CN102300245B - 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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- CN102300245B CN102300245B CN201010208775.XA CN201010208775A CN102300245B CN 102300245 B CN102300245 B CN 102300245B CN 201010208775 A CN201010208775 A CN 201010208775A CN 102300245 B CN102300245 B CN 102300245B
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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
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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 refer to LTE (Long Term Evolution, Long Term Evolution) System relays (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 Universal Terrestrial wireless access network of evolution) eNB (base station) and EPC (Evolved Packet Core, evolution packet switching center) composition.Wherein eNB is connected with EPC by S1 interface, is connected between eNB by X2 interface.S1 and X2 interface are logic interfacing, and an EPC can manage one or more eNB, and an eNB also can be controlled by multiple EPC, and an eNB manages multiple community.
Relay technology is one of core technology of LTE-A (Long Term Evolution-Advance, senior Long Term Evolution), and Relay network is for realizing the covering of blind spot and improving the throughput at edge, system cell.In LTE-A, introduce Relay, mainly for improving the data transfer rate coverage rate of LTE system, group mobility, casual network dispose agility and the throughput in cell edge area and the covering etc. of new region.
RN (Relay Node, via node) is connected with eNB by Un interface, and as shown in Figure 1, Un interface is wave point.RN is connected by Un interface and UE (User equipment, subscriber equipment).
In prior art, certain operations step in Relay implementation procedure is not necessary, as: RN and the steps such as the data inverse-transmitting operation be connected between eNB in handoff procedure, and these operating procedures can cause LTE system inefficiency, therefore these operating procedures are needed to reduce, but prior art can not judge that aforesaid operations step is the need of reduction, therefore causes the inefficiency of whole LTE system.
Summary of the invention
Main purpose of the present invention is to provide a kind of LTE system Relay optimization method and the network equipment, carries out in handoff procedure at UE, judges which operating procedure needs to reduce, to be optimized the process of Relay.
The technical solution adopted for the present invention to solve the technical problems is:
The invention provides a kind of LTE system Relay optimization method, comprising:
The link information of a RN and eNB and the information of adjacent RN is increased in the table of the adjacent area of a RN;
When UE switches, the information according to the link information in the adjacent area table of a described RN and adjacent RN is reduced the step in described handoff procedure.
Wherein, preferably, increase the link information of a RN and eNB and the information of adjacent RN in the table of the described adjacent area at a RN, comprise further afterwards:
Link information in being shown the adjacent area of described RN sends to described eNB, is kept in the adjacent area table of described eNB.
Wherein, preferably, described link information comprises: whether a RN is connected with core net by eNB.
Wherein, preferably, increase the link information of a RN and eNB and the information of adjacent RN in the table of the described adjacent area at a RN, comprise further afterwards:
Receive the measurement report that UE sends;
The community best according to described measurement report determination signal quality and RN or eNB determining belonging to the community that this signal quality is best, and determine described UE to be switched to the best community of described signal quality.
The present invention also provides a kind of network equipment, comprising:
List setting unit, for increasing the link information of a RN and eNB and the information of adjacent RN in the table of the adjacent area of a RN;
Reduce unit, for: when UE switches, the information according to the link information in the adjacent area table of a described RN and adjacent RN is reduced the step in described handoff procedure.
Wherein, preferably, the described network equipment, also comprises:
Information transmitting unit, sends to described eNB for the link information in being shown the adjacent area of described RN, is kept in the adjacent area table of described eNB.
Wherein, preferably, described link information comprises: whether a RN is connected with core net by eNB.
Wherein, preferably, the described network equipment also comprises:
Report receiving element, for receiving the measurement report that UE sends;
Switch unit, for according to the best community of described measurement report determination signal quality and determine belonging to the community that this signal quality is best RN or eNB, and is switched to the best community of described signal quality by described UE.
Implement technical scheme of the present invention, there is following beneficial effect: method and apparatus provided by the invention, carry out in handoff procedure, by the judgement of the connection to UE and RN, RN and eNB at UE, realize the optimization of the handoff procedure of RN network, improve the switching efficiency of LTE system.
Accompanying drawing explanation
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 present invention;
The method flow diagram that Fig. 3 provides for the embodiment of the present invention;
The network architecture diagram that the UE that Fig. 4 provides for the embodiment of the present invention switches between RN;
The UE that Fig. 5 provides for the embodiment of the present invention the RN be connected with core net by eNB be directly connected the network architecture diagram switched between the RN of core net;
Switch between the eNB that the UE that Fig. 6 provides for the embodiment of the present invention is connected with this RN at RN and show network architecture diagram;
The network equipment infrastructure schematic diagram that Fig. 7 provides for one embodiment of the invention;
The network equipment infrastructure schematic diagram that Fig. 8 provides for another embodiment of the present invention;
The network equipment infrastructure schematic diagram that Fig. 9 provides for further embodiment of this invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The embodiment of the present invention provides a kind of LTE system Relay optimization method, and as shown in Figure 2, the method comprising the steps of:
S101, the adjacent area of a RN table in increase the link information of a RN and eNB and the information of adjacent RN;
In specific embodiment, described link information comprises: whether whether a RN be connected with core net by eNB by other RN and eNB connection and/or a RN.In the present embodiment, mainly whether by there being the ID of other RN and eNB (identify label) information to determine in the table of the adjacent area of a RN, whether whether a RN be connected with core net by eNB by other RN and eNB connection and/or a RN.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 |
| Connect the information of eNB | Optional | |
| Whether the RN of adjacent area is connected with eNB | Necessary | 0-1 |
| Adjacent area RN connects the information of eNB | Optional |
The information relevant to RN increased in the table of the adjacent area of RN is listed in table 1.The scope whether be connected with eNB represents with 0-1: 0 represents to be connected with eNB, and this represents that RN is directly connected with core net, and the eNB information of connection is invalid; 1 represents that RN and eNB is connected, and the eNB information of connection is effective.
As: if the adjacent area table of a RN has the ID of eNB, then this RN connects core net by this eNB, if do not have the ID of eNB, a RN is direct core network access.
If in the adjacent area table of a RN, have the ID of other RN, then a RN and this other RN is syntople, according to said method, namely whether there is the ID of eNB in the table of the adjacent area of this adjacent RN to judge that this adjacent RN connects core net by eNB, or direct core network access.
S102, when UE switches, the information according to the link information in the table of the adjacent area of a described RN and adjacent RN is reduced the corresponding steps in described handoff procedure, as: reduce data inverse-transmitting operating procedure.
In further embodiment, in step S101, in the table of the adjacent area of a RN, increase the link information of a RN and eNB and the information of adjacent RN, comprise further afterwards:
S103, by the adjacent area of described RN show in link information send to described eNB, be kept at described eNB adjacent area table in; So that when UE switches, according to the RN information that the link information in the adjacent area table of described eNB is connected with this eNB, the corresponding steps in described handoff procedure is reduced.Like this, carried out the reduction of some the unnecessary steps in UE handoff procedure by the link information of this eNB in the table of the adjacent area of eNB, as: the steps such as RN in handoff procedure and the data inverse-transmitting operation be connected between eNB are reduced.
In addition, in other examples, this step S103, by the adjacent area of described RN show in link information send to described eNB, be kept at described eNB adjacent area table in; So that when UE switches, according to the RN information that the link information in the adjacent area table of described eNB is connected with described eNB, the corresponding steps in described handoff procedure is reduced.Can step S102, switch as UE time, according to the link information in the table of the adjacent area of a described RN to the step in described handoff procedure reduce carry out while carry out.Also can realize object 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 targets improvement covering and user throughput improves spectrum efficiency.RN is fixing, and the cell range of RN is little and dispose intensive, and UE density is high, can use a layer 3Relay.
May produce in this scene: UE switches between RN, or UE switches between RN and eNB, or, switch between the eNB that UE connects at RN.
Embodiment one: UE switches between RN, as shown in Figure 4: RN1 and RN2, RN3 connect from different eNB, that is: RN1 and eNB1 connects, RN2, RN3 are connected with same eNB2, eNB1 with eNB2 is connected RN1 belonging to core net (MME/S-GW) community A respectively, RN2 belonging to the B of community, RN3 belonging to the C of community.
According to method of the present invention, specific implementation process is as follows:
UE is current resident on the B of community, and UE sends measurement report to RN2.
RN2 finds according to this measurement report, and the signal quality of community A is better than community B, and the signal quality of community C is also better than community B, and RN2 judgement needs switch, and community A and community C is the alternative cell of switching target small area.
Switch if final and determine to switch between little A and community B, RN2 checks eNB link information in the table of adjacent area and the information of adjacent RN1, find that RN2 and RN1 is connected from different eNB respectively, therefore the data inverse-transmitting operating procedure in handoff procedure can only be carried out between eNB, also can carry out between RN, or carry out between eNB and between RN simultaneously.
If switch final and determine to switch between little B and community C, RN1 checks the information that adjacent area is shown, and that find RN2 and RN3 connection is same eNB2, and the data inverse-transmitting operating procedure therefore in handoff procedure is only carried out between RN.
The RN1 that embodiment two: UE is connecting eNB switches with between the RN2 being directly connected core net, as shown in Figure 5: RN1 and eNB connects, and RN2 is directly connected with core net, RN1 belonging to the A of community, RN2 belonging to the B of community.
According to method of the present invention, specific implementation process is as follows:
UE is current resident on the A of community, and UE sends measurement report to RN1.
RN1 finds according to measurement report, and the signal quality of community B is better than community A, and RN1 adjudicates needs and switches.
RN1 checks the information that adjacent area is shown, and find that RN1 and eNB is connected, RN is directly connected with core net, and the data inverse-transmitting operating procedure therefore in handoff procedure is only carried out between RN, or reduces data inverse-transmitting operating procedure.
Switch between the eNB that embodiment three: UE connects at RN and RN, as shown in Figure 6: RN1 and eNB1 connects, eNB1 core network access, RN1 belonging to the A of community, eNB1 belonging to the B of community.
According to method of the present invention, specific implementation process is as follows:
UE is current resident on the A of community, and UE sends measurement report to RN1.
RN1 finds according to measurement report, and the signal quality of community B is better than community A, and RN1 adjudicates needs and switches.
RN1 checks the information that adjacent area is shown, and find that the eNB1 that eNB1 and the RN1 belonging to Target cell connects is identical, the data inverse-transmitting operating procedure therefore in handoff procedure can be reduced.
In sum, above-described embodiment switches to example with UE in RN network, the present invention is described by whether being connected with eNB in the table of the adjacent area of RN node, and the relevant information of the eNB connected, judge whether when switching associative operation to need to reduce associative operation, and reduce unwanted step, realize the optimization of handoff procedure, improve switching efficiency.
The embodiment of the present invention also provides a kind of network equipment, and as shown in Figure 7, this network equipment comprises:
List setting unit 710, for increasing the link information of a RN and eNB and the information of adjacent RN in the table of the adjacent area of a RN;
Reduce unit 720, for: when UE switches, the information according to the link information in the adjacent area table of a described RN and adjacent RN is reduced the corresponding steps in described handoff procedure.
In the present embodiment, described link information comprises: a RN is connected with core net by eNB, or is directly connected with core net; The information of described adjacent RN is: the ID of this adjacent RN, and judges whether this adjacent RN is connected with core net by eNB by the adjacent area table of this adjacent RN, or is directly connected with core net.
In further embodiment, as shown in Figure 8, the described network equipment, also comprises:
Information transmitting unit 730, described eNB is sent to for the link information in being shown the adjacent area of described RN, be kept in the adjacent area table of described eNB, when UE switches, according to the link information in the adjacent area table of described eNB, the corresponding steps in described handoff procedure reduced.
It is identical that the information corresponding steps of carrying out in handoff procedure should shown by the adjacent area of the eNB information of cutting out the link information in showing with the adjacent area above by a RN and adjacent RN carries out cutting method to the corresponding steps in described handoff procedure.
In further embodiment, as shown in Figure 9, the described network equipment, on the basis of Fig. 7 and Fig. 8, also comprises:
Report receiving element 740, for receiving the measurement report that UE sends;
Switch unit 750, for according to the best community of described measurement report determination signal quality and determine belonging to the community that this signal quality is best RN or eNB, and is switched to the best community of described signal quality by described UE.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a LTE system relay optimization method, is characterized in that, comprising:
The link information of a RN and base station eNB and the information of adjacent RN is increased in the table of the adjacent area of the first via node RN;
When user equipment (UE) carries out the switching relating to RN, the information according to the link information in the adjacent area table of a described RN and adjacent RN is reduced the data inverse-transmitting operating procedure in described handoff procedure.
2. method as claimed in claim 1, is characterized in that, increases the link information of a RN and eNB and the information of adjacent RN, comprise further afterwards in the table of the described adjacent area at a RN:
Link information in being shown the adjacent area of described RN sends to described eNB, is kept in the adjacent area table of described eNB.
3. method as claimed in 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, increases the link information of a RN and eNB and the information of adjacent RN, comprise further afterwards in the table of the described adjacent area at a RN:
Receive the measurement report that UE sends;
The community best according to described measurement report determination signal quality and RN or eNB determining belonging to the community that this signal quality is best, and determine described UE to be switched to the best community of described signal quality.
5. a network equipment, is characterized in that, comprising:
List setting unit, for increasing the link information of a RN and eNB and the information of adjacent RN in the table of the adjacent area of a RN;
Reduce unit, for when UE carries out the switching relating to RN, the information according to the link information in the adjacent area table of a described RN and adjacent RN is reduced the data inverse-transmitting operating procedure in described handoff procedure.
6. the network equipment as claimed in claim 5, is characterized in that, also comprise:
Information transmitting unit, sends to described eNB for the link information in being shown the adjacent area of described RN, is kept in the adjacent area table of described eNB.
7. the network equipment as claimed in claim 5, it is characterized in that, described link information comprises: whether a RN is connected with core net by eNB.
8. the network equipment as described in claim 5 or 6, is characterized in that, also comprises:
Report receiving element, for receiving the measurement report that UE sends;
Switch unit, for according to the best community of described measurement report determination signal quality and determine belonging to the community that this signal quality is best RN or eNB, and is switched to the best community of described signal quality by described UE.
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 |
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| Application Number | Priority Date | Filing Date | Title |
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| 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 CN102300245A (en) | 2011-12-28 |
| CN102300245B true CN102300245B (en) | 2015-06-03 |
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| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101483893A (en) * | 2008-12-23 | 2009-07-15 | 同济大学 | Fast access point switching method based on dynamic access path selection mechanism |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101014183B (en) * | 2005-10-17 | 2011-10-12 | 三星电子株式会社 | Apparatus and method for switching in a wireless access communication system |
| WO2010026287A1 (en) * | 2008-09-08 | 2010-03-11 | Nokia Corporation | Adaptive transmission modes for transparent relay |
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- 2010-09-29 WO PCT/CN2010/077473 patent/WO2011160352A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| WO2011160352A1 (en) | 2011-12-29 |
| CN102300245A (en) | 2011-12-28 |
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