CN100502550C - Dynamic shared forward link channel for a wireless communication system - Google Patents
Dynamic shared forward link channel for a wireless communication system Download PDFInfo
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- CN100502550C CN100502550C CNB2004800236216A CN200480023621A CN100502550C CN 100502550 C CN100502550 C CN 100502550C CN B2004800236216 A CNB2004800236216 A CN B2004800236216A CN 200480023621 A CN200480023621 A CN 200480023621A CN 100502550 C CN100502550 C CN 100502550C
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Abstract
A dynamic shared forward link channel (or 'data' channel) is used to send multicast data to a group of wireless devices, e.g., using a common long code mask for the data channel. Reference power control (PC) bits are also sent on the data channel and used for signal quality estimation. A shared forward link control channel is used to send user-specific signaling to individual wireless devices, e.g., using time division multiplexing (TDM) and a unique long code mask for each wireless device. A shared forward link indicator channel is used to send reverse link (RL) PC bits to the wireless devices, e.g., using TDM. The data channel is jointly power controlled by all wireless devices receiving the data channel. The control and indicator channels are individually power controlled by each wireless device such that the signaling and RL PC bits sent on these channels for the wireless device are reliably received.
Description
Require the priority under 35 sections 119 in U.S.
The provisional application sequence number that is called " method and apparatus that is used for the dynamic shared forward link channel of wireless communication system " that the application requires to submit on July 11st, 2003 is 60/486, the priority of 838 application, with the provisional application sequence number of " method and apparatus that is used for the dynamic shared forward link channel of wireless communication system " by name submitted on August 18th, 2003 be 60/496, the priority of 305 application, all transfer the application's assignee at this, therefore introduce its content herein as a reference.
Technical field
The present invention relates generally to communication system, more specifically, relate to the dynamic shared forward link channel of wireless communication system.
Background technology
Wireless communication system can provide clean culture, multicast and/or broadcast service.Unicast services is provided at the point-to-point communication between at least one base station and the particular wireless device.Multicast service is provided at the point-to-multipoint delivery between at least one base station and the one group of wireless device.Broadcast service is provided at least one base station and specifies the point-to-multipoint delivery between all wireless devices in the coverage.
Clean culture, multicast and broadcast service are used for different application and have different demands.Unicast services is generally used for voice and packet data call, and needs special-purpose system resource (that is Traffic Channel) to be used for forward link and reverse link usually for the ease of two-way communication.Forward link (or down link) refers to the communication link from the base station to the wireless device, and reverse link (or up link) refers to the communication link from the wireless device to the base station.All wireless devices in the coverage of broadcast service through being usually used in broadcast data is sent to appointment.Broadcast data can just can be sent effectively by the wall scroll broadcast channel, and the control information of this broadcast channel can send by relevant control channel.Because broadcast service provides one-way communication usually, therefore only need system resource seldom or do not need system resource for reverse link.
The multicast service can be used for multi-case data is sent to from least one base station the wireless device of particular group.Multi-case data is the interested business datums of a plurality of wireless devices, and can be about such as contents such as voice, news, weather, film, sport events.The multicast service can be supported the two-way communication between at least one base station and a plurality of wireless device, although a large amount of transmission will be undertaken by forward link.Can realize the multicast service by identical multi-case data is sent to each wireless device via independent forward link channel.Yet, utilize the redundant transmission that many forward link channels carry out multi-case data can consume system resources by same base station, and the number of the wireless device that can the limiting multicast service can support.
Therefore wooden exist exists, to the technology requirement of multicast service can more effectively be provided in wireless communication system.
Summary of the invention
This paper has described by using dynamic shared forward link (FL) channel that the technology of multicast service is provided effectively." sharing " used herein channel is the channel that can be received by a plurality of wireless devices, and " special use " channel is the channel that is used for particular wireless device.
Dynamic shared forward link channel is shared forward link data channel (perhaps abbreviating " data " channel as), and it is used for multi-case data is sent to one group of wireless device.Can be for example by using disturbing/long code (scrambling/long code) that Public Long Code Mask (common long code mask) based on data channel generates, send multi-case data.For the ease of data channel being carried out power control, the reference power that can utilize data channel to send given value is controlled (PC) bit, and this reference power control bit can be used to carry out the signal quality estimation by wireless device.Shared forward link control channel (or abbreviating " control " channel as) can be used for specific user (user-specific) signaling (for example, about basic call operation and other purpose) is sent to each wireless device.The specific user's signaling that is used for all wireless devices can for example send by using Time Division Multiplexing.Signaling for each wireless device can be passed through, and for example uses to disturb/long code sends, and this disturbs/and long code is based on that unique Long Code Mask of this wireless device generates.Shared forward link indicating channel (or being called for short it, " indication " channel (" indication " channel)) can be used for reverse link (RL) PC bit is sent to wireless device (for example, by using TDM).RL PC bit is sent to each wireless device, and is used to adjust the transmitting power of wireless device to reverse link.
For " dynamically " that makes multicast service covers more conveniently, and in order to support power control and to reduce communication delay, each receives the wireless device that multicast serves can keep the reverse link that is connected with one or more base stations.Dynamically the meaning that covers is, even wireless device still can receive the multicast service when mobile around system.Each wireless device can utilize reverse link pilot channel to send pilot tone (pilot) and FL PC bit.This FL PC bit is sent to one or more base stations, and is used to regulate the transmitting power of forward link channel.Each wireless device can also utilize reverse-link data channel and/or utilize the The function of backward power control channel to transmit data and/or signaling when needed.
The shared forward link data channel can jointly carry out power control by wireless device, thinks that all wireless devices obtain superperformance, have reduced transmitting power and interference simultaneously.Each wireless device can come the received signal quality of data estimator channel based on the reference PC bit that sends on the data channel, estimate to generate the FL PC bit that is used for data channel based on received signal quality, and utilize basic (primary) reverse power control subchannel that these FLPC bits are sent to one or more base stations.Each base station is based on the FL PC bit that is used for this data channel that receives from all wireless devices, the transmitting power of regulating this data channel.
Control and indicating channel can carry out power control by each wireless device, thereby realize the superperformance to each wireless device.Each wireless device can be estimated the received signal quality of control channel based on the RL PC bit that utilizes indicating channel to send to wireless device, estimate to generate the FL PC bit that is used to control with indicating channel based on this received signal quality, and utilize less important reverse power control subchannel that these FL PC bits are sent to one or more base stations.The transmitting power of control and indicating channel is regulated based on the FL PC bit that is used for these channels that receives from wireless device in each base station for each wireless device.
Below describe and be used to carry out soft handover and direct-cut operation so that the dynamic technology that covers.Other embodiment and each embodiment of the present invention and the embodiment that are used to provide the multicast service have below also been described.
Description of drawings
Fig. 1 has shown wireless communication system;
Fig. 2 has shown the one group of forward link channel that is used to provide the multicast service;
Fig. 3 has shown the transmission of the reference PC bit that utilizes F-FCH;
Fig. 4 has shown the one group of reverse chain channel that is used for each wireless device;
Fig. 5 A and 5B have shown two reverse power control subchannels of R-PICH;
Fig. 6 has shown the processing of being carried out by the base station that is used to provide the multicast service;
Fig. 7 has shown the processing of being carried out by wireless device that is used to receive the multicast service;
Fig. 8 has shown the block diagram of base station and wireless device;
Fig. 9 has shown the data processor that is used for F-FCH;
Figure 10 has shown the data processor that is used for F-DCCH;
Figure 11 has shown the data processor that is used for F-CPCCH; With
Figure 12 has shown the data processor that is used for R-PICH and R-FCH.
Embodiment
The word of Shi Yonging " exemplary " expression herein " as example, illustration or explanation ".Be described to any embodiment of " exemplary " herein and needn't be interpreted as more preferably or more useful than other embodiment.
Fig. 1 has shown the wireless communication system 100 with a plurality of base stations 110, and a plurality of base stations 110 provide communication service for a plurality of wireless devices 120.The base station is fixed base stations normally, can also be called as base transceiver station (BTS), Node B, access point or some other terms.Wireless device can be that fix or mobile, can also be called as travelling carriage (MS), mobile device (ME), subscriber equipment (UE), user terminal, subscriber unit or some other terms.Wireless device can be dispersed in system everywhere.Mobile switching centre (MSC) 130 provides coordination and the control to the base station.MSC can also be called as radio network controller (RNC) or some other terms.
System 100 can be code division multiple access (CDMA) system, and it can realize one or more CDMA standards, such as IS-2000, IS-856, IS-95, wideband CDMA (W-CDMA) etc.System 100 can also be time division multiple access (TDMA) system, and it realizes one or more TDMA standards, such as global system for mobile communications (GSM).These standards all are known in this area.Use dynamic shared forward link channel described herein provides the technology of multicast service can be used in the various wireless communication systems.For clarity sake, be in particular these technology of IS-2000 system description.
System 100 supports the multicast service, and can multi-case data be sent to one group of wireless device with effective and efficient manner.The various schemes that are used to provide the multicast service have below been described.Every kind of multicast scheme has one or more in the following characteristics:
● the shared forward link channel is used to multi-case data is sent to one group of wireless device, and can jointly carry out power control by these wireless devices;
● shared or dedicated forward link channel is used to specific user (user-specific) signaling is sent to each wireless device;
● the dynamic covering of multicast service is provided for each wireless device;
● each wireless device is kept reverse link and is connected so that dynamically cover, support power control and reduce communication delay; With
● for forward direction and the control of reverse chain channel execution power,, reduce transmitting power and interference simultaneously to realize good performance.
Table 1 has been listed five kinds of exemplary arrangement that are used to provide the multicast service.For these schemes, multi-case data can utilize forward fundamental channel (F-FCH) or forward supplemental channel (F-SCH) to send.F-FCH is the different embodiment of dynamic shared forward link channel with F-SCH.F-FCH can also be called forward direction multicast primary channel (F-MFCH) or other terms.Specific user's signaling of wireless device can utilize F-FCH, Forward Dedicated Control Channel (F-DCCH), forward packet data channel (F-PDCH) or Forward Common Control Channel (F-CCCH) to send.The RL PC information that is used to regulate the transmitting power of wireless device can utilize Forward Common Power Control Channel (F-CPCCH) to send, and it indicates control channel (F-ICCH) carrying by forward direction.Specific user's signaling of each wireless device and RL PC information can utilize the special-purpose F-DCCH that distributes to that wireless device to send.For simplicity's sake, in the following description, unless mention especially, forward link channel is a shared channel.Deliver on February 13rd, 2004, among the file 3GPP2 C.S0002-D of " about the physical layer standard correction D of cdma2000 spread spectrum system " version 1.0 by name, forward link and the reverse chain channel of IS-2000 have been described, this document is public Ke De, and is called " C.S0002-D " file hereinafter.Five kinds of multicast schemes in the table 1 below will be described in further detail.
Table 1
| The multicast scheme | Public multi-case data | Specific user's signaling | Specific user PC information |
| 1 | F-FCH | F-DCCH | F-CPCCH |
| 2 | F-FCH | F-FCH | F-CPCCH |
| 3 | F-FCH | Special-purpose F-DCCH | Special-purpose F-DCCH |
| 4 | F-SCH | F-CCCH | Do not have |
| 5 | F-FCH | F-PDCH | F-CPCCH |
1. multicast scheme 1:F-FCH, F-DCCH, and F-CPCCH
Fig. 2 has shown the forward link channel of the multicast service that is used for providing multicast scheme 1.Forward link channel comprises F-FCH, at least one F-DCCH and at least one F-CPCCH.F-FCH is used for multi-case data is sent to wireless device.F-DCCH is used in the TDM mode specific user's signaling being sent to wireless device.F-DCCH can transmit (1) and to the relevant signaling of system registration, basic call operation or the like, the message that (2) are used for handover, continuation or terminated call for paging and (3) of wireless device.These F-CPCCH are used to RL PC information is sent to wireless device.
Forward direction and reverse link transmit data with the form of frame.Frame is the predetermined time interval for given forward/reverse link channel.Every the forward/reverse link channel can utilize one or more frame sizes.Different forward/reverse link channels can utilize identical or different frame sizes.
F-FCH can use one or more frame sizes (for example, 20 milliseconds and/or 5 milliseconds) to transmit multi-case data.The frame size of F-FCH can be configured at the very start in calling, and can dynamic change between each frame.F-FCH can be with the data rate of " difference ", waits such as per second 9600,4800,2700,1500 bits (bps) and transmits multi-case data.F-FCH also interrelates with Public Long Code Mask (LCM), and this Public Long Code Mask is used to generate the long code of scrambling multi-case data.This wireless device is known the Long Code Mask of F-FCH, and can carry out additional descrambling, thereby recovers multi-case data.
Although for the sake of clarity, do not have shown in Figure 2ly in table 1, not list yet, one or more F-SCH also can be used for transmitting multi-case data, and can be shared in the mode identical with F-FCH.Every F-SCH can send with the mode of describing among the IS-2000.
As shown in Figure 2, every F-DCCH can use one or more frame sizes (for example, 20 milliseconds and/or 5 milliseconds) to transmit signaling, and this frame size can dynamic change between each frame.Every F-DCCH can also support discontinuous transmission (DTX), and it is illustrated in does not have data to send by F-DCCH in the given frame.The decision that can utilize the F-DCCH transmission maybe can not transmit for example can be, based on whether having the signaling that will send, makes on basis frame by frame.
According to number and/or other factors of the wireless device that receives the multicast service, can use one or more F-DCCH for the multicast service.If have only group's wireless device receiving the multicast service, then can use a F-DCCH.If more wireless device participates in the multicast service, then can increase additional F-DCCH.On the contrary, if no longer need to support the multicast service, then can remove F-DCCH.Every F-DCCH can transmit signaling for the whole or subclass of wireless device.Each wireless device can be assigned to a F-DCCH.In this case, no matter when signaling is effective, and based on the validity of F-DCCH, the signaling that is used for each wireless device can utilize the F-DCCH of distribution to send.Wireless device can also be assigned to many F-DCCH, and this equipment can utilize F-DCCH to receive signaling.In this case, the signaling that is used for wireless device can utilize any of F-DCCH of distribution to send.Each wireless device is associated with unique Long Code Mask.The signaling that is used for each wireless device can use the long code that generates by the unique Long Code Mask that uses this equipment to come by scrambling, and can come descrambling by that wireless device.
Can use different radio configuration for F-FCH with F-DCCH.Every kind of radio configuration all is associated with specific physical layer parameter such as data rate, modulating characteristic and the rate of spread (spreading rate).The parameter of every kind of radio configuration is all described in aforesaid C.S0002-D file.
According to the number of the wireless device that receives the multicast service, can use one or more F-CPCCH for the multicast service.Can use wall scroll F-CPCCH during initialization, and additional F-CPCCH can when participating in the multicast service, more wireless device be added again.A plurality of wireless devices can be assigned to every F-CPCCH.Every F-CPCCH transmits a Forward Power Control Subchannel for the wireless device that each is assigned to this F-CPCCH.Every Forward Power Control Subchannel transmits RL PC bit for the wireless device that distributes with multiple a kind of speed in may (for example, 800,400 and 200bps) speed.Every F-CPCCH transmits the RLPC bit with fixing frame size (for example, 10 milliseconds) for its wireless device that is assigned with.For each frame, each F-CPCCH is that the wireless device of all distribution transmits RL PC bit in the TDM mode and in the pseudorandom position of determining based on Public Long Code Mask, as described below.For simplicity's sake, below describe F-DCCH of supposition and F-CPCCH and be used to the multicast service.
Every forward link channel is associated with different walsh function or Quasi Orthogonal Function (QOF), and this Quasi Orthogonal Function is used for the data that send on " covering (cover) " that forward link channel.Covering is the processing of given modulation symbol (or one group of L modulation symbol with identical value) and whole L chips of one section long walsh function of L chip be multiply by mutually L the cover symbol that acquisition will transmit.Separate covering (Decovering) and be the symbol that will receive and multiply by mutually with L chip of identical L chip walsh function and obtain L processing of separating the symbol of covering, this L the symbol of separating covering added up to obtain the estimation to the modulation symbol that is transmitted.This covers the orthogonality in the middle of many forward link channels that obtain to send simultaneously.Be called as during this being coated with " channelizing ".
Notified F-FCH that has been assigned to about this equipment of each wireless device and the different parameters of F-DCCH and F-CPCCH.For example, each wireless device can notified walsh function about F-FCH, F-DCCH and F-CPCCH, data rate about forward link channel, Public Long Code Mask about F-FCH and F-CPCCH, unique Long Code Mask about wireless device, about the Forward Power Control Subchannel of distributing to wireless device of F-CPCCH, or the like.Unique Long Code Mask of each wireless device (for example, based on unique sequence number of wireless device) in a predefined manner calculates, and perhaps can be distributed by the base station.
The transmitting power of F-FCH, F-DCCH and F-CPCCH can be conditioned, thereby realizes good performance for all wireless devices that receive multicasts service.Because F-FCH is sent to all wireless devices, the transmitting power of F-FCH is regulated like this, even make channel condition (for example, the maximum of path loss and and the energy per bit that needs to overall noise and interference ratio (Eb/Nt)) the poorest wireless device also can receive F-FCH reliably.Like this, the transmitting power of F-FCH also can be regulated jointly by all wireless devices.Signaling and RL PC bit utilize F-DCCH and F-CPCCH to be sent to each wireless device respectively.Can regulate the transmitting power of F-DCCH and F-CPCCH for each wireless device, make signaling and RL PC bit to be received by wireless device reliably.
Can utilize F-FCH to send, so that make the power control of F-FCH more convenient with reference to PC bit (perhaps abbreviating reference bits as).Wireless device can be estimated the received signal quality of F-FCH based on reference PC bit and other FL conditions, is that F-FCH generates FL PC bit then in view of the above.
Fig. 3 has shown on F-FCH the transmission to reference PC bit.F-FCH can be configured to carry Forward Power Control Subchannel.If F-FCH is used as the dedicated channel that data is sent to particular wireless device of unicast services, Forward Power Control Subchannel transmits the RL PC bit of the transmitting power be used to regulate this wireless device so.Yet if F-FCH is used as the shared channel of multicast service, the single Forward Power Control Subchannel on the F-FCH can not transmit RL PC bit for all wireless devices that receive the multicast service usually so.In order so to do, to need (1) to reduce the feedback rates of RL PC, this has reduced the validity of RL PC, (2) to the overpunch (puncturing) of F-FCH, so just reduced forward error correction (FEC) code gain of F-FCH, so that hold additional RL PC bit, or (3) preceding two all comprise.These RL PC bits that are used for wireless device can change into and utilize F-CPCCH to send.The PC bit of the Forward Power Control Subchannel of F-FCH can be set as given value (for example, all are " 1s ") and be used as the bit with reference to PC.
As shown in Figure 3, the per 20 milliseconds frame on the F-FCH can be divided into 16 power control groups, and these power control groups are given with from 0 to 15 sequence number.Each power control group has 1.25 milliseconds duration and transmits one with reference to the PC bit.The reference PC bit of each power control group is perforated (puncture), and replaces the modulation symbol that utilizes the F-FCH in that power control group to send of some.The position of the reference PC bit of each power control group is pseudorandom, and is determined by the Public Long Code Mask of F-FCH.Send with such power level with reference to the PC bit, the feasible transmit power level of the multi-case data of F-FCH transmission of utilizing has constant offset.Like this, as described below, just can be used for the forward link power control of F-FCH with reference to the PC bit.
Fig. 4 has shown that each receives the reverse chain channel of the wireless device of multicast service.Reverse chain channel comprises Reverse Fundamental Channel (R-FCH) and Reverse Pilot Channel (R-PICH).Also can use R-DCCH to replace R-FCH, perhaps also use R-DCCH except R-FCH.Wireless device uses R-FCH and/or R-DCCH that data and signaling are sent to this system.Can be different for R-FCH with the R-DCCH transmission characteristic.For example, R-FCH can be sent out in each frame but be sent out with the speed that changes, and is sent out if R-DCCH can or can not be sent out in any given frame then can sends with fixing (for example, complete) speed.For brevity, described below is R-FCH, although the major part of this description also can be applied to R-DCCH.This wireless device utilizes R-PICH to come to send pilot tone on reverse link, and utilizes R-PICH to send to be used to the FLPC bit of the transmitting power of regulating forward link channel.
This R-FCH can utilize one or more frame sizes (for example, 20 milliseconds and/or 5 milliseconds) to transmit data.This R-FCH can transmit data with the data rate that changes.This R-FCH can support gating transmission (gated transmission), thus data by the time in each frame in 8 of 16 power control groups 50% in transmission.R-FCH can also support discontinuous transmission, makes that R-FCH is movable only when having data to send, otherwise is exactly inactive.
For the multicast service, R-PICH also can transmit the reverse power control subchannel multiplexed with reverse-link pilot frequency.Per 20 milliseconds segmentation on the R-PICH is divided into 16 power control groups, and each power control group further is divided into quarter (quater).Reverse-link pilot frequency sends in the preceding three equal parts of each power control group.FL PC bit sends in the quarter of each power control group.R-PICH can be in the mode similar to R-FCH by gating.R-FCH and R-PICH can be chosen to disconnection (gated off) simultaneously, and this just allows wireless device to turn off its power amplifier, so that do not transmitting time province's battery energy.
Keep effective reverse link by the wireless device that receives the multicast service for each and connect, the position of wireless device can be determined, and can dynamically customize for wireless device about the covering of multicast service.Given base station can be based on the reported position of the wireless device that receives the multicast service, and the wireless device of asking this service, begins and finish the multicast service.Reverse link connects the power Control and Feedback of the transmitting power also be provided for regulating F-FCH, F-DCCH, F-SCH (if being transmitted) and F-CPCCH.
Connect can be owing to difference former thereby splitly fall (or termination) for the reverse link of the wireless device of given reception multicast service.For example, if wireless device never utilizes R-FCH to send signaling in predetermined amount of time or utilize R-PICH to send FL PC bit, its reverse link connects and can be dismantled so.As another example, if receive the multicast service wireless device outnumber predetermined number, control can be under an embargo to the power of F-FCH so, and the reverse link of each wireless device connects and can be dismantled, to preserve the reverse link resources and the energy content of battery at wireless device place.The reverse link of wireless device connects and can be dismantled in one or more stages.For example, wireless device can to gated mode, be transformed into idle pulley from the routine operation mode switch then after second time period after very first time section.First and/or second time period can be pre-define or can determine good and be sent to wireless device by system.In gated mode, wireless device can send FL PC bit with the speed that reduces (for example, 400 or 200bps), can also receive RL PC bit with the speed that reduces.In idle pulley, wireless device can be forbidden the transmission on R-PICH and R-FCH, and can use Reverse Access Channel (R-ACH) or Reverse Enhanced Access Channel (R-EACH) to send signaling on the reverse link.
A.
Forward link power control
Can be the control of multicast service execution forward link power in every way.In one embodiment, the transmitting power of F-FCH is united adjusting by the wireless device that all receive the multicast service.Joint Power control to F-FCH can guarantee that all wireless devices can receive this F-FCH reliably.In one embodiment, the transmitting power of the F-DCCH of each wireless device and F-CPCCH is regulated by corresponding wireless device.Independent power control to F-DCCH and F-CPCCH can guarantee that each wireless device can receive its signaling and RL PC bit reliably, makes the transmitting power of consumption as far as possible little simultaneously.Similar with F-FCH, F-DCCH and F-CPCCH also can be carried out joint Power control.Yet in any preset time, these channels are used for the particular wireless device of addressing individually in time-multiplexed mode, therefore need not to provide that constantly as the particular wireless device of target required more than power.In addition, by that group wireless device that receives the multicast service F-DCCH and F-CPCCH being carried out joint Power control may cause, and the transmitting power of these forward link channels is set to higher level by the wireless device of one or several bad channel conditions.
Fig. 5 A has shown the reverse power control subchannel on the R-PICH has been divided into the main reverse power control subchannel (be also referred to as son stream (substream) 1) of 400bps and the less important reverse power control subchannel of 400bps (be also referred to as son and flow 2).It should be noted that Fig. 5 A only illustrates with Fig. 5 B these PC bit groupings are become this two subchannels, and does not show the actual duration of these bits.Reverse power control subchannel on the R-PICH has the speed of 800bps.For the FPC_MODE=' 001 ' among the IS-2000, main reverse power control subchannel transmits FL PC bit in eight power control groups of band even number sequence number, and less important reverse power control subchannel transmits FL PC bit in eight power control groups of band odd indexed.
When Fig. 5 B has shown FPC_MODE=' 010 ' in IS-2000, reverse power control subchannel is divided into the division of main reverse power control subchannel and the less important reverse power control subchannel of 600bps of 200bps.Main reverse power control subchannel transmits the PC bit in four power control groups, and less important reverse power control subchannel transmits FL PC bit in 12 power control groups.
Less important reverse power control subchannel can transmit the FL PC bit that is used for F-FCH, and can with for example 600 or 400bps be sent out.Main reverse power control subchannel can transmit and be used for the two FL PC bit of F-DCCH and F-CPCCH, and can with for example 600 or the speed of 400bps be sent out.Optionally, main reverse power control subchannel can transmit the FL PC bit that is used for F-FCH, and reverse power control subchannel can transmit the FL PC bit that is used for F-DCCH and F-CPCCH.Be used for the FL PC bit of F-FCH and F-DCCH/F-CPCCH, can send with other bit rate.A kind of mode-definition can be become be used to indicate main and less important reverse power control subchannel to be respectively applied for F-FCH and F-DCCH.
Wireless device can comprise that the power control mechanism of inner loop and outer loop carries out the power control of F-FCH by use.For inner loop, the reference PC bit on the Forward Power Control Subchannel of wireless device reception F-FCH, and estimate each received signal quality with reference to the PC bit.Received signal quality can quantize noise and ratio (Eb/Nt) or other quantity of disturbing summation with the energy of every bit.Wireless device can be estimated to obtain more reliable estimation for a plurality of received signal qualities with reference to the PC bit in filtering.Then, wireless device will about current power control group by filtering or do not estimated to compare with signal quality threshold by the received signal quality of filtering, this signal quality threshold is also referred to as the F-FCH set point.If the signal quality that receives estimates to be lower than the F-FCH set point then wireless device can be arranged to ' 0 ' with the FL PC bit that is used for the F-FCH of current power control group, otherwise is arranged to ' 1 '.The signal quality that ' 0 ' value representation receives is not enough, and request increases the transmitting power of F-FCH.More than the signal quality that ' 1 ' value representation receives is abundant, and request reduces the transmitting power of F-FCH.
For outer loop, wireless device receives F-FCH and goes up the multi-case data that sends, and the multi-case data that receives of each frame is decoded, and determines that each received frame is correctly decoded (good) or by decoded in error (being wiped free of).Wireless device can reduce the F-FCH set point with little minimizing step-length (small down step) for each good frame, and is that each erase frame increases the F-FCH set point with big increase step-length (large up step).The step sizes that reduces and increase is selected to the performance of the aspiration level that can realize F-FCH usually, and this step sizes can (for example, 1%FER) be quantized by target frame erasure rate.
The F-FCH set point also can be fixed, and circulates for the F-FCH disable external in this case.The F-FCH set point also can be restricted to given minimum F-FCH set point or be higher than this given minimum F-FCH set point.Minimum F-FCH set point can be configured to, and can guarantee can not take place when wireless device moves to the edge of coverage the unnecessary level of wiping.Initial value, minimum value and/or maximum can be specified for the F-FCH set point in the base station, and these values are sent to wireless device.
Each base station receives the FL PC bit that is used for F-FCH from all wireless devices that receives the multicast service from the base station.Because F-FCH is sent to all wireless devices, the transmitting power that F-FCH can be regulated based on the FL PC bit that receives from all wireless devices in all base stations.For each power control group, the base station determines that the FL PC bit that receives from each wireless device is ' 0 ' or ' 1 '.The base station is in conjunction with the detected FL PC bit of all wireless devices, to obtain the PC decision of power control group then.For example, if arbitrarily the detected FL PC bit of wireless device is ' 0 ', then the base station can use the increase pattern or (OR-of-the-UP) rule and the PC decision is arranged to ' 0 ' (for higher transmitting power); And if the detected FL PC bit of all wireless devices is ' 1 ', then ' 1 ' (in order to reduce transmitting power) is arranged in the PC decision.
When the number of the wireless device that receives the multicast service increased, the benefit that the power of F-FCH is controlled reduced.This is because Several Factors.The first, because the more big figure of wireless device, at least one wireless device needs the possibility of high transmit power level (for example, being positioned at the edge and the bad channel conditions of coverage) to increase.Subsequently, because more a plurality of wireless devices, the transmitting power of F-FCH more may be configured to higher power level.The second, when the number of wireless device increased, the possibility that correctly receives FL PC bit from wireless device reduced.With increase pattern or (OR-of-the-UP) rule, with any FL PC bit be used as ' 0 ' or the error detection of ' increase ' cause the transmitting power of F-FCH to be increased.The 3rd, along with more a plurality of wireless devices, more reverse chain-circuit capacity is consumed and is used for transmitting the FLPC bit that is used for F-FCH.Can come selectively F-FCH to be carried out power control based on one or more such standards of number like this such as the wireless device that for example receives the multicast service.For example, control can be enabled if the number of wireless device is less than predetermined number then to F-FCH power, and is otherwise just disabled.
The transmitting power that is used for the F-DCCH of each wireless device can be controlled based on power and regulate, as described as follows.The transmitting power that is used for the F-CPCCH of each wireless device can be set up based on the transmitting power of the F-DCCH of this wireless device.For example, for given wireless device, difference between the transmitting power of F-DCCH and the transmitting power of F-CPCCH or increment (delta) can be provided with and be sent to wireless device by the base station.The transmitting power of F-DCCH and F-CPCCH can be provided with in one way, thereby solves the difference of the data rate of F-DCCH and F-CPCCH.
Wireless device can use another set of inner loop and outer loop to carry out the power of F-DCCH is controlled.For inner loop, wireless device is received in the F-CPCCH that is used for wireless device and goes up the RL PC bit that sends, and estimates the received signal quality of each RLPC bit.Wireless device can be estimated for a plurality of RL PC bit filtering received signal qualities, to obtain more reliable estimation.Wireless device can based on RL PC bit by filtering or do not estimated the received signal quality of F-DCCH by the received signal quality of filtering and power delta.Like this, the received signal quality of F-CPCCH just is used as the representative (proxy) of the received signal quality of F-DCCH.Then, wireless device is estimated that the received signal quality of the F-DCCH of current power control group compare with the F-DCCH set point.Then, if received signal quality estimates to be lower than the F-DCCH set point, then the wireless device FL PC bit that will be used for the F-DCCH of current power control group sets ' 0 ' for, otherwise sets this bit for ' 1 '.The received signal quality of ' 0 ' value representation F-DCCH is good not enough, and request increases the transmitting power of F-DCCH and F-CPCCH.The received signal quality of ' 1 ' value representation F-DCCH exceeds enough good, and request reduces the transmitting power of F-DCCH and F-CPCCH.
For outer loop, wireless device receives and utilizes F-DCCH to send to specific user's signaling of wireless device, with the signaling decoding that sends in every frame, and determines that each frame is correctly decoded still decoded in error.Wireless device can reduce the F-DCCH set point with the little step-length that reduces for each good frame, and is that each erase frame improves the F-DCCH set point with big increase step-length.The step sizes that increases and reduce is selected to the performance level (for example, the FER of %1) that can realize expectation for F-DCCH.The F-DCCH set point can be limited in the scope of a plurality of values.
Wireless device also can otherwise be carried out being used for the F-FCH of multicast service, the power control of F-DCCH and F-CPCCH.For example, main and less important reverse power control subchannel can be respectively applied for the feedback that transmits 400bps and 50bps.The feedback of 50bps can informing base station, and whether wireless device has correctly received the frame of the 20ms on the F-FCH.The feedback of 400bps can be used for regulating continuously the transmit power level of F-CPCCH and F-DCCH.
B.
Dynamic coverage and soft handover
Each base station can provide communication coverage for geographic area separately.The overlay area of adjacent base station is overlapped usually, and wireless device can switch to another base station from a base station when wireless device is mobile on every side in system to allow.
System can provide dynamic coverage for the multicast service.Each wireless device is attempted to receive the multicast service from base station that may be best.Near the pilot tone of the base station of wireless device can periodically searching for, and measure the signal strength signal intensity of each pilot tone that this equipment finds.Wireless device can be kept " activity " collection, this active set comprise the current multicast service that is just receiving of wireless device from base station whole.Add threshold value if the pilot signal strength of the measurement of new base station surpasses, then wireless device can be attempted this new base station is added in the active set.In order to add this new base station, wireless device can utilize R-FCH that signaling (for example, Pilot Strength Measurement Message) is sent to current base station.Current base station can utilize F-DCCH that signaling (for example, channel assignment message, handover guide message etc.) is sent to wireless device.This signaling comprises by wireless device and one group of new full detail that base station communication is required.If for the pilot signal strength of certain base station measurement drops on below the drop threshold, then wireless device can discard this base station from active set.Can keep the active set of multicast service in order to the mode identical with other service of system support.
Usually, wireless device is that different active sets is kept in the service that every kind of wireless device is receiving.For example, wireless device can be kept an active set for the multicast service, and is that another active set is kept in another kind of service (for example, being voice and packet data call).The active set of keeping for the multicast service has below been described.
This group wireless device that receives the multicast service can be positioned at same sub-district or be positioned at different districts.Each wireless device in this group can be kept active set separately, and it comprises wireless device is just receiving the multicast service from it all base stations.For the multicast service, each wireless device can have identical active set or different overlapping active sets.If at least one base station is public for the active set of a plurality of equipment in the wireless device that receives the multicast service, then active set is overlapping.For each wireless device, each base station in the active set of this equipment utilizes F-FCH with public multi-case data, utilizes F-DCCH with specific user's signaling, and utilizes F-CPCCH with RL PC bit, sends to wireless device.
If the active set of wireless device comprises a plurality of one or more sector of base station that belong to, then this wireless device is in the soft handover of multicast service.When in soft handover, the different F-FCH that use via these sectors a plurality of sectors are that the multicast service transmits identical multi-case data.Wireless device can receive also in conjunction with the multi-case data from all sectors in the active set, to obtain improved performance.A plurality of sectors also can send to wireless device with identical specific user's instruction for the different F-DCCH that the multicast service is used via these sectors.A plurality of sectors can the cooperation transmission specific user be instructed, and make every message be sent to all sectors simultaneously.This just allows wireless device and can receive in order to improve performance and in conjunction with the message from all sectors.Transmitting power balance/calibration can (for example, periodically) be carried out, so that the shared forward link channel transmitting power is tended to public horizontal adjustment in these a plurality of base stations.The balance transmitting power is used in sector to all emission identical contents, can strengthen diversity and improve link efficiency.
When having a plurality of base station in the active set at soft handover, independent Forward Power Control Subchannel can be launched in the base station in each active set, thinks the transmitting power of reverse link adjusting wireless device.Each base station is measured as wireless device based on received signal quality and generates RL PC bit, and this received signal quality measurement is that wireless device is made by the base station.For each power control group, wireless device can detect the RL PC bit that all base stations from active set receive, and can regulate its transmitting power in view of the above.That wireless device can be used the minimizing pattern or (OR-of-the-DOWN) rule, and when if the detected arbitrarily RL PC bit of current power control group is ' 1 ' (will reduce transmitting power), reduce its transmitting power, and if when all detected RL PC bits of current power control group are ' 0 ' (increase transmitting power) increase its transmitting power.
The shared forward link channel (F-FCH, F-DCCH, and F-CPCCH) of multicast service can be supported to be used in all base stations in the system.In this case, wireless device can be carried out soft handover in normal mode by using traditional soft handoff procedure.Wireless device is used for all relevant parameters (for example, Public Long Code Mask, walsh function or the like) of shared forward link channel by each the base station notice in the active set.
This system can have some base stations of supporting the shared forward link channel and " legacy " base station that some do not support the shared forward link channel.The legacy base station can use special-purpose F-FCH to support the multicast service of wireless device.Public Long Code Mask or some other Long Code Masks that the legacy base station can use unique Long Code Mask of this wireless device, the F-FCH that shared by another base station to use to transmit multi-case data by special-purpose F-FCH.This legacy base station can also utilize the Forward Power Control Subchannel of special-purpose F-FCH to transmit the RL PC bit (rather than with reference to PC bit) of wireless device.This base station can utilize special-purpose F-DCCH that specific user's signaling is sent to wireless device.
Wireless device can be carried out from the soft handover or the direct-cut operation of base station, first base station to the second (legacy), and wherein the shared forward link channel is supported in first base station, and the shared forward link channel is not supported in second base station.Can be by the dedicated forward link channel allocation being carried out soft handover to wireless device by two base stations.For example, wireless device can utilize at first and share F-FCH (for example, have 17 walsh function) and receive multi-case data from first base station.For soft handover, wireless device (for example can continue to utilize the first special-purpose F-FCH, have 19 walsh function) receive multi-case data from first base station, and utilize the second special-purpose F-FCH (for example, have 20 walsh function) to receive multi-case data from second base station.Can use traditional hard handoff procedure to carry out the direct-cut operation of second base station then by wireless device at first being moved to the dedicated forward link channel, carry out direct-cut operation by first base station.If wireless device moves back to the overlay area of first base station thereafter, wireless device can be carried out the switching of first base station so, and utilizes the shared forward link channel to receive the multicast service.
For soft handover, wireless device can also receive the multicast service via sharing with special-purpose F-FCH from a plurality of base stations simultaneously.Wireless device can become the shared and special-purpose F-FCH reception of utilization multi-case data from only utilizing shared F-FCH to receive multi-case data.In this case, can set the Initial Trans of special-purpose F-FCH (being added) according to the transmitting power of sharing F-FCH.Wireless device can also become to utilize and shares F-FCH and special-purpose F-FCH the two receives multi-case data from only utilizing special-purpose F-FCH to receive multi-case data.In this case, the Initial Trans of sharing F-FCH (just being added) can be configured to share the higher person in the transmitting power of the transmitting power of F-FCH (it has been sent to other wireless device) and special-purpose F-FCH.
If wireless device receiving special-purpose F-FCH and shared F-FCH the two, (for example, from the shared F-FCH of a base station with from the special-purpose F-FCH of another base station) so wireless device will receive spontaneous emission to share the Forward Power Control Subchannel on the F-CPCCH of base station of F-FCH and come another Forward Power Control Subchannel on the special-purpose F-FCH of base station of the special-purpose F-FCH of spontaneous emission.The transmitting power that can regulate these Forward Power Control Subchannels based on the FL PC bit that wireless device utilizes less important power control sub-channel to send.These FLPC bits can be obtained from (1) based on sharing reference PC bit that sends on the F-FCH and the RL PC bit that sends on special-purpose F-FCH, and/or (2) the increase pattern is used in the measurement of two base stations or (OR-of-the-UP) rule, think that these base stations derive FL PC bit.The transmitting power of the Forward Power Control Subchannel of special-purpose F-FCH can also be conditioned with the transmitting power of special-purpose F-FCH.
Wireless device is used the Rake receiver usually and is handled a plurality of sample of signal (signal instance) that receive from one or more base stations.Each sample of signal with enough energy is assigned to the restitution element (or " rake refers to ") of Rake receiver and is handled by this restitution element, to obtain sign estimation.Then, be combined from all sign estimation of distributing rake to refer to.Further utilize long code with the composite symbol descrambling, to obtain demodulation symbol, then with this demodulation symbol decoding.If symbol is estimated at first to cross rake and is referred to be combined, and then by descrambling, its so all transmission will just should be used identical Long Code Mask by the base station of wireless device combination.
Identical Long Code Mask is normally used for the F-FCH and the F-DCCH of unicast services.For the multicast service, each wireless device is known the Public Long Code Mask that is used for F-FCH and is used for unique Long Code Mask of the signaling on the F-DCCH.Then, wireless device can be respectively carries out descrambling based on public and unique Long Code Mask with the composite symbol of F-FCH and F-DCCH.For the wireless device in the soft handover, all base stations in the active set of this equipment are used identical Long Code Mask usually.This just allows wireless device can make up sign estimation for all these base stations.Like this, just can carry out soft handover and direct-cut operation in the mode that the combination and the descrambling of wireless device execution are taken into account.
Fig. 6 shown by the base station carry out so that the flow chart about the processing 600 of the multicast service of multicast scheme 1 to be provided.This base station utilizes Public Long Code Mask to transmit multi-case data on F-FCH and with reference to PC bit (square frame 612).This base station utilizes F-DCCH to wireless device emission specific user signaling, and wherein this F-DCCH uses for the unique Long Code Mask of these wireless devices (square frame 614).This base station also utilizes F-CPCCH to transmit the RLPC bit (square frame 616) that is used for wireless device in the bit locations by the Public Long Code Mask indication.The base station utilizes pilot tone and the FLPC bit (square frame 618) of R-PICH reception from each wireless device, and when needed, utilizes R-FCH to receive data/signaling (square frame 620) from each wireless device.The transmitting power (square frame 622) that the FL PC bit that the base station receives based on the main power control sub-channel that is used to from all wireless devices is regulated F-FCH.The transmitting power (square frame 624) that the FL PC bit that the base station receives based on the less important power control sub-channel that is used to from wireless device to regulate for each wireless device F-DCCH and F-CPCCH.
Fig. 7 has shown the flow chart of being carried out by given wireless device that is used to receive the processing 700 of serving about the multicast of multicast scheme 1.The wireless device utilization uses the F-FCH of Public Long Code Mask to receive multi-case data and with reference to PC bit (square frame 712).Wireless device utilizes F-DCCH to receive its signaling, and it is unique Long Code Mask (square frame 714) that this F-DCCH uses for this wireless device.This wireless device also utilizes F-CPCCH to receive its RL PC bit (square frame 716) in the bit locations by the Public Long Code Mask indication.This wireless device generates the FL PC bit (square frame 718) that is used for F-FCH based on the reference PC bit that utilizes F-FCH to receive.This wireless device also generates the FL PC bit (square frame 720) that is used for F-DCCH and F-CPCCH based on the RL PC bit that utilizes F-CPCCH to send to wireless device.The main power control sub-channel of wireless device utilization transmits and is used for the FL PC bit of F-FCH, and utilizes the less important power control sub-channel of R-PICH to transmit the FL PC bit (square frame 722) that is used for F-DCCH and F-CPCCH.Wireless device can also utilize data/signaling (square frame 724) that R-FCH transmits to be needed.
2.
Multicast scheme 2:F-FCH ﹠amp; F-CPCCH
For forward link power control, the reverse power control subchannel on the R-PICH can be divided into main and less important reverse power control subchannel (for example, 400bps and 400bps), and it can be used to control the transmitting power of F-FCH and F-CPCCH.The base station can receive the main and less important reverse power control subchannel that receives the wireless device of multicast service from all.The base station can be to receiving that FL PC bit is used the increase pattern on the main reverse power control subchannel from wireless device or rule, goes up and send the transmitting power that multi-case data uses to be adjusted in F-FCH.The base station can be regulated and utilize F-FCH that specific user's signaling is sent to the employed transmitting power of each wireless device based on utilizing less important power control sub-channel from the FL PC bit that wireless device receives.
For soft handover, wireless device can receive the multicast service from a plurality of base stations simultaneously.These base stations can send to wireless device with multi-case data via shared F-FCH, and can send the RL PC bit that is used for wireless device via F-CPCCH.Wireless device can be measured the RL PC bit that utilizes F-CPCCH to receive from a plurality of base stations, determine which base station has enough received signal intensity at the wireless device place, the measure R L PC bit that is based upon all base stations that fully receive generates FL PC bit, and utilizes less important power control sub-channel that FL PC bit is sent to the base station.Then, the transmitting power of wireless device adjusting for signaling on the F-FCH and the RL PC bit on the F-CPCCH come to be based on utilizing less important power control sub-channel from the FL PC bit that wireless device receives in each base station.Like this, just can independently control for the F-FCH of different base station and the transmitting power of F-CPCCH by each base station.
3.
Multicast scheme 3:F-FCH﹠amp; Special-purpose F-DCCH
Control for forward link power, reverse power control subchannel on the R-PICH (for example can be divided into main and less important reverse power control subchannel, 400bps and 400bps), it can be respectively applied for the transmitting power that F-FCH and special-purpose F-DCCH are shared in control.The base station can utilize main reverse power control subchannel to receive FL PC bit from all wireless devices, and to these FL PC bits application increase patterns or regular, thereby regulate the transmitting power of sharing F-FCH.The base station can utilize less important power control sub-channel to receive FL PC bit from each wireless device, and the transmitting power that can regulate special-purpose F-DCCH for wireless device.The transmitting power of RL PC bit can link together with the transmitting power of signaling on the special-purpose F-DCCH.Each wireless device can estimate to utilize the received signal quality of the RL PC bit that special-purpose F-DCCH receives, and this received signal quality is compared with the F-DCCH set point, and generates the FLPC bit that is used for special-purpose F-DCCH in view of the above.Can regulate the F-DCCH set point based on the frame erasing on the special-purpose F-DCCH.Because signaling can send on special-purpose F-DCCH off and on, so the time of cost prolongation is that special-purpose F-DCCH regulates set point downwards based on good frame possibly.Like this, the set point of special-purpose F-DCCH can be fixed value or can be limited in the scope of certain value.
4.
Multicast scheme 4: the F-SCH of no reverse link
5.
Multicast scheme 5:F-FCH, F-PDCH and F-CPCCH
Each wireless device can utilize R-CQICH and/or R-ACKCH to transmit FL PC bit.Article two, reverse power control subchannel can be used for the transmitting power that wireless device is regulated F-FCH and F-PDCH/F-CPCCH.Wireless device can be measured the reference PC bit that sends on F-FCH, be that F-FCH is provided with FL PC bit based on this measured value in view of the above, and utilizes main reverse power control subchannel to send FL PC bit.The set point of F-FCH can be fixed, and perhaps can regulate based on the frame erasing of F-FCH.The transmitting power of F-PDCH can be fixed, and perhaps can regulate based on the FL PC bit on the less important reverse power control subchannel.
Five kinds of exemplary multicast schemes that the multicast service is provided by the various combinations of using forward direction and reverse chain channel have more than been described.Can also and use the various combination of forward direction and reverse chain channel that the multicast service otherwise is provided based on other multicast scheme.
Wireless device can receive the multicast service together when receiving private calls (for example, audio call).Wireless device can distribute special-purpose F-FCH for private calls.Specific user's instruction for private calls can send on special-purpose F-DCCH, the shared F-DCCH that is used for the multicast service or other forward link channel.Wireless device can also be F-SCH higher data rate allocation special use or that share.Reverse power control subchannel on the R-PICH can be divided into three or more subchannel, will carry out power control respectively by wireless device for a subchannel of every forward link channel.
6.
System
Fig. 8 has shown the block diagram that multicast serving base station 110 is provided and receives the wireless device 120 of multicast service.For forward link, 110 places in the base station, FL emission (TX) data processor 810 (for example receives various types of data, multi-case data, signaling and RLPC bit), handle (for example, encode, interweave, modulation, channelizing and scrambling) at forward link channel (for example, F-FCH, F-DCCH and F-CPCCH) go up the reception data of transmission, and the stream of data chips is provided.Transmitter unit (TMTR) 812 is regulated (for example, being transformed into simulation, amplification, filtering and frequency up-converted) data chips to generate forward link signal.Forward link signal is sent out by duplexer (D) and via antenna 816.At wireless device 120 places, forward link signal is received by antenna 852, by duplexer 854, and is provided for receiving element (RCVR) 856.The signal that receiving element 856 adjustings (for example, filtering, amplification, frequency downconverted and digitlization) receive is to obtain data sampling.FL receives (RX) data processor 860 and handles (for example, separating channelizing, data demodulates, descrambling, deinterleaving and decoding) this data sampling to obtain the decoded data about wireless device 120.Decoded data are included in multi-case data that F-FCH go up to send and for the specific user who the sends instruction of wireless device 120 on F-DCCH.FL RX data processor 860 can realize handling the Rake receiver of a plurality of sample of signal,
For reverse link, at wireless device 120 places, RL TX data processor 890 receives and handles various types of data (for example, FL PC bit and reverse link signaling) of the transmission on the reverse chain channel (for example, R-PICH and R-FCH).Transmitter unit 892 is regulated the stream from the data chips of RL TX data processor 890 then, and to generate reverse link signal, this reverse link signal is launched by duplexer 854 and via antenna 852.110 places in the base station, reverse link signal is received by antenna 816, by duplexer 814, and is provided for receiving element 842.Receiving element 842 is regulated the signal that receives and sample streams is provided.RL RX data processor 844 is handled this sample streams and is recovered just received by each the FL PC bit and the signaling of the wireless device transmission of multicast service.
The operation of the various unit in controller 830 and 880 difference direct base station 110 and the wireless device 120.Controller 830 and 880 can be carried out the various functions about multicast service, power control, soft handover or the like.Memory cell 832 and 882 is storage control 830 and 880 data and the program codes that use respectively.The processing that base station 110 and wireless device 120 about multicast scheme 1 carry out is below described.
Fig. 9 has shown the block diagram for the data processor 810a of F-FCH.Data processor 810a is the part of the FL TX data processor 810 among Fig. 8.In data processor 810a, 920 pairs of multi-case datas of encoder/interleaver are encoded and are interweaved, and further utilize public long code that multi-case data is carried out scrambling, and utilize the gain of the data division of F-FCH that multi-case data is carried out ratio by channel gain unit 924 and determine by scrambler 922.Long code maker 930 is that scrambler 922 generates public long code based on the Public Long Code Mask of F-FCH.Channel gain unit 934 utilizations are carried out ratio with reference to the gain of PC bit to reference PC bit and are determined.Multi-case data is relevant with the bit rate of this multi-case data and PC bit with the gain with reference to the PC bit, and is determined by this bit rate.Multiplexer (Mux) 940 receiving elements 924 and 934 output also will be inserted bit locations by 932 indications of PC bit position extractor of the multi-case data that (puncture in) determine through ratio in the reference PC bit that ratio is determined.IQ demultiplexer (Demux) 942 resolves into homophase (I) stream and quadrature (Q) stream with the output multichannel of multiplexer 940.Walsh covers the walsh function W that (cover) unit 944 utilizes F-FCH
F-fchI and Q stream are covered.
Figure 10 has shown the block diagram of the data processor 810b that is used for F-DCCH.Data processor 810b also is the part of FL TX data processor 810 among Fig. 8.In data processor 810b, multiplexer 1010 receives signaling for the user from a to s who receives the multicast service, and provides instruction in the moment based on the TDM_Ctrl signal for a user.Signaling for selected user x, handle by encoder/interleaver 1020, and it is carried out scrambling by the long code of scrambler 1022 usefulness user x, the gain that is utilized user x by channel gain unit 1024 is carried out ratio to it and is determined, and its multichannel is resolved into I and Q, and utilize the walsh function W of F-DCCH by Walsh capping unit 1044 by IQ demultiplexer 1042
F-dcchCover, wherein x ∈ { a ... s}.Long code maker 1030 generates long code for user x based on the unique Long Code Mask to user x.Carry out scrambling for each user signaling by utilizing long code, and carry out ratio by utilization for that user's gain and determine.
Figure 11 has shown the block diagram for the data processor 810c of F-CPCCH.Data processor 810c also is the part of the FL TX data processor 810 among Fig. 8.In data processor 810c, multiplexer 1110a receives the RL PC bit of user a to m, and multiplexer 1110b receives the RL PC bit of user n to s.Each multiplexer 1110 is mapped to the bit locations of being determined by relativity shift computing unit 1132 with its user's RL PC bit.Channel gain unit 1112a and 1112b receive RL PC bit from multiplexer 1110a and 1110b respectively.The gain that each channel gain unit 1112 is utilized that user is carried out ratio to each user's RL PC bit and is determined.The walsh function W that Walsh capping unit 1144 utilizes for F-CPCCH
F-cpcchCovering is from the RL PC bit of determining through ratio of unit 1112a and 1112b.Long code maker 1130 generates public long code based on Public Long Code Mask.Unit 1132 is that RL PC bit is determined the bit position based on this public long code.
Figure 12 has shown the block diagram for the data processor 890a of the R-PICH of user x and R-FCH.Data processor 890a is the part of RL TX data processor 890 among Fig. 8.In the data processor 1202 that is used for R-PICH, multiplexer 1210 receives pilot data and the FL PC bit that is used for main and less important reverse power control subchannel.As shown in Figure 4 and Figure 5, multiplexer 1210 is multiplexed into pilot data and FLPC bit on the R-PICH.Walsh capping unit 1212 is used for the walsh function W of R-PICH
R-pichCover the output of multiplexer 1210.In the data processor 1204 that is used for R-FCH, reverse link data and signaling are handled by encoder/interleaver 1220, and are utilized the walsh function W of R-FCH by Walsh capping unit 1222
R-fchCover, and carry out ratio by the gain that channel gain unit 1224 is used for user x and determine.Long code maker 1230 generates the long code of user x based on unique Long Code Mask of user x.PN maker 1232 generates PNI and PNQ sequence based on the long code and the public IPN and the QPN sequence that are used for all wireless devices of user x.Compound multiplexer 1242 multiplies each other the output of data processor 1202 and 1204 and PNI and PNQ sequence, and generates Iout and Qout stream of data chips, and this stream of data chips is launched unit 892 and is further processed.Transmission on R-PICH and/or the R-FCH can or be forbidden by gating (for example, to 1/2 or 1/4).
Dynamic shared forward link channel described herein can be used for various application, such as push-to-talk (PTT).Usually, dynamic shared forward link channel can be used for common service data are arbitrarily sent to any group wireless device.Dynamic shared forward link channel can or can jointly not carried out power control.
Be used on dynamic shared forward link channel transmitting and receive data ground technology and can pass through variety of way (for example, with hardware, software or the combination of the two) and realize.Realize that for hardware the processing unit that is used for transfer of data can be at one and a plurality of application-specific integrated circuit (ASIC)s (ASIC), digital signal processor (DSP), digital signal processing device (DSPD), programmable logic device (PLD), field programmable gate array (FPGA), processor, controller, microcontroller, microprocessor, other is designed to carry out in the electronic unit of function described herein or the above combination and realizes.The processing unit that is used for Data Receiving also can be realized in one or more ASIC, DSP or the like.
Realize that for software the processing that is used for data transmission and reception can utilize the module of carrying out function described herein (for example, step, function, or the like) to realize.Software code can be stored in the memory cell (for example, the memory cell 832 and 882 among Fig. 8), and is carried out by processor (for example, controller 830 and 880).Memory cell can perhaps can realize that in this case, it can be connected to processor communicatedly via various devices known in the art in the inner realization of processor in the outside of processor.
The title that comprises in the literary composition is used for reference and is used for helping some chapters and sections of location.These titles do not wish to limit the scope of notion described herein, and these notions also can be applied in other chapters and sections in the whole specification.
Above description to disclosed embodiment is used to enable those skilled in the art to make or use the present invention.For a person skilled in the art, will be very tangible to the modification of these embodiment, and the basic principle of definition herein can be applied among other embodiment, and can not break away from the spirit or scope of the present invention.Thereby the present invention is intended to the embodiment that is limited to show herein, but will meet and disclosed principle and the corresponding to maximum magnitude of novel features herein.
Claims (63)
1. method that data is sent to a plurality of wireless devices in wireless communication system comprises:
Via the shared data channel business datum is sent to described a plurality of wireless device;
Via the shared control channel that is used for described a plurality of wireless devices or via the Dedicated Control Channel that is used for described wireless device, specific user's signaling is sent in described a plurality of wireless device each, and wherein said business datum and described specific user's signaling are used for the multicast service; With
Utilize described shared data channel to transmit the reference power control bit, described reference power control bit has known value and is used to the signal quality estimation of the described business datum on the described shared data channel.
2. the method for claim 1 is characterized in that, further comprises:
Via the shared indicating channel that is used for described a plurality of wireless devices or via the described Dedicated Control Channel that is used for described wireless device, power control information is sent in described a plurality of wireless device each.
3. method as claimed in claim 2, it is characterized in that, described shared data channel is forward fundamental channel F-FCH, and described shared control channel is Forward Dedicated Control Channel F-DCCH, and described shared indicating channel is the Forward Common Power Control Channel F-CPCCH among the IS-2000.
4. method as claimed in claim 2 is characterized in that, described shared data channel is forward fundamental channel F-FCH, and described shared control channel also is F-FCH, and described shared indicating channel is the Forward Common Power Control Channel F-CPCCH among the IS-2000.
5. method as claimed in claim 2 is characterized in that, described shared data channel is forward fundamental channel F-FCH, and described Dedicated Control Channel is the Forward Dedicated Control Channel F-DCCH among the IS-2000.
6. method as claimed in claim 2 is characterized in that, described shared data channel is forward supplemental channel F-SCH, and described shared control channel is the Forward Common Control Channel F-CCCH among the IS-2000.
7. method as claimed in claim 2, it is characterized in that, described shared data channel is forward fundamental channel F-FCH, and described shared control channel is forward packet data channel F-PDCH, and described shared indicating channel is the Forward Common Power Control Channel F-CPCCH among the IS-2000.
8. the method for claim 1 is characterized in that, also comprises:
Keeping reverse link in described a plurality of wireless devices each connects.
9. method that data is sent to a plurality of wireless devices in wireless communication system comprises:
Via forward fundamental channel F-FCH business datum is sent to a plurality of wireless devices;
Via Forward Dedicated Control Channel F-DCCH specific user's signaling is sent in described a plurality of wireless device each; With
Utilize described F-FCH to transmit reference power control PC bit, the described signal quality that has given value and be used to the described business datum on the described F-FCH with reference to the PC bit is estimated.
10. method as claimed in claim 9 is characterized in that, utilizes F-DCCH to transmit specific user's signaling of described a plurality of wireless devices by using time division multiplexing tdm.
11. method as claimed in claim 9 is characterized in that, also comprises:
Utilize the long code of the Public Long Code Mask generation of using F-FCH, the business datum of F-FCH is carried out scrambling.
12. method as claimed in claim 9 is characterized in that, also comprises:
Utilize and use the long code that generates for the unique Long Code Mask of described wireless device, come described specific user's signaling of each wireless device is carried out scrambling.
13. method as claimed in claim 9 is characterized in that, also comprises:
Via Forward Common Power Control Channel F-CPCCH, reverse link RLPC information is sent in described a plurality of wireless device each.
14. method as claimed in claim 13, it is characterized in that, the independent Forward Power Control Subchannel that described wireless device is distributed in the described RL PC information utilization that is used for each wireless device sends, and wherein, a plurality of Forward Power Control Subchannels of described a plurality of wireless devices by time division multiplexing to described F-CPCCH.
15. method as claimed in claim 13 is characterized in that, also comprises:
Based on the long code of using Public Long Code Mask to generate, the described RLPC information multiplexing that will be used for described a plurality of wireless devices is to described F-CPCCH.
16. method as claimed in claim 9 is characterized in that, also comprises:
Receive the forward link FLPC bit that is used for F-FCH from described a plurality of wireless devices; With
Based on the FL PC bit that is used for described F-FCH that receives, the transmitting power of regulating described F-FCH.
17. method as claimed in claim 16 is characterized in that, the described FL PC bit that is used for described F-FCH is based on utilizing the described of described F-FCH transmission to generate with reference to the PC bit by each wireless device.
18. method as claimed in claim 16 is characterized in that, also comprises:
Based on the FL PC bit that in the time interval, receives from a plurality of wireless devices, and by use increase pattern or regular, for each time interval is determined the PC decision, and the transmitting power of wherein regulating described F-FCH based on described PC decision.
19. method as claimed in claim 16 is characterized in that, also comprises:
If the individual or more wireless device of predetermined number is utilizing described F-FCH to receive described business datum, then forbid adjusting to the transmitting power of F-FCH.
20. method as claimed in claim 9 is characterized in that, also comprises:
Each reception from described a plurality of wireless devices is used for the forward link FLPC bit of described F-DCCH; With
Based on the described FL PC bit that is used for described F-DCCH that receives from described wireless device, regulate and utilize described F-DCCH to send to the transmitting power of specific user's signaling of each wireless device.
21. method as claimed in claim 13 is characterized in that, also comprises:
From described a plurality of wireless devices each receives the forward link FLPC bit that is used for described F-DCCH; With
Based on the described FL PC bit that is used for described F-DCCH that receives from described wireless device, regulate and utilize described F-CPCCH to send to the transmitting power of the described RL PC bit of each wireless device.
22. method as claimed in claim 9 is characterized in that, when described wireless device was mobile on every side in described system, described business datum was sent to each in described a plurality of wireless device.
23. method as claimed in claim 9 is characterized in that, also comprises:
Receive pilot tone and forward link FLPC information via Reverse Pilot Channel R-PICH each from described a plurality of wireless devices.
24. method as claimed in claim 9 is characterized in that, also comprises:
Receive the reverse link signaling via Reverse Fundamental Channel R-FCH from wireless device.
25. the device that is used to transfer data to a plurality of wireless devices in the wireless communication system comprises:
First data processor, but its processing and utilizing forward fundamental channel F-FCH is transferred to the business datum of a plurality of wireless devices, but and the reference power control PC bit of processing and utilizing F-FCH transmission, described have given value with reference to the PC bit, and be used to the signal quality of the described business datum on the described F-FCH is estimated; With
Second data processor, but it is connected to each the specific user's signaling that is used for described a plurality of wireless devices of described first data processor and processing and utilizing Forward Dedicated Control Channel F-DCCH transmission.
26. device as claimed in claim 25 is characterized in that, also comprises:
The 3rd data processor, but each the reverse link RLPC information that is used for described a plurality of wireless devices of the transmission of its processing and utilizing Forward Common Power Control Channel F-CPCCH.
27. device as claimed in claim 25 is characterized in that, described first data processor can utilize the long code of the Public Long Code Mask generation that is used for F-FCH that the described business datum of described F-FCH is carried out scrambling.
28. device as claimed in claim 25 is characterized in that, described second data processor can utilize use to the long code that the unique Long Code Mask of described wireless device generates, and the described specific user's signaling that is used for each wireless device is carried out scrambling.
29. device as claimed in claim 25 is characterized in that, also comprises:
Controller, it can receive the forward link FLPC bit that be used for described F-FCH from described a plurality of wireless devices, and the transmitting power that can regulate described F-FCH based on the FL PC bit that is used for described F-FCH that receives.
30. device as claimed in claim 25 is characterized in that, also comprises:
Controller, it can be used for the forward link FLPC bit of described F-DCCH from each reception described a plurality of wireless devices, and can regulate and utilize described F-DCCH to send to the transmitting power of described specific user's signaling of each wireless device based on the described FL PC bit that is used for described F-DCCH that receives from described wireless device.
31. the device in the wireless communication system comprises:
Be used for business datum is sent to via forward fundamental channel F-FCH the unit of a plurality of wireless devices;
Be used for specific user's signaling is sent to via Forward Dedicated Control Channel F-DCCH each unit of described a plurality of wireless devices; With
Be used to utilize described F-FCH to transmit the device of reference power control PC bit, described have known value with reference to the PC bit, and be used to the signal quality of the described business datum on the described F-FCH is estimated.
32. device as claimed in claim 31 is characterized in that, also comprises:
Be used to the unit that utilizes long code that the described business datum of described F-FCH is carried out scrambling, wherein said long code is to use the Public Long Code Mask that is used for described F-FCH to generate.
33. device as claimed in claim 31 is characterized in that, also comprises:
Be used to the unit that utilizes long code that described specific user's signaling of each wireless device is carried out scrambling, wherein said long code is to use the unique Long Code Mask of described wireless device is generated.
34. device as claimed in claim 31 is characterized in that, also comprises:
Be used for receiving the unit of the forward link FLPC bit that is used for described F-FCH from described a plurality of wireless devices; With
Be used for regulating the unit of the transmitting power of described F-FCH based on the described FL PC bit that is used for described F-FCH that receives.
35. device as claimed in claim 31 is characterized in that, also comprises:
Be used for being used for the forward link FLPC bit of described F-DCCH from each reception of described a plurality of wireless devices; With
Be used for regulating and utilizing described F-DCCH to send to the transmitting power of described specific user's signaling of each wireless device based on receiving the described FL PC bit that is used for described F-DCCH from described wireless device.
36. a method that receives data in wireless communication system comprises:
Receive the business datum that sends to a plurality of wireless devices via the shared data channel;
Receive specific user's signaling via shared control channel or Dedicated Control Channel, wherein said business datum and described specific user's signaling are served about multicast; With
Utilize described shared data channel to receive the reference power control bit, described reference power control bit has known value, and is used to estimate the received signal quality of the described business datum on the described shared data channel.
37. method as claimed in claim 36 is characterized in that, also comprises:
Via shared indicating channel or the control information of Dedicated Control Channel received power; With
Regulate the transmitting power of the transmission that utilizes the reverse link transmission based on described power control information.
38. a method that receives data in wireless communication system at the wireless device place comprises:
Receive business datum via forward fundamental channel F-FCH;
Receive the specific user's signaling that is used for described wireless device via Forward Dedicated Control Channel F-DCCH; With
Utilize described F-FCH to receive reference power control PC bit, described have known value with reference to the PC bit, and be used to the signal quality of the described business datum on the described F-FCH is estimated.
39. method as claimed in claim 38 is characterized in that, also comprises:
Utilize long code that described business datum is carried out descrambling, wherein said long code is to use the Public Long Code Mask that is used for described F-FCH to generate.
40. method as claimed in claim 38 is characterized in that, also comprises:
Utilize long code that the described specific user's signaling that is used for described wireless device is carried out descrambling, wherein said long code is to use the unique Long Code Mask for described wireless device to generate.
41. method as claimed in claim 38 is characterized in that, also comprises:
Receive the reverse link RLPC information that is used for described wireless device via Forward Common Power Control Channel F-CPCCH.
42. method as claimed in claim 41 is characterized in that, also comprises:
Based on the long code of using Public Long Code Mask to generate, will carry out demultiplexing from the described RLPC information that is used for described wireless device of described F-CPCCH.
43. method as claimed in claim 38 is characterized in that, also comprises:
Based on the described received signal quality of estimating described F-FCH with reference to the PC bit that utilizes described F-FCH to receive;
Received signal quality based on the described estimation of described F-FCH generates the forward link FLPC bit that is used for described F-FCH; With
Transmit the FL PC bit that is used for described F-FCH via Reverse Pilot Channel R-PICH.
44. method as claimed in claim 43 is characterized in that, generates the described FL PC bit that is used for described F-FCH and comprises:
The received signal quality of the described estimation of the described F-FCH in each time interval compared with the set point of described F-FCH and
Generate the FLPC bit that is used for described F-FCH in the described time interval based on the result of described comparison.
45. method as claimed in claim 38 is characterized in that, also comprises:
Estimate the received signal quality of described F-DCCH;
Based on the received signal quality of the described estimation of described F-DCCH, generate the FL PC bit that is used for described F-DCCH; With
Generate the described FL PC bit that is used for described F-DCCH via Reverse Pilot Channel R-PICH.
46. method as claimed in claim 45 is characterized in that, the FL PC bit that described generation is used for described F-DCCH comprises:
The received signal quality of the estimation of the described F-DCCH in each time interval compared with the set point of described F-DCCH and
Generate the FLPC bit that is used for described F-DCCH in the described time interval based on the result of described comparison.
47. method as claimed in claim 46 is characterized in that, the FL PC bit that described generation is used for described F-DCCH also comprises:
Based on described specific user's signaling of utilizing described F-DCCH to receive, regulate the described set point of described F-DCCH.
48. method as claimed in claim 41 is characterized in that, the received signal quality of described F-DCCH is based on that the RL PC information that is used for described wireless device that receives via described F-CPCCH estimates.
49. method as claimed in claim 38, it is characterized in that, described business datum is to receive from a plurality of sectors of service are provided by at least one base station via described F-FCH, and described specific user's signaling receives from described a plurality of sectors via described F-DCCH.
50. method as claimed in claim 38 is characterized in that, also comprises:
Transmit pilot tone and forward link FLPC information via Reverse Pilot Channel R-PICH.
51. method as claimed in claim 50 is characterized in that, also comprises:
Based on the reverse link RLPC information that is used for described wireless device that receives is that described R-PICH regulates transmitting power.
52. method as claimed in claim 38 is characterized in that, also comprises:
Transmit the reverse link signaling via Reverse Fundamental Channel R-FCH.
53. method as claimed in claim 52 is characterized in that, unless there is the reverse link signaling that will transmit, described Reverse Fundamental Channel R-FCH is inactive.
54. a device that is used for receiving at wireless communication system the wireless device of data comprises:
Receive data processor, it can
Execution is used for receiving the processing that utilizes the business datum that described F-FCH sends about forward fundamental channel F-FCH's,
Execution about Forward Dedicated Control Channel F-DCCH be used for receiving utilize described F-DCCH send to described wireless device specific user's signaling processing and
Execution is used for receiving the processing that utilizes the reference power control PC bit that described F-FCH sends about described F-FCH's, described have known value and be used to reference to the PC bit signal quality of the described business datum on the described F-FCH is estimated.
55. device as claimed in claim 54 is characterized in that, described data processor can also
Execution utilizes the descrambling of long code to described business datum, and described long code is to generate by the Public Long Code Mask that use is used for described F-FCH.
56. device as claimed in claim 54 is characterized in that, described data processor can also
Execution utilizes the scrambling of long code to described specific user's signaling of being used for described wireless device, and described long code is to use and generates for the unique Long Code Mask of described wireless device.
57. device as claimed in claim 54 is characterized in that, also comprises
Controller, it can describedly estimate the received signal quality of described F-FCH with reference to the PC bit based on what utilize that described F-FCH receives, and can generate the forward link FLPC bit that is used for described F-FCH based on the received signal quality of the described estimation of described F-FCH; With
Transmit data processor, the described FL PC bit that is used for described F-FCH of the transmission that it can processing and utilizing Reverse Pilot Channel R-PICH.
58. device as claimed in claim 54 is characterized in that, also comprises:
Controller, it can estimate the received signal quality of described F-DCCH, and can generate the FLPC bit that is used for described F-DCCH based on the received signal quality of the described estimation of described F-DCCH; With
Transmit data processor, the described FL PC bit that is used for described F-DCCH of the transmission that it can processing and utilizing Reverse Pilot Channel R-PICH.
59. a device that is used for receiving at wireless communication system data comprises:
Be used for receiving the unit of business datum via forward fundamental channel F-FCH;
Be connected to the described unit that is used to receive the unit of business datum and is used for receiving the specific user's signaling that is used for wireless device via Forward Dedicated Control Channel F-DCCH; With
Be connected to the described unit that is used to receive the unit of business datum and is used to utilize described F-FCH reception reference power control PC bit, described have known value with reference to the PC bit, and be used to the signal quality of the described business datum on the described F-FCH is estimated.
60. device as claimed in claim 59 is characterized in that, also comprises:
Be used to utilize long code that described business datum is carried out the unit of descrambling, described long code is to use the Public Long Code Mask that is used for described F-FCH to generate.
61. device as claimed in claim 59 is characterized in that, also comprises:
Be used to utilize the long code the described specific user's signaling that is used for described wireless device is carried out the device of descrambling, described long code is to use and generates for the unique Long Code Mask of described wireless device.
62. device as claimed in claim 59 is characterized in that, also comprises:
Be used for estimating the unit of the received signal quality of described F-FCH based on the reference PC bit that utilizes described F-FCH to receive;
Be used for generating the unit of the forward link FLPC bit that is used for described F-FCH based on the received signal quality of the described estimation of described F-FCH.
Be used for transmitting the unit of the described FLPC bit that is used for described F-FCH via Reverse Pilot Channel R-PICH.
63. device as claimed in claim 59 is characterized in that, also comprises:
Be used to estimate the unit of the received signal quality of described F-DCCH;
Be used for based on the unit that the received signal quality of the estimation of described F-DCCH is generated the FL PC bit that is used for described F-DCCH; With
Be used for transmitting the unit of the described FL PC bit that is used for described F-DCCH via Reverse Pilot Channel.
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| US48683803P | 2003-07-11 | 2003-07-11 | |
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| CN101547068B (en) * | 2008-03-24 | 2012-02-22 | 华为技术有限公司 | Mapping method and mapping device for service channel resources and control channels |
| CN102026352B (en) * | 2009-09-22 | 2013-06-05 | 鼎桥通信技术有限公司 | Uplink united power control method and downlink united power control method in high speed packet access |
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