CN101253790B

CN101253790B - Detection of control messages for hsdpa in a wireless communication system

Info

Publication number: CN101253790B
Application number: CN2006800318520A
Authority: CN
Inventors: B·林多夫; J·尼尔森
Original assignee: Telefonaktiebolaget LM Ericsson AB
Current assignee: Telefonaktiebolaget LM Ericsson AB
Priority date: 2005-08-30
Filing date: 2006-08-29
Publication date: 2012-11-07
Anticipated expiration: 2026-08-29
Also published as: ZA200801855B; CN101253790A

Abstract

A adaptive method implemented by a mobile station improves the likelihood of detecting control messages transmitted to the mobile station in band on a shared downlink traffic channel. When the mobile station expects a control message to be transmitted on the shared downlink traffic channel, the mobile station may adapt the receiver configuration and/or receiver parameters to reduce a likelihood of missed detection of control messages. In one embodiment, the mobile station is configured to adjust a correlation threshold used for said scheduled transmission detection to reduce the likelihood of a missed detection.

Description

The detecting of the control messages that the high-speed downlink packet in the wireless communication system inserts

Technical field

The present invention relates generally to code division multiple access (CDMA) system, and particularly, relate to radio resource control signaling in the cdma system.

Background technology

It is the packet data service that provides in WCDMA (WCDMA) network that high-speed downlink packet inserts (HSDPA).HSDPA is third generation partner program (Third Generation Partnership Project; 3GPP) the evolution of the WCDMA of appointment in WCDMA standard release version 99.The HSDPA that adopts in the WCDMA standard release version 5 uses and strengthens characteristic (such as higher-order modulation (16QAM), the hybrid automatic repetitive requests of physical layer (H-ARQ), many yards transmission, rapid link is adaptive and fast dispatch) and the peak data rate up to 10Mbits/s is provided.The transmission channel that is used for HSDPA is high-speed downlink shared channel (HS-DSCH).HS-DSCH carries at High-Speed Physical Downlink Shared Channel (HS-PDSCH).

HS-DSCH is the time-multiplex formula channel of being shared by a plurality of mobile radio station.Some mobile radio stations are scheduled to receive the data that serving BS transmits on HS-PDSCH.Scheduling interval is called Transmission Time Interval (TTI).During given TTI, can dispatch one or more mobile radio stations.These mobile radio stations are given this base station at uplink channel (being called High-Speed Dedicated Physical Control Channel (HS-DPCCH)) with channel condition report, so that scheduling decision can be carried out in this base station.This mobile radio station is dispatched based on the channel condition of being reported in this base station part at least.Identification status being scheduled during the given TTI with the mobile radio station that receives the grouped data on this HS-DSCH is on High-Speed Shared Control Channel (HS-SCCH), to transmit.Also use HS-SCCH to send the required transmission parameter of mobile radio station decoding HS-DSCH, such as sign indicating number channel, transmission block size and the modulation scheme used among the corresponding TTI.

Be different from the DPCH (DPCH) among the WCDMA, do not support the soft friendship of HSDPA to pass.Owing to coordinate the complexity of packet data transmission between sub-district (cell), thereby use direct-cut operation (HHO).The twinkling signal of pilot tone (pilot) signal that each sub-district receives in the Active Set (active set) of comfortable this mobile radio station of mobile radio station measurement is to interference ratio and to the sub-district request service that peak signal is provided.Along with this mobile radio station moves to the frontier district between the sub-district, will successively decrease from the signal strength signal intensity of Serving cell, the signal strength signal intensity from adjacent cell in the Active Set of this mobile radio station will increase progressively simultaneously.When the signal strength signal intensity that surpasses from the signal strength signal intensity of this adjacent cell from this present Serving cell, this mobile radio station request switches to the intended target sub-district from this present Serving cell.When this present serving BS was confirmed this handoff request, this mobile radio station switched to this Target cell, and sent and handover complete message to this target BS, should switch to accomplish.This target BS is served as the role as serving BS, and the beginning transmitting grouped data is to this mobile radio station.

According to WCDMA standard release version 5, HS-DSCH combines associating DPCH (A-DPCH) operation in up link and the both downlink all the time.A-DPCH carries radio resource control (RRC) message between mobile radio station and base station.Radio resource control is a kind of agreement of being controlled mobile radio station by the radio network controller in the radio access network that provides.The RRC function comprises the switching controls to the mobile radio station that is in connected mode.WCDMA standard release version 6 allows to send in the frequency band of serving BS with HS-PDSCH (but not A-DPCH) RRC signaling message (comprise and switch message) to mobile radio station.

Changeover program began to accomplishing the about 200-800 millisecond of typical case's cost from the time that mobile radio station sends this handoff request.During this period, but from the signal quality marked change of the HS-PDSCH of Serving cell.Handover messages to mobile radio station if use HS-PDSCH (but not using A-DPCH) to send, bigger risk of packet loss is then arranged.If channel condition significantly worsens, then mobile radio station possibly can't receive the switching message from this serving BS, and this can hinder mobile radio station to accomplish switching, and can cause radio link failure, that is, and and dropped call.

Therefore, have the signaling that need make between base station and the mobile radio station more strong, especially signaling transmits when handovering messages to mobile radio station in the frequency band on using HS-DSCH.

Summary of the invention

The specific embodiment of the invention provides a kind of method and apparatus that is used to improve the detecting of sharing radio resource control (RRC) message that is transferred to mobile radio station on the downlink traffic channel in the frequency band.This method comprises: when desiring to send to the RRC message of mobile radio station on this shared downlink traffic channel of expection, the receiver in adaptive this mobile radio station is to reduce to omit the detecting possibility.Can be through changing the next adaptive receiver of reception parameter that receiver disposed and/or be used to receive signal.Change the receiver configuration and (for example comprise the change receiver mode; Change into generalized RAKE (GRAKE) receiving mode from the RAKE receiving mode); Or (for example change the receiver resource allocation; RAKE/GRAKE harrows exponential quantity), to reduce the omission detecting possibility of RRC message on this shared downlink traffic channel.When the RRC message that desire is sent on the downlink traffic channel is shared in this mobile radio station expection, also can adjust the reception parameter, such as the employed correlation threshold of scheduled transmission of giving this mobile radio station on this shared downlink traffic channel of detecting.

In an exemplary specific embodiment; By before the scheduled transmission on this shared downlink traffic channel; To send to this mobile radio station with the control signal that moves specific sequence institute shade earlier, notify the scheduled transmission on this shared downlink traffic channel to this mobile radio station.This mobile radio station is through being configured to: keep watch on this downlink control channel; And the mobile specific sequence cross-correlation of control signal received on this control channel and its oneself is joined, to detect the scheduled transmission on this shared downlink traffic channel.Relating value is to produce from this control signal, and relatively this relating value and correlation threshold.When this relating value met this threshold value, this mobile radio station was in the corresponding time interval that receives this scheduled transmission, and decoding should be shared downlink traffic channel.When this mobile radio station was being expected RRC message from radio network controller, this correlation threshold can be lowered, to reduce to omit detecting (that is this scheduled transmission failure of this mobile radio station detecting) possibility.

For example, this mobile radio station can be in response to handover event, and sends RRC message to this radio network controller.In this situation, it switches the affirmation of message this mobile radio station expection.Therefore, this mobile radio station can reduce to be used to detect this correlation threshold of the scheduled transmission on the downlink sharied signal channel, to reduce to omit the detecting possibility.

Description of drawings

Fig. 1 illustrates exemplary mobile communications network.

Fig. 2 illustrates exemplary mobile radio station.

Fig. 3 illustrates a kind of scheduled transmission sharing on the downlink traffic channel that is used to detect.

Fig. 4 illustrates a kind of detecting of being implemented by the base station in the example procedure of sharing the scheduled transmission on the downlink traffic channel.

Embodiment

Fig. 1 illustrates and is used to the exemplary wireless communications network 10 that one or more mobile radio stations 100 provide the mobile communication service.The word of using among this paper " mobile radio station " means any portable communicator with the ability that is wirelessly connected to communication network.Word " mobile radio station " includes, but is not limited to mobile phone, beeper, personal digital assistant and on knee or hand-held computer.This exemplary wireless communications network 10 comprises WCDMA (WCDMA) system like third generation partner program (3GPP) appointment.It will be understood by those skilled in the art that the present invention also can be used in the mobile communications network that is the basis with other standards, such as cdma2000 (TIA-2000), 1xEV-DO (TIA-856a) and WiMAX (IEEE 802.16).

Cordless communication network 10 comprises core network (CN) 20 and the one or more radio access network (RAN) 30 that is connected to one or more external packet data networks (such as the internet).Core network 20 is responsible for the exchange and the route of the calling between mobile radio station 100 and external network.This core network 20 can comprise mobile switching centre (MSC) 22 that is used to provide circuit switched service and the Serving GPRS Support Node (SGSN) 24 that is used to provide packet-switched services.The major function of this RAN30 is intended to the access that provides this core network 20 for mobile radio station (MS) 100.RAN30 comprises one or more radio network sub-system (RNS) 32.RNS32 comprises radio network controller (RNC) 34 and one or more base station (BS) 36 (in the WCDMA standard, being called Node B).This specification uses general word " base station (BS) ", but not uses the special-purpose word " Node B " of WCDMA.

BS36 communicates by letter with mobile radio station 100 and is associated in the sub-district usually through air interface.BS36 can provide service in more than one sub-district.This RNC34 connects the networking component of RAN30 to core network 20 and control RAN function.BS36 and radio resource and termination radio resource control (RRC) in its net territory of RNC34 management.RRC is a kind of agreement of controlling mobile radio station 100 by RNC34.The RRC function of being carried out by RNC34 comprises measurement report, Active Set management and switching controls.

It is that a kind of the implementation by cordless communication network 10 divided into groups to the method for mobile radio station 100 on down link, to transmit that high-speed downlink packet inserts (HSDPA).HSDPA is the evolution of WCDMA standard.Adopt HSDPA in the WCDMA standard release version 5.The main application of HSDPA is intended to use enhancement function (, physical layer hybrid automatic repetitive requests (HARQ) adaptive such as fast dispatch, rapid link, less grouping size and many yards transmission) to increase data throughout.HSDPA utilizes the sudden essence (bursty nature) of grouped data so that a plurality of user shares available radio resource, and uses those resources by this more expeditiously.

HSDPA provide one be used for the new transfer channel that on down link high-speed packet transmits (be called high-speed downlink shared channel (HS-DSCH) and three new physics channels: High-Speed Physical Downlink Shared Channel (HS-PDSCH), in order to carry user data; High-Speed Shared Control Channel (HS-SCCH), in order to carry control signal, these control signals are to be used for discerning the mobile radio station 100 that just is being scheduled and to be used in reference to the required transmission parameter of mobile radio station 100 decoding HS-PDSCH is shown; And High-Speed Dedicated Physical Control Channel (HS-DPCCH), in order to carrying uplink control signal, such as the ack/nack signal that is used for the H-ARQ operation and be used to dispatch and the channel quality indication (CQI) of rate controlled.According to WCDMA standard release version 5, HSDPA combines corresponding associating DPCH (A-DPCH) running in up link and the both downlink all the time.A-DPCH is used for transmission power control commands, and also can be used for sending the RRC signaling between mobile radio station 100 and RNC34.

The last transmission of HS-DSCH is divided into 2 milliseconds of chronomeres (being called Transmission Time Interval (TTI)).TTI further is divided into 3 time slots (each time slot is 0.667 millisecond).TTI is the basic time unit that is used for scheduling mobile radio station 100 on HS-DSCH.Scheduling be one by the performed function of the scheduler that is arranged in serving BS broadcasts 36.This scheduler that is arranged in these serving BS broadcasts 36 places is according to confirming that such as following factor each TTI should receive the mobile radio station 100 of data: the channel condition that each mobile radio station 100 is reported; Be shelved on the data volume in the buffer of each mobile radio station 100; Reach the average throughput of each mobile radio station 100; And any service quality (QoS) guarantees.The typical case confirms dispatching algorithm by network operator.During any given TTI, BS36 is dispensed to many 15 channel codes and gives one or more mobile radio stations 100.

BS36 discerns the mobile radio station 100, assignment of code and the transformat that just are being scheduled through on HS-SCCH, transmitting control signal, and is as shown in Figure 3.The word of using in this article " control signal " means the signal that carries control information that BS36 transfers to mobile radio station 100, with the service signal of difference carry user data.HS-SCCH is a kind of fixed-rate channel (60kbps, flare factor=128), is used for before corresponding TTI begins, and the transmission mobile radio station is discerned status and is used for the transmission parameter of HS-PDSCH.The length of HS-SCCH piece is three time slots and is divided into two parts.Part 1 comprises a time slot and carries the required key message of mobile radio station 100 beginning demodulation HS-PDSCH, such as the assignment of code that is used for HS-PDSSCH, transmission block size and modulation scheme.Part 2 comprises two time slots and carries low key message, such as Cyclical Redundancy Check (CRC) and HARQ procedural information.Two the slot transmission HS-SCCHs of BS36 before this corresponding TTI begins.These two parts are to transmit together with the mobile specific sequence of the mobile radio station of being dispatched among this corresponding TTI of identification 100.For example, can be with being that unique shade sequence is applied to control signal for mobile radio station.But word " is moved specific signal " should be broadly interpreted as any sequence that means unique identification mobile radio station.Whether as mentioned below, it is interrelated with the control signal that is received that the mobile radio station 100 that just is being scheduled can move it specific sequence, just be scheduled to confirm it.

Mobile radio station 100 is kept watch on HS-SCCH, when is scheduled to receive the grouped data on the HS-PDSCH to confirm it.The part 1 that mobile radio station 100 makes HS-SCCH with move specific shade sequence cross-correlation and join, producing relating value (correlation value), and relatively this relating value and correlation threshold.Among this paper this process is called HS-SCCH detecting or scheduled transmission detecting.Simultaneously, the part 1 of mobile radio station 100 decoding HS-SCCH is to obtain the required transmission parameter of decoding HS-PDSCH.Mobile radio station 100 disposes its receiver after decoded portion 1, receiving the data on the HS-PDSCH, and the part 2 of the HS-SCCH that begins to decode, this part 2 comprises CRC and HARQ procedural information.Mobile radio station 100 sends the ACK/NACK designator to BS36 on HS-DPCCH after decoding HS-PDSCH, receive grouped data to indicate whether success.In the application that coexists of on February 19th, 2004 application, describe the part 1 that is used to make HS-SCCH in No. the 10/780th, 633, the patent application and move the corresponding technology that specific sequence cross-correlation joins, this case is incorporated herein with way of reference.

The employed correlation threshold of scheduled transmission that mobile radio station 100 detectings are shared on the downlink traffic channel (that is HS-SCCH detecting) is represented the balance between error detection (false detection) possibility and omission detecting (missed detection) possibility.Error detection betides mobile radio station 100 and confirms that by error it is the user who is scheduled.The omission detecting betides mobile radio station 100 can't detect the scheduled transmission of giving this mobile radio station 100 on the downlink traffic channel sharing.Error detection causes in the mobile radio station 100 power consumption to increase, and this is owing to this mobile radio station optionally decode part 2 and the HS-PDSCH of HS-SCCH.The part 2 of mobile radio station 100 decoding HS-SCCH and the trial of HS-PDSCH will be failed.On the other hand, omit detecting and cause throughput to reduce, reason is when the grouping that mobile radio station 100 can't be confirmed to be transmitted, and must transfer data to this mobile radio station 100 again.

Owing to coordinate the complexity of the downlink transmission on the HS-DSCH in the different districts, so, do not adopt soft handover for HS-DSCH when mobile radio station 100 during in moving between cells.As alternatively, use direct-cut operation.Switching controls is the part of the performed RRC function of RNC34.Mobile radio station 100 is measured the twinkling signal of the pilot signal that each sub-district receives in the Active Set of comfortable these mobile radio stations to interference ratio (SIR), and to the sub-district request service that peak signal is provided.Along with this mobile radio station 100 moves to the frontier district between the sub-district, will successively decrease from the signal strength signal intensity of Serving cell, the signal strength signal intensity from adjacent cell in the Active Set of this mobile radio station will increase progressively simultaneously.When the signal strength signal intensity that surpasses from the signal strength signal intensity of this adjacent cell from this present Serving cell, this mobile radio station 100 sends through this present Serving cell and handovers request to RNC34.This handoff request identification is used for the Target cell of this switching.RNC34 begins to reconfigure process, to this Target cell, and in known system, through this present serving BS broadcasts 36, will reconfigure message back to this mobile radio station 100 with routing packets data again.Receive and reconfigure after the message, this mobile radio station 100 switches to this Target cell, and in this Target cell, sends and handover complete message to RNC34, should switch to accomplish.The BS36 that is used for this Target cell serves as the role as serving BS broadcasts 36, and the beginning on HS-PDSCH transmitting grouped data to this mobile radio station 100.

In WCDMA standard release version 6, can be in the frequency band on the HS-PDSCH or on A-DPCH, transmission is 100 RRC message (such as switching message) from RNC34 to mobile radio station.Use the possibility of RRC signaling in the frequency band on the HS-PDSCH to be used, be exclusively used in the radio resource of signaling with minimizing.By signaling in the service band, the BS quantity of power of distributing to A-DPCH is reduced, and increases the available horsepower that is used for HS-DSCH by this.If signaling in the service band, then DPCH only carries power control information and is called broken shape DPCH (fractional DPCH; F-DPCH).

When signaling in the frequency band on the HS-DSCH is when being used for the RRC signaling, the omission of crucial RRC message detecting becomes concern.When mobile radio station 100 is just running in the border district between two sub-districts, can significantly fluctuate from the signal quality of current service BS36.Changeover program indicates the time of need switching from mobile radio station 100 to begin to accomplishing the about 200-800 millisecond of typical case's cost.To increase from the deterioration of the signal quality of Serving cell and to omit the detecting possibility.The crucial RRC message that mobile radio station 100 is intended to this mobile radio station 100 owing to the signal quality in worsening causes detecting (such as switching message) failure can cause throughput to reduce, and under worst case, can cause radio link failure.

According to a specific embodiment of the present invention, when mobile radio station 100 was just being expected important RRC message, mobile radio station 100 detectings were shared the employed correlation threshold of scheduled transmission on the downlink traffic channel through adaptive, to reduce to omit the detecting possibility.For example, when mobile radio station 100 sends handoff request (in WCDMA, being called incident 1D) to RNC34, will at the fixed time expect the affirmation (in WCDMA, be called and reconfigure message) of this handoff request in (for example, 100-400 millisecond).In mobile radio station 100 was just being expected during this period of affirmation of this handoff request, this mobile radio station 100 can reduce HS-SCCH and detect employed correlation threshold, reduces to omit the detecting possibility by this.The utilization of this technology is not limited to the sub-district and reselects, but can be used for other handover events.The word of using in this article " handover event " means any incident of the radio link variation that causes between mobile radio station 100 and RAN30.Switch message and comprise the message that handover event triggers.Switch message except comprising the message that is used for reselecting the sub-district, also comprise the message of the Active Set that is used to revise mobile radio station 100.For example; When Active Sets are revised in mobile radio station 100 request (for example; With the sub-district be added to Active Set (incident 1A), the self-activation collection removes sub-district (incident 1B) or replaces the existing sub-district (incident 1C) in the Active Set with new sub-district), can adaptive this correlation threshold with improvement HS-SCCH detecting.Except switching message, can also use other message or impel RNC34 to send the trigger event of down link RRC message to mobile radio station 100, be used as adjusting the triggering item of correlation threshold.

The adjustment of correlation threshold also can be depending on the signal strength signal intensity from Serving cell.Mobile radio station 100 can determine whether to want assessing signal intensity in adaptive correlation threshold or the definite adjustment amount process.For example, when mobile radio station 100 receives the strong signal from Serving cell, then can carry out fine tune or do not adjust.When mobile radio station 100 receives the weak signal from Serving cell, then can more significantly adjust.

When mobile radio station 100 reduced correlation threshold in response to trigger event, mobile radio station 100 also can be confirmed to use the time window length during the correlation threshold that reduces, and is called the threshold detection time window through reducing among this paper.This length through the threshold detection time window that reduces can be depending on event type, and can confirm based on statistics (such as between trigger event and from the average latency between the response RRC signaling of RNC34).Alternative way does, can calculate this in advance through the length of the correlation threshold time window that reduces and be stored in the question blank.In any situation, mobile radio station 100 is adjusted this threshold value in response to trigger event, and when this when the threshold detection time window that reduces finishes, normal value is got back in the threshold value adjustment.

Fig. 2 illustrates according to exemplary mobile radio station 100 of the present invention.Mobile radio station 100 comprises the RF circuit 102 that is coupled to one or more antennas 112 and baseband processing circuitry 120.This RF circuit 102 comprises receiver front end 104 and transmitter front-end 106.Receiver front end 104 filtering, amplification and down converted signal through receiving.The conversion of signals through receiving that analog to digital converter 108 will be exported from this receiver front end 104 becomes to be fit to the digital signal that this baseband processing circuitry 120 is handled.In transmission ends, the transmission signals that digital to analog converter 110 will be exported from this baseband processing circuitry 120 converts the analog signal that is fit to transmission to.Transmitter front end 106 is modulated to analogue transmission signal the RF carrier wave that is used to transmit.

Baseband processing circuitry 120 comprises demodulator 122, decoding circuit 124, measuring circuit (MC) 126, control unit 128, coding circuit 130 and modulator 132.Can in comprising the treatment circuit of one or more processors, implement the element of this baseband processing circuitry 120.The signal that demodulator 122 demodulation receive through air interface from mobile radio station 100 and will be through the signal provision of demodulation to this decoding circuit 124.For example, demodulator 122 can comprise RAKE receiver, generalized RAKE (GRAKE) receiver or chip equalization (chip equalization) receiver.Can dispose this demodulator 122 by this control unit 128.For example, this control unit 128 can be configured to RAKE receiver or GRAKE receiver (or chip equalizer receiver) with this receiver selectivity.Control unit 128 also can be selected the antenna amount that is used to detect, and RAKE and/or GRAKE rake refer to the distribution of (or chip equalizer tap) or other receiver resources.

Decoding circuit 124 is carried out channel-decoding, and isolates and use data and control signaling.The control signaling is transferred into control unit 128, the integrated operation of its control mobile radio station 100.Control unit 128 (it can comprise one or more processors) handles layer 2 and layer 3 signaling and output control signal are with the operation of control mobile radio station 100.Control signal (shown in dotted line) control demodulator 122, decoding circuit 124, coding circuit 130 and modulator 132.Measuring circuit 126 is carried out the signal of measuring through receiving, and such as signal strength measurement, signal quality measured or the like, and measurement result to control unit 128 is provided.Coding circuit 130 is carried out user data and the chnnel coding of controlling signaling.Modulator 132 digital modulation are applied to the transmission signals of this digital to analog converter 110 from the signal of these coding circuit 130 outputs with generation.

Receiver front end 104, analog to digital converter 108, demodulator 122 and decoding circuit 124 constitute receiver.Transmitter front end 106, digital to analog converter 110, modulator 132 and coding circuit 130 constitute reflector.Can use various hardware and software to implement the element or the assembly of mobile radio station 100, such as, baseband processing circuitry 120.For example, can use microprocessor, microcomputer, digital signal processor, specialized hardware (such as special-purpose IC (ASIC)) or its to make up and implement this baseband processing circuitry 120.Further, should understand that the function of this baseband processing circuitry 120 can be integrated in single assembly (such as single ASIC or microprocessor), maybe can be distributed in several devices.

Fig. 4 illustrates the flow chart of the example procedure that mobile radio station 100 implemented.This process is when mobile radio station 100 has ongoing HSDPA session, to carry out (piece 200).Between the HSDP session, mobile radio station 100 periodically carries out signal strength measurement (piece 202).Mobile radio station 100 use signal strength measurements determine when and change Active Set and timing changing Serving cell.Among this paper these incidents are called handover event.Handover event comprises: the sub-district is added to Active Set (incident 1A); The self-activation collection removes sub-district (incident 1B); Replace the existing sub-district (incident 1C) in the Active Set with new sub-district; And change Serving cell (incident 1D).Mobile radio station 100 is detected handover event according to signal strength measurement, as known in the art.After detecting switching (HO) incident (piece 204), mobile radio station 100 confirms whether the handover event of being detected is critical event (step 206).If handover event is not a critical event, then mobile radio station 100 sends a notification message (for example, incident 1A, 1B, 1C and 1D) to RNC34, to notify this incident (piece 208) to RNC34 and to wait for and reply message.In this situation, mobile radio station 100 uses normal correlation threshold to carry out HS-SCCH detecting (piece 210).On the other hand, if handover event is a critical event, then mobile radio station 100 sends RRC message to RNC34 (piece 212) on up link, and uses through the correlation threshold of adjustment and carry out HS-SCCH detecting (piece 214).After receiving desired response, or this is after the threshold detection time window that reduces exceeds the time limit, and mobile radio station 100 changes gets back to default HS-SCCH detection parameters (piece 216).The instance of critical event comprises: incident 1A and 1C in the time of a little less than from the signal strength signal intensity of Serving cell; And incident 1D.If when Serving cell receives strong waveguide frequency signal, then incident 1A and 1C can be considered non-key incident.In some specific embodiments, incident 1B can be considered non-key incident.

In the exemplary specific embodiment of the present invention mentioned above, the correlation threshold of the mobile radio station 100 adaptive HS-SCCH of being used for detecting in order to reduce the error detection possibility.It will be understood by those skilled in the art that and to use other technologies to replace technology mentioned above, or except using technology mentioned above, extra use other technologies are with the possibility of the crucial RRC message of improvement detecting.For example, control unit 128 can dispose by adaptive receiver, with the possibility of the crucial RRC message of improvement detecting.If use RAKE receiver or GRAKE receiver to come the signal on the receiving downlink, then mobile radio station 100 can refer to distribute to HS-SCCH with extra RAKE or GRAKE rake when the crucial RRC message of expection.Adopt extra RAKE rake to refer to improvement is received the possibility that reaches correct decoding HS-SCCH, and reduce to omit the possibility of detecting by this.Alternative way does, mobile radio station 100 can use more senior receiver configuration (for example, the GRAKE configuration) to detect HS-SCCH when the crucial RRC message of expection, and otherwise the standard of use RAKE receiver is detected HS-SCCH.Also can come adaptive receiver by the quantity that changes reception antenna 112.Mentioned abovely also can implement for HS-PDSCH for the adaptive of HS-SCCH.Extensively, can adopt any receiver adaptive, to reduce the omission detecting possibility of HS-SCCH or HS-PDSCH.These adaptive adaptive and/or reception parameter adaptation of receiver configuration that comprise are such as the correlation threshold of HS-SCCH or HS-PDSCH.

Certainly, also can come embodiment of the present invention, and not break away from essential characteristic of the present invention by other modes except that the concrete proposition of this paper.In all aspects, the specific embodiment of the invention should be regarded as explaining orally and unrestricted, and the meaning that belongs to the claim scope of enclosing and all changes in the equal scope are contained in the present invention.

Claims

1. the method for the control messages of transmitting in the frequency band on the downlink traffic channel is shared in a detecting of being implemented by mobile radio station, and this method comprises:

Through being intended to move the interrelated scheduled transmission of detecting on this shared downlink traffic channel of control signals transmitted on specific sequence and the control channel to making before the scheduled transmission on the shared downlink traffic channel of this mobile radio station; And

When the control messages on this shared downlink traffic channel of expection, adjustment is used for the correlation threshold of this scheduled transmission detecting, to reduce to omit the detecting possibility.

2. method as claimed in claim 1, the scheduled transmission of wherein detecting on this shared downlink traffic channel comprises: the relating value and this correlation threshold that relatively produce from this control signal.

3. method as claimed in claim 1 is wherein adjusted this correlation threshold and is comprised: adjusts this correlation threshold in response to handover event when this control messages of expection.

4. method as claimed in claim 3 further comprises: send a request message in response to this handover event, wherein carry out this adjustment of this correlation threshold, with the detecting of improvement to the answer of this request message.

5. method as claimed in claim 4, wherein this request message comprises the request that changes Serving cell.

6. method as claimed in claim 4, wherein this request message comprises member's in the Active Set that changes this mobile radio station request.

7. method as claimed in claim 3, wherein adjust this correlation threshold and comprise in response to handover event:

Confirm whether this handover event is critical event; And

If this handover event is a critical event, then adjust this correlation threshold.

8. method as claimed in claim 7 further comprises: if this handover event is not a critical event, this correlation threshold is remained unchanged.

9. method as claimed in claim 3 is wherein adjusted this correlation threshold and is comprised: changes this correlation threshold during the predetermined time cycle in response to handover event.

10. method as claimed in claim 9, wherein the duration of this predetermined period of time is depended on the type of this handover event.

11. method as claimed in claim 9 further comprises: when this predetermined period of time exceeds the time limit, adjust this correlation threshold to preceding value.

12. method as claimed in claim 1 is wherein adjusted this correlation threshold and is comprised: the variable quantity of confirming this correlation threshold.

13. like the method for claim 12, wherein this variable quantity of this correlation threshold is according to confirming from the intensity of the signal of Serving cell in this mobile radio station place reception.

14. like the method for claim 12, wherein this variable quantity of this correlation threshold is to confirm according to the type of handover event.

15. method as claimed in claim 1, wherein in the WCDMA system, this control channel comprises High-Speed Shared Control Channel; And wherein in the WCDMA system, this shared downlink traffic channel comprises High-Speed Physical Downlink Shared Channel.

16. a mobile radio station comprises:

Receiver, it is through being configured to receive the grouping of sharing on the downlink traffic channel;

Control unit, its through configuration in order to: move on specific sequence and the control channel interrelated detecting of control signals transmitted and transmit on this shared downlink traffic channel the said packet scheduling of this mobile radio station through making before the scheduled transmission on this shared downlink traffic channel; And when on this mobile radio station is being expected this shared downlink traffic channel, desiring to send to the control messages of this mobile radio station, adaptive this receiver is to reduce to omit the detecting possibility.

17. like the mobile radio station of claim 16, wherein this control unit through configuration in order to: when on this mobile radio station is being expected this shared downlink traffic channel, desiring to send to the control messages of this mobile radio station, the configuration through changing this receiver comes adaptive this receiver.

18. like the mobile radio station of claim 17, wherein this control unit through configuration in order to: change the configuration of this receiver through the receiving mode that changes this receiver.

19. like the mobile radio station of claim 18, wherein this control unit through configuration in order to: on being expected at this shared downlink traffic channel, during the defeated control messages of tendency to develop, this receiving mode is changed into the generalized RAKE receiving mode from the RAKE receiving mode.

20. like the mobile radio station of claim 18, wherein this control unit through configuration in order to: change this receiving mode through changing the reception antenna quantity that this receiver uses.

21. mobile radio station like claim 17; Wherein this receiver comprises having RAKE receiver or the generalized RAKE receiver that a plurality of RAKE rakes refer to, and wherein this control unit refers to that in order to the RAKE rake that is used for control channel through change distribution changes receiving mode through configuration.

22. like the mobile radio station of claim 16, when wherein on this mobile radio station is being expected this shared downlink traffic channel, desiring to send to the control messages of this mobile radio station, next adaptive this receiver of reception parameter that this control unit uses through changing this receiver.

23. like the mobile radio station of claim 22, wherein this control unit through configuration in order to: through making on the control channel control signals transmitted before the scheduled transmission on this shared downlink traffic channel and moving specific sequence cross-correlation and join to come and adaptively should share the scheduled transmission on the downlink traffic channel.

24. like the mobile radio station of claim 23, wherein in the WCDMA system, this control channel comprises High-Speed Shared Control Channel; And wherein in the WCDMA system, this shared downlink traffic channel comprises High-Speed Physical Downlink Shared Channel.

25. like the mobile radio station of claim 24, wherein this control unit through configuration in order to: through produce relating value and relatively this relating value make this control signal and move specific sequence cross-correlation couplet with correlation threshold.

26. like the mobile radio station of claim 25, wherein this control unit through configuration in order to: during when the control messages of expection on this shared downlink traffic channel, come adaptive this receiver through adaptive this correlation threshold.

27. like the mobile radio station of claim 26, wherein this control unit through configuration in order to when in response to handover event adaptive this correlation threshold.

28. like the mobile radio station of claim 27, wherein this control unit through the configuration in order to: send a request message in response to this handover event; And wherein this control unit through configuration in order to: adjust this correlation threshold, with the detecting of improvement to the answer of this request message.

29. like the mobile radio station of claim 28, wherein this request message comprises the request that changes Serving cell.

30. like the mobile radio station of claim 28, wherein this request message comprises member's in the Active Set that changes this mobile radio station request.

31. like the mobile radio station of claim 27, wherein this control unit through the configuration in order to: if this handover event is a critical event, then adjust this correlation threshold.

32. like the mobile radio station of claim 31, wherein this control unit through the configuration in order to: if this handover event is not a critical event, this correlation threshold is remained unchanged.

33. like the mobile radio station of claim 27, wherein this control unit through configuration in order to: during when the control messages of expection on this shared downlink traffic channel, come adaptive this correlation threshold through changing this correlation threshold during the predetermined time cycle.

34. like the mobile radio station of claim 33, wherein this predetermined period of time depends on the type of this handover event.

35. like the mobile radio station of claim 33, wherein this control unit through the configuration in order to: when this predetermined period of time exceeds the time limit, adjust this correlation threshold to preceding value.

36. like the mobile radio station of claim 27, wherein this control unit through configuration in order to: the variable quantity through confirming this correlation threshold comes adaptive this correlation threshold.

37. like the mobile radio station of claim 36, wherein this control unit through configuration in order to: according to receive this variable quantity of confirming this correlation threshold from the intensity of the signal of Serving cell at this mobile radio station place.

38. like the mobile radio station of claim 36, wherein this control unit through configuration in order to this variable quantity of confirming this correlation threshold according to the type of this handover event.

39. the method for the control messages of transmitting in the frequency band on the downlink traffic channel is shared in a detecting of being implemented by mobile radio station, this method comprises:

When on this mobile radio station is being expected this shared downlink traffic channel, desiring to send to the control messages of this mobile radio station, the receiver in adaptive this mobile radio station is to reduce the omission detecting possibility of the grouping on this shared downlink traffic channel.

40. like the method for claim 39, wherein adaptive this receiver comprises: when on this mobile radio station is being expected this shared downlink traffic channel, desiring to send to the control messages of this mobile radio station, change the receiver configuration.

41., wherein change this receiver configuration and comprise: the receiving mode that changes this receiver like the method for claim 40.

42. like the method for claim 41, this receiving mode that wherein changes this receiver comprises: change into the generalized RAKE receiving mode from the RAKE receiving mode.

43. like the method for claim 41, this receiving mode that wherein changes this receiver comprises: change the reception antenna quantity that this receiver uses.

44. like the method for claim 40, wherein this receiver comprises having RAKE receiver or the generalized RAKE receiver that a plurality of RAKE rakes refer to, and wherein changes the distribution that this receiver configuration comprises that the said RAKE rake of change refers to.

45. like the method for claim 39, wherein adaptive this receiver comprises: when on this mobile radio station is being expected this shared downlink traffic channel, desiring to send to the control messages of this mobile radio station, change the reception parameter that this receiver uses.

46. the method like claim 45 further comprises: keep watch on control channel, whether be scheduled to receive the data on this shared downlink traffic channel to detect this mobile radio station.

47. like the method for claim 46, wherein in the WCDMA system, this control channel comprises High-Speed Shared Control Channel; And wherein in the WCDMA system, this shared downlink traffic channel comprises High-Speed Physical Downlink Shared Channel.

48. like the method for claim 46, wherein keep watch on this control channel, whether be scheduled and comprise with the data that receive on this shared downlink traffic channel to detect this mobile radio station:

Make control signal and move specific sequence cross-correlation couplet, to produce relating value; And

Relatively this relating value and correlation threshold.

49. like the method for claim 48, wherein adaptive this receiver comprises: when this control messages on this shared downlink traffic channel of expection, adaptive this correlation threshold.

50. like the method for claim 49, wherein adaptive this correlation threshold comprises when this control messages of expection: adaptive this correlation threshold in response to handover event.

51. the method like claim 50 further comprises: send a request message in response to this handover event, wherein carry out the adjustment of this correlation threshold, with the detecting of improvement to the answer of this request message.

52. like the method for claim 51, wherein this request message comprises the request that changes Serving cell.

53. like the method for claim 51, wherein this request message comprises member's in the Active Set that changes this mobile radio station request.

54. like the method for claim 50, wherein adaptive this correlation threshold comprises in response to handover event:

Confirm whether this handover event is critical event; And

55. the method like claim 54 further comprises:, this correlation threshold is remained unchanged if this handover event is not a critical event.

56. like the method for claim 50, wherein adaptive this correlation threshold comprises when the control messages on this shared downlink traffic channel of expection: change this correlation threshold during the predetermined time cycle.

57. like the method for claim 56, wherein the duration of this predetermined period of time is depended on the type of this handover event.

58. the method like claim 56 further comprises: when this predetermined period of time exceeds the time limit, adjust this correlation threshold to preceding value.

59. like the method for claim 50, wherein adaptive this correlation threshold comprises: the variable quantity of confirming this correlation threshold.

60. like the method for claim 59, wherein this variable quantity is to confirm from the intensity of the signal of base station in the Serving cell according to receiving at this mobile radio station place.

61. like the method for claim 59, wherein this variable quantity is to confirm according to the type of this handover event.