CN102781100A - Configuration method and system for newly increased backhaul subframe - Google Patents
Configuration method and system for newly increased backhaul subframe Download PDFInfo
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- CN102781100A CN102781100A CN 201110122758 CN201110122758A CN102781100A CN 102781100 A CN102781100 A CN 102781100A CN 201110122758 CN201110122758 CN 201110122758 CN 201110122758 A CN201110122758 A CN 201110122758A CN 102781100 A CN102781100 A CN 102781100A
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- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
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Abstract
The invention discloses a configuration method and device for a newly increased backhaul subframe, which are used for solving the configuration problem of the newly increased backhaul subframe. The method comprises the following steps that a network side configures the newly increased backhaul subframe through a signaling configuration or a fixed configuration way; a receiving side receives the backhaul subframe according to the configuration; the signaling configuration way adopts top signaling or physical layer signaling; the configuration of the newly increased backhaul subframe is retained unchanged under the fixed configuration way, or when the configuration of the newly increased backhaul subframe is enabled, the configuration is retained unchanged. The method and the device provided by the invention can be suitably used for the link from a base station to a relay node, and the flexibility of the backhaul link is improved; thus, the backward compatibility is ensured, and the configuration problem of the newly increased relay link subframe is solved.
Description
Technical field
The present invention relates to the mobile communication technology field; Relate in particular to (the Long Term Evolution of LTE among the 3GPP; Long evolving system), the collocation method and the system of newly-increased backhaul subframe among the LTE-A (Long Term Evolution Advanced, senior long evolving system).
Background technology
Introduce RN (Relay Node in the LTE-A system; Via node) increased new link afterwards; Corresponding term comprises: the link between eNode-B and the RN is called the link that the link between backhaul link (back haul link or repeated link), RN and the UE (User Equipment, subscriber equipment) is called between access link (access link), eNode-B and the UE and is called direct link (link direct transfers).
In adopting band during relaying inband-relay, promptly eNode-B to relay link and relay to the UE link operation on identical frequency resource.Because the inband-relay launching opportunity produces interference (disturbing certainly) to the receiver of oneself, so eNode-B on identical frequency resource is impossible with relay simultaneously to the UE link to the relay link, only if enough Signal Separation and isolation between antennas are arranged.Similar, relay also can not launch to eNode-B when receiving the data that UE launched again.The solution of a possible transmitting-receiving interference problem is to make relay when the data that receive from eNode-B; Do not carry out firing operation to UE; That is to say at relay and behind the UE link, need to increase " gap "; Through configuration Multicast Broadcast Single Frequency Network (Multicast Broadcast Single Frequency Network; MBSFN) subframe (subframe) is used for backhaul subframe, make UE in " gap " time range, not carry out any reception/firing operation, and Relay accomplishes the switching that is transmitted into reception in " gap " time range; (Orthogonal Frequency Division Multiplexing, OFDM) symbol receives the data from eNB at OFDM at the back after switching completion.In LTE, adopt MBSFN subframe to be used for backhaul subframe at present; Its concrete mode is: MCE (MBMS Control Entity; The multimedia controlled entity) at first to the available MBSFN subframe of eNode-B configuration, eNode-B is the available backhaul subframe of configuration in these available MBSFNsubframe again.
According to the regulation in the present LTE system, 1 10ms radio frames frame is made up of the subframe subframe of 10 1ms, and is as shown in Figure 2; Can comprise Unicast (clean culture) and Multicast Broadcast (multicast and broadcast), wherein when FDD (Frequency Division Duplex, FDD) mode; #0, #5 subframe are as the emission synchronizing signal; And #4, #9 subframe are as paging paging, when TDD (Time Division Duplex, time division duplex) mode; #0, #5 subframe are as the emission synchronizing signal; And #1, #6 subframe that is to say for FDD{#0, #4, #5, #9} subframe that as paging paging TDD{#0, #1, #5, #6} subframe have above-mentioned special purpose; So can not be used for the distribution of MBSFN subframe, promptly assignable MBSFN subframe is at most 6 sub-frame subframe in 1 radio frames frame.
Foregoing that is to say always have 4 sub-frame can not be used for the transmission of backhaul in 1 radio frames, and the time resource utilization of backhaul is both insufficient also dumb, looks similarly to be " time hole ".FDD standard in the existing LTE-A system; Corresponding return subframe (being the back haul link subframe) is distributed the bitmap mode that adopts 8bits; Be the respectively corresponding different backhaul sub-frame configuration of binary system of 8bits, but the bitmap of 8bits is that { #0, #4, #5, #9} are invalid to the descending sub frame index.In 1 radio frames except above-mentioned 6 sub-frame; Other subframes (being that DL subframe index is the subframe of #0, #4, #5, #9 correspondence) are if be used for the transmission of backhaul; Then these subframes are referred to as newly-increased backhaul subframe, and the configuration that how to increase the backhaul subframe newly the present invention's problem that will solve just.
Relevant predicate in this invention:
Descending sub frame DL subframe number=10*SFN+ descending sub frame index DL subframe index
Sub-frame of uplink UL subframe number=10*SFN+ sub-frame of uplink index UL subframe index
SFN representes System Frame Number System Frame Number;
The index of 10 subframe that DL subframe index representes to comprise among 1 frame, its scope is (#0, #1, #2, #3, #4, #5, #6, #7, #8, #9);
The index of 10 subframe that UL subframe index representes to comprise among 1 frame, its scope is (#0, #1, #2, #3, #4, #5, #6, #7, #8, #9).
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of collocation method and device of newly-increased backhaul subframe, is used to solve the allocation problem of newly-increased backhaul subframe.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of collocation method of newly-increased backhaul subframe, this method is:
Network side is through the signaling configuration or the fixed configurations mode disposes newly-increased backhaul subframe.
Said newly-increased backhaul subframe has the backhaul subframe structure of confirming according to said configuration, and receiver side carries out the reception of backhaul subframe according to configuration.
Said signaling configuration mode is: network side adopts high-level signaling or physical layer signaling that said newly-increased backhaul subframe is configured.
Further; In via node configuration messages RNReconfiguration message or via node subframe configuration information cell RN-SubframeConfig information element, increase said high-level signaling, or increase independently said high-level signaling; Or in descending control information format DCI format signaling, increase said physical layer signaling;
Further, said employing high-level signaling or physical layer signaling are configured said newly-increased backhaul subframe and are specially: use each newly-increased backhaul subframe of the corresponding configuration of bitmap bitsmap of X bit, or use newly-increased backhaul subframe of the only corresponding configuration of binary condition of Y bit; Or newly-increased backhaul subframe set of the only corresponding configuration of the binary condition of using Z bit; X=M wherein, Y=ceil (log2 (M)), Z=ceil (log2 (N)); M allows newly-increased backhaul number of sub frames in the system; N allows newly-increased backhaul subframe set number in the system, ceil representes the computing that rounds up, and log2 representes that with 2 be the logarithm operation at the end.
Said fixed configurations mode is: the configuration to said newly-increased backhaul subframe remains unchanged always, or the configuration of said newly-increased backhaul subframe remains unchanged when enabling always.
Further, the configuration of said newly-increased backhaul subframe is remained unchanged always be meant fixing several newly-increased backhaul subframes of using.
Remain unchanged when further, the configuration of said newly-increased backhaul subframe enables always and be meant:
To said newly-increased backhaul subframe enable signaling when effective, fixing several newly-increased backhaul subframes of using, to said newly-increased backhaul subframe enable signaling when invalid, do not use newly-increased backhaul subframe in the system.
Preferably, said enable signaling use 1 bit binary condition represent to said newly-increased backhaul subframe to enable signaling effective or invalid.
Preferably; In via node configuration messages RNReconfiguration message or via node subframe configuration information cell RN-SubframeConfig information element, increase the said signaling that enables; Or increase the independently said signaling that enables, or in descending control information format DCI format, increase the said signaling that enables.
Further, when said newly-increased backhaul subframe was in-band method, the structure of other backhaul subframes in the structure of said newly-increased backhaul subframe and the system in the same radio frames was identical; When said newly-increased backhaul subframe is out-band method, access link subframe structure in the structure of newly-increased backhaul subframe and the system, or the link subframe structure that direct transfers, or the structure of other backhaul subframes in the same radio frames is identical.
Further, said network side comprises one or more in the following entity: base station eNB, via node RN, cell cooperative entity MCE, gateway GW, mobility management apparatus MME, Evolved UTRAN EUTRAN, operational administrative and safeguard the OAM manager; Said receiver side comprises one or more in the following entity: base station eNB, via node RN, user equipment (UE).
Based on the embodiment of the invention, the present invention also provides a kind of configuration-system of newly-increased backhaul subframe, and this system comprises:
Network side is used for through the signaling configuration or the fixed configurations mode disposes newly-increased backhaul subframe;
Receiver side is used for carrying out according to the configuration of network side the reception of backhaul subframe.
The function of the part of said system and interactive relation are referring to the embodiment of the invention.
To sum up, adopt the method for the invention, a kind of collocation method of newly-increased backhaul subframe is provided; Can be applicable to well that the base station arrives the via node link; Improve the back haul link flexibility, both guaranteed backwards compatibility (compatible LTE system), also solved the problem of newly-increased repeated link sub-frame configuration.
Description of drawings
Fig. 1 is the link structure sketch map that contains via node;
Fig. 2 is the frame structure sketch map of radio frames;
The wireless frame structure sketch map that Fig. 3 adopts bitmap that newly-increased backhaul subframe is configured in high-level signaling or physical layer signaling for the embodiment of the invention one;
Fig. 4 only disposes the wireless frame structure sketch map of 1 newly-increased backhaul subframe in high-level signaling or physical layer signaling for the embodiment of the invention two;
Fig. 5 only disposes the wireless frame structure sketch map of 1 newly-increased backhaul subframe set in high-level signaling or physical layer signaling for the embodiment of the invention two;
Fig. 6 disposes newly-increased backhaul subframe working method sketch map for the embodiment of the invention nine adopts the fixed configurations mode.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, below lift embodiment and with reference to accompanying drawing, to further explain of the present invention.
Instance one:
This embodiment adopts 4bits bitmap that newly-increased backhaul subframe is configured at high-level signaling or physical layer signaling; As shown in Figure 3; 4bits is that the subframe of #4, #9 is the descending backhaul subframe that increases newly for " 0101 " expression DL subframe index in the present embodiment; Accordingly, the UL subframeindex that adds the 4ms time interval is that the subframe of #8, #3 can be used as newly-increased up backhaul subframe.
Said 4bits bitmap also can directly dispose UL subframe index and be newly-increased up backhaul subframe, and is corresponding, and the DL subframe index that subtracts the 4ms time interval is newly-increased descending backhaul subframe, and other instance is no longer tired to be stated.
Instance two:
This embodiment adopts 2bits only to dispose a newly-increased backhaul subframe at high-level signaling or physical layer signaling; Preferably; The optional bit combination state of 2bits and order (" 00 ", " 01 ", " 10 ", " 11 ") may be used to indicate DL subframe index, no longer tired later on stating.For example 2 bits " 00 " expression DL subframe index is #0 in this example, and " 01 " expression DL subframe index is #4, and " 10 " expression DL subframe index is #5, and " 11 " expression DL subframe index is #9.What show among Fig. 4 is the situation of 2 bits " 11 ", and expression DL subframe index is that the subframe of #9 is the descending backhaul subframe that increases newly, and corresponding, the UL subframe index that adds the 4ms time interval is that the subframe of #3 can be used as newly-increased up backhaul subframe.
Instance three:
This embodiment adopts 2bits only to dispose a newly-increased backhaul subframe set at high-level signaling or physical layer signaling; Preferably; The optional bit combination state of 2bits and order (" 00 ", " 01 ", " 10 ", " 11 ") may be used to indicate DL subframe index set, no longer tired later on stating.For example 2 bits " 00 " expression DL subframe index is that { #0#4}, " 01 " expression DL subframe index are that { #5#9}, " 10 " expression DL subframe index is { #0#4#5#9} in this example.What show among Fig. 5 is the situation of 2 bits " 01 "; Expression DL subframe index is for { subframe of #5#9} is the descending backhaul subframe that increases newly; Accordingly, the UL subframe index that adds the 4ms time interval is for { subframe of #9#3} can be used as newly-increased up backhaul subframe.
Instance four:
This embodiment increases high-level signaling and is used to indicate newly-increased backhaul subframe in via node subframe configuration information cell (RN-SubframeConfig information element); Preferably; The signaling of the newly-increased backhaul subframe of this signaling called after " FDD-IncreasedSubframeConfig-r10 " expression, example is following:
Wherein M is the newly-increased backhaul number of sub frames of permission in the system, and N allows newly-increased backhaul subframe set number in the system.
Preferably; Said FDD-IncreasedSubframeConfig-r10 also can be carried in the via node configuration messages (RNReconfiguration message), or provided by the invention that said FDD-IncreasedSubframeConfig-r10 is independent as message m essage or information cell information is element.
Instance five:
This embodiment increases physical layer signaling and is used to indicate newly-increased backhaul subframe in descending control information format (Download Control Information format, DCI format) signaling; Preferably, any DCI format can increase said physical layer signaling in the LTE/LTE-A system, for example in DCI format 1, increases each newly-increased backhaul subframe of bitsmap configuration of X bits; Or the binary condition of Ybits only disposes a newly-increased backhaul subframe, or the binary condition of Z bits only disposes newly-increased backhaul subframe set, wherein an X=M; Y=ceil (log2 (M)); Z=ceil (log2 (N)), M are the newly-increased backhaul number of sub frames of permission in the system, and N allows newly-increased backhaul subframe set number in the system; Ceil representes the computing that rounds up, and log2 representes that with 2 be the logarithm operation at the end.
Instance six:
Among this embodiment; Adopting fixed configurations mode configurating downlink subframe index DL subframe index is the descending backhaul subframe of subframe for increasing newly of #0, #4, #5, #9; And remain unchanged always; Accordingly, the UL subframe index that adds the 4ms time interval is that the subframe of #4, #8, #9, #3 can be used as newly-increased up backhaul subframe, and remains unchanged always.
Instance seven:
Among this embodiment; Adopting fixed configurations mode configurating downlink subframe index DL subframe index is the descending backhaul subframe of subframe for increasing newly of #0, #4, #5, #9; When enabling signaling when effective, said fixed configurations remains unchanged always, and is corresponding; The UL subframe index that adds the 4ms time interval is that the subframe of #4, #8, #9, #3 can be used as newly-increased up backhaul subframe, and remains unchanged always; When enabling signaling when invalid, do not use newly-increased backhaul subframe in the system.
Instance eight:
This embodiment increases the signaling that 1 bit bit is used to indicate whether to enable new backhaul subframe in " RN-SubframeConfig information element "; Preferably; The newly-increased backhaul subframe of this signaling called after enables indication (FDD-EnableIncreasedSubframeConfig-r10); It is effective when this signaling is " 1 ", to represent to enable signaling, and it is invalid to represent to enable signaling during for " 0 ", and vice versa.
Preferably; Described FDD-EnableIncreasedSubframeConfig-r10 signaling also can be carried in the RNReconfiguration message message, or FDD-IncreasedSubframeConfig-r10 is independent as message or information cell information element or in the LTE/LTE-A system, increasing above-mentioned newly-increased backhaul subframe among any DCI format enables indication signaling.
Instance nine:
Shown in accompanying drawing 6, among this embodiment, it is the descending backhaul subframe of subframe for increasing newly of #0, #4, #5, #9 that system adopts fixed configurations mode configurating downlink subframe index DLsubframe index, and remains unchanged always.Wherein DL subframe index is that back haul link and the access link of #0, #4, #5 uses radio frequency f2 and f1 respectively; This is called outer (outband) mode of band; Access link subframe structure in back haul link subframe structure that this moment is newly-increased and the LTE/LTE-A system; Or the link subframe structure that direct transfers, or other back haul link subframe structures in 1 radio frames are identical; DL subframe index is that back haul link and the access link of #9 all uses radio frequency f1, and this is called (inband) mode in the band, this moment newly-increased back haul link subframe structure with the LTE/LTE-A system in interior other back haul link subframe structures of 1 radio frames identical.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (21)
1. the collocation method of a newly-increased backhaul subframe is characterized in that,
Network side is through the signaling configuration or the fixed configurations mode disposes newly-increased backhaul subframe.
2. method according to claim 1 is characterized in that,
Said newly-increased backhaul subframe has the backhaul subframe structure of confirming according to said configuration, and receiver side carries out the reception of backhaul subframe according to configuration.
3. method according to claim 1 is characterized in that, said signaling configuration mode is:
Network side adopts high-level signaling or physical layer signaling that said newly-increased backhaul subframe is configured.
4. method according to claim 1 is characterized in that, said fixed configurations mode is:
Configuration to said newly-increased backhaul subframe remains unchanged always, or the configuration of said newly-increased backhaul subframe remains unchanged when enabling always.
5. method according to claim 3 is characterized in that,
In via node configuration messages RNReconfiguration message or via node subframe configuration information cell RN-SubframeConfig information element, increase said high-level signaling, or increase independently said high-level signaling.
6. method according to claim 3 is characterized in that,
In descending control information format DCI format signaling, increase said physical layer signaling.
7. method according to claim 3 is characterized in that, said employing high-level signaling or physical layer signaling are configured said newly-increased backhaul subframe and are specially:
Use each newly-increased backhaul subframe of the corresponding configuration of bitmap bitsmap of X bit; Or use newly-increased backhaul subframe of the only corresponding configuration of binary condition of Y bit, or use that the binary condition of Z bit is only corresponding to be disposed a newly-increased backhaul subframe and gather, wherein X=M; Y=ceil (log2 (M)); Z=ceil (log2 (N)), M are the newly-increased backhaul number of sub frames of permission in the system, and N allows newly-increased backhaul subframe set number in the system; Ceil representes the computing that rounds up, and log2 representes that with 2 be the logarithm operation at the end.
8. method according to claim 4 is characterized in that, the configuration of said newly-increased backhaul subframe is remained unchanged always is meant fixing several newly-increased backhaul subframes of using.
9. method according to claim 4 is characterized in that, the configuration of said newly-increased backhaul subframe remains unchanged when enabling always and is meant:
To said newly-increased backhaul subframe enable signaling when effective, fixing several newly-increased backhaul subframes of using, to said newly-increased backhaul subframe enable signaling when invalid, do not use newly-increased backhaul subframe in the system.
10. method according to claim 9 is characterized in that,
Said enable signaling use 1 bit binary condition represent to said newly-increased backhaul subframe to enable signaling effective or invalid.
11. method according to claim 9 is characterized in that,
In via node configuration messages RNReconfiguration message or via node subframe configuration information cell RN-SubframeConfig information element, increase the said signaling that enables; Or increase the independently said signaling that enables, or in descending control information format DCI format, increase the said signaling that enables.
12. method according to claim 2 is characterized in that,
When said newly-increased backhaul subframe was in-band method, the structure of other backhaul subframes in the structure of said newly-increased backhaul subframe and the system in the same radio frames was identical; When said newly-increased backhaul subframe is out-band method, access link subframe structure in the structure of newly-increased backhaul subframe and the system, or the link subframe structure that direct transfers, or the structure of other backhaul subframes in the same radio frames is identical.
13. method according to claim 1 is characterized in that,
Said network side comprises one or more in the following entity: base station eNB, via node RN, cell cooperative entity MCE, gateway GW, mobility management apparatus MME, Evolved UTRAN EUTRAN, operational administrative and safeguard the OAM manager.
14. method according to claim 2 is characterized in that,
Said receiver side comprises one or more in the following entity: base station eNB, via node RN, user equipment (UE).
15. the configuration-system of a newly-increased backhaul subframe is characterized in that, this system comprises:
Network side is used for through the signaling configuration or the fixed configurations mode disposes newly-increased backhaul subframe;
Receiver side is used for carrying out according to the configuration of network side the reception of backhaul subframe.
16. system according to claim 15 is characterized in that,
Said network side adopts high-level signaling or physical layer signaling that said newly-increased backhaul subframe is configured;
Said network side increases said high-level signaling in via node configuration messages RNReconfiguration message or via node subframe configuration information cell RN-SubframeConfig information element, or increases independently said high-level signaling;
Said network side increases said physical layer signaling in descending control information format DCI format signaling.
17. system according to claim 15; It is characterized in that; The fixed configurations mode that said network side adopted is specially: the configuration to said newly-increased backhaul subframe remains unchanged always, or the configuration of said newly-increased backhaul subframe remains unchanged when enabling always;
The configuration of said newly-increased backhaul subframe remained unchanged always refer to fixing several newly-increased backhaul subframes of using;
The configuration of the said newly-increased backhaul subframe finger that always remains unchanged when enabling: enable signaling when effective to said newly-increased backhaul subframe; Fixing several newly-increased backhaul subframes of using; To said newly-increased backhaul subframe enable signaling when invalid, do not use newly-increased backhaul subframe in the system.
18. system according to claim 17 is characterized in that,
In via node configuration messages RNReconfiguration message or via node subframe configuration information cell RN-SubframeConfig information element, increase the said signaling that enables; Or increase the independently said signaling that enables, or in descending control information format DCI format, increase the said signaling that enables.
19. system according to claim 15 is characterized in that,
When said newly-increased backhaul subframe was in-band method, the structure of other backhaul subframes in the structure of said newly-increased backhaul subframe and the system in the same radio frames was identical; When said newly-increased backhaul subframe is out-band method, access link subframe structure in the structure of said newly-increased backhaul subframe and the system, or the link subframe structure that direct transfers, or the structure of other backhaul subframes in the same radio frames is identical.
20. system according to claim 15 is characterized in that,
Said network side comprises one or more in the following entity: base station eNB, via node RN, cell cooperative entity MCE, gateway GW, mobility management apparatus MME, Evolved UTRAN EUTRAN, operational administrative and safeguard the OAM manager.
21. system according to claim 15 is characterized in that,
Said receiver side comprises one or more in the following entity: base station eNB, via node RN, user equipment (UE).
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| CN 201110122758 CN102781100A (en) | 2011-05-12 | 2011-05-12 | Configuration method and system for newly increased backhaul subframe |
| PCT/CN2012/074395 WO2012152176A1 (en) | 2011-05-12 | 2012-04-19 | Method and system for configuring newly added backhaul subframe |
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| CN 201110122758 CN102781100A (en) | 2011-05-12 | 2011-05-12 | Configuration method and system for newly increased backhaul subframe |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105611572A (en) * | 2016-02-17 | 2016-05-25 | 河南工业大学 | Reconfiguration method and reconfiguration system of relay subframes |
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| CN104871592A (en) | 2013-01-15 | 2015-08-26 | 富士通株式会社 | Method, device, and system for negotiating inter-base station function |
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| KR101527978B1 (en) * | 2008-08-06 | 2015-06-18 | 엘지전자 주식회사 | Method and apparatus of communication using subframe between base station and relay |
| RU2508614C2 (en) * | 2009-08-14 | 2014-02-27 | Нокиа Корпорейшн | Flexible ways to indicate downlink/uplink backhaul subframe configurations in relay systems |
| US9014079B2 (en) * | 2009-10-29 | 2015-04-21 | Telefonaktiebolaget L M Ericsson (Publ) | Intra-subframe time multiplexing |
| CN102348163B (en) * | 2010-08-04 | 2016-06-22 | 电信科学技术研究院 | Multimedia broadcast multi-broadcasting business Single frequency network subframe indicating means, system and equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105611572A (en) * | 2016-02-17 | 2016-05-25 | 河南工业大学 | Reconfiguration method and reconfiguration system of relay subframes |
| CN105611572B (en) * | 2016-02-17 | 2018-11-09 | 河南工业大学 | A kind of method for reconfiguration and system of relay sub-frame |
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