CN102045851B - Uplink resource allocating method and device for relay network - Google Patents
Uplink resource allocating method and device for relay network Download PDFInfo
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- CN102045851B CN102045851B CN 201110026098 CN201110026098A CN102045851B CN 102045851 B CN102045851 B CN 102045851B CN 201110026098 CN201110026098 CN 201110026098 CN 201110026098 A CN201110026098 A CN 201110026098A CN 102045851 B CN102045851 B CN 102045851B
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Abstract
The invention discloses an uplink resource allocating method for a relay network. The method comprises the steps that: a relay node receives uplink data and terminal buffer status report (BSR) sent by a terminal, caches the received uplink data, acquires the volume of the uplink data in a cache area of the terminal according to the terminal BSR, allocates the uplink resource to the terminal, and sends a relay BSR to a base station, wherein the relay BSR comprises the volume of the data cached by the relay node currently and the volume of the uplink resource allocated to the terminal. The invention also discloses a device for realizing the method. The uplink resource allocating method and the uplink source allocating device for the relay network can reduce the influence of time delay during data forwarding by a relay on terminal service, so as to guarantee the quality of service (QoS) of the terminal service.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to uplink resource allocating method and device in a kind of junction network.
Background technology
In present LTE (Long Term Evolution, Long Term Evolution) system, employing be centralized resource allocation methods.For downlink data transmission, the base station is to notify terminal that downlink data transmission is arranged by Physical Downlink Control Channel, thereby terminal receives data in corresponding resource.For transmitting uplink data, terminal is by BSR (Buffer Status Report, buffer status is reported) report own data waiting for transmission to the base station with the application ascending resource, the base station is to the corresponding ascending resource of terminal distribution, and terminal is in the enterprising line data transmission of the ascending resource that distributes.
In existing cordless communication network, the service quality that relaying is commonly used to improve signal blind zone or improves Cell Edge User, capacity and the signal quality of raising system.As shown in Figure 1, in junction network, directly not communicating by letter with terminal 16 in base station 12, but is transmitted by via node 14.Via node 14 is a plurality of terminal 16 services simultaneously.Terminal 16 will send to base station 12 to upstream data by via node 14.For terminal 16, there is the time delay of (K1+K2) ms in this process, and as shown in Figure 2, wherein, K1 is the time-delay that terminal 16 arrives between the via node 14, and K2 is that via node 14 is to the time-delay between the base station 12.Test result according to the LTE agreement, receiving terminal is handled to received signal and is had certain time delay, simultaneously because the time slot arrangement of the up-downgoing between terminal 16, via node 14 and the base station 12 is different with transmission policy, also can there be time delay in communication means based on relaying, therefore, the value of K1 and K2 depends on concrete up-downgoing transmission time slot arrangement and transmission policy and required time of receiving terminal processing.In this case, according to traditional BSR strategy, the service quality of terminal traffic can't be guaranteed, and influence the real-time of terminal traffic, and will be professional especially obvious as the VoIP influence for delay sensitive.
Therefore, demand urgently providing in a kind of improved junction network uplink resource allocating method and the device to overcome above-mentioned defective.
Summary of the invention
The technical problem to be solved in the present invention is to provide uplink resource allocating method and the device in a kind of junction network, it can reduce and utilizes relaying to carry out data to transmit time delay in the processing procedure to the influence of terminal traffic, and then assurance terminal traffic QoS (Quatility of Service, service quality).
In order to solve the problems of the technologies described above, the invention provides the uplink resource allocating method in a kind of junction network, it may further comprise the steps:
Upstream data and terminal BSR that the via node receiving terminal sends;
The described upstream data that buffer memory receives, obtain the size of upstream data in the terminal buffers district and be described terminal distribution ascending resource according to described terminal BSR; And
Send relaying BSR to the base station, comprise the size of data of described via node current cache and the size of having distributed to the ascending resource of terminal among the described relaying BSR.
Because in the uplink resource allocating method in the junction network of the present invention, the size of data that comprises described via node current cache among the relaying BSR that via node sends to the base station, and the size of having distributed to the ascending resource of terminal, that is to say, this uplink resource allocating method has been considered the time delay of network side to the response existence of ascending resource application, by via node the ascending resource demand in time delay period is carried out forecast analysis, in the ascending resource demand of in base station application ascending resource, considering during processing delay, when the base station has enough resources in advance to base station requests overabsorption resource, thereby reduced the influence of the time delay of bringing owing to the multi-hop in the junction network, and then guaranteed professional QoS.
As the preferred embodiments of the present invention, described relaying BSR also comprises the size of the ascending resource demand of prediction.Like this, can be excessive at the upstream data of end side buffer memory, the certain ascending resource of pre-first to file to the base station takes place on the Uu interface under the congested situation, and then has safeguarded the caching situation of end side.
Further, the size of data=(L during described relaying buffer memory is reported
1-L
5)+L
3+ [L
4* β], L wherein
1The size of the upstream data that the terminal that receives for via node sends, L
3Be the size of the ascending resource of distributing to terminal, L
4Be the size of the upstream data that is not satisfied in the terminal buffers, L
5Be the size of the upstream data that described via node sends to the base station, 0≤β≤1, β is the non-uniform quantizing coefficient, determines according to the size of the upstream data that is not satisfied in the described terminal buffers.
Further, when the upstream data that is not satisfied in the described terminal buffers during greater than predetermined value, β＞0.
Preferably, the step to base station transmission relaying BSR specifically comprises: the mode with periodic triggers sends described relaying BSR to the base station.
Alternatively, in the step of upstream data that the via node receiving terminal sends and terminal BSR: described terminal BSR is conventional BSR, BSR or fill BSR periodically.
The present invention also provides the distributor of the ascending resource in a kind of junction network, and it comprises: receiving element, processing unit and transmitting element, and wherein, described receiver module is used for upstream data and the terminal BSR that receiving terminal sends; The upstream data that described processing module receives for the described receiver module of buffer memory, the terminal BSR that receives according to described receiver module obtain the size of terminal buffers district upstream data and are described terminal distribution ascending resource; Described sending module is used for sending relaying BSR to the base station, comprises the size of data of described via node current cache and the size that described processing module has been distributed to the ascending resource of terminal among the described relaying BSR.
Ascending resource distributor in this junction network has been considered the time delay of network side to the response existence of ascending resource application, by via node the ascending resource demand in time delay period is carried out forecast analysis, in the ascending resource demand of in base station application ascending resource, considering during processing delay, when the base station has enough resources in advance to base station requests overabsorption resource, thereby reduced the influence of the time delay of bringing owing to the multi-hop in the junction network, and then guaranteed professional QoS.
Preferably, described processing module also is used for the size of prediction ascending resource demand, and then the relaying BSR of described sending module transmission also comprises the size of the ascending resource demand of described processing module prediction, with the caching situation of maintenance terminal side.
By following description also by reference to the accompanying drawings, it is more clear that the present invention will become, and these accompanying drawings are used for explaining embodiments of the invention.
Description of drawings
Fig. 1 is the structural representation of junction network.
Fig. 2 is the delay analysis schematic diagram that the ascending resource of junction network shown in Figure 1 distributes.
Fig. 3 is the flow chart of first embodiment of the uplink resource allocating method of junction network of the present invention.
Fig. 4 is the structural representation of an embodiment of the ascending resource distributor of junction network of the present invention.
Embodiment
With reference now to accompanying drawing, describe embodiments of the invention, the similar elements label represents similar elements in the accompanying drawing.As mentioned above, the invention provides a kind of uplink resource allocating method and device of junction network, it can reduce and utilizes relaying to carry out data to transmit time delay in the processing procedure to the influence of terminal traffic, and then guarantees the QoS of terminal traffic.
Elaborate the technical scheme of the embodiment of the invention below in conjunction with accompanying drawing.Fig. 3 is the flow chart of first embodiment of the uplink resource allocating method of junction network of the present invention.As shown in Figure 3, the uplink resource allocating method of the junction network of present embodiment comprises:
Step S301: upstream data and terminal BSR that the via node receiving terminal sends.
Alternatively, described terminal BSR can or fill BSR for conventional BSR, periodicity BSR.Conventional BSR refers to triggering when the sublayer has the band of new higher priority to send data as RLC (Radio Link Control, Radio Link control) or PDCP (Packet Data Convergence Protocol, bag data convergence protocol); Periodically BSR refers to be triggered by the control of periodicity timer; Filling BSR refers to trigger when the filling bit of MAC (Medium Access Control, medium access control) sublayer TB (Transport Block, transmission block) enough sends BSR.When RLC or PDCP do not have data etc. to be sent, cancel all BSR.Terminal is according to the BSR trigger mechanism, multiplexing upstream data and terminal BSR in MAC PDU (Packet Data Unit, bag data cell).Via node receives described upstream data and terminal BSR by the Uu interface.
Step S302: the described upstream data that buffer memory receives, obtain the size of upstream data in the terminal buffers district and be described terminal distribution ascending resource according to described terminal BSR.
Particularly, for the upstream data that comes self terminal, via node deposits in the buffer memory after receiving, and the size of data in this buffer memory is designated as L
1For the terminal BSR that receives, via node therefrom obtains the big or small L of upstream data in the terminal buffers district
2, and be the terminal distribution ascending resource, the ascending resource size of distribution is designated as L
3That is to say that size is L
3Upstream data will in a following K1 subframe (referring to Fig. 2), arrive via node.Further, described via node is the terminal distribution ascending resource according to the upstream data size in the terminal buffers, Uu interface upper signal channel quality, disturbed condition, QoS quality requirement etc. at the Uu interface.So, (L
2-L
3) for the size of the upstream data that is not satisfied in the terminal buffers, be designated as L
4
Step S303: send relaying BSR to the base station, comprise the size of data of described via node current cache and the size of having distributed to the ascending resource of terminal among the described relaying BSR.Because a via node is a plurality of Terminal Service simultaneously, so preferably adopt the mode of periodic triggers to send described relaying BSR to the base station with the application ascending resource.Obviously, send to the base station after relaying BSR and upstream data are multiplexing in MAC PDU, the size that sends to the upstream data of base station is designated as L
5
As the preferred embodiments of the present invention, also comprise the size of the ascending resource demand of prediction among the described relaying BSR.
Particularly, the size of data=(L during described relaying buffer memory is reported
1-L
5)+L
3+ [L
4* β], (L wherein
1-L
5) be the size of the data of via node current cache, L
3Be the size of the ascending resource of distributing to terminal, L
4Be the size of the upstream data that is not satisfied in the terminal buffers, 0≤β≤1, β is the non-uniform quantizing coefficient, determines according to the size of the upstream data that is not satisfied in the terminal buffers.Upstream data L as shown in table 1, as in described terminal buffers, not to be satisfied
4Greater than predetermined value x
0The time, β＞0.Work as x
0≤ L
4＜x
1The time, β=α
1Work as x
1≤ L
4＜x
2The time, β=α
2, by that analogy, α wherein
1, α
2, α
3Can pass through RRC (Radio Resource Control, Radio Resource control) configuration.That is to say to have only the big or small L of upstream data in the terminal buffers district of described terminal
4When surpassing predetermined value, via node just will consider the size of data in the end side buffer memory, to apply for ascending resource in advance to the base station.L
4Exceed predetermined value X
0The time β value α
1, α
2, α
3... configurable, and L4 is more big, and the value of β is more big, that is to say, in the following table, 0＜α
1＜α
2＜α
3...≤1.
Table 1 β value is with L
4The non-uniform change table of value
| L 4Value (Byte) | The β value |
| x 0 | 0 |
| x 0～x 1 | α 1 |
| x 1～x 2 | α 2 |
| x 2～x 3 | α 3 |
| ... | ... |
In the uplink resource allocating method of present embodiment, the described relaying BSR that sends to the base station comprises the size of the data to be sent of via node current cache, be about to arrive the size of the ascending resource demand of the size of upstream data of via node and prediction in K1ms, after the base station receives described relaying BSR, QoS quality requirement according to available resources situation, Un interface channel quality and other terminal carries out the resource distribution, thereby reduce because the time delay influence that brings to terminal traffic of relaying multi-hop, and then guarantee the QoS of terminal traffic.
Fig. 4 is the flow chart of the embodiment of the ascending resource distributor in the junction network of the present invention, as shown in Figure 4, ascending resource distributor in the junction network of present embodiment comprises receiving element 41, processing unit 42 and transmitting element 43, wherein, described receiver module 41 is used for upstream data and the terminal BSR that receiving terminal sends; The upstream data that described processing module 42 receives for the described receiver module 41 of buffer memory, the terminal BSR that receives according to described receiver module 41 obtain the size of terminal buffers district upstream data and are described terminal distribution ascending resource; Described sending module 43 is used for sending relaying BSR to the base station, comprises the size of data of described via node current cache and the size that described processing module 42 has been distributed to the ascending resource of terminal among the described relaying BSR.
Further, described processing module 42 also is used for the size of prediction ascending resource demand, and then the relaying buffer status of described sending module 43 transmissions is reported the size of the ascending resource demand that also comprises described processing module 42 predictions.
Ascending resource distributor in the junction network of present embodiment can be arranged on the via node.Because it has considered the time delay of network side to the response existence of ascending resource application, by the ascending resource demand in time delay period is carried out forecast analysis, in the ascending resource demand of in base station application ascending resource, considering during processing delay, when the base station has enough resources in advance to base station requests overabsorption resource, thereby reduced the influence of the time delay of bringing owing to the multi-hop in the junction network, and then guaranteed professional QoS.
The above only is the preferred embodiments of the present invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to do; or directly or indirectly be applied in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (1)
1. the uplink resource allocating method in the junction network is characterized in that, comprising:
The upstream data that the via node receiving terminal sends and terminal buffers state are reported;
The described upstream data that buffer memory receives, report the size of obtaining upstream data in the terminal buffers district and be described terminal distribution ascending resource according to described terminal buffers state; And
Send the relaying buffer status to the base station and report, described relaying buffer status comprises the size of data of described via node current cache and the size of having distributed to the ascending resource of terminal in reporting; Size of data during described relaying buffer status is reported=
(L 1 -L 5 )+L 3 + [L 4 * β], L wherein
1The size of the upstream data that the terminal that receives for via node sends, L
3Be the size of the ascending resource of distributing to terminal, L
4Be the size of the upstream data that is not satisfied in the terminal buffers, L
5Be the size of the upstream data that described via node sends to the base station, 0≤β≤1, β is the non-uniform quantizing coefficient, determines according to the size of the upstream data that is not satisfied in the described terminal buffers.
2. uplink resource allocating method according to claim 1 is characterized in that, described relaying buffer status is reported the size of the ascending resource demand that also comprises prediction.
3. uplink resource allocating method according to claim 2 is characterized in that, when the upstream data that is not satisfied in the described terminal buffers during greater than predetermined value, and β＞0.
4. uplink resource allocating method according to claim 3 is characterized in that, L
4More big, the value of β is more big.
5. according to each described uplink resource allocating method of claim 1-3, it is characterized in that the step that sends the report of relaying buffer status to the base station specifically comprises:
Mode with periodic triggers sends described relaying buffer status report to the base station.
6. according to each described uplink resource allocating method of claim 1-3, it is characterized in that, in the step that upstream data and the terminal buffers state of the transmission of via node receiving terminal are reported:
Described terminal buffers state is reported to conventional buffer status is reported, the periodicity buffer status is reported or filled buffer status and reports.
7. the ascending resource distributor in the junction network is characterized in that, comprising:
Receiver module is used for upstream data and the report of terminal buffers state that receiving terminal sends;
Processing module, the terminal buffers state that is used for upstream data that the described receiver module of buffer memory receives, receives according to described receiver module is reported the size of obtaining terminal buffers district upstream data and is described terminal distribution ascending resource, described processing module also is used for the size of prediction ascending resource demand, and then the relaying buffer status of sending module transmission is reported the size of the ascending resource demand that also comprises described processing module prediction; And
Sending module is used for sending the relaying buffer status to the base station and reports, and described relaying buffer status comprises the size of data of via node current cache and the size that described processing module has been distributed to the ascending resource of terminal in reporting; Size of data during described relaying buffer status is reported=
(L 1 -L 5 )+L 3 + [L 4 * β], L wherein
1The size of the upstream data that the terminal that receives for via node sends, L
3Be the size of the ascending resource of distributing to terminal, L
4Be the size of the upstream data that is not satisfied in the terminal buffers, L
5Be the size of the upstream data that described via node sends to the base station, 0≤β≤1, β is the non-uniform quantizing coefficient, determines according to the size of the upstream data that is not satisfied in the described terminal buffers.
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|---|---|---|---|---|
| GB2493784B (en) | 2011-08-19 | 2016-04-20 | Sca Ipla Holdings Inc | Wireless communications system and method |
| EP2813118A4 (en) * | 2012-02-07 | 2015-09-30 | Nokia Technologies Oy | Method and apparatus to report and handle buffer status for user equipment working in inter-site carrier aggregation mode |
| CN102665270B (en) * | 2012-05-16 | 2015-01-07 | 北京华安普惠高新技术有限公司 | Method for reducing uplink voice service transmission delay in long term evolution (LTE) system |
| CN103687037B (en) | 2012-09-12 | 2017-04-12 | 华为技术有限公司 | Resource scheduling method, equipment and communication system |
| CN104919741A (en) * | 2013-01-10 | 2015-09-16 | 美国博通公司 | Buffer status reporting for dual connection |
| WO2014113963A1 (en) * | 2013-01-25 | 2014-07-31 | 华为技术有限公司 | Uplink resource allocation method, ue and base station |
| CN104507172B (en) * | 2015-01-19 | 2019-01-22 | 中国人民解放军国防科学技术大学 | A kind of uplink scheduling method and device towards 3G/4G satellite mobile communication network |
| CN108141869B (en) * | 2015-09-18 | 2021-11-23 | 夏普株式会社 | Terminal device, base station device, and communication method |
| CN107371263B (en) * | 2016-05-12 | 2022-08-19 | 中兴通讯股份有限公司 | Method and device for scheduling uplink resources |
| CN107787018B (en) * | 2016-08-26 | 2020-05-08 | 华为技术有限公司 | Communication method, device and system |
| CN110366206A (en) * | 2018-03-26 | 2019-10-22 | 华为技术有限公司 | A kind of information transferring method and device |
| CN111800822B (en) * | 2019-08-15 | 2022-06-17 | 维沃移动通信有限公司 | Resource request method, resource allocation method, resource acquisition method, resource allocation device, resource acquisition device and resource acquisition equipment |
| EP3813459B1 (en) * | 2019-10-23 | 2023-07-19 | Robert Bosch GmbH | Terminal unit, method to operate a terminal unit, processing machine, scheduling unit, and method to operate a scheduling unit |
| CN113301604B (en) * | 2020-02-24 | 2023-04-07 | 维沃移动通信有限公司 | Buffer status reporting method, relay terminal equipment and computer readable storage medium |
| CN113923711B (en) * | 2020-07-09 | 2024-10-18 | 大唐移动通信设备有限公司 | Buffer status report reporting method, device and relay terminal |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6295285B1 (en) * | 1997-04-17 | 2001-09-25 | Lucent Technologies Inc. | Global packet dynamic resource allocation for wireless networks |
| CN101873642A (en) * | 2009-04-24 | 2010-10-27 | 大唐移动通信设备有限公司 | Method and device for reporting transmission buffering state of relay node |
| CN101933296A (en) * | 2008-02-01 | 2010-12-29 | 诺基亚西门子通信公司 | Be used for carrying out method, device and the computer program of uplink scheduling at the network that adopts via node |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5117293B2 (en) * | 2008-06-19 | 2013-01-16 | シャープ株式会社 | Base station apparatus, relay station apparatus, and communication system |
-
2011
- 2011-01-25 CN CN 201110026098 patent/CN102045851B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6295285B1 (en) * | 1997-04-17 | 2001-09-25 | Lucent Technologies Inc. | Global packet dynamic resource allocation for wireless networks |
| CN101933296A (en) * | 2008-02-01 | 2010-12-29 | 诺基亚西门子通信公司 | Be used for carrying out method, device and the computer program of uplink scheduling at the network that adopts via node |
| CN101873642A (en) * | 2009-04-24 | 2010-10-27 | 大唐移动通信设备有限公司 | Method and device for reporting transmission buffering state of relay node |
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