WO2010003318A1

WO2010003318A1 - Embms transmission method, system and apparatus

Info

Publication number: WO2010003318A1
Application number: PCT/CN2009/000783
Authority: WO
Inventors: 赵国胜; 习建德
Original assignee: 大唐移动通信设备有限公司
Priority date: 2008-07-10
Filing date: 2009-07-09
Publication date: 2010-01-14
Also published as: KR20110052609A; CN101626545A; MX2011000387A; KR101297334B1

Abstract

An enhanced multimedia broadcast multicast service transmission EMBMS method, system and apparatus are provided for improving the EMBMS receiving quality of user terminal. The provided EMBMS receiving method is applied to the process that a user terminal in the idle status uses the resource in the multi-cell point-to-multipoint mode to receive EMBMS in the multicast broadcast single frequency network, and the method includes: the user terminal sends an EMBMS request message to network side; said user terminal receives the configuration information of the resource in the single cell point-to-multipoint mode which is established for transmitting the EMBMS by the network side; said user terminal acquires, according to said configuration information, the resource in the single cell point-to-multipoint mode which is allocated for transmitting said EMBMS by said network side, and receives said EMBMS using the resource. The solution is provided for transmitting and receiving EMBMS in the multicast broadcast single frequency network, improving EMBMS receiving quality, and ensuring the continuity of the EMBMS reception.

Description

Method, system and device for transmitting EMBMS

The present invention relates to the field of communications technologies, and in particular, to a method, system, and apparatus for transmitting an enhanced multimedia broadcast multicast service (EMBMS). Background technique

The Long Term Evolution (LTE) standard is an evolution standard based on the Universal Terrestrial Radio Access Network (UTRAN) developed by the 3GPP organization. It provides EMBMS capable of supporting higher-speed multimedia data transmission and more. Good service quality, its architecture is shown in Figure 1. The SGmb interface and SGi-mb interface described in Figure 1 are enhanced broadcast/multicast service control (eBM-SC) nodes and network. An interface between the MBMS (Multimedia Broadcast Multicast Service) node MBMS2, wherein the SGmb interface provides a control plane function, and the SGi-mb interface provides a user plane function. The eBM-SC is an entry for the MBMS service provider to authorize and initiate services, as well as to store some service parameter information and to send the service according to the scheduled time. On the access network side, the MBMS2 service plane node provides the EMTMS data required by the user terminal (UE) for the EUTRAN node (ie, the Enhanced Node B) through the M1 interface, and the control plane node MBMS1 passes through the M3 interface. The ENB provides business-related control plane information.

In EUTRAN, in order to further improve the one-to-many (PTM) transmission characteristics of EMBMS and improve the efficiency of air interface resources as much as possible, LTE introduces a multicast broadcast single frequency network (MBSFN, Multicast/Broadcast) in the access network. Single Frequency Network) This network with new transmission characteristics, MBSFN enhances the downlink transmission processing gain of the EMBMS, for example, by supporting downlink macro diversity at the inter-cell edge in the MBSFN domain. Throughput and user experience.

Referring to Figure 2, regarding the related technical characteristics of MBSFN, the following description is given in the 3GPP TS36.300 protocol:

MBSFN Synchronization Area: The area where the internal ENB can acquire synchronization and perform MBSFN transmission. The MBSFN sync area can support one or more MBSFN areas. At the specified frequency level, an ENB belongs to only one MBSFN synchronization area. The definition of the MBSFN synchronization area is independent of the definition of the EMBMS area.

MBSFN Transmission: A Simulcast transmission technique that is implemented by simultaneously transmitting the same signal waveform in multiple cells. The MBSFN transmission of multiple cells in the MBSFN area can be regarded by a UE as a single transmission from a "large area".

MBSFN Area: MBSFN area contains a group of cells in a MBSFN synchronization area in the network. The cells in the MBSFN synchronization area may constitute a plurality of MBSFN areas, and each MBSFN area is distinguished according to the difference between the transmission content of the bearer and the set of participating cells.

MBSFN Area Transmitting and Advertising Cell (MBSFN Area Transmitting and Advertising Cell): Referred to as TA[:, is a type of cell in the MBSFN area, the cell participates in both the MBSFN transmission and the announcement of the MBSFN transmission availability in the cell.

The MBSFN Area Transmitting-Only Cell (MBSFN Area Transmitting-Only Cell) is a type of cell in the MBSFN area. The cell only participates in the MBSFN transmission and does not participate in the announcement of the MBSFN transmission availability in the cell. The use of such cells is for further study.

MBSFN Area Reserved Cell (MBSFN Area Reserved Cell): Referred to as a reserved cell, it is a cell in the MBSFN area. The cell does not participate in MBSFN transmission. The cell may allow transmission of other services, but must be allocated to the radio resources allocated for MB SFN transmission. Limit the transmission power of the corresponding service.

In addition, the cell supporting EMBMS has the following two divisions in carrier capacity:

EMBMS-dedicated Cell: A cell that only provides MBMS service support. MBMS/Unicast-mixed Cell: A cell that supports both point-to-multipoint transmission of MBMS services and point-to-point transmission of unicast (Unicast) services. The carrier in which the cell is located is also referred to as an MBMS/Unicast hybrid carrier (or a shared carrier).

Due to the improvement of the relevant physical layer and the transport layer in the LTE system, the network layer naturally has new features and requirements. In the scenario of deploying a single frequency network (MBSFN), the cells in the MBSFN domain are strictly synchronized (including node synchronization, Content synchronization, and synchronization of the air interface), so the UE at the cell boundary can effectively acquire the downlink signal energy combining gain, which is basically equivalent to the gain obtained by the High Speed Downlink Packet Access (HSDPA) technology in the dedicated link. And because of the "synchronization" feature between the cells in the MBSFN domain, the interference between the EMBMS bearer resources is significantly reduced. Therefore, the EMBMS signal quality at the inter-cell boundary in the MBSFN domain is greatly improved.

Referring to FIG. 3, when a UE in an idle state crosses an MBSFN boundary from an MBSFN area, the UE needs to undergo a transition from a TAC to an MBSFN border cell (protection band), since the MBSFN border cell may be composed of a TOC and a Reserved cell. The EMBMS that the UE is receiving has a corresponding restriction on the guard band, that is, the EMBMS is not transmitted on the Reserved cell, and the TOC transmits the EMBMS with limited power and does not provide corresponding control plane information.

For UEs in the MBSFN borderband consisting of TOC or Reserved cells, normal reception of EMBMS may be threatened. This is because the MBMS Traffic Channel (MTCH, MBMS Traffic Channel) of the cell in the MBSFN borderband is not transmitted or power-limited to transmit the EMBMS, so that the MBSFN mode service signal combining gain decreases, and may cause the UE to fail. The EMBMS information is normally demodulated. Further, once the UE moves outside the MBSFN domain, it will enter a cell outside the coverage of the MBSFN, and such a cell does not provide EMBMS transmission. At this time, the Idle state UE that receives the EMBMS must send a request or indication to the network in order to implement the continuation (normal) reception of the EMBMS, so that the network establishes the corresponding EMBMS transmission resource (including the transmission resource) in the cell where the UE is currently located. And radio resources), providing EMBMS support for Idle state UEs entering the cell.

However, the existing TS36.300 standard only describes the implementation of the cell reselection procedure for the Idle state UE that is receiving the EMBMS, and details about the continuity of the EMBMS reception, such as: EMBMS The receiving characteristic information, the UE may move out of the MBSFN domain, may cause a transmission type conversion, etc., and no clear technical solution is given.

In summary, the prior art does not provide a technical solution for continuously receiving the EMBMS when the Idle state UE receiving the EMBMS traverses the MBSFN boundary, that is, the prior art cannot guarantee that the Idle state UE can continuously receive the BMBMS, thereby causing the EMBMS to receive. Poor quality. Summary of the invention

Embodiments of the present invention provide a method, system, and apparatus for transmitting an EMBMS to improve reception quality of an EMBMS.

The method for receiving an EMBMS according to an embodiment of the present invention is applicable to a process in which a user terminal in an idle state receives an EMBMS by using a multi-cell point-to-multipoint mode resource in a multicast broadcast single frequency network, where the method includes:

The user terminal sends an EMBMS request message to the network side;

The user terminal receives a configuration of a single-cell point-to-multipoint mode resource established by the network side for transmitting the EMBMS;

And the user terminal learns, according to the configuration information, a resource of the multi-point mode when the network side is configured to transmit the single cell point allocated by the EMBMS, and uses the resource to receive the EMBMS.

A method for transmitting an EMBMS according to an embodiment of the present invention is applicable to a method for transmitting an EMBMS to a user terminal in an idle state in a multicast broadcast single frequency network by using a multi-cell point-to-multipoint mode resource, where the method includes:

The network side receives the EMBMS request message sent by the user terminal, and establishes a resource of the single cell point-to-multipoint mode for transmitting the EMBMS according to the request message, and sends the configuration information of the established single-cell point-to-multipoint mode resource. Giving the user terminal;

The network side adopts a single-cell point-to-multipoint mode, and uses the established single-cell point-to-multipoint mode resource to transmit the EMBMS.

A user terminal is provided for receiving an enhanced multimedia broadcast multicast service EMBMS, where the user terminal includes: An EMBMS requesting unit, configured to send an EMBMS request message to the network side in a process of receiving an EMBMS by using a multi-cell point-to-multipoint mode resource allocated by the network side;

a configuration information receiving unit, configured to receive configuration information of a resource in a single-cell point-to-multipoint mode established by the network side for transmitting the EMBMS;

An EMBMS receiving unit, configured to learn, according to the configuration information, a resource of the single-cell point-to-multipoint mode allocated by the network side for transmitting the EMBMS, and use the resource to receive the EMBMS

The present invention provides a base station for transmitting an enhanced multimedia broadcast multicast service EMBMS, where the base station includes:

An EMBMS resource establishing unit, configured to receive an EMBMS request message sent by the user equipment, and establish a single cell point for transmitting the EMBMS according to the request message, in the process of transmitting the EMBMS to the user terminal by using the multi-cell point-to-multipoint mode resource For the resources of the multi-point mode, the configuration information of the established single-cell point-to-multipoint mode resource is sent to the user terminal;

The EMBMS transmitting unit is configured to use the single-cell point-to-multipoint mode to transmit the EMBMS by using the established single-cell point-to-multipoint mode resource.

A communication system is provided for transmitting an enhanced multimedia broadcast multicast service EMBMS, and the system includes:

a user terminal, configured to send an EMBMS request message to the base station in a process of receiving a EMBMS by using a multi-cell point-to-multipoint mode resource allocated by a base station, and receiving a single-cell point-to-multipoint mode established by the base station to transmit an EMBMS The configuration information of the resource, and the resource of the single-cell point-to-multipoint mode allocated by the network side for transmitting the EMBMS is learned according to the configuration information; and the EMBMS is received by using the resource;

a base station, configured to receive an EMBMS request message sent by the user equipment, and establish a single-cell point-to-multipoint for transmitting the EMBMS according to the request message, in the process of transmitting the EMBMS to the user terminal by using the multi-cell point-to-multipoint mode resource a mode resource, and transmitting configuration information of the established single-cell point-to-multipoint mode resource to the user terminal; and adopting a single-cell point-to-multipoint mode, using the established single-cell point-to-multipoint mode resource direction The user terminal transmits the EMBMS. In the embodiment of the present invention, the user terminal is configured to send an EMBMS request message to the network side in the process of receiving the EMBMS in the multicast broadcast single frequency network, where the user terminal receives the EMBMS for transmitting the EMBMS. According to the configuration information, the user terminal learns, according to the configuration information, a resource of a single-cell point-to-multipoint mode allocated by the network side to transmit the EMBMS, and uses the resource. Receiving the EMBMS, so that the Idle state UE receiving the EMBMS can continuously receive the EMBMS, improving the reception quality of the EMBMS. DRAWINGS

FIG. 1 is a schematic diagram of an architecture of an EMBMS in a System Architecture Evolution (SAE) system;

2 is a schematic diagram of a cell in an MBSFN area in an EMBMS system;

Figure 3 is a schematic diagram of the boundary of the MBSFN area;

4 is a schematic flowchart of a method for transmitting an EMBMS according to an embodiment of the present invention; and FIG. 5 is a schematic diagram of UE receiving characteristics in a TOC;

FIG. 6 is a schematic structural diagram of a communication system according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of an ENB according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a UE according to an embodiment of the present disclosure. detailed description

The embodiment of the invention provides a method, a system and a device for transmitting an EMBMS, which are applied to a user terminal in an idle state in a process of receiving an EMBMS by using a multi-cell point-to-multipoint mode resource in a multicast broadcast single frequency network. To improve the reception quality of EMBMS.

Based on the characteristics of the MBSFN area, the multi-cell energy combining feature of the MBSFN and the characteristics of the MBSFN domain boundary cell type (TOC or Reserved cell), it can be found that the UE receiving the Idle state of the EMBMS is from the center of the MBSFN area shown in FIG. During the process of moving the area (the TAC coverage area) to the outside, it is possible to enter the normal cell where the EMBMS is not provided. This is A basic scenario on an EMBMS/Unicast hybrid carrier (or shared carrier).

In the shared carrier scenario, for the continuity requirement when the UE receiving the EMBMS traverses the MBSFN boundary outwards, transforming the EMBMS transmission mode is a simple and effective solution, for example: multi-cell point-to-multipoint (MC-PTM, Multi-Cell Point To Multi-point mode is converted to Single-Cell Point To Multi-point (SC-PTM) mode, which avoids the use of MC-PTM mode in the MBSFN domain. The resource, in the target cell, uses the newly configured SC-PTM mode resource to provide a corresponding EMBMS for the UE moving to the cell, implements continuous reception of the EMBMS, and improves the EMBMS reception quality of the UE.

The technical solutions provided in the embodiments of the present invention are all based on the EMBMS transmission mode conversion technical solution, that is, the transition from the MC-PTM mode to the SC-PTM mode, and the radio resources occupied by the EMBMS in the MBSFN area (MC) -PTM mode transmission resources) Different resources (SC-PTM mode transmission resources), achieve resource orthogonality, suppress inter-cell interference, and then use SC-PTM link control technology (eg: adaptive modulation coding ( AMC (Adaptive Modulation and Coding) technology) to ensure the reception performance of EMBMS data, as well as business continuity.

Referring to FIG. 4, a method for transmitting an EMBMS according to an embodiment of the present invention generally includes the following steps:

5401. The UE sends an EMBMS request message to the ENB in the process of the UE receiving the EMBMS by using the resource of the MC-PTM mode allocated by the ENB, and the ENB establishes an SC-PTM mode resource for the EMMMS according to the EMBMS request message, and the resource is used. The configuration information is notified to the UE.

5402. The ENB adopts a single-cell point-to-multipoint mode, and transmits the EMBMS to the UE by using the newly-created SC-PTM mode resource.

5403. The UE learns, according to the configuration information of the resource in the SC-PTM mode, that the ENB is a resource of the SC-PTM mode newly created by transmitting the EMBMS, and receives the EMBMS transmitted by the ENB by using the newly-created SC-PTM mode resource.

The embodiment of the present invention can avoid the use of the MC-PTM mode in the MBSFN domain by using the newly generated SC-PTM mode resource to transmit the EMBMS by converting from the MC-PTM mode to the SC-PTM mode. The resource, in the target cell, uses the newly configured SC-PTM transmission resource to provide a corresponding EMBMS for the mobile UE to implement continuous reception of the EMBMS. It can be seen that the triggering mode of the MC-PTM mode to the SC-PTM mode and the triggering time are the key points. For the key technology, the following specific technical solutions are given in the embodiment of the present invention.

First, the triggering mechanism of the UE autonomous mode switching provided by the embodiment of the present invention is provided, which specifically includes the following schemes A and B.

Solution A. Trigger based on MBSFN global domain:

For the initial stage of the network deployment, the MTCH reception quality of the UE in the TAC may not be high, and the EMBMS received by the UE may not meet the demand. For example, for the frequency selective fading scenario, the EMBMS received by the UE may not meet the requirement. Therefore, in this case, the transition from the MC-PTM mode to the SC-PTM mode is not only required at the MBSFN boundary, so the embodiment is not limited to the MBSFN border cell, and the EMBMS receiving quality in the MBSFN domain drops to a preset threshold. (The TAC, the TOC, or the Reserved cell) The UE initiates the conversion of the EMBMS transmission mode based on the EMBMS reception quality of the measurement. The specific process includes: Step 1: The UE receives the quality of the EMBMS (eg, using the service channel) The interpolation pilot performs measurement and decision. If the measured value is lower than the set threshold, the UE initiates a request to access the network in the current cell, that is, a RRC Connection Request.

Step 2: The UE then resends the EMBMS Service Request to the ENB of the network side through the established RRC (Radio Resource Control) connection.

The information contained in the EMBMS Service Request includes: The EMBMS reception quality of the UE is degraded at this time, and the requesting network side creates a resource of the SC-PTM mode for transmitting the EMBMS, and completes the conversion of the MC-PTM mode to the SC-PTM mode.

Step 3: After receiving the EMBMS Service Request message sent by the UE, the ENB on the network side immediately establishes corresponding SC-PTM mode resources (including transmission resources and radio resources) for the EMBMS requested by the UE, and broadcasts through dedicated signaling or cell. The configuration information of the newly created SC-PTM mode resource is advertised to the UE, and the ENB of the network side joins the EMBMS multicast group corresponding to the EMBMS requested by the UE. At this point, the UE can continue to receive the EMBMS that the ENB transmits in the SC-PTM mode on the newly configured resources.

Scheme B, Trigger based on MBSFN domain boundary:

For a mature network, its MBSFN domain has undergone a certain period of operational tempering, the network configuration is optimized, and the MB SFN merge performance of EMBMS data is guaranteed by the optimized wireless layer configuration. In the TSF inside the MBSFN domain, the UE The EMBMS reception quality is stable. At this time, it is not necessary to perform UE EMBMS reception quality measurement on all types of cells on the MBSFN. Moreover, the measurement of too frequent a long time is not conducive to the power saving of the UE and needs to be overcome.

Therefore, it is preferable to limit the UE's EMBMS reception quality measurement process to the UE's upcoming exit from the MBSFN area. The specific solution includes: indicating, by the network side, the boundary topology information of the MBSFN domain, for example, the MBSFN type information of the cell may be indicated in the system broadcast information of the cell (ie, indicating whether the current cell of the UE is TAC, TOC, or Reserved The cell is configured to facilitate the measurement of the reception quality of the EMBMS after the UE enters the MBSFN boundary. When the transition condition of the MC-PTM mode to the SC-PTM mode (ie, the EMBMS reception quality is lower than the preset threshold) is established, the UE The ENB sends the same EMBMS Service Request message as the EMBMS Service Request message described in Scheme A, so that the network side can perform the corresponding MC-PTM mode to SC-PTM mode conversion. In order to transmit the EMBMS, the new SC-PTM mode is configured. The resource is thus served for the UE in the Idle state to continue receiving the EMBMS, ensuring the reception continuity of the EMBMS.

In summary, the common features of Option A and Option B include:

1. The UE sends an EMBMS Service Request message to the network, which depends on the measurement result of the EMBMS.

2. The subsequent triggering of the network to switch from the MC-PTM mode to the SC-PTM mode is performed directly. Except for the UE to initiate the EMBMS Service Request message, there are no other conditions.

The trigger mechanism of the MBSFN boundary indication mode conversion provided by the embodiment of the present invention is given below. Different from the triggering mechanism of the UE autonomous mode switching provided by the embodiment of the present invention, the core method of the MBSFN boundary-indicating mode conversion triggering mechanism includes: Step 1: The network side indicates the boundary topology information of the MBSFN domain for the UE, for example, the MBSFN type information of the border cell of the MBSF domain is indicated in the system broadcast information of the cell, that is, the information of the cell is a TAC, TOC or Reserved cell.

Step 2. When the UE detects that it has entered the MBSFN border cell, it sends a request for accessing the network (RRC Connection Request) in the current cell.

Step 3: The UE initiates an EMBMS Service Request message to the network side through the RRC connection. Step 4: After receiving the EMBMS Service Request message from the UE, the ENB on the network side can perform the following scheme C or scheme D based on different design goals:

Solution C and ENB immediately perform the conversion from MC-PTM mode to SC-PTM mode: When the ENB receives the EMBMS Service Request message of the UE, it determines that the continuity of the UE receiving the EMBMS is about to be threatened. For example, the boundary of the MBSFN area is configured as one. When the Layer-reserved type border cell is not transmitted, the EMBMS does not transmit the EMBMS data. Therefore, the receiving quality of the EMBMS drops significantly in the Reserved cell. After the UE enters the border cell of the MBSFN, it is highly probable that the Unicast cell does not provide the corresponding EMBMS. This tendency is more pronounced for UEs moving at higher speeds in a straight line.

At this time, the ENB immediately converts the EMBMS transmission mode from the MC-PTM mode to the SC-PTM mode, and configures the new SC-PTM mode resources for the UE to continue to provide the EMBMS required by the UE, ensuring that the EMBMS is at the MBSFN boundary. Receive continuity.

The feature of the solution C is: after the UE enters the MBSFN border cell and detects the boundary cell type indication sent by the network side, the UE immediately sends an EMBMS Service Request message to the network side; and after receiving the EMBMS Service Request message sent by the UE, the network side receives the EMBMS Service Request message. Immediately implement the MC-PTM mode to SC-PTM mode conversion and configure new resources for EMBMS transmission in SC-PTM mode. At the same time, the ENB notifies the UE of the configuration information of the resources in the new SC-PTM mode by the cell system broadcast or using dedicated signaling, so that the UE continues to receive the EMBMS from the new resource.

Scheme D, ENB performs MC-PTM mode to SC-PTM mode conversion based on its own decision: Unlike scheme C, if the boundary of MBSFN is multiple (multilayer) and the type of border cell is TOC, the signal strength of EMBMS is attenuated. Is relatively slow, enough to continue to enter the UE Provide the corresponding EMBMS. At this time, the conversion process of the MC-PTM mode to the SC-PTM mode based on the UE's request does not have to be started immediately.

In the boundary cell, if the EMBMS signal quality is good enough, the MC-PTM mode to SC-PTM mode conversion will be implemented immediately, which will waste the signal combining gain of the MBSFN mode, and will occupy new resources prematurely (including transmission resources). And wireless resources), reducing the efficiency of the use of the air interface. Therefore, after receiving the EMBMS Service Request message of the UE, the network side may initiate measurement control for the UE, instruct the UE to perform a predefined measurement, that is, notify the UE to measure the current EMBMS reception quality, and receive the measurement of the EMBMS reception quality of the UE. Results feedback. Until the ENB considers that the UE's EMBMS reception quality falls below the set guaranteed threshold, the ENB initiates the MC-PTM mode to SC-PTM mode conversion process for the UE and configures new resources for the EMBMS in the SC-PTM mode. Launch. At the same time, the ENB broadcasts the new resource configuration information to the UE through the cell system broadcast or using dedicated signaling, so that the UE continues to receive the EMBMS from the new resource.

The triggering mechanism of scenario C and scenario D has a common feature different from that of scenario A and scenario B:

The UE sends an EMBMS Service Request message to the network side only based on the MBSFN-based boundary discovery result; the triggering time of the subsequent MC-PTM mode transition to the SC-PTM mode on the network side is based on the ENB decision.

The following describes the criteria for determining the deterioration of the EMBMS reception quality of the UE in the embodiment of the present invention, that is, the condition for the MC-PTM mode to be converted to the SC-PTM mode.

As shown in Figure 5, the TOC only provides the transmission of EMBMS, but does not provide the transmission of relevant control information. Therefore, from the perspective of receiving the UE, since the corresponding control information of the traffic channel of the EMBMS needs to be received from the adjacent TAC, the reception quality of the control channel of the EMBMS will appear with the external migration of the UE relative to the traffic channel of the EMBMS. A more pronounced decline.

Since the quality degradation of the EMBMS control channel is more obvious with the out-of-band shift of the UE, the estimation of the EMBMS reception quality of the UE cannot be based only on the traffic channel of the EMBMS, that is, the EMBMS control channel is satisfied if the EMBMS received energy index requirement is met. The reception quality may have dropped to an unavailable state. At this time, once the EMBMS's traffic channel has a new scheduling, the UE will suddenly be unable to receive the EMBMS due to the lack of indication of control information. The continuity of EMBMS has a very bad effect.

Therefore, the embodiment of the present invention proposes that the UE's EMBMS reception quality decision should be based on the measurement of the comprehensive performance of the EMBMS's traffic channel and the corresponding control channel. As long as one of them is lower than the set threshold, the UE's EMBMS reception quality is considered to be deteriorated. When the set mode conversion trigger timing is reached, the MC-PTM mode should be converted to the SC-PTM mode.

Referring to FIG. 6, a communication system provided by an embodiment of the present invention includes: an evolved base station 61 and a user terminal 62.

The evolved base station 61 is configured to receive an EMBMS request message sent by the user terminal 62 in the process of transmitting the EMBMS to the user terminal 62 by using the multi-cell point-to-multipoint mode resource, and send the EMBMS according to the request message. Establishing a single-cell point-to-multipoint mode resource, and notifying the user terminal 62 of the resource configuration information; and transmitting the EMBMS to the audible user terminal 62 by using the resource in a single-cell point-to-multipoint mode „

The user terminal 62 is configured to send an EMBMS request message to the evolved base station 61, and receive the evolved base station 61 as a transmission, in the process of receiving the EMBMS by using the multi-cell point-to-multipoint mode resource allocated by the evolved base station 61. The configuration information of the resources of the single-cell point-to-multipoint mode established by the EMBMS, and the learned base station 61 is configured to transmit the resources of the single-cell point-to-multipoint mode newly created by the EMBMS according to the utterance configuration information, and utilize the single cell The resources of the point-to-multipoint mode receive the EMBMS transmitted by the evolved base station 61.

Referring to FIG. 7, an ENB 70 provided by an embodiment of the present invention includes:

The EMBMS resource establishing unit 701 is configured to: when transmitting the EMBMS to the user terminal by using the multi-cell point-to-multipoint mode resource, receive an EMBMS request message sent by the user terminal, and establish a single cell for transmitting the EMBMS according to the request message. The point-to-multipoint mode resource is configured, and the configured configuration information of the single-cell point-to-multipoint mode resource is sent to the user terminal.

The EMBMS sends an It 702, which is used to transmit the EMBMS using the established single-cell point-to-multipoint mode resource using a single-cell point-to-multipoint mode.

Referring to FIG. 8, a UE 80 according to an embodiment of the present invention includes:

The EMBMS requesting unit 801 is configured to use the multi-cell point-to-multipoint mode allocated by the network side. During the process of receiving the EMBMS, the resource sends an EMBMS request message to the network side.

The configuration information receiving unit 802 is configured to receive configuration information of a resource in a single-cell point-to-multipoint mode established by the network side for transmitting the EMBMS.

The EMBMS receiving unit 803 is configured to learn, according to the configuration information, a resource of the single cell point-to-multipoint mode allocated by the network side to transmit the EMBMS, and receive the resource by using the resource

EMBMS.

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of the inventions

Claims

Rights request

A method for receiving an enhanced multimedia broadcast multicast service EMBMS, which is applied to a user terminal in an idle state in a process of receiving an EMBMS by using a multi-cell point-to-multipoint mode resource in a multicast broadcast single frequency network, In that, the method includes:

The user terminal sends an EMBMS request message to the network side;

Receiving, by the user equipment, configuration information of a resource of a single-cell point-to-multipoint mode established by the network side for transmitting the EMBMS;

And the user terminal learns, according to the configuration information, a resource of the single cell point-to-multipoint mode allocated by the network side to transmit the EMBMS, and uses the resource to receive the EMBMS.

The method according to claim 1, wherein the user terminal sends the EMBMS request message to the network side when determining that the EMBMS is received and the tributor is lower than a preset threshold.

The method according to claim 2, wherein the user terminal determines that the reception quality of the EMBMS is lower than a preset threshold by detecting the reception quality of the EMBMS.

The method according to claim 3, wherein the method further comprises: the user terminal receiving multicast broadcast single frequency network type information of a cell in which the user is currently located from the network side; The terminal detects the receiving quality of the EMBMS when the terminal determines that it is in the boundary cell of the multicast broadcast single frequency network by using the multicast broadcast single frequency network type information.

The method according to claim 3 or 4, wherein the user terminal determines the reception quality of the EMBMS by detecting a traffic channel and a control channel of the EMBMS.

The method according to claim 1, wherein the method further comprises: the user terminal receiving multicast broadcast single frequency network type information of a cell in which the user is currently located from the network side; When it is determined by the multicast broadcast single frequency network type information that it is in a border cell of the multicast broadcast single frequency network, the EMBMS request message is sent to the network side.

The method according to claim 1 or 6, wherein, after the user terminal sends the EMBMS request message, and before receiving the configuration information, the method further includes: The user terminal receives an indication sent by the network side to detect a reception quality of the EMBMS, and detects a reception quality of the EMBMS according to the indication;

The user terminal notifies the network side of the detection result of the reception quality of the EMBMS.

A method for transmitting an enhanced multimedia broadcast multicast service EMBMS, which is applied to a process of transmitting an EMBMS to a user terminal in an idle state in a multicast broadcast single frequency network using a multi-cell point-to-multipoint mode resource, In that, the method includes:

The network side receives the EMBMS request message sent by the user terminal, and establishes a resource of the single cell point-to-multipoint mode for transmitting the EMBMS according to the request message, and configures the configuration information of the single-cell point-to-multipoint mode resource. Sent to the user terminal;

The method according to claim 8, wherein before the network side receives the EMBMS request message sent by the user terminal, the method further includes: the network side is currently located by the user terminal The multicast broadcast single frequency network type information of the cell is notified to the user terminal.

The method according to claim 8, wherein the network side notifies the user terminal of the configuration information of the established single-cell point-to-multipoint mode resource by using a dedicated signaling or a cell broadcast.

The method according to claim 8, wherein, after the network side receives the EMBMS request message sent by the user terminal, the method further includes:

The network side instructs the user terminal to detect the reception quality of the EMBMS; the network side receives the detection result of the reception quality of the EMBMS returned by the user terminal, and determines the reception quality of the EMBMS according to the detection result. When the preset threshold is lower, a resource of a single-cell point-to-multipoint mode is established for transmitting the EMBMS.

12. The method of claim 11, wherein the received quality of the EMBMS comprises a reception quality of a traffic channel and/or a control channel of the EMBMS;

The network side determines that the reception quality of the traffic channel and/or the control channel of the EMBMS is low When the threshold is preset, a resource of a single-cell point-to-multipoint mode is established for transmitting the EMBMS.

A user terminal, configured to receive an enhanced multimedia broadcast multicast service EMBMS, wherein the user terminal comprises:

An EMBMS requesting unit, configured to send an EMBMS request message to the network side in the process of receiving the EMBMS by using the multi-cell point-to-multipoint mode resource allocated by the network side;

And an EMBMS receiving unit, configured to learn, according to the configuration information, a resource of the single-cell point-to-multipoint mode allocated by the network side for transmitting the EMBMS, and use the resource to receive the EMBMS.

A base station, configured to transmit an enhanced multimedia broadcast multicast service EMBMS, wherein the base station comprises:

A communication system for transmitting an enhanced multimedia broadcast multicast service EMBMS, wherein the system comprises:

a base station, configured to receive an EMBMS request message sent by the user terminal in the process of transmitting the EMBMS to the user terminal by using the multi-cell point-to-multipoint mode resource, and send the request message according to the request message Generating the EMBMS to establish a single-cell point-to-multipoint mode resource, and transmitting the configured configuration information of the single-cell point-to-multipoint mode resource to the user terminal; and adopting a single-cell point-to-multipoint mode, using the established The resources of the single-cell point-to-multipoint mode transmit the EMBMS to the user terminal.