CN102300245A - Relay optimizing method for LTE (Long Term Evolution) system and network equipment - Google Patents
Relay optimizing method for LTE (Long Term Evolution) system and network equipment Download PDFInfo
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- CN102300245A CN102300245A CN201010208775XA CN201010208775A CN102300245A CN 102300245 A CN102300245 A CN 102300245A CN 201010208775X A CN201010208775X A CN 201010208775XA CN 201010208775 A CN201010208775 A CN 201010208775A CN 102300245 A CN102300245 A CN 102300245A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
- H04W84/047—Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations
Abstract
The invention provides a relay optimizing method for an LTE (Long Term Evolution) system and network equipment. The method comprises the following steps of: adding connection information of a first RN (Relay Node) and an eNB (evolved Node B) and information of a neighbor RN into a neighbor cell table of the first RN; and when UE (User Equipment) is used for switching, reducing the steps of the switching process according to the connection information and the information of the neighbor RN in the neighbor cell table of the first RN. In the method and the equipment provided by the invention, the connection situations between the UE and the RN as well as between the RN and the eNB are judged in the switching process of the UE, so that optimization of the network switching process of the RN is realized and the switching efficiency of the LTE system is increased.
Description
Technical field
The present invention relates to communication technical field, specifically be meant LTE (Long Term Evolution, Long Term Evolution) system's relaying (Relay) optimization method and the network equipment.
Background technology
3GPP LTE (Long Term Evolution, the Long Term Evolution of 3G (Third Generation) Moblie) network is the structure of flattening, by E-UTRAN (Evolved UTRAN, the general continental rise wireless access network of evolution) eNB (base station) and EPC (Evolved Packet Core, evolution packet switching center) form.Wherein eNB links to each other with EPC by the S1 interface, connects by X2 interface between the eNB.S1 and X2 interface are logic interfacing, and an EPC can manage one or more eNB, and an eNB also can be controlled by a plurality of EPC, and an eNB manages a plurality of sub-districts.
The Relay technology is one of core technology of LTE-A (Long Term Evolution-Advance, senior Long Term Evolution), the throughput that the Relay network is used to realize the covering of blind spot and improves the system cell edge.In LTE-A, introduce Relay, mainly dispose agility and the throughput in cell edge area and the covering of new region etc. for the data transfer rate coverage rate, group's mobility, the casual network that improve the LTE system.
RN (Relay Node, via node) links to each other with eNB by the Un interface, and as shown in Figure 1, the Un interface is a wave point.RN links to each other by Un interface and UE (User equipment, subscriber equipment).
In the prior art, certain operations step in the Relay implementation procedure is not necessary, as: RN and the steps such as data inverse-transmitting operation that are connected between the eNB in the handoff procedure, and these operating procedures can cause the LTE system effectiveness low, therefore these operating procedures need be reduced, yet prior art can not judge whether the aforesaid operations step needs to reduce, and therefore causes the inefficiency of whole LTE system.
Summary of the invention
Main purpose of the present invention provides a kind of LTE Relay of the system optimization method and the network equipment, carries out in the handoff procedure at UE, judges which operating procedure need reduce, and is optimized with the process to Relay.
The technical solution adopted for the present invention to solve the technical problems is:
The invention provides a kind of LTE Relay of system optimization method, comprising:
In the table of the adjacent area of a RN, increase the link information of a RN and eNB and in abutting connection with the information of RN;
When UE switches, the step in the described handoff procedure is reduced according to the link information in the adjacent area table of a described RN with in abutting connection with the information of RN.
Wherein, preferred, the described link information that increases a RN and eNB in the table of the adjacent area of a RN and in abutting connection with the information of RN further comprises afterwards:
Link information in the adjacent area table of described RN is sent to described eNB, be kept in the adjacent area table of described eNB.
Wherein, preferred, described link information comprises: whether a RN is connected with core net by eNB.
Wherein, preferred, the described link information that increases a RN and eNB in the table of the adjacent area of a RN and in abutting connection with the information of RN further comprises afterwards:
Receive the measurement report that UE sends;
Determine sub-district that signal quality is best and determine RN or eNB under the best sub-district of this signal quality according to described measurement report, and decision switches to the best sub-district of described signal quality with described UE.
The present invention also provides a kind of network equipment, comprising:
Tabulation is provided with the unit, and being used for increases the link information of a RN and eNB and in abutting connection with the information of RN at the adjacent area of RN table;
Reduce the unit, be used for: when UE switches, the step in the described handoff procedure is reduced according to the link information in the adjacent area table of a described RN with in abutting connection with the information of RN.
Wherein, preferred, the described network equipment also comprises:
Information transmitting unit is used for the link information that the adjacent area of described RN is shown is sent to described eNB, is kept in the adjacent area table of described eNB.
Wherein, preferred, described link information comprises: whether a RN is connected with core net by eNB.
Wherein, preferred, the described network equipment also comprises:
The report receiving element is used to receive the measurement report that UE sends;
Switch unit is used for determining sub-district that signal quality is best and determining RN or eNB under the best sub-district of this signal quality according to described measurement report, and described UE is switched to the best sub-district of described signal quality.
Implement technical scheme of the present invention, have following beneficial effect: method and apparatus provided by the invention, carry out in the handoff procedure at UE, by to UE and RN, the RN judgement with the situation that is connected of eNB, realize the optimization of the handoff procedure of RN network, improve the switching efficiency of LTE system.
Description of drawings
The network architecture diagram that Fig. 1 provides for prior art;
The RN network arrangement schematic diagram that Fig. 2 provides for the embodiment of the invention;
The method flow diagram that Fig. 3 provides for the embodiment of the invention;
The network architecture diagram that the UE that Fig. 4 provides for the embodiment of the invention switches between RN;
The network architecture diagram that the UE that Fig. 5 provides for the embodiment of the invention switches between the RN that is connected with core net by eNB and the RN that directly is connected core net;
The UE that Fig. 6 provides for the embodiment of the invention switches between RN and eNB that this RN is connected and shows network architecture diagram;
The network equipment structural representation that Fig. 7 provides for one embodiment of the invention;
The network equipment structural representation that Fig. 8 provides for another embodiment of the present invention;
The network equipment structural representation that Fig. 9 provides for further embodiment of this invention.
The realization of the object of the invention, functional characteristics and advantage will be in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The embodiment of the invention provides a kind of LTE Relay of system optimization method, and as shown in Figure 2, the method comprising the steps of:
S101, in the table of the adjacent area of a RN, increase the link information of a RN and eNB and in abutting connection with the information of RN;
In the specific embodiment, described link information comprises: whether a RN is connected with eNB by other RN and/or whether a RN is connected with core net by eNB.In the present embodiment, mainly be by in the table of the adjacent area of a RN, whether having other RN and ID (identify label) information of eNB to determine that whether a RN is connected with eNB by other RN and/or whether a RN is connected with core net by eNB.Concrete field information is as shown in table 1 below:
Table 1
| Field name | There is situation | Scope |
| Whether be connected with eNB | Necessary | 0-1 |
| The information that connects eNB | Optional | |
| Whether the RN of adjacent area is connected with eNB | Necessary | 0-1 |
| Adjacent area RN connects the information of eNB | Optional |
Listed the information relevant that in the table of the adjacent area of RN, is increased in the table 1 with RN.The scope that whether is connected with eNB is represented with 0-1: 0 expression is not connected with eNB, and this expression RN directly is connected with core net, and the eNB information of connection is invalid; 1 expression RN links to each other with eNB, and the eNB information of connection is effective.
As: if the adjacent area of RN table has the ID of eNB, then this RN connects core net by this eNB, if there is not the ID of eNB, a RN directly inserts core net.
If in the table of the adjacent area of a RN, ID with other RN, then a RN and this other RN are syntople, according to said method, the ID that promptly whether has eNB in this adjacent area in abutting connection with RN is shown judges that the RN of this adjacency connects core net by eNB, still directly inserts core net.
S102, when UE switches, according to the link information in the table of the adjacent area of a described RN with in abutting connection with the information of RN the corresponding steps in the described handoff procedure is reduced, as: reduce the data inverse-transmitting operating procedure.
Further among the embodiment, increase the link information of a RN and eNB at step S101, in the table of the adjacent area of a RN and, further comprise afterwards in abutting connection with the information of RN:
S103, the link information in the table of the adjacent area of described RN is sent to described eNB, be kept in the adjacent area table of described eNB; So that when UE switches, the corresponding steps in the described handoff procedure is reduced according to the RN information that the link information in the adjacent area table of described eNB is connected with this eNB.Like this, carry out the reduction of some the unnecessary steps in the UE handoff procedure by the link information of this eNB in the adjacent area table of eNB, as: RN in the handoff procedure is reduced with the steps such as data inverse-transmitting operation that are connected between the eNB.
In addition, in other embodiment, this step S103, the link information in the table of the adjacent area of described RN is sent to described eNB, be kept in the adjacent area table of described eNB; So that when UE switches, the corresponding steps in the described handoff procedure is reduced according to the RN information that the link information in the adjacent area table of described eNB is connected with described eNB.Can be at step S102, when UE switches, according to the link information in the adjacent area table of a described RN step in the described handoff procedure is reduced when carrying out and to carry out.Also can realize purpose of the present invention, reach technique effect of the present invention.
Below in conjunction with concrete Application Example, for a more detailed description to the present invention.
As shown in Figure 3, the scene of the hot zones in city, the thing that RN disposes target enhancing covering and user throughput is to improve spectrum efficiency.RN fixes, and the cell range of RN is little and dispose intensively, and UE density height can use a layer 3Relay.
May produce in this scene: UE switches between RN, and perhaps, UE switches between RN and eNB, and perhaps, UE switches between the eNB that RN connects.
Embodiment one: UE switches between RN, as shown in Figure 4: RN1 and RN2, RN3 are connected with different eNB, that is: RN1 is connected with eNB1, RN2, RN3 are connected with same eNB2, eNB1 is connected the affiliated RN1 of core net (MME/S-GW) sub-district A respectively with eNB2, RN3 under the RN2 under the B of sub-district, sub-district C.
The method according to this invention, specific implementation process is as follows:
UE is current resident on the B of sub-district, and UE sends measurement report to RN2.
RN2 finds that according to this measurement report the signal quality of sub-district A is better than sub-district B, and the signal quality of sub-district C also is better than sub-district B, and the RN2 judgement need switch, and sub-district A and sub-district C are the alternative cell of switching target small area.
If final the switching determines to switch between little A and sub-district B, RN2 check in the adjacent area table the eNB link information and in abutting connection with the information of RN1, find that RN2 and RN1 link to each other with different eNB respectively, therefore the data inverse-transmitting operating procedure in handoff procedure can only be carried out between eNB, also can between RN, carry out, perhaps carry out simultaneously between the eNB and between the RN.
Switch between little B and sub-district C if finally switch decision, RN1 checks the information of adjacent area table, and that discovery RN2 is connected with RN3 is same eNB2, and therefore the data inverse-transmitting operating procedure in handoff procedure is only carried out between RN.
Embodiment two: UE switches between the RN1 that connects eNB and the RN2 that directly is connected core net, and as shown in Figure 5: RN1 is connected with eNB, and RN2 directly is connected with core net, the affiliated RN1 of sub-district A, the affiliated RN2 of sub-district B.
The method according to this invention, specific implementation process is as follows:
UE is current resident on the A of sub-district, and UE sends measurement report to RN1.
RN1 finds that according to measurement report the signal quality of sub-district B is better than sub-district A, and the RN1 judgement need be switched.
RN1 checks the information of adjacent area table, finds that RN1 links to each other with eNB, and RN directly links to each other with core net, and therefore the data inverse-transmitting operating procedure in handoff procedure is only carried out between RN, perhaps reduces the data inverse-transmitting operating procedure.
Embodiment three: UE switches between RN and eNB that RN is connected, and as shown in Figure 6: RN1 is connected with eNB1, and eNB1 inserts core net, eNB1 under the RN1 under the A of sub-district, sub-district B.
The method according to this invention, specific implementation process is as follows:
UE is current resident on the A of sub-district, and UE sends measurement report to RN1.
RN1 finds that according to measurement report the signal quality of sub-district B is better than sub-district A, and the RN1 judgement need be switched.
RN1 checks the information of adjacent area table, finds that the eNB1 under the Target cell is identical with the eNB1 that RN1 connects, and therefore the data inverse-transmitting operating procedure in handoff procedure can be reduced.
In sum, the foregoing description switches to example with UE in the RN network, the present invention is described by in the table of the adjacent area of RN node, whether linking to each other with eNB, and the relevant information of the eNB that connects, when switching associative operation, judge whether to need to reduce associative operation, and reduce unwanted step, and realize the optimization of handoff procedure, improve switching efficiency.
The embodiment of the invention also provides a kind of network equipment, and as shown in Figure 7, this network equipment comprises:
Tabulation is provided with unit 710, and being used for increases the link information of a RN and eNB and in abutting connection with the information of RN at the adjacent area of RN table;
Reduce unit 720, be used for: when UE switches, the corresponding steps in the described handoff procedure is reduced according to the link information in the adjacent area table of a described RN with in abutting connection with the information of RN.
In the present embodiment, described link information comprises: a RN is connected with core net by eNB, still directly is connected with core net; Described information in abutting connection with RN is: this is in abutting connection with the ID of RN, and judges by this adjacent area table in abutting connection with RN whether this is connected with core net by eNB in abutting connection with RN, still is directly to be connected with core net.
Further among the embodiment, as shown in Figure 8, the described network equipment also comprises:
Information of adjacent area table that should be by eNB is carried out corresponding steps in the handoff procedure and is cut out with above-mentioned by the link information in the adjacent area table of a RN with in abutting connection with the information of RN the corresponding steps in the described handoff procedure to be carried out cutting method identical.
Further among the embodiment, as shown in Figure 9, the described network equipment also comprises on the basis of Fig. 7 and Fig. 8:
Report receiving element 740 is used to receive the measurement report that UE sends;
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a LTE system relaying optimization method is characterized in that, comprising:
In the table of the adjacent area of the first via node RN, increase the link information of a RN and base station eNB and in abutting connection with the information of RN;
When user equipment (UE) switches, the step in the described handoff procedure is reduced according to the link information in the adjacent area table of a described RN with in abutting connection with the information of RN.
2. method according to claim 1 is characterized in that, the described link information that increases a RN and eNB in the table of the adjacent area of a RN and in abutting connection with the information of RN further comprises afterwards:
Link information in the adjacent area table of described RN is sent to described eNB, be kept in the adjacent area table of described eNB.
3. method according to claim 1, it is characterized in that described link information comprises: whether a RN is connected with core net by eNB.
4. method as claimed in claim 1 or 2 is characterized in that, the described link information that increases a RN and eNB in the table of the adjacent area of a RN and in abutting connection with the information of RN further comprises afterwards:
Receive the measurement report that UE sends;
Determine sub-district that signal quality is best and determine RN or eNB under the best sub-district of this signal quality according to described measurement report, and decision switches to the best sub-district of described signal quality with described UE.
5. a network equipment is characterized in that, comprising:
Tabulation is provided with the unit, and being used for increases the link information of a RN and eNB and in abutting connection with the information of RN at the adjacent area of RN table;
Reduce the unit, be used for when UE switches, the step in the described handoff procedure is reduced according to the link information in the adjacent area table of a described RN with in abutting connection with the information of RN.
6. as the network equipment as described in the claim 5, it is characterized in that, also comprise:
Information transmitting unit is used for the link information that the adjacent area of described RN is shown is sent to described eNB, is kept in the adjacent area table of described eNB.
7. as the network equipment as described in the claim 5, it is characterized in that described link information comprises: whether a RN is connected with core net by eNB.
8. as the network equipment as described in claim 5 or 6, it is characterized in that, also comprise:
The report receiving element is used to receive the measurement report that UE sends;
Switch unit is used for determining sub-district that signal quality is best and determining RN or eNB under the best sub-district of this signal quality according to described measurement report, and described UE is switched to the best sub-district of described signal quality.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010208775.XA CN102300245B (en) | 2010-06-23 | 2010-06-23 | Relay optimizing method for LTE (Long Term Evolution) system and network equipment |
| PCT/CN2010/077473 WO2011160352A1 (en) | 2010-06-23 | 2010-09-29 | Method and network device for relay optimization in lte system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010208775.XA CN102300245B (en) | 2010-06-23 | 2010-06-23 | Relay optimizing method for LTE (Long Term Evolution) system and network equipment |
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| CN102300245A true CN102300245A (en) | 2011-12-28 |
| CN102300245B CN102300245B (en) | 2015-06-03 |
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| CN201010208775.XA Active CN102300245B (en) | 2010-06-23 | 2010-06-23 | Relay optimizing method for LTE (Long Term Evolution) system and network equipment |
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| WO (1) | WO2011160352A1 (en) |
Cited By (1)
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| CN103428789A (en) * | 2012-05-21 | 2013-12-04 | 普天信息技术研究院有限公司 | Switching method of repeater |
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| KR100883790B1 (en) * | 2005-10-17 | 2009-02-19 | 삼성전자주식회사 | Apparatus and method for processing handover in a multi-hop relay broadband wireless access communication system |
| WO2010026287A1 (en) * | 2008-09-08 | 2010-03-11 | Nokia Corporation | Adaptive transmission modes for transparent relay |
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2010
- 2010-06-23 CN CN201010208775.XA patent/CN102300245B/en active Active
- 2010-09-29 WO PCT/CN2010/077473 patent/WO2011160352A1/en active Application Filing
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| EP1947889A2 (en) * | 2007-01-16 | 2008-07-23 | Samsung Electronics Co., Ltd. | Apparatus and method for performing cell selection to home cell or private network in a mobile communication system |
| CN101742612A (en) * | 2008-11-19 | 2010-06-16 | 华为技术有限公司 | Method, device and evolution base station for saving adjacent cell relation information |
| CN101483893A (en) * | 2008-12-23 | 2009-07-15 | 同济大学 | Fast access point switching method based on dynamic access path selection mechanism |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103428789A (en) * | 2012-05-21 | 2013-12-04 | 普天信息技术研究院有限公司 | Switching method of repeater |
| CN103428789B (en) * | 2012-05-21 | 2016-08-10 | 普天信息技术研究院有限公司 | A kind of changing method of trunking |
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| Publication number | Publication date |
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| CN102300245B (en) | 2015-06-03 |
| WO2011160352A1 (en) | 2011-12-29 |
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