CN101594672B - Method, system and device for maintaining uplink synchronization and method for sending data - Google Patents

Method, system and device for maintaining uplink synchronization and method for sending data Download PDF

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CN101594672B
CN101594672B CN2008101140193A CN200810114019A CN101594672B CN 101594672 B CN101594672 B CN 101594672B CN 2008101140193 A CN2008101140193 A CN 2008101140193A CN 200810114019 A CN200810114019 A CN 200810114019A CN 101594672 B CN101594672 B CN 101594672B
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physical layer
control information
layer control
subscriber equipment
base station
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CN101594672A (en
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贾民丽
李晓卡
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Xiaomi Inc
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China Academy of Telecommunications Technology CATT
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Abstract

The invention relates to a wireless communication network, in particular to a method, a system and a device for maintaining uplink synchronization, aiming at solving the problem of initiatively facilitating user equipment to quickly re-establish uplink synchronization after a base station detects the uplink desynchronization of the user equipment under the state of enhanced CELL_FACH existing in the prior art. The method of the embodiment of the invention comprises the following steps: the base station sends first physical layer control information containing information informing the user equipment of establishing uplink synchronization to the user equipment through a first physical layer control channel; after receiving the first physical layer control information, the user equipment establishes uplink synchronization with the base station. After the user equipment successfully establishes uplink synchronization with the base station, second physical layer control information containing uplink synchronization verification information is sent to the base station through a second physical layer control channel. The method of the embodiment of the invention can facilitate the user equipment to quickly re-establish uplink synchronization, thus improving the reliability of uplink data transmission.

Description

The method of method, system, device and transmission data that a kind of maintaining uplink is synchronous
Technical field
The present invention relates to cordless communication network, the method for method, system, device and transmission data that particularly a kind of maintaining uplink is synchronous.
Background technology
HSDPA (High Speed DownlinkPacket Access at LCR-TDD (low spreading rate time division duplex); The high speed downlink packet access) introduced up HS-DSCH (High SpeedDownlink Shared Channel in; High speed descending sharing channel), HS-PDSCH (High Speed PhysicalDownlink Shared Channel high-speed downstream Physical Shared Channel), HS-SCCH (Shared ControlChannel for HS-DSCH; The shared control channel of HS-DSCH) and up HS-SICH (SharedInformation Channel for HS-DSCH, the shared information channel of HS-DSCH).
As shown in Figure 1, the step of carrying out transfer of data through top channel comprises:
Step 100, base station are sent schedule information through HS-SCCH to subscriber equipment, when wherein indication is sent data through HS-PDSCH subsequently in the schedule information, and information such as employed time-slot code channel.
Step 101, subscriber equipment at the appointed time receive data through HS-PDSCH according to the schedule information of receiving.
Step 102, subscriber equipment basis are to receiving data conditions; Carry out channel quality estimation, confirm the CQI (Channel Quality Indicator, channel quality indication) of HS-PDSCH; And, confirm feedback information ACK (confirming information) or NACK (NACK messages) according to decoded result to data.
Step 103, subscriber equipment send through HS-SICH CQI and the ACK/NACK information confirmed to the base station.
Suitable transformat is confirmed according to feedback information and CQI in step 104, base station, and through the control information that HS-SCCH sends subscriber equipment, subsequent step and step 100~step 103 is similar, repeats no more.
In above-mentioned steps, want to let the base station correctly obtain the feedback information of subscriber equipment, must guarantee that base station and subscriber equipment keep synchronously.
In the existing systems, whether connect, the connection status of subscriber equipment be divided into two big types with network according to subscriber equipment: idle (Idle) pattern be connected (Connected) pattern.Wherein connection mode is divided into CELL-DCH (cell private channel), CELL-FACH (cell forward access channel), CELL-PCH (cell paging channel), several kinds of states of URA-PCH (UTRAN Acceditation Area PCH) according to differences such as the physical channel kind of using, measurements again.
Using the HSDPA channel to replace FACH (forward access channel) channel to send downlink data under the CELL_FACH state, and the CELL-FACH under this state is being called enhancing CELL-FACH state with the downlink data peak rate under the raising CELL_FACH state.Can be for strengthening the subscriber equipment that has special-purpose terminal identification information (H-RNTI) under the CELL-FACH state through the base station that feeds back to of HS-SICH (the shared information channel of high speed descending sharing channel) channel transmitting channel mass measurement and data decode situation, to improve resource utilization.Therefore, strengthen under the CELL_FACH state, subscriber equipment need be in the uplink synchronous state when downlink data receiving carries out up feedback.
On the other hand, in order to improve resource utilization ratio, under enhancing CELL_FACH state, also allow the maintenance uplink synchronous that does not continue; Promptly allow subscriber equipment uplink loss when long-time free of data is sent; Carry out web page browsing when professional such as: subscriber equipment, opening behind the webpage during reading webpage, possibly not have data to send for a long time; In the case; If continue to keep synchronously, can cause resource waste, allow the subscriber equipment uplink loss in order to improve this situation of resource utilization.When subscriber equipment has new upstream data to send out or need carry out up feedback to new downlink data, need provide the timely notifying user equipment of a kind of mechanism to set up uplink synchronous so, guarantee the reliability of transmitting uplink data.
But also do not have at present a kind ofly strengthening the CELL_FACH state in the synchronous scheme of base station side maintaining uplink.Have only at present when subscriber equipment has upstream data to send, can initiatively set up uplink synchronous (promptly when setting up uplink synchronous) by the subscriber equipment decision with the base station; And the base station can not initiatively make subscriber equipment set up uplink synchronous at present.If data are sent to subscriber equipment in the base station so; Subscriber equipment sends up feedback at the uplink loss state; Then can cause the base station to be difficult to correctly to obtain feedback information,, then think this bust this if feedback information is not received in the base station in the time of setting; Retransmit, cause resource waste.
In sum; Strengthening under the CELL_FACH state at present; Because the base station can not initiatively make subscriber equipment set up uplink synchronous, make the base station when having downlink data and to need subscriber equipment that these data are fed back, if subscriber equipment sends feedback information at the uplink loss state to the subscriber equipment transmission; Then can not guarantee the reliability of transmitting uplink data; Can cause the base station to be difficult to the correct feedback information that obtains the subscriber equipment transmission, thereby cause unnecessary retransmission, cause resource waste.
Summary of the invention
The synchronous mthods, systems and devices of a kind of maintaining uplink that the embodiment of the invention provides; In order to solve strengthening under the CELL_FACH state of existing in the prior art; The base station can't initiatively make subscriber equipment set up the problem of uplink synchronous behind the subscriber equipment uplink loss.
A kind of method of sending data that the embodiment of the invention provides; In order to solve strengthening under the CELL_FACH state of existing in the prior art; Data are sent to subscriber equipment in the base station when the subscriber equipment uplink loss, be difficult to the problem of the feedback information of acquisition subscriber equipment.
The synchronous method of a kind of maintaining uplink that the embodiment of the invention provides comprises:
The base station is strengthening under the CELL FACH state; Detect the subscriber equipment uplink loss; There is downlink data to send to said subscriber equipment; And when needing said subscriber equipment that these data are fed back,, comprise the first physical layer control information that notifying user equipment is set up uplink synchronous information to the subscriber equipment transmission through first physical layer control channel;
Said subscriber equipment is set up uplink synchronous with said base station after receiving the said first physical layer control information; If the wherein said first physical layer control information is the absolute grant channel E-AGCH control information of enhanced dedicated, then said first physical layer control channel is E-AGCH; If the shared control channel HS-SCCH control information that the said first physical layer control information is a high speed descending sharing channel, then said first physical layer control control channel is HS-SCCH.
Said subscriber equipment sends to said base station through second physical layer control channel after successfully setting up uplink synchronous with said base station, comprises the second physical layer control information of uplink synchronous confirmation.
The synchronous system of a kind of maintaining uplink that the embodiment of the invention provides comprises:
The base station; Be used for strengthening under the CELL FACH state; Detect the subscriber equipment uplink loss, have downlink data to send to said subscriber equipment, and when needing said subscriber equipment that these data are fed back; Through first physical layer control channel, comprise the first physical layer control information that notifying user equipment is set up uplink synchronous information to the subscriber equipment transmission;
Subscriber equipment, be used to receive the said first physical layer control information after, set up uplink synchronous with said base station; If the wherein said first physical layer control information is the absolute grant channel E-AGCH control information of enhanced dedicated, then said first physical layer control channel is E-AGCH; If the shared control channel HS-SCCH control information that the said first physical layer control information is a high speed descending sharing channel, then said first physical layer control control channel is HS-SCCH.
Said base station comprises:
Processing module is used for that notifying user equipment is set up uplink synchronous information and places the said first physical layer control information;
Sending module is used for the said first physical layer control information after handling is sent to subscriber equipment through first physical layer control channel;
Said subscriber equipment comprises:
Receiver module is used to receive the said first physical layer control information;
Set up module, be used for after said receiver module receives that comprising notifying user equipment sets up the first physical layer control information of uplink synchronous information, setting up uplink synchronous with said base station.
Said subscriber equipment also comprises:
Reply module, be used for after successfully setting up uplink synchronous, sending to said base station, comprise the second physical layer control information of uplink synchronous confirmation through second physical layer control channel with said base station;
Said base station also comprises:
The confirmation receiver module is used for through said second physical layer control channel, receives the said second physical layer control information from said subscriber equipment.
A kind of base station that the embodiment of the invention provides comprises:
Processing module is used for that notifying user equipment is set up uplink synchronous information and places the said first physical layer control information;
Sending module; Be used for strengthening under the CELL FACH state; Detect the subscriber equipment uplink loss, have downlink data to send to said subscriber equipment, and when needing said subscriber equipment that these data are fed back; With the said first physical layer control information after handling, send to subscriber equipment through first physical layer control channel;
Wherein, if the said first physical layer control information is the E-AGCH control information, then said first physical layer control channel is E-AGCH;
If the said first physical layer control information is the HS-SCCH control information, then said first physical layer control channel is HS-SCCH.
Said base station also comprises:
The confirmation receiver module is used for through second physical layer control channel, receives the second physical layer control information that comprises the uplink synchronous confirmation from said subscriber equipment.
A kind of subscriber equipment that the embodiment of the invention provides comprises:
Receiver module; Be used for receiving from the base station under enhancing CELLFACH state through first physical layer control channel; Detect the subscriber equipment uplink loss; There is downlink data to send to said subscriber equipment, and the first physical layer control information of sending when needing said subscriber equipment that these data are fed back;
Set up module, be used for after said receiver module receives that comprising notifying user equipment sets up the first physical layer control information of uplink synchronous information, setting up uplink synchronous with said base station.
Wherein, if the said first physical layer control information is the E-AGCH control information, then said first physical layer control channel is E-AGCH;
If the said first physical layer control information is the HS-SCCH control information, then said first physical layer control channel is HS-SCCH.
Said subscriber equipment also comprises:
Reply module, be used for after successfully setting up uplink synchronous, sending to said base station, comprise the second physical layer control information of uplink synchronous confirmation through second physical layer control channel with said base station.
A kind of method of sending data that the embodiment of the invention provides comprises:
The base station is strengthening under the CELL FACH state; When having data need send and need subscriber equipment that these data are fed back; Through first physical layer control channel; To subscriber equipment send comprise notifying user equipment and set up the first physical layer control information of uplink synchronous information after, carry out data sending processing.
Said base station is carried out descending scheduling and is handled after passing through second physical layer control channel, receiving the second physical layer control information that comprises the uplink synchronous confirmation from said subscriber equipment, and sends downlink data; If the wherein said first physical layer control information is the absolute grant channel E-AGCH control information of enhanced dedicated, then said first physical layer control channel is E-AGCH; If the shared control channel HS-SCCH control information that the said first physical layer control information is a high speed descending sharing channel, then said first physical layer control control channel is HS-SCCH.
The synchronous method of a kind of maintaining uplink comprises:
Subscriber equipment is through first physical layer control channel; Receive from the base station and strengthening under the CELL FACH state; Detect the subscriber equipment uplink loss; There is downlink data to send to said subscriber equipment, and the first physical layer control information of sending when needing said subscriber equipment that these data are fed back;
Said subscriber equipment comprises notifying user equipment in the said first physical layer control information and sets up uplink synchronous information, sets up uplink synchronous with said base station; If the wherein said first physical layer control information is the absolute grant channel E-AGCH control information of enhanced dedicated, then said first physical layer control channel is E-AGCH; If the shared control channel HS-SCCH control information that the said first physical layer control information is a high speed descending sharing channel, then said first physical layer control control channel is HS-SCCH.
Embodiment of the invention base station comprises the first physical layer control information that notifying user equipment is set up uplink synchronous information through first physical layer control channel to the subscriber equipment transmission; After said subscriber equipment is received the said first physical layer control information; Set up uplink synchronous with said base station, because the base station can initiatively make subscriber equipment set up uplink synchronous strengthening under the CELL_FACH state; Realized behind the subscriber equipment uplink loss; The mechanism that the base station has downlink data to wait to send out and subscriber equipment is set up uplink synchronous fast when needing up feedback has improved the reliability and the user experience of transmitting uplink data, has saved system resource thereby reduced unnecessary retransmission.
Description of drawings
Fig. 1 is for carrying out the method flow sketch map of transfer of data in HSDPA;
Fig. 2 is the synchronous system configuration sketch map of embodiment of the invention maintaining uplink;
Fig. 3 is the structural representation of embodiment of the invention base station;
Fig. 4 is the structural representation of embodiment of the invention subscriber equipment;
Fig. 5 is the synchronous method flow sketch map of embodiment of the invention maintaining uplink;
Fig. 6 adopts the synchronous method flow sketch map of E-AGCH control information maintaining uplink for the embodiment of the invention;
Fig. 7 adopts the synchronous method flow sketch map of HS-SCCH control information maintaining uplink for the embodiment of the invention;
Fig. 8 sends the method flow sketch map of data for the embodiment of the invention;
Fig. 9 is the synchronous method flow sketch map of embodiment of the invention subscriber equipment maintaining uplink.
Embodiment
Embodiment of the invention base station will comprise the first physical layer control information that notifying user equipment is set up uplink synchronous information; Send to subscriber equipment through first physical layer control channel; Subscriber equipment is after receiving this first physical layer control information; Set up uplink synchronous with the base station, realized behind the subscriber equipment uplink loss, the base station can notifying user equipment be set up the mechanism of uplink synchronous fast; Thereby improved the reliability of transmitting uplink data, avoided because step-out causes retransmitting the system resource waste that causes.
Wherein, the embodiment of the invention detects the subscriber equipment uplink loss when the base station, has downlink data to send to subscriber equipment, and when needing subscriber equipment that these data are fed back, triggers and send the first physical layer control information.
Need to prove that the embodiment of the invention is not limited to above-mentioned trigger mechanism, in the time of need setting up uplink synchronous with subscriber equipment in the base station, just can send the first physical layer control information.
Only if specify, otherwise the embodiment of the invention of following introduction is all used above-mentioned trigger mechanism.
Below in conjunction with Figure of description the embodiment of the invention is described in further detail.
As shown in Figure 2, the synchronous system of embodiment of the invention maintaining uplink comprises: base station 10 and subscriber equipment 20.
Base station 10 is used for through first physical layer control channel, sends to subscriber equipment 20 to comprise the first physical layer control information that notifying user equipment is set up uplink synchronous information.
Subscriber equipment 20 is used in the first physical layer control information of receiving through first physical layer control channel from base station 10, and when containing notifying user equipment in this first physical layer control information and setting up uplink synchronous information, sets up uplink synchronous with base station 10.
The process of specifically setting up uplink synchronous is:
Subscriber equipment 20 is selected a SYNC_UL (uplink synchronous) sign indicating number at random, and sends to base station 10 through UpPCH (uplink synchronous channel);
Base station 10 is according to the detection to the SYNC_UL sign indicating number; Confirm the timing and the power information of SYNC_UL sign indicating number; Thereby confirm the transmitted power and the time adjusted value of subscriber equipment 20, and the FPACH feedback information of confirming (being transmitted power and time adjusted value) is sent to subscriber equipment 20 through FPACH;
Subscriber equipment 20 is according to the FPACH feedback information adjustment transmitting power and the time that receive, thus the uplink synchronous of completion and base station 10.
Further, subscriber equipment 20 sends to base station 10 through second physical layer control channel after accomplishing the uplink synchronous of setting up with base station 10, comprises the second physical layer control information of uplink synchronous confirmation;
Base station 10 receives the second physical layer control information that comprises the second uplink synchronous confirmation from subscriber equipment 20 through second physical layer control channel.
As shown in Figure 3, embodiment of the invention base station comprises: processing module 100 and sending module 110.
Processing module 100 is used for that notifying user equipment is set up uplink synchronous information and places the first physical layer control information.
Sending module 110 is used for the first physical layer control information after processing module 100 processing is sent to subscriber equipment through first physical layer control channel.
Embodiment of the invention base station can further include: confirmation receiver module 120.
Confirmation receiver module 120 is used for receiving the second physical layer control information that comprises the second uplink synchronous confirmation from subscriber equipment 20 through second physical layer control channel.
Wherein, if the first physical layer control information is E-AGCH (strengthening the absolute grant channel of shape dedicated transmission channel) control information, then first physical layer control channel is E-AGCH;
If the first physical layer control information is the HS-SCCH control information, then first physical layer control channel is HS-SCCH.
Present embodiment is not limited to above-mentioned dual mode, and other physical layer control informations and other corresponding physical layer control channels are suitable for present embodiment equally.
Which kind of mode the base station specifically adopts set up uplink synchronous information as notifying user equipment, can pass through the high-level signaling notifying user equipment, also can in agreement, arrange in advance.
As shown in Figure 4, embodiment of the invention subscriber equipment comprises: receiver module 200 with set up module 210.
Receiver module 200 is used for receiving the first physical layer control information from the base station through first physical layer control channel.
Set up module 210, be used for after receiver module 200 receives that comprising notifying user equipment sets up the first physical layer control information of uplink synchronous information, setting up uplink synchronous with the base station.
Wherein, subscriber equipment can further include: reply module 220.
Reply module 220, be used for after setting up module 210 and successfully setting up uplink synchronous, sending to the base station, comprise the second physical layer control information of uplink synchronous confirmation through second physical layer control channel with the base station.
If the second physical layer control information that answer module 220 is handled is E-RUCCH (enhanced uplink random access channel) control information, second physical layer control channel of then replying module 220 utilizations is E-RUCCH.
If first physical layer control channel that receiver module 200 utilizes is HS-SCCH, the first physical layer control information of receiving is the HS-SCCH control information, then
The said second physical layer control information that answer module 220 is handled is HS-SICH or E-RUCCH control information, and second physical layer control channel of replying module 220 utilizations is HS-SICH or E-RUCCH.
Wherein, subscriber equipment can further include: determination module 230, first judge module 240 and second judge module 250.
Determination module 230; Be used for after the first physical layer control information that receiver module 200 is received is the HS-SCCH control information; Receive data according to the HS-SCCH control information through HS-PDSCH,, confirm feedback information and channel quality indicator (CQI) according to result to these data.
Concrete, determination module 230 is according to the HS-SCCH control information of receiving, through the HS-PDSCH downlink data receiving; CQI is confirmed in mass measurement according to HS-PDSCH; And confirm feedback information according to the data decode result of HS-PDSCH, if decode successfully, then feedback information is ACK; Otherwise feedback information is NACK.
Determination module 230 is confirmed feedback information and CQI and sets up module 210 that to set up uplink synchronous be executed in parallel.
First judge module 240 if be used in setting-up time, set up module 210 and is accomplished the uplink synchronous of setting up with the base station, and the feedback information and the CQI that then determination module 230 are confirmed send to the base station through HS-SICH; Otherwise, do not send feedback information and CQI that determination module 230 is confirmed.
Second judge module 250; Being used in the second physical layer control information is the E-RUCCH control information; Second physical layer control channel is E-RUCCH; And set up module 210 in setting-up time, do not have to accomplish the uplink synchronous of setting up with the base station, feedback information and CQI that determination module 230 is confirmed place the E-RUCCH control information that comprises the uplink synchronous confirmation.
Then reply module 220 and will comprise the E-RUCCH control information of uplink synchronous confirmation, feedback information and CQI, send to the base station through E-RUCCH.
The time of setting can be the delivery time (being within HS-PDSCH and the HS-SICH timing relationship) of HS-SICH, also can set as required.
In the practical implementation process; If feedback information and CQI are sent to the base station through HS-SICH, can not send the uplink synchronous confirmation to the base station, promptly need not send E-RUCCH; The base station thinks that uplink synchronous set up to accomplish behind the feedback information of receiving HS-SICH and CQI;
Also can feedback information and CQI be sent to the base station through HS-SICH, and the uplink synchronous confirmation is sent to the base station through E-RUCCH;
Also can not send feedback information and CQI, only send the uplink synchronous confirmation to the base station through E-RUCCH.
As shown in Figure 5, the synchronous method of embodiment of the invention maintaining uplink comprises the following steps:
Step 500, base station comprise the first physical layer control information that notifying user equipment is set up uplink synchronous information through first physical layer control channel to the subscriber equipment transmission.
Wherein, if the first physical layer control information is the E-AGCH control information, then first physical layer control channel is E-AGCH;
If the first physical layer control information is the HS-SCCH control information, then first physical layer control channel is HS-SCCH.
Present embodiment is not limited to above-mentioned dual mode, and other physical layer control informations and other corresponding physical layer control channels are suitable for present embodiment equally.
Which kind of mode the base station specifically adopts set up uplink synchronous information as notifying user equipment, can pass through the high-level signaling notifying user equipment, also can in agreement, arrange in advance.
When the first physical layer control information is the E-AGCH control information:
Concrete, the E-AGCH control information is as shown in table 1,
Information field Implication
Power resource relevant information (PRRI) 5bits; Expression Node B dispatches the power resource permission to UE
Sign indicating number resource related information (CRRI) 5bits; The spreading code that indication E-PUCH uses
Time interval resource relevant information (TRRI) 5bits; 5 bits indicate time slot 1 to time slot 5 respectively
Resource continuous indication (RDI) 3bits; Be used to the TTI number and the interval information of indicating resource authorization to come into force
E-AGCH cyclic sequence number (ECSN) 3bits; Be used for the auxiliary E-AGCH exterior ring power control of carrying out, the BLER of statistics E-AGCH
The E-HICH indication 2bits; Be used to indicate the E-HICH of bearing downlink feedback information
The indication of E-UCCH number 3bits; The E-UCCH number that expression is sent is 8 at most
Table 1E-AGCH control information structure
Uplink synchronous information can be set up as notifying user equipment through revising the existing field implication in the E-AGCH control information or increasing new field in the base station.
1) if use the TRRI field, can the TRRI field be made as " complete 0 ", uplink synchronous is set up in expression;
2) if use the CRRI field, because this field is 5 bits, represent 32 values altogether, only used index 0~30 totally 31 values in the system at present, therefore can the CRRI field be made as " complete 1 ", uplink synchronous is set up in expression;
3) if use the PRRI field,, represent 32 values altogether, can revise the implication of last value, be about to the PRR field and be made as " complete 1 ", be used for expression and set up uplink synchronous because this field is 5 bits;
4) can be with above-mentioned three field combination in any, uplink synchronous is set up in expression, for example uses above-mentioned TRRI field and CRRI field simultaneously;
5) extra increase by 1 bit information in the E-AGCH control information, uplink synchronous is set up in expression.
Present embodiment is not limited to the above-mentioned several kinds of modes of revising the E-AGCH control information, and other modes are suitable for present embodiment equally.
When the first physical layer control information is the HS-SCCH control information:
Concrete, the HS-SCCH control information is as shown in table 2,
Table 2HS-SCCH control information structure
Uplink synchronous information can be set up as notifying user equipment through revising the existing field implication in the HS-SCCH control information or increasing new field in the base station.
1) if uses the gap information field; Can utilize the 1st bit in 5 bits of gap information field; For example stipulate that time slot 2 is as up; The 1st bit during so corresponding gap information field configuration in 5 bits should be configured to " 0 ", therefore can dispose this bit and set up uplink synchronous for " 1 " is used for expression;
2) if use the code channel information field, can pass through the special pattern of part of initial code (Start Code) and stop code (StopCode), uplink synchronous is set up in expression.
Such as: in the code channel information field of present 8 bits; Preceding 4 bits are represented position, initial code road; Back 4 bits are represented position, stop code road, and Start Code is not more than Stop Code (except " 11110001 ", the employed spreading factor SF=1 of its expression HS-PDSCH); Therefore can use the particular bit pattern of Start Code greater than Stop Code; If subscriber equipment detects Start Code greater than Stop Code (except " 11110001 "), then subscriber equipment triggers uplink synchronous, and these codeword information are also indicated the employed code channel information of HS-PDSCH simultaneously.
3) extra increase by 1 bit information in the HS-SCCH control information, uplink synchronous is set up in expression.
Present embodiment is not limited to the above-mentioned several kinds of modes of revising the HS-SCCH control information, and other modes are suitable for present embodiment equally.
Step 501, subscriber equipment be in the first physical layer control information of receiving through first physical layer control channel from the base station, and when containing notifying user equipment in this first physical layer control information and setting up uplink synchronous information, set up uplink synchronous with the base station.
The process of specifically setting up uplink synchronous is:
Subscriber equipment is selected a SYNC_UL sign indicating number at random, and sends to the base station through UpPCH;
The base station is according to the detection to the SYNC_UL sign indicating number; Confirm the timing and the power information of SYNC_UL sign indicating number; Thereby confirm the transmitted power and the time adjusted value of subscriber equipment, and the FPACH feedback information of confirming (being transmitted power and time adjusted value) is sent to subscriber equipment through FPACH;
Subscriber equipment is according to the FPACH feedback information adjustment transmitting power and the time that receive, thus the uplink synchronous of completion and base station.
Wherein, can further include after the step 501:
Step 502, subscriber equipment send to the base station through second physical layer control channel after successfully setting up uplink synchronous with the base station, comprise the second physical layer control information of uplink synchronous confirmation.
Accordingly, the base station receives the second physical layer control information from subscriber equipment through second physical layer control channel.
If the second physical layer control information is the E-RUCCH control information, then second physical layer control channel is E-RUCCH.
If the first physical layer control information is the E-AGCH control information, first physical layer channel is E-AGCH, and then the second physical layer control information is the E-RUCCH control information, and second physical layer control channel is E-RUCCH.
If the first physical layer control information is the HS-SCCH control information, first physical layer channel is HS-SCCH, and then the second physical layer control information is HS-SICH or E-RUCCH control information, and second physical layer control channel is HS-SICH or E-RUCCH.
Wherein, if the first physical layer control information is the HS-SCCH control information, then subscriber equipment can further include after receiving the HS-SCCH control information in the step 501:
S1, subscriber equipment receive data according to the HS-SCCH control information of receiving through HS-PDSCH, according to the result to these data, confirm feedback information and channel quality indicator (CQI).
Subscriber equipment receives data according to the HS-SCCH control information through HS-PDSCH according to after receiving the HS-SCCH control information, according to the result to these data, confirms feedback information and channel quality indicator (CQI).
Concrete, subscriber equipment is according to the HS-SCCH control information of receiving, through the HS-PDSCH downlink data receiving; CQI is confirmed in mass measurement according to HS-PDSCH; And confirm feedback information according to the data decode result of HS-PDSCH, if decode successfully, then feedback information is ACK; Otherwise feedback information is NACK.
S2, subscriber equipment are checked in setting-up time whether accomplish the uplink synchronous of setting up with the base station, if then with the feedback information and the CQI that confirm, send to the base station through HS-SICH; Otherwise, do not send definite feedback information and CQI or feedback information and CQI are placed the E-RUCCH control information that comprises the uplink synchronous confirmation, send to the base station through E-RUCCH.
If the second physical layer control information is the E-RUCCH control information; Second physical layer control channel is E-RUCCH; Then among the S2, subscriber equipment does not have to accomplish the uplink synchronous of setting up with said base station in setting-up time; The feedback information and the CQI that confirm are placed the E-RUCCH control information that comprises the uplink synchronous confirmation, send to the base station through E-RUCCH.
Concrete, the time of setting can be the delivery time (being within HS-PDSCH and the HS-SICH timing relationship) of HS-SICH, also can set as required.
In the practical implementation process,, then can feedback information and CQI be placed the E-RUCCH control information that comprises the uplink synchronous confirmation if feedback information and CQI are sent to the base station through E-RUCCH;
Also can send the uplink synchronous confirmation to the base station, send feedback information and CQI through the HS-SICH base station through E-RUCCH;
Also can be send the uplink synchronous confirmation to the base station, only need to send feedback information and CQI, the base station thinks that uplink synchronous sets up completion after receiving feedback information and CQI;
Also can not send feedback information and CQI, only send the uplink synchronous confirmation to the base station through E-RUCCH.
As shown in Figure 6, the embodiment of the invention adopts the synchronous method of E-AGCH control information maintaining uplink to comprise the following steps:
Wherein, the first physical layer control information is the E-AGCH control information, and the second physical layer control information is the E-RUCCH control information.
Step 600, base station are detecting the subscriber equipment uplink loss; And there is the downlink data need be when subscriber equipment sends; To comprise notifying user equipment and set up the E-AGCH control information of uplink synchronous information, and send to subscriber equipment through the E-AGCH control channel, and stop descending scheduling.
Step 601, subscriber equipment receive and contain the E-AGCH control information of setting up uplink synchronous information through the E-AGCH control channel.
Step 602, subscriber equipment are selected a SYNC_UL sign indicating number at random, and send to the base station through UpPCH.
Step 603, base station receive the SYNC_UL sign indicating number through UpPCH; According to detection to the SYNC_UL sign indicating number; Confirm the timing and the power information of SYNC_UL sign indicating number, thereby confirm the transmitted power and the time adjusted value of subscriber equipment, and the FPACH feedback information of confirming is sent to subscriber equipment through FPACH.
Step 604, subscriber equipment are according to the FPACH feedback information adjustment transmitting power and the time of receiving, thus the uplink synchronous of completion and base station.
Step 605, subscriber equipment will comprise the E-RUCCH control information of uplink synchronous confirmation after accomplishing uplink synchronous foundation, send to the base station through E-RUCCH.
After the E-RUCCH control information is received in step 606, base station, carry out the scheduling and the data of downlink data and send.
In the practical implementation process, if the E-RUCCH control information that comprises the uplink synchronous confirmation that subscriber equipment sends is received in the base station, then the base station is sent schedule information through HS-SCCH to subscriber equipment;
If the E-RUCCH control information that comprises the uplink synchronous confirmation that subscriber equipment sends is not received in the base station; Then the base station will comprise the E-AGCH control information that notifying user equipment is set up uplink synchronous information again, send to subscriber equipment through the E-AGCH control channel.
As shown in Figure 7, the embodiment of the invention adopts the synchronous method of HS-SCCH control information maintaining uplink to comprise the following steps:
Wherein, the first physical layer control information is the HS-SCCH control information, and the second physical layer control information is E-RUCCH control information or HS-SICH control information.
Step 700, base station are detecting the subscriber equipment uplink loss; And there is the downlink data need be when subscriber equipment sends; To comprise notifying user equipment and set up the HS-SCCH control information of uplink synchronous information, send to subscriber equipment through the HS-SCCH control channel.
Step 701, subscriber equipment receive and contain the HS-SCCH control information of setting up uplink synchronous information and down dispatch information through the HS-SCCH control channel.
Step 702, subscriber equipment are selected a SYNC_UL sign indicating number at random, and send to the base station through UpPCH;
Simultaneously, subscriber equipment through the HS-PDSCH downlink data receiving, is confirmed CQI according to the mass measurement to HS-PDSCH, and is confirmed feedback information according to the data decode result of HS-PDSCH according to the HS-SCCH control information of receiving.
Step 703, base station receive the SYNC_UL sign indicating number through UpPCH; According to detection to the SYNC_UL sign indicating number; Confirm the timing and the power information of SYNC_UL sign indicating number, thereby confirm the transmitted power and the time adjusted value of subscriber equipment, and the FPACH feedback information of confirming is sent to subscriber equipment through FPACH.
Step 704, subscriber equipment are according to the FPACH feedback information adjustment transmitting power and the time of receiving, thus the uplink synchronous of completion and base station.
Step 705, subscriber equipment send processing after accomplishing uplink synchronous foundation.
Subscriber equipment sends the four kinds of situation that are divided into of handling:
If first kind of subscriber equipment before the delivery time of HS-SICH, successfully set up uplink synchronous with the base station, then, send to the base station through HS-SICH with the feedback information and the CQI that confirm, send the uplink synchronous confirmation through E-RUCCH to the base station;
If second kind of subscriber equipment before the delivery time of HS-SICH, successfully set up uplink synchronous with the base station, then, send to the base station through HS-SICH with the feedback information and the CQI that confirm, do not send the uplink synchronous confirmation;
If the third subscriber equipment behind the delivery time of HS-SICH, is successfully set up uplink synchronous with the base station, then can not send feedback information and CQI according to setting in advance, send the uplink synchronous confirmation through E-RUCCH to the base station;
If the 4th kind of subscriber equipment successfully set up uplink synchronous with the base station behind the delivery time of HS-SICH, then feedback information and CQI are placed the E-RUCCH control information that comprises the uplink synchronous confirmation, send to the base station through E-RUCCH.
Handle according to the information of receiving step 706, base station.
Five kinds of situation have been handled to information in the base station:
If first kind of base station is in the time of reception of HS-SICH; Receive feedback information and CQI that subscriber equipment sends; Then suitable transformat according to feedback information and CQI, is confirmed in the base station after receiving that subscriber equipment passes through the uplink synchronous confirmation of E-RUCCH transmission; Carry out descending scheduling through HS-SCCH to the control information that subscriber equipment sends subscriber equipment, do not comprise notifying user equipment in this control information and set up uplink synchronous information;
If second kind of base station is in the time of reception of HS-SICH; Receive feedback information and CQI that subscriber equipment sends; Then the base station thinks that subscriber equipment successfully set up uplink synchronous, then according to feedback information and CQI, confirms suitable transformat; Carry out descending scheduling through HS-SCCH to the control information that subscriber equipment sends subscriber equipment, do not comprise notifying user equipment in this control information and set up uplink synchronous information;
If the third base station is in the time of reception of HS-SICH; Do not receive feedback information and CQI that subscriber equipment sends; Then wait for the E-RUCCH uplink synchronous confirmation that the user sends,, think that then user uplink sets up success synchronously if receive this information; Cross HS-SCCH then and carry out descending scheduling, do not comprise notifying user equipment in this control information and set up uplink synchronous information to the control information that subscriber equipment sends subscriber equipment;
If the 4th kind of base station is in the time of reception of HS-SICH; Do not receive feedback information and CQI that subscriber equipment sends, behind the delivery time of HS-SICH, receive the E-RUCCH control information that comprises the uplink synchronous confirmation; Then the base station to E-RUCCH control information decode; Obtain feedback information and CQI,, confirm suitable transformat then according to feedback information and CQI; Carry out descending scheduling through HS-SCCH to the control information that subscriber equipment sends subscriber equipment, do not comprise notifying user equipment in this control information and set up uplink synchronous information;
If the uplink synchronous confirmation is not received in the 5th kind of base station; Then the base station is sent the HS-SCCH control information through the HS-SCCH control channel to subscriber equipment again, comprises the HS-SCCH control information that notifying user equipment is set up uplink synchronous information in this control information.
Concrete which kind of mode that adopts, base station and subscriber equipment can be held consultation definite, also can realize passing through agreement.
As shown in Figure 8, the method that the embodiment of the invention is sent data comprises the following steps:
Step 800, base station through first physical layer control channel, comprise the first physical layer control information that notifying user equipment is set up uplink synchronous information to the subscriber equipment transmission when having data need send and need subscriber equipment that these data are fed back.
Data sending processing is carried out in step 801, base station after sending the first physical layer control information.
Wherein, step 801 can further include:
The first physical layer control information is being sent in the base station, and through second physical layer control channel, receive the second physical layer control information that comprises the uplink synchronous confirmation from subscriber equipment after, carry out descending scheduling and handle, and send downlink data.
Embodiment of the invention base station is when the subscriber equipment uplink loss; Notifying user equipment is set up uplink synchronous, thereby after sending data to subscriber equipment, can accurately obtain the feedback information that subscriber equipment sends; Guarantee the reliability that data are sent, improved the efficient of sending data.
As shown in Figure 9, the synchronous method of embodiment of the invention subscriber equipment maintaining uplink comprises the following steps:
Step 900, subscriber equipment receive the first physical layer control information from the base station through first physical layer control channel.
Step 901, subscriber equipment are set up uplink synchronous with the base station when the first physical layer control information of receiving comprises notifying user equipment and sets up uplink synchronous information.
From the foregoing description, can find out: embodiment of the invention base station comprises the first physical layer control information that notifying user equipment is set up uplink synchronous information through first physical layer control channel to the subscriber equipment transmission; After said subscriber equipment is received the said first physical layer control information; Set up uplink synchronous with said base station, because the base station can initiatively make subscriber equipment set up uplink synchronous strengthening under the CELL_FACH state; Realized behind the subscriber equipment uplink loss; The mechanism that the base station has downlink data to wait to send out and subscriber equipment is set up uplink synchronous fast when needing up feedback has improved the reliability and the user experience of transmitting uplink data, has saved system resource thereby reduced unnecessary retransmission.
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.

Claims (24)

1. the method that maintaining uplink is synchronous is characterized in that, this method comprises:
The base station is under reinforced cell forward access channel CELL FACH state; Detect the subscriber equipment uplink loss; There is downlink data to send to said subscriber equipment; And when needing said subscriber equipment that these data are fed back,, comprise the first physical layer control information that notifying user equipment is set up uplink synchronous information to the subscriber equipment transmission through first physical layer control channel;
Said subscriber equipment is set up uplink synchronous with said base station after receiving the said first physical layer control information;
Wherein, if the absolute grant channel E-AGCH control information that the said first physical layer control information is an enhanced dedicated, then said first physical layer control channel is E-AGCH;
If the shared control channel HS-SCCH control information that the said first physical layer control information is a high speed descending sharing channel, then said first physical layer control control channel is HS-SCCH.
2. the method for claim 1 is characterized in that, this method also comprises:
Said subscriber equipment through second physical layer control channel, sends the second physical layer control information that comprises the uplink synchronous confirmation to said base station after successfully setting up uplink synchronous with said base station.
3. method as claimed in claim 2 is characterized in that,
If the said second physical layer control information is enhanced uplink random access channel E-RUCCH control information, then said second physical layer control channel is E-RUCCH.
4. method as claimed in claim 2 is characterized in that,
If the said first physical layer control information is the HS-SCCH control information; Said first physical layer control channel is HS-SCCH; The shared information channel HS-SICH control information that the then said second physical layer control information is a high speed descending sharing channel, said second physical layer control channel is HS-SICH.
5. like claim 1 or 4 described methods, it is characterized in that this method also comprises:
Said subscriber equipment is after the said first physical layer control information of receiving is the HS-SCCH control information; Receive data according to said HS-SCCH control information through high-speed downstream Physical Shared Channel HS-PDSCH; According to result, confirm feedback information and channel quality indicator (CQI) to these data;
Said subscriber equipment is accomplished the uplink synchronous of setting up with said base station in setting-up time, with said feedback information and said CQI, send to said base station through HS-SICH.
6. method as claimed in claim 5; It is characterized in that, be the E-RUCCH control information in the second physical layer control information, and second physical layer control channel is E-RUCCH; And subscriber equipment is in setting-up time; Do not have to accomplish the uplink synchronous of setting up with said base station, then said feedback information and said CQI are placed the E-RUCCH control information that comprises the uplink synchronous confirmation, send to the base station through E-RUCCH.
7. the system that maintaining uplink is synchronous is characterized in that, this system comprises:
The base station; Be used for strengthening under the CELL FACH state; Detect the subscriber equipment uplink loss, have downlink data to send to said subscriber equipment, and when needing said subscriber equipment that these data are fed back; Through first physical layer control channel, comprise the first physical layer control information that notifying user equipment is set up uplink synchronous information to the subscriber equipment transmission;
Subscriber equipment, be used to receive the said first physical layer control information after, set up uplink synchronous with said base station;
Wherein, if the absolute grant channel E-AGCH control information that the said first physical layer control information is an enhanced dedicated, then said first physical layer control channel is E-AGCH;
If the shared control channel HS-SCCH control information that the said first physical layer control information is a high speed descending sharing channel, then said first physical layer control control channel is HS-SCCH.
8. system as claimed in claim 7 is characterized in that, said base station comprises:
Processing module is used for that notifying user equipment is set up uplink synchronous information and places the said first physical layer control information;
Sending module is used for the said first physical layer control information after handling is sent to subscriber equipment through first physical layer control channel;
Said subscriber equipment comprises:
Receiver module is used to receive the said first physical layer control information;
Set up module, be used for after said receiver module receives that comprising notifying user equipment sets up the first physical layer control information of uplink synchronous information, setting up uplink synchronous with said base station.
9. system as claimed in claim 8 is characterized in that, said subscriber equipment also comprises:
Reply module, be used for after successfully setting up uplink synchronous, sending to said base station, comprise the second physical layer control information of uplink synchronous confirmation through second physical layer control channel with said base station;
Said base station also comprises:
The confirmation receiver module is used for through said second physical layer control channel, receives the said second physical layer control information from said subscriber equipment.
10. system as claimed in claim 9 is characterized in that,
If the said second physical layer control information that said answer module is handled is enhanced uplink random access channel E-RUCCH control information, said second physical layer control channel that then said answer module is utilized is E-RUCCH.
11. system as claimed in claim 9 is characterized in that,
If the said first physical layer control information that said processing module is handled is the HS-SCCH control information, said first physical layer control channel that said sending module utilizes is HS-SCCH, then
The shared information channel HS-SICH control information that the said second physical layer control information that said answer module is handled is a high speed descending sharing channel, said second physical layer control channel that said answer module is utilized is HS-SICH.
12., it is characterized in that said subscriber equipment also comprises like claim 8 or 11 described systems:
Determination module; Be used for after the said first physical layer control information that said receiver module is received is the HS-SCCH control information; Receive data according to said HS-SCCH control information through high-speed downstream Physical Shared Channel HS-PDSCH; According to result, confirm feedback information and channel quality indicator (CQI) to these data;
First judge module is used in setting-up time, and the said module of setting up is accomplished the uplink synchronous of setting up with said base station, with said feedback information and said CQI, sends to said base station through HS-SICH.
13. system as claimed in claim 12 is characterized in that, said subscriber equipment also comprises:
Second judge module; Being used in the said second physical layer control information is the E-RUCCH control information; Said second physical layer control channel is E-RUCCH; And the said module of setting up does not have to accomplish the uplink synchronous of setting up with said base station in setting-up time, said feedback information and said CQI that said determination module is confirmed place the E-RUCCH control information that comprises the uplink synchronous confirmation.
14. a base station is characterized in that, said base station comprises:
Processing module is used for that notifying user equipment is set up uplink synchronous information and places the first physical layer control information;
Sending module; Be used for strengthening under the CELL FACH state; Detect the subscriber equipment uplink loss, have downlink data to send to said subscriber equipment, and when needing said subscriber equipment that these data are fed back; With the said first physical layer control information after handling, send to subscriber equipment through first physical layer control channel;
Wherein, if the said first physical layer control information is the E-AGCH control information, then said first physical layer control channel is E-AGCH;
If the said first physical layer control information is the HS-SCCH control information, then said first physical layer control channel is HS-SCCH.
15. base station as claimed in claim 14 is characterized in that, said base station also comprises:
The confirmation receiver module is used for through second physical layer control channel, receives the second physical layer control information that comprises the uplink synchronous confirmation from said subscriber equipment.
16. a subscriber equipment is characterized in that, this subscriber equipment comprises:
Receiver module; Be used for receiving from the base station under enhancing CELLFACH state through first physical layer control channel; Detect the subscriber equipment uplink loss; There is downlink data to send to said subscriber equipment, and the first physical layer control information of sending when needing said subscriber equipment that these data are fed back;
Set up module, be used for after said receiver module receives that comprising notifying user equipment sets up the first physical layer control information of uplink synchronous information, setting up uplink synchronous with said base station;
Wherein, if the said first physical layer control information is the E-AGCH control information, then said first physical layer control channel is E-AGCH;
If the said first physical layer control information is the HS-SCCH control information, then said first physical layer control channel is HS-SCCH.
17. subscriber equipment as claimed in claim 16 is characterized in that, said subscriber equipment also comprises:
Reply module, be used for after successfully setting up uplink synchronous, sending to said base station, comprise the second physical layer control information of uplink synchronous confirmation through second physical layer control channel with said base station.
18. subscriber equipment as claimed in claim 17 is characterized in that,
If the said second physical layer control information that said answer module is handled is enhanced uplink random access channel E-RUCCH control information, said second physical layer control channel that then said answer module is utilized is E-RUCCH.
19. subscriber equipment as claimed in claim 17; It is characterized in that; If said first physical layer control channel that said receiver module utilizes is the shared control channel HS-SCCH of high speed descending sharing channel, the said first physical layer control information of receiving is the HS-SCCH control information, then
The shared information channel HS-SICH control information that the said second physical layer control information that said answer module is handled is a high speed descending sharing channel, said second physical layer control channel that said answer module is utilized is HS-SICH.
20., it is characterized in that said subscriber equipment also comprises like claim 18 or 19 described subscriber equipmenies:
Determination module; Be used for after the said first physical layer control information that said receiver module is received is the HS-SCCH control information; Receive data according to said HS-SCCH control information through high-speed downstream Physical Shared Channel HS-PDSCH; According to result, confirm feedback information and channel quality indicator (CQI) to these data;
First judge module is used in setting-up time, and the said module of setting up is accomplished the uplink synchronous of setting up with said base station, with said feedback information and said CQI, sends to said base station through HS-SICH.
21. subscriber equipment as claimed in claim 20 is characterized in that, said subscriber equipment also comprises:
Second judge module; Being used in the said second physical layer control information is the E-RUCCH control information; Said second physical layer control channel is E-RUCCH; And the said module of setting up does not have to accomplish the uplink synchronous of setting up with said base station in setting-up time, said feedback information and said CQI that said determination module is confirmed place the E-RUCCH control information that comprises the uplink synchronous confirmation.
22. a method of sending data is characterized in that, this method comprises:
The base station is strengthening under the CELL FACH state; When having data need send and need subscriber equipment that these data are fed back; Through first physical layer control channel; To subscriber equipment send comprise notifying user equipment and set up the first physical layer control information of uplink synchronous information after, carry out data sending processing;
Wherein, if the absolute grant channel E-AGCH control information that the said first physical layer control information is an enhanced dedicated, then said first physical layer control channel is E-AGCH;
If the shared control channel HS-SCCH control information that the said first physical layer control information is a high speed descending sharing channel, then said first physical layer control control channel is HS-SCCH.
23. method as claimed in claim 22 is characterized in that, said base station is carried out data sending processing and is comprised:
Said base station is carried out descending scheduling and is handled after passing through second physical layer control channel, receiving the second physical layer control information that comprises the uplink synchronous confirmation from said subscriber equipment, and sends downlink data.
24. the method that maintaining uplink is synchronous is characterized in that, this method comprises:
Subscriber equipment is through first physical layer control channel; Receive from the base station and strengthening under the CELL FACH state; Detect the subscriber equipment uplink loss; There is downlink data to send to said subscriber equipment, and the first physical layer control information of sending when needing said subscriber equipment that these data are fed back;
Said subscriber equipment comprises notifying user equipment in the said first physical layer control information when setting up the information of uplink synchronous, sets up uplink synchronous with said base station;
Wherein, if the absolute grant channel E-AGCH control information that the said first physical layer control information is an enhanced dedicated, then said first physical layer control channel is E-AGCH;
If the shared control channel HS-SCCH control information that the said first physical layer control information is a high speed descending sharing channel, then said first physical layer control control channel is HS-SCCH.
CN2008101140193A 2008-05-30 2008-05-30 Method, system and device for maintaining uplink synchronization and method for sending data Active CN101594672B (en)

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