CN101594680B - Feedback method of resources of high-speed physical downlink shared channel - Google Patents
Feedback method of resources of high-speed physical downlink shared channel Download PDFInfo
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- CN101594680B CN101594680B CN2008100977779A CN200810097777A CN101594680B CN 101594680 B CN101594680 B CN 101594680B CN 2008100977779 A CN2008100977779 A CN 2008100977779A CN 200810097777 A CN200810097777 A CN 200810097777A CN 101594680 B CN101594680 B CN 101594680B
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Abstract
The invention provides a feedback method of the resources of a high-speed physical downlink shared channel, comprising the following steps: after user equipment receives the resources of the high-speed physical downlink shared channel, which are sent by a base station and before the feedback time of a high-speed shared information channel, if the user equipment is in an uplink step-out state, the user equipment gives up the use of the high-speed shared information channel to carry out feedback, and after the uplink synchronization is carried out, the user equipment uses an enhanced uplink random access channel to feed back the receiving conditions of the resources of the high-speed physical downlink shared channel to the base station. The technical scheme of the invention avoids the resource waste caused by that the base station can not receive the feedback information to carry out blind retransmission and can also ensure that the base station can correctly receive the feedback information.
Description
Technical field
The present invention relates to field of wireless communication, be specifically related to a kind of HS-PDSCH (High-Speed Physical Downlink Shared Channel: the feedback method of resource reception condition High-Speed Physical Downlink Shared Channel).
Background technology
TD-SCDMA (time-division, synchronous code division multiple access inserted) system has very high requirement as a kind of synchronization CDMA (code division multiple access) system to uplink synchronous.Not only can cause the information of self sending also can be produced the strong interference to other users by the correct reception in base station if UE (subscriber equipment) sends under the situation of uplink loss, this just makes UE before emission other signals except that uplink synchronous code, need to guarantee self to be in the uplink synchronous state.
After introducing HSPA+ (evolution that high-speed packet inserts), UE can be in FACH (forward access channel) state descending use HS-DSCH (high-speed downlink shared channel) resource, up use E-DCH (enhancing dedicated channel).Do not have DPCH (uplink special physical channel) owing to UE this moment, and can't keep the long-time continuous transfer of data again, so possibly enter into the uplink loss state in the UE interrupt data after transmission a period of time.UE will recover from the uplink loss state, can only initiate the uplink synchronous process.As shown in Figure 1, the uplink synchronous process comprises 3 steps: 1, UE sends uplink synchronous code; 2, NodeB (base station) feeds back FPACH (physical access channel) after successfully receiving uplink synchronous code; 3, UE adjusts according to parameter wherein after successfully receiving FPACH, accomplishes uplink synchronous.
In this case; If having data will issue this UE, NodeB can send HS-SCCH (High-Speed Shared Control Channel: High-Speed Shared Control Channel) earlier; After UE listens to one's own HS-SCCH, can receive the indicated HS-PDSCH resource of HS-SCCH.Under the normal condition, UE needs to feed back to NodeB through HS-SICH (high-speed shared information channel) after receiving HS-PDSCH.If but UE is in the uplink loss state at this moment; And HS-SICH and HS-PDSCH accomplish the uplink synchronous operation before having relatively-stationary sequential relationship (UE can only put the HS-SICH channel feedback reception condition of utilizing with the HS-SCCH pairing after receiving HS-PDSCH at a fixed time), UE to be difficult in the HS-SICH delivery time to reach.If UE uses HS-SICH to feed back before not accomplishing uplink synchronous rashly, not only be difficult to guarantee the correct reception of NodeB to feedback information, also can be to producing bigger interference with other users on the time slot.Therefore, UE can only select to abandon the feedback of HS-SICH.On the other hand, if UE abandons the feedback to HS-PDSCH transmission situation, whether NodeB just can't know this transmission success, can only select re-transmission blindly, so just possibly cause the unnecessary waste of resource.
E-RUCCH (enhanced uplink random access channel) full name is E-DCH random access control channel (E-DCH Random Access Uplink Control Channel); Be used for when UE does not have available E-PUCH (enhanced uplink physical channel) resource sending the upstream control signaling of E-DCH, mainly comprise uplink scheduling information and the UE ID of UE to NodeB.As shown in Figure 2; The flow process of UE application ascending resource has comprised the process that UE carries out uplink synchronous; Different is that UE uses the special grouping that E-RUCCH uses of specializing in when sending uplink synchronous code, and after receiving FPACH, initiates to use the corresponding PRACH (grouping Physical Random Access Channel) of uplink synchronous code to send E-RUCCH.
Summary of the invention
The technical problem that the present invention will solve provides a kind of feedback method to high-speed physics downlink sharied signal channel resource, avoided UE to use HS-SICH to feed back rashly and the NodeB that brings to feedback information can't correctly receive and to producing bigger interference with other users on the time slot.
In order to address the above problem; The invention provides a kind of feedback method to high-speed physics downlink sharied signal channel resource; Comprise: after user equipment (UE) is received the High-Speed Physical Downlink Shared Channel HS-PDSCH resource that base station NodeB sends; Before high-speed shared information channel HS-SICH feedback arrives constantly, if said UE is in the uplink loss state, then UE this abandon using HS-SICH to feed back; And after uplink synchronous is accomplished, use up enhanced random to insert the E-RUCCH channel to this reception condition of NodeB feedback to the HS-PDSCH resource.
Further, said method further may further comprise the steps:
(a) UE is after the HS-PDSCH channel receives data; Before the feedback of HS-SICH channel arrives constantly,, judge further then whether it is in the uplink synchronous process if judge the uplink loss state that himself is in; If be in the uplink synchronous process; After then waiting to receive physical access channel FPACH, execution in step (c), otherwise execution in step (b);
(b) said UE initiates uplink synchronous to NodeB, accomplishes uplink synchronous, execution in step (c) then;
(c) said UE uses grouping Physical Random Access Channel PRACH transmission E-RUCCH to feed back this reception condition to the HS-PDSCH resource.
Further, said UE judges whether it is in the uplink loss state and adopts one of following mode before the HS-SICH feedback arrives constantly:
If said UE does not carry out transfer of data in Preset Time, then judge the uplink loss state that self is in;
Said UE basis identifies with the step-out of said NodeB agreement, knows that through the indication of NodeB it is in the uplink loss state.
Further, said step-out sign is meant the special filling method of certain indicating bit in the high-speed shared control channel HS-SCCH message or said HS-SCCH message.
Further, when said UE initiated uplink synchronous to NodeB, UE sent the uplink synchronous code character that supplies E-RUCCH to use to NodeB.
Further; Schedule information among the said E-RUCCH accounts for 23 bits altogether; When being used to feed back UE to the reception condition of HS-PDSCH resource; Said UE and NodeB agreement represent that as sign the E-RUCCH of this moment is the feedback to HS-PDSCH resource reception condition with the combination of one of them bit or a plurality of bits, and arrange the implication of the entrained information of all the other bits, comprise the ACK/NACK that is used for indicating this HS-PDSCH transmission Data Receiving correctness in all the other bits at least.
Further, said sign adopts following mode to represent that the E-RUCCH of this moment is the feedback to HS-PDSCH resource reception condition:
The the 11st to 15bits is 0 entirely in the said schedule information, and the 16th to 19bits is not 0 entirely;
The the 11st to 15bits is 0 entirely in the said schedule information, and the 16th to 17bits is not 0 entirely.
Further, said all the other bits also carry one or more in the following information:
Be used to indicate the big or small RTBS of transmission block of UE recommendation; Be used to indicate the RMF of the modulation system that UE recommends; Path loss information PATHLOSS.
Further; Said NodeB is as if the feedback information of constantly not receiving said UE in the HS-SICH feedback; Wait for that then said UE uses the E-RUCCH feedack; Said NodeB uses HS-SICH or E-RUCCH feedack if in Preset Time, receive said UE, then thinks bust this, carries out the scheduled transmission process again.
Further, in said step (b), if said UE is in the uplink synchronous process, but Preset Time to after do not receive FPACH yet, then initiate uplink synchronous to NodeB again.
In sum; The present invention provides a kind of feedback method to high-speed physics downlink sharied signal channel resource;, the user is in the uplink loss state when receiving the HS-PDSCH resource of sending the base station; And, the HS-SICH feedback fails to recover this reception condition of E-RUCCH feedback that uplink synchronous then adopts modification before arriving constantly to the HS-PDSCH resource; Avoided NodeB because of carrying out blindly retransmitting the wasting of resources that brings by receiving feedback information, can also guarantee the correct reception of NodeB feedback information.
Description of drawings
Fig. 1 is a uplink synchronous process sketch map;
Fig. 2 is the user sends a process sketch map from E-RUCCH to the base station;
Fig. 3 is the feedback method sketch map of the present invention to the HS-PDSCH resource.
Embodiment
The present invention provides a kind of feedback method to the HS-PDSCH resource; After UE receives the HS-PDSCH resource that NodeB sends; Before the HS-SICH feedback arrives constantly; If UE still is in the uplink loss state, then after uplink synchronous, use this reception condition of E-RUCCH feedback to the HS-PDSCH resource.
Present embodiment provides a kind of feedback method to the HS-PDSCH resource, and is as shown in Figure 3, may further comprise the steps:
After step 302, UE receive HS-SCCH, judge the HRNTI that carries among this HS-SCCH (at a high speed-Radio Network Temporary Identifier) identical with oneself, then UE uses the indicated HS-PDSCH resource of HS-SCCH to receive data;
After step 303, UE are accomplished Data Receiving, before the HS-SICH feedback arrives constantly, judge whether self is in the uplink loss state, if, then UE this abandon using HS-SICH to feed back, execution in step 304, otherwise, continue normal flow;
UE judges that the method that is in desynchronizing state can be that: UE judges according to timer, promptly when UE does not carry out transfer of data in preset a period of time, judges the uplink loss state that self is in; Perhaps the UE basis identifies with the step-out of NodeB agreement, knows that through the indication of NodeB it is in the uplink loss state, and the step-out sign is meant NodeB certain indicating bit in HS-SCCH message or the special filling method of HS-SCCH message.In HS-SCCH message; Start Code (initial code) is used to represent the minimum physical channel of the operable sign indicating number of UE Taoist monastic name; Stop Code (stop code) is used to represent the maximum physical channel of the operable sign indicating number of UE Taoist monastic name; Stipulate in the current agreement that Start Code must be smaller or equal to StopCode, Start Code is a kind of unusual greater than Stop Code; Therefore can but be not limited to StartCode and Stop Code place-exchange, represent when promptly Start Code is greater than Stop Code that UE has been in desynchronizing state.Also can be used for indicating UE whether to be in desynchronizing state, and when RRC disposes, tell UE to adopt new frame structure at indicating bit of the last adding of original frame structure.
Whether step 304, UE are in the uplink synchronous process, if, execution in step 305, otherwise, execution in step 306;
The feedback that is meant HS-SICH has here been crossed the FPACH information of just receiving constantly; If UE has received FPACH before the HS-SICH feedback arrives constantly; Sign UE has successfully recovered uplink synchronous before the HS-SICH feedback, otherwise explanation does not recover uplink synchronous before the HS-SICH feedback arrives constantly.
Special E-RUCCH is meant the former definition of having revised E-RUCCH, makes it can carry the feedback information to the HS-PDSCH resource.Former E-RUCCH is made up of physical layer information and the up buffer area information of UE two parts, is used for the information that provides the E-DCH dispatching office to need to NodeB.But the reason that E-RUCCH sends under this kind scene is not to be that UE has upstream data to need to send; This just makes a part of cell among the former definition E-RUCCH nonsensical as to the feedback information of HS-PDSCH resource the time, can be used to carry the feedback information of UE to HS-PDSCH through defining this part cell again.
E-RUCCH is made up of Scheduling Information (schedule information) and E-RNTI (Radio Network Temporary Identifier), and existing Scheduling Information accounts for 23bits altogether, and is as shown in table 1.Again defining E-RUCCH; UE and NodeB agreement represent that as sign the E-RUCCH of this moment is the feedback to HS-PDSCH resource reception condition with the combination of one of them bit or a plurality of bits; And arrange the implication of the entrained information of all the other bits; At least comprise the ACK/NACK that is used for indicating this HS-PDSCH transmission Data Receiving correctness in all the other bits, all the other bits also carry one or more in the following information: RTBS, RMF, PATHLOSS etc.
The frame structure of amended Scheduling Information can be as shown in table 2; Arranging the 11st to 15bits is 0, the 16 to 17bits not to be that 0 expression is the feedback to the HS-PDSCH resource entirely entirely, and preceding 7bits representes PATHLOSS; 8bits is idle; 9bits is RMF, and 10bits is ACK/NACK, and the 18th to 23bits is RTBS; The frame structure of amended Scheduling Information can also be as shown in table 3; Arranging the 11st to 15bits is 0, the 16 to 19bits not to be that 0 expression is the feedback to the HS-PDSCH resource entirely entirely, and preceding 6bits representes RTBS; 7bits is RMF; 8bits is ACK/NACK, and the 9th to 10bits is idle, and last 4bits also is idle.Again define these two kinds that the method for E-RUCCH is not limited to enumerate here, as long as UE and NodeB appoint.
Table 1: existing Scheduling Information frame structure
| SNPL | UPH | TEBS | HLBS | HLID |
| 5bits | 5bits | 5bits | 4bits | 4bits |
Table 2: amended Scheduling Information frame structure
| PATHLOSS | Idle | RMF | ACK/NACK | 00000 | 01 | RTBS |
| 7bits | 1bits | 1bits | 1bits | 5bits | 2bits | 6bits |
Table 3: the another kind of frame structure of amended Scheduling Information
| RTBS | RMF | ACK/NACK | Idle | 00000 | 0001 | Idle |
| 6bits | 1bits | 1bits | 2bits | 5bits | 4bits | 4bits |
NodeB uses the feedback information of HS-SICH or E-RUCCH if in Preset Time, receive UE, then thinks bust this, carries out the scheduled transmission process again.This Preset Time length can be disposed by RNC (radio network controller) as required.
Through above-mentioned flow process, UE can use E-RUCCH to feed back under the situation of uplink loss, has avoided NodeB because of carrying out blindly retransmitting the wasting of resources that brings by receiving feedback information.
Claims (10)
1. feedback method to high-speed physics downlink sharied signal channel resource; Comprise: after user equipment (UE) is received the High-Speed Physical Downlink Shared Channel HS-PDSCH resource that base station NodeB sends; Before high-speed shared information channel HS-SICH feedback arrives constantly; If said UE is in the uplink loss state; Then UE this abandon using HS-SICH to feed back, and after uplink synchronous is accomplished, use up enhanced random to insert the E-RUCCH channel to this reception condition of NodeB feedback to the HS-PDSCH resource.
2. the method for claim 1, it is characterized in that: said method further may further comprise the steps:
(a) UE is after the HS-PDSCH channel receives data; Before the feedback of HS-SICH channel arrives constantly,, judge further then whether it is in the uplink synchronous process if judge the uplink loss state that himself is in; If be in the uplink synchronous process; After then waiting to receive physical access channel FPACH, execution in step (c), otherwise execution in step (b);
(b) said UE initiates uplink synchronous to NodeB, accomplishes uplink synchronous, execution in step (c) then;
(c) said UE uses grouping Physical Random Access Channel PRACH transmission E-RUCCH to feed back this reception condition to the HS-PDSCH resource.
3. according to claim 1 or claim 2 method is characterized in that:
Said UE judges whether it is in the uplink loss state and adopts one of following mode before the HS-SICH feedback arrives constantly:
If said UE does not carry out transfer of data in Preset Time, then judge the uplink loss state that self is in;
Said UE basis identifies with the step-out of said NodeB agreement, knows that through the indication of NodeB it is in the uplink loss state.
4. method as claimed in claim 3 is characterized in that:
Said step-out sign is meant the special filling method of certain indicating bit in the high-speed shared control channel HS-SCCH message or said HS-SCCH message.
5. according to claim 1 or claim 2 method is characterized in that:
When said UE initiated uplink synchronous to NodeB, UE sent the uplink synchronous code character that supplies E-RUCCH to use to NodeB.
6. according to claim 1 or claim 2 method is characterized in that:
Schedule information among the said E-RUCCH accounts for 23 bits altogether; When being used to feed back UE to the reception condition of HS-PDSCH resource; Said UE and NodeB agreement represent that as sign the E-RUCCH of this moment is the feedback to HS-PDSCH resource reception condition with the combination of one of them bit or a plurality of bits; And arrange the implication of the entrained information of all the other bits, comprise the ACK/NACK that is used for indicating this HS-PDSCH transmission Data Receiving correctness in all the other bits at least.
7. method as claimed in claim 6 is characterized in that:
Said sign adopts following mode to represent that the E-RUCCH of this moment is the feedback to HS-PDSCH resource reception condition:
The the 11st to 15bits is 0 entirely in the said schedule information, and the 16th to 19bits is not 0 entirely; Perhaps
The the 11st to 15bits is 0 entirely in the said schedule information, and the 16th to 17bits is not 0 entirely.
8. method as claimed in claim 6 is characterized in that: said all the other bits also carry one or more in the following information:
Be used to indicate the big or small RTBS of transmission block of UE recommendation; Be used to indicate the RMF of the modulation system that UE recommends; Path loss information PATHLOSS.
9. according to claim 1 or claim 2 method is characterized in that:
Said NodeB is as if the feedback information of constantly not receiving said UE in the HS-SICH feedback; Wait for that then said UE uses the E-RUCCH feedack; Said NodeB does not use HS-SICH or E-RUCCH feedack if in Preset Time, receive said UE; Then think bust this, carry out the scheduled transmission process again.
10. method as claimed in claim 2 is characterized in that:
In said step (b), if said UE is in the uplink synchronous process, but Preset Time to after do not receive FPACH yet, then initiate uplink synchronous to NodeB again.
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| CN102740467B (en) * | 2011-04-02 | 2016-08-24 | 华为技术有限公司 | Uplink feedback method, terminal and the base station of High-Speed Dedicated Physical Control Channel |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1434641A (en) * | 2002-01-21 | 2003-08-06 | 杨鸿文 | Resource scheduling techology without channel quality information feedback |
| EP1564953A2 (en) * | 2004-02-14 | 2005-08-17 | Samsung Electronics Co., Ltd. | Channel state information feedback method for multi-carrier communication system |
| CN1713778A (en) * | 2005-08-15 | 2005-12-28 | 中兴通讯股份有限公司 | Resource configuration of high-speed down shared channel with multiple frequency point |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1434641A (en) * | 2002-01-21 | 2003-08-06 | 杨鸿文 | Resource scheduling techology without channel quality information feedback |
| EP1564953A2 (en) * | 2004-02-14 | 2005-08-17 | Samsung Electronics Co., Ltd. | Channel state information feedback method for multi-carrier communication system |
| CN1713778A (en) * | 2005-08-15 | 2005-12-28 | 中兴通讯股份有限公司 | Resource configuration of high-speed down shared channel with multiple frequency point |
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