CN105491535A - Data transmission method and equipment - Google Patents
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- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
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Abstract
The invention discloses a data transmission method. The method comprises the following step: when a multi-cell/multicast coordination entity (MCE) confirms that a physical multicast channel does not exist, forming a multimedia broadcast multicast service (MBMS) pseudo session, wherein the MBMS pseudo session is used for an evolved NodeB (eNB) to perform data transmission . The invention also discloses another data transmission method, the eNB and the MCE.
Description
Technical Field
The present invention relates to signal processing technology in mobile communication, and in particular, to a data transmission method and apparatus.
Background
With the development of mobile internet and large-screen mobile terminals, more and more mobile terminal users choose to perform multimedia information service processing on the mobile terminal side, such as: video conferencing, live events, online education, etc. Compared with the common data service, the multimedia information service has the characteristics of high bandwidth occupation, long duration, sensitive time delay requirement, relatively fixed transmission content and the like. In order to efficiently utilize spectrum resources, the third generation partnership project (3 GPP) organization proposes a Multimedia Broadcast and Multicast Service (MBMS), which is a point-to-multipoint service, that is: the data source is one, and the data receiving targets are multiple; the MBMS can realize the sharing of network resources and improve the utilization rate of frequency domain resources of the wireless access network.
In a Long Term Evolution (LTE) system, an MBMS service is referred to as an evolved-multimedia broadcast and multicast service (eMBMS).
In eMBMS services, according to the 3gpp ts36300 protocol specification, a Multicast Control Channel (MCCH) and a Multicast Transport Channel (MTCH) on the evolved base station (eNB) side are multiplexed on a Multicast Channel (MCH), and the MCH is mapped on a Physical Multicast Channel (PMCH), so the MCCH and the MTCH are multiplexed on the PMCH; when the PMCH that the eNB side carries the MCCH does not exist, the eNB side may stop data transmission of the PMCH, and further, data of the MCCH may not be transmitted.
Disclosure of Invention
In view of this, embodiments of the present invention desirably provide a data sending method and device, which can implement normal sending of MCCH data when a PMCH that carries an MCCH at an eNB side does not exist.
The technical scheme of the embodiment of the invention is realized as follows:
the embodiment of the invention provides a data sending method, which comprises the following steps: when a Multi-cell/Multicast Coordination Entity (MCE) confirms that a PMCH for bearing the MCCH does not exist, an MBMS pseudo session is formed; the MBMS dummy session is used for the eNB to transmit data.
Preferably, the confirming that the PMCH carrying the MCCH does not exist comprises: when the MCE receives a MBMS session stop request (session request) message or an MCCH update, the MCE checks that the PMCH carrying the MCCH does not exist, and then confirms that the PMCH carrying the MCCH does not exist.
Preferably, the forming an MBMS dummy session includes:
after the MCE deletes the context of the MBMS session or updates the MCCH according to the received MBMSSESSIONSTOPREQUEST message, the MCE constructs an MBMS pseudo-session and sets a Temporary Mobile Group Identifier (TMGI) of the MBMS pseudo-session; or, when the MCE receives the MBMS session request message or the MCCH update, the MCE reserves an MBMS session not to be suspended and sets the TMGI of the reserved MBMS session.
Preferably, when the forming of one MBMS dummy session is a MCE constructing one MBMS dummy session, the method further includes: the MCE sends an MBMS scheduling information indication (SCHEDULINGINFORMATION) message containing the TMGI of the MBMS pseudo session, and receives an MBMSSCHEDULINGINFORMATIONMPENSE message; or, the MCE sends an MBMS session start request (SESSIONSTARTREQUEST) message containing the TMGI of the MBMS pseudo session and receives the MBMS session startrequest message.
Preferably, when the forming of the MBMS dummy session reserves an MBMS session for the MCE not to be suspended, the method further includes: the MCE receives the MBMSSESSIONSTARTREQUEST message; wherein, when the MBMS session in the MBMSSSIONSTARTREQUEST message and the MCCH are loaded on the same PMCH, the MCE carries out context updating processing on the reserved MBMS session; the MBMS conversation and the MCCH in the MBMSSESSIONSTARTREQUEST message are carried on different PMCHs, the TMGI of the MBMS in the MBMSSESSIONSTARTREQUEST message is the same as the TMGI of the reserved MBMS conversation, the MCE replaces the TMGI of the reserved MBMS conversation with the TMGI of the reserved MBMS conversation, and context updating processing is carried out on the reserved MBMS conversation and the MBMS conversation in the MBMSSESSIONSTARTREQUEST message.
Preferably, before the mbms context message is sent, the method further includes: the MCE sends a MBMSSESSIONSTARTRESTESTER message and receives the MBMSSESSIONSTARTRESTER message; the MBMS session start request message includes the TMGI of the MBMS pseudo session.
The embodiment of the invention also provides a data sending method, which comprises the following steps: the eNB receives a message containing TMGI of the MBMS pseudo session, and establishes context of the MBMS pseudo session according to MTCH corresponding to the MBMS pseudo session in the received message; when the MBMS pseudo session needs to be scheduled, configuring and sending a media access control scheduling indication (MSI) message; transmitting a multicast/multicast single frequency network (MBSFN) area configuration (AreaConfiguration) message.
Preferably, before the eNB configures the MSI message, the method further includes: the eNB sends a response message containing a message of the TMGI of the MBMS pseudo session.
Preferably, the configuring the MSI message includes: and configuring an MTCH indication value corresponding to the MBMS pseudo session, and indicating that the MTCH is not scheduled.
Preferably, before the eNB receives the mbms context information message, the method further includes: the eNB receives an MBMS session start request (SESSIONSTARTREQUEST) message and transmits an MBMS session start request message.
An embodiment of the present invention further provides an MCE, including: a confirmation module and a formation module; wherein,
the confirmation module is used for confirming whether a PMCH bearing the MCCH exists or not;
the forming module is used for forming an MBMS pseudo session when the confirming module confirms that the PMCH bearing the MCCH does not exist; the MBMS dummy session is used for the eNB to transmit data.
Preferably, the determining module is specifically configured to check that the PMCH carrying the MCCH does not have the MTCH when receiving the mbms session request message or the MCCH update, and determine that the PMCH carrying the MCCH does not exist.
Preferably, the forming module is specifically configured to construct an MBMS pseudo session after deleting the context of the MBMS session according to the received MBMS session request or when the MCCH is updated, and set the TMGI of the MBMS pseudo session; or, when receiving the MBMS to session request message or the MCCH update, reserving an MBMS session not to be suspended, and setting the TMGI of the reserved MBMS session.
Preferably, the MCE further comprises: the device comprises a first sending module and a first receiving module; wherein,
the first sending module is configured to send an MBMS context information message including the TMGI of the MBMS pseudo session; the first receiving module is used for receiving the MBMSSCHEDULINGINORMATION message; or, the first sending module is configured to send an MBMS session start request message including the TMGI of the MBMS pseudo session; the first receiving module is used for receiving the MBMSSESSIONSTARTRESPONSE message.
Preferably, the MCE further comprises: the device comprises a second receiving module and a first processing module; wherein,
the second receiving module is used for receiving the MBMSSESSIONSTARTREQUEST message;
the first processing module is configured to perform context update processing on the retained MBMS session when the MBMS session in the MBMS session request message and the MCCH are carried on the same PMCH; and when the TMGI of the MBMS session in the MBMSSESSIONSTARTREQUEST message is the same as the TMGI of the reserved MBMS session, replacing the TMGI of the reserved MBMS session with the TMGI of an idle MBMS session, and performing context update processing on the reserved MBMS session and the MBMS session in the MBMSSESSIONSTARTREQUEST message.
Preferably, the MCE further comprises: a second sending module and a third receiving module; wherein,
the second sending module is used for sending the MBMSSESSIONSTARTREQUEST message;
the third receiving module is used for receiving the MBMSSESSIONSTARTRESPONSE message.
An embodiment of the present invention further provides an eNB, including: the system comprises a fourth receiving module, an establishing module, a second processing module and a third sending module; wherein,
the fourth receiving module is configured to receive a message including a TMGI of the MBMS pseudo session;
the establishing module is used for establishing the context of the MBMS pseudo session according to the MTCH corresponding to the MBMS pseudo session in the received message;
the second processing module is used for configuring and transmitting the MSI message when the MBMS pseudo-session needs to be scheduled;
the third sending module is configured to send an MBSFNAreaConfiguration message.
Preferably, the third sending module is further configured to send a response message including a message of the TMGI of the MBMS pseudo session.
Preferably, the second processing module is specifically configured to configure an MTCH indication value corresponding to an MBMS pseudo session, to indicate that the MTCH is not scheduled.
Preferably, the eNB further includes: a fourth sending module and a fifth receiving module; wherein,
the fifth receiving module is used for receiving the MBMSSESSIONSTARTREQUEST message;
the fourth sending module is used for sending the MBMSSESSIONSTARTRESPONSE message.
According to the data transmission method and the data transmission equipment provided by the embodiment of the invention, when MCE confirms that the MCCH does not exist, an MBMS pseudo session is formed; the MBMS pseudo session is used for the eNB to transmit data; the eNB receives a message containing TMGI of the MBMS pseudo session, and establishes context of the MBMS pseudo session according to MTCH corresponding to the MBMS pseudo session in the received message; when the MBMS pseudo session needs to be scheduled, configuring an MSI message, and sending the MSI message and an MBSFNAreaconfiguration message to UE; in the embodiment of the invention, when the MCE confirms that the PMCH for bearing the MCCH does not exist, the MCE constructs an MBMS pseudo session or keeps an MBMS session not to be suspended, so that the PMCH has an MBMS session, and the data of the MCCH can be ensured to be normally sent.
Drawings
Fig. 1 is a schematic diagram illustrating the deployment of a service area, a synchronization area, and an MBSFN area of an lte embms service;
fig. 2 is a diagram of a logical architecture for lte emebms services;
fig. 3 is a schematic diagram of a basic processing flow of a data transmission method on an MCE side according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a basic processing flow of an eNB-side data transmission method according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a detailed processing flow of a data transmission method according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a detailed processing flow of a second data transmission method according to an embodiment of the present invention;
fig. 7 is a detailed processing flow diagram of a third data transmission method according to an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of an MCE according to an embodiment of the invention;
fig. 9 is a schematic structural diagram of an eNB according to an embodiment of the present invention.
Detailed Description
To better understand the technical solution of the embodiment of the present invention, the lte embms service is described in detail below. A schematic deployment diagram of a service area, a synchronization area, and an MBSFN area of an lte embms service is shown in fig. 1; fig. 2 shows a logical architecture diagram of an lte embms service, where M1 is a user plane interface, M2 is an internal control plane interface of E-UTRAN, M3 is an interface of E-UTRAN and EPC control planes, and an MBMSGW is an MBMS gateway; the MCE is responsible for the management of MBMS sessions, including: admission control of MBMS sessions, radio resource allocation in the time domain, coordinated transmission of MBMS data in each cell in the MBSFN area, radio configuration of modulation and coding scheme parameters of each channel, and the like.
In the LTeMBMS service, each MBSFN area has one MCCH, zero or more MTCHs, and the MTCHs are multiplexed on the same or different MCHs; where each MTCH corresponds to an MBMS session.
In the lte embms service, the interfaces related to the control plane include an M3 port and an M2 port; wherein, the M3 port is an interface between a Mobility Management Entity (MME) and the MCE, and the M2 port is an interface between the MCE and the eNB; the MCE transmits the relevant configuration parameters to the eNB through an M2 port, and the eNB performs filling of a SystemInformationBlockType2 message, a SystemInformationBlockType13 message and an MBSFNAreaConfiguration message according to the received relevant parameters and scheduling and sending of MBMS data; wherein, the systemlnformationblocktype 13 message indicates the configuration related to the MCCH of the cell and the allocation information of the MBSFN subframe where the MCCH is located; the MBSFNAreaConfiguration message indicates the specific content of the MCCH, including: allocation information of MBSFN area common subframes in a cell, configuration information of PMCH, information of each MTCH, and the like.
In the lte embms service, when a scene that MCCH data cannot be sent due to absence of a PMCH carrying an MCCH at an eNB side is that there is no MBMS session on the PMCH carrying the MCCH at an MCE side or there is no MBMS session on the MCE side, according to the specification of sections 3gpp ts36443-b309.1.7, the MBMS session number on the PMCH is not supported by an MBMS session number message sent through an M2 port; assuming that the MCCH is carried on a certain PMCH for transmission, but no MBMS session exists on the PMCH, when the MCE notifies the eNB of this information, the PMCH needs to be carried in an MBMS context information message, and the number of MTCHs in the PMCH is 0; but conflicts with the regulation that the number of sessions contained in the MBMSSCHEDULINGINFORMATION in the 3GPPTS36443-b30 protocol is minimum 1; therefore, when there is no MTCH on the PMCH carrying the MCCH on the MCE side, the PMCH cannot be carried by the mbmscschedulinnformation message sent through the port M2.
As shown in fig. 3, a basic processing flow of the MCE-side data transmission method in the embodiment of the present invention includes the following steps:
step 101, the MCE confirms that the PMCH bearing the MCCH does not exist;
specifically, when the MCE receives the MBMS session stop request message or the MCCH update sent by the MME, the MCE checks that the PMCH carrying the MCCH does not exist, and then confirms that the PMCH carrying the MCCH does not exist.
Step 102, forming an MBMS pseudo session;
specifically, after deleting the context of the MBMS session or updating the MCCH according to the received MBMS session stop request message, the MCE constructs an MBMS pseudo session and sets a temporary mobile group identity TMGI of the MBMS pseudo session to TMGI-FAKE;
when the MCE receives the MBMS conversation stopping request message or the MCCH updating, the MCE reserves an MBMS conversation not to be suspended, and sets the TMGI of the reserved MBMS conversation to be TMGI-RESELED.
In this embodiment of the present invention, when the forming of the MBMS dummy session is performed by the MCE to construct an MBMS dummy session, the method further includes:
step 103, MCE sends mbmschedulingitordelationmessage containing TMGI of MBMS pseudo session, receives mbmschedulingitornithesponse message; or, the MCE sends the MBMS session start request message containing the TMGI of the MBMS pseudo session, and receives the MBMS session start request message.
In this embodiment of the present invention, when the forming of the MBMS dummy session is performed to reserve an MBMS session for the MCE, the method further includes:
step 103', after receiving the MBMSSESSIONSTARTREQUEST message sent by the MME by the MCE; wherein,
when the MBMS session in the MBMSSESSIONSTARTREQUEST message and the MCCH are borne on the same PMCH, the MCE carries out context updating processing on the reserved MBMS session; the implementation process of performing context update processing on the reserved MBMS session includes:
the MCE sends an MBMSSESSIONSTOPREQUEST message to the eNB, wherein the MBMSSESSIONSTOPREQUEST message carries the context of the reserved session; receiving an MBMSSESSIONSTOPRESPONSE message sent by an eNB; sending an MBMSSSIONSTARTREST message to the eNB, wherein the MBMSSSIONSTARTREST message carries the context of the new session, and receiving the MBMSSSIONSTARTRESTRONSSE message.
The MBMS conversation and the MCCH in the MBMS conversation SESSIONSTARTREQUEST are carried on different PMCHs, and the TMGI of the MBMS conversation in the MBMS conversation starting request message is the same as the TMGI of the reserved MBMS conversation, the MCE uses the TMGI of an idle MBMS conversation to replace the TMGI of the reserved MBMS conversation, and carries out context updating processing on the reserved MBMS conversation and the MBMS conversation in the MBMS conversation starting request message; the implementation process of performing context update processing on the retained MBMS session and the MBMS session in the MBMS session start request message includes:
the MCE sends an MBMSSESSIONSTOPREQUEST message to the eNB, wherein the MBMSSESSIONSTOPREQUEST message carries the reserved context of the MBMS session; receiving an MBMSSESSIONSTOPRESPONSE message sent by an eNB; transmitting an MBMSSSIONSTARTRESTEST message to the eNB, wherein the MBMSSSIONSTARTRESTEST message carries the context of the idle MBMS session, and receiving the MBMSSSIONSTARTRESTISPONSE message transmitted by the eNB; sending an MBMSSSIONSTARTREST message to the eNB, wherein the MBMSSSIONSTARTREST message carries the context of the new session, and receiving the MBMSSSIONSTARTRESTRONSSE message.
As shown in fig. 4, a basic processing flow of the eNB-side data transmission method in the embodiment of the present invention includes the following steps:
step 201, eNB receives a message containing TMGI of MBMS pseudo session;
specifically, the eNB receives an MBMS candidate session management message sent by the MCE through port M2, where the MBMS candidate session management message includes a TMGI of an MBMS pseudo session; or, the eNB receives an MBMS session start request message sent by the MCE through port M2, where the MBMS session start request message includes the TMGI of the MBMS pseudo session.
Step 202, the eNB establishes a context of the MBMS dummy session according to the MTCH corresponding to the MBMS dummy session in the received message.
Step 203, when the MBMS pseudo session needs to be scheduled, the eNB configures and transmits an MSI message;
specifically, when performing data scheduling, the scheduler in the eNB sets a STOP indication value in a logical channel corresponding to the MBMS pseudo session in the MSI message to 2047, indicates that the MTCH is not scheduled, and sends the configured MSI message to the UE.
In step 204, the eNB sends an MBSFNAreaConfiguration message.
Example one
As shown in fig. 5, a detailed processing flow of a data transmission method according to an embodiment of the present invention includes the following steps:
step 301, when the MCE confirms that the PMCH carrying the MCCH does not exist, a pseudo session is formed;
specifically, after deleting the context of the MBMS session or updating the MCCH according to the received MBMS session request message, the MCE checks that the PMCH carrying the MCCH does not have the MTCH, and then confirms that the PMCH carrying the MCCH does not exist; and constructing an MBMS pseudo session, and setting the TMGI of the MBMS pseudo session as TMGI-FAKE.
Step 302, MCE sends mbmschedulinginnformation message to eNB;
here, the TMGI including the MBMS pseudo session in the MBMS pseudo session information message is TMGI-FAKE.
In step 303, the eNB sends an mbmscschedulinnformationresponse message to the MCE.
Step 304, the eNB establishes a context of the MBMS pseudo session according to the MTCH corresponding to the MBMS pseudo session in the MBMS pseudo session management.
Step 305, the eNB configures and transmits an MSI message;
specifically, when performing data scheduling, the scheduler in the eNB sets a STOP indication value in a logical channel corresponding to the MBMS pseudo session in the MSI message to 2047, indicates that the MTCH is not scheduled, and sends the configured MSI message to the UE.
In step 306, the eNB sends an MBSFNAreaConfiguration message to the UE.
Example two
As shown in fig. 6, a detailed processing flow diagram of a second data transmission method according to an embodiment of the present invention includes the following steps:
step 401, when the MCE confirms that the PMCH carrying the MCCH does not exist, a pseudo session is formed;
specifically, after deleting the context of the MBMS session or updating the MCCH according to the received MBMS msbmsssisionstoprequest message, the MCE checks that the PMCH carrying the MCCH does not have the MTCH, and then confirms that the PMCH carrying the MCCH does not exist; and constructing an MBMS pseudo session, and setting the TMGI of the MBMS pseudo session as TMGI-FAKE.
Step 402, the MCE sends an MBMSSESSIONSTARTREQUEST message to the eNB;
here, the TMGI including the MBMS pseudo session in the MBMS session start request message is TMGI-FAKE.
In step 403, the eNB sends an MBMSSESSIONSTARTRESPONSE message to the MCE.
Step 404, the MCE sends an mbmschedulinginnformation message to the eNB;
here, the PMCH used for carrying the MCCH in the MBMS pseudo session information message includes the MTCH corresponding to the MBMS pseudo session.
In step 405, the eNB sends an mbmscschedulinnformationresponse message to the MCE.
Step 406, the eNB establishes a context of the MBMS pseudo session according to the MTCH corresponding to the MBMS pseudo session in the MBMS pseudo session information.
Step 407, the eNB configures and transmits an MSI message;
specifically, the MAC scheduler in the eNB sets a STOP indication value in a logical channel corresponding to the MBMS pseudo session in the MSI message to 2047 during scheduling, indicates that the MTCH is not scheduled, and sends the configured MSI message to the UE.
In step 408, the eNB sends an MBSFNAreaConfiguration message to the UE.
EXAMPLE III
As shown in fig. 7, a detailed processing flow diagram of a third data transmission method in an embodiment of the present invention includes the following steps:
in step 501, MME sends mbmssessionstorerequest message to MCE.
Step 502, the MCE confirms that the PMCH bearing the MCCH does not exist, and a pseudo session is formed
Specifically, the MCE checks that the PMCH carrying the MCCH does not have the MTCH, and confirms that the PMCH carrying the MCCH does not exist; reserving an MBMS session not to be suspended and setting a TMGI of the reserved MBMS session to TMGI-RESVED.
In step 503, the MCE sends an mbmssessionpreprispsone message to the MME.
In step 504, the MME sends an MBMSSESSIONSTARTREQUEST message to the MCE.
Step 505, the MCE sends an mbmssessionstartsponce message to the MME.
When the MBMS session in the MBMS session start request message and the MCCH are on the same PMCH, the MCE performs context update processing on the reserved MBMS session, that is: step 506, step 507, step 508 and step 509 are executed in sequence;
when the MBMS session in the MBMS session start request message and the MCCH are carried on different PMCHs and the TMGI of the MBMS in the MBMS session start request message is the same as the TMGI of the reserved MBMS session, the MCE replaces the TMGI-reset with a TMGI of an idle MBMS session, and performs context update processing on the reserved MBMS session and the MBMS session in the MBMS session start request message, that is: step 506, step 507, step 508 ', step 509', step 508 and step 509 are performed in this order.
Step 506, the MCE sends an mbmssessionstorerequest message to the eNB;
wherein the MBMS session request message carries a context of the reserved MBMS session.
Step 507, the MCE receives the mbmssessionstoppresponse message sent by the eNB.
Step 508', the MCE sends an MBMSSESSIONSTARTREQUEST message to the eNB;
wherein the MBMS session start request message carries the context of the idle MBMS session.
In step 509', the MCE receives the MBMSSESSIONSTARTRESPONSE message sent by the eNB.
Step 508, the MCE sends an MBMSSESSIONSTARTREQUEST message to the eNB;
wherein, the MBMSSSIONSTARTREQUEQUEST message carries the context of the new session.
In step 509, the MCE receives the MBMSSESSIONSTARTRESPONSE message.
In order to implement the data transmission method, an embodiment of the present invention further provides an MCE, where a schematic structural diagram of the MCE is shown in fig. 8, and the MCE includes: a confirmation module 11 and a formation module 12; wherein,
the confirming module 11 is configured to confirm whether a PMCH carrying the MCCH exists;
the forming module 12 is configured to form an MBMS pseudo session when it is determined that the PMCH carrying the MCCH does not exist; the MBMS dummy session is used for the eNB to transmit data.
Preferably, the confirming module 11 is specifically configured to check that the PMCH carrying the MCCH does not have the MTCH after receiving the mbms session request message or during updating the MCCH, and confirm that the PMCH carrying the MCCH does not exist.
Preferably, the forming module 12 is specifically configured to construct an MBMS pseudo session after deleting the context of the MBMS session or when updating the MCCH according to the received MBMS session sessionrequest message, and set the TMGI of the MBMS pseudo session; or, when receiving the MBMS to session stop request message or the MCCH update, reserving an MBMS session not to be suspended, and setting the TMGI of the reserved MBMS session.
Preferably, the MCE further comprises: a first transmitting module 13 and a first receiving module 14; wherein, the first sending module 13 is configured to send an MBMS context information message including the TMGI of the MBMS pseudo session; the first receiving module 14 is configured to receive an mbmschedulinlingnformationresponse message; or,
the first sending module 13 is configured to send an MBMS session start request message including the TMGI of the MBMS pseudo session; the first receiving module 14 is configured to receive a mbms session start response message.
Preferably, the MCE further comprises: a second receiving module 16 and a first processing module 17; wherein,
the second receiving module 16 is configured to receive a MBMSSESSIONSTARTREQUEST message;
the first processing module 17 is configured to perform context update processing on the reserved MBMS session when the MBMS session in the MBMS session start request message and the MCCH are carried on the same PMCH; and when the MBMS session in the MBMSSESSIONSTARTREQUEST message and the MCCH are carried on different PMCHs, and the TMGI of the MBMS session in the MBMS session starting request message is the same as the TMGI of the reserved MBMS session, replacing the TMGI of the reserved MBMS session with an idle TMGI of the MBMS session, and performing context updating processing on the reserved MBMS session and the MBMS session in the MBMS session starting request message.
Preferably, the MBMSSESSIONSTARTREQUEST message is sent by MME;
preferably, the MCE further comprises: the second sending module 15 and the third receiving module 18; wherein,
the second sending module 15 is configured to send the MBMSSESSIONSTARTREQUEST message;
the third receiving module 18 is configured to receive a MBMSSESSIONSTARTRESPONSE message.
Preferably, the first processing module 17 performs a context update process on the reserved MBMS session, including: sending an MBMSSESSIONSTOPREQUEST message to the eNB, wherein the MBMSSESSIONSTOPREQUEST message carries a context for reserving a session; receiving an MBMSSESSIONSTOPRESPONSE message sent by an eNB; sending an MBMSSSIONSTARTREST message to the eNB, wherein the MBMSSSIONSTARTREST message carries the context of the new session, and receiving the MBMSSSIONSTARTRESTRONSSE message;
preferably, the first processing module 17 performs context update processing on the retained MBMS session and the MBMS session in the MBMS session start request message, including: transmitting an MBMSSESSIONSTOPREQUEST message to the eNB, wherein the MBMSSESSIONSTOPREQUEST message carries the reserved context of the MBMS session; receiving an MBMSSESSIONSTOPRESPONSE message sent by an eNB; transmitting an MBMSSSIONSTARTRESTEST message to the eNB, wherein the MBMSSSIONSTARTRESTEST message carries the context of the idle MBMS session, and receiving the MBMSSSIONSTARTRESTISPONSE message transmitted by the eNB; sending an MBMSSSIONSTARTREST message to the eNB, wherein the MBMSSSIONSTARTREST message carries the context of the new session, and receiving the MBMSSSIONSTARTRESTRONSSE message.
In order to implement the above data transmission method, an embodiment of the present invention further provides an eNB, where a schematic structural diagram of the eNB is shown in fig. 9, and the eNB includes: a fourth receiving module 21, a building module 22, a second processing module 23 and a third sending module 24; wherein,
the fourth receiving module 21 is configured to receive a message including a TMGI of the MBMS pseudo session;
the establishing module 22 is configured to establish a context of the MBMS dummy session according to the MTCH corresponding to the MBMS dummy session in the received message;
the second processing module 23 is configured to configure and send an MBSFN area configuration message when the MBMS pseudo session needs to be scheduled;
the third sending module 24 is configured to send an MBSFNAreaConfiguration message.
Preferably, the third sending module 24 is further configured to send a response message including a message of the TMGI of the MBMS pseudo session.
Preferably, the second processing module 23 is specifically configured to configure an MTCH indication value corresponding to the MBMS pseudo session in the MSI, indicating that the MTCH is not scheduled.
Preferably, the eNB further includes: a fourth transmitting module 25 and a fifth receiving module 26; wherein,
the fifth receiving module 26 is configured to receive a MBMSSESSIONSTARTREQUEST message;
the fourth sending module 25 is configured to send an MBMSSESSIONSTARTRESPONSE message.
It should be noted that, in practical applications, the functions of the confirmation module 11, the formation module 12, the first sending module 13, the first receiving module 14, the second sending module 15, the second receiving module 16, the first processing module 17, and the third receiving module 18 may be implemented by a Central Processing Unit (CPU) or a microprocessor unit (MPU) located on the MCE.
In practical applications, the functions of the fourth receiving module 21, the establishing module 22, the second processing module 23, the third sending module 24, the fourth sending module 25 and the fifth receiving module 26 may be implemented by a CPU, an MPU, a Digital Signal Processor (DSP) or a programmable gate array (FPGA) located on the eNB.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (20)
1. A method for transmitting data, the method comprising:
when a multi-cell/multicast coordination entity MCE confirms that a physical multicast channel PMCH for bearing a multi-point control channel MCCH does not exist, a multimedia broadcast and multicast service MBMS pseudo session is formed; and the MBMS pseudo session is used for transmitting data by the base station eNB.
2. The method according to claim 1, wherein the confirming that the PMCH carrying the MCCH does not exist comprises:
when the MCE receives the MBMS session stop request message or the MCCH update, the MCE checks that the PMCH bearing the MCCH does not have the multicast transmission channel MTCH, and then confirms that the PMCH bearing the MCCH does not exist.
3. The data transmission method of claim 1, wherein the forming an MBMS dummy session comprises:
after deleting the context of the MBMS session or updating the MCCH according to the received MBMS session stop request message, the MCE constructs an MBMS pseudo session and sets a Temporary Mobile Group Identifier (TMGI) of the MBMS pseudo session; or,
when the MCE receives the MBMS conversation stopping request message or the MCCH updating, the MCE reserves an MBMS conversation not to be suspended and sets the TMGI of the reserved MBMS conversation.
4. The data transmission method of claim 1, wherein when the forming of the MBMS dummy session is performed by the MCE to construct an MBMS dummy session, the method further comprises:
MCE sends MBMS scheduling information indication message of TMGI containing the MBMS pseudo conversation, and receives MBMS scheduling information indication response message; or,
and the MCE sends an MBMS session starting request message containing the TMGI of the MBMS pseudo session and receives an MBMS session starting request response message.
5. The data transmission method of claim 3, wherein when the forming of the MBMS dummy session reserves an MBMS session for the MCE not to be suspended, the method further comprises: MCE receives MBMS conversation starting request message; wherein,
when the MBMS conversation in the MBMS conversation starting request message and the MCCH are borne on the same PMCH, the MCE carries out context updating processing on the reserved MBMS conversation;
and the MBMS conversation in the MBMS conversation starting request message and the MCCH are loaded on different PMCHs, and when the TMGI of the MBMS in the MBMS conversation starting request message is the same as the TMGI of the reserved MBMS conversation, the MCE replaces the TMGI of the reserved MBMS conversation by the TMGI of an idle MBMS conversation, and carries out context updating processing on the reserved MBMS conversation and the MBMS conversation in the MBMS conversation starting request message.
6. The data transmission method of claim 4, wherein before the transmitting the MBMS scheduling information indication message, the method further comprises:
MCE sends MBMS conversation starting request message and receives MBMS conversation starting request response message; the MBMS session start request message includes the TMGI of the MBMS dummy session.
7. A method for transmitting data, the method comprising:
the eNB receives a message containing TMGI of the MBMS pseudo session, and establishes context of the MBMS pseudo session according to MTCH corresponding to the MBMS pseudo session in the received message;
when the MBMS pseudo session needs to be scheduled, configuring and sending a media access control scheduling indication MSI message;
and sending the multicast/multicast single frequency network MBSFN area configuration message.
8. The data transmission method as claimed in claim 7, wherein before the eNB configures the MSI message, the method further comprises:
the eNB sends a response message containing a message of the TMGI of the MBMS pseudo session.
9. The data transmission method as claimed in claim 7, wherein the configuring the MSI message comprises: and configuring an MTCH indication value corresponding to the MBMS pseudo session, and indicating that the MTCH is not scheduled.
10. The data transmission method of claim 7, wherein before the eNB receives the MBMS scheduling information indication message, the method further comprises:
and the eNB receives the MBMS conversation starting request message and sends an MBMS conversation starting request response message.
11. A multi-cell/multicast coordination entity, characterized in that the multi-cell/multicast coordination entity comprises: a confirmation module and a formation module; wherein,
the confirmation module is used for confirming whether a PMCH bearing the MCCH exists or not;
the forming module is used for forming an MBMS pseudo session when the confirming module confirms that the PMCH bearing the MCCH does not exist; the MBMS dummy session is used for the eNB to transmit data.
12. The multi-cell/multicast coordination entity of claim 11, wherein the confirmation module is specifically configured to, when receiving the MBMS session stop request message or the MCCH update, check that the PMCH carrying the MCCH does not have the MTCH, and confirm that the PMCH carrying the MCCH does not exist.
13. The multi-cell/multicast coordination entity according to claim 11, wherein the forming module is specifically configured to construct an MBMS dummy session and set a TMGI of the MBMS dummy session after deleting a context of the MBMS session according to the received MBMS session stop request message or when updating the MCCH; or,
when receiving the MBMS-to-session stop request message or the MCCH update, reserving an MBMS session not to be suspended, and setting the TMGI of the reserved MBMS session.
14. The multi-cell/multicast coordination entity according to claim 11, wherein said multi-cell/multicast coordination entity further comprises: the device comprises a first sending module and a first receiving module; wherein,
the first sending module is configured to send an MBMS scheduling information indication message including the TMGI of the MBMS pseudo session; the first receiving module is configured to receive an MBMS scheduling information indication response message; or,
the first sending module is configured to send an MBMS session start request message including the TMGI of the MBMS pseudo session; the first receiving module is configured to receive an MBMS session start request response message.
15. The multi-cell/multicast coordination entity according to claim 13, wherein said multi-cell/multicast coordination entity further comprises: the device comprises a second receiving module and a first processing module; wherein,
the second receiving module is configured to receive an MBMS session start request message;
the first processing module is configured to perform context update processing on the reserved MBMS session when the MBMS session in the MBMS session start request message and the MCCH are carried on the same PMCH; and when the MBMS conversation in the MBMS conversation starting request message is the same as the TMGI of the reserved MBMS conversation, replacing the TMGI of the reserved MBMS conversation by the TMGI of an idle MBMS conversation, and performing context updating processing on the reserved MBMS conversation and the MBMS conversation in the MBMS conversation starting request message.
16. The multi-cell/multicast coordination entity according to claim 14, wherein said multi-cell/multicast coordination entity further comprises: a second sending module and a third receiving module; wherein,
the second sending module is configured to send an MBMS session start request message;
the third receiving module is configured to receive an MBMS session start request response message.
17. A base station, characterized in that the base station comprises: the system comprises a fourth receiving module, an establishing module, a second processing module and a third sending module; wherein,
the fourth receiving module is configured to receive a message including a TMGI of the MBMS pseudo session;
the establishing module is used for establishing the context of the MBMS pseudo session according to the MTCH corresponding to the MBMS pseudo session in the received message;
the second processing module is used for configuring and transmitting the MSI message when the MBMS pseudo-session needs to be scheduled;
the third sending module is configured to send an MBSFN area configuration message.
18. The base station of claim 17, wherein the third sending module is further configured to send a response message including a message of the TMGI of the MBMS pseudo session.
19. The base station of claim 17, wherein the second processing module is specifically configured to configure an MTCH indicator value corresponding to an MBMS pseudo session, indicating that the MTCH is not scheduled.
20. The base station of claim 17, wherein the base station further comprises: a fourth sending module and a fifth receiving module; wherein,
the fifth receiving module is configured to receive an MBMS session start request message;
the fourth sending module is configured to send an MBMS session start request response message.
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