CN102348164B - eMBMS (evolved multimedia broadcast/multicast service) releasing method and eMBMS system - Google Patents

eMBMS (evolved multimedia broadcast/multicast service) releasing method and eMBMS system Download PDF

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CN102348164B
CN102348164B CN201010246199.8A CN201010246199A CN102348164B CN 102348164 B CN102348164 B CN 102348164B CN 201010246199 A CN201010246199 A CN 201010246199A CN 102348164 B CN102348164 B CN 102348164B
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rnti
embms
enb
traffic
mce
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CN102348164A (en
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张现周
张文英
李虎虎
李建辉
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Rudong Wenyuan investment and Development Co., Ltd
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ZTE Corp
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Priority to PCT/CN2011/072599 priority patent/WO2012016446A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
    • H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
    • H04L63/0457—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload wherein the sending and receiving network entities apply dynamic encryption, e.g. stream encryption
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/02—Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/60—Context-dependent security
    • H04W12/69—Identity-dependent
    • H04W12/75—Temporary identity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses an eMBMS (evolved multimedia broadcasting/multimedia service) releasing method. The method comprises the steps of: allocating different multicast broadcast radio network temporary identifiers RNTIs for different eMBMSs; scrambling the eMBMSs by using the allocated RNTIs; and releasing the scrambled eMBMSs. The invention further discloses an eMBMS system which comprises a broadcast/multicast service center (BM-SC), a multi-cell/multicast coordination entity (MCE) and an eNB (eNodeB), wherein the broadcast/multicast service center (BM-SC) is used for providing the eMBMSs; the multi-cell/multicast coordination entity (MCE) is used for allocating different RNTIs for different eMBMSs; and the eNB is used for scrambling the eMBMSs by using the allocated RNTIs, and releasing the scrambled eMBMSs. With the invention, the handling capacity of a user terminal processor can be saved, the sharing of physical layer wireless resources can be realized, and the cruising power of a battery can be increased.

Description

EMBMS service publishing method and eMBMS system
Technical field
The present invention relates to LTE (long term evolution, Long Term Evolution) moving communicating field, in particular to eMBMS (evolved MBMS, enhancement mode broadcast multi-broadcasting) service publishing method and eMBMS system.
Background technology
Fig. 1 is the structured flowchart of the eMBMS system of correlation technique, comprise four logical device: MME (mobile management entity, Mobility Management Entity), MCE (Multi-cell/multicast Coordination Entity, multiple cell multicast cooperation entity), eNB (eNodeb, strengthen Node B), eMBMS GW gateway; A MME can be communicated with multiple MCE by M3 interface, exchange of signaling; A MCE can pass through M2 (E-UTRAN internal control plane interface, E-UTRAN internal control face interface) and communicate with multiple eNB, exchange of signaling; EMBMS gateway exchanges subscriber face data by M1 (Userplane interface, interface in the user plane) and eNB; MME passes through Sm interface, control eMBMS gateway.
Channel mapping in eNB comprises: mapping logical channels is to transmission channel, and transmission channel is mapped to physical channel.From eMBMS, logic channel has MTCH (eMBMS TrafficChannel, Multimedia Broadcast Multicast Service channel) and MCCH (eMBMS Control Channel, multicast and broadcast control channel), transmission channel has MCH (eMBMS Channel, multicast broadcast channel), physical channel has PMCH (Physic eMBMS Channel, physical multicast broadcast channel), MTCH and MCCH is mapped on MCH, and MCH is mapped on PMCH.
A PMCH can carry MCH, a MCH carries MTCH and MCCH; MTCH is upper can carry multiple MBMS data stream.PMCH generates scrambler, for distinguishing MBMS data by physical district ID and M_RNTI (eMBMS Radio Network Temporary Identifier, multicast and broadcast wireless network temporary indentification).RNTI refers to wireless network identifier (Radio Network Temporary Identifier).Such UE (user terminal) is when decoding eMBMS data, M_RNTI is used to generate scrambler, descrambling PDCCH (Physics Downlink Control Channel, Physical Downlink Control Channel), and then the PMCH that decodes, only have by the data decode of whole PMCH out, can be decoded MCH, then can distinguish MCCH or MTCH data, if MTCH data, only have complete decoding to distinguish business.
Inventor finds in above-mentioned correlation technique, although user only pays close attention to a Business Stream, but the data of the PMCH needing decoding whole, user terminal all can abandon after receiving other Business Streams, waste the ability of processor like this, waste the electric energy of user terminal such as mobile phone preciousness, shorten the stand-by time of user terminal, poor user experience.
Summary of the invention
Main purpose of the present invention is to provide a kind of eMBMS service publishing method and eMBMS system, with at least solve above-mentioned user terminal can not identify the problem of care eMBMS business.
According to an aspect of the present invention, provide a kind of eMBMS service publishing method, comprising: for the RNTI that different eMBMS traffic assignments is different; Use the RNTI scrambling eMBMS business of distributing; Issue the eMBMS business of scrambling.
According to a further aspect in the invention, provide a kind of eMBMS system, comprising: broadcast multicast service center (BM-SC), for providing eMBMS business; MCE, for the RNTI that the eMBMS traffic assignments for different is different; ENB, for using the RNTI scrambling eMBMS business of distribution, and issues the eMBMS business of scrambling.
The M_RNTI that the data flow of the different eMBMS business in correlation technique on same MTCH all shares PMCH carries out scrambling, and eMBMS service publishing method of the present invention and eMBMS system, for the RNTI that different eMBMS traffic assignments is different, so the user terminal solving correlation technique can not identify the problem of be concerned about eMBMS business, thus save the disposal ability of user's terminal handler, realize sharing of physical layer radio resources, increase the flying power of battery.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structured flowchart of the eMBMS system of correlation technique;
Fig. 2 shows the flow chart of the eMBMS service publishing method according to the embodiment of the present invention;
Fig. 3 shows the flow chart distributing RNTI according to the preferred embodiment of the invention;
Fig. 4 shows the flow chart of scrambling eMBMS business according to the preferred embodiment of the invention;
Fig. 5 shows the flow chart of RNTI resource dispose procedure according to the preferred embodiment of the invention;
Fig. 6 shows the block diagram of MCE according to the preferred embodiment of the invention.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
EMBMS system comprises four logical device: MME, MCE, eNB, eMBMSGW; A MME can pass through M3 (control plane interface betweenE-UTRAN and EPC, the chain of command interface between E-UTRAN and EPC) and communicate with multiple MCE, exchange of signaling; A MCE can be communicated with multiple eNB by M2 interface, exchange of signaling; EMBMS gateway exchanges subscriber face data by M1 interface and eNB; MME passes through Sm interface, control eMBMS gateway.Embodiments of the invention are implemented based on this eMBMS system.
Fig. 2 shows the flow chart of the eMBMS service publishing method according to the embodiment of the present invention, comprising:
Step S10, for the RNTI that different eMBMS traffic assignments is different;
Step S20, uses the RNTI scrambling eMBMS business of distributing;
Step S30, issues the eMBMS business of scrambling.
The M_RNTI that the data flow of the different eMBMS business in correlation technique on same MTCH all shares PMCH carries out scrambling, although this causes user terminal only to pay close attention to a Business Stream, and the data of whole PMCH that needs to decode.And the eMBMS service publishing method of the present embodiment, for the RNTI that different eMBMS traffic assignments is different, so user terminal can when decoded data, the data of the RNTI institute scrambling of its eMBMS business paid close attention to of only decoding, the user terminal which solves correlation technique can not identify the problem of be concerned about eMBMS business, thus save the disposal ability of user's terminal handler, realize sharing of physical layer radio resources, increase the flying power of battery.
Preferably, pre-set eNB and reserve multiple RNTI, MCE and use reserved RNTI to set up resource pool, wherein, the eNB being in same multicast group reserves identical RNTI, and eNB is then set in advance as and does not use a little reserved RNTI.RNTI can be divided into groups, separate a part for eMBMS business, be put on MCE as resource pool unified management.This embodiment achieves by the unified management of MCE to RNTI.
Preferably, step S10 comprises:
BM-SC determines issue eMBMS business, and sends service distribution request to MME, wherein carries the traffic ID of eMBMS business;
After MME receives service distribution request, forward RNTI request to MCE, wherein carry the traffic ID of eMBMS business;
After MCE receives RNTI request, from multiple RNTI of resource pool, select a RNTI to be carried in RNTI response, from resource pool, delete the RNTI of selection, set up the mapping of RNTI and traffic ID, and return RNTI response to MME;
MME therefrom obtains RNTI after receiving RNTI response, is carried in service distribution response, and returns service distribution response to BM-SC;
BM-SC obtains RNTI from service distribution response;
BM-SC provides the traffic ID of RNTI and eMBMS business to UE.
This flow process using RNTI relevant for eMBMS business as resource unified management, by RNTI in time with eMBMS business-binding, this binding relationship is notified UE and eNB respectively, UE with eNB uses the same RNTI to process data, completes the communication of eating dishes without rice or wine.This flow process is less to existing service distribution flow process amendment, therefore easily realizes.
Fig. 3 shows the flow chart distributing RNTI according to the preferred embodiment of the invention, comprising:
1, BM-SC determines issuing service on website, first sends RNTI request message to MME;
2, MME receives RNTI request message, and the MCE to correspondence forwards;
3, MCE receives RNTI request message, distributes RNTI resource, sends RNTI and responds to MME;
4, MME receives RNTI response, is transmitted to BM-SC.
Preferably, step S20 comprises:
BM-SC determines to play eMBMS business, and sends MBMS session start request to MME, wherein carries the traffic ID of eMBMS business;
MME is to MCE transmitting MBMS session start request;
After MCE receives MBMS session start request, and eNB sets up the M1 passage between eNB to MBMS gateway, and according to the mapping of setting up, the RNTI corresponding to traffic ID is sent to eNB;
EMBMS business is sent to eNB by M1 passage by BM-SC;
ENB uses RNTI scrambling from the eMBMS business of M1 passage.
This flow process is less to existing eMBMS session establishment process amendment, therefore easily realizes.
Fig. 4 shows the flow chart of scrambling eMBMS business according to the preferred embodiment of the invention, comprising:
1, BM-SC asks played data, and MME triggers and sets up eMBMS load bearing process;
2, MME sends MBMS SESSION START REQUEST message (comprising RNTI and eMBMS session id) to MCE;
3, MCE sends MBMS SESSION START REQUEST (comprising RNTI and eMBMS session id) to relevant eNB, creates eMBMS session instance simultaneously;
4, eNB receives MBMS SESSION START REQUEST, creates eMBMS session instance, preserves RNTI and session id information, sends MBMS SESSIONSTART RESPONSE message to MCE simultaneously;
5, after MCE receives the MBMS SES SION START RESPONSE response message of eNB, MBMS SESSION START RESPONSE is sent to MME;
6, after MME receives MBMS SESSION START RESPONSE message, start to send Media Stream to eNB.
Afterwards, eNB uses the RNTI distributed to send data to UE, completes transmission and the reception of multicast broadcast data.
Preferably, embodiments of the invention also provide the release RNTI method of resource, comprising:
After BM-SC plays eMBMS business, send MBMS session to MME and stop request, wherein carry the traffic ID of eMBMS business;
MME stops request to the session of MCE transmitting MBMS;
After MCE receives MBMS session stopping request, the M1 passage between release eNB to MBMS gateway, and according to the mapping of setting up, the RNTI corresponding to traffic ID is recovered in resource pool.
By Resource recovery in time, the efficiency of eMBMS system can be improved further.
Fig. 5 shows the flow chart of RNTI resource dispose procedure according to the preferred embodiment of the invention, comprising:
1, data playback is complete, needs the resource of release busy, BM-SC triggers resource dispose procedure;
2, MME sends MBMS SESSION STOP REQUEST message to MCE;
3, after MCE receives MBMS SESSION STOP REQUEST message, release RNTI resource, sends message MBMS SESSION STOP REQUEST message to eNB;
4, eNB receives MBMS SESSION STOP REQUEST message;
5, eNB releasing resource and eMBMS srvice instance, sends MBMS SESSIONSTOP RESPONSE message to MCE;
6, MCE receives MBMS SESSION STOP RESPONSE message, release eMBMS srvice instance, sends MBMS SESSION STOP RESPONSE message to MME, completes the release of carrying.
Preferably, step S30 comprises: eNB carries MCH on PMCH, and MCH carries MTCH and MCCH, is carried the eMBMS business of scrambling by MTCH.Preferably, UE uses the eMBMS business of RNTI decode scrambled from MTCH.The present embodiment is consistent with correlation technique in physical source distributing, and easily realize, therefore UE directly can use the eMBMS business of RNTI decode scrambled from MTCH.UE accessed web page, finds corresponding business, preserves corresponding eMBMS session id and RNTI, and latency services is play, or receives data immediately.
Preferably, BM-SC provides the traffic ID of RNTI and eMBMS business by website or note to UE.These modes are simple.
Embodiments provide a kind of eMBMS system, comprising: BM-SC, for providing eMBMS business; MCE, for the RNTI that the eMBMS traffic assignments for different is different; ENB, for using the RNTI scrambling eMBMS business of distribution, and issues the eMBMS business of scrambling.
The M_RNTI that the data flow of the different eMBMS business in correlation technique on same MTCH all shares PMCH carries out scrambling, and this eMBMS system, for the RNTI that different eMBMS traffic assignments is different, so the user terminal solving correlation technique can not identify the problem of be concerned about eMBMS business, thus save the disposal ability of user's terminal handler, realize sharing of physical layer radio resources, increase the flying power of battery.
Fig. 6 shows the block diagram of MCE 100 according to the preferred embodiment of the invention, comprising:
Resource pool 10, for preserving the multiple RNTI pre-setting eNB and do not use;
Distribution module 20, after receiving the RNTI request from BM-SC, selects a RNTI to be carried in RNTI response, deletes the RNTI of selection, set up the mapping of RNTI and traffic ID from resource pool, and return RNTI response to MME from multiple RNTI of resource pool;
Conversation module 30, after receiving the MBMS session start request from BM-SC, and eNB sets up the M1 passage between eNB to MBMS gateway, and according to the mapping of setting up, the RNTI of the traffic ID corresponded in MBMS session start request is sent to eNB.
From above description, can find out, the present invention is by being each eMBMS traffic assignments RNTI, UE can be made only to be concerned about, and the RNTI of business carries out demodulation to data, makes user terminal distinguish traffic performance as early as possible, abandons physical layer data, and unconcerned eMBMS business need not be abandoned, thus save the disposal ability of processor, realize sharing of physical layer radio resources, increase the flying power of battery.
In addition, adopt the method for the invention and system, compared with prior art, no longer consider the distribution of Radio Resource, realize the dynamic assignment of wireless bandwidth, only distribute RNTI, reduce the complexity of equipment, reduce the complexity of plant maintenance, reduce OPEX (Operating Expenses, operating cost).
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, and in some cases, step shown or described by can performing with the order be different from herein, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. an enhancement mode broadcast multi-broadcasting eMBMS service publishing method, is characterized in that, comprising:
For the multicast and broadcast wireless network temporary indentification RNTI that different eMBMS traffic assignments is different;
EMBMS business described in the RNTI scrambling using described distribution;
Issue the eMBMS business of described scrambling, wherein, described method also comprises: pre-set eNB and reserve multiple RNTI, and multiple cell multicast cooperation entity MCE uses described reserved RNTI to set up resource pool.
2. method according to claim 1, is characterized in that, the described eNB being in same multicast group reserves identical RNTI.
3. method according to claim 2, is characterized in that, the RNTI different for different eMBMS traffic assignments comprises:
Broadcast multicast service center BM-SC determines the described eMBMS business of issue one, and sends service distribution request to MME, wherein carries the traffic ID of described eMBMS business;
After described MME receives described service distribution request, forward RNTI request to described MCE, wherein carry the traffic ID of described eMBMS business;
After described MCE receives described RNTI request, from described multiple RNTI of described resource pool, select a RNTI to be carried in RNTI response, from described resource pool, delete the RNTI of described selection, set up the mapping of described RNTI and described traffic ID, and return described RNTI to described MME and respond;
Described MME therefrom obtains described RNTI after receiving described RNTI response, is carried in service distribution response, and returns the response of described service distribution to described BM-SC;
Described BM-SC obtains described RNTI from described service distribution response;
Described BM-SC provides the traffic ID of described RNTI and described eMBMS business to UE.
4. method according to claim 3, is characterized in that, uses eMBMS business described in the RNTI scrambling of described distribution to comprise:
Described BM-SC determines to play described eMBMS business, and sends MBMS session start request to described MME, wherein carries the traffic ID of described eMBMS business;
Described MME forwards described MBMS session start request to described MCE;
After described MCE receives described MBMS session start request, and described eNB sets up the M1 passage between described eNB to MBMS gateway, and according to the mapping of described foundation, the described RNTI corresponding to described traffic ID is sent to described eNB;
Described eMBMS business is sent to described eNB by described M1 passage by described BM-SC;
Described eNB uses described RNTI scrambling from the described eMBMS business of described M1 passage.
5. method according to claim 4, is characterized in that, also comprises:
After described BM-SC plays described eMBMS business, send MBMS session to described MME and stop request, wherein carry the traffic ID of described eMBMS business;
Described MME forwards described MBMS session to described MCE and stops request;
Described MCE receives after described MBMS session stops request, discharges the M1 passage between described eNB to described MBMS gateway, and according to the mapping of described foundation, is recovered in described resource pool by the described RNTI corresponding to described traffic ID.
6. method according to claim 4, is characterized in that, the eMBMS business issuing described scrambling comprises:
Described eNB carries MCH on PMCH, and described MCH carries MTCH and MCCH, is carried the eMBMS business of described scrambling by described MTCH.
7. method according to claim 6, is characterized in that, also comprises: described UE uses described RNTI to decode from described MTCH the eMBMS business of described scrambling.
8. method according to claim 3, is characterized in that, described BM-SC provides the traffic ID of described RNTI and described eMBMS business by website or note to described UE.
9. an enhancement mode broadcast multi-broadcasting eMBMS system, is characterized in that, comprising:
Broadcast multicast service center BM-SC, for providing eMBMS business;
Multiple cell multicast cooperation entity MCE, for the RNTI that the described eMBMS traffic assignments for different is different;
ENB, for use described distribution RNTI scrambling described in eMBMS business, and issue the eMBMS business of described scrambling, wherein, described MCE comprises: resource pool, for preserving the multiple RNTI pre-setting described eNB and do not use.
10. system according to claim 9, is characterized in that, described MCE comprises:
Distribution module, after receiving the RNTI request from described BM-SC, from described multiple RNTI of described resource pool, select a RNTI to be carried in RNTI response, the RNTI of described selection is deleted from described resource pool, set up the mapping of described RNTI and described traffic ID, and return described RNTI to MME and respond;
Conversation module, after receiving the MBMS session start request from described BM-SC, and described eNB sets up the M1 passage between described eNB to MBMS gateway, and according to the mapping of described foundation, the described RNTI of the traffic ID corresponded in described MBMS session start request is sent to described eNB.
CN201010246199.8A 2010-08-04 2010-08-04 eMBMS (evolved multimedia broadcast/multicast service) releasing method and eMBMS system Active CN102348164B (en)

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