplary WAN TDD frequency spectrum and disposes, and it comprises the air link resources of sharing with reciprocity signal transmission.

Operation proceeds to step 106 from step 104.In step 106, Wireless Telecom Equipment is estimated received signal.In certain embodiments, this estimation is a signal power measurement.In certain embodiments, this estimation is the extraction to the coded message of transmitting in received signal.In a plurality of embodiment, this estimation comprises according to the received power level of received signal and the coded message of having extracted transmitted in received signal and comes acquired information.Operation proceeds to step 108 from step 106.

In step 108, Wireless Telecom Equipment is controlled the reciprocity through-put power of at least some reciprocity signals transmission in the described uplink band according to the result to the estimation of described first received signal.In certain embodiments, control reciprocity through-put power and comprise use first function, wherein compare with the second received signal power level that is higher than the first received signal power level, described first function arrives lower level at the described first received signal power level with reciprocity transmit power restrictions.In a plurality of embodiment, first function is determined the maximum reciprocity transmission power level that allows.Operation proceeds to step 110 from step 108.

In step 110, Wireless Telecom Equipment receives secondary signal from described base station locating with the time of the asynchronism(-nization) that receives described first signal in downlink band.Then, in step 112, Wireless Telecom Equipment is estimated second received signal.Operation proceeds to step 114 from step 112.

In step 114, Wireless Telecom Equipment determines whether it should forbid sending reciprocity signal.If in step 114, Wireless Telecom Equipment determines that it should forbid sending reciprocity signal, then operates from step 114 and proceeds to step 120.If in step 114, Wireless Telecom Equipment determines to allow it to send reciprocity signal, then operates from step 114 proceeding to step 116.

In step 116, Wireless Telecom Equipment is according to determining reciprocity transmission power level from the information that the estimation of second received signal is derived.Operation proceeds to step 118 from step 116, and in step 118, Wireless Telecom Equipment sends reciprocity signal according to determined reciprocity transmission power level.

Return step 120, in step 120, Wireless Telecom Equipment forbids sending peer-to-peer communications in uplink band, up to determine to allow Wireless Telecom Equipment to send reciprocity signal from another signal of base station by estimation till.Operation proceeds to step 110 from step 118 or step 120, and in step 110, Wireless Telecom Equipment receives another signal from the base station.

Fig. 2 is that the operation base station is with control flow process Figure 200 from the illustrative methods of the interference of the peer-to-peer communications in first communication band.This first communication band is used for: (i) transmit from the wide area network uplink signal of wide area network wireless terminal to the base station; And (ii) the peer-to-peer communications signal between two reciprocity wireless terminals transmits.Operate in the step 202 beginning, in step 202, exemplary base start and initialization and proceed to step 204.In step 204, the interference that base station measurement transmits the wide area network uplink signal.Operation proceeds to step 206 from step 204.In step 206, the base station estimation is derived from the interference contribution of peer device.Then, in step 208, the base station generates the first reciprocity transmission power control signal, and in step 210, the base station generates wide area network uplink transmission power control signal.Operation proceeds to step 212 from step 210.

In step 212, the base station sends the first reciprocity transmission power control signal that is generated in the second communication frequency band, described second communication frequency band is different with described first communication band, and in step 214, the base station sends to one or more wide area network wireless terminals with the wide area network uplink transmission power control signal that is generated in described second communication frequency band.This second communication frequency band is used for: (i) down link signal is delivered to the wide area network wireless terminal from the base station; And (ii) reciprocity transmission power control signal is delivered to reciprocity wireless terminal.

In certain embodiments, first communication band is Frequency Division Duplexing (FDD) (FDD) wide area network (WAN) uplink band, and the second communication frequency band is Frequency Division Duplexing (FDD) (FDD) wide area network (WAN) downlink band.In some this embodiment, uplink band and downlink band are not overlapping and constitute corresponding a pair of.In some other embodiment, first communication band is base station time division duplex (TDD) frequency band during the uplink time slot, and the second communication frequency band is same base time division duplex (TDD) frequency band during the downlink time slots.Figure 24 shows exemplary WAN FDD frequency spectrum and disposes, and it comprises the air link resources of sharing with reciprocity signal transmission.Figure 23 shows exemplary WAN TDD frequency spectrum and disposes, and it comprises the air link resources of sharing with reciprocity signal transmission.

In certain embodiments, reciprocity transmission power control signal is a beacon signal.In some this embodiment, beacon signal comprises three OFDM tones at most, and every tone transmission power level that tone had of this beacon signal is than average every tone transmission power level height of the non-NULL tone of reciprocity signal 10dB at least.

In certain embodiments, reciprocity transmission power control signal is a broadcast channel signal.In some this embodiment, broadcast channel signal comprises one group of OFDM tone, and every tone transmission power level that these tones had of broadcast channel signal is than average every tone transmission power level height of the non-NULL tone of reciprocity signal 3dB at least.

In some other embodiment, reciprocity transmission power control signal is the CDMA pilot signal.

Operation proceeds to step 216 from step 214.In step 216, the interference that base station measurement transmits the WAN uplink signal, and in step 218, the base station estimation is derived from the interference contribution of peer device.Operation proceeds to step 220 from step 218.In step 220, the base station determines whether that the one or more reciprocity wireless terminals of order change transmission power level.Operation proceeds to step 222 from step 220.In step 222,, then operate and proceed to step 224 from step 222 if base station decision order changes reciprocity through-put power; Otherwise operation proceeds to step 226 from step 222.

Return step 224, in step 224, the base station generates the second reciprocity transmission power control signal.In certain embodiments, step 224 comprises substep 228, in substep 228, compares with previous reciprocity transmission power control signal, encodes to different control informations in the described second reciprocity transmission power control signal in the base station.In some this embodiment, reciprocity wireless terminal uses this coded message to adjust its reciprocity transmission power level, for example is used for determining the maximum reciprocity transmission power level that allows.Operation proceeds to step 230 from step 224.In step 230, the base station sends the second reciprocity transmission power control signal that is generated.In certain embodiments, step 230 comprises substep 232, and in substep 232, the base station sends the described second reciprocity transmission power control signal with the transmission power level different with the power level that sends previous reciprocity transmission power control signal.In some this embodiment, reciprocity wireless terminal uses the received power level of reciprocity transmission power control signal to adjust its reciprocity transmission power level, for example is used for determining the maximum reciprocity transmission power level that allows.

Return step 226, in step 226, the base station resends the reciprocity transmission power control signal that has before sent.Operation proceeds to step 216 from step 230 or step 226, in step 216, measures the interference that the WAN uplink signal is transmitted.

Fig. 3 is the diagrammatic sketch according to the example wireless communication device 2300 of the peer-to-peer communications in the WAN uplink band of the support base station of a plurality of embodiment, and this Wireless Telecom Equipment 2300 is for example such as the wireless terminal of mobile node.Example wireless communication device 2300 in the downlink band of base station from this base station received signal, wherein Wireless Telecom Equipment 2300 utilizes this signal to determine whether to allow it to send reciprocity signal in the uplink band of this base station and/or determines reciprocity transmission power level information, for example maximum reciprocity transmission power level.

Wireless Telecom Equipment 2300 comprises receiver module 2302, transmitter module 2304, user I/O equipment 2308, processor 2306 and the memory 2310 that is coupled via bus 2312, and wherein each element can be via this bus 2312 swap datas and information.Memory 2310 comprises routine 2318 and data/information 2320.

Processor 2306, CPU for example, executive routine 2318 also uses data/information 2320 in the memory 2310 to control the operation and the implementation method of Wireless Telecom Equipment 2300, for example method of flow process Figure 100 of Fig. 1.

Receiver module 2302, OFDM receiver for example, be coupled to reception antenna 2314, wherein Wireless Telecom Equipment 2300 via this reception antenna 2314 from base station received signal, the non-beacon signal of beacon signal or broadcast channel for example, received signal is used for determining reciprocity transmission power level information that received signal receives in the base station down link frequency bands.Receiver module 2302 also receives the peer-to-peer communications signal in the uplink band of base station.In certain embodiments, at some time durations, receiver module 2302 is from base station receiving downlink signal, for example distributing signal and service signal, wherein Wireless Telecom Equipment uses this base station as the tie point in the wide area network, and wherein communication equipment 2300 is as cellular communication apparatus.

Transmitter module 2304, for example the OFDM transmitter is coupled to transmitting antenna 2316, and wherein Wireless Telecom Equipment 2300 uses the base station uplink frequency band to send reciprocity signal to other Wireless Telecom Equipment via this transmitting antenna 2316.In certain embodiments, during some time intervals, transmitter module 2304 sends uplink signal to the base station, and wherein Wireless Telecom Equipment is worked in the WAN operator scheme of for example honeycomb operator scheme.

For example, user I/O equipment 2308 comprises microphone, keyboard, keypad, mouse, camera, switch, loud speaker, display etc.User I/O equipment 2308 allows the partial function at least of user input data/information, visit dateout/information and the control Wireless Telecom Equipment 2300 of Wireless Telecom Equipment 2300, for example attempts to initiate the peer-to-peer communications session.

Routine 2318 comprises signal processing module 2322, reciprocity through-put power control module 2324 and reciprocity authorization module 2326.In a plurality of embodiment, Wireless Telecom Equipment 2300 comprises one or more in reciprocity through-put power mouse beacon identification module 2328 and the reciprocity through-put power control broadcast singal identification module 2330.In a plurality of embodiment, signal processing module 2322 comprises one or more in power measurement module 2333 and the decoder module 2335.

Data/information 2320 comprises sequential/frequency structure information 2336, transmits the received signal 2338 and the determined reciprocity power control information 2340 of reciprocity transmission power control information.In a plurality of embodiment, data/information 2320 comprises the beacon characteristic information 2332 that is derived from equity transmission control base station and is derived from one or more in the broadcast channel characteristic information 2334 of reciprocity through-put power control base station.

The beacon characteristic information 2332 that is derived from reciprocity through-put power control base station comprises tone information 2342, power information 2344 and temporal information 2346.The broadcast channel characteristic information 2344 that is derived from reciprocity through-put power control base station comprises tone information 2348, power information 2350 and temporal information 2352.Sequential/frequency structure information 2336 comprises one or more in TDD base station air link resources structural information 2354 and the FDD base station air link resources structural information 2356.

Signal processing module 2322 is carried out the estimation from the received signal of base station that receives in downlink band, and received signal is used to influence the reciprocity through-put power of Wireless Telecom Equipment 2300.Power measurement module 2333 is measured the received power of received signal.2335 pairs of coded messages of transmitting in received signal of decoder module are extracted.In certain embodiments, signal processing module 2322 comprises power measurement module 2333 that the received power level of received signal is measured and the decoder module 2335 that the coded message of transmitting is extracted in received signal, and this estimation comprises acquired information from the received power level of received signal and the information of transmitting extracted received signal.

In certain embodiments, the received signal from the base station is a beacon signal.For example, received signal is following beacon signal, this beacon signal comprises three OFDM tones at most, and the tone of this beacon signal be with than average every tone transmission power level height of the non-NULL tone of reciprocity signal at least every tone transmission power level of 10dB send.

In certain embodiments, the received signal from the base station is a broadcast channel signal.For example, received signal is following broadcast channel signal, this broadcast channel signal comprises one group of OFDM tone, and these tones of broadcast channel signal be with than average every tone transmission power level height of the non-NULL tone of reciprocity signal at least every tone transmission power level of 3dB send.

In some other embodiment, be the CDMA pilot signal from the received signal of base station.In some this embodiment, Wireless Telecom Equipment uses the received power level of CDMA pilot signal as input, to determine the reciprocity transmission power level in the Wireless Telecom Equipment 2300.

Equity through-put power control module 2324 according to in downlink band from the result of the estimation of the received signal of base station, control the reciprocity through-put power of at least some reciprocity transmission signals in the base station uplink frequency band.In a plurality of embodiment, equity through-put power control module 2324 is used first functions control equity through-put power, wherein compare with the second received signal power level that is higher than the first received signal power level, described first function arrives lower level at the described first received signal power level with reciprocity transmit power restrictions.For example, for the appointment input range of received power, the reciprocity transmission power level of maximum permission meets the antilinear relation.In a plurality of embodiment, first function is determined the maximum reciprocity through-put power that allows, and the reciprocity through-put power of reality is controlled to be is less than or equal to the determined maximum reciprocity transmission power level that allows.

Equity authorization module 2326 is according to determining whether to allow Wireless Telecom Equipment to send the peer-to-peer communications signal in uplink band to the estimation from the received signal of base station.Equity through-put power mouse beacon identification module 2328 uses the information that comprises the beacon characteristic information 2332 that is derived from reciprocity through-put power control base station in the memory 2310, identifies the beacon signal that is used for reciprocity power delivery power control that is derived from the base station from a plurality of signals that just transmitting the base station down link frequency bands.Equity through-put power control broadcast singal identification module 2330 uses the information that comprises the broadcast signals feature information 2334 that is derived from reciprocity through-put power control base station in the memory 2310, identifies the non-beacon broadcast signal that is used for reciprocity power delivery power control that is derived from the base station from a plurality of signals that just transmitting the base station down link frequency bands.

For example, tone information 2342 comprises the number that is identified at the beacon signal OFDM tone that is used for the control of reciprocity through-put power and the information of position.For example, power information 2344 comprises the information of the power level that identifies beacon signal, for example is used for distinguishing from other receiving downlink signal the information of the beacon that receives.Power information 2344 also comprise be used to make the beacon signal power levels that the receives information relevant with reciprocity transmission power control information.For example, temporal information 2346 comprises the information of the position in the circulation down link sequential organization that is identified at the beacon signal that is allocated for reciprocity through-put power control, for example OFDM notation index information.

For example, tone information 2348 comprises the number that is identified at the broadcast singal OFDM tone that is used for the control of reciprocity through-put power and the information of position.For example, power information 2350 comprises the information of the power level of identification of broadcast signal, for example is used for distinguishing the information that is allocated for the received broadcast signal of constant power control from other receiving downlink signal.Power information 2350 also comprises and is used to the information that makes the received broadcast signal power level relevant with reciprocity transmission power control information.For example, temporal information 2352 comprises the information of the position in the circulation down link sequential organization that is identified at the broadcast singal that is allocated for reciprocity through-put power control, for example OFDM notation index information.

TDD base station air link resources structural information 2354 comprises the information of sign by the TDD frequency band of WAN base station use.For example, information 2354 comprises the information of the corresponding uplink band of base station TDD frequency band during sign and the uplink time slot and the information of the corresponding downlink band of base station TDD frequency band during sign and the downlink time slots.

FDD base station air link resources structural information 2356 comprises the information of the not overlapping FDDWAN base station communication frequency band that sign is different.For example, information 2356 comprises the information of sign uplink band (being FDD WAN frequency band), and the information of sign downlink band (being different FDD WAN frequency bands), and this uplink band and downlink band form a pair of.

For example, the received signal 2338 that transmits reciprocity transmission power control information is beacon signal or the non-beacon broadcast channel signals that received by receiver module 2302, wherein this signal identifies by one in the identification module 2328,2330, and is handled by signal processing module 2322.For example, determined reciprocity power control information 2340 comprises whether sign allows Wireless Telecom Equipment 2300 to send the determined maximum information that allows the information of reciprocity transmission power level and/or identify actually determined reciprocity transmission power level of information, sign of reciprocity signal.

Fig. 4 is the diagrammatic sketch according to the exemplary base 2400 of a plurality of embodiment.The reception of the reciprocity wireless terminal that the identical air link resources that exemplary base 2400 management come leisure to be used for its wide area network uplink communication sends is disturbed.For example, this identical first communication band is used for: (i) transmit from the wide area network uplink signal of wide area network wireless terminal to base station 2400; And (ii) the peer-to-peer communications signal between two reciprocity wireless terminals transmits.Exemplary base 2400 determine and in downlink band transmitting power control signal, wherein reciprocity wireless terminal utilizes this power control signal to determine its transmission power level.Exemplary base 2400 determines also and sends different power control signals that in downlink band wherein the WAN wireless terminal utilizes this different power control signal to determine its uplink transmission power.Therefore, the second communication frequency band is used for: (i) transmit down link signal to control its transmission power control to the wide area network wireless terminal; And (ii) transmit reciprocity power control signal to peer communications devices.

Exemplary base 2400 comprises receiver module 2402, transmitter module 2404, processor 2406, I/O interface 2408 and the memory 2410 that is coupled via bus 2412, and wherein each element can pass through bus 2412 swap datas and information.

Receiver module 2402, OFDM receiver for example, be coupled to reception antenna 2414, wherein from wireless terminal receiving uplink signal, for example these wireless terminals are operated in honeycomb mode and use base station 2400 as network connection point via this reception antenna 2414 in base station 2400.Receiver module 2402 also receives the interference of the peer communications devices of comfortable local near zone operation.In certain embodiments, receiver module 2402 also receives the interference from the uplink signal transmission of the cellular device in the neighbor cell.

Transmitter module 2404, for example the OFDM transmitter is coupled to transmitting antenna 2416, and wherein base station 2400 sends down link signal via this transmitting antenna 2416 to the wireless terminal that uses base station 2400 as network connection point.These down link signals comprise the power control signal that is sent to the WAN wireless terminal.Transmitter module 2404 also sends the transmission power control signal that is generated in the base station down link frequency bands, for example signal 2444, wherein reciprocity wireless terminal uses this signal to control its transmission power level, and this equity wireless terminal is used for the uplink band of base station reciprocity signal transmission and therefore base station receiver module 2402 is produced disturbing.

Memory 2410 comprises routine 2418 and data/information 2420.Processor 2406, CPU for example, executive routine 2418 also uses data/information 2420 in the memory 2410 to control the operation and the implementation method of base station 2400, for example method of flow process Figure 200 of Fig. 2.

Routine 2418 comprises that interference measurement module 2422, reciprocity signal transmit restriction determination module 2426, reciprocity transmission power control signal generation module 2428 and wide area equity power signals generation module 2430.In certain embodiments, routine 2418 comprises interference type separation module 2424.In a plurality of embodiment, routine 2418 comprises through-put power control module 2432.

Data/information 2420 comprises interfere information 2436, wide area network uplink load information 2438, reciprocity control information transmission 2440, wide area network control information transmission 2442, reciprocity transmission power control signal 2444, the wide area network wireless terminal transmission power control signal 2446 that generates and the sequential/frequency structure information 2448 of generating.Data/information 2420 comprises the beacon characteristic information 2450 that is derived from reciprocity through-put power control base station and is derived from one or more in the broadcast channel characteristic information 2452 of reciprocity through-put power control base station.Sequential/frequency structure information 2448 comprises one or more in TDD base station air link resources structural information 2454 and the FDD base station air link resources structural information 2456.The beacon characteristic information 2450 that is derived from reciprocity through-put power control base station comprises tone information 2458, power information 2460 and temporal information 2462.The broadcast channel characteristic information 2452 that is derived from reciprocity through-put power control base station comprises tone information 2464, power information 2466 and temporal information 2468.

Equity transmission power control signal generation module 2428 uses and comprises that the data/information 2420 of reciprocity control information transmission 2440 generates reciprocity transmission power control signal, and for example signal 2444.

Wide area network transmission power control signal generation module 2430 generates the wide area network transmission power control signal, and for example signal 2446.

For example, 2432 pairs of transmitter modules 2404 of the through-put power control module that comprises are in certain embodiments controlled to come to send the reciprocity transmission power control signal that is generated with the different capacity level according to the reciprocity transmission power control information that will transmit, the for example following embodiment of these embodiment wherein, reciprocity in this embodiment wireless terminal uses the received power of reciprocity transmission power control signal to adjust its reciprocity transmitted power.For example, 2432 pairs of transmitter modules 2404 of through-put power control module are controlled, so that send the second reciprocity transmission power control signal with the power level that is different from the first reciprocity transmission power control signal, and reciprocity wireless terminal uses the received power of reciprocity transmission power control signal to adjust its reciprocity transmission power level.

In certain embodiments, reciprocity transmission power control signal generation module 2428 comprises coder module 2434, is used for reciprocity transmission power control information is encoded to the reciprocity transmission power control signal that is generated.For example, with compare in the first reciprocity transmission power control signal, coder module 2434 is encoded to different coding control informations in the second reciprocity transmission power control signal, and reciprocity wireless terminal uses coded message to adjust its reciprocity transmission power level.

Whether the equity signal transmits restriction determination module 2426 and determines to allow in first communication band reciprocity signal to transmit, and perhaps whether limits peer-to-peer communications in described first communication band, and wherein said first communication band is the uplink communication frequency band of base station for example.In a plurality of embodiment, reciprocity signal transmits restriction determination module 2426 and utilizes interfere information 2436 and/or WAN uplink load information 2438 to make a strategic decision.Transmit the decision-making of equity restriction determination module 2426 via the reciprocity transmission power control signal 2444 that is generated.

Interference measurement module 2422 is measured the interference for receiver module 2402, and wherein receiver module 2402 is attempted to receive and recovered WAN uplink signal from the WAN wireless terminal, and wherein this WAN wireless terminal use base station 2400 is as network connection point.Interference can and sometimes from multiple source, comprise that neighbor cell WAN wireless terminal uplink signal in the sub-district of adjacent base station transmits and uses the reciprocity signal of same uplink communication band to transmit.Interference type separation module 2424 is distinguished between interference that causes owing to reciprocity signal transmission and the interference signal transmission from other source, and wherein the interference signal from other source transmits for example from the uplink signal that uses adjacent base station as the WAN WT of its tie point.The equity signal transmits restriction determination module 2426, reciprocity transmission power control signal generation module 2428 and/or 2432 uses of through-put power control module and makes a strategic decision to control reciprocity transmission power level from the interfere information and/or the WAN load information 2438 of module 2422 and/or 2424.

For example, tone information 2458 comprises that sign is used to generate the number of OFDM tone of reciprocity transmission power control signal and the information of position by module 2428, should the equity transmission power control signal be beacon signal wherein.In certain embodiments, beacon signal comprises three OFDM tones at most.Module 2428 is used power information 2460, for example identifies the information of beacon tone transmission power level, generates reciprocity transmission power control signal, i.e. beacon signal.In certain embodiments, every tone transmission power level that tone had of beacon signal is than average every tone transmission power level height of the non-NULL tone of reciprocity signal 10dB at least.In certain embodiments, power information 2460 also comprises being used for the beacon signal transmitted power changed and carries out relevant information with the variation of the reciprocity transmission power information that is transmitted.In received power level transmission some embodiment about the information of reciprocity through-put power of beacon signal, through-put power control module 2432 is utilized this variable power information.For example, temporal information 2462 comprises the information of the position in the circulation down link sequential organization that identifies the beacon signal that is allocated for reciprocity through-put power control, for example OFDM notation index information.

For example, tone information 2464 comprises that sign is used to generate the number of OFDM tone of reciprocity transmission power control signal and the information of position by module 2428, should the equity transmission power control signal be broadcast channel signal wherein.Module 2428 is used power information 2466, for example identifies the information of beacon tone transmission power level, generates reciprocity transmission power control signal, i.e. broadcast channel signal.In certain embodiments, be used to transmit every tone transmission power level that tone had of base station broadcast channel signal of reciprocity transmission power control information than average every tone transmission power level height of the non-NULL tone of reciprocity signal 3dB at least.In certain embodiments, power information 2466 also comprises being used for the broadcast channel signal transmitted power changed and carries out relevant information with the variation of the reciprocity transmission power information that is transmitted.In received power level transmission some embodiment about the information of reciprocity through-put power of broadcast channel signal, through-put power control module 2432 is utilized this variable power information.For example, temporal information 2468 comprises the information of the position in the circulation down link sequential organization that identifies the broadcast channel signal that is allocated for reciprocity through-put power control, for example OFDM notation index information.

2400 are used for the embodiment that the WAN signal transmits with TDD in the base station, and TDD base station air link resources structural information 2454 comprises the information of the TDD frequency band that use sign WAN base station.For example, information 2454 comprises: (i) information of the corresponding uplink band of base station TDD frequency band during sign and the uplink time slot; And the (ii) information of the corresponding downlink band of base station TDD frequency band during sign and the downlink time slots.TDD base station air link resources structural information 2454 also comprises the information that identifies the air link resources in the downlink time slots that is allocated for the TDD frequency band that transmits reciprocity transmission power control signal, and wherein reciprocity transmission of control signals for example is used for the beacon or the broadcast channel signal of reciprocity through-put power control.

2400 are used for the embodiment that the WAN signal transmits with FDD in the base station, and FDD base station air link resources structural information 2456 comprises the information of the non-overlapped FDD WAN base station communication frequency band that sign is different.For example, information 2456 comprises the information of sign uplink band (being FDD WAN frequency band), the information of sign downlink band (being different FDD WAN frequency bands), and this up link and downlink band constitute a pair of.FDD base station air link resources structural information 2456 also comprises which air link resources of sign allocation of downlink FDD frequency band to be used to transmit the information of reciprocity transmission power control signal, and wherein reciprocity transmission power control signal for example is used for the beacon or the broadcast channel signal of reciprocity through-put power control.

In certain embodiments, the WAN wireless terminal transmission power control signal that at least some generated is sent to the WAN wireless terminal of independent sign, and the reciprocity transmission power control signal that is generated is not sent to the reciprocity terminal of any specific identifier, is not sent to any reciprocity wireless terminal of local near zone yet.In certain embodiments, the WAN wireless terminal power control signal that at least some sent comprises wireless terminal identifier, and the reciprocity transmission power control signal that is sent does not comprise wireless terminal identifier.

Fig. 5 operates in the flow chart 700 of supporting the illustrative methods of the Wireless Telecom Equipment that reciprocity signal transmits in the uplink band according to a plurality of embodiment.Operate in step 702 place and begin, in step 702, Wireless Telecom Equipment powers on and initialization, and proceed to step 704, in step 704, Wireless Telecom Equipment receives first signal from the base station in the downlink band of being used by the base station, for example with reference to and/or control signal.For the base station, it is simple that the downlink tone of use base station is brought the method for transmitting reference and/or control signal, and this is because the base station can easily comprise first signal that is sent to reciprocity wireless terminal the part as its broadcast singal collection or broadcast singal collection.In certain embodiments, first signal is a beacon signal.In other embodiments, first signal is non-beacon broadcast channel signal.The equity Wireless Telecom Equipment monitors first signal in the base station down link frequency bands, and uses the uplink band of this base station to come to exchange reciprocity signal with other peer node.In certain embodiments, reciprocity Wireless Telecom Equipment comprise simultaneously be tuned to the receiver ability of a plurality of frequency bands so that from following frequency band received signal: (i) downlink band of base station, be used for receiving from the base station with reference to and/or control signal; And the (ii) uplink band of base station, be used for receiving reciprocity signal from other reciprocity Wireless Telecom Equipment.In certain embodiments, the equity Wireless Telecom Equipment is supported in to specify and constantly only receives from single frequency band, and according to whether will from the broadcasting of base station receiving downlink with reference to and/or control signal or whether will receive the peer-to-peer communications signal from peer communications devices, come between the uplink band of the downlink band of base station and base station, to switch the receiver of this peer device.

Operation proceeds to step 706 from step 704.In step 706, Wireless Telecom Equipment is carried out received signal and is measured, for example signal power measurement.Operation proceeds to one or more in step 708 and 722.In certain embodiments, Wireless Telecom Equipment supports reciprocity signal to transmit, but does not support to transmit to for example uplink signal as the base station of a cellular network part, and in this embodiment, step 722 is not optional.In certain embodiments, Wireless Telecom Equipment is in office to be meant to fix time and supports one of peering pattern and honeycomb operator scheme, and at fixed time, operation can proceed to one of step 708 and step 722.In certain embodiments, Wireless Telecom Equipment supports concurrent reciprocity signal to transmit and cellular signal transmits, and operation can proceed to step 708 and step 722 from step 706.

Transmit for reciprocity signal, operation proceeds to step 708 from step 706, and for the uplink signal that is dealt into the base station, operation proceeds to step 722 from step 706.In step 708, Wireless Telecom Equipment is controlled to the reciprocity through-put power of small part equity signal transmission according to the measurement result of first signal.Step 708 comprises substep 710 and 712.In substep 710, Wireless Telecom Equipment uses first function to determine to allow the maximum reciprocity transmission power level of transmission, wherein compare with the second received signal power level that is higher than the first received signal power level, first function is limited to lower level at the first received signal power level with reciprocity through-put power.Then, in substep 712, Wireless Telecom Equipment is determined actual reciprocity transmission power level according to the reciprocity transmission power level of determined maximum with from the reciprocity signal that second peer communications devices receives.For example, second peer communications devices is following peer device, and communication equipment and this peer device of wherein carrying out the operation of flow process 700 have the peer-to-peer communications session.Therefore, in certain embodiments, reciprocity transmission power level is subjected to the base station signal that received and the influence of reciprocity signal.In certain embodiments, reciprocity signal transmits and/or is used for deriving at least one of following message: reciprocity channel condition information, reciprocity data-rate information, reciprocity data standby (backlog) information, reciprocity deferred message, noise information, error rate information, class of service information and reciprocity power control information.In certain embodiments, the reciprocity through-put power of reality is confined to be equal to or less than predetermined maximum reciprocity transmission power level.In certain embodiments, at least some conditions, for example high-priority users or certain grade of service, actual reciprocity transmission level can exceed sometimes, for example crosses, based on the reciprocity transmission power level of the determined maximum of reception base station signal.Operation proceeds to step 714 from step 708.

In step 714, Wireless Telecom Equipment with time of the asynchronism(-nization) that receives described first signal place, in downlink band, receive secondary signal from the base station.Then, in step 716, Wireless Telecom Equipment is carried out the secondary signal that is received and is measured, for example the power measurement of the secondary signal that receives.Operation proceeds to step 718 from step 716, and in step 718, Wireless Telecom Equipment determines that according to the measured power of second received signal Wireless Telecom Equipment should forbid sending the peer-to-peer communications signal.Operation proceeds to step 720 from step 718.In step 720, Wireless Telecom Equipment forbids sending the peer-to-peer communications signal till basis determines to allow Wireless Telecom Equipment to send reciprocity signal in uplink band from the power measurement of another signal of base station after definite communication equipment should forbid sending the peer-to-peer communications signal.

Return step 722, in step 722, Wireless Telecom Equipment controls to the through-put power of signal transmitted than the higher transmission power level of described reciprocity transmission power level that is used at least some reciprocity signal transmission.Step 722 comprises substep 724.In substep 724, in control during to the through-put power of described base station, Wireless Telecom Equipment uses second function to determine to send to the through-put power of the described signal of described base station based on the measured power of receive first signal, and wherein said second function is different with described first function.In certain embodiments, reciprocity transmission signal power level is than the low 10dB at least of transmission power level of the described signal that sends to the base station.

Fig. 6 is the diagrammatic sketch of the example wireless communication device 2900 (for example, supporting the wireless terminal such as mobile node of peer-to-peer communications in the WAN of base station uplink band) according to a plurality of embodiment.Example wireless communication device 2900 in the downlink band of base station from this base station received signal, wherein, this Wireless Telecom Equipment 2900 uses this signal to determine whether to allow to send reciprocity signal in the uplink band of base station and/or determines reciprocity transmission power level information, for example maximum reciprocity transmission power level.

Wireless Telecom Equipment 2900 comprises receiver module 2902, transmitter module 2904, user I/O equipment 2908, processor 2906 and the memory 2910 that is coupled via bus 2912, and wherein each element can pass through bus 2912 swap datas and information.Memory 2910 comprises routine 2918 and data/information 2920.

Processor 2906, CPU for example, executive routine 2918 also uses data/information 2920 in the memory 2910 to control the operation and the implementation method of Wireless Telecom Equipment 2900.

Receiver module 2902, OFDM receiver for example, be coupled to reception antenna 2914, wherein Wireless Telecom Equipment 2900 via reception antenna 2914 from base station received signal, the non-beacon signal of beacon signal or broadcast channel for example, the signal of described reception is used for determining reciprocity transmission power level information that the signal of described reception receives in the base station down link frequency bands.Receiver module 2902 also receives the peer-to-peer communications signal in the uplink band of base station.In certain embodiments, at some time durations, receiver module 2902 is from base station receiving downlink signal, for example distributing signal and service signal, wherein Wireless Telecom Equipment uses this base station as the tie point in the wide area network, and wherein communication equipment 2900 is as cellular communication apparatus.

Transmitter module 2904, for example the OFDM transmitter is coupled to transmitting antenna 2916, and wherein Wireless Telecom Equipment 2900 uses the base station uplink frequency band to send reciprocity signal to other Wireless Telecom Equipment via transmitting antenna 2916.In certain embodiments, during some time intervals, transmitter module 2904 sends uplink signal to the base station, and wherein Wireless Telecom Equipment is operated in the WAN operator scheme, for example the honeycomb operator scheme.

For example, user I/O equipment 2908 comprises microphone, keyboard, keypad, mouse, camera, switch, loud speaker, display etc.User I/O equipment 2908 allows the partial function at least of user input data/information, visit dateout/information and the control Wireless Telecom Equipment 2900 of Wireless Telecom Equipment 2900, for example attempts to initiate the peer-to-peer communications session.

Routine 2918 comprises Communications routines 2922 and wireless terminal control routine 2924.The various communication protocols that Communications routines 2922 realizes by Wireless Telecom Equipment 2900 uses.Wireless terminal control routine 2924 comprises measurement module 2926, authorization module 2940, reciprocity transmission control module 2941 and reciprocity through-put power control module 2928.In certain embodiments, for example, in not only supporting peer-to-peer communications but also supporting embodiment such as the WAN communication of cellular communication, wireless terminal control routine 2924 comprises wide area network through-put power control module 2936.

2926 pairs of received signals from the base station of measurement module are carried out and are measured.Signal (2942,2944) expression is to the input of measurement module 2926, and the output of information (2946,2948) expression measurement module 2926.According to a plurality of embodiment, the measurement of measurement module 2926 is signal power measurements.

Authorization module 2940 can and determine that according to the measurement power of reception base station signal Wireless Telecom Equipment 2900 should forbid sending reciprocity signal sometimes.Authorization module 2940 can and determine to allow Wireless Telecom Equipment 2900 to send reciprocity signal according to the measurement power of reception base station signal sometimes.Equity transmission licensing status 2950 is the output of authorization module 2940, and is used as input by reciprocity transmission control module 2941.

After definite communication equipment 2900 should be forbidden sending reciprocity signal, reciprocity transmission control module 2941 control transmitting set modules 2904 were to forbid sending the peer-to-peer communications signal, till determining to allow Wireless Telecom Equipment 2900 to send reciprocity signal.Therefore, used the reciprocity transmission control module 2941 of reciprocity transmission licensing status 2950 to send the enable/disable controller as equity.

Equity through-put power control module 2928 is controlled the reciprocity through-put power of at least some reciprocity signal transmission according to the measurement result of reception base station signal.Equity through-put power control module 2928 comprises that maximum reciprocity transmission power level determines that submodule 2930, actual reciprocity transmission power level determine the submodule 2932 and first function 2934.Equity through-put power control module 2928 is used first function 2934, wherein compare with the second received signal power level that is higher than the first received signal power level, described first function 2934 is limited to lower level at the first received signal power level with reciprocity through-put power.In a plurality of embodiment, reciprocity through-put power control module 2928 is limited to lower level according to bigger measured received signal power level with reciprocity through-put power.

Maximum reciprocity transmission power level determines that submodule 2930 uses first function 2934 to determine maximum reciprocity transmission power level.Actual reciprocity transmission power level determines that submodule 2932 determines actual reciprocity signal transmission power level according to the reciprocity transmission power level of described maximum with from the reciprocity signal that second peer communications devices receives.In a plurality of embodiment, the actually determined reciprocity transmission power level of submodule 2932 controls is less than or equal to maximum reciprocity transmission power level.

The through-put power that wide area network through-put power control module 2936 will send to signal of base station controls to than the bigger transmission power level of described reciprocity transmission power level that is used at least some reciprocity signal transmission.WAN through-put power control module 2936 comprises second function 2938, and they are different with first function 2934.The control that 2936 pairs of wide area network through-put power control modules send to the through-put power of described signal of base station comprises uses second function 2938 different with first function 2934 based on the transmission power level of determining to send to signal of base station from the measured received power level of signal of base station.

For example, the base station signal N 2944 that receives that transmits in the base station down link frequency bands by 2926 pairs of measurement modules measures, come the metrical information 2948 of picked up signal N, wherein this metrical information 2948 is input to reciprocity through-put power control module 2928 and WAN through-put power control module 2936.Peer modules 2928 is used first function 2934 to handle input 2948 and is obtained the reciprocity transmission power level 2952 of determined maximum, and WAN module 2936 uses second function 2938 to handle identical input 2948 and obtain determined maximum WAN transmission power level 2956, and it is the level higher than the reciprocity transmission power level of determined maximum 2952.

In a plurality of embodiment, reciprocity transmission signal power level is than the low 10dB at least of the transmission power level that sends to signal of base station.For example, for the value of identical measured base station signal, the reciprocity transmission power level 2952 of determined maximum is than determined maximum WAN transmission power level 2956 low 10dB at least.As another example, in certain embodiments, if wireless terminal is in a certain position and has determined reciprocity transmission power level information and WAN transmission power level information based on the identical base station signal measurement result that receives, the reciprocity transmission power level 2954 of then determined reality is than determined actual WAN transmission power level 2958 low 10dB at least.

Data/information 2920 comprise respectively measured and be used to determine transmission power level information a plurality of received signals that in the base station down link frequency bands, transmit from the base station (base station signal that receives 12942 ..., the base station signal N 2944 that receives), a plurality of corresponding signal measurement information (signal 1 metrical information 2946 ..., signal N metrical information 2948).Data/information 2920 also comprises equity transmission licensing status information 2950, and the current Wireless Telecom Equipment 2900 that whether allows of its indication sends reciprocity signal.Data/information 2920 also comprises: the reciprocity transmission power level 2952 of determined maximum, and it is the output of submodule 2930; And the reciprocity transmission power level 2954 of determined reality, it is the output of submodule 2932.

Sequential/frequency structure the information 2960 that is included as the part of data/information 2920 comprises: uplink band information 2962, for example WAN uplink bandwidth information, WAN uplink carrier information and up link WAN tone sets information; Downlink band information 2964, for example WAN downlink bandwidth information, WAN downlink carrier information and down link WAN tone sets information; And the information 2966 that identifies the position of measured base station signal.In this exemplary embodiment, the peer-to-peer communications signal transmits and uses the WAN uplink band that is being used by the base station, and wherein reciprocity signal causes interference to the WAN uplink signal that is sent to this base station.Reference and/or control signal that Wireless Telecom Equipment 2900 receives in downlink band are measured, and utilized this to measure and control the reciprocity transmission power level of Wireless Telecom Equipment in uplink band.Which WAN frequency band is information 2966 sign carry this signal, and in certain embodiments, information 2966 signs and the corresponding more specifying informations of this signal, a point in the sequential organization that for example circulates and/or be used for the concrete tone information of id signal.

In Wireless Telecom Equipment 2900 is supported a plurality of embodiment such as the WAN communication of cellular communications, data/information 2920 also comprises determined maximum WAN transmission power level information 2956 and determined actual WAN transmission power level information 2958, and it is the output of WAN through-put power control module 2936.

Fig. 7 is the flow chart 800 that operates in the illustrative methods of the Wireless Telecom Equipment of supporting peer-to-peer communications in the WAN uplink band of base station according to a plurality of embodiment, and it comprises the combination of Fig. 7 A and Fig. 7 B.Operate in beginning in the step 802, in step 802, Wireless Telecom Equipment powers on and initialization, and proceed to step 804, in step 804, Wireless Telecom Equipment receives first signal, for example beacon signal or non-beacon broadcast channel signal from the base station in the base station down link frequency bands.

Operation proceeds to step 806 from step 804.In step 806, Wireless Telecom Equipment is carried out received signal and is measured, for example signal power measurement.Operation proceeds to step 808 from step 806.

In step 808, Wireless Telecom Equipment is determined the transmission power level Control Parameter.In one exemplary embodiment, step 808 comprises substep 810 and 812.In a further exemplary embodiment, step 808 comprises substep 814 and 816.In a further exemplary embodiment, step 808 comprises

substep

814 and 818.

In substep 810, the wireless communications device accesses memory, this memory comprise stored with the corresponding transmission power level Control Parameter of the different grades of service, then, in substep 812, Wireless Telecom Equipment obtain stored with corresponding to the corresponding through-put power of the grade of service of described Wireless Telecom Equipment.

In substep 814, Wireless Telecom Equipment recovers controlling value according to described Wireless Telecom Equipment from the signal that described base station receives.In certain embodiments, the signal that therefrom recovers controlling value is first signal that receives in downlink band in step 804.Operation proceeds to substep 816 and 818 one from substep 814.In substep 816, Wireless Telecom Equipment uses the controlling value of being recovered as the transmission power level Control Parameter.Alternatively, in substep 818, Wireless Telecom Equipment comes computes transmit power level Control Parameter based on the controlling value of being recovered with the corresponding grade of service of wireless terminal.

Operation proceeds to step 820 from step 808.In step 820, Wireless Telecom Equipment is controlled at the reciprocity through-put power of at least some the equity transmission in the described uplink band according to the measurement result of first signal, the control of wherein reciprocity through-put power comprises according to first functions control equity through-put power, and wherein is included in according to first functions control equity through-put power also uses described definite transmission power level Control Parameter in described first function except the institute's received power level that uses described measurement.Operation proceeds to step 824 via connected node A 822 from step 820.

In step 824, Wireless Telecom Equipment was in the described downlink band from base station reception secondary signal, for example second beacon signal or the second non-beacon broadcast channel signal in the time with the asynchronism(-nization) that receives described first signal.Then, in step 826, Wireless Telecom Equipment carry out to be measured the reception secondary signal, for example to the power measurement of reception secondary signal.Operation proceeds to step 828 from step 826, and in step 828, Wireless Telecom Equipment determines that according to the measured power of second received signal Wireless Telecom Equipment should forbid in described uplink band sending the peer-to-peer communications signal.Operation proceeds to step 830 from step 8288.In step 830, Wireless Telecom Equipment is after definite communication equipment should be forbidden sending the peer-to-peer communications signal, forbid in described uplink band, sending the peer-to-peer communications signal, till basis determines to allow Wireless Telecom Equipment to send reciprocity signal from the power measurement of another signal of base station.

Fig. 8 is the diagrammatic sketch of the example wireless communication device 3000 (for example, supporting the wireless terminal such as mobile node of peer-to-peer communications in the WAN of base station uplink band) according to a plurality of embodiment.Example wireless communication device 3000 in the base station down link frequency bands from base station received signal, for example beacon signal or non-beacon broadcast channel signal, wherein Wireless Telecom Equipment 3000 utilizes this signal to determine whether to allow this Wireless Telecom Equipment 3000 to send reciprocity signal in the uplink band of base station and/or determines reciprocity transmission power level information, for example maximum reciprocity transmission power level.

Wireless Telecom Equipment 3000 comprises receiver module 3002, transmitter module 3004, user I/O equipment 3008, processor 3006 and the memory 3010 that is coupled via bus 3012, and wherein each element can pass through bus 3012 swap datas and information.Memory 3010 comprises routine 3018 and data/information 3020.

Processor 3006, CPU for example, executive routine 3018 also uses data/information 3020 in the memory 3010 to control the operation and the implementation method of Wireless Telecom Equipment 3000, for example method of the flow chart 800 of Fig. 7.

Receiver module 3002, OFDM receiver for example, be coupled to reception antenna 3014, wherein Wireless Telecom Equipment 3000 comes from base station received signal via this reception antenna 3014, for example beacon signal or non-beacon broadcast channel signal, the signal of described reception is used for determining reciprocity transmission power level information that described signal receives in the base station down link frequency bands.Receiver module 3002 also receives the peer-to-peer communications signal.Receiver module 3002 also receives the peer-to-peer communications signal in the uplink band of base station.Transmitter module 3004, for example the OFDM transmitter is coupled to transmitting antenna 3016, and wherein Wireless Telecom Equipment 3000 sends reciprocity signal via this transmitting antenna 3016 to other Wireless Telecom Equipment.

For example, user I/O equipment 3008 comprises microphone, keyboard, keypad, mouse, camera, switch, loud speaker, display etc.User I/O equipment 3008 allows the partial function at least of user input data/information, visit dateout/information and the control Wireless Telecom Equipment 3000 of Wireless Telecom Equipment 3000, for example attempts to initiate the peer-to-peer communications session.

Routine 3018 comprises Communications routines 3022 and wireless terminal control routine 3024.The various communication protocols that Communications routines 3022 realizes by Wireless Telecom Equipment 3000 uses.Wireless terminal control routine 3024 comprises measurement module 3026, power level Control Parameter determination module 3028, grade of service identification module 3034 and reciprocity through-put power control module 3036.

3026 pairs of received signals from the base station of measurement module are carried out and are measured, and wherein this signal receives in the base station down link frequency bands.The base station signal that receives 1 3044 expression to the input of measurement module 3026, and the output of signal 1 metrical information 3046 expression measurement modules 3026.According to a plurality of embodiment, the measurement of measurement module 3026 is signal power measurements.

Power level Control Parameter determination module 3028 is determined the transmission power level Control Parameter.In certain embodiments, power level Control Parameter determination module 3028 transmission power level Control Parameter are set to the Control Parameter 3048 obtained.In certain embodiments, power level Control Parameter determination module 3028 is determined the transmission power level Control Parameter according to the Control Parameter of being obtained 3048.In certain embodiments, power level Control Parameter determination module 3028 transmission power level Control Parameter are set to the Control Parameter recovered, for example decoded Control Parameter 3050.In certain embodiments, power level Control Parameter determination module 3028 is according to the Control Parameter of being recovered, and for example decoded Control Parameter 3050 is determined the transmission power level Control Parameter.In certain embodiments, power level Control Parameter determination module 3028 is determined the transmission power level Control Parameter according to the grade of service 3052 that is identified.In certain embodiments, power level Control Parameter determination module 3028 is determined the transmission power level Control Parameter according to the Control Parameter of being recovered of the Control Parameter of being obtained 3048 and the Control Parameter 3050 of for example having decoded.In certain embodiments, power level Control Parameter determination module 3028 is determined the transmission power level Control Parameter by one of following operation: i) use the value of being recovered as the transmission power level Control Parameter; And ii) come the computes transmit power Control Parameter based on the controlling value of being recovered with the corresponding grade of service of wireless terminal.

Grade of service identification module 3034 signs and Wireless Telecom Equipment 3000 corresponding current service grades.For example, in certain embodiments, some different users of communication equipment 3000 are corresponding to the different grades of service, for example emergency user, the associated user of government, service provider customer, 1 grade of enterprise customer, 2 grades of enterprise customers, 1 grade of personal user, 2 grades of personal users etc.In other example, the different grades of service can be considered corresponding to different communication device types, the different data type that will transmit, the different pieces of information amount that will transmit and/or different the delay.The current service grade that indication is identified in the grade of service 3052 that is identified.

Power level Control Parameter determination module 3028 comprises acquisition module 3030 and Control Parameter recovery module 3032.Acquisition module 3030 obtain stored with corresponding to the corresponding transmission power level Control Parameter of the grade of service of Wireless Telecom Equipment 3000.Therefore, acquisition module 3030 use the grade of service 3052 that identified as input, the access services grade is to power level Control Parameter map information 3060 and obtain and import the Control Parameter that the grade of service is associated.The Control Parameter of being obtained 3048 is the output of acquisition module 3030.

Control Parameter is recovered module 3032 and is recovered controlling value according to the signal that communication equipment 3000 receives from the base station.In certain embodiments, recover controlling value, the base station signal 1 3044 that wherein said signal is for example received according to the same signal of measuring by measurement module 3026.The Control Parameter of having decoded 3050 is the output that Control Parameter is recovered module 3032.In certain embodiments, the controlling value of being recovered is the level of interference indicator value.

Equity through-put power control module 3036 is controlled the reciprocity through-put power of at least some reciprocity signal transmission according to the measurement result of reception base station signal.Equity through-put power control module 3036 comprises that maximum reciprocity transmission power level determines that submodule 3038, actual reciprocity transmission power level determine the submodule 3040 and first function 3042.

Maximum reciprocity transmission power level determines that submodule 3038 uses first function 3042 to determine maximum reciprocity transmission power level.Actual reciprocity transmission power level determines that submodule 3040 determines actual reciprocity signal transmission power level according to the reciprocity transmission power level of described maximum with from the reciprocity signal that second peer communications devices receives.In a plurality of embodiment, the actually determined reciprocity transmission power level of submodule 3040 controls is less than or equal to maximum reciprocity transmission power level.

Except using the measured received power level, for example determine reciprocity transmission power level according to signal 1 metrical information 3046, reciprocity transmission power level control module 3036 also uses determined transmission power level Control Parameter 3054 for example to determine the reciprocity transmission power level 3056 of determined maximum.In certain embodiments, the part or all of function of power level Control Parameter determination module 3028 is comprised a part as reciprocity through-put power control module 3036.

Data/information 3020 comprises the received signal from the base station, the i.e. base station signal of being measured by measurement module 3026 that receives 1 3044 that receives in the base station down link frequency bands is so that obtain to be used for determining signal 1 metrical information 3046 of transmission power level information.Data/information 3020 comprises that also transmission power level Control Parameter 3054, the reciprocity transmission power level 3056 of determined maximum, the reciprocity transmission power level 3058 of determined reality, the grade of service are to power level Control Parameter map information 3060 and time sequence frequency structural information 3070.In certain embodiments, data/information 3020 comprise institute's identification service grade 3052, one or more in the Control Parameter of obtaining 3048 and the Control Parameter 3050 of having decoded.

The Control Parameter of obtaining 3048 be acquisition module 3030 output and with the grade of service to the control parameter value of power contorl parameters map information 3060 (control parameter value 13066 ..., control parameter value M 3068) one of corresponding.The Control Parameter of having decoded 3050 is that Control Parameter is recovered the output of module 3032 and the information that expression is recovered according to the reception base station signal.In certain embodiments, the base station signal that receives of recovering information institute basis is the same base signal that carries out power measurement, for example the base station signal that receives 1 3044.In certain embodiments, recovering controlling value is the level of interference indicator value.

Institute's identification service grade 3052 is the output of grade of service identification module 3034, and is used for as the input to acquisition module 3030.Use institute's identification service grade 3052 to select the control corresponding parameter value.For example, if institute's identification service grade 3052 indication grade of service M 3064, then acquisition module 3030 obtains the control parameter value M 3068 of storage in obtaining Control Parameter 3048.

Transmission power level Control Parameter 3054 is the output of power level Control Parameter determination module 3028.According to institute's identification service grade 3052, one or more in the Control Parameter of obtaining 3048 and the Control Parameter 3050 of having decoded determine transmission power level Control Parameter 3054.Equity through-put power control module 3036 uses transmission power level Control Parameter 3054 as input.

The output that the reciprocity transmission power level 3056 of determined maximum is maximum reciprocity transmission power level submodules 3038, and the reciprocity transmission power level 3058 of determined reality is the output that actual reciprocity transmission power level is determined submodule 3040.

The grade of service to power level Control Parameter map information 3060 comprise a plurality of grades of service (grade of service 1 3062 ..., grade of service M 3064) and a plurality of control corresponding parameter value (control parameter value 1 3066 ..., control parameter value M 3068).

Sequential/frequency structure the information 3070 that is included as the part of data/information 3020 comprises: uplink band information 3072, for example WAN uplink bandwidth information, WAN uplink carrier information and up link WAN tone sets information; Downlink band information 3074, for example WAN downlink bandwidth information, WAN downlink carrier information and down link WAN tone sets information; And the information 3076 that identifies the position of measured/decoded base station signal.In this exemplary embodiment, the peer-to-peer communications signal transmits and uses the WAN uplink band that is being used by the base station, and wherein reciprocity signal causes interference to the WAN uplink signal that is sent to this base station.The signal that Wireless Telecom Equipment 3000 receives in the WAN downlink band of base station is measured, and utilized this to measure and control Wireless Telecom Equipment 3000 reciprocity transmission power levels.In certain embodiments, signal and the decoded recovering information (for example being used for recovering to disturb indicator value) that is received by Wireless Telecom Equipment 3000 also is used to control Wireless Telecom Equipment equity transmission power level.In certain embodiments, the same base signal that is used for power measurement is a decoded signal, wherein according to this decoded signal come recovering information.During other is implemented at some, have two different received signals from the base station, the received power level of a signal is measured and be utilized, and another signal transmits decoded power control information, for example decoded interference indicator value.In certain embodiments, in the WAN uplink band, transmit base station signal, wherein recover for example information of level of interference indicator value according to this base station signal, and in other embodiments, this signal of transmission in the WAN downlink band.Information 3076 which WAN frequency band of sign carry measured base station signal and which WAN frequency band carries the base station signal that is used for the information recovery.In certain embodiments, information 3076 sign and the corresponding more specifying informations of one or more signals, a point in the sequential organization that for example circulates and/or be used to identify the concrete tone information of these one or more signals.

Fig. 9 shows the diagrammatic sketch 300 of an exemplary embodiment, and it comprises communication system 302, describes the form 306 that frequency band uses the form 304 of information and exemplary reciprocity wireless terminal transmission power level information is shown.Example communication system 302 comprises base station 308, and it has the corresponding cellular coverage by sub-district 310 expressions.Other network node and/or internet are coupled to via the network link 309 of for example optical fiber link in base station 308, wherein for example other base station, router, AAA node, home agent node, Control Node etc. of other network node.In communication system 302, also have a plurality of supporting cellular wireless terminal in communication (WT 1312 ..., WTN 314).Honeycomb WT (312,314) is coupled to base station 308 via the wireless road (316,318) that connects respectively.

The wireless terminal (WT 1`, WT 2`328, WT 3`, WT 4`340) that in communication system 302, also has a plurality of support peer-to-peer communicationss.WT 1` is illustrated in two time point places, and is expressed as unit 324 and is expressed as unit 326 at time t1 at time t0.Indicate WT 1` to move by arrow 334.WT 3` is illustrated in two time point places, and is expressed as unit 336 and is expressed as unit 338 at time t1 at time t0.Indicate WT 3` to move by arrow 346.Indicate peer-to-peer communications between WT 1` and the WT2`328 by arrow 330 and 332.Indicate peer-to-peer communications between WT 3` and the WT 4`340 by

arrow

342 and 344.

The base station sends broadcast singal 320, for example beacon signal or non-beacon broadcast channel signal in its down link WAN frequency band.To this broadcast singal, for example beacon signal detects and measures by reciprocity wireless terminal.The equity wireless terminal (for example uses the received broadcast signal, beacon signal) power measurement determines whether to allow this wireless terminal to send reciprocity signal in corresponding WAN uplink band, and when allowing in corresponding uplink band, to send, use this power measurement to come the control transmission power level, maximum transmission power level for example.The exemplary reciprocity restricted area of dashed circle 322 indications around the base station 308 forbids that in this zone reciprocity wireless terminal sends signal.In zone near base station 308, for attempt to from the wireless terminal that is operated in honeycomb mode (312 ..., 314) the uplink signal base station of recovering and decoding, transmission from the grade of utilizing in the reciprocity signal transmission of being in of reciprocity wireless terminal can produce excessive interference, does not therefore allow reciprocity wireless terminal transmission.

Now band information form 304 will be described.First row 348 indication service band A conducts: the cellular downlink frequency band of the signal that being intended to of (i) being used for sending from the base station received by cellular radio terminals; And (ii) be used to transmit broadcasting reference and/or the control signal that is intended to by reciprocity wireless terminal use, and for example be intended to be used to control the beacon signal of peer-to-peer communications, for example the power of the peer-to-peer communications in corresponding uplink band is controlled.Secondary series 350 indication service band B conducts: (i) be used for the cellular uplink frequency band of the signal that receives by the base station from being intended to of sending of cellular radio terminals; And (ii) be used for sending and the reciprocity frequency band of the signal that is intended to receive by reciprocity wireless terminal from reciprocity wireless terminal.

Reciprocity wireless terminal power information form 306 will be described now.The exemplary reciprocity wireless terminal (WT 1`, WT 2`, WT 3`, WT 4`) that first row, 352 signs are being described.Secondary series 354 identified time point, t0 or t1.The 3rd row 356 sign with corresponding to the corresponding transmission control level of the wireless terminal information in the going together mutually of indicated time in going together mutually.The transmission power level of the information indication WT1` of form 306 is along with increasing from time t0 to time t1.Can observe, move away base station 308, and for WT 1`, can expect that at this time durations the measured power level of beacon signal 320 can reduce at this time durations WT 1`.Can also observe, at this time durations, WT 1` remains on beyond the restricted area 322.The information of form 306 also indicates the transmission power level of WT 3` along with reducing from time t1 to time t0.Can observe, move to base station 308 directions, and for WT 3`, can expect that at this time durations the measured power level of beacon signal 320 can increase at this time durations WT 3`.Can also observe, at this time durations, WT 3` remains on beyond the restricted area 322.The power level of describing in form 306 can be the maximum transmission power level that allows.Alternatively, the power level of describing in form 306 can be the actual transmission power level.

In certain embodiments, at least some wireless terminals are supported a plurality of operator schemes, for example equity and cellular communication operator scheme.

Figure 10 is the diagrammatic sketch according to the example wireless communications 400 of a plurality of embodiment.Example wireless communications 400 comprise at least one base station 402, support a plurality of wireless terminals of peer-to-peer communications (wireless terminal 1 404 ..., wireless terminal N 410), support a plurality of wireless terminals that the wide area network signal transmits (wireless terminal 2406 ..., wireless terminal n 412) and a plurality of wireless terminals of not only having supported reciprocity signal to transmit but also support the wide area network signal to transmit (wireless terminal 3408 ..., wireless terminal M 414).

Base station 402 comprises reciprocity interference management module 416, interference signal measurement module 418 and transmitter module 420.Equity interference management module 416 is determined reciprocity transmission power level controlling value.Transmitter module 420 sends determined reciprocity transmission power level controlling value, for example as the indicator value of being transmitted.Interference signal measurement module 418 is measure signal interference during empty (null) uplink transmission time section, and measured signal interfere information is offered reciprocity interference management module 416.

Wireless terminal 1404 comprises received signal power measurement module 422, reciprocity signal transmission power control module 424, difference update module 426 and memory 428.In certain embodiments, memory 428 comprises the predetermined difference indicator information 430 of being stored.The predetermined difference indicator information 430 of being stored comprise a plurality of designators that can send by the base station (designator 1 442 ..., designator N 444), and corresponding respectively difference value (difference 1 446 ..., difference N 448).

Received signal power measurement module 422 is measured the power of the signal that (for example, base station 402) receives from the base station, and received signal receives in the base station down link frequency bands.Equity signal transmission power control module 424 is according to first function, based on the reciprocity signal transmission power level of controlling from the measured power of signal of base station in the base station uplink frequency band.In a plurality of embodiment, reciprocity signal transmission power level is the maximum reciprocity signal transmission power level that allows.(for example, base station 402) receives the difference indicator value to difference update module 426 from the base station, and upgrades first function based on the indicator value that is received.In certain embodiments, this difference is scheduled volume, and the memory 428 of storage indicator and corresponding predetermined difference is conducted interviews and uses the value of being visited by first function.

Wireless terminal 2 406 comprises received signal power measurement module 432 and wide area network signal transmission power control module 434.Received signal power measurement module 432 is measured the power level of the signal that (for example, the base station 402) receive from the base station in downlink band.Wide area network signal transmission power control module 434 is according to second function, control the wide area signal transmission power level base station uplink frequency band relevant with wireless terminal 2 406 based on the measured power of the signal that receives from the base station in the base station down link frequency bands, wherein second function is different with first function.In certain embodiments, wide area signal transmission power level is maximum wide area signal transmission power level.In a plurality of embodiment, for the designated value of measured received signal power, compare first function, second function is determined higher transmission power level.In some this embodiment, for the designated value of measured received signal power, between the through-put power of being determined by first and second functions is that the difference of unit is 10dB at least with dB.

Wireless terminal 3 408 comprises received signal power measurement module 436, reciprocity signal transmission power control module 438 and wide area network signal transmission power control module 440.Received signal power measurement module 436 is measured the power level of the signal that receives from the base station in downlink band.Equity signal transmission power control module 438 is according to first function, based on the reciprocity signal transmission power level of controlling from the measured power of signal of base station in the base station uplink frequency band.Wide area network signal transmission power control module 440 is according to second function, and based on the wide area signal transmission power level of controlling from the measured power of signal of base station in the base station uplink frequency band, wherein second function is different with first function.In a plurality of embodiment, for the designated value of measured received signal power, compare first function that uses by module 438, determine higher transmission power level by second function that module 440 is used.In some this embodiment, for the designated value of measured received signal power, between the through-put power of being determined by first and second functions is that the difference of unit is 10dB at least with dB.In certain embodiments, first function that is used by the module 438 of WT 3 408 is identical with first function that is used by the module 424 of WT 1 404.In certain embodiments, second function that is used by the module 440 of WT 3 408 is identical with second function that is used by the module 434 of WT 2 406.

Figure 11 is a flow chart 500 of operating the illustrative methods of base station according to a plurality of embodiment.The operating in the step 502 beginning and proceed to step 504 of this illustrative methods.In step 504, base station stored interference budget information.Operation proceeds to step 506 and step 508 from step 504.

In step 508, wherein this step is carried out carrying out on (ongoing) basis, to the base station operate with keep with at least one adjacent base station synchronously, thereby keep up link empty slot between the adjacent base station synchronously.In a plurality of embodiment, the up link empty slot is the following time period, and at least a portion of the uplink bandwidth that will do not used by the base station wittingly in this time period is used for sending uplink signal to this base station.

Return step 506, in step 506, ambient interferences is measured in the base station during the up link empty slot.Then, in step 510, the first uplink transmission power controlling value is determined according to measured ambient interferences in the base station.Step 510 comprises substep 512.In substep 512, the base station is used the interference budget information stored and is generated the first uplink transmission power controlling value in conjunction with described measured ambient interferences.Substep 512 comprises substep 514,516,518 and 520.In substep 514, the base station determines whether measured ambient interferences surpasses the interference budget limit by the interference budget information indication of being stored.If surpassed budget limitation, then operate from substep 514 and proceed to substep 516; Otherwise operation proceeds to substep 518 from substep 514.

In substep 516, previous uplink transmission power controlling value is revised in the base station, and the through-put power controlling value of described modification limits reciprocity transmission power level greater than previous uplink transmission power controlling value.Return substep 518, in substep 518, the base station determines whether measured ambient interferences is lower than the described interference budget limit by the interference budget information indication of being stored, for example low predetermined threshold at least.If determine that in substep 518 measured ambient interferences is lower than the interference budget limit, make to satisfy examination criteria, then operate from substep 518 and proceed to substep 520.In substep 520, previous uplink transmission power controlling value is revised in the base station, and the through-put power controlling value of described modification is increased to than the higher level of level by previous through-put power controlling value control reciprocity transmission power level.

Operation proceeds to step 522 from step 510, and in step 522, the base station sends the described determined first uplink transmission power controlling value in downlink band.

Figure 12 is a flow chart 600 of operating the illustrative methods of base station according to a plurality of embodiment.The operating in the step 602 beginning and proceed to step 604 of this illustrative methods.In step 604, base station stored interference budget information.Operation proceeds to step 606 and step 608 from step 604.

In step 608, wherein this step carries out carrying out on the basis, to the base station operate with keep with at least one adjacent base station synchronously so that keep up link empty slot between the adjacent base station synchronously.In a plurality of embodiment, the up link empty slot is the following time period, and at least a portion of the uplink bandwidth that will do not used by the base station wittingly in this time period is used for sending uplink signal to this base station.

Return step 606, in step 606, ambient interferences is measured in the base station during the first up link empty slot.Then, in step 610, the first uplink transmission power controlling value is determined according to measured ambient interferences in the base station.Operation proceeds to step 612 from step 610.In step 612, the base station sends the described determined first uplink transmission power controlling value in downlink band.Operation proceeds to step 614 from step 612.

In step 614, ambient interferences is measured in the base station during the second up link empty slot, then in step 616, the base station is according to determining variation in the measured ambient interferences with the first up link empty slot and the corresponding measurement result of the second up link empty slot.Operation proceeds to step 618 from step 616.

In step 618, the base station according to corresponding measured ambient interferences of the second up link empty slot and measured ambient interferences in institute determine that variation determines the second uplink transmission power controlling value, in step 620, the base station sends the determined second uplink transmission power controlling value in downlink band then.Operation proceeds to step 622 from step 620.

In step 622, ambient interferences is measured in the base station during the 3rd up link empty slot, and in step 624, the base station is according to determining variation in the measured ambient interferences with the second up link empty slot and the corresponding measurement result of the 3rd up link empty slot.Operation proceeds to step 626 from step 624, and in step 626, the difference between the first uplink transmission power controlling value and the second uplink transmission power controlling value is determined in the base station.Operation proceeds to step 628 from step 626.

In step 628, the base station according to and the corresponding measured ambient interferences of the 3rd up link empty slot, determined ambient interferences measured between the second and the 3rd up link empty slot in variation and the difference between determined two previous power control values that send, determine the 3rd uplink transmission power controlling value.Operation proceeds to step 630 from step 628, and in step 630, the base station sends determined the 3rd uplink transmission power controlling value.

Figure 13 is the diagrammatic sketch according to the exemplary base 2800 of a plurality of embodiment.Exemplary base 2800 management are disturbed from the reception of reciprocity wireless terminal, wherein should send in the identical air link resources of the wide area network uplink communication that is used for base station 2800 by the equity wireless terminal.Exemplary base 2800 determines and sends the up-link power control signal that in downlink band wherein this signal is used for determining its transmission power level by reciprocity wireless terminal.In certain embodiments, the up-link power control signal that is sent in downlink band by base station 2800 also is used for the control transmission power level by wireless terminal, and wherein this wireless terminal uses this base station to send uplink signal as network connection point and to this base station.

Exemplary base 2800 comprises receiver module 2802, transmitter module 2804, processor 2806, I/O interface 2808 and the memory 2810 that is coupled via bus 2812, and wherein each element can pass through bus 2812 swap datas and information.

Receiver module 2802, OFDM receiver for example, be coupled to reception antenna 2814, wherein from wireless terminal receiving uplink signal, wherein this wireless terminal for example is operated in honeycomb mode and uses the wireless terminal of base station 2800 as network connection point via this reception antenna 2814 in base station 2800.Receiver module 2802 also receives the interference from the peer communications devices that is operated in local near zone.In certain embodiments, receiver module 2802 also receives from the interference in the uplink signal transmission of the cellular device in the neighbor cell.

Transmitter module 2804, for example the OFDM transmitter is coupled to transmitting antenna 2816, and wherein base station 2800 sends down link signal via this transmitting antenna 2816 to the wireless terminal that uses base station 2800 as network connection point.Transmitter module 2804 also sends uplink transmission power controlling value signal in the base station down link frequency bands, wherein this signal is used to control its transmission power level by reciprocity wireless terminal, this equity wireless terminal is used for reciprocity signal transmission with the uplink band of base station, and therefore base station receiver module 2802 is produced interference.

Memory 2810 comprises routine 2818 and data/information 2820.Processor 2806, CPU for example, executive routine 2818 also uses data/information 2820 in the memory 2810 to control the operation and the implementation method of base station 2800.Routine 2818 comprises Communications routines 2822, interference measurement module 2824, wireless terminal power control module 2826 and wireless terminal power control signal transport module 2830.In certain embodiments, routine 2818 comprises one or more in wide area network synchronization module 2828 and the interference type separation module 2832.

The various communication protocols that Communications routines 2822 realizes by base station 2800 uses.Interference measurement module 2824 is measured ambient interferences during the up link empty slot.Wireless terminal power control module 2826 is determined the uplink transmission power controlling value according to measured ambient interferences.In a plurality of embodiment, wireless terminal power control module 2826 is used the interference budget information of being stored and is determined the up-link power controlling value in conjunction with measured ambient interferences, so that generation uplink transmission power controlling value.Wireless terminal power control signal transmission control module 2830 controls transmitter module 2804 to send the uplink transmission power control signal that is generated, for example first uplink transmission power controlling value 2850.In certain embodiments, control module 2830 controls transmitter module 2804 so that send the uplink transmission power controlling value that is generated according to round-robin scheduling in the base station down link frequency bands.In certain embodiments, control module 2830 is come control transmission according to level of interference information.In certain embodiments, wireless terminal power control module 2826 is compared previous measured change according to measured ambient interferences and is determined the uplink transmission power controlling value with measured ambient interferences.In certain embodiments, wireless terminal power control module 2826 is determined the uplink transmission power controlling value according to the difference between two previous power control values that send.

In certain embodiments, wireless terminal power control module 2826 is determined the uplink transmission power controlling value by following operation, this operation comprises revises previous uplink transmission power controlling value when measured ambient interferences surpasses the interference budget limit of being indicated by the interference budget information of being stored, the through-put power controlling value of described modification limits reciprocity transmission power level greater than previous uplink transmission power controlling value.In certain embodiments, wireless terminal power control module 2826 is determined the uplink transmission power controlling value by following operation, this operation comprises revises previous uplink transmission power controlling value when measured ambient interferences is lower than the interference budget limit of being indicated by the interference budget information of being stored, the through-put power controlling value of described modification increases reciprocity transmission power level so that it is greater than previous uplink transmission power controlling value.In a plurality of embodiment, when the low predetermined threshold at least of the described interference budget limit of described measured interference ratio, carry out variation to higher level.

Therefore, base station 2800 uses the numerical value of uplink transmission power controlling value to regulate the transmission power level of peer-to-peer communications, thereby suppresses the interference to the uplink signal in the base station uplink frequency band that is sent to base station 2800.

Wide area network synchronization module 2828 be used to keep with at least one adjacent base station synchronously so that keep up link empty slot between the adjacent base station synchronously.

Interference type separation module 2832 is used to obtain the estimation to the uplink channel interference contribution amount that is derived from peer-to-peer communications.In certain embodiments, as equity being disturbed a part of separating from other interference source (for example with the synchronous neighbor cell in base station 2800 not sending the cellular communication apparatus of uplink signal), interference type separation module 2832 is imported the variation level controlled and the institute observation effect of calculating in interferometry during the subsequent uplink empty slot wittingly in the uplink transmission power controlling value.

Data/information 2820 comprise sequential/frequency structure information 2834, the interference budget information 2840 of being stored, a plurality of interferometry information set (uplink interference measurements information 1 2846 ...,, uplink interference measurements information N 2848) and a plurality of uplink transmission power controlling value that generates (the first uplink transmission power controlling value 2850 ...., M uplink transmission power controlling value 2852).

Sequential/frequency structure information 2834 comprises circulation sequential structural information 2836.Circulation sequential structural information 2836 comprises the information 2838 of sign up link empty slot.In certain embodiments, the up link empty slot is corresponding to the following time period, and at least a portion of the uplink bandwidth that will do not used by described base station wittingly in this time period is used for sending uplink signal to this base station.In certain embodiments, the up link empty slot is the following time period, uses the wireless terminal of base station 2800 tie points during this time period, and for example cellular communication apparatus is forbidden sending uplink signal to this base station 2800 wittingly.During this time period, reciprocity wireless terminal signal transmits and continues to use uplink band.Therefore, ambient interferences can be measured in base station 2800 during this time period.If adjacent base station is synchronous, thereby make that the up link empty slot is concurrent, then measured noise can transmit relevant with reciprocity signal during these time periods.Yet, if adjacent base station is not synchronous, and use identical uplink band, measured interference comprises the interference from reciprocity wireless terminal and the cellular communication apparatus corresponding with adjacent base station during this up link empty slot.

The interference budget information 2840 of being stored comprises ambient interferences prescribed information 2842 and threshold information 2844.

Figure 14 comprises that according to a plurality of embodiment example communication system 902 and frequency band use the diagrammatic sketch 900 of form 904.In example communication system 902, wide area network and peer-to-peer communications shared bandwidth.In a plurality of embodiment, wide area network is corresponding to the system that is disposed, and peer capabilities comprises expansion and/or upgrade feature.In certain embodiments, example communication system 902 initial deployment are for comprising WAN and peer capabilities.Frequency band use form 904 indications can with example system 902 corresponding two kinds of embodiment types.In the first embodiment type, be type A embodiment, wide area network uses Frequency Division Duplexing (FDD) (FDD) wide area fdd uplink frequency band and the movable shared bandwidth of peer-to-peer communications, and WAN FDD downlink band is transmitted the WAN down link signal and is used for the broadcast singal that peer device is controlled.In the second embodiment type, be type B embodiment, wide area network uses the time division duplex (TDD) of same frequency band for up link and down link, wide area frequency band and peer-to-peer communications are movable shares uplink time slot, and wide area network is shared downlink time slots is used for peer device control with transmission broadcast singal.Therefore, in these two kinds of embodiment types, uplink signal from wan communication equipment transmits and may disturb the peer-to-peer communications signal reception generation of peer communications devices, and the peer-to-peer communications signal between the peer communications devices may receive the generation interference to the wide area network uplink signal at the place, base station.In addition, the control signal that being intended to of sending from the base station is used for peer device is to use the resource that is preserved for down link WAN signaling usually to transmit.

Example communication system 902 comprises base station 906, wide area network wireless terminal 908 (for example honeycomb mobile node), the first reciprocity wireless terminal 910 and the second reciprocity wireless terminal 912.For ease of explanation, suppose that wide area network wireless terminal 908 sends uplink signal 914 to base station 906.Base station 906 receives this signal and measures received signal P _C1For reciprocity wireless terminal 2 912, signal 914 is considered as interference 916 from wide area network wireless terminal 908.The hypothesis first reciprocity wireless terminal 910 sends reciprocity signal 918 to reciprocity wireless terminal 2 912 now.For base station 906, signal 918 is considered as interference 920 from the first reciprocity wireless terminal 910.Base station 906 receives this interference and measures received signal P _P1

According to a plurality of embodiment, wide area system is provided priority, and disturb in the management of place, base station.For example, select power control value α to reach such as (P _P1/ P _C1The purpose of)≤α.In some this embodiment, α be such as-10dB ,-20dB or-the such value of 30dB.Although in example, be described at a reciprocity wireless terminal, wherein should the equity wireless terminal pair transmitting corresponding base station with a wide area network wireless terminal uplink signal receives and causes interference, but it should be noted that, can and exist a plurality of reciprocity wireless terminals to send and produce interference sometimes, and can and exist a plurality of wide area network wireless terminals to send uplink signal sometimes to the base station, wherein this uplink signal is attempted to recover in this base station.Therefore, the control factor α that the base station is determined is used to manage interference can and depend on a plurality of users sometimes.In certain embodiments, control factor α depends on number of users, for example Huo Dong wan user's number and/or movable peer users number.

Figure 15 shows the diagrammatic sketch 1002 of the feature of a plurality of embodiment, and wide area network has the dead time section in these embodiments, and the base station monitors and measure reciprocity noise in this dead time section.Exemplary diagram 1002 comprises base station 1004, and it has corresponding cellular coverage 1006.In certain embodiments, this cellular coverage has at least 1 kilometer radius.In this sub-district, a plurality of wireless terminals (WT A 1008, WT B 1010, WT C 1012, WT D1014) that are operated in the honeycomb operator scheme are arranged.These wireless terminals (1008,1010,1012,1014) are 1004 receiving downlink signals and send uplink signals to base station 1004 from the base station.Yet this time point is corresponding to the wide area network up link dead time section of having a mind to, and wide area network wireless terminal in this time period (1008,1010,1012,1014) does not send any uplink signal.

Sub-district 1006 also comprises a plurality of wireless terminals (WT 1 1016, WT 2 1018, WT 3 1020, WT 4 1022) that are operated in the peering pattern.During this time period, do not limit peer-to-peer communications.Equity WT 1 1016 is just in time sending reciprocity signal 1024 to reciprocity wireless terminal 2 1018.For the receiver in the base station 1004, the reciprocity signal 1024 that this sent is considered as reciprocity noise interferences 1026.Equity WT 3 1020 is just in time sending reciprocity signal 1028 to reciprocity wireless terminal 4 1022.For the receiver in the base station 1004, the reciprocity signal 1028 that this sent is considered as reciprocity noise interferences 1030.

Figure 16 shows the diagrammatic sketch 1102 of the certain characteristics of a plurality of embodiment, and it is the continuity of the example of Figure 15.In sub-district 1006, power control value α is disturbed to determine according to measured equity in base station 1004.Then, the base station uses WAN downlink air link circuit resource to broadcast this controlling value α to be used for wireless terminal via signal 1104.In this exemplary embodiment, the single value of base station broadcast controlling value α; Then, this value can and differently be used by the different wireless communication equipment of receiving broadcast signal 1104 sometimes.In this example, the wireless terminal collection (WT A 1008, WT B 1010, WT C 1012, WT D 1014) that is operated in honeycomb mode uses the first power control function f ₁(α) 1106 determine the transmission power level Control Parameter; And the wireless terminal collection (WT 1 1016, WT 2 1018, WT 3 1020, WT 4 1022) that is operated in ad-hoc mode uses the second power control function f ₂(α) 1108 determine the through-put power Control Parameter.

Figure 17 is the diagrammatic sketch 1200 of the exemplary look-up table of controlling value, and it shows the feature of a plurality of embodiment.In certain embodiments, wireless terminal receives the broadcasting power controlling value from the base station in downlink band, and determines the power control value that it will use oneself according to the value that is received and the corresponding grade of service.The different grades of service can and sometimes corresponding to the different user of the dissimilar of different service types, service and/or service, and be mapped to the different grades of service.For example, in certain embodiments, exemplary different priorities is relevant with different service types, and these different service types are voice, delay-sensitive data and the transport-type data of doing the best for example.For example, exemplary different COS comprise urgency communication service and common communications.For example, different user types comprises: high-priority users, such as robber and police, fire alarm, emergency services; The medium priority user of customized high grade of service planning; And the low priority user of customized low grade of service planning.Therefore, in certain embodiments, revise the power control value that is recovered according to priority level.

In example table 1200, the exemplary controlling value α that receives of first row, 1202 indications, the exemplary respective service grade 1 controlling value α of secondary series 1204 indications ₁, the exemplary respective service grade 2 controlling value α of the 3rd row 1206 indications ₂, and the exemplary respective service grade 3 controlling value α of the 4th row 1208 indications ₃If it is (grade of service 1, the grade of service 2, the grade of service 3) for-10dB and its corresponding grade of service that broadcasting power controlling value that the wireless terminal of look-up tables 1200 receives from the base station is used in the indication of first row 1210, then this wireless terminal respectively will (10dB ,-15dB ,-20dB) be used for its power control value.If it is (grade of service 1, the grade of service 2, the grade of service 3) for-20dB and its corresponding grade of service that broadcasting power controlling value that the wireless terminal of look-up tables 1200 receives from the base station is used in the indication of second row 1212, then this wireless terminal respectively will (20dB ,-25dB ,-30dB) be used for its power control value.If it is (grade of service 1, the grade of service 2, the grade of service 3) for-30dB and its corresponding grade of service that broadcasting power controlling value that the wireless terminal of look-up tables 1200 receives from the base station is used in the third line 1214 indication, then this wireless terminal respectively will (30dB ,-35dB ,-40dB) be used for its power control value.

Figure 18 is a flow chart 1300 of operating the illustrative methods of base station (for example, its uplink bandwidth also is used for the base station that reciprocity signal transmits) according to a plurality of embodiment.For example, this base station is the base station of operating as the part of cellular communication system, wherein makes to operate between the adjacent base station synchronously in this cellular communication system.Helping synchronously between the adjacent base station, realized unified up link empty slot, can control the transmission of wide area network wireless terminal cellular uplink signal and stop uniformly in this time period.These empty slots are used to measure ambient interferences.In such an embodiment, can come approximate representation ambient interferences W by W=thermal noise+reciprocity noise.Interference need be controlled in the base station, and determine and in downlink band broadcasting power control factor α so that receive by near the wireless terminal it.

Operate in beginning in the step 1302, in step 1302, the base station powers on and initialization.In certain embodiments, initialization comprises that use is broadcast to the default value of the power control factor α of wireless terminal in downlink band.Operation proceeds to step 1304 from beginning step 1302.In step 1304, ambient interferences W is measured in the base station during the empty time interval, and its hollow time interval is the uplink null time interval for example, in this time interval the WAN wireless terminal is controlled with inhibit signal and transmits.

Operation proceeds to step 1306 from step 1304.In step 1306, power control factor α is determined according to measured ambient interferences in the base station.In a plurality of embodiment, employed function makes along with W increases, for W to small part non-NULL scope, α also increases.In certain embodiments, step 1306 determines to comprise with the interference budget information of being stored and compares.Operation proceeds to step 1308 from step 1306.

In step 1308, determined power control factor α is broadcasted in the base station in downlink band.Operation proceeds to step 1304 from step 1308, carries out another ambient interferences and measure in step 1304.

In certain embodiments, carry out and use a plurality of ambient interferences measurements accordingly, control factor with the definite power of institute that generation is broadcasted with a plurality of empty time intervals.Therefore, in certain embodiments, before the determined power control of the broadcasting factor, the base station is carried out with one group of corresponding one group of background of the empty time interval and is measured for example repeatedly repetition of step 1304 in step 1308.

Figure 19 is a flow chart 1400 of operating the illustrative methods of base station (for example, its uplink bandwidth also is used for the base station that reciprocity signal transmits) according to a plurality of embodiment.For example, this base station is the base station of operating as the part of cellular communication system, wherein makes to operate between the adjacent base station synchronously in this cellular communication system.In the up link sequential organization that use the base station, the base station utilizes the up link empty slot to measure ambient interferences.Yet, because the operation in the neighbor cell is not synchronous, so the level of interference from neighbor cell can change in time, thus make with adjacent base station by synchronously and be controlled as the simultaneous situation of uplink null of having a mind to is compared, more be difficult to extract ambient interferences to aliquot.Interference need be controlled in the base station, and determines and broadcasting power control factor α, so that received by near the wireless terminal it.According to the feature of this embodiment, the base station changes the broadcasting power control factor of the input that the conduct of its broadcasting controls wittingly so that measure response.

Operate in beginning in the step 1402, in step 1402, the base station powers on and initialization, and operation proceeds to step 1404.In step 1404, the base station is broadcasting power control factor α in downlink band ₁At this moment, α ₁It is the default value that from initialization, obtains.Then, in step 1406, ambient interferences W is measured in the base station during the empty time interval ₁, wherein should the sky time interval empty time interval of up link WAN for example, ban use of the wireless communication terminal of this base station to send uplink signal in the time interval wittingly at this sky.Operation proceeds to step 1408 from step 1406.

In step 1408, power control factor is adjusted to determine second power control factor α in the base station ₂For example, α ₂=α ₁+ Δ α, wherein Δ α be nonzero value and can be on the occasion of or negative value.Usually, the value of Δ α is α ₁The sub-fraction of value for example is less than or equal to α ₁25%.Operation proceeds to step 1410 from step 1408, and in step 1410, the base station sends new power control factor α ₂Operation proceeds to step 1412 from step 1410.

In step 1412, ambient interferences W is measured in the base station during the empty time interval ₂Operation proceeds to step 1414 from step 1412.In step 1414, power control factor α is determined according to the variation in the power control factor of variation in the measured ambient interferences and transmission in the base station ₃For example, determine α according to Δ W and Δ α ₃, Δ W=W wherein ₂-W ₁In one exemplary embodiment, α ₃Be α ₃=α ₂+ Δ α and α ₃=α ₁-Δ α. in one.Operation proceeds to step 1416 from step 1414, and wherein the base station is provided with α ₁=α ₃Then, operation proceeds to step 1404, in step 1404, and base station broadcast power control factor α ₁

Figure 20 is the diagrammatic sketch of the relation curve 1500 of noise W on the vertical axis 1502 and the α on the trunnion axis 1504.Noise W is illustrated in the reception noise at the place, base station of attempting to recover uplink signal, and noise W comprises reciprocity noise and other area interference.Variable α is a power control factor.Curve 1506 is the indicatrixes with other area interference grade 1508 corresponding W and α.With the corresponding uplink null time interval of having a mind to of first base station during, first base station is controlled the wireless terminal used as network connection point wittingly, transmits to forbid uplink signal.During the uplink null time interval that this is had a mind to, allow the reciprocity activity in the sub-district to proceed.Therefore, first base station receiver should the equity activity be considered as noise, and should the equity activity produce contribution to measured noise W.

The hypothesis adjacent base station is operated with respect to first base station synchronization ground now.Because adjacent base station is synchronous with respect to first base station, so the uplink null time interval of having a mind to of adjacent base station needn't be overlapping with the intentionally empty time interval of first base station.Therefore, during the up link empty slot intentionally of first base station, the uplink signal of adjacent base station transmits also the measured noise W by first base station measurement is produced contribution.

The indicatrix 1506 of W and α is corresponding to the given level of other area interference 1508, and it represents least interference grade.If be operated on the approaching saturated point of curve 1506, then the increase of α can not bring remarkable improvement to reducing noise W.The increase of α is corresponding to the qualification of the through-put power that reciprocity signal is transmitted.Therefore, in this case, additionally limit reciprocity transmission power level and can not improve significantly for reception from the uplink signal of cellular radio terminals.Yet if be operated on the point with higher slope value of curve 1506, the less increase of α can bring marked change to the grade that reduces noise W.In this case, sometimes, for example, reducing α is of value to improvement to from the recovery based on the uplink signal of the wireless terminal of sub-district.For example, in this case, the less readjustment of reciprocity transmission power level can bring remarkable improvement to uplink signal transmission recovery and/or throughput.

Usually, in a plurality of embodiment, the priority that is assigned to good communications reception based on wide area (for example, honeycomb) has precedence over reciprocity signal and transmits.Yet, under the situation of the specific grade of the given desired up link quality of reception based on the sub-district, wish to make peer-to-peer communications throughput-maximized.Can find that W and α indicatrix will change according to other area interference.Other area interference can and be independent of first cell operation sometimes and changes.For example since in the condition, neighbor cell based on the number of the wireless terminal user of honeycomb, the load of neighbor cell uplink service etc., other area interference that stand first base station can change to different brackets.The curve chart 1600 of Figure 21 shows with other area interference grade 1508 of Figure 20 and compares other different area interference grades 1608.In addition, Figure 21 shows the different characteristic curve of comparing with indicatrix 1,506 1606.

Figure 22 shows according to noise testing and come illustrative methods that the selection of the power that uses control factor α is adjusted in a plurality of embodiment.Figure 22 is noise W on the vertical axis 1502 corresponding with indicatrix 1506 and the relation curve 1700 of the α on the trunnion axis 1504.In when work, first base station may not know that this first base station is operated on other area interference grade 1508 corresponding indicatrixes 1506 with Figure 20, and wherein curve 1506 is one of the families of curves that comprise the curve 1606 of curve 1506 and Figure 21.

The first base station α is set to initial value α ₁1702, wherein this value is broadcasted in downlink band.Reciprocity wireless terminal use value α in the sub-district of first base station ₁1702 control its reciprocity through-put power in corresponding uplink band.During the up link empty slot intentionally of first base station, first base station measurement receives noise grade W, is expressed as W ₁1706.Then, first base station is wittingly with α ₁Value change an amount Δ α 1708 to obtain α ₂1710.This input of being controlled of expression, it is used for will receiving wittingly noise grade and drives difference (from 1704 to 1712) on indicatrix 1506.This parameter alpha is broadcasted in first base station in downlink band ₂1710.Reciprocity wireless terminal use value α in the sub-district of first base station ₂1710 control its reciprocity through-put power in uplink band.During the up link empty slot intentionally of first base station, first base station measurement receives noise grade W, is expressed as W ₂1714.The variation of the first base station measurement W, Δ W 1716.Then, new α value is determined according to input motivation value Δ α, measured response Δ W and interference budget information that some are stored in first base station.In certain embodiments, first base station is according at least one noise testing point, for example W ₁Or W ₂, determine new α value.In this example, as put 1718 indicatedly, first base station is with new α value α if Δ W is less ₃Be set to α ₃=α ₁-Δ α; And indicated as point 1720, first base station is with new α value α if Δ W is big ₃Be set to α ₃=α ₂+ Δ α, for example, wherein less and big phasing really is for the predetermined interference budget information of being stored.Then, first base station broadcasting power control factor α in downlink band ₃, so that be used for controlling its transmission power level at uplink band by the reciprocity wireless terminal in the sub-district.

Figure 23 shows the diagrammatic sketch 1800 that uses in the example bandwidth of some embodiment that time division duplex (TDD) are used for wide area network (for example, being used for cellular communication).At wide area network,, for example share identical frequency band with the alternate mode between up link and the down link for example at the base station.For example, indicated according to square frame (1804,1806,1808,1810) along timeline 1802, the TDD frequency band that will be used for wide area (for example, cellular communication) is respectively applied for (up link, down link, up link, down link).Except that typical activity based on honeycomb, during the time interval that is preserved for the transmission of wide area uplink signal usually, the base station sends equity reference and/or control broadcast singal, for example beacon signal and/or other broadcast singal.This represents by corresponding with the time interval of square frame (1806,1810) respectively signal (1812,1814).In addition, as indicated with the concurrent cellular uplink square frame (1804,1808) of reciprocity square frame (1816,1818) respectively, the time interval that is allocated for wide area network (for example cellular uplink) also is used for reciprocity signal transmits, and wherein uses identical TDD frequency band.

Figure 24 shows the diagrammatic sketch 1900 that uses in the example bandwidth of some embodiment that Frequency Division Duplexing (FDD) (FDD) are used for wide area network (for example, being used for cellular communication).At wide area network, for example at the base station, up link is used different frequency bands with down link.In this exemplary embodiment, along frequency axis 1902, FDD wide area uplink band is represented by square frame 1904, and the wide area downlink band is represented by square frame 1906.In certain embodiments, up link and downlink band are adjacent.In certain embodiments, up link and/or downlink band comprise discontinuous part.In certain embodiments, at least a portion of a frequency band in up link and the downlink band is included between two different pieces of another frequency band in up link and the downlink band.

Except the typically uplink signal transmission based on honeycomb in FDD wide area uplink band, this frequency band also is used for and reciprocity signal transmits other relevant activity.In Figure 24, FDD wide area uplink band 1904 also by the base station be used to send equity with reference to and/or control broadcast singal 1908, for example send so that beacon signal and/or other broadcast singal that uses by reciprocity wireless terminal by the base station.As corresponding indicated by the square frame 1910 that is positioned on the frequency axis 1902 with FDD wide area uplink band 1904, reciprocity wireless terminal also uses same frequency band to be used for reciprocity signal and transmits.

Figure 25 shows the diagrammatic sketch 2100 according to wan communication use and exemplary band between the peer-to-peer communications use and the use of shared frequency band of a plurality of embodiment.Frequency band as the wan communication frequency band also is assigned with as reciprocity TDD receiver frequency band and reciprocity TDD transmitter band.For example, the frequency band shown in Figure 26 can be utilized by the multi-mode radio communications device 2000 of Figure 25, for example, wherein provides and/or use different WAN up links and downlink communication frequency band right at diverse location and/or at different time.

Trunnion axis 2101 expression frequencies.With frequency f _UL12103 is corresponding, exists wide area network up link Frequency Division Duplexing (FDD) frequency band 2102, reciprocity time division duplex to send frequency band 2106 and reciprocity time division duplex frequency acceptance band 2108.Wide area network up link Frequency Division Duplexing (FDD) frequency band 2102 is paired with wide area network down link frequency division duplex band 2104.With frequency f _DL12105 is corresponding, has wide area network down link frequency division duplex band 2104.Also use WAN down link FDD frequency band 2104 as frequency band 2109, to be used to transmit the broadcast singal that is derived from the base station, for example be used for transmitting the reference and/or the control information signal that are used to influence reciprocity signal transmission (for example being used for reciprocity through-put power controls) such as beacon signal or non-beacon control channel signals.

Equally, with frequency f _UL22113 is corresponding, exists wide area network up link Frequency Division Duplexing (FDD) frequency band 2112, reciprocity time division duplex to send frequency band 2116 and reciprocity time division duplex frequency acceptance band 2118.Wide area network up link Frequency Division Duplexing (FDD) frequency band 2112 is paired with wide area network down link frequency division duplex band 2114.With frequency f _DL22115 is corresponding, has wide area network down link frequency division duplex band 2114.Also use WAN down link FDD frequency band 2114 as frequency band 2119, to be used to transmit the broadcast singal that is derived from the base station, for example be used for transmitting the reference and/or the control information signal that are used to influence reciprocity signal transmission (for example being used for reciprocity through-put power controls) such as beacon signal or non-beacon control channel signals.

Equally, with frequency f _UL32123 is corresponding, exists wide area network up link Frequency Division Duplexing (FDD) frequency band 2122, reciprocity time division duplex to send frequency band 2126 and reciprocity time division duplex frequency acceptance band 2128.Wide area network up link Frequency Division Duplexing (FDD) frequency band 2122 is paired with wide area network down link frequency division duplex band 2124.With frequency f _DL32125 is corresponding, has wide area network down link frequency division duplex band 2124.Also use WAN down link FDD frequency band 2124 as frequency band 2129, to be used to transmit the broadcast singal that is derived from the base station, for example be used for transmitting the reference and/or the control information signal that are used to influence reciprocity signal transmission (for example being used for reciprocity through-put power controls) such as beacon signal or non-beacon control channel signals.

In certain embodiments, the compatible reciprocity signal of communication system based on honeycomb of at least one among use TDD and the FDD transmits, wherein at least some reciprocity signals transmit share air link resources, this air link resources also is used for the up link wide area network, and for example the uplink signal based on the sub-district transmits.In certain embodiments, typically making amendment based on the communication system of honeycomb of at least one among use TDD and the FDD transmitted with the reciprocity signal of compatibility, wherein at least some reciprocity signals transmit share air link resources, this air link resources is preserved for the up link wide area network usually, and for example the uplink signal based on the sub-district transmits.In certain embodiments, many supports can continue to use in this communication system based on the signal transmission of sub-district and the conventional communication device of not supporting reciprocity signal to transmit.In a plurality of embodiment, communication system is supported the mixing of communication equipment, and wherein at least some communication equipments are supported peer-to-peer communicationss and do not supported communication based on the sub-district.In certain embodiments, communication equipment is supported the mixing of communication equipment, and wherein at least some communication equipments are supported peer-to-peer communicationss and communicated by letter both based on the sub-district.

Although mainly be described under the background of ofdm system, the method and apparatus of a plurality of embodiment can be applicable to communication system widely, comprises many non-ofdm systems and/or non-cellular system.Some example system are included in the mixing of the technology of utilizing in the reciprocity signal transmission, for example some OFDM type signals and number of C DMA type signal.

In a plurality of embodiment, one or more modules that use is used to carry out with the corresponding step of one or more methods realize node as described herein, and wherein said step for example scans uplink bandwidth, estimates base station signal, determines the transmission power level Control Parameter, controls reciprocity through-put power, measures and disturb, determine through-put power controlling value, transmission through-put power Control Parameter etc.In certain embodiments, a plurality of features use module to realize.These modules can use the combination of software, hardware or software and hardware to realize.Can use (for example such as the machine readable media of memory devices, RAM, floppy disk etc.) in the machine-executable instruction that comprises such as software realize many said methods or method step, so that control machine, for example have or do not have the all-purpose computer of additional firmware, thereby for example in one or more nodes, realize all or part of of said method.Therefore, in addition, a plurality of embodiment relate to machine readable media, and it comprises and is used to make machine (for example processor and related hardware) to carry out the machine-executable instruction of one or more steps of said method.

By above description, those skilled in the art will know the many additional variations to said method and device.These modification should be considered as in scope.The method and apparatus of a plurality of embodiment can use and use CDMA, OFDM (OFDM) and/or can be used for providing the communication technology of various other types of wireless communication link between access node and mobile node in a plurality of embodiment.In certain embodiments, access node is embodied as the base station, it uses OFDM and/or CDMA to come to set up communication link with mobile node.In a plurality of embodiment, mobile node is embodied as notebook computer, the PDA(Personal Digital Assistant) of the method that is used to realize a plurality of embodiment or comprises receiver/transmitter circuitry and other portable equipment of logic and/or routine.

Claims

1, a kind of method of operate wireless communication equipment, described Wireless Telecom Equipment is supported in the peer-to-peer communications in the base station uplink frequency band, and described method comprises:

In downlink band, receive first signal from the base station;

Received signal is estimated; And

Control the reciprocity through-put power of at least some reciprocity signals transmission in the described uplink band according to result to the described estimation of described first received signal.

2, method according to claim 1, wherein said estimation is a signal power measurement.

3, method according to claim 1, wherein said estimation are the extractions to the coded message of transmitting in received signal.

4, method according to claim 1, wherein said estimation comprise acquired information from the received power level of received signal and the coded message of transmitting extracted received signal.

5, method according to claim 1 also comprises:

Locating, in described downlink band, receive secondary signal from described base station with the time of the asynchronism(-nization) that receives described first signal;

Described second received signal is estimated; And

According to described estimation, determine that described Wireless Telecom Equipment should forbid in described uplink band sending the peer-to-peer communications signal to described second received signal.

6, method according to claim 5 also comprises:

After definite described communication equipment should be forbidden sending the peer-to-peer communications signal, forbid in described uplink band sending the peer-to-peer communications signal, up to by to till determining that from another signal estimation of described base station the described Wireless Telecom Equipment of permission sends reciprocity signal.

7, method according to claim 1, wherein said first signal is a beacon signal.

8, method according to claim 7, wherein said beacon signal comprises maximum three OFDM tones, and every tone transmission power level that tone had of wherein said beacon signal is than average every tone transmission power level height of the non-NULL tone of reciprocity signal 10dB at least.

9, method according to claim 1, wherein said first signal is a broadcast channel signal.

10, method according to claim 9, wherein said broadcast channel signal comprises one group of OFDM tone, and every tone transmission power level that tone had of wherein said broadcast channel signal is than average every tone transmission power level height of the non-NULL tone of reciprocity signal 3dB at least.

11, method according to claim 1, wherein said first signal is the CDMA pilot signal.

12, method according to claim 1, wherein said up link and downlink band are corresponding to different non-overlapped Frequency Division Duplexing (FDD) (FDD) WAN base station communication frequency bands.

13, method according to claim 1, base station time division duplex (TDD) frequency band of wherein said uplink band during, and the same base TDD frequency band of wherein said downlink band during corresponding to downlink time slots corresponding to uplink time slot.

14, method according to claim 2 is wherein controlled reciprocity through-put power and is comprised use first function, and

Wherein compare with the second received signal power level that is higher than the first received signal power level, described first function arrives lower level at the described first received signal power level with reciprocity transmit power restrictions.

15, method according to claim 14, wherein said first function are determined the maximum reciprocity transmission power level that allows.

16, a kind of device comprises:

The processor that in Wireless Telecom Equipment, uses, described Wireless Telecom Equipment is supported in the peer-to-peer communications in the base station uplink frequency band, and described processor configuration is used for:

In downlink band, receive first signal from the base station;

Received signal is estimated; And

17, device according to claim 16, wherein said estimation is a signal power measurement.

18, device according to claim 16, wherein said estimation are the extractions to the coded message of transmitting in received signal.

19, device according to claim 16, wherein said processor also dispose and are used for:

Described second received signal is estimated; And

20, device according to claim 19, wherein said processor also dispose and are used for:

After definite described communication equipment should be forbidden sending the peer-to-peer communications signal, control described communication equipment forbidding in described uplink band sending the peer-to-peer communications signal, up to by to till determining that from another signal estimation of described base station the described Wireless Telecom Equipment of permission sends reciprocity signal.

21, a kind of computer-readable medium with machine-executable instruction, described instruction is used to control the method for Wireless Telecom Equipment to realize communicating with another communication equipment, described Wireless Telecom Equipment is supported in the peer-to-peer communications in the base station uplink frequency band, and described method comprises:

In downlink band, receive first signal from the base station;

Received signal is estimated; And

22, computer-readable medium according to claim 21, wherein said estimation is a signal power measurement.

23, computer-readable medium according to claim 21, wherein said estimation are the extractions to the coded message of transmitting in received signal.

24, computer-readable medium according to claim 21 also has the machine-executable instruction that is used for following operation:

Described second received signal is estimated; And

25, computer-readable medium according to claim 24 also has the machine-executable instruction that is used for following operation:

26, a kind of base station of operating is with the method for control from the interference of the peer-to-peer communications in first communication band, and described method comprises:

Generate reciprocity transmission power control signal; And

Send described reciprocity transmission power control signal in the second communication frequency band, described second communication frequency band is different with described first communication band.

27, method according to claim 26, wherein said first communication band is used for: (i) transmit from the wide area network uplink signal of wide area network wireless terminal to described base station; And (ii) the peer-to-peer communications signal between two reciprocity wireless terminals transmits.

28, method according to claim 27, wherein said second communication frequency band is used for: (i) down link signal is delivered to described wide area network wireless terminal from described base station; And (ii) described reciprocity power control signal is delivered to peer communications devices.

29, method according to claim 28 also comprises:

Generate wide area network uplink transmission power control signal; And

In described second communication frequency band, the wide area network transmission power control signal that is generated is sent to described wide area network wireless terminal.

30, method according to claim 28, wherein said first communication band are Frequency Division Duplexing (FDD) (FDD) wide area network (WAN) uplink bands, and wherein said second communication frequency band is Frequency Division Duplexing (FDD) (FDD) wide area network downlink band.

31, method according to claim 30, wherein said uplink band and described downlink band are not overlapping and constitute a pair of accordingly.

32, method according to claim 28, wherein said first communication band are base station time division duplex (TDD) frequency bands during the uplink time slot, and wherein said second communication frequency band is the same base TDD frequency band during the downlink time slots.

33, method according to claim 28, wherein said reciprocity transmission power control signal is a beacon signal.

34, method according to claim 33, wherein said beacon signal comprises maximum three OFDM tones, and every tone transmission power level that tone had of wherein said beacon signal is than average every tone transmission power level height of the non-NULL tone of reciprocity signal 10dB at least.

35, method according to claim 28, wherein said reciprocity transmission power control signal is a broadcast channel signal.

36, method according to claim 35, wherein said broadcast channel signal comprises one group of OFDM tone, and every tone transmission power level that tone had of wherein said broadcast channel signal is than average every tone transmission power level height of the non-NULL tone of reciprocity signal 3dB at least.

37, method according to claim 28, wherein said reciprocity transmission power control signal is the CDMA pilot signal.

38, method according to claim 28 also comprises:

Send the second reciprocity transmission power control signal with the transmission power level different, and wherein reciprocity wireless terminal uses institute's received power level of reciprocity transmission power control signal to adjust its reciprocity transmission power level with the described first reciprocity transmission power level.

39, method according to claim 28 also comprises:

Send the second reciprocity transmission power control signal, the coding control information that the described second reciprocity transmission power control signal transmission is different with the described first reciprocity transmission power control signal, and wherein reciprocity wireless terminal uses described coded message to adjust its reciprocity transmission power level.

40, a kind of device comprises:

Processor is used in the interference of base station control from the peer-to-peer communications in first communication band, and described processor configuration is used for:

Generate reciprocity transmission power control signal; And

41, according to the described device of claim 40, wherein said first communication band is used for: (i) transmit from the wide area network uplink signal of wide area network wireless terminal to described base station; And (ii) the peer-to-peer communications signal between two reciprocity wireless terminals transmits.

42, according to the described device of claim 41, wherein said second communication frequency band is used for: (i) down link signal is delivered to described wide area network wireless terminal from described base station; And (ii) described reciprocity power control signal is delivered to peer communications devices.

43, according to the described device of claim 42, wherein said first communication band is Frequency Division Duplexing (FDD) (FDD) wide area network (WAN) uplink band, and wherein said second communication frequency band is Frequency Division Duplexing (FDD) (FDD) wide area network downlink band.

44, according to the described device of claim 42, wherein said first communication band is base station time division duplex (TDD) frequency band during the uplink time slot, and wherein said second communication frequency band is the same base TDD frequency band during the downlink time slots.

45, a kind of computer-readable medium with machine-executable instruction, described instruction are used to control the method for base station to realize controlling from the interference of the peer-to-peer communications of first communication band, and described method comprises:

Generate reciprocity transmission power control signal; And

46, according to the described computer-readable medium of claim 45, wherein said first communication band is used for: (i) transmit from the wide area network uplink signal of wide area network wireless terminal to described base station; And (ii) the peer-to-peer communications signal between two reciprocity wireless terminals transmits.

47, according to the described computer-readable medium of claim 46, wherein said second communication frequency band is used for: (i) down link signal is delivered to described wide area network wireless terminal from described base station; And (ii) described reciprocity power control signal is delivered to peer communications devices.

48, according to the described computer-readable medium of claim 47, wherein said first communication band is Frequency Division Duplexing (FDD) (FDD) wide area network (WAN) uplink band, and wherein said second communication frequency band is Frequency Division Duplexing (FDD) (FDD) wide area network downlink band.

49, according to the described computer-readable medium of claim 47, wherein said first communication band is base station time division duplex (TDD) frequency band during the uplink time slot, and wherein said second communication frequency band is the same base TDD frequency band during the downlink time slots.

50, a kind of Wireless Telecom Equipment that is supported in the peer-to-peer communications in the base station uplink frequency band, described Wireless Telecom Equipment comprises:

Receiver module is used for receiving first signal from the base station in downlink band;

Signal processing module is used for received signal is estimated; And

Equity through-put power control module is used for basis is controlled at least some the reciprocity signals transmission of described uplink band to the result of the described estimation of described first received signal reciprocity through-put power.

51, according to the described Wireless Telecom Equipment of claim 50, wherein said signal processing module comprises power measurement module, is used to measure the received power level of received signal.

52, according to the described Wireless Telecom Equipment of claim 50, wherein said signal processing module comprises decoder module, is used for the coded message of transmitting at received signal is extracted.

53, according to the described Wireless Telecom Equipment of claim 50, wherein said signal processing module comprises the power measurement module that the received power level of received signal is measured, and the decoder module that the coded message of transmitting in the received signal is extracted.

54, according to the described Wireless Telecom Equipment of claim 50, also comprise:

The equity authorization module is used for determining whether to allow described Wireless Telecom Equipment to send the peer-to-peer communications signal or whether limit described wireless terminal at described uplink band according to the described estimation to received signal and sends the peer-to-peer communications signal in described uplink band.

55, according to the described Wireless Telecom Equipment of claim 50, wherein said first signal is a beacon signal.

56, according to the described Wireless Telecom Equipment of claim 55, wherein said beacon signal comprises maximum three OFDM tones, and every tone transmission power level that tone had of wherein said beacon signal is than average every tone transmission power level height of the non-NULL tone of reciprocity signal 10dB at least, and described device also comprises:

Memory comprises the stored information that characterizes the beacon signal that is derived from the base station that is used for reciprocity through-put power control; And

Equity through-put power mouse beacon identification module is used to identify described beacon signal.

57, according to the described Wireless Telecom Equipment of claim 50, wherein said first signal is a broadcast channel signal.

58, according to the described Wireless Telecom Equipment of claim 57, wherein said broadcast channel signal comprises one group of OFDM tone, and every tone transmission power level that tone had of wherein said broadcast channel signal is than average every tone transmission power level height of the non-NULL tone of reciprocity signal 3dB at least, and described Wireless Telecom Equipment also comprises:

Memory comprises the stored information that characterizes the broadcast channel signal that is derived from the base station that is used for reciprocity through-put power control; And

Equity through-put power control broadcast identification module is used to identify described broadcast channel signal.

59, according to the described Wireless Telecom Equipment of claim 50, wherein said first signal is the CDMA pilot signal.

60, according to the described Wireless Telecom Equipment of claim 50, wherein said up link and downlink band are corresponding to different non-overlapped Frequency Division Duplexing (FDD) (FDD) WAN base station communication frequency bands, and described Wireless Telecom Equipment also comprises:

Memory comprises the FDD air link resources structural information of being stored.

61, according to the described Wireless Telecom Equipment of claim 50, base station time division duplex (TDD) frequency band of wherein said uplink band during corresponding to uplink time slot, and the same base TDD frequency band of wherein said downlink band during corresponding to downlink time slots, described Wireless Telecom Equipment also comprises:

Memory comprises the TDD air link resources structural information of being stored.

62, according to the described Wireless Telecom Equipment of claim 51, wherein said reciprocity through-put power control module is used first functions control equity through-put power, wherein compare with the second received signal power level that is higher than the first received signal power level, described first function arrives lower level at the described first received signal power level with reciprocity transmit power restrictions.

63, according to the described Wireless Telecom Equipment of claim 62, wherein said first function is determined the maximum reciprocity transmission power level that allows.

64, a kind of Wireless Telecom Equipment that is supported in the peer-to-peer communications in the base station uplink frequency band, described Wireless Telecom Equipment comprises:

Be used for receiving from the base station receiver module of first signal in downlink band;

Be used for module that received signal is estimated; And

Be used for basis and the result of the described estimation of described first received signal controlled the module of the reciprocity through-put power of at least some reciprocity signals transmission of described uplink band.

65, according to the described Wireless Telecom Equipment of claim 64, the wherein said module that is used for the module that received signal is estimated is comprised the received power level that is used to measure received signal.

66, according to the described Wireless Telecom Equipment of claim 64, wherein said be used for the module that received signal is estimated comprised be used for module that the coded message of transmitting at received signal is extracted.

67, according to the described Wireless Telecom Equipment of claim 64, also comprise:

Be used for determining whether to allow described Wireless Telecom Equipment to send the peer-to-peer communications signal or whether limit described wireless terminal sends the peer-to-peer communications signal in described uplink band module at described uplink band according to described estimation to received signal.

68, according to the described Wireless Telecom Equipment of claim 65, the wherein said module that is used to control is used first functions control equity through-put power, wherein compare with the second received signal power level that is higher than the first received signal power level, described first function arrives lower level at the described first received signal power level with reciprocity transmit power restrictions.

69, a kind of base station, its control is from the interference of the peer-to-peer communications in first communication band, and described base station comprises:

Equity transmission power control signal generation module is used to generate reciprocity transmission power control signal; And

Transmitter module is used for sending described reciprocity transmission power control signal at the second communication frequency band, and described second communication frequency band is different with described first communication band.

70, according to the described base station of claim 69, wherein said first communication band is used for: (i) transmit from the wide area network uplink signal of wide area network wireless terminal to described base station; And (ii) the peer-to-peer communications signal between two reciprocity wireless terminals transmits.

71, according to the described base station of claim 70, wherein said second communication frequency band is used for: (i) down link signal is delivered to described wide area network wireless terminal from described base station; And (ii) described reciprocity power control signal is delivered to peer communications devices.

72, according to the described base station of claim 71, also comprise:

Wide area network transmission power control signal generation module is used to generate wide area network uplink transmission power control signal; And

Wherein said transmitter module also is used at described second communication frequency band the wide area network transmission power control signal that is generated being sent to described wide area network wireless terminal.

73, according to the described base station of claim 71, wherein said first communication band is Frequency Division Duplexing (FDD) (FDD) wide area network (WAN) uplink band, and wherein said second communication frequency band is Frequency Division Duplexing (FDD) (FDD) wide area network downlink band, and described base station also comprises:

Memory, it comprises the FDD air link resources structural information of being stored, described FDD air link resources structural information comprises sign is used to which air link resources of described downlink band to transmit the information of reciprocity transmission power control signal.

74, according to the described base station of claim 73, wherein said uplink band and described downlink band are not overlapping and constitute a pair of accordingly.

75, according to the described base station of claim 71, wherein said first communication band is base station time division duplex (TDD) frequency band during the uplink time slot, and wherein said second communication frequency band is the same base TDD frequency band during the downlink time slots, and described base station also comprises:

Memory, it comprises the TDD air link resources structural information of being stored, described TDD air link resources structural information comprises that sign is used for transmitting at the downlink time slots of described TDD frequency band the information of the air link resources of reciprocity transmission power control signal.

76, according to the described base station of claim 71, wherein said reciprocity transmission power control signal is a beacon signal.

77, according to the described base station of claim 76, wherein said beacon signal comprises maximum three OFDM tones, and every tone transmission power level that tone had of wherein said beacon signal is than average every tone transmission power level height of the non-NULL tone of reciprocity signal 10dB at least, and described base station also comprises:

Memory, it comprises reciprocity through-put power mouse beacon characteristic information.

78, according to the described base station of claim 71, wherein said reciprocity transmission power control signal is a broadcast channel signal.

79, according to the described base station of claim 78, wherein said broadcast channel signal comprises one group of OFDM tone, and every tone transmission power level that tone had of wherein said broadcast channel signal is than average every tone transmission power level height of the non-NULL tone of reciprocity signal 3dB at least, and described base station also comprises:

Memory, it comprises reciprocity through-put power control broadcast channel signal characteristic information.

80, according to the described base station of claim 71, wherein said reciprocity transmission power control signal is the CDMA pilot signal.

81, according to the described base station of claim 71, also comprise:

The through-put power control module, be used to control described transmitter module and send the second reciprocity transmission power control signal, and wherein reciprocity wireless terminal uses institute's received power level of reciprocity transmission power control signal to adjust its reciprocity transmission power level with the transmission power level different with the first reciprocity transmission power level.

82, according to the described base station of claim 71, wherein said reciprocity transmission power control signal generation module comprises:

Coder module, be used for comparing with the first reciprocity transmission power control signal, control information is encoded to different coding in the second reciprocity transmission power control signal, and wherein reciprocity wireless terminal uses described coded message to adjust its reciprocity transmission power level.

83, according to the described base station of claim 71, also comprise:

The equity signal transmits the restriction determination module, is used for determining whether allowing reciprocity signal transmission or whether limit reciprocity signal transmission in described first communication band in described first communication band.

84, a kind of base station, its control is from the interference of the peer-to-peer communications in first communication band, and described base station comprises:

Be used for sending at the second communication frequency band module of described reciprocity transmission power control signal, described second communication frequency band is different with described first communication band.

85,4 described base stations according to Claim 8, wherein said first communication band is used for: (i) transmit from the wide area network uplink signal of wide area network wireless terminal to described base station; And (ii) the peer-to-peer communications signal between two reciprocity wireless terminals transmits.

86,5 described base stations according to Claim 8, wherein said second communication frequency band is used for: (i) down link signal is delivered to described wide area network wireless terminal from described base station; And (ii) described reciprocity power control signal is delivered to peer communications devices.

87,6 described base stations according to Claim 8 also comprise:

Be used for described being used for sent the module that the module of the second reciprocity transmission power control signal is controlled with the transmission power level different with the first reciprocity transmission power level, and wherein reciprocity wireless terminal uses institute's received power level of reciprocity transmission power control signal to adjust its reciprocity transmission power level.

88,6 described base stations according to Claim 8 also comprise:

Be used for determining whether allow reciprocity signal transmission or in described first communication band, whether limit the module that reciprocity signal transmits in described first communication band.