Background technology
Stipulate in the agreement at present; Have four kinds of states under the connection mode of terminal; Cell private channel (CELLDedicated Channel, CELL_DCH) state, cell forward access channel (CELL ForwardAccess Channel, CELL_FACH) state, cell paging channel (CELL Paging Channel; CELL_PCH) state and UTRAN Acceditation Area PCH (UTRAN Registration Area PagingChannel, URA_PCH) state.Under the CELL_DCH state; For terminal distribution dedicated channel or use high speed downlink packet to insert (High speed Downlink Packet Access; HSDPA) and high speed uplink packet insert that (High speed Uplink Packet Access, correlated channels HSUPA) transmits data with transmission mechanism.At the CELL_FACH state, be not the terminal distribution dedicated channel, descending monitoring FACH channel receives low volume data, up use RACH Channel Transmission low volume data.Because the physical resource that FACH and RACH channel are shone upon restriction is so under this state, message transmission rate is lower.Under the CELL_FACH state, if in a period of time, the terminal does not have transfer of data, then gets into the CELL_PCH state.Under the CELL_PCH state, can not send data, only can respond paging or initiate paging, under this state, network is known residing sub-district, terminal.Under the URA_PCH state, can not send data, only can respond paging or initiate paging, under this state, network is known the residing URA in terminal.
To TD SDMA (TD-SCDMA) system, in 3GPP Release8, introduced the CELL_FACH enhanced characteristic.In the CELL_FACH enhanced characteristic, correlated channels and the transmission mechanism of HSDPA and HSUPA has been incorporated into the CELL_FACH state.Like this; Under the CELL_FACH state; Downlink data is mapped to high speed descending sharing channel (High speed Downlink Share Channel; HS-DSCH) on, HS-DSCH is mapped to the high-speed downstream Physical Shared Channel, and (High speed DownlinkPhysical Share Channel HS-PDSCH) goes up transmission.Upstream data be mapped to strengthen dedicated channel (Enhanced Dedicated Channel, E-DCH) on, E-DCH is mapped to E-DCH physical uplink channel, and (E-DCH Physical Uplink Channel E-PUCH) goes up transmission.Transmission rate through signaling under such data transfer mode raising CELL_FACH state reduces the signaling propagation delay time.
The channel relevant for the HSUPA that introduces in the CELL_FACH enhanced characteristic comprises E-DCH RACH (E-DCH Random Access Uplink Control Channel; E-RUCCH) and two up channels of E-PUCH; And E-DCH absolute grant channel (E-DCH Absolute GrantChannel; E-AGCH) and E-DCH HARQ just answer indicating channel (E-DCH HARQ IndicatorChannel, E-HICH) two down channels.Network carries the configuration parameter of these channels through broadcasting, comprises the time slot of E-RUCCH, E-AGCH and E-HICH, code channel information etc.If the terminal has the ability that CELL_FACH strengthens, receive the above-mentioned relevant channel of HSUPA of parameter configuration that broadcasting is carried according to broadcasting afterwards.Afterwards variable COMMON_E_DCH_TRANSMISSION is changed to TRUE and representes this state.After this, as shown in Figure 1 if there is transmitting uplink data at the terminal, flow process is following:
Step 1: having uplink strengthening data etc. to be sent in the terminal buffers is total E-DCH buffer state (ToalE-DCH Buffer Status; TEBS) greater than zero; The terminal on E-RUCCH, send schedule information (Scheduling Information, SI), the request scheduling resource;
Step 2: base station (Node B) carries out scheduling of resource according to the SI that receives, and on E-AGCH, sends resource authorization information;
Step 3: the terminal is according to the resource authorization information of receiving; Strengthen transformat combination (E-TFC) and select, selects suitable transmission block big or small (Transport Block Size, TBS) and modulation system; Encode afterwards, modulate, on E-PUCH, send uplink strengthening data;
Step 4:Node B is after E-PUCH receives uplink strengthening data; Carry out decoding processing; According to CRC (Cyclical Redundancy Check; CRC) verification obtains ACK (affirmation)/NACK (non-affirmation) information, feeds back to this terminal on the E-HICH with being mapped to after this information coding.
For step 1, the networking side has been terminal configuration timer T-RUCCH sum counter N-RUCCH.If send after the E-RUCCH at the terminal, T-RUCCH does not receive E-AGCH in the time, resend E-RUCCH so, and restarts timer T-RUCCH.The terminal is sent E-RUCCH number and is N-RUCCH to the maximum.
Introduce the periodic cell update mechanism under the CELL_FACH state below.
Regulation is initiated cell updating course and is mainly contained following several kinds of situation in the present standard:
First kind: under CELL_PCH state or URA_PCH state, need initiate cell update and inform network when the terminal gets into service area once more;
Second kind:, need to initiate cell update and inform network when affirmation mode Radio Link control (RLC) entity generation fatal error;
The third: at the CELL_FACH state, under CELL_PCH state or the URA_PCH state, the situation of periodic cell update process informing network institute persistent district need be initiated in the terminal;
The 4th kind: after the district reselecting, the terminal need be initiated cell updating course and informed the current resident sub-district of the network terminal;
The 5th kind:, need initiate cell updating course when the terminal detects Radio Link Failure at the CELL_DCH state;
The 6th kind: under CELL_PCH state or URA_PCH state, terminal response paging or have the data transmission need to initiate cell update request network to forward the CELL_FACH state to.
For the third periodic cell update, it is generally acknowledged that when the terminal was in the CELL_FACH state, data activity was not frequent.In a period of time, if the terminal does not have upstream data to send, network side just do not know the terminal the situation of resident network, so need terminal periodic property to send information to network.When being in the CELL_FACH state, just need the periodic cell update process.The basic procedure of cell update is as shown in Figure 2.At first cell update (CELL UPDATE) message is sent at the terminal, and the feedback cell update was confirmed (CELL UPDATE CONFIRM) message after network was received CELLUPDATE message.
Network is that the periodic cell update at terminal has disposed a timer T305.When entering into the CELL_FACH state, this timer starts.When receiving CELL UPDATE CONFIRM message, this timer is restarted at the terminal.When the terminal enters into the CELL_DCH state, stop this timer.Work as timer expiry, and the terminal is in service area, will initiates cell updating course so, promptly request resource is sent CELLUPDATE message.
In realizing process of the present invention, the inventor finds to exist in the prior art following technical problem:
Can find out that from top introduction network side just knows that this terminal exists in the network after receiving the upstream data that sends at the terminal, has also just reached the purpose of periodic cell update to upstream data transmit mechanism and periodic cell update the CELL_FACH enhancing.And in the prior art in the upstream data transmission flow, if the periodic cell update trigger condition also satisfies, periodic cell update is still initiated at the terminal, will cause extra signaling consumption.
Embodiment
In order to save the signaling consumption of communication system; The embodiment of the invention provides a kind of processing periodic cell update; In this method; The terminal is when confirming to satisfy the periodic cell update condition, if the transmitting uplink data flow process has been initiated at terminal self and this transmitting uplink data flow process does not finish, does not then initiate periodic cell update to network side.
Referring to Fig. 3, the processing periodic cell update that the embodiment of the invention provides specifically may further comprise the steps:
Step 30: the periodic cell update condition is confirmed to satisfy in the terminal need send cell update message;
Step 31: the terminal confirms self whether to have initiated the transmitting uplink data flow process and this transmitting uplink data flow process does not finish;
Step 32: the terminal is then cancelled to network side and is sent cell update message if confirm self to have initiated the transmitting uplink data flow process and this transmitting uplink data flow process when not finishing, otherwise, send cell update message to network side.
In the step 30, the periodic cell update condition comprises: it is that timer expiry, the terminal that the periodic cell update configuration is carried out at the terminal is positioned at service area that the terminal is in CELL_FACH state, network side.
In the step 31, the terminal confirms self whether to have initiated the transmitting uplink data flow process and this transmitting uplink data flow process does not finish, and its concrete implementation can have following five kinds of embodiment:
Embodiment one:
In the present embodiment; The terminal there being upstream data to send after the scheduling of resource request is sent in the base station; SOT state of termination flag is set to predefined first identifier; And when in setting-up time, not receiving the resource authorization information of sending the base station, SOT state of termination flag is set to predefined second identifier.Shown in Fig. 4 A, idiographic flow is following:
Step 401: the TEBS value at terminal is greater than 0, and defining upstream data needs to send;
Step 402: the scheduling of resource request that comprises SI is sent through E-RUCCH in the terminal to the base station;
Step 403: SOT state of termination flag COMMON_E_DCH_TRANSMISSION is set to TRUE;
Step 404: the number of times that terminal judges is sent said scheduling of resource request reaches the scheduling of resource request number of times threshold value N-RUCCH that network side is provided with in advance, starts the timer that is provided with in advance, and timer length can multiply by the time span of T-RUCCH for N-RUCCH; When this timer expiry, do not receive the resource authorization information of sending the base station yet, COMMON_E_DCH_TRANSMISSION is set to FALSE,, and to network side transmission cell update message, this transmitting uplink data flow process finishes.
When satisfying the periodic cell update condition at any time; The value of COMMON_E_DCH_TRANSMISSION is read at the terminal; If value is TRUE, then do not send cell update message, and to restart network side be the timer that the periodic cell update configuration is carried out at the terminal to network side.If value is FALSE, then send cell update message to network side.
Certainly, the terminal can also be after sending the scheduling of resource request to the base station, is provided with one and is used to represent that the terminal initiated the sign of transmitting uplink data flow process, when in setting-up time, not receiving the resource authorization information of sending the base station, should identify deletion.Cell update message if this sign exists, is not then sent to network side in the terminal when confirming to satisfy the periodic cell update condition, and to restart network side be the timer that the periodic cell update configuration is carried out at the terminal.If this sign does not exist, then send cell update message to network side.
Embodiment two:
In the present embodiment; The terminal there being upstream data to send after the scheduling of resource request is sent in the base station; SOT state of termination flag is set to predefined first identifier; And send upstream data to the base station after in setting-up time, receiving the resource authorization information of sending the base station, after data were sent completion, SOT state of termination flag was set to predefined second identifier.Shown in Fig. 4 B, idiographic flow is following:
Step 411: the TEBS value at terminal is greater than 0, and defining upstream data needs to send;
Step 412: the scheduling of resource request that comprises SI is sent through E-RUCCH in the terminal to the base station;
Step 413: SOT state of termination flag COMMON_E_DCH_TRANSMISSION is set to TRUE;
Step 414: scheduling of resource is carried out according to the SI that receives in the base station, and sends resource authorization information through E-AGCH to the terminal;
Step 415: the terminal is carried out E-TFC and is selected according to the resource authorization information of receiving, selects suitable TBS and modulation system, encodes afterwards, modulates, and sends upstream data through E-PUCH to the base station;
Step 416: FP (FrameProtocol is passed through after correctly receiving the upstream data of sending at the terminal in the base station; Frame Protocol) frame is sent to radio network controller (Radio Network Controller with data; RNC), the sign E-RNTI of carried terminal in the FP frame;
After step 417:RNC receives the FP frame, according to the terminal iidentification E-RNTI that carries in this FP frame, confirm that this terminal and network are in connection status, promptly this terminal exists in the network, thereby has accomplished the function of periodic cell update;
Step 418: the base station is after E-PUCH receives upstream data; Carry out decoding processing; According to CRC (Cyclical Redundancy Check, CRC) verification obtains ACK (affirmation)/NACK (non-affirmation) information, feeds back to the terminal on the E-HICH with being mapped to after this information coding;
Step 419: whether terminal judges TEBS value equals 0, and promptly whether upstream data sends completion, and whether does not have MAC PDU and wait for re-transmission, if then COMMON_E_DCH_TRANSMISSION is set to FALSE.
When satisfying the periodic cell update condition at any time; The value of COMMON_E_DCH_TRANSMISSION is read at the terminal; If value is TRUE, then do not send cell update message, and to restart network side be the timer that the periodic cell update configuration is carried out at the terminal to network side.If value is FALSE, then send cell update message to network side,
Certainly, the terminal can also be after sending the scheduling of resource request to the base station, is provided with one and is used to represent that the terminal initiated the sign of transmitting uplink data flow process, sends at upstream data and accomplish and do not have MAC PDU and wait for and should identify deletion when retransmitting.Cell update message if this sign exists, is not then sent to network side in the terminal when confirming to satisfy the periodic cell update condition, and to restart network side be the timer that the periodic cell update configuration is carried out at the terminal.If this sign does not exist, then send cell update message to network side.
Embodiment three:
In the present embodiment; The terminal is having upstream data need send after the scheduling of resource request is sent in the base station; When receiving the resource authorization information of sending the base station; SOT state of termination flag is set to predefined first identifier, and after data were sent completion, SOT state of termination flag was set to predefined second identifier.Shown in Fig. 4 C, idiographic flow is following:
Step 421: the TEBS value at terminal is greater than 0, and defining upstream data needs to send;
Step 422: the scheduling of resource request that comprises SI is sent through E-RUCCH in the terminal to the base station;
Step 423: scheduling of resource is carried out according to the SI that receives in the base station, and sends resource authorization information through E-AGCH to the terminal;
Step 424: the resource authorization information that the terminal receives, SOT state of termination flag COMMON_E_DCH_TRANSMISSION is set to TRUE;
Step 425: the E-TFC selection is carried out at the terminal, selects suitable TBS and modulation system, encodes afterwards, modulates, and sends upstream data through E-PUCH to the base station;
Step 426: FP (FrameProtocol is passed through after correctly receiving the upstream data of sending at the terminal in the base station; Frame Protocol) frame is sent to radio network controller (Radio Network Controller with data; RNC), the sign E-RNTI of carried terminal in the FP frame;
After step 427:RNC receives the FP frame, according to the terminal iidentification E-RNTI that carries in this FP frame, confirm that this terminal and network are in connection status, promptly this terminal exists in the network, thereby has accomplished the function of periodic cell update;
Step 428: the base station is after E-PUCH receives upstream data; Carry out decoding processing; According to CRC (Cyclical Redundancy Check, CRC) verification obtains ACK (affirmation)/NACK (non-affirmation) information, feeds back to the terminal on the E-HICH with being mapped to after this information coding;
Step 429: whether terminal judges TEBS value equals 0, and promptly whether upstream data sends completion, and whether does not have MAC PDU and wait for re-transmission, if then COMMON_E_DCH_TRANSMISSION is set to FALSE.
When satisfying the periodic cell update condition at any time; The value of COMMON_E_DCH_TRANSMISSION is read at the terminal; If value is TRUE, then do not send cell update message, and to restart network side be the timer that the periodic cell update configuration is carried out at the terminal to network side.If value is FALSE, then send cell update message to network side.
Certainly, the terminal can also be after receiving the resource authorization information of sending the base station, is provided with one and is used to represent that the terminal initiated the sign of transmitting uplink data flow process, sends at upstream data and accomplish and do not have MACPDU and wait for and should identify deletion when retransmitting.Cell update message if this sign exists, is not then sent to network side in the terminal when confirming to satisfy the periodic cell update condition, and to restart network side be the timer that the periodic cell update configuration is carried out at the terminal.If this sign does not exist, then send cell update message to network side.
Embodiment four:
In the present embodiment, the terminal is after sending upstream data to the base station, and SOT state of termination flag is set to predefined first identifier, and after data were sent completion, SOT state of termination flag was set to predefined second identifier.Shown in Fig. 4 D, idiographic flow is following:
Step 431: the TEBS value at terminal is greater than 0, and defining upstream data needs to send;
Step 432: the scheduling of resource request that comprises SI is sent through E-RUCCH in the terminal to the base station;
Step 433: scheduling of resource is carried out according to the SI that receives in the base station, and sends resource authorization information through E-AGCH to the terminal;
Step 434: the resource authorization information that the terminal receives, carry out E-TFC and select, select suitable TBS and modulation system, encode afterwards, modulate, send upstream data through E-PUCH to the base station;
Step 435: terminal SOT state of termination flag COMMON_E_DCH_TRANSMISSION is set to TRUE;
Step 436: FP (FrameProtocol is passed through after correctly receiving the upstream data of sending at the terminal in the base station; Frame Protocol) frame is sent to radio network controller (Radio Network Controller with data; RNC), the sign E-RNTI of carried terminal in the FP frame;
After step 437:RNC receives the FP frame, according to the terminal iidentification E-RNTI that carries in this FP frame, confirm that this terminal and network are in connection status, promptly this terminal exists in the network, thereby has accomplished the function of periodic cell update;
Step 438: the base station is after E-PUCH receives upstream data; Carry out decoding processing; According to CRC (Cyclical Redundancy Check, CRC) verification obtains ACK (affirmation)/NACK (non-affirmation) information, feeds back to the terminal on the E-HICH with being mapped to after this information coding;
Step 439: whether terminal judges TEBS value equals 0, and promptly whether upstream data sends completion, and whether does not have MAC PDU and wait for re-transmission, if then COMMON_E_DCH_TRANSMISSION is set to FALSE.
When satisfying the periodic cell update condition at any time; The value of COMMON_E_DCH_TRANSMISSION is read at the terminal; If value is TRUE, then do not send cell update message, and to restart network side be the timer that the periodic cell update configuration is carried out at the terminal to network side.If value is FALSE, then send cell update message to network side.
Certainly, the terminal can also be after sending upstream data to the base station, is provided with one and is used to represent that the terminal initiated the sign of transmitting uplink data flow process, sends at upstream data and accomplish and do not have MAC PDU and wait for and should identify deletion when retransmitting.Cell update message if this sign exists, is not then sent to network side in the terminal when confirming to satisfy the periodic cell update condition, and to restart network side be the timer that the periodic cell update configuration is carried out at the terminal.If this sign does not exist, then send cell update message to network side.
Embodiment five:
Present embodiment and embodiment two~four are similar; Difference is; In the present embodiment base station after sending the scheduling of resource request, receive the resource authorization information of sending the base station after and after upstream data is sent in the base station, all COMMON_E_DCH_TRANSMISSION is set to TRUE.
Referring to Fig. 5, the embodiment of the invention also provides a kind of terminal, and this terminal comprises:
Confirm unit 50, be used for when satisfying the periodic cell update condition and need send cell update message, confirming whether this terminal has initiated the transmitting uplink data flow process and this transmitting uplink data flow process does not finish;
Decision unit 51, when being used for confirming in said definite unit that this terminal has been initiated transmitting uplink data flow process and this transmitting uplink data flow process and do not finished, cancellation is sent cell update message to network side.
This terminal also comprises:
Dispatch request unit 52 is used for sending the scheduling of resource request to the base station;
Information receiving unit 53 is used to receive the resource authorization information of sending the base station;
Data transmission unit 54 is used for sending upstream data to the base station;
State set unit 55; Be used in said dispatch request unit after the scheduling of resource request is sent in the base station; Or after said information receiving unit receives the resource authorization information of sending the base station; Or said data transmission unit is after upstream data is sent in the base station, and SOT state of termination flag is set to predefined first identifier;
Said definite unit 50 is used for:
When satisfying the periodic cell update condition, judge whether said SOT state of termination flag is said first identifier, if confirm that then the transmitting uplink data flow process has been initiated at this terminal and this transmitting uplink data flow process does not finish.
This terminal also comprises:
The first recovering state unit 56; Be used in said state set unit in said dispatch request unit after SOT state of termination flag is set to predefined first identifier after the scheduling of resource request is sent in the base station; Judge whether the number of times that sends said scheduling of resource request reaches the scheduling of resource request number of times threshold value that is provided with in advance; If then start the timer that is provided with in advance; If when said timer expiry, when this terminal did not receive the resource authorization information of sending said base station, then said SOT state of termination flag was set to predefined second identifier, and sent cell update message to network side.
This terminal further comprises:
The second recovering state unit 57; Be used for after said SOT state of termination flag is set to first identifier, judge whether upstream data sends completion, and whether do not have upstream data and wait for re-transmission; If then said SOT state of termination flag is set to predefined second identifier.
This terminal also comprises:
Timer restart unit 58 is used in said decision unit cancellation after network side sends cell update message, and restarting network side is the timer that periodic cell update is provided with.
To sum up, beneficial effect of the present invention comprises:
In the scheme that the embodiment of the invention provides; The terminal is when confirming to satisfy the periodic cell update condition; If self initiated the transmitting uplink data flow process and this transmitting uplink data flow process does not finish; Then terminal decision is not sent cell update message to network side, and to restart network side be the timer that the periodic cell update configuration is carried out at the terminal.Because in the transmitting uplink data flow process; Network side can confirm that this terminal is present in the network according to the upstream data that send at the terminal that receives; Thereby can reach the purpose of cell update; This moment, the periodic cell update condition was satisfied immediately also to network side transmission cell update message in the terminal, can save the signaling consumption of system effectively.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.