CN1867184A - Downlink shared channel switching method - Google Patents
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- CN1867184A CN1867184A CNA2006100002178A CN200610000217A CN1867184A CN 1867184 A CN1867184 A CN 1867184A CN A2006100002178 A CNA2006100002178 A CN A2006100002178A CN 200610000217 A CN200610000217 A CN 200610000217A CN 1867184 A CN1867184 A CN 1867184A
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Abstract
The invention relates to a switch method of descending shared channel. Wherein, RNC (wireless network controller), before switching descending share channel, sends the user service data to the base station of original region, to make said base station know that the user needs switch, and make the base station prefer to send said user service data first; therefore, based on the service with high-layer retransmit mechanism, it can effectively avoid the RNC to retransmit service data and avoid the RNC ineffective retransmission, to save bandwidth of Iub transmission and idle port transmission, reduce the transmission time delay of user data, and confirm the service continuity in switch process.
Description
Technical field
The present invention relates to wireless communication technology field, be specifically related to a kind of changing method of DSCH Downlink Shared Channel.
Background technology
WCDMA (Wideband Code Division Multiple Access, the Wideband Code Division Multiple Access (WCDMA) access) technology protocol version the earliest is Release99, in this version, the carrying of uplink and downlink business all is based on dedicated channel, and the message transmission rate of uplink and downlink all can reach 384Kbps.
Because the user is more and more higher to the demand of message transmission rate, the WCDMA standard formulation is organized and has been released down high-speed data bag access technology and up-high speed data packet access technique subsequently successively, these two kinds of access technologies can provide the peak rate up to 14.4Mbps and 5.76Mbps respectively, and spectrum efficiency has also obtained very big raising.
HSDPA (High Speed Downlink Packet Access, the high-speed downstream bag inserts) as high-speed down link data packet access technique, in the version that was incorporated into 3GPP Release5 in 2002, the main feature of HSDPA system comprises: the short frame that adopts 2ms, adopt HARQ (Hybrid AutomaticRepeat Request in physical layer, physical layer mixed self-adapting repeat requests) and AMC (Adaptive Modulation andCoding, Adaptive Modulation and Coding) technology, introduce 16QAM (Quadrature Amplitude Modulation, the hexadecimal quadrature amplitude modulation(PAM)) high order modulation improves the availability of frequency spectrum, realizes the shared channel scheduling of each UE (subscriber equipment) by sign indicating number branch and time-division.HARQ technology has wherein adopted SAW (Stop-And-Wait, stop etc.) agreement, require the base station after sending data to UE, need obtain UE feeding back ACK/NACK (answer signal/wrong responses signal), the base station can know by ACK/NACK whether UE correctly receives data, thereby determine and still to send new data to the UE data retransmission to UE.HSDPA has increased by two physical channels descending, and one is HS-SCCH (High Speed Shared ControlChannel, High-Speed Shared Control Channel), is used to carry the required signaling of demodulation companion data channel HS-PDSCH; Another is HS-PDSCH (High Speed Physical Downlink Shared Channel, a high-speed physical downlink shared channel (HS-PDSCH)), is used to carry user's data information.HSDPA is at a up physical channel HS-DPCCH (the high speed-dedicated physical control channel that increased, High-Speed Dedicated Physical Control Channel), whether the downlink data frame HS-PDSCH that this channel is used to carry user feedback receives correct information is ACK/NACK, perhaps is used to carry CQI (channel quality indication (CQI) information).Simultaneously, the HSDPA system has also increased MAC-hs (Medium Access Control-high speed at the MAC layer, the access control of high speed shared channels medium) entity is supported the Flow Control of HSDPA, carrying out fast dispatch/priority management, HARQ and TFRI (Transport Format and Resource Indicator, transformat and resource indication) selects.MAC-hs is positioned under MAC-d (Medium Access Control-dedicate, the access control of the dedicated channel medium) entity, on the physical layer.
HSUPA (High Speed Uplink Packet Access, the high speed uplink bag inserts) is as the high speed uplink data packet access technique, in the version that was incorporated into 3GPP Release6 in 2004.The main feature of HSUPA system comprises: adopt short frame of 2ms or 10ms frame, adopt the HARQ technology in physical layer, and adopt the fast dispatch technology at place, up base station, improved up spectrum efficiency.
In wireless communication system, because the user has mobility, so wireless communication system will be supported the switching of user between different base stations.In the WCDMA system, a key technology of introducing is exactly a soft handover, the implementation procedure of soft handover is: the CPICH of UE measure neighbor cells (Common Pilot Channel, public pilot channel) Ec/IO (every chip signal energy and noise energy ratio), UE sets up, safeguards a DCH (Dedicated Channel according to measurement result, dedicated channel) Active Set, UE are kept soft handover with the sub-district in the DCH Active Set and are connected, and keep transfer of data.Sub-district in the DCH Active Set can belong to same base station, also can belong to different base stations.
Can only carry out the direct-cut operation of different base station minizone compares with GSM (global system for mobile communications) in the second generation mobile communcations system, soft handover has improved the data smoothing transmission of user in the different base station minizone, make that professional service quality is relatively good, and be not easy to cause loss of data.But, in the data transmission procedure of HSDPA system, because the protocol infrastructure of HSDPA makes HSDPA user can only carry out direct-cut operation in the different base station minizone.For the RLC transmission mode of AM (affirmation), may cause a large amount of rlc layer transfer of data, make the user very big in the reportedly defeated time delay of different base station minizone switching; For the RLC transmission mode of UM (non-affirmation), may cause lot of data to be lost, make user's professional receptive substance quantitative change get very poor.In the transfer of data of HSUPA, inherited the characteristic of up soft handover, support the up soft handover of HSUPA.For E-DCH (enhancing dedicated channel), the user also safeguards an E-DCH Active Set, E-DCH Active Set or identical with the DCH Active Set, or the subclass of DCH Active Set, make that in soft handover area the user can obtain soft handover gain by uplink macro diversity, make when the user switches in the different base station minizone, compare direct-cut operation, easier being protected of user uplink data transmission, and make data transmission delay also reduce relatively.
The appearance of HSDPA and HSUPA, make IP become possibility at empty port load-supporting, following multimedia IP operation all can be carried with HSDPA and HSUPA probably, to improve the capacity and the coverage property of system, therefore, how to reduce the propagation delay time of HSDPA carrying data, the transfer of data that direct-cut operation especially takes place in the minizone of different base station takes over seamlessly, and is a very important problem.
In the HSDPA system, exist in the base station sub-district switch and the base station between the sub-district switch, wherein, the sub-district switching is meant between the base station, support the cell-of-origin of HSDPA to be positioned at a base station, and the Target cell that the user will switch to is positioned at the another one base station, and, target cell base station can be positioned at different RNC (network controller) with source cell base station, also can be positioned at same RNC.
Be described below in conjunction with the implementation procedure that switch the sub-district between the base station in 1 pair of HSDPA system of accompanying drawing.
Left figure among Fig. 1, Serving RNC receives the 1D incident that UE reports, it is the best cell altering event, after keeping one section lag time, Serving RNC judges whether to initiate direct-cut operation, if direct-cut operation is initiated in decision, Serving RNC sends radio link reconfiguration for base station, Target cell place and prepares message, and sends Radio Resource control physical channel reconfiguration message to UE.At this moment, begin to carry out direct-cut operation, user's MAC-hs entity in the base station, place, Serving RNC reset source sub-district with all data in buffer deletions of this user, comprises user's MAC-hs PDU (protocol Data Unit) in the data of deletion.Meanwhile, the flow control unit of MAC-hs begins the PDU to the MAC-d of Serving RNC request MAC-d in the base station, Target cell place, and the MAC-d PDU of request is transferred to the user.Switch the back as the right figure among Fig. 1, the base station at user and Target cell place connects.
From above-described switching flow as can be seen, the data that are buffered in source cell base station before the switching are deleted, the data that are placed among the HARQ buffer are also deleted, and the MAC-dPDU of target cell base station request is new data, if deleted user data is the business that possesses high-rise retransmission mechanism, then deleted data can not be recovered by the base station, can only retransmit by high level to recover; If deleted user data is the business that does not possess high-rise retransmission mechanism, then deleted data just can not have been recovered.
For the business that possesses high-rise retransmission mechanism, when rlc layer can not obtain UE to the affirmation of this part data of source cell base station deletion, rlc layer will retransmit these deleted data by target cell base station, because the transmission delay of data retransmission is bigger, makes user's experience relatively poor; And, give the base station at RNC with these data retransmissions, the base station is given these transfer of data in user's the process, owing to reasons such as data queue and scheduling, may cause some data can not send to the user timely, thereby make the user can think that some data still correctly do not receive by mistake, cause the user in the report cycle of receiving status information feedback, constantly to repeat to report the indication information that does not receive to RNC, finally cause RNC repeatedly to retransmit the data that sent to target cell base station, bring many invalid re-transmission phenomenons to RNC, the Iub transmission and the transmission bandwidth of eating dishes without rice or wine have been wasted, and the propagation delay time of having aggravated user data, when the data volume of source cell base station deletion was very big, the loss that causes was also bigger.
Because in the present communication system, real time business generally all is configured to not have the rlc layer retransmission features, like this, can cause service disconnection in handoff procedure, makes user's experience relatively poor equally.
Summary of the invention
The objective of the invention is to, a kind of DSCH Downlink Shared Channel changing method is provided, by carry out the DSCH Downlink Shared Channel switching the user before, source cell base station preferentially sends this user service data, the Iub transmission and the transmission bandwidth of eating dishes without rice or wine have been saved, reduce the propagation delay time of user data, effectively guaranteed the business continuance in the handoff procedure, improved user experience.
For achieving the above object, a kind of DSCH Downlink Shared Channel changing method provided by the invention comprises:
A, radio network controller issue the information of the described user service data of preferential transmission to described user's source cell base station before definite user need carry out the DSCH Downlink Shared Channel switching and start DSCH Downlink Shared Channel switching;
B, source cell base station be according to the information of the described user service data of described preferential transmission, carries out its described user service data that receives preferentially being sent before DSCH Downlink Shared Channel switches described user.
The source cell base station that described DSCH Downlink Shared Channel switches is different with target cell base station.
Radio network controller is specially to the step that described user's source cell base station issues the information of the described user service data of preferential transmission among the described step a:
Radio network controller is configured to the dispatching priority of user described in the source cell base station the highest.
Described step b specifically comprises:
B1, source cell base station are before described user carries out the DSCH Downlink Shared Channel switching, and the maximum transmission rate that allows according to the highest dispatching priority, employing sends the described user service data of storing in its buffer memory.
Radio network controller specifically comprises to the step that described user's source cell base station issues the information of the described user service data of preferential transmission among the described step a:
A1, radio network controller send described user's DSCH Downlink Shared Channel indication message by signaling to source cell base station; Perhaps,
A2, radio network controller send described user's DSCH Downlink Shared Channel indication message by business data frame to source cell base station.
Radio network controller is specially to the step that source cell base station sends described user's DSCH Downlink Shared Channel indication message by business data frame among the described step a2:
Radio network controller is carried on described DSCH Downlink Shared Channel indication message in the idle Spare field of high speed downlink shared channel HS-DSCH data frames structure and sends to source cell base station.
Described step b specifically comprises:
B2, source cell base station are configured to described user's dispatching priority the highest according to described user's DSCH Downlink Shared Channel indication message of its reception;
B3, source cell base station are before described user carries out the DSCH Downlink Shared Channel switching, and the maximum transmission rate that allows according to the highest dispatching priority, employing sends the described user service data of storing in its buffer memory.
Described step b1 or b3 specifically comprise:
Source cell base station has with what store in its buffer memory that the user service data of high dispatching priority is dispatched in the intervention schedule formation, and adopts the maximum transmission rate that allows to send the described user service data of storing in the described intervention schedule formation.
Described step b comprises:
Source cell base station is according to the information of the described user service data of preferential transmission of its reception, when receiving the next described user's of radio network controller transmission business datum, described user's business datum is not carried out caching process, directly described business datum is sent to the user.
Described method also comprises:
C, radio network controller transfer to target cell base station with described user service data in the predetermined transmission cycle that starts before switching.
The described user service data that radio network controller transfers to target cell base station among the described step c does not carry the information of the described user service data of preferential transmission.
Description by technique scheme as can be known, RNC (radio network controller) is by before carrying out the DSCH Downlink Shared Channel switching the user, send the preferential information that sends user service data to source cell base station, make source cell base station can know that the user need switch, source cell base station this user service data by storing in its buffer memory of preferential transmission, and adopt to receive-＞this user's that the pattern that sends is come the RNC transmission business datum buffer memory not, directly send, for the business that possesses high-rise retransmission mechanism, effectively avoid RNC to retransmit the process of business datum, thereby also just avoided the process of the invalid re-transmission of RNC; For the business that does not possess high-rise retransmission mechanism, effectively avoided the phenomenon of the service disconnection that causes because of service data loss; In the predetermined transmission cycle of RNC among the present invention before switching, by with this user's business data transmission to target cell base station, further avoided RNC to retransmit the process of business datum and the phenomenon of service disconnection; Thereby realized the saving Iub transmission and the transmission bandwidth of eating dishes without rice or wine by technical scheme provided by the invention, reduced the propagation delay time of user data, effectively guaranteed the business continuance in the handoff procedure, improved the purpose of user experience.
Description of drawings
Fig. 1 be in the HSDPA system between the base station sub-district switch schematic diagram;
Fig. 2 is the DSCH Downlink Shared Channel changing method schematic diagram of the embodiment of the invention;
Fig. 3 is the DSCH Downlink Shared Channel changing method flow chart of method two in the embodiment of the invention;
Fig. 4 is provided with the HS-DSCH data frame structure schematic diagram that user's DSCH Downlink Shared Channel switches indicating bit in the embodiment of the invention.
Embodiment
Core of the present invention is: RNC (radio network controller) is before definite user need carry out the DSCH Downlink Shared Channel switching and start DSCH Downlink Shared Channel switching, issue the information of preferential this user service data of transmission to this user's source cell base station, source cell base station is according to the preferential information that sends this user service data, before this user carries out the DSCH Downlink Shared Channel switching, its this user service data that receives is preferentially sent.
Based on core concept of the present invention technical scheme provided by the invention is further described below.
RNC among the present invention need carry out DSCH Downlink Shared Channel definite user and switch when switching as the DSCH Downlink Shared Channel in the HSDPA system, the information that preferentially sends this user service data should be issued to this user's source cell base station.The DSCH Downlink Shared Channel here switches to: switch the DSCH Downlink Shared Channel sub-district of striding the base station, and promptly switch the sub-district between the DSCH Downlink Shared Channel base station, and source cell base station and target cell base station can be among the same RNC, also can be in the different RNCs.
Because the sub-district switches that the 1D event report that is by reporting of user starts between the DSCH Downlink Shared Channel base station among the HSDPA, so, RNC can determine whether the user needs to carry out sub-district switching between the DSCH Downlink Shared Channel base station according to the 1D event report of its reporting of user that receives.
RNC can receive user's 1D event report, and definite user need carry out between the DSCH Downlink Shared Channel base station after the sub-district switches, keep one section lag time, then, just start sub-district switching between the DSCH Downlink Shared Channel base station, in this section lag time, the present invention should make this user's source cell base station as early as possible this user's business datum is sent to this user, to avoid high-rise retransmission processes, perhaps service disconnection phenomenon.
RNC should be with preferentially sending the source cell base station of the message transmission of this user service data to this user, with the notification source cell base station after receiving user's 1D event report.The preferential information that sends this user service data can show as the form of dispatching priority of users in the RNC source of configuration cell base station, also can show as sub-district indication message between user's DSCH Downlink Shared Channel base station is set.No matter preferentially send this user service data information the form of expression how, this user's source cell base station is when receiving the information of preferential this user service data of transmission that RNC issues, should be as early as possible this user's of its reception business datum be sent to the user, this user's of receiving of source cell base station business datum can comprise two layers of meaning simultaneously here: one, this user's who stores in the source cell base station buffer memory business datum.Two, after this user's of in sending buffer memory, storing of source cell base station the business datum, this user's who receives from RNC business datum again.
Business datum for this user who stores in the source cell base station buffer memory, source cell base station can be according to this user's the highest dispatching priority, the maximum transmission rate that adopt to allow is sent to this user with this user's of storing in its buffer memory business datum, concrete process of transmitting can be stored in the intervention schedule formation according to user's the highest dispatching priority business datum with this user of storing in its buffer memory for: source cell base station, adopt the maximum transmission rate that allows that the business datum in the intervention schedule formation is sent to the user then, source cell base station is in urgent transmit status in the above-mentioned process of transmitting.
After this user's that source cell base station is stored in sending buffer memory the business datum, for newly from RNC business datum reception, that be not stored in this user in its buffer memory, then need not carry out under the situation of buffer memory, directly the business datum with this user is sent to the user, promptly adopt to receive-＞mode that sends handles newly this user's who receives from RNC business datum.At this moment, source cell base station is in preferential transmit status.
RNC can start before switch the sub-district between the DSCH Downlink Shared Channel base station in several transmission cycles, no longer the user's that needs are switched business datum is sent to this user's source cell base station, but be sent to this user's target cell base station, and the business datum that is sent to this user of target cell base station do not need target cell base station preferentially to send, as the business datum that is sent to this user of target cell base station is not carried urgent transmission indication etc.Like this, can avoid the user to switch to target cell base station after, source cell base station has further been avoided high-rise retransmission processes, perhaps the service disconnection phenomenon to the phenomenon that the user sends business datum.
Below in conjunction with accompanying drawing, with the information of preferential this user service data of transmission is that configure user priority, user's DSCH Downlink Shared Channel indication message are that example is elaborated to DSCH Downlink Shared Channel changing method of the present invention.
Method one: RNC makes source cell base station preferentially send the user's data business by reshuffle user's dispatching priority for source cell base station.
Carry out the user's that switch the sub-district between the DSCH Downlink Shared Channel base station real time business such as VOIP for needs, VP etc., the information of preferential this user service data of transmission when the highest dispatching priority of RNC and source cell base station reservation switches as sub-district between the DSCH Downlink Shared Channel base station, only be in promptly that the user in the cell switch process just can have the highest dispatching priority between the DSCH Downlink Shared Channel base station, RNC is configured to the highest dispatching priority with the user that the needs in the source cell base station carry out sub-district between the DSCH Downlink Shared Channel base station switching, and knows that this user is between the DSCH Downlink Shared Channel base station in the cell switch process.
In a single day source cell base station finds that the user is set to the highest dispatching priority by RNC, then enter urgent transmit status, this user's who stores in its buffer memory of source cell base station priority scheduling business datum is in urgent transmit queue, and the maximum transmission rate under the business datum in these urgent transmit queues satisfied condition by employing sends to the user as early as possible, makes the business datum no longer " buffer memory " with user of the highest dispatching priority.In accompanying drawing 2, according to normal process of transmitting, source cell base station should send the business datum of storing in its buffer memory order according to A, B, C, D, E, but, after the user of the business datum E correspondence of RNC in source cell base station is set to the highest dispatching priority, source cell base station enters urgent transmit status, business datum E is deposited in the urgent transmit queue, and preferentially be sent to corresponding user.After source cell base station this user's in its buffer memory business datum is sent completely, enter preferential transmit status, when receiving this next user of RNC transmission business datum X, in the time cycle that can send the soonest, business datum X is sent to this user, just say no business datum X and carry out buffer memory, directly be sent to this user.
When switch the sub-district between execution DSCH Downlink Shared Channel base station, the time that switch the sub-district between RNC control DSCH Downlink Shared Channel base station, like this, RNC is specifying the predetermined transmission cycle of sub-district before switching time between the DSCH Downlink Shared Channel base station, preceding 1 or 2 transmission cycle as sub-district switching time between the DSCH Downlink Shared Channel base station, RNC will no longer send to this user's business datum user's source cell base station, but send to user's target cell base station, carry out business datum by target cell base station and send.When RNC sent to user's target cell base station with this user's business datum, RNC did not need the dispatching priority of this user in the target cell base station to be set to the highest.
Method one does not need present existing protocol is made amendment, and that can realize real time business when switch sub-district between the DSCH Downlink Shared Channel base station does not interrupt carrying.
Method two: RNC makes source cell base station preferentially send the user's data business, as shown in Figure 3 by issue user's DSCH Downlink Shared Channel indication message to source cell base station.
Among Fig. 3, report the 1D event report to RNC step 3-1, user.
At step 3-2, RNC receives the 1D event report of reporting of user and determines that the user need carry out after switch the sub-district between the DSCH Downlink Shared Channel base station, target cell base station to the user issues RL Reconfig Prepare (radio link reconfiguration preparation) message, and the while issues user's DSCH Downlink Shared Channel indication message to user's source cell base station, this user's DSCH Downlink Shared Channel indication message can transfer to source cell base station by the signaling message of RNC, also can together transfer to source cell base station with this user's business datum, accelerate scheduling with notification source cell base station pair and user's DSCH Downlink Shared Channel indication message corresponding service data, the preferential transmission.
The specific implementation that the signaling message of user's DSCH Downlink Shared Channel indication message by RNC is transferred to source cell base station comprises: increase new signaling, user's DSCH Downlink Shared Channel indication message is transferred to source cell base station by the signaling that increases newly; Perhaps utilize existing signaling,, indication information is transferred to source cell base station by in existing signaling, adding the message item of user's DSCH Downlink Shared Channel indication message.
User's DSCH Downlink Shared Channel indication message is as follows with the specific implementation that this user's business datum together transfers to source cell base station:
For the HSDPA system, RNC is with the business datum of HS-DSCH data frame structure to the base station transmits user by Iub interface, therefore, can in existing HS-DSCH data frame structure, utilize existing idle bit (bit) position to carry user's DSCH Downlink Shared Channel indication message.
HS-DSCH data frame structure as shown in Figure 4 is HO (Handover switches) position with one of them Spare (free time) Field Definition, and promptly user's DSCH Downlink Shared Channel switches indicating bit, and this HO position can only account for a bit.We can also define when this HO position is set to 1, represent that this user is about to initiate DSCH Downlink Shared Channel and switches.After the HSDPA direct-cut operation is initiated in RNC decision, when the HS-DSCH Frame that sends to source cell base station about this user, need the HO position in this user's the data frame structure of all business datums to be set to 1.Even there is the business datum of a plurality of internal schedule priority in this user, the HO position in the HS-DSCH Frame of all priority services also all should be set to 1.
Like this, after source cell base station is received user's business datum,, confirm that then this user is about to take place DSCH Downlink Shared Channel and switches if the HO position in the Frame is set to 1.
After receiving the RL Reconfig Prepare message that RNC issues to step 3-3, target cell base station, prepare this user HS-DSCH related resource, and RL Reconfig Ready message is back to RNC.Simultaneously, source cell base station is set to the highest dispatching priority according to the user of user's DSCH Downlink Shared Channel indication message correspondence, and the business datum of having stored in its buffer memory is carried out intervention schedule according to the highest dispatching priority, user's corresponding service storage that will have the highest dispatching priority and is sent to the user with the business datum in the intervention schedule formation in the intervention schedule formation.
To step 3-4, source cell base station after the business datum in the intervention schedule formation is sent completely, pattern according to " receive-＞send ", this user's that the RNC transmission is next business datum is not stored transmission, that is to say, source cell base station receives from sending immediately after this user's of RNC the business datum, does not carry out buffer memory, delay.
The reception of business datum process neutralization procedure 3-4 in the transmission intervention schedule formation of step 3-3-＞process of transmitting in, if there is the business datum of a plurality of internal schedule priority in this user, then source cell base station should be carried out the data transmission according to this user's internal schedule priority.
Receiving the RL Reconfig Ready message that the target cell base station transmission comes at step 3-4, RNC, dispose the activationary time T that gives in user's the radio bearer reconfiguration message according to it, the timing length that timer is set is the difference of T and M, wherein M is the duration of predetermined transmission cycle, and M can be according to the working condition setting of real system.RNC starts timer.
When timer was not overtime, to source cell base station, and source cell base station this user's that the new transmission of its RNC that receives is come business datum directly transferred to the user to RNC, do not carry out buffer memory with this user's real time business transfer of data.
Issue RL Reconfig Commit (Radio LinkReconfiguration Commit radio link reconfiguration is enabled) message at step 3-4, RNC to target cell base station, issue RB Reconfig (Radio Bearer Reconfiguration radio bearer is reshuffled) message to the user.
When timer expiry, this user's real time business data are sent to this user's target cell base station to step 3-5, RNC.Like this, guaranteed several frame times of RNC before activationary time starts, the several transmission cycles before promptly switching are given target cell base station with this user's real time business data passes.The real time business data that RNC sends to this user of target cell base station do not carry user's DSCH Downlink Shared Channel indication message.
Will be to step 3-6, target cell base station from this user's of RNC real time business transfer of data to the user.
After receiving the next business datum of target cell base station transmission, return RB Reconfig Complete (radio bearer is reshuffled and finished) message to step 3-7, user to RNC.RNC receives finishing switching after this message, and system restoration normal handling flow process is carried out work, according to its predetermined scheduling strategy user's real time business data is sent to the user as base station in service sector.
Method two need carry out modification in a small amount to present existing protocol, promptly needs to expand the signaling message of RNC, makes the signaling message of RNC can carry user's DSCH Downlink Shared Channel indication message.After agreement was carried out minor modifications, that can realize real time business when switch sub-district between the DSCH Downlink Shared Channel base station did not interrupt carrying.
Though described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, and the claim of application documents of the present invention comprises these distortion and variation.
Claims (11)
1, a kind of changing method of DSCH Downlink Shared Channel is characterized in that, comprising:
A, radio network controller issue the information of the described user service data of preferential transmission to described user's source cell base station before definite user need carry out the DSCH Downlink Shared Channel switching and start DSCH Downlink Shared Channel switching;
B, source cell base station be according to the information of the described user service data of described preferential transmission, carries out its described user service data that receives preferentially being sent before DSCH Downlink Shared Channel switches described user.
2, the changing method of a kind of DSCH Downlink Shared Channel as claimed in claim 1 is characterized in that, the source cell base station that described DSCH Downlink Shared Channel switches is different with target cell base station.
3, the changing method of a kind of DSCH Downlink Shared Channel as claimed in claim 1 is characterized in that, radio network controller is specially to the step that described user's source cell base station issues the information of the described user service data of preferential transmission among the described step a:
Radio network controller is configured to the dispatching priority of user described in the source cell base station the highest.
4, the changing method of a kind of DSCH Downlink Shared Channel as claimed in claim 3 is characterized in that, described step b specifically comprises:
B1, source cell base station are before described user carries out the DSCH Downlink Shared Channel switching, and the maximum transmission rate that allows according to the highest dispatching priority, employing sends the described user service data of storing in its buffer memory.
5, the changing method of a kind of DSCH Downlink Shared Channel as claimed in claim 1 is characterized in that, radio network controller specifically comprises to the step that described user's source cell base station issues the information of the described user service data of preferential transmission among the described step a:
A1, radio network controller send described user's DSCH Downlink Shared Channel indication message by signaling to source cell base station; Perhaps,
A2, radio network controller send described user's DSCH Downlink Shared Channel indication message by business data frame to source cell base station.
6, the changing method of a kind of DSCH Downlink Shared Channel as claimed in claim 5, it is characterized in that radio network controller is specially to the step that source cell base station sends described user's DSCH Downlink Shared Channel indication message by business data frame among the described step a2:
Radio network controller is carried on described DSCH Downlink Shared Channel indication message in the idle Spare field of high speed downlink shared channel HS-DSCH data frames structure and sends to source cell base station.
7, the changing method of a kind of DSCH Downlink Shared Channel as claimed in claim 5 is characterized in that, described step b specifically comprises:
B2, source cell base station are configured to described user's dispatching priority the highest according to described user's DSCH Downlink Shared Channel indication message of its reception;
B3, source cell base station are before described user carries out the DSCH Downlink Shared Channel switching, and the maximum transmission rate that allows according to the highest dispatching priority, employing sends the described user service data of storing in its buffer memory.
As the changing method of claim 4 or 7 described a kind of DSCH Downlink Shared Channels, it is characterized in that 8, described step b1 or step b3 specifically comprise:
Source cell base station has with what store in its buffer memory that the user service data of high dispatching priority is dispatched in the intervention schedule formation, and adopts the maximum transmission rate that allows to send the described user service data of storing in the described intervention schedule formation.
9, the changing method of a kind of DSCH Downlink Shared Channel as claimed in claim 1 is characterized in that, described step b comprises:
Source cell base station is according to the information of the described user service data of preferential transmission of its reception, when receiving the next described user's of radio network controller transmission business datum, described user's business datum is not carried out caching process, directly described business datum is sent to the user.
As the changing method of claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 9 described a kind of DSCH Downlink Shared Channels, it is characterized in that 10, described method also comprises:
C, radio network controller transfer to target cell base station with described user service data in the predetermined transmission cycle that starts before switching.
11, the changing method of a kind of DSCH Downlink Shared Channel as claimed in claim 10, it is characterized in that the described user service data that radio network controller transfers to target cell base station among the described step c does not carry the information of the described user service data of preferential transmission.
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| CNA2006100002178A CN1867184A (en) | 2005-11-22 | 2006-01-06 | Downlink shared channel switching method |
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| CNA2006100002178A CN1867184A (en) | 2005-11-22 | 2006-01-06 | Downlink shared channel switching method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101562848B (en) * | 2008-04-18 | 2011-10-05 | 华为技术有限公司 | Method and device for reselecting carrier frequency |
| CN101330444B (en) * | 2007-06-19 | 2011-12-07 | 中兴通讯股份有限公司 | Control method and apparatus for upstream data transmission of long-term evolvement system |
| WO2014032277A1 (en) * | 2012-08-31 | 2014-03-06 | 华为技术有限公司 | Scheduling method, base station and base station controller |
| CN105684512A (en) * | 2013-08-09 | 2016-06-15 | 瑞典爱立信有限公司 | Apparatus and method for improving handover in a global system for mobile communications |
| CN109495129A (en) * | 2018-12-28 | 2019-03-19 | 四川安迪科技实业有限公司 | A kind of spread spectrum multiple lossless switching method based on satellite communication |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101330444B (en) * | 2007-06-19 | 2011-12-07 | 中兴通讯股份有限公司 | Control method and apparatus for upstream data transmission of long-term evolvement system |
| CN101562848B (en) * | 2008-04-18 | 2011-10-05 | 华为技术有限公司 | Method and device for reselecting carrier frequency |
| WO2014032277A1 (en) * | 2012-08-31 | 2014-03-06 | 华为技术有限公司 | Scheduling method, base station and base station controller |
| CN103843435A (en) * | 2012-08-31 | 2014-06-04 | 华为技术有限公司 | Scheduling method, base station and base station controller |
| EP2882247A1 (en) * | 2012-08-31 | 2015-06-10 | Huawei Technologies Co., Ltd. | Scheduling method, base station and base station controller |
| EP2882247A4 (en) * | 2012-08-31 | 2015-07-15 | Huawei Tech Co Ltd | Scheduling method, base station and base station controller |
| CN105684512A (en) * | 2013-08-09 | 2016-06-15 | 瑞典爱立信有限公司 | Apparatus and method for improving handover in a global system for mobile communications |
| CN105684512B (en) * | 2013-08-09 | 2019-05-31 | 瑞典爱立信有限公司 | Device and method for improving the switching in global system for mobile communications |
| US10397839B2 (en) | 2013-08-09 | 2019-08-27 | Telefonaktiebolaget Lm Ericsson ( Publ) | Apparatus and method for improving handover in a global system for mobile communications |
| US10813024B2 (en) | 2013-08-09 | 2020-10-20 | Telefonaktiebolaget Lm Ericsson (Publ) | Apparatus and method for improving handover in a global system for mobile communications |
| CN109495129A (en) * | 2018-12-28 | 2019-03-19 | 四川安迪科技实业有限公司 | A kind of spread spectrum multiple lossless switching method based on satellite communication |
| CN109495129B (en) * | 2018-12-28 | 2020-11-03 | 四川安迪科技实业有限公司 | Spread spectrum multiple lossless switching method based on satellite communication |
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