CN101820336A - Hybrid repeat method of multi-ray participation in cellular network - Google Patents
Hybrid repeat method of multi-ray participation in cellular network Download PDFInfo
- Publication number
- CN101820336A CN101820336A CN 201010176803 CN201010176803A CN101820336A CN 101820336 A CN101820336 A CN 101820336A CN 201010176803 CN201010176803 CN 201010176803 CN 201010176803 A CN201010176803 A CN 201010176803A CN 101820336 A CN101820336 A CN 101820336A
- Authority
- CN
- China
- Prior art keywords
- base station
- user
- information
- relaying
- downlink control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention discloses a hybrid repeat method of multi-ray participation in a cellular network, belonging to the technical field of the wireless network. The method comprises the following steps of: firstly, transmitting the data block to be transmitted and downlink control information to all relays covering the target users by a base station, and executing a second step when the information fed back to the base station by each relay is ACK (acknowledgement character), and otherwise, carrying out the repeat by the base station; secondly, transmitting the downlink control information to the user by the base station and transmitting the data block to the users by the relay; thirdly, feeding back a demodulation result to the base station by the user while monitoring the demodulation result on the way by the relay; when the ACK information is returned to the base station by the users, demodulating the user correctly, returning to the first step and transmitting the next information; when the NACK (negative acknowledgement) information is returned to the base station by the user, carrying out the hybrid repeat by the base station and the relay till the users return the ACK information. The invention improves the throughput of the system and the reliability of the transmission and reduces the bit error rate of the system; thereby, the transmission efficiency and the communication quality of the whole network are greatly improved.
Description
Technical field
What the present invention relates to is a kind of method of wireless communication technology field, specifically is the hybrid repeat method that many relayings participate in a kind of cellular network.
Background technology
Relaying will become the key technology of LTE-Advanced (improved Long Term Evolution) system as the new node of introducing in the network.The effect of relaying is mainly reflected in: enlarge the coverage of sub-district, for the dead angle of shadow fading serious area and covering in the sub-district provides service signal, the covering of hot zones and indoor covering etc. are provided, thereby improve power system capacity.Therefore the complexity of trunking is utilized relaying to carry out the sub-district covering and can be made network construction cost reduce far below the base station simultaneously.Early stage relaying just simply plays the effect that signal amplifies, and the signal that receives is directly amplified also without any processing send once more.The fatal shortcoming of this method is also to have amplified noise signal because can't distinguish useful signal and noise signal when amplifying useful signal, and user side has been produced very strong interference.Along with the raising of LTE-A to performance requirements, the function of relaying in network is powerful all the more, introduce effect that relaying reached all the more obviously.Meanwhile, mix become when retransmission technique can compensate wireless mobile channel well and multipath fading to the influence that signal transmits, become the key technology among the LTE.Mixing retransmission communication system is to comprise the forward error correction subsystem in the retransmission system.Forward error correction partly is used for correcting the mistake that often occurs in the channel, to reduce the number of times that retransmits.Thereby improve the efficient of system.Retransmit part and often do not occur in order to correct those, the incorrigible mistake of forward error correction is to improve the reliability of system.
Find through retrieval the prior art document, LG electronics, inc., " PUSCH Forwarding in TypeII Relay "--3GPP TSG RAN WG1 Meeting #57bis (transmission of Physical Shared Channel in the second class relaying)---3GPP TSG RAN WG1 Meeting#57bis) in, the author has proposed a kind of transmission method of synchronous Physical Shared Channel of non-self-adapting.This method is intended to down link and uses relaying to participate in retransmitting, to improve efficiency of transmission.But when user and repeated link are second-rate, system will have very big time-delay, low, the poor accuracy of efficiency of transmission.Simultaneously, this method is too idealized for real network, can't solve practical application.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency of the prior art, the hybrid repeat method that many relayings participate in a kind of cellular network is provided.The present invention is based under many relayings condition, by the base station self adaptation adjust and relaying for the monitoring of uplink downlink control information and shared channel, the throughput of system and the reliability of transmission have been improved, reduce the bit error rate of system, thereby improved the efficiency of transmission and the communication quality of whole network greatly.
The present invention is achieved by the following technical solutions, the present invention includes following steps:
The first step, all coverage goal users' relaying is passed to data block waiting for transmission and Downlink Control Information in the base station, when the information that feeds back to the base station when each relaying all is ACK (Acknowledge Character, acknowledge character), carries out for second step; Otherwise the base station retransmits.
Described re-transmission is meant: the base station is to the new Downlink Control Information of the relay transmission of feeding back ACK information, and to feedback NACK (Not Acknowledge Character, non-acknowledge character) relay transmission data block of information and new Downlink Control Information.
In second step, the user is passed to Downlink Control Information in the base station, and relaying is passed to the user with data block.
In the 3rd step, the user is to the base station feedback demodulation result, and relaying is on the way monitored simultaneously: when the user when ACK information is returned in the base station, the first step is returned in the then correct demodulation of user, carries out next transmission of Information; When the user when nack message is returned in the base station, base station and relaying mixing re-transmission are returned ACK information until the user.
Described mixing retransmits, and is meant: the user who feeds back NACK is passed to new Downlink Control Information and data block in the base station, and this user also passed to data block by relaying simultaneously.
The present invention guarantees to jump in the link (communicating by letter of base station and a plurality of relay wells) first, the at first correct demodulating data piece of all relayings, because base station and relaying relative fixed, and under the communication environment of reality, first jumps the communication quality optimum of link, only guaranteed first jumps the correct communication of link, could jump link (communicating by letter between relaying and user) transmission and mixing afterwards for next step second and retransmit and lay the foundation; Jump in the link first, in case there are some relayings not have correct demodulation, original Downlink Control Information will be abandoned in the base station, reselect new Downlink Control Information, reduce the possibility of deep fade like this, improve the reliability of communication quality and transmission; Jump in the transmission first of link second, the user is only passed to new Downlink Control Information in the base station, and do not need data block is passed to the user, data block sends to the user by relaying, can improve the utilization ratio of system resource like this, the base station can utilize unnecessary resource to be other user's services, thereby the further throughput that improves system is arranged; Relaying decides oneself by the control of monitoring the base station and sending and data message in retransmission processes re-transmission policy, well like this solved under practical communication environment relaying and failed correctly to receive user's problem, thereby increased the possibility of relaying mixing re-transmission, improved the throughput of system, reliability and the bit error rate that has reduced system.
Compared with prior art, the present invention is incorporated into a plurality of relayings and mixes in the mechanism that retransmits, and has increased the message capacity of system so effectively, has improved the user's communications quality; Base station and a plurality of relaying fellowship mix and retransmit, and have improved the throughput of system, and base station and relaying have constituted two antennas of virtual MIMO,, user's bit rate is improved, thereby improve the user's communications quality jointly under the condition that the user retransmits at both.
Embodiment
Below method of the present invention is further described: present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed execution mode and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment
Present embodiment may further comprise the steps:
The first step, data block waiting for transmission and Downlink Control Information are passed on three relayings of used coverage goal user in the base station, wherein two relayings return ACK information, the 3rd relaying returns nack message, base station two Downlink Control Information that relay transmission is new forward then, and to the 3rd relay transmission data block and new Downlink Control Information, at this moment, three relayings all return ACK information to the base station.
In second step, the user is passed to Downlink Control Information in the base station, and three relayings are all passed to the user with data block.
The 3rd step, the user is to the base station feedback demodulation result, simultaneously relaying is on the way monitored: what the user returned to the base station is nack message, then base station and relaying mixing re-transmission, that is: this user is passed to new Downlink Control Information and data block in the base station, and this user also passed to data block by three relayings simultaneously.
In the 4th step, the user is once more to the base station feedback demodulation result, and relaying is on the way monitored simultaneously: what this moment, the user returned to the base station is ACK information, and the first step is returned in the then correct demodulation of user, carries out next transmission of Information.
Present embodiment is simple, overcome under the second-rate situation of user and base station link in the prior art, and shortcomings such as system transmissions efficient is low, error rate height, practical, network-adaptive is strong, has improved the user's communications quality greatly.
Claims (3)
1. the hybrid repeat method that many relayings participate in the cellular network is characterized in that, may further comprise the steps:
The first step, all coverage goal users' relaying is passed to data block waiting for transmission and Downlink Control Information in the base station, when the information that feeds back to the base station when each relaying all is ACK, carries out for second step; Otherwise the base station retransmits;
In second step, the user is passed to Downlink Control Information in the base station, and relaying is passed to the user with data block;
In the 3rd step, the user is to the base station feedback demodulation result, and relaying is on the way monitored simultaneously: when the user when ACK information is returned in the base station, the first step is returned in the then correct demodulation of user, carries out next transmission of Information; When the user when nack message is returned in the base station, base station and relaying mixing re-transmission are returned ACK information until the user.
2. the hybrid repeat method that many relayings participate in the cellular network according to claim 1, it is characterized in that, re-transmission described in the first step, be meant: the base station is to the new Downlink Control Information of the relay transmission of feeding back ACK information, and to the relay transmission data block of feedback nack message and new Downlink Control Information.
3. the hybrid repeat method that many relayings participate in the cellular network according to claim 1, it is characterized in that, mixing described in the 3rd step retransmits, and is meant: the user who feeds back NACK is passed to new Downlink Control Information and data block in the base station, and this user also passed to data block by relaying simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010176803 CN101820336A (en) | 2010-05-20 | 2010-05-20 | Hybrid repeat method of multi-ray participation in cellular network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010176803 CN101820336A (en) | 2010-05-20 | 2010-05-20 | Hybrid repeat method of multi-ray participation in cellular network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101820336A true CN101820336A (en) | 2010-09-01 |
Family
ID=42655292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010176803 Pending CN101820336A (en) | 2010-05-20 | 2010-05-20 | Hybrid repeat method of multi-ray participation in cellular network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101820336A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018202193A1 (en) * | 2017-05-05 | 2018-11-08 | 华为技术有限公司 | Data transmission method, apparatus, and system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101340270A (en) * | 2007-07-04 | 2009-01-07 | 中兴通讯股份有限公司 | Hybrid automatic request retransmission method based on multi-hop relay network |
| CN101527621A (en) * | 2008-03-06 | 2009-09-09 | 中兴通讯股份有限公司 | Method for requesting descending link-to-link hybrid auto-repeat in relay network |
-
2010
- 2010-05-20 CN CN 201010176803 patent/CN101820336A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101340270A (en) * | 2007-07-04 | 2009-01-07 | 中兴通讯股份有限公司 | Hybrid automatic request retransmission method based on multi-hop relay network |
| CN101527621A (en) * | 2008-03-06 | 2009-09-09 | 中兴通讯股份有限公司 | Method for requesting descending link-to-link hybrid auto-repeat in relay network |
Non-Patent Citations (1)
| Title |
|---|
| 《北京邮电大学学报》 20100430 徐文波等 多中继协作ARQ在Nakagam im信道中的性能分析 第74-77页 1-3 第33卷, 第2期 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018202193A1 (en) * | 2017-05-05 | 2018-11-08 | 华为技术有限公司 | Data transmission method, apparatus, and system |
| CN108809532A (en) * | 2017-05-05 | 2018-11-13 | 华为技术有限公司 | A kind of data transmission method, device and system |
| US11018725B2 (en) | 2017-05-05 | 2021-05-25 | Huawei Technologies Co., Ltd. | Data transmission method, apparatus, and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10924976B2 (en) | Data throughput for cell-edge users in a cellular network | |
| US10912148B2 (en) | System and method for UE fountain relay based network | |
| CN102461004B (en) | Data communication method and device in communication system | |
| KR101857932B1 (en) | Mobile device assisted coordinated multipoint transmission and reception | |
| US9425923B2 (en) | Method, apparatus, computer program product, computer readable medium and system for fast feedback and response handling in wireless networks | |
| KR101234097B1 (en) | Triggering of cqi transmission from ue to node b for a ue in cell_fach state | |
| CN101795170B (en) | Method, receiving equipment and system for realizing data feedback | |
| US8634404B2 (en) | Mobile station, base station, mobile communication system, and communication method | |
| EP1961145B1 (en) | A method and a transmitter / receiver for reduced signaling in a retransmission system using hybrid automatic repeat | |
| US20100315957A1 (en) | System and Method for Multiple Relay Node Operation in a Communications System | |
| CN102448073B (en) | Mixed type via node, base station and mixed type trunking method | |
| CN101656600A (en) | Implementation method of opportunistic cooperation diversity protocol based on reinforced selective amplification-forwarding | |
| WO2012020918A1 (en) | Method and device for transmitting/receiving data in wireless communication system supporting relay node | |
| US9295101B2 (en) | Method in which a mobile station that supports two or more radio access technologies performs communication with two or more networks | |
| CN101873631B (en) | Processing method and system for uplink data retransmission | |
| CN102113264B (en) | Communication network element and method for transmitting data | |
| GB2506363A (en) | Method for controlling automatic repeat request (arq) retransmissions of wireless signals | |
| US20060109794A1 (en) | Communication system | |
| EP2549662A2 (en) | Method of performing retransmissions via different transmission points and related communication device | |
| CN101908954B (en) | Method and device for solving uplink transmission conflict of relay node | |
| CN108604955A (en) | Hybrid automatic repeat-request feedback scheme for the new radio of 5G | |
| CN101692620B (en) | Uplink SU-MIMO layer switching method in LTE-A | |
| CN102292927A (en) | Method and evolution base station for hybrid automatic repeat request | |
| CN101820336A (en) | Hybrid repeat method of multi-ray participation in cellular network | |
| CN102377550B (en) | The repeated link HARQ transmission method of a kind of tdd systems and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100901 |