CN101772184A - Random access feedback method, system and user terminal based on competition - Google Patents
Random access feedback method, system and user terminal based on competition Download PDFInfo
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- CN101772184A CN101772184A CN200910076478A CN200910076478A CN101772184A CN 101772184 A CN101772184 A CN 101772184A CN 200910076478 A CN200910076478 A CN 200910076478A CN 200910076478 A CN200910076478 A CN 200910076478A CN 101772184 A CN101772184 A CN 101772184A
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Abstract
The invention discloses a random access feedback method, a system and a user terminal based on competition. The method comprises the following steps: generating a feedback message by UE according to a received competition solving content message Msg4; and canceling the measuring time interval and sending the feed message by the UE when the sending time of the feedback message and the measuring time interval have the conflict. When the invention is used for random access feedback, the feedback massage is preferentially sent when the sending of the feedback message and the measuring time interval have the conflict, so eNB can receive the feedback message under any condition, the subsequent data transmission can be carried out, and the system communication performance is improved.
Description
Technical field
The present invention relates to communication technical field, particularly based on random access feedback method, system and the user terminal competed.
Background technology
In LTE (Long Term Evolution, the Long Term Evolution) random access scheme, the random access procedure of UE (user terminal) is initiated by high level or MAC (Media Access Control, medium access control) layer at present.When UE is in uplink loss, random access procedure is called asynchronous random access procedure, a kind of usual way in the asynchronous random access procedure is the access at random based on competition, process is as follows: UE is by RACH (Random Access Channel, Random Access Channel) sends Msg1 (Random Access Preamble to eNB (base station), random access sequence message), eNB is by DL (Downlink, descending)-SCH (Shared Channel, shared channel) to UE feedback Msg2 (Random AccessResponse, accidental access response message), UE sends Msg3 (Scheduled Transmission, scheduling message first) by UL (Uplink, up)-SCH to eNB then, eNB returns Msg4 (Contention Resolution, competition solves content-message) to UE.
In the random access procedure that carries out based on competition, UE may need to measure time slot simultaneously, measure time slot and be the measurement that UE carries out specially to the frequency of preparing to switch in a regular time section, when entering the measurement time slot, UE can't receive the data of eNB downlink transfer, and for transmitting uplink data, whether UE can select transmit ascending data according to self-ability.For the random access procedure based on competition, stipulate among the LTE: when the transmission of Msg1 clashes with the measurement time slot, by the still preferential gap that measures of UE decision prioritised transmission Msg1, carry out when the transmission of Msg1, then the transmission of Msg2 has precedence over the measurement time slot; When the transmission of Msg1 is carried out, the then transmission of Msg3, and HARQ (Hybrid Auto Repeat Request mixes the automatically retransmitting) feedback that receives Msg3 has precedence over the measurement time slot; Carry out when the transmission of Msg1, the reception of Msg4 also will have precedence over the measurement time slot, have precedence over UE transmitting HARQ feedback but measure time slot.
The inventor finds in the research process to prior art, receive the Msg4 of eNB downlink transfer as UE after, if compete successfully, then need to send the HARQ feedback message to eNB, but when sending the HARQ feedback message,, then can have precedence over the transmitting HARQ feedback because of measuring time slot if UE need enter the measurement time slot, thereby make UE to send the HARQ feedback message, cause eNB can't carry out follow-up transfer of data to eNB.
Summary of the invention
The object of the present invention is to provide random access feedback method, system and user terminal based on competition, to solve in the prior art when the transmission of HARQ feedback message clashes with the measurement time slot, since can't the transmitting HARQ feedback message, the problem that causes the eNB transfer of data to be interrupted.
For solving the problems of the technologies described above, the invention provides following technical scheme:
A kind of random access feedback method based on competition comprises:
UE solves content-message Msg4 according to the competition that receives and generates feedback message;
When the transmitting time of described feedback message clashed with the measurement time slot, the UE cancellation was measured time slot and is also sent described feedback message.
Also comprise:
Judge the information that whether comprises among the described Msg4 with described UE coupling, if then carry out the step that Msg4 that described basis receives generates feedback message; Otherwise, confirm the access failure at random that described UE competes.
Whether comprising the information of mating with described UE among the described Msg4 of judgement comprises:
When described UE initial access network, or described UE judges the ID that whether comprises described UE among the described Msg4 when being in Radio Link connection failure state;
When described UE is in switching state, or described UE judges the C-RNTI that whether comprises described UE among the described Msg4 when being in Radio Link control connection state.
The Msg4 that described basis receives also comprises after generating feedback message:
Determine the transmitting time of described feedback message according to the time of reception of described Msg4;
Obtain pre-configured measurement time slot;
Whether transmitting time and the described measurement time slot of judging described feedback message clash.
Also comprise:
When the transmitting time of described feedback message does not clash with the measurement time slot, directly send described feedback message.
A kind of access reponse system at random based on competition comprises: UE and base station,
Described UE is used for solving content-message Msg4 according to the competition that receives and generates feedback message, and when the transmitting time of described feedback message clashed with the measurement time slot, cancellation was measured time slot and sent described feedback message to described base station;
Described base station, be used to receive described feedback message after, carry out transfer of data with described UE.
A kind of user terminal comprises:
Message generation unit is used for solving content-message Msg4 according to the competition that receives and generates feedback message;
The feedback performance element is used for when the transmitting time of described feedback message clashes with the measurement time slot, and cancellation is measured time slot and also sent described feedback message.
Also comprise:
The matching judgment unit is used for judging whether described Msg4 comprises the information of mating with described user terminal;
Described message generation unit is used for generating feedback message according to described Msg4 when the described Msg4 of described matching judgment unit judges comprises the information of mating with described user terminal;
The failure confirmation unit is used for when the described Msg4 of described matching judgment unit judges does not comprise the information of mating with described user terminal, confirms the access failure at random of described user terminal competition.
Described matching judgment unit comprises:
The first matching judgment unit is used for when described user terminal initial access network, or described user terminal is judged the ID that whether comprises described user terminal among the described Msg4 when being in Radio Link connection failure state;
The second matching judgment unit is used for judging the C-RNTI that whether comprises described user terminal among the described Msg4 when described user terminal is in Radio Link control connection state.
Also comprise:
The time determining unit is used for determining according to the time of reception of described Msg4 the transmitting time of described feedback message;
Time acquisition unit is used to obtain pre-configured measurement time slot;
The conflict judging unit is used to judge whether the transmitting time of described feedback message and described measurement time slot clash.
Described feedback performance element also is used for, and when the transmitting time of described feedback message does not clash with the measurement time slot, directly sends described feedback message.
By above technical scheme provided by the invention as seen, UE generates feedback message according to the Msg4 that receives, and when the transmitting time of feedback message clashed with the measurement time slot, the UE cancellation was measured time slot and sent feedback message.Using the present invention inserts when feeding back at random, owing to when the transmission of feedback message clashes with the measurement time slot, preferentially send feedback message, so eNB can under any circumstance receive feedback message, and carry out follow-up transfer of data, improved the performance of system communication.
Description of drawings
Fig. 1 is the first embodiment flow chart that the present invention is based on the random access feedback method of competition;
Fig. 2 is the second embodiment flow chart that the present invention is based on the random access feedback method of competition;
Fig. 3 is the 3rd embodiment flow chart that the present invention is based on the random access feedback method of competition;
Fig. 4 is the embodiment block diagram that inserts reponse system at random that the present invention is based on competition;
Fig. 5 is the first embodiment block diagram of user terminal of the present invention;
Fig. 6 is the second embodiment block diagram of user terminal of the present invention.
Embodiment
Core of the present invention provides the random access feedback method based on competition, and UE generates feedback message according to the Msg4 that receives, and when the transmitting time of feedback message clashed with the measurement time slot, the UE cancellation was measured time slot and sent feedback message.
In order to make those skilled in the art person understand the present invention program better, and above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Feedback method of the present invention is applied in the random access procedure that UE is at war with, inserting the reason that produces at random comprises: UE initial access network (inserting from the RRC_IDLE state), perhaps UE is in Radio Link connection failure state, perhaps UE is in the sub-district switching state, there are the DL data to arrive when perhaps UE is in RRC_CNNECTED (Radio Link control connection) state, have the UL data to arrive when perhaps UE is in the RRC_CNNECTED state.
The present invention is based on competition random access feedback method the first embodiment flow process as shown in Figure 1:
Step 101:UE generates feedback message according to the Msg4 that receives.
UE judges the information that whether comprises among this Msg4 with UE coupling after receiving Msg4, if when the information of coupling is arranged, generate feedback message according to Msg4.Wherein, when the UE initial access network, or UE judges the ID (sign) that whether comprises UE among the Msg4 when being in Radio Link connection failure state; When UE is in Radio Link control connection state, judge the C-RNTI (Cell Radio Network Temporary Identity, wireless cellular network is discerned temporarily) that whether comprises UE among the Msg4.
Step 102: when the transmitting time of feedback message clashed with the measurement time slot, the UE cancellation was measured time slot and is sent feedback message to the base station.
The present invention is based on competition random access feedback method the second embodiment flow process as shown in Figure 2, this embodiment is an example with the situation of UE initial access network, show in detail based on the competition the feedback procedure of access at random:
Receive Msg4 in the step 201:UE initial access network process.
Behind the UE initial access network, at first carry out the access process at random based on competition, this process is consistent with the description of prior art, be that UE sends Msg1 by RACH to eNB, eNB feeds back Msg2 by DL-SCH to UE, and UE sends Msg3 by UL-SCH to eNB then, and eNB returns Msg4 to UE.
Step 202: judge the ID that whether comprises UE among the Msg4, if then execution in step 203; Otherwise, execution in step 208.
When the UE initial access network, Msg4 refers to that the message transmitted, the UE information that comprises in this message are the above UE ID of MAC layer on DL-SCH, just carry out the step of generation HARQ feedback message this moment when UE finds the UE ID of self correspondence in Msg4, otherwise, do not generate any feedback message.
Step 203: generate the HARQ feedback message according to Msg4.
Step 204: determine the transmitting time of HARQ feedback message according to the time of reception of Msg4, and obtain pre-configured measurement time slot.
Step 205: judge whether the transmitting time of HARQ feedback message and measurement time slot clash, if then execution in step 206, otherwise execution in step 207.
Time slot is measured in step 206:UE cancellation.
Step 207:UE sends the HARQ feedback message to eNB, finishes current flow process.
Step 208: confirm the access failure at random of UE competition, finish current flow process.
By the foregoing description as seen, the present invention is when the UE initial access network, when the transmission of HARQ feedback message clashes with the measurement time slot, the preferential HARQ feedback message that sends, therefore eNB can under any circumstance receive this HARQ feedback message, and carry out follow-up transfer of data, improved the performance of system communication.Need to prove that the feedback procedure of the feedback procedure when UE is in Radio Link connection failure state during with above-mentioned initial access network is consistent, does not repeat them here.
The present invention is based on competition random access feedback method the 3rd embodiment flow process as shown in Figure 3, it is example that this embodiment is in switching state with UE, show in detail based on the competition the feedback procedure of access at random:
Step 301:UE receives Msg4 in handoff procedure.
Step 302: judge the C-RNTI that whether comprises UE among the Msg4, if then execution in step 303; Otherwise, execution in step 308.
When UE switches, Msg4 refers to dispatch PDCCH (the PhysicalDownlink Control Channel of UL-SCH, DL-SCH, the specific schedule signaling of carrying downlink physical control channel), the UE information that comprises in this signaling is C-RNTI, this moment is when finding the C-RNTI of self correspondence as UE in Msg4, message on decoding UL-SCH and the DL-SCH, and determine whether to send the HARQ feedback message according to decoded results.
Step 303: generate the HARQ feedback message according to Msg4.
Step 304: determine the transmitting time of HARQ feedback message according to the time of reception of Msg4, and obtain pre-configured measurement time slot.
Step 305: judge whether the transmitting time of HARQ feedback message and measurement time slot clash, if then execution in step 306, otherwise execution in step 307.
Time slot is measured in step 306:UE cancellation.
Step 307:UE sends the HARQ feedback message to eNB, finishes current flow process.
Step 308: confirm the access failure at random of UE competition, finish current flow process.
By the foregoing description as seen, the present invention works as UE switches, when the transmission of HARQ feedback message clashes with the measurement time slot, the preferential HARQ feedback message that sends, therefore eNB can under any circumstance receive this HARQ feedback message, and carry out follow-up transfer of data, improved the performance of system communication.Need to prove that the feedback procedure when UE is in Radio Link control connection state is consistent with above-mentioned feedback procedure when being in switching state, does not repeat them here.
Corresponding with the random access feedback method that the present invention is based on competition, the present invention also provides system that realizes this feedback method and the user terminal of carrying out this feedback method.
The embodiment block diagram that inserts reponse system at random that the present invention is based on competition as shown in Figure 4, this system comprises: UE410 and base station 420.
Wherein, UE410 is used for solving content-message Msg4 according to the competition that receives and generates feedback message, and when the transmitting time of described feedback message clashed with the measurement time slot, cancellation was measured time slot and sent described feedback message to described base station 420; After base station 420 is used to receive described feedback message, carry out transfer of data with described UE410.
The first embodiment block diagram of user terminal of the present invention as shown in Figure 5, this user terminal comprises: message generation unit 510 and feedback performance element 520.
Wherein, message generation unit 510 is used for solving content-message Msg4 generation feedback message according to the competition that receives; Feedback performance element 520 is used for when the transmitting time of described feedback message clashes with the measurement time slot, and cancellation is measured time slot and also sent described feedback message.
The second embodiment block diagram of user terminal of the present invention as shown in Figure 6, this user terminal comprises: matching judgment unit 610, message generation unit 620, time determining unit 630, time acquisition unit 640, conflict judging unit 650, feedback performance element 660 and failure confirmation unit 670.
Wherein, matching judgment unit 610 is used for judging whether described Msg4 comprises the information of mating with described user terminal; Message generation unit 620 is used for generating feedback message according to described Msg4 when described matching judgment unit 610 judges that described Msg4 comprises the information of mating with described user terminal; Time determining unit 630 is used for determining according to the time of reception of described Msg4 the transmitting time of described feedback message; Time acquisition unit 640 is used to obtain pre-configured measurement time slot; Conflict judging unit 650 is used to judge whether the transmitting time of described feedback message and described measurement time slot clash; Feedback performance element 660 is used for when described conflict judging unit 650 judges that the transmitting time of feedback message clashes with the measurement time slot, cancellation is measured time slot and is sent described feedback message, when described conflict judging unit 650 judges that the transmitting time of feedback message does not clash with the measurement time slot, directly send described feedback message; Failure confirmation unit 670 is used for confirming the access failure at random of described user terminal competition when described matching judgment unit 610 judges that described Msg4 does not comprise the information of mating with described user terminal.
Wherein, matching judgment unit 610 can comprise as lower unit (not shown among Fig. 6): the first matching judgment unit, be used for when described user terminal initial access network, or described user terminal is judged the ID that whether comprises described user terminal among the described Msg4 when being in Radio Link connection failure state; The second matching judgment unit is used for judging the C-RNTI that whether comprises described user terminal among the described Msg4 when described user terminal is in Radio Link control connection state.
As seen through the above description of the embodiments, UE generates feedback message according to the Msg4 that receives, and when the transmitting time of feedback message clashed with the measurement time slot, the UE cancellation was measured time slot and sent feedback message.Using the present invention inserts when feeding back at random, owing to when the transmission of feedback message clashes with the measurement time slot, preferentially send feedback message, so eNB can under any circumstance receive feedback message, and carry out follow-up transfer of data, improved the performance of system communication.
Those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product can be stored in the storage medium, as ROM/RAM, magnetic disc, CD etc., comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of some part of each embodiment of the present invention or embodiment.
Above-described embodiment of the present invention does not constitute the qualification to protection range of the present invention.Any modification of being done within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. the random access feedback method based on competition is characterized in that, comprising:
UE solves content-message Msg4 according to the competition that receives and generates feedback message;
When the transmitting time of described feedback message clashed with the measurement time slot, the UE cancellation was measured time slot and is also sent described feedback message.
2. method according to claim 1 is characterized in that, also comprises:
Judge the information that whether comprises among the described Msg4 with described UE coupling, if then carry out the step that Msg4 that described basis receives generates feedback message; Otherwise, confirm the access failure at random that described UE competes.
3. method according to claim 2 is characterized in that, whether comprises the information of mating with described UE among the described Msg4 of judgement and comprises:
When described UE initial access network, or described UE judges the ID that whether comprises described UE among the described Msg4 when being in Radio Link connection failure state;
When described UE is in Radio Link control connection state, judge that the wireless cellular network that whether comprises described UE among the described Msg4 discerns C-RNTI temporarily.
4. method according to claim 1 is characterized in that, the Msg4 that described basis receives also comprises after generating feedback message:
Determine the transmitting time of described feedback message according to the time of reception of described Msg4;
Obtain pre-configured measurement gap information;
Whether transmitting time and the described measurement time slot of judging described feedback message clash.
5. according to any described method of claim 1 to 4, it is characterized in that, also comprise:
When the transmitting time of described feedback message does not clash with the measurement time slot, directly send described feedback message.
6. the access reponse system at random based on competition is characterized in that, comprising: UE and base station,
Described UE is used for solving content-message Msg4 according to the competition that receives and generates feedback message, and when the transmitting time of described feedback message clashed with the measurement time slot, cancellation was measured time slot and sent described feedback message to described base station;
Described base station, be used to receive described feedback message after, carry out transfer of data with described UE.
7. a user terminal is characterized in that, comprising:
Message generation unit is used for solving content-message Msg4 according to the competition that receives and generates feedback message;
The feedback performance element is used for when the transmitting time of described feedback message clashes with the measurement time slot, and cancellation is measured time slot and also sent described feedback message.
8. user terminal according to claim 7 is characterized in that, also comprises:
The matching judgment unit is used for judging whether described Msg4 comprises the information of mating with described user terminal;
Described message generation unit is used for generating feedback message according to described Msg4 when the described Msg4 of described matching judgment unit judges comprises the information of mating with described user terminal;
The failure confirmation unit is used for when the described Msg4 of described matching judgment unit judges does not comprise the information of mating with described user terminal, confirms the access failure at random of described user terminal competition.
9. user terminal according to claim 8 is characterized in that, described matching judgment unit comprises:
The first matching judgment unit is used for when described user terminal initial access network, or described user terminal is judged the ID that whether comprises described user terminal among the described Msg4 when being in Radio Link connection failure state;
The second matching judgment unit is used for judging the C-RNTI that whether comprises described user terminal among the described Msg4 when described user terminal is in Radio Link control connection state.
10. user terminal according to claim 7 is characterized in that, also comprises:
The time determining unit is used for determining according to the time of reception of described Msg4 the transmitting time of described feedback message;
Time acquisition unit is used to obtain pre-configured measurement time slot;
The conflict judging unit is used to judge whether the transmitting time of described feedback message and described measurement time slot clash.
11. according to any described user terminal of claim 7 to 10, it is characterized in that described feedback performance element also is used for, when the transmitting time of described feedback message does not clash with the measurement time slot, directly send described feedback message.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102340885A (en) * | 2011-11-07 | 2012-02-01 | 电信科学技术研究院 | Transmission carrier indicating and confirming method and equipment for random access response message |
| WO2014029092A1 (en) * | 2012-08-22 | 2014-02-27 | 华为技术有限公司 | Access method, equipment, and base station |
| WO2017028046A1 (en) * | 2015-08-14 | 2017-02-23 | 华为技术有限公司 | Method and apparatus for selecting gap |
| WO2019113753A1 (en) * | 2017-12-11 | 2019-06-20 | 北京小米移动软件有限公司 | Method, device, user equipment and base station for use in shortening access delay |
| CN110710146A (en) * | 2017-06-16 | 2020-01-17 | 摩托罗拉移动有限责任公司 | Method and device for transmitting HARQ-ACK feedback on uplink control channel |
| WO2020063943A1 (en) * | 2018-09-28 | 2020-04-02 | 中兴通讯股份有限公司 | Information sending method and device, and information receiving method and device |
| CN112385282A (en) * | 2018-06-29 | 2021-02-19 | 上海诺基亚贝尔股份有限公司 | Uplink skipping during random access procedure |
| WO2023001266A1 (en) * | 2021-07-23 | 2023-01-26 | 维沃移动通信有限公司 | Contention resolution method for random access process, terminal, and network side device |
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| CN101098297B (en) * | 2006-06-30 | 2010-07-28 | 大唐移动通信设备有限公司 | Random access method and pilot code extending method |
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| CN102340885A (en) * | 2011-11-07 | 2012-02-01 | 电信科学技术研究院 | Transmission carrier indicating and confirming method and equipment for random access response message |
| WO2014029092A1 (en) * | 2012-08-22 | 2014-02-27 | 华为技术有限公司 | Access method, equipment, and base station |
| US9730189B2 (en) | 2012-08-22 | 2017-08-08 | Huawei Technologies Co., Ltd. | Accessing method, equipment and base station |
| WO2017028046A1 (en) * | 2015-08-14 | 2017-02-23 | 华为技术有限公司 | Method and apparatus for selecting gap |
| CN107852622A (en) * | 2015-08-14 | 2018-03-27 | 华为技术有限公司 | Clearance G ap systems of selection and device |
| CN107852622B (en) * | 2015-08-14 | 2020-04-14 | 华为技术有限公司 | Gap selection method and device |
| CN110710146A (en) * | 2017-06-16 | 2020-01-17 | 摩托罗拉移动有限责任公司 | Method and device for transmitting HARQ-ACK feedback on uplink control channel |
| CN110710146B (en) * | 2017-06-16 | 2023-03-28 | 摩托罗拉移动有限责任公司 | Method and device for transmitting HARQ-ACK feedback on uplink control channel |
| WO2019113753A1 (en) * | 2017-12-11 | 2019-06-20 | 北京小米移动软件有限公司 | Method, device, user equipment and base station for use in shortening access delay |
| US11252644B2 (en) | 2017-12-11 | 2022-02-15 | Beijing Xiaomi Mobile Software Co., Ltd. | Method, device, user equipment and base station for use in shortening access delay |
| CN112385282A (en) * | 2018-06-29 | 2021-02-19 | 上海诺基亚贝尔股份有限公司 | Uplink skipping during random access procedure |
| WO2020063943A1 (en) * | 2018-09-28 | 2020-04-02 | 中兴通讯股份有限公司 | Information sending method and device, and information receiving method and device |
| US11974322B2 (en) | 2018-09-28 | 2024-04-30 | Zte Corporation | Method and device for sending information, and method and device for receiving information |
| WO2023001266A1 (en) * | 2021-07-23 | 2023-01-26 | 维沃移动通信有限公司 | Contention resolution method for random access process, terminal, and network side device |
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| CN101772184B (en) | 2012-05-30 |
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