CN1894873A - Noise measurement at base stations during silence periods in wireless communication systems - Google Patents
Noise measurement at base stations during silence periods in wireless communication systems Download PDFInfo
- Publication number
- CN1894873A CN1894873A CNA2004800263942A CN200480026394A CN1894873A CN 1894873 A CN1894873 A CN 1894873A CN A2004800263942 A CNA2004800263942 A CN A2004800263942A CN 200480026394 A CN200480026394 A CN 200480026394A CN 1894873 A CN1894873 A CN 1894873A
- Authority
- CN
- China
- Prior art keywords
- silence periods
- frame
- travelling carriage
- periodic
- base station
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
Noise is measured at one or more base stations in a mobile communication system during periodic silence periods. A periodic silence period is defined for at least one carrier that is independent of reverse link channel frame boundaries. The radio base stations transmits silence parameters defining the periodic silence period to mobile stations, which stop transmitting during the periodic silence periods. A time reference is provided to the mobile stations to synchronize the silence periods for all mobile stations.
Description
Related application
The application requires to enjoy the priority according to the following provisional application of 35U.S.C. § 119 (e): the application 60/486934 that on July 14th, 2003 proposed.This application is all incorporated herein by reference.
Background of invention
The present invention relates generally to self-adaptive controlled making mechanism,, and more particularly, relate to a kind of method of in cdma network, estimating the load of radio base station as rate controlled and the power control that is used for reverse chain channel in the cdma network.
Cdma network is an interference limiting system.Because all travelling carriages are in same frequencies operations, therefore, the internal interference that generates in network plays an important role when definite power system capacity and signal quality.The transmitting power of each travelling carriage has contribution to the reverse link loading of base station, and need control with limit interferences, keeps required performance objective simultaneously, for example, and the error rate (BER), frame error rate (FER), capacity, cutting off rate, coverage or the like.If it is too high that reverse link loading becomes, then general interruption may appear.When keeping the required power of lowest signal qualities standard, think that interruption can take place greater than the maximum transmission power of travelling carriage.
One of radio base station reverse link loading measure be called thermal noise raise (Rise OverThermal, RoT).RoT is normally defined on the base station gross power received from all travelling carriages and the ratio between the thermal noise.RoT is important measuring that is used for reverse link rate control, call admission control and reverse link scheduling for high speed packet data channel.Accurate measuring of RoT is long-standing problem always.Though interference on the measurement base station and background noise and relatively easy, determine that the two ratio is promptly more difficult as the interested RoT that measures.Problem is that the base station almost has business all the time, thereby the measurement background noise of having no chance.The present invention relates generally to self-adaptive controlled making mechanism,, and more particularly, relate to a kind of method of in cdma network, estimating the load of radio base station as rate controlled and the power control that is used for reverse chain channel in the cdma network.
The problem of determining RoT is to determine the noise power of background noise (comprising minizone and adjacent) in the communication system.Past has two kinds of technology to be used for determining Background Noise Power.A kind of technology is based on the signal of signal of base station demodulation and the estimated value of interference and noise ratio (SINR) is estimated RoT.Yet this technology is had to the rough estimate value of RoT.
Be used for determining that second kind of technology of RoT is to make all travelling carriages of whole network noiseless with periodic intervals, and during silence periods (silence period), measure noise power.Owing to do not receive signal at base stations during silence periods from travelling carriage, therefore, Background Noise Power can accurately be measured in the base station.The gross power of receiving on the base station obtains RoT with the ratio of Background Noise Power.
The reverse link frame that the idea of measuring background noise during periodic silence periods has been proposed to be used in all travelling carriages be time unifying and data service be the system that tolerance postpones.The system that has proposed periodic silence periods comprises IS-856 and 1xEV-DO system.Because the reverse link frame in these systems is synchronous, therefore, is relatively easy task for single frame makes all travelling carriages noiseless.In addition, because system is brand-new, therefore, system needn't keep and leave over the compatibility of travelling carriage.Another problem of prior art solution is not work out the regulation of considering the adjacent in the multicarrier system.
Summary of the invention
The present invention relates to a kind of method and apparatus of in mobile communication system, measuring noise, and in this system, travelling carriage is asynchronous emission on all reverse chain channels.According to various embodiments of the present invention, periodically make the reflector of all travelling carriages on all reverse chain channels noiseless, simultaneously, the base station measurement noise.The noise of measuring can comprise minizone and adjacent.When determining the reverse link loading of base station, can use the noise of measurement
In one embodiment of the invention, the irrelevant periodic silence periods of frame boundaries on definition and the reverse chain channel.The synchronous silence periods of all travelling carriages that provides the absolute time benchmark to be used on reverse chain channel, to launch.
In the second embodiment of the present invention, for having the different frame asynchronous and overlapping silence periods of reverse chain channel definition regularly.In this embodiment, silence periods preferably conforms to frame boundaries, and comprises two or more frames.RBS measures background noise at the overlapping time durations of silence periods.
The accompanying drawing summary
Fig. 1 is the block diagram of cordless communication network.
Fig. 2 is the block diagram of radio base station in the cordless communication network of Fig. 1.
Fig. 3 is the block diagram of travelling carriage in the cordless communication network of Fig. 1.
Fig. 4 illustrates the periodic silence periods on the reverse chain channel.
Fig. 5 A and 5B are illustrated in silence periods (ramp) transmission power of mobile station that tilts when beginning and finishing.
Fig. 6 is illustrated in the clock circuit that is used for implementation cycle property silence periods in the travelling carriage.
Fig. 7 illustrates the asynchronous and overlapping silence periods of two asynchronous reverse chain channels.
Detailed description of the invention
Forward accompanying drawing to, Fig. 1 illustrates and can implement exemplary wireless communication network 10 of the present invention.Network 10 can be arbitrary packet exchange communication network, for example, and according to the cdma2000 wireless network of IS-2000/2001 standard series.Yet, it will be apparent to one skilled in the art that cordless communication network can be configured according to other standard such as wideband CDMA (WCDMA) and Universal Mobile Telecommunications System (UMTS) standard.
RAN 30 provides the radio interface between travelling carriage 100 and the PSCN 20.Demonstration RAN 30 comprises Packet Control Function (PCF) 32, one or more base station controller (BSC) 34 and a plurality of radio base station (BSC) 36.BSC 34 is connected to PCF 32 with RBS 36, and is RBS 36 supervisory communications resources.Travelling carriage 100 communicates through air interface and the RBS 36 that the suitable network standard as the IS-2000 standard series defines.
Fig. 2 illustrates the function diagram of the RBS 36 that demonstrates according to an embodiment of the invention.RBS 36 comprises control circuit 38, a plurality of reflector 40 and receiver 42, multiplexer 44, demultiplexer 46 and the one or more antenna 48 that transmits and receives.The operation of control circuit 38 control RBS 36.Control circuit 38 can comprise one or more microprocessors or microcontroller or other logical circuit.Reception antenna 48 carries out Signal Separation from the signal that travelling carriage 100 receives by demultiplexer 46, and feed-in receiver 42 is handled.The signal of RBS 36 emissions is by multiplexer 30 combinations and be applied to transmitting antenna 48.The functional unit of Fig. 2 can software, hardware or both a certain combinations are implemented.For example, the one or more functional units among the RBS 36 can be embodied as the program command by one or more microprocessors that comprise among the RBS 36 or the execution of other logical circuit of storage.
Fig. 3 is travelling carriage 100 functional-block diagrams of demonstrating according to an embodiment of the invention.Term " travelling carriage " can comprise when using in this article: cellular radio; The PCS Personal Communications System of cellular radio capable of being combined and data processing, fax and data communication function (PCS) terminal; The personal digital assistant (PDA) that can comprise pager, Web browser, radio telephone, internet/intranet access, organizer, calendar; And conventional on knee and/or palm receiver or comprise the miscellaneous equipment of radio telephone transceiver
Travelling carriage 100 comprises the transceiver 110 that is connected to antenna 116 as known in the art through multiplexer 118.Travelling carriage 100 also comprises system controller 120, memory 130, audio frequency processing circuit 140 and user interface 150.Transceiver 110 comprises reflector 112 and receiver 114.Transceiver for example can be according to cdma2000 or WCDMA standard operation.Yet, the invention is not restricted to use together, and person of skill in the art will appreciate that with these standards, the present invention can expand or revise and be used for other standard.
System controller 120 provides comprehensive operation control according to program stored instruction in the memory 130 for travelling carriage 100.System controller 120 can comprise microprocessor or microcontroller, and can be the part of application-specific integrated circuit (ASIC) (ASIC).Whole memory organization in the memory 130 expression travelling carriages 100.Memory 130 provides memory space for data, operating system program and application program.Memory 130 can integrate with system controller, perhaps may be implemented in the one or more discrete memory devices.Audio frequency processing circuit 140 is handled the audio signal that is transmitted and received by travelling carriage 100.
User interface 150 generally comprises keyboard 152, display 154, microphone 156 and/or loud speaker 158.But keyboard 152 makes operator's input command, and when display 154 allows operators to check the order of menu option, input and other information on services the choice menus option.Microphone 156 becomes electric audio signal to be input to audio frequency processing circuit 140 operator's speech conversion.Loud speaker 158 will convert the earcon that the operator can hear to from the audio signal of audio frequency processing circuit 140 outputs.
RBS 36 communicates with a plurality of travelling carriages 100.RBS 36 by a plurality of reverse chain channels from travelling carriage 100 received signals.Reverse chain channel in the cdma2000 network for example can comprise Reverse Pilot Channel (R-PICH), reverse Auxiliary Pilot Channel (R-SPICH), Reverse Dedicated Control Channel (R-DCCH), Reverse Fundamental Channel (R-FCH), reverse complemental channel (R-SCH), reverse power control channel (R-PCCH), reverse ack channel (R-ACKCH), reverse channel quality indication channel (R-CQICH), reverse packet data channel (R-PDCH), reverse request channel (R-REQCH) and reverse packet data control channel (R-PDCCH), Reverse Access Channel (R-ACH), Reverse Enhanced Access Channel (R-EACH) and Reverse Common Signaling Channel (R-CSCH).Travelling carriage 100 is launched pilot signal on R-PICH and R-SPICH, these signals are used for channel estimating and signal strength measurement by RBS 36.R-FCH and R-SCH are the Traffic Channels that is used for voice-over and/or data.The R-DCCH carrying is used for the signaling consumption of R-FCH and R-SCH.R-PDCH is the high speed packet data channel that is used for reverse link traffic.The R-PDCCH carrying is used for the signaling consumption of R-PDCH.R-REQCH bearing resource solicited message is to support R-PDCH.R-ACKCH is used to confirm to be transmitted on the forward link the Frame of travelling carriage 100 by travelling carriage 100.R-PCCH is used for transmission power control information to the base station by travelling carriage 100.R-ACH and R-EACH are used to launch Access Probe to insert at random.R-CSCH is a common signaling channel.The reverse chain channel inventory is also not exhaustive, and other reverse chain channel can also exist.In addition, listed channel is not essential for putting into practice the present invention.In a preferred embodiment of the invention, should make the transmission on all reverse chain channels noiseless to allow to measure background noise.
In number of C DMA system, for all reverse chain channels, frame is not identical regularly.In addition, be used for some reverse chain channels of different mobile stations, frame regularly can be different.Because be not all reverse chain channels be synchronous, therefore, single frame can not be appointed as " silence periods " so that RBS 36 can measure the noise power of background noise in the communication system.
According to the present invention, even frame is regularly asynchronous on all reverse chain channels, even and frame regularly inequality between all travelling carriages 100, also defined for all travelling carriages identical periodic silence periods.According to the present invention, noiseless parameter is transmitted into travelling carriage 100 by RBS 36.The time reference of noiseless parameter assigned frequency or cycle, duration and periodic silence periods.The value of noiseless parameter can be selected by the Systems Operator, and is programmed among the RBS 36 when RBS 36 configurations.
The frequency of cycle parameter regulation silence periods.The representative value of cycle density can be 10 seconds.The length of duration parameter regulation silence periods.The representative value of duration parameter can be 20 milliseconds.In a preferred embodiment, the time reference parameter is provided for the absolute time benchmark of the silence periods of synchronous all travelling carriages and all reverse chain channels.Time reference can from or obtain based on system clock or global positioning system (GPS) clock.Time reference for example can be specified the time started of next silence periods.Noiseless parametric optimization is broadcasted by forward broadcast control channel (F-BCCH) as the part of control messages.Perhaps noiseless parameter can send to travelling carriage 100 by Forward Paging Channel (F-PCH).For realizing and the backwards compatibility of existing travelling carriage 100, noiseless parameter may must be launched all on F-PCH and F-BCCH.
Fig. 4 illustrates the frame timing and the silence periods of demonstration reverse chain channel.As shown in Figure 4, each reverse chain channel is divided into a plurality of frames 200.In this example, 200 duration of frame of supposing all reverse chain channels are 20 milliseconds.Yet the frame length of all channels is identical to be not essential.Each frame is divided into power control group (PCG) 206 again.In example embodiment, each frame 200 has 16 PCG.Cycle and duration parameter can PCG be that unit stipulates.
Travelling carriage 100 is designed to read F-BCCH and/or F-PCH to obtain noiseless parameter.During operation, the transmission of travelling carriage 100 on all reverse chain channels of silence periods 202 pause of appointment, simultaneously, RBS 36 measures the power of background noise.When each silence periods 202 finishes, the transmission that travelling carriage 100 recovers on the reverse chain channel.On the reverse chain channel of carrying tolerance deferred traffic, travelling carriage 100 can stop and restarting transmission making frame can not lose in the middle of frame 200.For the real time business channel of not tolerating delay, as voice channel, travelling carriage 100 can be removed the frame of having launched 200 during silence periods 202.If silence periods 202 is beginning in the middle of frame 200, then travelling carriage 100 can be removed all frames 200 overlapping with silence periods.Recover emission during first whole frame 200 beginnings that subsequently, travelling carriage 100 will be after silence periods 202 finishes.Perhaps, travelling carriage 100 can be launched the first that begins to locate overlapping frame with silence periods, at the transmission of silence periods pause, the remainder of frame emission after silence periods then.In this case, with silence periods finish overlapping frame and all between two parties frame will be eliminated.The method has been preserved at least one frame of the data that not so are eliminated possibly.
For some channels, travelling carriage 100 can check before frame emission whether the frame that will launch is overlapping with silence periods.Can use the channel of this process to comprise Reverse Access Channel (R-ACH), Reverse Enhanced Access Channel (R-EACH) and Reverse Common Signaling Channel (R-CSCH).Before the emission Access Probe, travelling carriage 100 checks possibly whether the Access Probe transmission is overlapping with silence periods on R-ACH or R-EACH.If then travelling carriage 100 arrives not overlapping with silence periods next R-ACH or R-EACH time slot with the Access Probe transmission delay possibly.Similarly process can be used on R-CSCH.
Can on forward channel, adopt with the similar process of said process.Under the situation of silence periods beginning in the middle of the frame, travelling carriage 100 can be before interruption be stored in the first of frame in the memory.When silence periods finishes, but the remainder of RBS 36 frame emissions 200.Travelling carriage 100 these two parts capable of being combined are to form complete frame.The frame that is emptied (blank) by silence periods fully can be eliminated.Under the certain situation, RBS 36 can remove all frames overlapping with silence periods.
In some mobile communication system, may not wish that all travelling carriages 100 stop and beginning emission suddenly.According to one embodiment of present invention, travelling carriage 100 is designed to when silence periods 202 beginnings its transmitting power is reduced to zero gradually from current launching electrical level, and when silence periods 202 finishes transmitting power is increased to required transmitted power level gradually from zero.Fig. 5 A and Fig. 5 B illustrate this oblique deascension gradually and the oblique ascension of transmission power of mobile station when silence periods 202 beginnings and end respectively.
In Fig. 5 A, silence periods comprises the guard time of oblique deascension and oblique ascension power when silence periods begins and finish respectively.In this case, the time of time reference parameter tags travelling carriage 100 its transmitting powers of beginning oblique deascension.In Fig. 5 B, travelling carriage 100 is its transmitting power of oblique deascension before silence periods 202 beginnings, and just in time begins oblique ascension after silence periods 202 finishes.In this case, the time reference parameter identification must make the noiseless time of all transmission.Under arbitrary situation, RBS 36 can launch the 4th noiseless parameter, the speed of the 100 necessary oblique deascensions of regulation travelling carriage and its transmitting power of oblique ascension.RBS 36 can be given for the fixed time period of oblique ascension and oblique deascension transmitting power, perhaps can stipulate the speed of oblique deascension and oblique ascension transmitting power.Slope (ramp rate) also can be by the standard code that is suitable for.
Fig. 6 illustrates the clock circuit 250 that is used for implementation cycle property silence periods in the travelling carriage 100.Clock circuit 250 comprises a pair of counter 252,254 that serves as count down timer.In example embodiment of the present invention, cycle and duration parameter are the unit regulation with PCG, and counter 252,254 statistics power control group (PCG) numbers.It is benchmark that counter 252,254 all receives the 800Hz clock signal.System controller 120 is provided with the initial value of counter 252,254 based on noiseless parameter.Cycle parameter is determined the initial value of cycle rate counter 252.The duration parameter is determined the initial value of duration counter 254.Cycle rate counter 252 generates the stop signal of each silence periods 202 beginning of mark.From the stop signal of cycle rate counter 252 duration counter 254 that resets.When duration counter 254 inverses were zero, duration counter 254 generated restoring signal.The response of 120 pairs of stop signals of system controller is the transmission that stop on the reverse chain channel, and the response of restoring signal is the transmission that recovers on the reverse chain channel.When travelling carriage 100 was opened for the first time, system controller 120 uses came to be first silence periods 202 start-up period counters 252 from the time reference parameter that broadcast channel reads.Afterwards, cycle rate counter 252 oneself when each its generates stop signal resets.But system controller 120 also reset cycle counter 252 is offset with compensating clock.
All travelling carriages 100 that are not use will be recognized silence periods 202.There are some modes to solve the problem of leaving over travelling carriage 100.In multicarrier system, those that can't recognize silence periods are left over travelling carriage 100 and can be assigned to a carrier wave, and recognize that those travelling carriages 100 of silence periods can be assigned to independent carrier wave.In this case, the fraction of the noise power of measurement is attributable to adjacent.In most of system, the adjacent amount should be measured to produce reliable Background Noise Power enough for a short time.In single-carrier system, can order and leave over travelling carriage 100 at the candidate frequency search (CFS) of carrying out during the silence periods on another frequency, this frequency can be current untapped pseudo-carrier wave.
In certain embodiments, the enforcement of silence periods can influence power of reverse link control unfriendly.Owing to there is not reverse link signal during silence periods, therefore, RBS 36 is the signal to noise ratio (snr) on the energy measurement reverse link or determine that the required reverse link channel condition of power control command that generates inner loop power control changes not.Therefore, may wish to close forward link power controls subchannel and/or indicates travelling carriage 100 to ignore the forward link power control channel.Owing to during silence periods, do not carry out power of reverse link control, therefore, may also wish when silence periods finishes, to adjust the target set point of using by RBS 36.For example, if target set point is Eb/Nt=5dB when silence periods begins, in the time of then outside moving on to silence periods, set point can be adjusted to Eb/Nt=5.5 and provides bigger buffering to become poorer at launching condition during the silence periods and to need under the more powerful situation.
Fig. 7 illustrates alternate embodiment of the present invention.Fig. 7 flag activation is CH1 and CH2, have different frame two reverse chain channels regularly.Frame length on each channel is identical, but in some embodiments of the invention can be different.Channel CH1 and CH2 can be used by single mobile station, perhaps can be used by two different travelling carriages.Be channel CH1 and the asynchronous and overlapping silence periods 202 of CH2 definition.In example embodiment, the length of silence periods 202 equals two or more frames, and the beginning of silence periods 202 conforms to frame boundaries 204 with end.Therefore, the duration of silence periods 202 equals the integral multiple of frame length.In this embodiment, RBS 36 measures background noise in silence periods 202 in the overlapping time.Frame length for the identical system of all reverse chain channels in, length equal a frame effective silence periods can all travelling carriages 100 are noiseless to be continued two successive frames and obtain by making.The advantage of this embodiment is that travelling carriage 100 begins and stop emission at different time, and therefore, RBS36 can not see that the rapid step of load changes.
Certainly, under the situation that does not break away from the scope of the invention and essential characteristic, can other outer ad hoc fashion of mode described herein realize the present invention.Therefore, it is illustrative and not restrictive that this paper embodiment all will be considered as in every respect, and is intended to the institute in the meaning of claims and equivalent scope changed and is included in wherein.
Claims (56)
1. the method for the noise of the one or more base stations of measurement in mobile communication system comprises:
Be at least one carrier wave definition and the irrelevant periodic silence periods of reverse chain channel frame boundaries;
The noiseless parameter of the described periodic silence periods of definition is transmitted into travelling carriage with described base station communication, it is characterized in that described travelling carriage stops emission during described periodic silence periods; And
During described periodic silence periods, measure the noise of each base station.
2. the method for claim 1 is characterized in that described noiseless parameter comprises frequency parameter, the duration parameter of described silence periods duration of expression of representing described silence periods frequency and provides the absolute time benchmark to be used to the time reference parameter of the synchronous silence periods of asynchronous reverse chain channel.
3. the method for claim 1 is characterized in that described periodic silence periods comprises the part of at least two continuous reverse link frames.
4. the method for claim 1 is characterized in that measuring the power of described noise during the noise of measuring each base station during the described periodic silence periods is included in described periodic silence periods.
5. the method for claim 1 is characterized in that described noise comprises adjacent.
6. the method for claim 1 is characterized in that described mobile communication system is a multicarrier system, and defines described periodic silence periods at least one carrier wave.
7. method as claimed in claim 6 is characterized in that also comprising:
First group of travelling carriage is assigned to the first carrier with periodic silence periods; And
Second group of travelling carriage is assigned to second carrier wave that does not have periodic silence periods.
8. method as claimed in claim 6 is characterized in that defining described periodic silence periods for a plurality of carrier waves.
9. method as claimed in claim 8 is characterized in that being the described periodic silence periods of two or more carrier synchronization.
10. method as claimed in claim 6 is characterized in that defining described periodic silence periods for all carrier waves.
11. method as claimed in claim 10 is characterized in that being the described periodic silence periods of all carrier synchronization.
12. the method for claim 1 is characterized in that also comprising the travelling carriage of leaving over that can't recognize silence periods is launched stopping at during the silence periods on the described reverse link.
13. method as claimed in claim 12 is characterized in that making the travelling carriage of leaving over that can't recognize silence periods during emission is included in described silence periods the described travelling carriage of leaving over to be directed to pseudo-carrier wave stopping at during the silence periods on the described reverse link.
14. method as claimed in claim 12 is characterized in that making the travelling carriage of leaving over that can't recognize silence periods to guide the described travelling carriage of leaving over to carry out candidate frequency search (CFS) on different carrier waves during emission is included in described silence periods stopping at during the silence periods on the described reverse link.
15. the method for claim 1 is characterized in that the duration of described silence periods is at least one frame.
16. the method for claim 1 is characterized in that the duration of described silence periods is less than a frame.
17. the method for claim 1 is characterized in that also being included in the power control command transmission on the described silence periods pause forward link power control channel.
18. the base station in mobile communication system comprises:
Controller for the irrelevant periodic silence periods of at least one carrier wave definition and reverse chain channel frame boundaries;
The noiseless parameter of the described periodic silence periods of definition is transmitted into the reflector of travelling carriage; And
Comprise that measuring circuit is to measure the receiver of noise during described periodic silence periods.
19. base station as claimed in claim 18 is characterized in that described noiseless parameter comprises frequency parameter, the duration parameter of described silence periods duration of expression of representing described silence periods frequency and provides the absolute time benchmark to be used to the time reference parameter of the synchronous silence periods of asynchronous reverse chain channel.
20. base station as claimed in claim 18 is characterized in that described periodic silence periods comprises the part of at least two successive frames.
21. base station as claimed in claim 18 is characterized in that described receiver measures the power of described noise during described periodic silence periods.
22. base station as claimed in claim 18 is characterized in that described noise comprises adjacent.
23. base station as claimed in claim 18 is characterized in that described mobile communication system is a multicarrier system, and described controller is at least one carrier wave delimiting period silence periods.
24. base station as claimed in claim 23 is characterized in that described controller also is used for:
First group of travelling carriage is assigned to the first carrier with periodic silence periods; And
Second group of travelling carriage is assigned to second carrier wave that does not have periodic silence periods.
25. base station as claimed in claim 23 is characterized in that defining described periodic silence periods for a plurality of carrier waves.
26. base station as claimed in claim 25 is characterized in that being the described periodic silence periods of two or more carrier synchronization.
27. base station as claimed in claim 23 is characterized in that defining described periodic silence periods for all carrier waves.
28. base station as claimed in claim 18 is characterized in that being the described periodic silence periods of all carrier synchronization.
29. base station as claimed in claim 18, its feature are that also described controller is used to make the travelling carriage of leaving over that can't recognize silence periods to launch stopping at during the silence periods on the described reverse link.
30. base station as claimed in claim 29 is characterized in that described controller is directed to pseudo-carrier wave with the described travelling carriage of leaving over during described silence periods.
31. base station as claimed in claim 29, it is characterized in that described controller during the described silence periods indication the described travelling carriage of leaving on different carrier waves, carry out candidate frequency search (CFS).
32. base station as claimed in claim 18 is characterized in that the duration of described silence periods is at least one frame.
33. base station as claimed in claim 18 is characterized in that the duration of described silence periods is less than a frame.
34. base station as claimed in claim 18 is characterized in that the power control command transmission of described controller on described silence periods pause forward link power control channel.
35. the travelling carriage in mobile communications network comprises:
On one or more reverse chain channels, transmit signals to the reflector of one or more base stations;
Receive the receiver of the noiseless parameter of the irrelevant periodic silence periods of definition and reverse chain channel frame boundaries from the base station; And
Effectively be connected to the controller of described reflector and described receiver, described controller is used for cutting out described reflector during described periodic silence periods.
36. travelling carriage as claimed in claim 35 is characterized in that described controller also is used for when described periodic silence periods begins transmitting power gradually, and increase transmitting power gradually when described silence periods finishes.
37. travelling carriage as claimed in claim 35 is characterized in that described noiseless parameter comprises frequency parameter, the duration parameter of described silence periods duration of expression of representing described silence periods frequency and provides the absolute time benchmark to be used to the time reference parameter of the synchronous silence periods of asynchronous reverse chain channel.
38. travelling carriage as claimed in claim 35 is characterized in that described periodic silence periods comprises the part of at least two successive frames.
39. travelling carriage as claimed in claim 35 is characterized in that described design of Controller is for ignoring the forward power control channel during described silence periods.
40. travelling carriage as claimed in claim 35 is characterized in that the duration of described silence periods is at least one frame.
41. travelling carriage as claimed in claim 35 is characterized in that the duration of described silence periods is less than a frame.
42. the method for the noise of the one or more base stations of measurement in mobile communication system comprises:
For having different frame at least two asynchronous and overlapping silence periods of reverse chain channel definition regularly;
The noiseless parameter of the described periodic silence periods of definition is transmitted into described travelling carriage, it is characterized in that described travelling carriage launches stopping on the described reverse chain channel during the described periodic silence periods; And
Measure the noise of each base station at the overlapping period of described periodic silence periods.
43. method as claimed in claim 42 is characterized in that described periodic silence periods comprises the part of at least two continuous reverse link frames.
44. method as claimed in claim 42 is characterized in that measuring the power of described noise during the noise of measuring each base station during the described periodic silence periods is included in described periodic silence periods.
45. method as claimed in claim 42 is characterized in that described noise comprises adjacent.
46. method as claimed in claim 42 is characterized in that described mobile communication system is a multicarrier system, and defines described periodic silence periods for all reverse chain channels at least one carrier wave.
47. method as claimed in claim 42 is characterized in that the duration of described silence periods is at least one frame.
48. method as claimed in claim 42 is characterized in that the duration of described silence periods is less than a frame.
47. a transmission method of being convenient to measure background noise in mobile communication system comprises:
Be at least one carrier wave definition and the irrelevant periodic silence periods of reverse chain channel frame boundaries;
Determine whether frame is overlapping with silence periods;
Whether response frame controls reflector with overlapping the determining of silence periods.
48. method as claimed in claim 47 is characterized in that whether response frame is controlled reflector with overlapping the determining of silence periods and comprised the first that launches described frame; In the transmission of the described frame of described silence periods pause, and the second portion of after described silence periods, launching described frame.
49. method as claimed in claim 47 is characterized in that whether response frame control reflector with overlapping the determining of silence periods and be included in frame and silence periods and postpone the transmission of described frame when overlapping, and launch the frame that is postponed after described silence periods.
50. method as claimed in claim 47 is characterized in that whether response frame control reflector with overlapping the determining of silence periods and be included in frame and silence periods and remove described frame when overlapping.
51. a communication equipment that is used for cordless communication network comprises:
Be divided into the reflector that transmits on the channel of a plurality of frames; And
Effectively be connected to the controller of described reflector, described controller is used for:
Determine that whether frame is overlapping with silence periods, is characterized in that described silence periods and frame limit
The boundary is irrelevant; And
Whether response frame controls described reflector with overlapping the determining of described silence periods.
52. communication equipment as claimed in claim 51 is characterized in that described controller makes described reflector:
Launch the first of described frame;
Transmission at the described frame of described silence periods pause; And
After described silence periods, recover to transmit and launch the second portion of described frame.
53. communication equipment as claimed in claim 52 is characterized in that described controller makes the transmission of the overlapping frame of described reflector delay and described silence periods, and launch the frame that is postponed after described silence periods.
54. communication equipment as claimed in claim 52 is characterized in that described controller removing and the overlapping frame of described silence periods.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US48693403P | 2003-07-14 | 2003-07-14 | |
| US60/486,934 | 2003-07-14 | ||
| US10/789,587 | 2004-02-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1894873A true CN1894873A (en) | 2007-01-10 |
Family
ID=37598293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004800263942A Pending CN1894873A (en) | 2003-07-14 | 2004-06-22 | Noise measurement at base stations during silence periods in wireless communication systems |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1894873A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102859914A (en) * | 2010-04-15 | 2013-01-02 | 高通股份有限公司 | Coordinated silent period with sounding reference signal (SRS) configuration |
| CN105376751A (en) * | 2014-09-02 | 2016-03-02 | 中兴通讯股份有限公司 | Detection, analysis and alarm method and apparatus |
-
2004
- 2004-06-22 CN CNA2004800263942A patent/CN1894873A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102859914A (en) * | 2010-04-15 | 2013-01-02 | 高通股份有限公司 | Coordinated silent period with sounding reference signal (SRS) configuration |
| US8929230B2 (en) | 2010-04-15 | 2015-01-06 | Qualcomm Incorporated | Coordinated silent period with sounding reference signal (SRS) configuration |
| CN102859914B (en) * | 2010-04-15 | 2016-06-01 | 高通股份有限公司 | Use the coordinated silence period that detection reference signal (SRS) configures |
| CN105376751A (en) * | 2014-09-02 | 2016-03-02 | 中兴通讯股份有限公司 | Detection, analysis and alarm method and apparatus |
| CN105376751B (en) * | 2014-09-02 | 2019-06-11 | 中兴通讯股份有限公司 | A kind of detection, analysis, alarm method and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7522919B2 (en) | Enhancements to periodic silences in wireless communication systems | |
| KR100816691B1 (en) | Method and system for performing a handoff in a wireless communication system, such as a hard handoff | |
| CN101361280B (en) | Method and arrangement for reducing power consumption in a mobile communication network | |
| US7158502B2 (en) | Slot cycle assignment within a communication system | |
| EP2092700B1 (en) | A method of scheduling data transmission in a radio network | |
| CN106131969B (en) | The method and apparatus for executing the random access in wireless communication | |
| EP1968226B1 (en) | A method for improving paging speed of a called user in a cdma trunking system | |
| US7092721B2 (en) | Reducing delay in setting up calls | |
| CN100566441C (en) | The system and method for adaptively allocating resources between DRS (Dedicated Reference Signal) and telephone traffic signal | |
| EP1337048A3 (en) | Mobile transceiver and control method for a mobile transceiver | |
| KR20090116786A (en) | Reduced scanning within a uniform period in out-of-service conditions | |
| JP4709221B2 (en) | Method and system for power control in a communication system | |
| EP1826923B1 (en) | Verification methods and apparatus for improving acquisition searches of asynchronous cells | |
| CN113424604A (en) | Communication method and device | |
| US20070049318A1 (en) | Reducing call drops in spread spectrum wireless communication systems | |
| CN1894873A (en) | Noise measurement at base stations during silence periods in wireless communication systems | |
| WO2006065463A2 (en) | A transmitter, a cellular communication system and method of transmitting radio signals therefor | |
| JP4855469B2 (en) | Wireless communication system, base station and mobile station | |
| CN101091332A (en) | Methods and apparatus for fast downlink information of uplink out-of-synchronization |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20070110 |