CN101400188A - Transmission method for high-speed downlink shared channel under non-CELL_DCH state - Google Patents
Transmission method for high-speed downlink shared channel under non-CELL_DCH state Download PDFInfo
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Abstract
The present invention discloses an HS-DSCH transmission method in a under non-CELL_DCH state, applied in a multi-carrier TD-SCDMA system. The method includes the following steps: Step A: establishing the HS-FACH relevant channels on the main carrier and/or secondary carrier, the network side notifying the HS-FACH relevant collocation information to user terminals through the district system information or dedicated signaling; Step B: the user terminal selecting a carrier with uplink random access resources to perform uplink accessing, and a base station Node B selecting a carrier with high speed forward access channel HS-FACH resources as a user terminal to schedule high speed downstream shared channel HS-DSCH resources. By the use of the method provided by the invention, it is defined that when HS-DSCH transfer is performed under non-CELL_DCH state in the multi-carrier HSDPA system, so that by changing the UE carrier presence mode under non-CELL_DCH state in the prior system, larger gain in the power system capacity aspect can be obtained; and this change conforms to the UE receiver gift in the prior system.
Description
Technical field
The present invention relates to the data transmission method of the high speed downlink shared channel HS-DSCH in the field of wireless communication, particularly relate to a kind of HS-DSCH transmission method under non-CELL _ DCH CELL_DCH state under the TD SDMA access TD-SCDMA multicarrier framework.
Background technology
3G (Third Generation) Moblie partnership 3GPP has finished Wideband Code Division Multiple Access (WCDMA) and has inserted the standardization effort that sub-district in the WCDMA system _ forward access channel CELL_FACH state strengthens in the Rel-7 version.The CELL_FACH state strengthens by introduce the packet data transmission performance that high speed-DSCH Downlink Shared Channel HS-DSCH transmission channel strengthens this state at the CELL_FACH state, makes it obtain less packet transfer delay and higher transmission rate.This mechanism also has been incorporated into paging and the transfer of data under UTRAN Acceditation Area paging channel URA_PCH and the cell _ paging channel CELL_PCH state.
In the version before 3GPP Rel-7, the HS-DSCH transmission is only used under CELL _ DCH CELL_DCH state, relevant channel Mapping relation as shown in Figure 1, wherein signaling on Dedicated Control Channel DCCH or the Dedicated Traffic Channel DTCH logic channel or data map are mapped on the high speed-downlink physical shared channel HS-PDSCH physical channel to the HS-DSCH transmission channel again.Network side disposes one group of high speed-shared control channel HS-SCCH channel and high speed-shared indicating channel HS-SICH and high speed descending sharing channel-Radio Network Temporary Identifier H-RNTI for UE in advance when setting up the relevant radio bearer of down high speed-DSCH Downlink Shared Channel HS-DSCH for user terminal UE.This group HS-SCCH/HS-SICH channel is that a plurality of UE timesharing are shared, and H-RNTI is the UE special use, and UE judges by the H-RNTI on the identification HS-SCCH whether this transmission points to oneself.In case detected the HS-SCCH channel that points to oneself, just read the information on the HS-SCCH channel.Concrete signaling content on the HS-SCCH comprises, code channel information and gap information are used to indicate UE to be about to the high speed down sharing physical channel HS-PDSCH channel resource that receives; Modulation system, transport block length are used to indicate transformat; The H-RNTI information that contains UE in the cyclic redundancy check field.Behind predetermined timing time nHS-SCCH, UE receives data on the HS-PDSCH of appointment channel, and behind the timing nHS-SICH of appointment, on the HS-SICH channel, mixing automatic repeat requests HARQ feedback and channel quality indication CQI report, Node B determines the transmission parameter that scheduling is next time used according to these feedback informations.With the TD-SCDMA system is example, and the schematic diagram that a HS-DSCH under the CELL_DCH state sends as shown in Figure 2.
In the CELL_FACH state after enhancing, up channel also is based on traditional Random Access Channel RACH/ Physical Random Access Channel PRACH, and downlink signaling or data are by the HS-DSCH/HS-PDSCH Channel Transmission.Non-CELL _ DCH state down channel mapping relations after the enhancing as shown in Figure 3.Wherein, original Common Control Channel CCCH, BCCH channel of broadcast control based on forward access channel FACH Channel Transmission all is mapped on the HS-DSCH channel; Originally the paging control channel (PCCH) channel based on paging channel PCH transmission also was mapped on the HS-DSCH channel.
The CELL_FACH of WCDMA system state next time the HS-DSCH transmission course as shown in Figure 4, wherein, information such as HS-SCCH channel, H-RNTI are broadcasted in cell system information, because these H-RNTI are shared by the UE in the sub-district, thereby are called public H-RNTI.When UE initiates connection request from Idle state, use the public H-RNTI in the cell system message to intercept the HS-SCCH channel.After UE enters connection status, when radio network controller (RNC) is UE configuration DTCH/DCCH channel, the H-RNTI of configure dedicated.UE uses special-purpose H-RNTI to receive the HS-SCCH channel after possessing special-purpose H-RNTI, does not receive and do not re-use public H-RNTI.
The BCCH channel of broadcast control channel of indication mainly carries the system information variation indication that defines in the radio resource control RRC agreement among Fig. 3, is used for the informing user terminal updating system information.In the version before Rel-7, this channel Mapping is to forward access channel FACH transmission channel, by auxiliary Common Control Channel S-CCPCH physical channel transmission.Content on the BCCH need be at whole Cell Broadcast CB, and the UE in the sub-district except being in the URA_PCH state may receive.When BCCH is mapped on the HS-DSCH, H-RNTI that BCCH is specific of network side definition, UE comes the indication of receiving system information change by detect this H-RNTI on the HS-SCCH channel.Like this, in a Transmission Time Interval TTI, UE need detect 2 H-RNTI, and one is the specific H-RNTI of BCCH, and one is public H-RNTI or dedicated H-RNTI.
Because a series of enhancement techniques of HS-DSCH itself (as based on the scheduling of Node B, HARQ etc.) can effectively improve data transfer rate, thereby will significantly improve signaling delay and data transfer rate under CELL_FACH, CELL_PCH, the URA_PCH state behind the introducing HS-DSCH.TD-SCDMA (TDS-CDMA system) also considers to carry out similar enhancing.
When in the TD-SCDMA system, the CELL_FACH state being strengthened, need on the basis of using for reference the WCDMA achievement in research, formulate the CELL_FACH enhanced scheme that is suitable for the TD-SCDMA system.TD-SCMDA and WCDMA have very big difference aspect system architecture.The TD-SCDMA system is a multicarrier system, a main carrier and many auxilliary carrier waves are arranged in the sub-district, the main carrier bearing public control channel, as P-CCPCH (Primary Common Control Physical Channel), PRACH (Random Access Channel), S-CCPCH (auxiliary Common Control Channel), FAPCH (confirming physical channel fast) and uplink and downlink pilot channel, also can the bearing part Traffic Channel; An auxilliary carrier wave bearer service channels.In existing system, the UE of CELL_FACH, CELL_PCH, URA_PCH state resides on the main carrier, when these states are strengthened, is based upon on the main carrier if channel still limits, and capacity will be limited, and the space of enhancing is also very limited.Thereby need consider HS-DSCH transmission plan under these states based on the multicarrier framework of TD-SCDMA.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of HS-DSCH transmission plan under non-CELL _ DCH state under the TD-SCDMA multicarrier framework is provided, and is applied in the CELL_FACH enhancement techniques, can obtain the gain of bigger power system capacity aspect.
The HS-DSCH that the present invention refers in particular to non-CELL _ DCH state under with " HS-FACH (at a high speed-forward access channel) " transmits.
In order to solve the problems of the technologies described above, the invention provides the HS-DSCH transmission method under a kind of non-CELL _ DCH state, be applied to multi-carrier TD-SCDMA system, this method may further comprise the steps:
Steps A: the channel that described HS-FACH is relevant is based upon on main carrier and/or the auxilliary carrier wave, and network side is notified user terminal by cell system information or the dedicated signaling configuration information that HS-FACH is relevant;
Step B: the carrier wave that one of user terminal selecting has uplink random access resources carries out up access, and the carrier wave that base station node B selection has high-speed forward access channel HS-FACH resource is a scheduling of user terminals high speed downlink shared channel HS-DSCH resource.
The channel that HS-FACH is relevant in the described steps A comprises, high speed downlink shared channel HS-DSCH control channel and high-speed downstream Physical Shared Channel HS-PDSCH, described HS-DSCH control channel comprises one or more HS-SCCH channel, if allow the ascending HARQ feedback, also comprise the HS-SICH channel that disposes in pairs with the HS-SCCH channel.
Described network side comprises in the following configuration information one or more by the relevant configuration information of cell system information broadcasting HS-FACH: the configuration information of HS-DSCH control channel, the configuration information of HS-PDSCH, public high speed descending sharing channel-Radio Network Temporary Identifier H-RNTI, mix automatic repeat requests HARQ configuration, priority query, and the incidence relation between HS-PDSCH channel and the HS-DSCH control channel;
Described network side is the H-RNTI of user terminal configure dedicated by dedicated signaling after user terminal enters connection status, or reshuffles the HS-DSCH transfer resource in the H-RNTI of configure dedicated.
High-speed downstream Physical Shared Channel HS-PDSCH on the described carrier wave with high-speed forward access channel HS-FACH resource is related with one or more pairs of high speed downlink shared channel HS-DSCH control channels, and is positioned on the same carrier wave.
Comprise among the described step B that described user terminal selects a main carrier or auxilliary carrier wave to carry out up access according to one of following rule:
1) fixing carrier wave of user terminal selecting carries out up access, and described fixed carrier is by high level configuration or system's agreement;
2) rule of network side and user terminal agreement is selected the carrier wave of access, selects a carrier wave according to formula H-RNTI% N; Wherein H-RNTI is high speed descending sharing channel-Radio Network Temporary Identifier that user terminal uses, and N is the carrier number at up access-in resource place in the sub-district;
3) user terminal selects the carrier wave with uplink random access resources to insert based on the measurement of oneself.
Comprise among the described step B that the carrier wave that described base station node B selects to have high-speed forward access channel HS-FACH resource according to one of following rule is a scheduling of user terminals high speed downlink shared channel HS-DSCH resource:
1), fixes on approximately on the fixing carrier wave and dispatch for the scheduling of public high speed descending sharing channel-Radio Network Temporary Identifier H-RNTI; For the user terminal with specialized high-speed DSCH Downlink Shared Channel-Radio Network Temporary Identifier H-RNTI, base station node B only carries out the scheduling of high-speed forward access channel HS-FACH resource to this user terminal on user terminal carries out that carrier wave of up access.
2) rule of network side and user terminal agreement is selected resident carrier wave, selects a carrier wave according to formula H-RNTI% N; Wherein H-RNTI is high speed descending sharing channel-Radio Network Temporary Identifier that user terminal uses, and N is the carrier number that has the HS-FACH resource in the sub-district;
3) base station node B selects a carrier wave this user terminal to be carried out the scheduling of high-speed forward access channel HS-FACH resource according to the measurement result of oneself.
Described when base station node B be that the high speed downlink shared channel HS-DSCH resource of scheduling of user terminals is when being positioned on the auxilliary carrier wave, user terminal also needs to wait at one's leisure the measurement of upgrading the cell system information on the main carrier or carrying out high-rise appointment, carry out at user terminal during the measurement of high-rise appointment, Node B should not dispatch user terminal.
When dispatch described base station,, determine transmission parameter according to the channel quality on the auxilliary carrier wave of measurement result estimation of the main carrier of user terminal to send up on auxilliary carrier wave; According to the user on the high speed downlink shared channel HS-DSCH ascending control channel transmission quality and the feedback of link-quality determine transmission parameter.
Described non-CELL _ DCH CELL_DCH state comprises Idle state, sub-district _ forward access channel CELL_FACH state, cell _ paging channel CELL_PCH state, UTRAN Acceditation Area _ paging channel URA_PCH state.
A kind of transmission method based on BCCH channel of broadcast control under the non-CELL _ DCH CELL_DCH state comprises:
When a, network side send information on the BCCH channel of broadcast control at needs, on the carrier wave that disposes high-speed forward access channel HS-FACH resource, all send, and in cell system information the specific high speed descending sharing channel-Radio Network Temporary Identifier H-RNTI of broadcast control channel BCCH channel;
B, user terminal are intercepted the specific high speed descending sharing channel of BCCH channel of broadcast control channel-Radio Network Temporary Identifier H-RNTI on own resident carrier wave.
Carrier wave described in the described step a is meant the carrier wave at HS-DSCH transmission place under the carrier wave that is allocated in the transmission of HS-DSCH under CELL_FACH state place and the CELL_PCH state, comprises main carrier and/or auxilliary carrier wave.
When sending BCCH channel of broadcast control on a plurality of carrier waves, to accomplish network side described in the described step a synchronously.
A high speed descending sharing channel-Radio Network Temporary Identifier H-RNTI that BCCH channel of broadcast control channel is specific is only distributed in a described sub-district, perhaps, be H-RNTI of each allocation of carriers, the H-RNTI difference that different carrier distributes, described H-RNTI passes through the cell system information informing user terminal by network side.
Advantage of the present invention: by adopting method provided by the present invention, clear and definite when in the multi-carrier HSDPA system, the UE under the non-CELL _ DCH state being carried out the HS-DSCH transmission, related resource can be based upon on the auxilliary carrier wave, like this by changing the resident mode of carrier wave of the UE under the non-CELL _ DCH state in the original system, can obtain the gain of bigger power system capacity aspect, and this change also meets the receiver ability of UE in the existing system.Under said method of the present invention, the HS-FACH resource can be based upon on main carrier and the auxilliary carrier wave, UE just may reside on main carrier or the auxilliary carrier wave, because the receiver of some UE is limited in one's ability, can not receive 2 data on the carrier wave simultaneously, transmission method by BCCH channel under the non-CELL _ DCH state provided by the invention, make the BCCH channel on the resident carrier wave of the UE of all non-CELL _ DCH states, to send, UE only need intercept the BCCH on the own resident carrier wave, eliminate the restriction of UE receiver ability aspect, guaranteed all UE all have the ability to detect constantly transmission of BCCH channel.
Description of drawings
Fig. 1 is the schematic diagram that the channel Mapping in the HS-DSCH transmission concerns under the CELL_DCH state in the existing system;
Fig. 2 is that HS-DSCH under the CELL_DCH state sends and the schematic diagram of receiving course in the TD-SCDMA system;
Fig. 3 is the channel Mapping relation that the HS-DSCH transmission is relevant in the CELL_FACH enhancement techniques;
Fig. 4 is the transmission of HS-DSCH next time of CELL_FACH state and the schematic diagram of receiving course in the prior art;
Fig. 5 is the HS-DSCH transmission method flow chart under a kind of non-CELL _ DCH state of the present invention;
Fig. 6 is the method flow diagram of transmission BCCH channel under the non-CELL _ DCH state of the present invention;
Fig. 7 transmits the process schematic diagram of HS-DSCH down for non-CELL _ DCH state in the multi-carrier TD-SCDMA system of giving an example according to the present invention.
Embodiment
Below in conjunction with embodiment the technical problem to be solved in the present invention is described further:
The CELL_FACH enhancement techniques also will be incorporated into the TD-SCDMA system, be that example is introduced the present invention with the TD-SCDMA system below.
The non-CELL _ DCH state of indication of the present invention comprises a plurality of states such as Idle state, CELL_FACH, CELL_PCH, URA_PCH.Wherein, the HS-DSCH of Idle state UE receives and refers to that mainly UE initiates to receive the process that message is set up in the RRC connection behind the RRC connection request; UE under the CELL_FACH state receives high-level signaling or data by HS-DSCH; Under the CELL_PCH state, UE is in DRX (discontinuous reception) paging receiving message or receive direct transferring of high-level signaling and data by the HS-DSCH channel in the cycle; And the paging receiving message in DRX cycle only of the UE under the URA_PCH state.
As shown in Figure 5, the HS-DSCH transmission method under a kind of non-CELL _ DCH state of the present invention:
Steps A: the channel that the HS-FACH under the non-CELL _ DCH state is relevant can be based upon on main carrier and/or the auxilliary carrier wave, and the configuration information that network side is correlated with the HS-FACH transmission by cell system information or dedicated signaling is notified the UE under these states.
In existing multi-carrier TD-SCDMA system, the used FACH/S-CCPCH channel of downlink transfer only exists on main carrier, and the UE of non-CELL _ DCH state resides in and measures on the main carrier or transceive data.Consider the main carrier finite capacity; And other terminal of lowest capability level under the multi-carrier TD-SCDMA system can receive 2 data (is that main carrier, are auxilliary carrier waves) on the carrier wave by the time division frequency hopping mode, thereby the present invention UE of proposing non-CELL _ DCH state can receive the HS-DSCH transmission on the auxilliary carrier wave.Like this, the HS-DSCH capacity under these states can promote greatly, and more user can reside in these states, and this as E-mail, trunking communication, is very useful for carrying out the small data quantity business that remains on connection status when some need be grown.
Network side is by the relevant configuration of cell system information broadcasting HS-FACH, comprise: the configuration information of HS-DSCH control channel, control channel is meant one or more HS-SCCH channel, if allow the ascending HARQ feedback, also comprise the HS-SICH channel, the configuration of each channel comprises configurations such as frequency, time slot, code channel, intermediate code; The configuration information of HS-PDSCH channel comprises frequency and intermediate code information; Public H-RNTI information; The relevant information of HARQ (mixing automatic repeat requests); Priority query's information; The map information of logic channel and priority query etc.Wherein, the frequency at HS-PDSCH channel place can have one or more, can be on main carrier and/or auxilliary carrier wave.
When under the CELL_DCH state, transmitting HS-DSCH, the transmission of a HS-DSCH of one or more pairs of HS-SCCH/HS-SICH channels controls.Same, under non-CELL _ DCH state, network side also needs to dispose the frequency at HS-DSCH Traffic Channel place and the incidence relation between the control channel.In order to simplify the reception of UE, HS-PDSCH channel and HS-DSCH control channel (HS-SCCH/HS-SICH) with incidence relation are positioned on the same carrier wave.
As shown in the table is one group of configuration information that is used for HS-DSCH transmission under the CELL_FACH state, can broadcast by cell system information.Wherein, all configuration informations under " HS-FACH information " are used for the reception of HS-DSCH under the CELL_FACH state.
| Information element | Essential | Type | Explain |
| HS-FACH information | Be used for the reception of HS-DSCH under the CELL_FACH state | ||
| The map information of logic channel and priority query | Essential | Integer | With the collocation method in the existing system |
| Priority query's information | Essential | With the collocation method in the existing system | |
| The HARQ configuration information | Essential | With the collocation method in the existing system | |
| Public H-RNTI configuration | Essential | 1..maxCommonHRNTI | MaxCommonHRNTI: the public H-RNTI number that system distributes at most |
| H-RNTI | Bitstring (16) | Bitstring: Bit String | |
| Channel configuration | 1..maxTDD128Carrier | MaxTDD128Carrier: maximum carrier numbers that system supports | |
| The HS-SCCH channel information | Essential | The physical channel configuration | Wherein comprise many HS-SCCH channel configurations, configuration information comprises: frequency, code channel, time slot, intermediate code etc. |
| The configuration of HS-PDSCH intermediate code | Essential | The configuration of TD-SCDMA intermediate code | |
| HS-PDSCH channel place frequency | Essential | Frequency point information |
In one " channel configuration " configuration example down, disposed HS-SCCH channel and HS-PDSCH channel on the frequency, this has also implied the incidence relation of these channels, and promptly these HS-SCCH channels are to control HS-PDSCH channel on this frequency.Frequency wherein can be main carrier or auxilliary carrier wave, and high level can be set up the HS-FACH channel resource on a plurality of auxilliary carrier waves.
When being the H-RNTI of UE configure dedicated of CELL_FACH state, can reshuffle the HS-DSCH transfer resource for it, such as concrete HS-PDSCH frequency point information, HARQ configuration information.
When the UE under CELL_PCH, the URA_PCH state is carried out paging, can continue to use the HS-SCCH-less scheme of existing FDD, promptly not send the HS-SCCH channel.Like this at not needing to dispose HS-SCCH in the configuration information of beep-page message, and need comprise the configuration information (frequency, code channel, time slot, intermediate code etc.) of HS-PDSCH channel, the configuration information of transport block length etc., wherein the frequency of HS-PDSCH channel can be not limited on the main carrier.When carrying out the direct transferring of signaling or data under the CELL_PCH state, channel configuration can be consistent with " channel configuration " in the table 1, and this moment, UE disposed special-purpose H-RNTI, and priority query and HARQ information can be the UE configuration by dedicated signaling.
The UE of idle condition or a public H-RNTI reception HS-DSCH of the UE selection transmission that enters new sub-district through the sub-district gravity treatment, the selection mode of public H-RNTI can be with reference to the WCDMA system.After entering connection status, network side can pass through dedicated signaling, as radio bearer reshuffle, physical channel is reshuffled etc., is the H-RNTI of UE configure dedicated, also can dispose the frequency point information at HS-PDSCH channel place.After UE has obtained dedicated H-RNTI and HS-PDSCH frequency point information, can on this frequency, detect special-purpose H-RNTI, this process is consistent with HS-DSCH receiving course under the existing CELL_DCH state.
Step B:UE selects the carrier wave with uplink random access resources to carry out up access, and the carrier wave that the NodeB selection has the HS-FACH resource is a UE scheduling HS-DSCH resource.
In existing multi-carrier TD-SCDMA system, uplink random inserts relevant resource and only exists on main carrier, transmit based on after the enhancing of multicarrier framework according to the descending HS-FACH of the method for the invention, ascending resource is obviously limited, thereby also can carry out uplink random on the auxilliary carrier wave of suggestion and insert.It is multiple that UE selects the mode of carrier wave to have, and can be one of following:
1) UE selects a fixing carrier wave to carry out up access, and described fixed carrier is by high level configuration or system's agreement;
2) rule of network side and UE agreement is selected the carrier wave of access, such as selecting a carrier wave according to (H-RNTI%N) formula; Wherein H-RNTI is high speed descending sharing channel-Radio Network Temporary Identifier that UE uses, and N is the carrier number at up access-in resource place in the sub-district;
3) UE inserts according to the carrier wave with uplink random access resources of policy selection of oneself, and the strategy of UE can be selected the carrier wave access preferably of a channel quality based on the measurement of oneself.
Node B scheduling can have multiple implementation, can be following method:
1) for the scheduling of the HS-FACH resource of the UE that uses public H-RNTI, can fix on approximately on the fixing carrier wave and dispatch, network side is notified UE with this carrier information by cell system information; For the UE with dedicated H-RNTI, Node B only carries out on that carrier wave of up access this UE being carried out the scheduling (system need guarantee to have on the carrier wave of uplink random access resources all the HS-FACH resource) of HS-FACH resource at UE;
2) rule of network side and UE agreement is selected resident carrier wave, such as selecting a carrier wave according to (H-RNTI%N) formula; Wherein H-RNTI is high speed descending sharing channel-Radio Network Temporary Identifier that UE uses, and N is the carrier number at HS-FACH resource place in the sub-district;
3) Node B selects a carrier wave this UE to be carried out the scheduling of HS-FACH resource according to the measurement result of oneself.
Under the CELL_DCH state, the UE with multicarrier receiving ability can receive the HS-PDSCH transmission on a plurality of carrier waves simultaneously in a TTI.Since non-CELL _ DCH state towards business all be small data quantity, generally do not need single UE is bundled transmission on a plurality of carrier waves, when particularly public H-RNTI being transmitted, intercept UE ability and the disunity of same public H-RNTI, thereby restriction is only carried out scheduled transmission on a carrier wave.To having the UE of dedicated H-RNTI, Node B also can be that UE dispatches on a plurality of carrier waves according to the multicarrier receiving ability of UE.When Node B is the HS-DSCH resource of UE scheduling when being positioned on the auxilliary carrier wave, UE also needs to wait at one's leisure the measurement of upgrading the cell system information on the main carrier or carrying out high-rise appointment.Carry out at UE during the measurement of high-rise appointment, Node B should not dispatch UE.
When carrying out the HS-DSCH transmission under the CELL_DCH state, UE at every turn can be by the HS-SICH channel feedback quality of reception (being the HARQ feedback) and link-quality.When transmitting under non-CELL _ DCH state, need to distinguish 2 kinds of situations, a kind of situation, another kind that is public H-RNTI transmits is the situation of dedicated H-RNTI transmission.When public H-RNTI transmission, network side can only with reference to UE when initial the access (comprise RRC connect set up or the sub-district gravity treatment after cell update) measurement result that reports in RRC (Radio Resource control) message carries out basic link adaptation.Main measurement result comprises the received signal code power of main carrier beacon channel, can obtain path loss values according to this information, and the path loss values on the auxilliary carrier wave is approximate with it; Also has the time slot signal sign indicating number power on the main carrier in addition in the measurement result.When the Node B scheduling HS-DSCH resource that is UE on auxilliary carrier wave, can comprise resource size, transformat and retransmit number of times according to the channel quality on the auxilliary carrier wave of measurement result estimation of UE main carrier to determine transmission parameter.Utilize to retransmit and to remedy the loss that auxilliary carrier channel quality is underestimated.
After UE had special-purpose H-RNTI, network side still can be assessed channel quality according to the measurement result that UE reports in RRC message, determine transmission parameter; It is also conceivable that and introduce uplink feedback channel HS-SICH, this channel and HS-SCCH channel have incidence relation one to one, and HS-SICH channel and HS-SCCH with incidence relation always are positioned on the same carrier frequency.UE selects the HS-SICH channel according to the HS-SCCH channel that receives, and reports the report of HARQ confirmation and channel quality.HS-SCCH and HS-SICH are shared channels, and the timing relationship of determining between HS-SCCH, HS-PDSCH and the HS-SICH makes Node B feedback channel and HS-DSCH transmission can be mapped.
According to said method, exist on a plurality of carrier waves of resource permission in the sub-district that the HS-FACH transmission is correlated with, this has improved the power system capacity under the CELL_FACH state greatly, and UE also only can be resident on auxilliary carrier wave resident being strengthened on the main carrier from original.Agreement UE needs to detect 2 H-RNTI in the prior art in a TTI, and one is the specific H-RNTI of BCCH, is used to receive the information on the BCCH channel; One is public H-RNTI or dedicated H-RNTI, is used to receive common signaling or transfer of data.The BCCH channel is a broadcast channel, has wherein carried system information and has changed indication, and this information is extremely important to the configuration synchronization of UE maintenance and network side.The BCCH channel is mainly received by the UE under CELL_FACH state, CELL_PCH state and the CELL_DCH state.Fix on approximately under the multicarrier framework and can set up the HS-FACH resource according to the inventive method based on main carrier and/or a plurality of auxilliary carrier wave, UE under the non-CELL _ DCH state in the sub-district just may reside on main carrier or the auxilliary carrier wave, because the receiver of some UE is limited in one's ability, can not receive 2 data on the carrier wave simultaneously, thereby need consider the relation between the carrier wave at transmission place of BCCH transmission and ordinary signaling, data.In existing system, these two kinds of transmission may take place simultaneously, if be limited to a carrier wave, as sending BCCH on the main carrier, possibly can't in time receive for the UE that resides in the single carrier receiving ability on the auxilliary carrier wave so, like this, the receiver ability of all UE in the sub-district need be considered, the UE of single carrier receiving ability need be taken into account for the transmission of BCCH channel.As shown in Figure 6, another aspect of the present invention, the transmission method of BCCH channel under the non-CELL _ DCH state comprises:
When a, network side send information on the BCCH (mainly be in the RRC agreement system information change Indication message) at needs, on all relevant carrier waves, all send.The carrier wave here is meant and is assigned under the carrier wave that is used for HS-DSCH transfer resource under the CELL_FACH state and the CELL_PCH state by the carrier wave at HS-DSCH transmission place, can be main carrier and/or auxilliary carrier wave.
When sending BCCH on a plurality of carrier waves, need accomplish network side synchronously.The system information that may receive simultaneously on a plurality of carrier waves for the UE of multicarrier receiving ability changes indication, and whether UE can distinguish by the content in these message be that same system information changes Indication message.
Before this, network side need be in cell system information the specific H-RNTI of broadcast BC CH channel, a H-RNTI that BCCH is specific can only be distributed in a sub-district; Also can be by the specific H-RNTI of allocation of carriers BCCH (that is, different carrier distributes the different specific H-RNTI of BCCH).
User terminal under b, the non-CELL _ DCH state can only be intercepted the specific H-RNTI of BCCH channel on own resident carrier wave, receive when having avoided multicarrier, make and the terminal of the minimum ability system information that also can upgrade in time reduced requirement the UE receiver.
According to above 2 methods, shown in Figure 7, be the procedure chart that non-CELL _ DCH state transmits HS-DSCH down in the concrete multi-carrier TD-SCDMA system (supposing that UE uses public H-RNTI, do not carry out the ascending HARQ feedback).
Whether in a TTI, UE intercepts the HS-SCCH channel on resident carrier wave, detect to contain and own relevant public H-RNTI and the specific H-RNTI of BCCH, and wherein this carrier wave can be main carrier or auxilliary carrier wave.The hypothesis UE of this place has detected one's own public H-RNTI and the specific H-RNTI of BCCH at this TTI.
UE receives relevant HS-PDSCH channel after receiving the timing nHS-SCCH that determines of HS-SCCH, decoding obtains corresponding data.
Above-mentioned BCCH transmission method considers that mainly the HS-DSCH that part UE can not receive on a plurality of carrier waves simultaneously in the existing system transmits, but can detect 2 H-RNTI on the single carrier wave simultaneously, thereby the present invention can solve practical problem, terminal capability proposed more requirements.
Method of the present invention is not restricted to listed utilization in specification and the execution mode.Concerning the technology of the present invention those of ordinary skill in the field, can make various corresponding changes and distortion according to the present invention, and all these corresponding changes and distortion all belong to the protection range of claim of the present invention.
Claims (13)
1, the transmission method of the high speed downlink shared channel HS-DSCH under a kind of non-CELL _ DCH CELL_DCH state, be applied to multi-carrier TD-SCDMA system, HS-DSCH transmission under the described non-CELL _ DCH state is transmitted hereinafter referred to as high-speed forward access channel HS-FACH, it is characterized in that this method may further comprise the steps:
Steps A: the channel that described HS-FACH is relevant is based upon on main carrier and/or the auxilliary carrier wave, and network side is notified user terminal by cell system information or the dedicated signaling configuration information that HS-FACH is relevant;
Step B: the carrier wave that one of user terminal selecting has uplink random access resources carries out up access, and the carrier wave that base station node B selection has high-speed forward access channel HS-FACH resource is a scheduling of user terminals high speed downlink shared channel HS-DSCH resource.
2, method according to claim 1, it is characterized in that, the channel that HS-FACH is relevant in the steps A comprises, high speed downlink shared channel HS-DSCH control channel and high-speed downstream Physical Shared Channel HS-PDSCH, described HS-DSCH control channel comprises one or more HS-SCCH channel, if allow the ascending HARQ feedback, also comprise the HS-SICH channel that disposes in pairs with the HS-SCCH channel.
3, method according to claim 2 is characterized in that,
Network side comprises in the following configuration information one or more by the relevant configuration information of cell system information broadcasting HS-FACH: the configuration information of HS-DSCH control channel, the configuration information of HS-PDSCH, public high speed descending sharing channel-Radio Network Temporary Identifier H-RNTI, mix automatic repeat requests HARQ configuration, priority query, and the incidence relation between HS-PDSCH channel and the HS-DSCH control channel;
Network side is the H-RNTI of user terminal configure dedicated by dedicated signaling after user terminal enters connection status, or reshuffles the HS-DSCH transfer resource in the H-RNTI of configure dedicated.
4, method according to claim 3, it is characterized in that, high-speed downstream Physical Shared Channel HS-PDSCH on the described carrier wave with high-speed forward access channel HS-FACH resource is related with one or more pairs of high speed downlink shared channel HS-DSCH control channels, and is positioned on the same carrier wave.
5, method according to claim 1 is characterized in that, comprises among the step B, and described user terminal selects a main carrier or auxilliary carrier wave to carry out up access according to one of following rule:
1) fixing carrier wave of user terminal selecting carries out up access, and described fixed carrier is by high level configuration or system's agreement;
2) rule of network side and user terminal agreement is selected the carrier wave of access, selects a carrier wave according to formula H-RNTI%N; Wherein H-RNTI is high speed descending sharing channel-Radio Network Temporary Identifier that user terminal uses, and N is the carrier number at up access-in resource place in the sub-district;
3) user terminal selects the carrier wave with uplink random access resources to insert based on the measurement of oneself.
6, method according to claim 1, it is characterized in that, comprise among the step B that the carrier wave that described base station node B selects to have high-speed forward access channel HS-FACH resource according to one of following rule is a scheduling of user terminals high speed downlink shared channel HS-DSCH resource:
1), fixes on approximately on the fixing carrier wave and dispatch for the scheduling of public high speed descending sharing channel-Radio Network Temporary Identifier H-RNTI; For the user terminal with specialized high-speed DSCH Downlink Shared Channel-Radio Network Temporary Identifier H-RNTI, base station node B only carries out the scheduling of high-speed forward access channel HS-FACH resource to this user terminal on user terminal carries out that carrier wave of up access.
2) rule of network side and user terminal agreement is selected resident carrier wave, selects a carrier wave according to formula H-RNTI%N; Wherein H-RNTI is high speed descending sharing channel-Radio Network Temporary Identifier that user terminal uses, and N is the carrier number that has the HS-FACH resource in the sub-district;
3) base station node B selects a carrier wave this user terminal to be carried out the scheduling of high-speed forward access channel HS-FACH resource according to the measurement result of oneself.
7, method according to claim 6, it is characterized in that, when base station node B is that the high speed downlink shared channel HS-DSCH resource of scheduling of user terminals is when being positioned on the auxilliary carrier wave, user terminal also needs to wait at one's leisure the measurement of upgrading the cell system information on the main carrier or carrying out high-rise appointment, carry out at user terminal during the measurement of high-rise appointment, Node B should not dispatch user terminal.
8, method according to claim 1 is characterized in that, when dispatch on auxilliary carrier wave described base station, according to the channel quality on the auxilliary carrier wave of measurement result estimation of the main carrier of user terminal to send up, determines transmission parameter; According to the user on the high speed downlink shared channel HS-DSCH ascending control channel transmission quality and the feedback of link-quality determine transmission parameter.
9, method according to claim 1, it is characterized in that described non-CELL _ DCH CELL_DCH state comprises Idle state, sub-district _ forward access channel CELL_FACH state, cell _ paging channel CELL_PCH state, UTRAN Acceditation Area paging channel URA_PCH state.
10, a kind of transmission method based on BCCH channel of broadcast control under the non-CELL _ DCH CELL_DCH state of method according to claim 1 comprises:
When a, network side send information on the BCCH channel of broadcast control at needs, on the carrier wave that disposes high-speed forward access channel HS-FACH resource, all send, and in cell system information the specific high speed descending sharing channel-Radio Network Temporary Identifier H-RNTI of broadcast control channel BCCH channel;
B, user terminal are intercepted the specific high speed descending sharing channel of BCCH channel of broadcast control channel-Radio Network Temporary Identifier H-RNTI on own resident carrier wave.
11, method according to claim 10, it is characterized in that, carrier wave described in the step a is meant the carrier wave at HS-DSCH transmission place under the carrier wave that is allocated in the transmission of HS-DSCH under CELL_FACH state place and the CELL_PCH state, comprises main carrier and/or auxilliary carrier wave.
12, method according to claim 10 is characterized in that, will accomplish when network side described in the step a sends BCCH channel of broadcast control on a plurality of carrier waves synchronously.
13, method according to claim 10, it is characterized in that, a high speed descending sharing channel-Radio Network Temporary Identifier H-RNTI that BCCH channel of broadcast control channel is specific is only distributed in a sub-district, perhaps, be H-RNTI of each allocation of carriers, the H-RNTI difference that different carrier distributes, described H-RNTI passes through the cell system information informing user terminal by network side.
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