CN111586669B

CN111586669B - Method and equipment for paging terminal under mobile relay

Info

Publication number: CN111586669B
Application number: CN202010314337.5A
Authority: CN
Inventors: 柯小婉; 许丽香; 王弘; 梁华瑞
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2012-11-28
Filing date: 2012-11-28
Publication date: 2023-06-30
Anticipated expiration: 2032-11-28
Also published as: CN103857036A; WO2014084595A1; CN111586669A; CN103857036B

Abstract

The method for paging the terminal under the mobile relay comprises the following steps: the core network node acquires new position information of the RN relay node; and the MME accessed by the UE acquires the position information of the RN from the core network node, determines a paging range of paging the UE, and initiates paging to the UE in the paging range. On the other hand, the embodiment of the invention also provides network side equipment. The proposal provided by the invention can reduce the paging range, avoid the waste of air interface resources, ensure that idle UE under RN can also rapidly and directionally page, and ensure that the paged UE can normally access service. The scheme provided by the invention has little change to the existing system, does not influence the compatibility of the system, and is simple and efficient to realize.

Description

Method and equipment for paging terminal under mobile relay

The present application is a divisional application of an invention patent application with application number 2012104951562 and the invention name of a method and a device for paging a terminal under mobile relay.

Technical Field

The invention relates to the technical field of mobile communication, in particular to a method and equipment for paging a terminal under a mobile relay.

Background

Fig. 1 is a schematic diagram of an LTE structure supporting an RN (Relay Node), as shown in fig. 1, in a radio access network of an LTE system, a radio resource management entity includes an eNB macro base station 101 and an RN102, and the RN102 accesses to a core network through another macro base station DeNB103. The enbs 101 are connected through an X2 interface, and each eNB is connected with an MME (Mobility Management Entity ) and an S-GW (Serving Gateway) 104 in a core network through an S1 interface; RN102 accesses DeNB103 through Un interface. The eNB103 provides X2 proxy (proxy) functionality between the RN102 and other enbs. DeNB103 provides S1 proxy functionality between RN102 and MME/S-GW 104. The proxy functions of S1 and X2 include transmission of UE-specific X2 and S1 signaling between RN102 and eNB101, RN102 and MME104, and transmission functions between RN102 and S-GW 104.

The existing S1 interface control plane protocol stack supporting relaying is shown in fig. 2. There is an S1 interface between the RN and its DeNB and an S1 interface between the DeNB and each MME in the MME pool. The DeNB processes and forwards all UE-specific S1 signaling between the RN and MME. The processing of the UE-specific S1 message by the DeNB includes modifying the S1 application protocol UE identities S1-appeides, transport layer addresses and GTP TEIDs and leaving the other parts of the message unchanged.

Existing relays are for fixed locations and do not support mobility between different cells. The problem facing operators today is that on high speed trains, e.g. 250-350 km, the quality of service provided by existing relays cannot meet the operator's requirements, e.g. high noise, high penetration loss, severe doppler frequency shift, low handover success rate, etc. The operators have therefore proposed a study of mobile relay. The mobile relay aims to solve the problems of the existing relay, improve the quality of service provided on a high-speed train and better meet the demands of users.

In the moving process, the relay is switched from one DeNB to another DeNB, and the problems in the prior art are that:

the location area that the RN serves for the UE under the RN is TA'. As the RN moves with the train between denbs, the UE to which it is accessing moves with the RN. Since TA' is not changed, this saves the procedure of UE TAU greatly, but UE does not initiate TAU to MME (abbreviated MME-UE) to which UE is accessed to update UE location when RN moves, so MME-UE does not know exact UE location. In the RN system architecture, as shown in fig. 2, all control and bearer related to RN are terminated in the IP layer of the DeNB protocol stack, i.e. MME-UE accessed by idle UE cannot directly find RN according to the address of RN, and the DeNB accessed by RN cannot be determined. When idle UE needs to be paged, because MME-UE does not know the current exact position of the UE nor the position of RN accessed by the UE, paging requests can be sent to all DeNBs through which the RN can pass along the line, because the existing railway route spans multiple cities, provinces are saved, the DeNBs on the backhaul network along the line are extremely large paging resource waste, and because the RN accessed by the UE can be accessed to one DeNB at the same time, all paging to the UE triggered by other DeNBs is resource waste.

Therefore, an effective technical solution is needed to solve the above technical problems.

Disclosure of Invention

The invention aims to at least solve one of the technical defects, and particularly, the invention can effectively locate the position of the terminal when the MME initiates paging by acquiring the position information of the RN accessed by the terminal.

On the one hand, the embodiment of the invention provides a method for paging a terminal under a mobile relay, which comprises the following steps:

the core network node acquires new position information of the RN relay node;

and the MME accessed by the UE acquires the position information of the RN from the core network node, determines a paging range of paging the UE, and initiates paging to the UE in the paging range.

The embodiment of the invention also provides network side equipment, which comprises a receiving module, an operation module and a sending module;

the receiving module is used for acquiring new position information of the RN relay node;

the operation module is used for determining a paging range of paging UE according to the acquired position information of the RN;

and the sending module is used for the MME accessed by the UE to initiate paging to the UE in the paging range.

The proposal provided by the invention can reduce the paging range, avoid the waste of air interface resources, ensure that idle UE under RN can also rapidly and directionally page, and ensure that the paged UE can normally access service. The scheme provided by the invention has little change to the existing system, does not influence the compatibility of the system, and is simple and efficient to realize.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

fig. 1 is a schematic diagram of an LTE structure supporting a Relay (RN);

fig. 2 is a diagram of an S1 interface control plane protocol stack supporting an RN in the prior art;

fig. 3 is a flowchart of a method for paging a terminal under a mobile relay according to an embodiment of the present invention;

fig. 4 is a workflow diagram of an application scenario one of the UE under the optimized paging mobile relay of the present invention;

fig. 5 is a workflow diagram of an application scenario two of the UE under the optimized paging mobile relay of the present invention;

fig. 6 is a workflow diagram of an application scenario three of the UE under the optimized paging mobile relay of the present invention;

fig. 7A is a flowchart illustrating an example one of an application scenario one of a UE under an optimized paging mobile relay according to the present invention;

fig. 7B is a flowchart illustrating an example two of an application scenario one of the UE under the paging mobile relay according to the present invention;

fig. 7C is a flowchart illustrating an example three of an application scenario one of a UE under an optimized paging mobile relay according to the present invention;

fig. 7D is a flowchart illustrating an example four of an application scenario one of the UE under the paging mobile relay of the present invention;

fig. 8A is a flowchart illustrating an example of an application scenario two of the UE under the paging mobile relay according to the present invention;

fig. 8B is an example two workflow diagram of an application scenario two of a UE under the paging mobile relay of the present invention;

fig. 8C is an example three workflow diagram of an application scenario two of a UE under the paging mobile relay of the present invention;

fig. 8D is an exemplary fourth workflow diagram of an application scenario two of a UE under the optimized paging mobile relay of the present invention;

fig. 9 is a flowchart illustrating an example of an application scenario three of the UE under the paging mobile relay of the present invention;

fig. 10 is a schematic structural diagram of a network side device according to an embodiment of the present invention.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless expressly stated otherwise, as understood by those skilled in the art. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or coupled. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

As used herein, a "terminal" or "terminal device" includes both devices having only wireless signal receivers without transmitting capabilities and devices having receiving and transmitting hardware capable of bi-directional communication over a bi-directional communication link, as will be appreciated by those skilled in the art. Such a device may include: cellular or other communication devices with or without a multi-line display; a Personal Communications System (PCS) that may combine voice and data processing, facsimile and/or data communications capabilities; personal Digital Assistants (PDAs) that may include radio frequency receivers and pagers, internet/intranet access, web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and/or a conventional laptop and/or palmtop computer or other appliance that includes a radio frequency receiver. As used herein, "terminal," "terminal device" may be portable, transportable, installed in a vehicle (aeronautical, maritime, and/or land-based), or adapted and/or configured to operate locally and/or in a distributed fashion at any other location(s) on earth and/or in space. The "terminal" and "terminal device" used herein may also be a communication terminal, a network access terminal, and a music/video playing terminal, for example, may be a PDA, an MID, and/or a mobile phone with a music/video playing function, and may be a smart tv, a set-top box, and other devices. The "base station" and "base station device" are network-side devices corresponding to the "terminal" and "terminal device".

In order to achieve the purpose of the present invention, an embodiment of the present invention provides a method for paging a terminal under a mobile relay, including the following steps:

the core network node acquires new position information of the RN relay node;

As shown in fig. 3, a flowchart of a method for paging a terminal under a mobile relay according to an embodiment of the present invention includes steps S310 to S320:

step S310: the core network node obtains new position information of the RN relay node.

In step S310, the core network node is a network device, and as an embodiment of the present invention, the core network node includes, but is not limited to, HSS, MME or MME that can be accessed by the UE under RN. The MME which can be accessed by the UE under the RN is the MME supporting the TA 'position area which serves the UE under the RN, and the TA' position area is the position area which serves the UE under the RN.

Specifically, the core network node obtains new location information of the RN in any one of the following manners:

when the RN position is changed, the core network node receives new position information of the RN from a target DeNB or a target MME; and

the core network node requests the current location information of the RN from all denbs associated with the RN. Specifically, all denbs associated are, for example, all denbs that can be passed along a public transportation line such as a railway, a subway, or the like. Obviously, all denbs associated may be configured or determined by the system according to the actual situation.

Specifically, the new location information of the RN includes:

the DeNB, TAI or MME newly accessed by the RN.

Step S320: and the MME accessed by the UE determines the paging range of the paging UE according to the position information of the RN, and initiates paging to the UE.

Specifically, in step S320, the MME to which the UE accesses acquires the location information of the RN from the core network node, determines a paging range for paging the UE, and initiates paging to the UE within the paging range.

Specifically, the MME accessed by the UE initiates paging to the UE in the paging range in any one of the following modes:

MME accessed by UE sends a paging request for paging the UE to DeNB in paging range; and

the MME accessed by the UE maps to the MME accessed by the RN according to the new position information of the RN, sends a paging request to the MME accessed by the RN, and forwards the paging request of the UE to the DeNB accessed by the RN by the MME accessed by the RN.

Specifically, when the core network node is an MME that can be accessed by the UE under the RN, the MME that can be accessed by the UE under the RN is an MME supporting a TA ' location area served by the UE under the RN, and the target DeNB or the target MME knows the MME that can be accessed by the UE according to the TA ' location area, where the TA ' location area is the location area served by the UE under the RN.

Furthermore, the MME to which the UE accesses obtains location information of the RN from the core network node, including but not limited to the following ways:

and the MME accessed by the UE acquires the position information of the RN through the identification of the RN accessed by the UE or the index of a TA 'position area, wherein the TA' position area is a position area serving the UE under the RN.

Further, when describing from the interaction point of each network element in the network, when the core network node is itself the MME to which the UE accesses, the steps S310 to S320 may be embodied by the workflow of fig. 4 or fig. 6; when the core network node is not an MME to which the UE can access under the RN, the steps S310 to S320 described above may be embodied by the workflow of fig. 5. These different workflows, but different application scenarios, are essentially consistent with the gist of the present invention. Examples in various application scenarios are further described below. In the following application scenario, all relevant denbs are exemplified by all denbs that can pass along a public traffic line such as a railway, a subway, and the like. Obviously, all denbs associated may be configured or determined by the system according to the actual situation.

The workflow of the invention for optimizing the application scenario one of the UE in the paging mobile relay is shown in figure 4.

In step 401, when the RN location is changed, the target DeNB or the target MME-RN updates the new location information of the RN to the MME-UE.

The TA broadcasted by the RN for the serving UE is TA' which is not changed when the RN moves. When the RN switches between denbs or updates the location, the target DeNB or the target MME-RN sends new location information to all the MMEs supporting TA', where the new location information may be a DeNB, TAI or MME to which the RN newly accesses.

In step 402, the MME-UE determines the paging range of the UE according to the obtained RN position and initiates paging.

After MME-UE obtains the position information of RN, narrowing the paging range of UE and sending the paging request of UE to DeNB in the range; or after the MME-UE maps to the MME-RN according to the current accessed position information of the RN, sending a paging request to the MME-RN, and forwarding the paging request of the UE to the DeNB accessed by the RN by the MME-RN.

The workflow of the second application scenario of the UE under the paging mobile relay is shown in fig. 5.

In step 501, when the RN location is changed, the target DeNB or the target MME-RN updates the new location information of the RN to the core network node.

When the RN is switched or the position is updated, the target DeNB or the target MME-RN updates the new position information to the core network node. The new location information may be DeNB, TAI or MME to which the RN newly accesses; the core network node may be a HSS or MME.

In step 502, the MME-UE obtains the current access position of the RN through the core network node.

For idle UE under RN service, when MME-UE (MME for short for UE access) receives downlink data notification and needs to initiate paging to idle UE, firstly, acquiring the current accessed position information of RN from a core network node through TA' or RN identification. When the position information of the RN is acquired from the core network node through the RN identification, the RN is required to send the identification of the RN to the MME-UE when the UE is attached or TAU is required to be carried out. The address of the centralized MME may be preconfigured.

In step 503, the mme-UE determines the paging range of the UE according to the obtained RN location and initiates paging.

As in step 402.

The working flow of the application scene III of the UE under the optimized paging mobile relay is shown in figure 6.

In step 601, the mme-UE requests the current location of the RN from all denbs that the RN can pass along.

MME-UE initiates RN position request to all DeNBs which can pass along the RN, and only the DeNB accessed by the RN returns response after receiving the request.

In step 602, the mme-UE determines a destination location for paging the UE according to the obtained RN location.

And the MME-UE sends the paging of the UE to the DeNB accessed by the RN according to the response.

The following is a further description of the application scenario of the present invention, and details of the standard already defined but not relevant will not be described in detail.

Application scenario example one

Based on the above method, fig. 7A shows a flowchart of an example one of an application scenario of the UE under the paging mobile relay. This embodiment takes the TAU procedure as an example. The following is a specific description of fig. 7A. A detailed description of steps irrelevant to the present invention is omitted here.

In step 7a01, the rn initiates a TAU request to the target DeNB.

In step 7a02, the target DeNB forwards the TAU request to the target MME-RN.

In step 7a03, the target MME-RN sends TAU accept to the RN.

In step 7a04, the RN sends TAU completion to the target MME-RN. If the location change of the RN is found, all TA' capable MME-UEs may be notified by the target DeNB or target MME-RN: the target DeNB may notify the MME-UE in two ways, step 7a05 and step 7a06, respectively; the target MME-RN may notify the MME-UE in two ways, step 7a08 and step 7a09, respectively.

Step 7a05, the target DeNB sends an update location notification to all MME-UEs supporting TA', updates the current location of the RN, and marks as update RN location selection 1, which may be the currently accessed TAI or DeNB or MME.

In step 7a06, the target DeNB sends an eNB configuration update to all MME-UEs supporting TA ', denoted as update RN location option 2, indicating the supported location area TA' newly added in the DeNB.

Step 7A07, after receiving the eNB configuration update, the MME-UE updates the current position of the RN and returns an eNB configuration update confirmation to the target DeNB.

In step 7a08, the target MME-RN sends an update location notification to all MME-UEs supporting TA', and updates the current location of the RN, denoted as update RN location selection 3, which may be the currently accessed TAI or DeNB or MME.

In step 7a09, the target MME-RN sends an update location request to all MME-UEs supporting TA', and updates the current location of the RN, denoted as update RN location selection 4, which may be the currently accessed TAI or DeNB or MME.

In step 7a10, the MME-UE sends a location update reply to the target MME-RN.

In step 7a11, the mme-UE receives a downlink data notification sent by the SGW-UE (short for SGW accessed by the UE) for the idle UE, and needs to initiate paging to the UE under the RN, and may send a paging message to the RN in two ways, and the RN pages the idle UE under the RN, which is step 7a12 and step 7a13 respectively.

In step 7a12, the mme-UE sends a paging message to the DeNB in the location of the RN, and marks as the paging option 1 of the sending UE.

In step 7A13, the MME-UE sends the paging message to the MME-RN where the RN is located.

In step 7a14, the mme-RN sends a paging message to the DeNB in the location where the RN is located, and marks as sending UE paging option 2.

In step 7a15, the denb forwards the paging message to the RN.

Application scenario one example two

Based on the above method, fig. 7B shows a flowchart of an example two of an application scenario of the UE under the optimized paging mobile relay. The present embodiment takes an intra-MME switching procedure of the X2 interface as an example. The following is a specific description of fig. 7B. A detailed description of steps irrelevant to the present invention is omitted here.

In step 7B01, the source DeNB sends a handover request to the target DeNB.

In step 7B02, the target DeNB sends a handover request acknowledgement to the source DeNB.

In step 7B03, the source DeNB sends RRC connection reconfiguration to the RN.

In step 7b04, the rn transmits RRC connection reconfiguration complete to the target DeNB.

Step 7B05, the target DeNB sends a path switch request to the target MME-RN.

Step 7B06, the target MME-RN sends a path switch request acknowledgement to the target DeNB. If the location change of the RN is found, all TA' capable MME-UEs may be notified by the target DeNB or target MME-RN: the target DeNB may notify the MME-UE in two ways, step 7B07 and step 7B08, respectively; the target MME-RN may notify the MME-UE in two ways, step 7B10 and step 7B11, respectively.

Step 7B07 to step 7B17 are the same as step 7a05 to step 7a15, and are not described here again.

Application scenario one example three

Based on the above method, fig. 7C shows a flowchart of an example three of an application scenario of the UE under the optimized paging mobile relay. The present embodiment uses an intra-MME switching procedure of the S1 interface as an example. The following is a specific description of fig. 7C. A detailed description of steps irrelevant to the present invention is omitted here.

In step 7C01, the source DeNB sends a handover request to the target MME-RN.

In step 7C02, the target MME-RN sends a handover request to the target DeNB.

Step 7C03, the target DeNB sends a handover request acknowledgement to the target MME-RN.

In step 7C04, the target MME-RN sends a handover command to the source DeNB.

In step 7C05, the source DeNB sends a handover command to the RN.

In step 7c06, the rn sends RRC connection reconfiguration complete to the target DeNB.

Step 7C07, the target DeNB sends a handover notification to the target MME-RN. If the location change of the RN is found, all TA' capable MME-UEs may be notified by the target DeNB or target MME-RN: the target DeNB may notify the MME-UE in two ways, step 7C08 and step 7C09, respectively; the target MME-RN may notify the MME-UE in two ways, step 7C11 and step 7C12, respectively.

Step 7C08 to step 7C18 are the same as step 7a05 to step 7a15, and will not be described here again.

Application scenario one example four

Based on the above method, fig. 7D shows a flowchart of an example four of an application scenario of the UE under the optimized paging mobile relay. The present embodiment uses an inter-MME handover procedure as an example. The following is a specific description of fig. 7D. A detailed description of steps irrelevant to the present invention is omitted here.

In step 7D01, the source DeNB sends a handover request to the source MME-RN.

In step 7D02, the source MME-RN sends a forward relocation request to the target MME-RN.

In step 7D03, the target MME-RN sends a handover request to the target DeNB.

Step 7D04, the target DeNB sends a handover request acknowledgement to the target MME-RN.

Step 7D05, the target MME-RN sends a forwarding relocation response to the source MME-RN.

In step 7D06, the target MME-RN sends a handover command to the source DeNB.

In step 7D07, the source DeNB sends a handover command to the RN.

In step 7d08, the rn transmits RRC connection reconfiguration complete to the target DeNB.

In step 7D09, the target DeNB sends a handover notification to the target MME-RN. If the location change of the RN is found, all TA' capable MME-UEs may be notified by the target DeNB or target MME-RN: the target DeNB may notify the MME-UE in two ways, step 7D10 and step 7D11, respectively; the target MME-RN may notify the MME-UE in two ways, step 7D13 and step 7D14, respectively.

Step 7D10 to step 7D20 are the same as step 7a05 to step 7a15, and are not described here again.

Application scenario two examples one

Based on the above method, fig. 8A shows a flowchart of an example one of an application scenario of the UE under the optimized paging mobile relay. This embodiment takes the TAU procedure as an example. The following is a specific description of fig. 8A. A detailed description of steps irrelevant to the present invention is omitted here.

In step 8a01, the UE attaches under the RN or TAU to the MME-UE, the RN may include the RN identifier in the initial UE message or uplink direct transmission message carrying the UE attach or TAU, and the MME-UE may know under which RN the UE is currently accessed in two ways, and map the RN directly through the RN identifier or through TA' attached by the UE.

In step 8a02, the rn initiates a TAU request to the target DeNB.

In step 8a03, the target DeNB forwards the TAU request to the target MME-RN.

In step 8A04, the target MME-RN sends TAU acceptance to the RN.

In step 8a05, the RN sends TAU to the target MME-RN to complete. If a location change of the RN is found, the centralized MME node (for uniformly recording the location of the RN) may be notified by the target DeNB or the target MME-RN or the HSS may be notified by the target MME-RN: the target DeNB may notify the centralized MME in two ways, step 8a06 and step 8a07, respectively; the target MME-RN can inform the centralized MME in two ways, namely, step 8A09 and step 8A10; the target MME-RN may inform the HSS through step 8a 10.

In step 8a06, the target DeNB sends an update location notification to the support-centric MME, updates the current location of the RN, and marks as update RN location selection 1, which may be the TAI or DeNB or MME currently accessed.

In step 8a07, the target DeNB sends an eNB configuration update to the centralized MME, denoted as update RN location option 2, indicating the newly added supported location area TA' in the DeNB.

Step 8A08, after receiving the eNB configuration update, the centralized MME updates the current position of the RN and returns an eNB configuration update confirmation to the target DeNB.

In step 8a09, the target MME-RN sends an update location notification to the centralized MME, and updates the current location of the RN, denoted as update RN location selection 3, which may be a TAI or DeNB or MME currently accessed.

In step 8a10, the target MME-RN sends an update location request to the centralized MME or HSS, and updates the current location of the RN, denoted as update RN location selection 4, which may be a TAI or DeNB or MME currently accessed.

In step 8a11, the centralized MME or HSS sends a location update answer to the target MME-RN.

In step 8a12, the mme-UE receives a downlink data notification for idle UE sent by the SGW-UE (short for SGW to which the UE accesses), and needs to initiate paging to the UE under the RN.

In step 8a12, the MME-UE sends a location query request to the centralized MME or HSS according to the RN identifier or TA', and obtains the current location of the RN, which may be the TAI or DeNB or MME that is currently accessed. According to the current position of the RN, the MME-UE can send paging information to the RN in two ways, and the RN pages idle UE below the paging information, namely, step 8A15 and step 8A16.

In step 8a15, the mme-UE sends a paging message to the DeNB in the location of the RN, and marks as the paging option 1 of the sending UE.

In step 8a16, the MME-UE sends a paging message to the MME-RN where the RN is located, and marks as sending UE paging option 2.

In step 8a17, the mme-RN sends a paging message to the DeNB in the location where the RN is located.

In step 8a18, the denb forwards the paging message to the RN.

Application scenario two examples two

Based on the above method, fig. 8B shows a flowchart of an application scenario two example two of the UE under the optimized paging mobile relay. The present embodiment takes an intra-MME switching procedure of the X2 interface as an example. The following is a specific description of fig. 8B. The following is a specific description of fig. 8B. A detailed description of steps irrelevant to the present invention is omitted here.

In step 8b01, the UE attaches under the RN or TAU to the MME-UE, the RN may include the RN identifier in the initial UE message or uplink direct transmission message carrying the UE attach or TAU, and the MME-UE may know under which RN the UE is currently accessed in two ways, and map the RN directly through the RN identifier or through the TA' attached by the UE.

In step 8B02, the source DeNB sends a handover request to the target DeNB.

In step 8B03, the target DeNB sends a handover request acknowledgement to the source DeNB.

In step 8B04, the source DeNB sends RRC connection reconfiguration to the RN.

In step 8b05, the rn sends RRC connection reconfiguration complete to the target DeNB.

Step 8B06, the target DeNB sends a path switch request to the target MME-RN.

Step 8B07, the target MME-RN sends a path switch request acknowledgement to the target DeNB. If a location change of the RN is found, the centralized MME node (for uniformly recording the location of the RN) may be notified by the target DeNB or the target MME-RN or the HSS may be notified by the target MME-RN: the target DeNB may notify the centralized MME in two ways, step 8B08 and step 8B09, respectively; the target MME-RN can inform the centralized MME in two ways, namely, step 8B11 and step 8B12; the target MME-RN may inform the HSS through step 8B 12.

Step 8B08 to step 8B20 are the same as step 8a06 to step 8a18, and will not be described again here.

Application scenario two examples three

Based on the above method, fig. 8C shows a flowchart of a second example of an application scenario three of the UE under the optimized paging mobile relay. The present embodiment uses an intra-MME switching procedure of the S1 interface as an example. The following is a specific description of fig. 8C. A detailed description of steps irrelevant to the present invention is omitted here.

In step 8c01, the UE attaches under the RN or TAU to the MME-UE, the RN may include the RN identifier in the initial UE message or uplink direct transmission message carrying the UE attach or TAU, and the MME-UE may know under which RN the UE is currently accessed in two ways, and map the RN directly through the RN identifier or through TA' attached by the UE.

In step 8C02, the source DeNB sends a handover request to the target MME-RN.

In step 8C03, the target MME-RN sends a handover request to the target DeNB.

Step 8C04, the target DeNB sends a handover request acknowledgement to the target MME-RN.

In step 8C05, the target MME-RN sends a handover command to the source DeNB.

In step 8C06, the source DeNB sends a handover command to the RN.

In step 8c07, the rn sends RRC connection reconfiguration complete to the target DeNB.

Step 8C08, the target DeNB sends a handover notification to the target MME-RN. If a location change of the RN is found, the centralized MME node (for uniformly recording the location of the RN) may be notified by the target DeNB or the target MME-RN or the HSS may be notified by the target MME-RN: the target DeNB may notify the centralized MME in two ways, step 8C08 and step 8C09, respectively; the target MME-RN can inform the centralized MME in two ways, namely, step 8C11 and step 8C12; the target MME-RN may inform the HSS through step 8C 12.

Step 8C08 to step 8C20 are the same as step 8a06 to step 8a18, and will not be described again here.

Application scenario two example four

Based on the above method, fig. 8D shows a flowchart of a second example of an application scenario for optimizing UE in paging mobile relay. The present embodiment uses an inter-MME handover procedure as an example. The following is a specific description of fig. 8D. A detailed description of steps irrelevant to the present invention is omitted here.

In step 8d01, the UE attaches under the RN or TAU to the MME-UE, the RN may include the RN identifier in the initial UE message or uplink direct transmission message carrying the UE attach or TAU, and the MME-UE may know under which RN the UE is currently accessed in two ways, and map the RN directly through the RN identifier or through TA' attached by the UE.

In step 8D02, the source DeNB sends a handover request to the source MME-RN.

In step 8D03, the source MME-RN sends a forward relocation request to the target MME-RN.

In step 8D04, the target MME-RN sends a handover request to the target DeNB.

Step 8D05, the target DeNB sends a handover request acknowledgement to the target MME-RN.

In step 8D06, the target MME-RN sends a forward relocation response to the source MME-RN.

In step 8D07, the target MME-RN sends a handover command to the source DeNB.

In step 8D08, the source DeNB sends a handover command to the RN.

In step 8d09, the rn sends RRC connection reconfiguration complete to the target DeNB.

In step 8D10, the target DeNB sends a handover notification to the target MME-RN. If a location change of the RN is found, the centralized MME node (for uniformly recording the location of the RN) may be notified by the target DeNB or the target MME-RN or the HSS may be notified by the target MME-RN: the target DeNB may notify the centralized MME in two ways, step 8D11 and step 8D12, respectively; the target MME-RN can inform the centralized MME in two ways, namely, step 8D14 and step 8D15; the target MME-RN may inform the HSS through step 8D 15.

Steps 8D11 to 8D23 are the same as steps 8a06 to 8a18, and will not be described again here.

Three examples of application scenarios one

Based on the above method, fig. 9 shows a flowchart of an example one of an application scenario of the UE under the paging mobile relay. The present embodiment uses an inter-MME handover procedure as an example. The following is a specific description of fig. 9. A detailed description of steps irrelevant to the present invention is omitted here.

In step 901, the ue initiates an attach or TAU request to the RN.

In step 902, the rn forwards an attach or TAU request to the target MME-UE. The RN may include an RN identifier in an initial UE message or an uplink direct transfer message carrying UE attachment or TAU, and the MME-UE may learn in two ways under which RN the UE is currently accessed, and map the RN directly through the RN identifier or through TA' to which the UE is attached.

In step 903, the target MME-UE sends TAU accept to the UE.

In step 904, the UE sends TAU complete to the target MME-UE.

In step 905, the mme-UE receives a downlink data notification for an idle UE sent by an SGW-UE (short for SGW to which the UE accesses), and needs to initiate paging to the UE under the RN. The MME-UE may obtain the location of the RN in three ways, 906, 908, or 910, respectively. The location information may be DeNB or TAI.

In step 906, the mme-UE initiates RN paging to all denbs along the RN through which the RN can pass according to the RN identification or TA'.

In step 907, the DeNB to which the RN accesses returns a paging response to the MME-UE, indicating that the location information of the RN may be a DeNB or a TAI.

In step 908, the mme-UE sends location control to all denbs along the RN through which the RN can pass according to the RN identification or TA'.

In step 909, the DeNB to which the RN accesses returns a location report to the MME-UE, indicating that the location information of the RN may be a DeNB or a TAI.

In step 910, the mme-UE sends a query location request to all denbs along the RN that can pass through according to the RN identifier or TA'.

In step 911, the DeNB to which the RN accesses returns a query location response to the MME-UE, indicating that the location information of the RN may be a DeNB or a TAI.

In step 912, the MME-UE sends a paging message to the DeNB in the location where the RN is located.

In step 913, the denb forwards the paging message to the RN.

Corresponding to the above method, the embodiment of the present invention further provides a network side device 100, which includes a receiving module 110, an operation module 120, and a sending module 130.

The receiving module 110 is configured to obtain new location information of the RN relay node;

the operation module 120 is configured to determine a paging range for paging the UE according to the obtained location information of the RN;

the sending module 130 is configured to initiate paging to the UE within the paging range by the MME to which the UE accesses.

As an embodiment of the network side device 100, the receiving module 110 is configured to obtain new location information of the RN, which includes any one of the following manners:

when the RN location is changed, the receiving module 110 receives new location information of the RN from the target DeNB or the target MME; and

the sending module 130 is configured to request current location information of the RN from all denbs associated with the RN, and thereafter, the receiving module 110 obtains new location information of the RN. As an embodiment of the network side device 100 described above, the new location information of the RN includes:

the DeNB, TAI or MME newly accessed by the RN.

As an embodiment of the network side device 100, the sending module 130 is configured to initiate paging to the UE within the paging range in any one of the following manners:

the sending module 130 is configured to send a paging request for paging the UE to the DeNB within the paging range; and

the sending module 130 is configured to map the new location information of the RN to an MME accessed by the RN, send a paging request to the MME accessed by the RN, and forward the paging request of the UE to a DeNB accessed by the RN by the MME accessed by the RN.

As an embodiment of the network side device 100 described above, it is apparent that in a specific network implementation, the network side device 100 includes, but is not limited to, the following devices: HSS home subscriber server, centralized MME or MME to which UE can access under RN.

The MME which can be accessed by the UE under the RN is the MME supporting the TA 'position area which serves the UE under the RN, and the TA' position area is the position area which serves the UE under the RN.

As an embodiment of the network side device 100, when the network side device 100 is an MME that can be accessed by an UE under an RN, the MME that can be accessed by the UE under the RN is an MME supporting a TA' location area served by the UE under the RN, and the receiving module 110 receives new location information of the RN from the target DeNB or the target MME further includes: the target DeNB or the target MME acquires the MME which can be accessed by the UE according to the TA' position area.

The method or the equipment provided by the invention can effectively reduce the paging range, avoid the waste of air interface resources, ensure that idle UE under RN can also rapidly and directionally page, and ensure that the paged UE can normally access service. In addition, the method or the device provided by the invention has little change to the existing system, does not influence the compatibility of the system, and is simple and efficient to realize.

Those skilled in the art will appreciate that the present invention may be directed to apparatus for performing one or more of the operations described herein. The device may be specially designed and constructed for the required purposes, or it may comprise a known device in a general purpose computer having a program stored therein that is selectively activated or reconfigured by the computer. Such a computer program may be stored in a device (e.g., a computer) readable medium or any type of medium suitable for storing electronic instructions and coupled to a bus, respectively, including, but not limited to, any type of disk including floppy disks, hard disks, optical disks, CD-ROMs, and magneto-optical disks, random Access Memories (RAMs), read-only memories (ROMs), electrically programmable ROMs, electrically erasable ROMs (EPROMs), electrically Erasable Programmable ROMs (EEPROMs), flash memory, magnetic or optical cards. A readable medium includes any mechanism for storing or transmitting information in a form readable by a device (e.g., a computer). For example, readable media includes Random Access Memory (RAM), read Only Memory (ROM), magnetic disk storage media, optical storage media, flash memory devices, signals propagating in an electrical, optical, acoustical or other form (e.g., carrier waves, infrared signals, digital signals), and so forth.

It will be understood by those within the art that each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing method to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing method, create means for implementing the functions specified in the block diagrams and/or block diagram block or blocks.

Those of skill in the art will appreciate that the various operations, methods, steps in the flow, acts, schemes, and alternatives discussed in the present invention may be alternated, altered, combined, or eliminated. Further, other steps, means, or steps in a process having various operations, methods, or procedures discussed herein may be alternated, altered, rearranged, disassembled, combined, or eliminated. Further, steps, measures, schemes in the prior art with various operations, methods, flows disclosed in the present invention may also be alternated, altered, rearranged, decomposed, combined, or deleted.

The foregoing is only a partial embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.

Claims

1. A method for paging a terminal under a mobile relay, comprising the steps of:

the method comprises the steps that a mobile management entity accessed by UE acquires new position information of a relay node, wherein the new position information of the relay node is received from a target anchor base station, or is acquired from a core network node after being sent to the core network node by the target anchor base station or the target mobile management entity accessed by the relay node, or is requested from all anchor base stations through which the relay node can pass;

the mobile management entity accessed by the UE determines a paging range of paging the UE according to the new position information of the relay node;

and the mobile management entity accessed by the UE initiates paging to the UE in the paging range.

2. The method of claim 1, wherein the new location information of the relay node comprises:

and the relay node is newly accessed to an anchor point base station, a TAI or a mobile management entity.

3. The method of claim 1, wherein the mobile management entity accessed by the UE initiating paging of the UE within the paging range comprises any one of:

the mobile management entity accessed by the UE sends a paging request for paging the UE to an anchor point base station in the paging range; and

the mobile management entity accessed by the UE maps to the mobile management entity accessed by the relay node according to the new position information of the relay node, sends a paging request to the mobile management entity accessed by the relay node, and forwards the paging request of the UE to the anchor point base station accessed by the relay node by the mobile management entity accessed by the relay node.

4. The method of claim 1, wherein the mobile management entity accessed by the UE obtaining new location information for the relay node from the core network node comprises:

and the mobile management entity accessed by the UE acquires new position information of the relay node through an identifier of the relay node accessed by the UE or a TA 'position area index, wherein the TA' position area is a position area serving the UE under the relay node.

5. A method for paging a terminal under a mobile relay, comprising the steps of:

the method comprises the steps that a core network node obtains new position information of a relay node, wherein the new position information of the relay node is received from a target anchor base station or a target mobile management entity accessed by the relay node or is requested from all anchor base stations which can be passed by the relay node;

the core network node sends the new position information of the relay node to a mobile management entity accessed by the UE, so that the mobile management entity determines the paging range of paging the UE according to the new position information of the relay node.

6. The method of claim 5, wherein the new location information of the relay node comprises:

7. The method of claim 5, wherein a mobility management entity accessible to the UE is known by the target anchor base station or target mobility management entity from a TA 'location area, wherein the TA' location area is a location area under the relay node that serves the UE.

8. A network side device is characterized by comprising a receiving module, an operation module and a sending module,

the receiving module is configured to obtain new location information of the relay node, where the new location information of the relay node is received from a target anchor base station, or is obtained from a core network node after a target mobility management entity accessed by the target anchor base station or the relay node sends the new location information to the core network node, or is requested from all anchor base stations that can be passed by the relay node;

the operation module is used for determining a paging range of paging UE according to the acquired new position information of the relay node;

and the sending module is used for initiating paging to the UE within the paging range by the mobile management entity accessed by the UE.

9. The network-side device of claim 8, wherein the new location information of the relay node comprises:

10. The network side device according to claim 8, wherein the sending module is specifically configured to perform any one of the following manners:

sending a paging request for paging the UE to an anchor point base station in the paging range; and

and according to the new position information of the relay node, mapping the new position information to a mobile management entity accessed by the relay node, sending a paging request to the mobile management entity accessed by the relay node, and forwarding the paging request of the UE to an anchor point base station accessed by the relay node by the mobile management entity accessed by the relay node.

11. The network side device according to claim 8, wherein the receiving module is specifically configured to:

and acquiring new position information of the relay node through an identifier of the relay node accessed by the UE or a TA 'position area index, wherein the TA' position area is a position area serving the UE under the relay node.

12. A network side device, comprising: a receiving module and a transmitting module,

the receiving module is used for acquiring new position information of the relay node, wherein the new position information of the relay node is received from a target anchor base station or a target mobile management entity accessed by the relay node or is requested to all anchor base stations which can be passed by the relay node;

the sending module is configured to send new location information of a relay node to a mobility management entity to which the UE accesses, so that the mobility management entity determines a paging range for paging the UE according to the new location information of the relay node.

13. The network-side device of claim 12, wherein the new location information of the relay node comprises:

14. The network side device of claim 12, wherein a mobility management entity that the UE can access is known by the target anchor base station or the target mobility management entity according to a TA 'location area, where the TA' location area is a location area that serves the UE under the relay node.

15. A network side device, comprising: a processor and a memory;

the memory having a computer program stored therein, the computer program being provided to the processor for execution by the processor to implement the method of any of claims 1-4.

16. A network side device, comprising: a processor and a memory;

the memory having stored therein a computer program which is provided to the processor for execution by the processor to implement the method of any of claims 5-7.