CN102892150A - Interface message processing method and system for wireless relay system - Google Patents
Interface message processing method and system for wireless relay system Download PDFInfo
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- CN102892150A CN102892150A CN2011102072829A CN201110207282A CN102892150A CN 102892150 A CN102892150 A CN 102892150A CN 2011102072829 A CN2011102072829 A CN 2011102072829A CN 201110207282 A CN201110207282 A CN 201110207282A CN 102892150 A CN102892150 A CN 102892150A
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Abstract
The invention provides an interface message processing method and system for a wireless relay system. The interface message processing method for the wireless relay system comprises the following steps that: a sending network element acquires a wireless link failure report, generates an interface message, and sends the interface message to an intermediate network element; and the intermediate network element receives the interface message and forwards the interface message to a receiving network element according to routing indication in the interface message. According to the interface message processing method for the wireless relay system provided by the invention, the interface message in the wireless relay system can be routed to a correct target network element.
Description
Technical field
The present invention relates to wireless relaying technique, refer to especially a kind of processing method and system of wireless relay system interface message.
Background technology
As shown in Figure 1, cellular radio Communication system mainly is comprised of terminal, Access Network and core net.The network that is comprised of base station or base station and base station controller is called wireless access network (RAN, Radio AccessNetwork), is responsible for the Access Layer affairs, such as the management of Radio Resource.Can there be physics or connection in logic according to actual conditions between the base station, such as being connected of the base station 1 among Fig. 1 and base station 2, base station 3.Each base station can connect with one or more than one core net (CN, Core Network).Core net is responsible for the Non-Access Stratum affairs, such as position renewal etc., and is the anchor point of user's face.Terminal (UE, User Equipment) refers to the various device that can communicate by letter with cellular radio communication network, such as mobile phone or notebook computer etc.
In cellular radio communication system, the wireless coverage of fixed base stations network causes in the covering of wireless network inevasible existence covering leak such as various building structure to reasons such as stopping of wireless signal owing to various reasons are restricted.In addition on the one hand, the border district in the residential quarter, owing to weakening of wireless signal strength, and the interference of neighbor cell, cause UE when cell edge, communication quality is relatively poor, the error rate of wireless transmission is raised.For coverage rate, group mobility, casual network deployment, the throughput in cell edge area and the covering of new region that improves data transfer rate, existing a solution is to introduce a kind of wireless network node at cellular radio Communication system, be called via node or relay station (RN, Relay Node/RS, Relay Station).
Via node has between other network nodes the function by the Radio Link relay data, its operation principle as shown in Figure 2, wherein, the UE that the base station is directly served is grand (Macro) UE, the UE of relay node services is relaying (Relay) UE; Link among the figure has:
Link (direct link) direct transfers: the Radio Link between base station and the grand UE comprises up-downgoing (DL/ULdownlink/uplink) link that direct transfers;
Access link (access link): the Radio Link between via node and the relaying UE comprises the up-downgoing access link;
Back haul link (backhaul link): the Radio Link between base station and the via node comprises the up-downgoing back haul link.
Via node can pass through the several different methods relay data, such as the wireless signal that directly amplifies the base station transmission that receives, carry out corresponding processing after perhaps receiving the data that the base station sends, with the package forward that correctly receives to terminal, perhaps base station and via node cooperation send data to terminal, the data that opposite via node also can relaying sends from terminal to the base station.
In numerous trunk types, there is a kind of relaying to be called as type one relaying (Type Irelay), its characteristics are as follows:
For the residential quarter under type one relaying and the fixed base stations, UE can't distinguish, and namely type one relaying originally it seems to be exactly a residential quarter in UE, and is as broad as long with the residential quarter under the base station, and this moment, this type of residential quarter can be called the relaying residential quarter.There is the physical cell identity (PCI of oneself the relaying residential quarter, physical cell identity), as common residential quarter, send broadcasting, when UE resides in the relaying residential quarter, use to UE relaying residential quarter separately allocation schedule Radio Resource, can be independent of the wireless resource scheduling of the base station that participates in relaying, the Donor base station that is otherwise known as, the base station of this relaying, the i.e. base station that connects by back haul link of via node.Interface and protocol stack between relaying residential quarter and the relaying UE are with identical between ordinary base station residential quarter and the UE.
The eNB that is responsible for access style one relaying is called as admittance base station (DeNB, Donor eNB).
Air interface between RN and the relaying UE is called as the Uu interface; On the Uu interface, all radio access layer chain of command and user plane protocols end in RN;
Air interface between RN and the DeNB is called as the Un interface; On the Un interface, comprise at least wireless medium access (MAC) layer protocol, Radio Link control (RLC) layer protocol, a compression and decompression (PDCP) layer protocol.
After introducing RN, a kind of typical wireless network architecture as shown in Figure 3, wherein, RN is linked into DeNB, has X2 interface between DeNB and the RN and between DeNB and the eNB.After UE is linked into RN, other network elements be can switch to, for example can DeNB, eNB be switched to by S1 interface or X2 interface.
Fig. 4 is for supporting the chain of command X2 interface protocol stack of RN.Only have an X2 interface between RN and the DeNB, DeNB and other eNB that has X2 interface to concern all only have an X2 interface link.DeNB processes and transmits RN and all UE relevant (UE-dedicated) process between other eNB.Relevant (non-UE-dedicated) process of non-UE is only being processed between RN and the DeNB or between DeNB and other eNB respectively.
Before introducing RN, the evolution wireless access system cellular global identity of eNB residential quarter (ECGI, E-UTRAN Cell Global ID) numbering comprises public land mobile network (PLMN) and evolution wireless access system cell ID.Wherein, evolution wireless access system cell ID is the numbering of 28 bits, and this numbering is divided into again two parts, is divided into front 20 bit number and rear 8 bit number; Here, front 20 bit number are called the base station numbering, and rear 8 bit number are called cell number.After introducing RN, the base station numbering in the ECGI of the RN residential quarter numbering must and the ECGI numbering of DeNB residential quarter in the base station number consistent.
Therefore, after introducing RN, although there is not direct X2 interface between RN and the eNB, X2 interface message still can be forwarded to the other side by DeNB; This be because: the base station numbering of the ECGI of RN residential quarter and DeNB residential quarter numbering is consistent, inconsistent only is cell number, its main purpose is when sending a message to RN for adjacent area eNB, the RN residential quarter can be regarded as a residential quarter as DeNB, thereby message is issued DeNB, and DeNB is transmitted to RN after receiving message, as shown in Figure 3, eNB issues DeNB with message, and DeNB is transmitted to RN after receiving message.
MANET (SON) is a kind of technology of automatically carrying out network configuration and optimization.The characteristics of this technology are the self-configuring self-optimizings, this technology is used in LTE so that LTE base station (eNB) can be according to the automatic configuration network parameter of certain measurement, and carry out Automatic Optimal according to network change, thus keep network performance optimum, save simultaneously a large amount of manpower and materials.
For the self-optimization of switching parameter of LTE system, need to according to the operation conditions of network, according to switching relevant measurement, optimize cell reselection and switch relevant parameter according to certain algorithm, to improve the performance of network.The process that terminal is switched in network: network side is made handover decisions according to this residential quarter of terminal to report and the signal quality of adjacent area based on certain handoff algorithms, then carries out concrete switching flow according to the handover decisions notification terminal.Inappropriate handoff parameter setting can cause pingpang handoff, handoff failure or Radio Link Failure (RLF, radio link failure), and these all are the switchings of not expecting, user's experience is caused negative effect and can waste Internet resources.Therefore, self-optimization of switching parameter is to carry out the basis that handoff parameter is adjusted to the accurate judgement of handoff failure or the handoff scenario do not expected.
Mobile robustness optimization (MRO, Mobility Robustness Optimization) is an important component part of SON function.This function can be used for judging three kinds of main causes of UE and wireless network side connection failure, is respectively to switch too early failure (Too early HO) of failure in evening (Too late HO), switching, wrong cell failure (Wrong cell HO).
Switch the failure in evening, refer to that connection failure occurs in the cell-of-origin of switching among switching does not begin or switches, but the Radio Resource of terminal control (RRC, Radio Resource Control) connection re-establishment flow process but occurred in Target cell.
Switch too early failure, refer to behind handover success, occur very soon in connection failure or the handoff procedure connection failure to have occured, but the RRC connection re-establishment flow process of terminal but occurs in the cell-of-origin.
Wrong cell failure refers to occur very soon in connection failure or the handoff procedure connection failure to have occured behind handover success, but the RRC connection re-establishment flow process of terminal but occurs in the cell-of-origin neither a residential quarter of Target cell on.
Description according to MANET mobile robustness optimization (MRO) function, when network side finds that terminal once Radio Link Failure occurred, network side network element (can be called and send network element) can send to the before network element (reception network element) of service terminal of reporting errors by X2 interface message (RLF indication message) with the Radio Link Failure situation, before introducing RN, connect by X2 interface between transmission network element and the reception network element.After introducing RN, send network element and receive between the network element and under a lot of scenes, have intermediate NE, DeNB for example, because do not comprise the routing iinformation of any Target cell in the RLF indication message, and RLF indication message can send to DeNB itself, also can send to RN under the DeNB or the neighbours eNB of DeNB, and DeNB how correct route RLF indication message is clear and definite in public technology.
A kind of alternative method is to send when network element sends RLF indication message to carry clear and definite routing iinformation, and cost is very large to the modification of agreement, has compatibility issue; Another kind of alternative method is to utilize the PCI information in the RLFindication message to carry out route, but be that RRC connects when setting up in the mode that sends network element and admit terminal, this PCI field is invalid, and DeNB can't use this field to carry out effective route under this condition at all.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of wireless relay system interface message processing method and system, the interface message in the wireless relay system can be routed to correct purpose network element.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of processing method of wireless relay system interface message, the method comprises:
Send network element and obtain the Radio Link Failure report, and the generation interface message sends to intermediate NE;
Described intermediate NE receives described interface message, and indication is transmitted to the reception network element with described interface message according to the route in the described interface message.
Wherein, described transmission network element obtains the Radio Link Failure report, for:
Terminal accesses described transmission network element by Radio Resource control (RRC) connection building process, and described transmission network element was known when connection failure with wireless network side occured described terminal, obtained Radio Link Failure corresponding to described connection failure and report.
Described Radio Link Failure report comprises: cell information one, cell information two, cell information three, Delay, Fail Type information and wireless measurement information.
Described Fail Type information is Radio Link Failure or handoff failure;
When described Fail Type information is Radio Link Failure, when carrying out the minizone switching and described connection failure occurs for terminal, described cell information one provides the information of the residential quarter of service for described terminal;
When described Fail Type information was handoff failure, described cell information one carried out the information of the Target cell of minizone switching for terminal;
After described cell information two carried out the minizone switching and described connection failure occurs for terminal, terminal was initiated the information of the Target cell of RRC connection re-establishment flow process;
Described cell information three carries out switch the minizone provides the residential quarter of service before for described terminal information for terminal;
The information of described residential quarter is evolution wireless access system cellular global identity (ECGI) numbering, physical cell identity (PCI) or the frequency information of residential quarter.
Described interface message comprises parameter: RRC connects foundation indication (RRC Conn Setup Indicator) and the indication of described route;
Described route indication comprises described cell information one, cell information two, cell information three, Delay, Fail Type information and wireless measurement information.
Described interface message is Radio Link Failure indication (RLF indication) message;
Described route is designated as UE Radio Link Failure report (UE RLF Report Container).
Described transmission network element sends to intermediate NE with interface message, for: the Fail Type information during described transmission network element is reported according to described Radio Link Failure,
When described Fail Type information is Radio Link Failure, determine that the network element of described cell information one ownership is described reception network element, to and described reception network element between have X2 interface and and self have the intermediate NE of X2 interface to send described interface message;
When described Fail Type information is handoff failure, determine that the network element of described cell information three ownership is described reception network element, to and described reception network element between X2 interface is arranged and and self has the intermediate NE of X2 interface to send described interface message.
Described transmission network element is via node (RN) or base station (eNB), and described reception network element is RN, and described intermediate NE is the admittance base station (DeNB) of described reception network element access; Perhaps,
Described transmission network element is RN, and described reception network element is eNB, and described intermediate NE is the DeNB of described transmission network element access.
Described intermediate NE is transmitted to the reception network element according to the route indication information in the described interface message with described interface message, for: described intermediate NE according to the Fail Type information in the described route indication information,
When described Fail Type information is Radio Link Failure, determine that the network element of described cell information one ownership is described reception network element, transmit to described reception network element and send described interface message;
When described Fail Type information is handoff failure, determine that the network element of described cell information three ownership is described reception network element, send described interface message to described switching through.
The present invention also provides a kind for the treatment of system of wireless relay system interface message, comprising: send network element, intermediate NE and reception network element, wherein:
Described transmission network element is used for obtaining the Radio Link Failure report, and the generation interface message sends to described intermediate NE;
Described intermediate NE is used for receiving described interface message, and indication is transmitted to described reception network element with described interface message according to the route in the described interface message.
Described transmission network element also is used in terminal by the access of Radio Resource control (RRC) connection building process, and knows when connection failure with wireless network side occured described terminal, obtains Radio Link Failure corresponding to described connection failure and reports.
Described Radio Link Failure report comprises: cell information one, cell information two, cell information three, Delay, Fail Type information and wireless measurement information.
Described Fail Type information is Radio Link Failure or handoff failure;
When described Fail Type information is Radio Link Failure, when carrying out minizone switching and terminal and wireless network side connection failure for terminal, described cell information one provides the information of the residential quarter of service for described terminal;
When described Fail Type information was handoff failure, described cell information one carried out the information of the Target cell of minizone switching for terminal;
Described cell information two carry out for terminal that the minizone is switched and terminal and wireless network side connection failure after, the information of the Target cell of terminal initiation RRC connection re-establishment flow process;
Described cell information three carries out switch the minizone provides the residential quarter of service before for described terminal information for terminal;
The information of described residential quarter is ECGI numbering, PCI or the frequency information of residential quarter.
Described interface message comprises: RRC connects foundation indication (RRC Conn Setup Indicator) and described route indication information;
Described route indication information comprises described cell information one, cell information two, cell information three, Delay, Fail Type information and wireless measurement information.
Described interface message is RLF indication message;
Described route is designated as UE RLF Report Container.
Described transmission network element, also be used for the Fail Type information according to described Radio Link Failure report, when described Fail Type information is Radio Link Failure, the network element of determining described cell information one ownership is described reception network element, to and described reception network element between have X2 interface and and self have the intermediate NE of X2 interface to send described interface message; When described Fail Type information is handoff failure, determine that the network element of described cell information three ownership is described reception network element, to and described reception network element between X2 interface is arranged and and self has the intermediate NE of X2 interface to send described interface message.
Described intermediate NE, also be used for the Fail Type information according to described route indication, when described Fail Type information is Radio Link Failure, determine that the network element of described cell information one ownership is described reception network element, transmit to described reception network element and send described interface message; When described Fail Type information is handoff failure, determine that the network element of described cell information three ownership is described reception network element, send described interface message to described switching through.
The processing method of wireless relay system interface message of the present invention and system, send network element when transmission interface message, carry parameter route indication in interface message, indication just can be routed to this interface message correct purpose network element, namely receive network element according to route.In addition, carrying the indication of parameter route in interface message does not need agreement is changed, and realizes simple.
Description of drawings
Fig. 1 is typical cellular radio Communication system structural representation;
Fig. 2 is the operation principle schematic diagram of RN in the prior art;
Fig. 3 is a kind of typical wireless relay network configuration diagram in the prior art;
Fig. 4 is the structural representation of supporting the chain of command X2 interface protocol stack of RN in the prior art;
Fig. 5 is wireless relay system interface message process flow figure of the present invention;
Fig. 6 is a kind of typical wireless relay network configuration diagram that wireless relay system interface message processing method of the present invention is used.
Embodiment
The scene of a kind of permission of mobile robustness optimization function is: terminal is entering idle condition with the wireless network side connection failure and after carrying out RRC connection re-establishment failure, and then terminal can enter connected state by the RRC connection building process.Because, this moment, terminal was to enter connected state by RRC connection building process rather than RRC connection re-establishment flow process, so receive that RRC connects the network element of setting up request message and can't obtain the parameters such as PCI, C-RNTI, be that PCI field, the C-RNTI field that the RRC connection is set up in the request message is invalid, therefore, the network element that is routed to the generation connection failure that this network element also just can't be correct with interface message according to the PCI field.
The present invention is based on above-mentioned application scenarios and proposed a kind of wireless relay system interface message processing method as shown in Figure 5, comprising:
Step 501 sends network element and obtain the Radio Link Failure report, and the generation interface message sends to intermediate NE;
Step 502, intermediate NE receiving interface message, and according to the route in the interface message indication interface message is transmitted to the reception network element.
The prerequisite of wireless relay system interface message processing method of the present invention is: have X2 interface between transmission network element and the intermediate NE; And also there is X2 interface between intermediate NE and the reception network element.
Carry out the minizone for terminal and switch, if terminal and wireless network side connection failure, after connection failure, terminal is initiated RRC connection re-establishment flow process so, and enters Idle state after RRC connection re-establishment failure.Then, terminal sends network element by RRC connection building process access, sends network element and knows when connection failure with wireless network side occured terminal, obtains Radio Link Failure corresponding to connection failure and reports.
This Radio Link Failure report comprises: cell information one, cell information two, cell information three, Delay, Fail Type information and wireless measurement information.
Wherein, Fail Type information is Radio Link Failure or handoff failure;
When Fail Type information is Radio Link Failure, when carrying out that the minizone is switched and connection failure occurs for terminal, cell information one provides the information of the residential quarter (may be the cell-of-origin of switching, also may be the Target cell that switches) of service for terminal;
When Fail Type information was handoff failure, cell information one carried out the information of the Target cell of minizone switching for terminal;
After cell information two carried out the minizone switching and connection failure occurs for terminal, terminal was initiated the information of the Target cell of RRC connection re-establishment flow process;
Cell information three carries out switch the minizone provides the residential quarter (cell-of-origin of namely switching) of service before for terminal information for terminal;
The information of the above-mentioned residential quarter that relates to is ECGI numbering, PCI or the frequency information of residential quarter.
The interface message that sends the network element generation comprises parameter: RRC connects foundation indication (RRC Conn Setup Indicator) and route indication.
Wherein, the route indication comprises cell information one, cell information two, cell information three, Delay, Fail Type information and wireless measurement information; In addition, because the transmission network element is to find that connection failure once occured terminal after terminal is by the access of RRC connection building process, therefore, need in interface message, carries parameters R RC and connect the foundation indication.
Preferably, the interface message of proposition of the present invention is RLF indication message; Route is designated as UE RLF Report Container.
After generating interface message, send network element interface message is sent to intermediate NE, be specially: send network element according to the Fail Type information in the Radio Link Failure report,
When Fail Type information was Radio Link Failure, the network element of determining cell information one ownership was for receiving network element, to and receive have between the network element X2 interface and and the intermediate NE transmission interface message of X2 interface self arranged;
When Fail Type information was handoff failure, the network element of determining cell information three ownership was for receiving network element, to and receive and X2 interface arranged between the network element and and the intermediate NE transmission interface message of X2 interface self arranged.
Preferably, sending network element is RN or eNB, and the reception network element is RN, and intermediate NE is for receiving the DeNB of network element access; Perhaps, the transmission network element is RN, and the reception network element is eNB, and intermediate NE is for sending the DeNB of network element access.
It is to be noted, when the reception network element is RN, because the ECGI of RN residential quarter numbering is identical with the base station numbering of the ECGI numbering of the residential quarter of the DeNB of its access, therefore, send network element according to the ECGI numbering of cell information one or cell information three, can directly interface message be sent to the DeNB of the RN access of cell information one or cell information three ownership.
After receiving interface message, indication is transmitted to the reception network element with interface message to intermediate NE according to the route in the interface message, is specially: the Fail Type information during intermediate NE is indicated according to route,
When Fail Type information is Radio Link Failure, determine that the network element of cell information one ownership for receiving network element, send interface message to receiving the network element forwarding;
When Fail Type information is handoff failure, determine that the network element of cell information three ownership for receiving network element, sends described interface message to switching through.
Below by specific embodiment technical scheme of the present invention is described.
Embodiment one
As shown in Figure 6, suppose that the application scenarios among this embodiment is: UE and wireless network side connection failure occur (for the ease of subsequent descriptions terminal switches to the process of a residential quarter (referred to as target RN2 residential quarter) of RN2 from the residential quarter (referred to as DeNB1 residential quarter, source) of DeNB1, referred to as connection failure), terminal enters Idle state; The terminal of Idle state is linked into DeNB2, and DeNB2 sends RLF indication message, is routed to purpose network element RN2 through DeNB1, and then the processing method to RLF indication message comprises the steps: among this embodiment
Step 1, DeNB2 sends RLF indication message to DeNB1, carries parameters R RC in the message and connects foundation indication (RRC Conn Setup Indicator) and UE RLF Report Container.
Among this embodiment, handover success once behind the starting up of terminal.
When again switching, terminal switches to the process of target RN2 residential quarter from DeNB1 residential quarter, source connection failure occurs, then, terminal is initiated RRC connection re-establishment (Re-establishment) flow process, and target network element is RN2; Terminal is entering Idle state after the RRC connection re-establishment failure of RN2.
The terminal of Idle state is by RRC connection building process access DeNB2, inform that simultaneously connection failure occured DeNB2 self, at this moment, DeNB2 obtains corresponding Radio Link Failure report (RLF report) error reporting, in this report: cell information one is the ECGI numbering of target RN2 residential quarter, cell information two is the ECGI numbering of target RN2 residential quarter, cell information three is the ECGI numbering of DeNB1 residential quarter, source, and Fail Type information is RLF (type that switches to the connection failure that occurs the process of target RN2 residential quarter in terminal from DeNB1 residential quarter, source is Radio Link Failure).
Be RLF according to Fail Type information, DeNB2 will be to the home network element of cell information one, be that RN2 sends RLF indication message.Because the base station numbering of RN residential quarter and DeNB residential quarter ECGI numbering is in full accord, therefore, DeNB2 is considered as the target RN2 residential quarter of cell information one correspondence the residential quarter of DeNB1 administration, thereby directly sends RLF indication message to DeNB1.
Because terminal is based on Idle state access DeNB2, in this case, DeNB2 will carry RRC and connect the foundation indication in RLF indication message, carry simultaneously UE RLF Report Container.Comprised six kinds of information in the Radio Link Failure report that DeNB2 obtains among this UE RLF Report Container, be cell information one, cell information two, cell information three, Delay, Fail Type information and wireless measurement information.
Step 2, DeNB1 receives RLF indication message, connects according to the parameters R RC that carries in the message and sets up indication and UE RLF Report Container, and the purpose network element of judging this message is RN2, and this message is transmitted to RN2; RN2 judges the reason of connection failure.
Concrete, after DeNB1 receives RLF indication message, connect to set up indication according to comprising RRC in this message, can determine that namely it is invalid that PCI, C-RNTI, RRC in this message rebuilds these parameters such as cell ID (Reestablishment Cell ID); Then DeNB1 finds after further checking UE RLFReport Container, the home network element of cell information one is not DeNB1 itself but RN2 (finding that namely this message is not to send to DeNB1 but RN2), therefore, DeNB1 is forwarded to RN2 with RLFindication message.
After RN2 receives RLF indication message, connect the foundation indication according to RRC and can determine that these parameters such as PCI, C-RNTI, RRC reconstruction cell ID (Reestablishment Cell ID) are invalid; Then RN2 finds after further checking UE RLF Report Container, the home network element of cell information one is oneself, namely this RLF indication message is issued oneself, RN2 judges the former of connection failure because cross late handoff failure (Too late HO) according to the Delay among the UE RLF Report Container and Fail Type information so, herein be embodied as prior art, repeat no more.
Embodiment two
As shown in Figure 6, suppose that the application scenarios among this embodiment is: switch to a residential quarter (referred to as target DeNB1 residential quarter) the rear generation connection failure of DeNB1 from the residential quarter (referred to as RN2 residential quarter, source) of RN2 in terminal, terminal enters Idle state; The terminal of Idle state is linked into RN3, and RN3 sends RLFindication message, is routed to purpose network element RN2 through DeNB1, and then the processing method to RLF indication message comprises the steps: among this embodiment
Step 1, RN3 sends RLF indication message to DeNB1, carries parameters R RC in the message and connects foundation indication and UE RLF Report Container.
Among this embodiment, after terminal switches to target DeNB1 residential quarter from RN2 residential quarter, source connection failure occurs very soon, then, terminal is initiated RRC connection re-establishment flow process, and the target network element of this flow process is RN2; Terminal is entering Idle state after the RRC connection re-establishment failure of RN2.
The terminal of Idle state is by RRC connection building process access RN3, inform that simultaneously connection failure occured RN3 self, at this moment, RN3 obtains corresponding Radio Link Failure report, in this report: cell information one is the ECGI numbering of target DeNB1 residential quarter, cell information two is the ECGI numbering of RN2 residential quarter, source, cell information three is the ECGI numbering of RN2 residential quarter, source, and Fail Type information is handoff failure (type that namely switches to the connection failure that occurs behind the target DeNB1 residential quarter from RN2 residential quarter, source in terminal is handoff failure).
Be handoff failure according to Fail Type information, RN3 will be to the home network element of cell information three, be that RN2 sends RLF indication message.Because the base station numbering of RN residential quarter and DeNB residential quarter ECGI numbering is in full accord, therefore, RN3 is considered as the RN2 residential quarter, source of cell information three correspondences the residential quarter of DeNB1 administration, thereby directly sends RLF indication message to DeNB1.
Because terminal is based on Idle state access RN3, in this case, RN3 will carry parameters R RC and connect the foundation indication in RLF indication message, carry simultaneously parameter UE RLF Report Container.Six kinds of information in the Radio Link Failure report that RN3 obtains have been comprised among this UE RLF Report Container: cell information one, cell information two, cell information three, Delay, Fail Type information and wireless measurement information.
Step 2, DeNB1 receives RLF indication message, connects according to the RRC that carries in the message and sets up indication and UE RLF Report Container, and the purpose network element of judging this message is RN2, and this message is transmitted to RN2; RN2 judges the reason of connection failure.
Concrete, after DeNB1 receives RLF indication message, connect to set up indication according to comprising RRC in this message, can determine that namely it is invalid that PCI, C-RNTI, RRC in this message rebuilds these parameters such as cell ID (Reestablishment Cell ID); Then DeNB1 finds after further checking UE RLF Report Container, the home network element of cell information three is not DeNB1 itself but RN2 (finding that namely this message is not to send to DeNB1 but RN2), therefore, DeNB1 is forwarded to RN2 with RLFindication message.
After RN2 receives RLF indication message, connect the foundation indication according to RRC and can determine that these parameters such as PCI, C-RNTI, RRC reconstruction cell ID (Reestablishment Cell ID) are invalid; Then RN2 finds after further checking UE RLF Report Container, the home network element of cell information three is oneself, namely this RLF indication message is issued oneself, and RN2 judges the former of connection failure because switch too early failure (Too early HO) according to the Delay in the UE RLF Report Container information and Fail Type information so.
Embodiment three
As shown in Figure 6, suppose that the application scenarios among this embodiment is: switch to a residential quarter (referred to as target DeNB1 residential quarter) the rear generation connection failure of DeNB1 from the residential quarter (referred to as RN2 residential quarter, source) of RN2 in terminal, terminal enters Idle state; The terminal of Idle state is linked into eNB, and eNB sends RLFindication message, is routed to purpose network element RN2 through DeNB1, and then the processing method to RLF indication message comprises the steps: among this embodiment
Step 1, eNB sends RLF indication message to DeNB1, carries parameters R RC in the message and connects foundation indication and UE RLF Report Container.
Among this embodiment, after terminal switches to target DeNB1 residential quarter from RN2 residential quarter, source connection failure occurs very soon, then, terminal is initiated RRC connection re-establishment flow process, and the target network element of this flow process is RN3; Terminal is entering Idle state after the RRC connection re-establishment failure of RN3.
The terminal of Idle state is by RRC connection building process access eNB, inform that simultaneously connection failure occured eNB self, at this moment, eNB obtains corresponding Radio Link Failure report, in this report: cell information one is the ECGI numbering of target DeNB1 residential quarter, cell information two is the ECGI numbering of RN3 residential quarter, cell information three is the ECGI numbering of RN2 residential quarter, source, and Fail Type information is handoff failure (type that namely switches to the connection failure that occurs behind the target DeNB1 residential quarter from RN2 residential quarter, source in terminal is handoff failure).
Be handoff failure according to Fail Type information, eNB will be to the home network element of cell information three, be that RN2 sends RLF indication message.Because the base station numbering of RN residential quarter and DeNB residential quarter ECGI numbering is in full accord, therefore, eNB is considered as the RN2 residential quarter, source of cell information three correspondences the residential quarter of DeNB1 administration, thereby directly sends RLF indication message to DeNB1.
Because terminal is based on Idle state access eNB, in this case, eNB will carry parameters R RC and connect the foundation indication in RLF indication message, carry simultaneously parameter UE RLF Report Container.Six kinds of information in the Radio Link Failure report that eNB obtains have been comprised among this UE RLF Report Container: cell information one, cell information two, cell information three, Delay, Fail Type information and wireless measurement information.
Step 2, DeNB1 receives RLF indication message, connects according to the RRC that carries in the message and sets up indication and UE RLF Report Container, and the purpose network element of judging this message is RN2, and this message is transmitted to RN2; RN2 judges the reason of connection failure.
Concrete, after DeNB1 receives RLF indication message, connect to set up indication according to comprising RRC in this message, can determine that namely it is invalid that PCI, C-RNTI, RRC in this message rebuilds these parameters such as cell ID (Reestablishment Cell ID); Then DeNB1 finds after further checking UE RLF Report Container, the home network element of cell information three is not DeNB1 itself but RN2 (finding that namely this message is not to send to DeNB1 but RN2), therefore, DeNB1 is forwarded to RN2 with RLF indication message.
After RN2 receives RLF indication message, connect the foundation indication according to RRC and can determine that these parameters such as PCI, C-RNTI, RRC reconstruction cell ID (Reestablishment Cell ID) are invalid; Then RN2 finds after further checking UE RLF Report Container, the home network element of cell information three is oneself, namely this RLF indication message is issued oneself, and RN2 judges the former in wrong cell failure (Wrong cell HO) of connection failure according to the Delay among the UE RLF ReportContainer and Fail Type information so.
Embodiment four
As shown in Figure 6, suppose that the application scenarios among this embodiment is: the RRC that eNB receives terminal connects and to find that connection failure once occured this terminal after setting up request message, then eNB sends RLF indication message after getting access to the Radio Link Failure report, be transmitted to purpose network element RN3 through DeNB1, then the processing method to RLF indication message comprises the steps: among this embodiment
Step 1, eNB sends RLF indication message to DeNB1, carries parameters R RC in the message and connects foundation indication and UE RLF Report Container.
Among this embodiment, terminal informs simultaneously that by RRC connection building process access eNB connection failure occured eNB self, and then eNB obtains corresponding Radio Link Failure report, in this report: Fail Type information is RLF, and cell information one is the ECGI numbering of RN3 residential quarter.
Be RLF according to Fail Type information, eNB will be to the network element of cell information one ownership, be that RN3 sends RLF indication message.Because the base station numbering of RN residential quarter and DeNB residential quarter ECGI numbering is in full accord, and between eNB and the DeNB1 X2 interface is arranged, therefore, eNB is considered as the DeNB1 residential quarter with the RN3 residential quarter of cell information one correspondence, thereby directly sends RLF indication message to DeNB1.
Carry the content of Radio Link Failure report in the RLF indication message by UE RLF Report Container, be the mistake of the connection failure of discovery after terminal is by the access of RRC connection building process owing to eNB again, so also carried the RRC connection in this message and set up indication.
Step 2, DeNB1 receives RLF indication message, and is transmitted to purpose network element RN3.
Concrete, after DeNB1 receives RLF indication message, connect to set up indication according to comprising RRC in this message, can determine that namely it is invalid that PCI, C-RNTI, RRC in this message rebuilds these parameters such as cell ID (Reestablishment Cell ID); DeNB1 further checks UE RLF Report Container, is that RLF can determine that the network element of cell information one ownership is the purpose network element of this RLF indication message according to Fail Type information.
Among this embodiment, DeNB1 can determine that according to the ECGI numbering of cell information one correspondence the network element of its ownership is RN3, and namely this RLF indication message is not to send to own but RN3; Have X2 interface between DeNB1 and the RN3 simultaneously, thereby DeNB is transmitted to RN3 with RLF indication message by X2 interface.
Embodiment five
As shown in Figure 6, suppose that the application scenarios among this embodiment is: the RRC that RN2 receives terminal connects and to find that connection failure once occured this terminal after setting up request message, then RN2 sends RLF indication message after getting access to the Radio Link Failure report, be transmitted to purpose network element eNB through DeNB1, then the processing method to RLF indication message comprises the steps: among this embodiment
Step 1, RN2 sends RLF indication message to DeNB1, carries parameters R RC in the message and connects foundation indication and UE RLF Report Container.
Among this embodiment, terminal informs simultaneously that by RRC connection building process access RN2 connection failure occured RN2 self, and then RN2 obtains corresponding Radio Link Failure report, in this report: Fail Type information is handoff failure, and cell information three is the ECGI numbering of eNB residential quarter.
Be handoff failure according to Fail Type information, RN2 will be to the network element of cell information three ownership, be that eNB sends RLF indication message.Because RN has and only have one to be connected to the DeNB that self accesses, therefore, the message that RN sends must be passed through DeNB.Among this embodiment, the RLF indication message that RN2 mails to eNB will send to first DeNB1, is transmitted to eNB by DeNB1.
Carry the content of Radio Link Failure report in the RLF indication message by UE RLF Report Container, be the mistake of the connection failure of discovery after terminal is by the access of RRC connection building process owing to RN2 again, so also carried the RRC connection in this message and set up indication.
Step 2, DeNB1 receives RLF indication message, and is transmitted to purpose network element eNB.
Concrete, after DeNB1 receives RLF indication message, connect to set up indication according to comprising RRC in this message, can determine that namely it is invalid that PCI, C-RNTI, RRC in this message rebuilds these parameters such as cell ID (Reestablishment Cell ID); DeNB1 further checks UE RLFReport Container, is that RLF can determine that the network element of cell information three ownership is the purpose network element of this RLF indication message according to Fail Type information.
Among this embodiment, DeNB1 can determine that according to the ECGI numbering of cell information one correspondence the network element of its ownership is eNB, and namely this RLF indication message is not to send to own but eNB; Have X2 interface between DeNB1 and the eNB simultaneously, thereby DeNB is transmitted to eNB with RLF indication message by X2 interface.
In order to realize above-mentioned processing method, this law provides a kind for the treatment of system of wireless relay system interface message, comprising: send network element, intermediate NE and reception network element, wherein:
Send network element, be used for obtaining the Radio Link Failure report, and the generation interface message sends to intermediate NE;
Intermediate NE is used for receiving interface message, and indication is transmitted to the reception network element with interface message according to the route in the interface message.
Wherein, send network element, also be used in terminal by the access of RRC connection building process, and knew when connection failure with wireless network side occured terminal, obtain Radio Link Failure corresponding to connection failure and report.
Above-mentioned Radio Link Failure report comprises: cell information one, cell information two, cell information three, Delay, Fail Type information and wireless measurement information.
Fail Type information is Radio Link Failure or handoff failure;
When Fail Type information is Radio Link Failure, when carrying out the minizone switching and described connection failure occurs for terminal, cell information one provides the information of the residential quarter of service for terminal;
When Fail Type information was handoff failure, cell information one carried out the information of the Target cell of minizone switching for terminal;
After cell information two carried out the minizone switching and described connection failure occurs for terminal, terminal was initiated the information of the Target cell of RRC connection re-establishment flow process;
Cell information three carries out switch the minizone provides the residential quarter of service before for terminal information for terminal;
The information of residential quarter is ECGI numbering, PCI or the frequency information of residential quarter.
Interface message comprises parameter: RRC connects foundation indication (RRC Conn Setup Indicator) and route indication;
The route indication comprises cell information one, cell information two, cell information three, Delay, Fail Type information and wireless measurement information.
Interface message is RLF indication message; Route is designated as UE RLF Report Container.
Send network element, also be used for the Fail Type information according to the Radio Link Failure report, when Fail Type information is Radio Link Failure, the network element of determining cell information one ownership is for receiving network element, to and receive have between the network element X2 interface and and the intermediate NE transmission interface message of X2 interface self arranged; When Fail Type information was handoff failure, the network element of determining cell information three ownership was for receiving network element, to and receive and X2 interface arranged between the network element and and the intermediate NE transmission interface message of X2 interface self arranged.
Intermediate NE also for the Fail Type information according to the route indication, when Fail Type information is Radio Link Failure, is determined the network element of cell information one ownership for receiving network element, transmits to the reception network element and send interface message; When Fail Type information is handoff failure, determine that the network element of cell information three ownership is for receiving network element, to switching through transmission interface message.
The above is preferred embodiment of the present invention only, is not for limiting protection scope of the present invention.
Claims (17)
1. the processing method of a wireless relay system interface message is characterized in that, the method comprises:
Send network element and obtain the Radio Link Failure report, and the generation interface message sends to intermediate NE;
Described intermediate NE receives described interface message, and indication is transmitted to the reception network element with described interface message according to the route in the described interface message.
2. the processing method of described wireless relay system interface message according to claim 1 is characterized in that, described transmission network element obtains the Radio Link Failure report, for:
Terminal accesses described transmission network element by Radio Resource control (RRC) connection building process, and described transmission network element was known when connection failure with wireless network side occured described terminal, obtained Radio Link Failure corresponding to described connection failure and report.
3. the processing method of described wireless relay system interface message according to claim 2, it is characterized in that, described Radio Link Failure report comprises: cell information one, cell information two, cell information three, Delay, Fail Type information and wireless measurement information.
4. the processing method of described wireless relay system interface message according to claim 3 is characterized in that,
Described Fail Type information is Radio Link Failure or handoff failure;
When described Fail Type information is Radio Link Failure, when carrying out the minizone switching and described connection failure occurs for terminal, described cell information one provides the information of the residential quarter of service for described terminal;
When described Fail Type information was handoff failure, described cell information one carried out the information of the Target cell of minizone switching for terminal;
After described cell information two carried out the minizone switching and described connection failure occurs for terminal, terminal was initiated the information of the Target cell of RRC connection re-establishment flow process;
Described cell information three carries out switch the minizone provides the residential quarter of service before for described terminal information for terminal;
The information of described residential quarter is evolution wireless access system cellular global identity (ECGI) numbering, physical cell identity (PCI) or the frequency information of residential quarter.
5. the processing method of described wireless relay system interface message according to claim 4 is characterized in that, described interface message comprises parameter, and: RRC connects and sets up indication (RRC Conn Setup Indicator) and described route is indicated;
Described route indication comprises described cell information one, cell information two, cell information three, Delay, Fail Type information and wireless measurement information.
6. the processing method of described wireless relay system interface message according to claim 5 is characterized in that,
Described interface message is Radio Link Failure indication (RLF indication) message;
Described route is designated as UE Radio Link Failure report (UE RLF Report Container).
7. according to claim 5 or the processing method of 6 described wireless relay system interface messages, it is characterized in that, described transmission network element sends to intermediate NE with interface message, for: described transmission network element according to the Fail Type information in the described Radio Link Failure report,
When described Fail Type information is Radio Link Failure, determine that the network element of described cell information one ownership is described reception network element, to and described reception network element between have X2 interface and and self have the intermediate NE of X2 interface to send described interface message;
When described Fail Type information is handoff failure, determine that the network element of described cell information three ownership is described reception network element, to and described reception network element between X2 interface is arranged and and self has the intermediate NE of X2 interface to send described interface message.
8. the processing method of described wireless relay system interface message according to claim 7 is characterized in that,
Described transmission network element is via node (RN) or base station (eNB), and described reception network element is RN, and described intermediate NE is the admittance base station (DeNB) of described reception network element access; Perhaps,
Described transmission network element is RN, and described reception network element is eNB, and described intermediate NE is the DeNB of described transmission network element access.
9. the processing method of described wireless relay system interface message according to claim 7, it is characterized in that, described intermediate NE is transmitted to the reception network element according to the route indication information in the described interface message with described interface message, for: described intermediate NE is according to the Fail Type information in the described route indication information
When described Fail Type information is Radio Link Failure, determine that the network element of described cell information one ownership is described reception network element, transmit to described reception network element and send described interface message;
When described Fail Type information is handoff failure, determine that the network element of described cell information three ownership is described reception network element, send described interface message to described switching through.
10. the treatment system of a wireless relay system interface message is characterized in that, comprising: send network element, intermediate NE and reception network element, wherein:
Described transmission network element is used for obtaining the Radio Link Failure report, and the generation interface message sends to described intermediate NE;
Described intermediate NE is used for receiving described interface message, and indication is transmitted to described reception network element with described interface message according to the route in the described interface message.
11. the treatment system of described wireless relay system interface message is characterized in that according to claim 9,
Described transmission network element also is used in terminal by the access of Radio Resource control (RRC) connection building process, and knows when connection failure with wireless network side occured described terminal, obtains Radio Link Failure corresponding to described connection failure and reports.
12. the treatment system of described wireless relay system interface message according to claim 11, it is characterized in that, described Radio Link Failure report comprises: cell information one, cell information two, cell information three, Delay, Fail Type information and wireless measurement information.
13. the treatment system of described wireless relay system interface message is characterized in that according to claim 12,
Described Fail Type information is Radio Link Failure or handoff failure;
When described Fail Type information is Radio Link Failure, when carrying out minizone switching and terminal and wireless network side connection failure for terminal, described cell information one provides the information of the residential quarter of service for described terminal;
When described Fail Type information was handoff failure, described cell information one carried out the information of the Target cell of minizone switching for terminal;
Described cell information two carry out for terminal that the minizone is switched and terminal and wireless network side connection failure after, the information of the Target cell of terminal initiation RRC connection re-establishment flow process;
Described cell information three carries out switch the minizone provides the residential quarter of service before for described terminal information for terminal;
The information of described residential quarter is ECGI numbering, PCI or the frequency information of residential quarter.
14. the treatment system of described wireless relay system interface message is characterized in that according to claim 13, described interface message comprises: RRC connects foundation indication (RRC Conn Setup Indicator) and described route indication information;
Described route indication information comprises described cell information one, cell information two, cell information three, Delay, Fail Type information and wireless measurement information.
15. the treatment system of described wireless relay system interface message is characterized in that according to claim 14,
Described interface message is RLF indication message;
Described route is designated as UE RLF Report Container.
16. according to claim 14 or the treatment system of 15 described wireless relay system interface messages, it is characterized in that,
Described transmission network element, also be used for the Fail Type information according to described Radio Link Failure report, when described Fail Type information is Radio Link Failure, the network element of determining described cell information one ownership is described reception network element, to and described reception network element between have X2 interface and and self have the intermediate NE of X2 interface to send described interface message; When described Fail Type information is handoff failure, determine that the network element of described cell information three ownership is described reception network element, to and described reception network element between X2 interface is arranged and and self has the intermediate NE of X2 interface to send described interface message.
17. the treatment system of described wireless relay system interface message is characterized in that according to claim 16,
Described intermediate NE, also be used for the Fail Type information according to described route indication, when described Fail Type information is Radio Link Failure, determine that the network element of described cell information one ownership is described reception network element, transmit to described reception network element and send described interface message; When described Fail Type information is handoff failure, determine that the network element of described cell information three ownership is described reception network element, send described interface message to described switching through.
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