CN106982455A - The selective sending method of business data packet, core network element, access network element - Google Patents

The selective sending method of business data packet, core network element, access network element Download PDF

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Publication number
CN106982455A
CN106982455A CN201610032684.2A CN201610032684A CN106982455A CN 106982455 A CN106982455 A CN 106982455A CN 201610032684 A CN201610032684 A CN 201610032684A CN 106982455 A CN106982455 A CN 106982455A
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China
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service data
sending
area information
network element
data frame
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CN106982455B (en
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马子江
陈琳
艾建勋
刘红军
卢忱
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ZTE Corp
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ZTE Corp
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Priority to PCT/CN2016/110025 priority patent/WO2017124862A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0205—Traffic management, e.g. flow control or congestion control at the air interface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/12—Messaging; Mailboxes; Announcements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • 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 Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a kind of selective sending method of business data packet, core network element, access network element, including：Business datum is received, the sending zone information associated with the business datum is generated；The business datum and the sending zone information associated with the business datum are sent to access network element, to determine whether to be transmitted the business datum according to the sending zone information associated with the business datum by the access network element.

Description

Selective sending method of service data packet, core network element and access network element
Technical Field
The present invention relates to a service data transmission technology in the field of wireless communication, and in particular, to a selective transmission method, a core network element, and an access network element for a service data packet.
Background
With the rapid development of economic society, the quantity of automobile reserves in China is rapidly increased, road traffic accidents frequently occur, the road traffic accidents become one of important factors influencing public safety in recent years, and the problem of road traffic safety becomes one of basic problems influencing society and harmoniously improving civilian life. There is an urgent need to improve traffic safety in terms of technology, policy, education, etc., of which the improvement of vehicle safety design is an important component.
Technologies for improving vehicle safety are mainly classified into passive safety technologies and active safety technologies. The passive safety technology is used for protecting personnel and articles inside and outside the vehicle after an accident occurs; the active safety technology is used for preventing and reducing vehicle accidents and avoiding personnel from being injured; active safety technology is the focus and trend of modern vehicle safety technology development.
The collision early warning system based on communication realizes real-time information interaction between vehicles and road side infrastructures by utilizing advanced wireless communication technology and new generation information processing technology, informs current states (including positions, speeds, accelerations and driving paths of the vehicles) of each other and acquires road environment information, cooperatively senses road dangerous conditions, provides various collision early warning information in time, prevents road traffic safety accidents from happening, and becomes a new idea for trying to solve the road traffic safety problems in all countries at present.
Internet of vehicles (V2X, Vehicle to X): the Vehicle information is provided through sensors, Vehicle-mounted terminals and electronic tags which are arranged on a Vehicle, various communication technologies are adopted to realize interconnection and intercommunication between a Vehicle and a Vehicle (V2V, Vehicle to Vehicle), between the Vehicle and a Person (V2P, Vehicle to Person), between the Vehicle and a road (Infrastructure) (V2I, Vehicle Infrastrastrastrastrastracture), information is extracted and shared on an information network platform, and effective management and control are carried out on the Vehicle and comprehensive services are provided. Fig. 1 is a schematic diagram of traffic and scheduling information transmitted to vehicles through a network information platform.
With the development of new mobile communication technology in recent years, research for solving communication applications based on internet of vehicles using Long Term Evolution (LTE) technology has internationally emerged.
The roadside communication Unit (RSU) can receive the vehicle request, ensure the vehicle to access the Internet (Internet) and has the function of a gateway; in addition, the system also has the functions of data operation, storage and forwarding.
At present, two car networking realization technologies exist: dedicated Short Range Communication (DSRC) and LTE, wherein DSRC is based on IEEE802.11P and IEEE1609 series standards, 802.11P is responsible for physical layer and Medium Access Control (MAC) technology, and 1609 is responsible for upper layer specifications. The LTE based V2X technology was just discussed and there is no standard yet.
The LTE V2X technology currently under discussion by the third Generation Partnership Project (3 GPP) includes: the RSU may be implemented by a stationary User Equipment (UE) or an E-UTRAN based node B (eNB, E-UTRAN NodeB), and V2V/V2I/V2P may be implemented by a PC5 interface or a Uu interface, where the PC5 interface refers to an air interface of a Device-to-Device (D2D, Device to Device) and the Uu interface refers to an air interface of the UE to the eNB.
In order to effectively utilize mobile network resources, 3GPP has proposed a Multimedia Broadcast Multicast Service (MBMS), which is a technology for transmitting data from one data source to a plurality of target mobile terminals, and implements sharing of network (including core network and access network) resources and improves utilization of network resources (especially air interface resources). The MBMS transmission mode before 3GPP R13 refers to transmission in MBMS Single frequency Network (MBSFN) mode, that is: multiple cells transmit the same content at the same time. The 3GPP proposed a research topic of Single-cell MBMS (SC-PTM) in LTE-Advanced (LTE-a) of R13, wherein a Single-cell MBMS service is transmitted on a Physical Downlink Shared CHannel (PDSCH). Compared with the MBSFN transmission mode, each cell in the SC-PTM transmission mode can flexibly select to transmit or not transmit V2X service at the same or different time.
According to the prior art, the network side comprises: V2X application server (V2X AS, V2X ApplicationServer), also called: application Server (AS), V2X server (V2X server), V2X Application layer (V2X Application layer). V2X AS provides content of V2X Service for Broadcast/Multicast Service center (BM-SC, Broadcast-Multicast-Service center), BM-SC and/or 3GPP core Network, and its Residential Access Network (RAN, social Access Network) Access Network element (e.g., eNB) establish MBMS Bearer for each V2X Service type, or establish an MBMS Bearer for each V2X Service type, correspond to a radio Access Bearer (MBMS RAB, MBMS radio Access Bearer) and allocate a specific Temporary Mobile Group Identity (TMGI).
V2X AS classifies V2X traffic: the V2X AS classifies the received V2X data packets from a plurality of Vehicle UEs, such AS: the periodic class, the event triggered class, aims to configure these V2X packets to different Temporary Mobile Group Identities (TMGI), i.e. different MBMS bearers (MBMS Bearer). The V2X AS divides V2X traffic into several V2X traffic types, and each V2X traffic type corresponds to a TMGI. In one embodiment, the TMGI corresponding to each V2X service type may be a request from the BM-SC by the V2X AS, and the request is distributed by the BM-SC and then fed back to the V2X AS.
Each V2X service type is uniquely associated with a TMGI id, that is, an MBMS bearer (or referred to as MBMS radio access bearer). The BM-SC needs to establish a separate MBMS bearer for each TMGI, that is, each V2X service type needs to establish a separate MBMS bearer, that is: each TMGI corresponds to one V2X service type corresponding to one MBMS bearer.
Since V2X packets of each V2X service type originate from one or more Vehicle UEs, each of which may be located in a different location (e.g., different cell), and even if the same Vehicle UE transmits different packets of the V2X service at different times, the UE may be located in different locations, and therefore, broadcast area information associated with multiple V2X packets of the V2X service transmitted by the BM-SC to the eNB may be different. However, according to the current protocol, the MBMS bearer established by the BM-SC for each TMGI is configured in the broadcast area at the Start of Session (Session Start), i.e. V2X packets originating from different Vehicle UEs, even if these Vehicle UEs are in different cells, the V2X packets are sent in the same broadcast area. As shown in fig. 1.
For example, according to the prior art, V2X data packet 1 transmitted by the legacy UE1 in cell 1 and V2X data packet 2 transmitted by the legacy UE2 in cell 5 both reach V2X AS, and V2X AS is further transmitted to all cells (cell 1, 2, 3, … 8) in eNB1 and eNB2 through BM-SC and MBMS-GW. Thus, the legacy UEs in cell 7 can receive both V2X packet 1 and V2X packet 2. Obviously, for V2X service, V2X packet 1 from cell 1 only needs to be broadcast in cell 1 or in neighboring cells 2, 3, 4, and not in more distant cells 5, 6, 7, 8. That is, for V2X service, it is not necessary to transmit every V2X packet in this broadcast region, but it is only necessary to broadcast in the cell from which every V2X packet originates or in nearby cells.
Since all V2X packets of the same V2X service type are broadcast and transmitted in a large area, instead of each V2X packet being transmitted only in the cell from which it originates and its neighboring cells, a great deal of waste of radio resources is caused in the radio air interface, and many Vehicle UEs are forced to receive the V2X packets that are not related to it, thereby increasing the power consumption of the Vehicle UEs.
Disclosure of Invention
In order to solve the above technical problem, embodiments of the present invention provide a selective sending method, a core network element, and an access network element for a service data packet.
The selective sending method for the service data packet provided by the embodiment of the invention comprises the following steps:
receiving service data and generating sending area information associated with the service data;
and sending the service data and the sending area information associated with the service data to an access network element so as to judge whether to send the service data or not through the access network element according to the sending area information associated with the service data.
In this embodiment of the present invention, the receiving service data and generating sending area information associated with the service data includes:
receiving service data, and acquiring position information associated with the service data;
and generating sending area information associated with the service data according to the position information, and/or the service type, and/or the authorized transmission range of the terminal, and/or the information priority associated with the service data.
In the embodiment of the present invention, sending area information associated with the service data is set in a first type data frame, where the first type data frame does not carry the service data, and the sending area information set in the first type data frame is associated with more than one service data; or,
and setting the sending area information associated with the service data in a second type data frame, wherein the second type data frame carries the service data, and the sending area information set in the second type data frame is associated with the carried service data.
In the embodiment of the present invention, the first type data frame includes two seed type data frames; the first sub-class data frame determines the sending area information by setting the identification content of each sending area; and determining the sending area information in the second subclass data frame through a bitmap (bitmap), wherein each bit in the bitmap represents whether an area corresponding to the bit is used as a sending area.
In the embodiment of the invention, the identification content of one sending area is set in the second type data frame, and the sending area is associated with a plurality of adjacent sending areas; or, determining the sending area information through a bitmap in the second type data frame, wherein each bit in the bitmap represents whether the area corresponding to the bit is used as a sending area.
In the embodiment of the present invention, the method further includes:
when the identification content of one sending area is set in the second type data frame, indication information is also set, and the indication information is used for indicating that the sending area information corresponds to the identification content of the one sending area or corresponds to the identification content of the one sending area and the identification contents of a plurality of associated adjacent sending areas.
In this embodiment of the present invention, the sending the service data and the sending area information associated with the service data to an access network element includes:
sending the data frame bearing the service data and the first type data frame bearing the sending area information to an access network element; or,
and sending the second type data frame carrying the service data and the sending area information to an access network element.
Another embodiment of the present invention provides a method for selectively sending a service data packet, including:
receiving service data sent by a core network element and sending area information associated with the service data;
and judging whether to transmit the service data according to the transmission area information associated with the service data.
In the embodiment of the present invention, the method further includes:
judging a transmission mode adopted by the service data;
and when the service data adopts a first transmission mode, judging whether to transmit the service data according to the transmitting area information associated with the service data.
In this embodiment of the present invention, the determining whether to send the service data according to the sending area information associated with the service data includes:
when the area controlled by the access network element belongs to the area in the sending area information, the service data is sent to the area controlled by the access network element;
and when the area controlled by the access network element does not belong to the area in the sending area information, the service data is not sent.
In this embodiment of the present invention, the receiving service data sent by a core network element and sending area information associated with the service data includes:
receiving a data frame which is sent by a core network element and bears the service data and the first type data frame which bears the sending area information; or,
and receiving the second type data frame which is sent by the core network element and used for bearing the service data and sending the area information.
In this embodiment of the present invention, the determining whether to send the service data according to the sending area information associated with the service data includes:
analyzing the first type data frame to obtain sending area information associated with the service data; judging whether to transmit the service data according to the transmitting area information; or,
analyzing the second type data frame to obtain sending area information associated with the service data; judging whether to transmit the service data according to the transmitting area information;
the first type data frame carries identification content of each sending area; or carrying a bitmap, wherein each bit in the bitmap represents whether the region corresponding to the bit is used as a sending region or not;
the second type data frame carries identification content of one sending area, and the one sending area is associated with a plurality of adjacent sending areas; or carrying bitmaps, wherein each bit in the bitmaps represents whether the area corresponding to the bit is used as a sending area.
The core network element provided by the embodiment of the invention comprises:
the service data processing module is used for receiving service data and generating sending area information associated with the service data;
and the service data forwarding module is used for sending the service data and the sending area information associated with the service data to an access network element so as to judge whether to send the service data or not through the access network element according to the sending area information associated with the service data.
In this embodiment of the present invention, the service data processing module is further configured to:
receiving service data, and acquiring position information associated with the service data; and generating sending area information associated with the service data according to the position information, and/or the service type, and/or the authorized transmission range of the terminal, and/or the information priority associated with the service data.
In this embodiment of the present invention, the service data processing module is further configured to:
sending area information related to the service data is set in a first type data frame, wherein the first type data frame does not carry the service data, and the sending area information set in the first type data frame is related to more than one service data; or,
and setting the sending area information associated with the service data in a second type data frame, wherein the second type data frame carries the service data, and the sending area information set in the second type data frame is associated with the carried service data.
In the embodiment of the present invention, the first type data frame includes two seed type data frames; the first sub-class data frame determines the sending area information by setting the identification content of each sending area; and determining the sending area information in the second subclass data frame through a bitmap, wherein each bit in the bitmap represents whether an area corresponding to the bit is used as a sending area or not.
In this embodiment of the present invention, the service data processing module is further configured to:
setting the identification content of one transmission area in the second type data frame, wherein the one transmission area is associated with a plurality of adjacent transmission areas; or, determining the sending area information through a bitmap in the second type data frame, wherein each bit in the bitmap represents whether the area corresponding to the bit is used as a sending area.
In this embodiment of the present invention, the service data processing module is further configured to:
when the identification content of one sending area is set in the second type data frame, indication information is also set, and the indication information is used for indicating that the sending area information corresponds to the identification content of the one sending area or corresponds to the identification content of the one sending area and the identification contents of a plurality of associated adjacent sending areas.
In this embodiment of the present invention, the service data forwarding module is further configured to:
sending the data frame bearing the service data and the first type data frame bearing the sending area information to an access network element; or,
and sending the second type data frame carrying the service data and the sending area information to an access network element.
The access network element provided by the embodiment of the invention comprises:
a receiving module, configured to receive service data sent by a core network element and sending area information associated with the service data;
and the decision module is used for judging whether the service data is sent or not according to the sending area information associated with the service data.
In this embodiment of the present invention, the access network element further includes:
the judging module is used for judging the transmission mode adopted by the service data;
the decision module is further configured to: and when the service data adopts a first transmission mode, judging whether to transmit the service data according to the transmitting area information associated with the service data.
In an embodiment of the present invention, the decision module is further configured to:
when the area controlled by the access network element belongs to the area in the sending area information, the service data is sent to the area controlled by the access network element;
and when the area controlled by the access network element does not belong to the area in the sending area information, the service data is not sent.
In an embodiment of the present invention, the receiving module is further configured to:
receiving a data frame which is sent by a core network element and bears the service data and the first type data frame which bears the sending area information; or,
and receiving the second type data frame which is sent by the core network element and used for bearing the service data and sending the area information.
In an embodiment of the present invention, the decision module is further configured to:
analyzing the first type data frame to obtain sending area information associated with the service data; judging whether to transmit the service data according to the transmitting area information; or,
analyzing the second type data frame to obtain sending area information associated with the service data; judging whether to transmit the service data according to the transmitting area information;
the first type data frame carries identification content of each sending area; or carrying a bitmap, wherein each bit in the bitmap represents whether the region corresponding to the bit is used as a sending region or not;
the second type data frame carries identification content of one sending area, and the one sending area is associated with a plurality of adjacent sending areas; or carrying bitmaps, wherein each bit in the bitmaps represents whether the area corresponding to the bit is used as a sending area.
In the technical scheme of the embodiment of the invention, a core network element receives service data and generates sending area information associated with the service data; and sending the service data and the sending area information associated with the service data to an access network element so as to judge whether to send the service data or not through the access network element according to the sending area information associated with the service data. It can be seen that the service data in the embodiment of the present invention is not transmitted in a large area range, but a certain service data is transmitted in a corresponding area range. The waste of air interface wireless resources is avoided, and the UE is prevented from receiving a plurality of service data packets irrelevant to the UE.
Drawings
FIG. 1 is a schematic diagram of traffic and scheduling information sent to vehicles via a network information platform;
fig. 2 is a flowchart illustrating a selective transmission method of a service data packet according to a first embodiment of the present invention;
fig. 3 is a flowchart illustrating a selective transmission method for a service data packet according to a second embodiment of the present invention;
fig. 4 is a schematic structural component diagram of a core network element according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an access network element according to an embodiment of the present invention.
Detailed Description
So that the manner in which the features and aspects of the embodiments of the present invention can be understood in detail, a more particular description of the embodiments of the invention, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings.
Fig. 2 is a flowchart illustrating a selective sending method for a service data packet according to a first embodiment of the present invention, and as shown in fig. 2, the selective sending method for a service data packet in this example is applied to a core network element side, where the selective sending method for a service data packet includes the following steps:
step 201: and receiving service data and generating sending area information associated with the service data.
In the embodiment of the present invention, the service data may be of various types, for example, V2X service data.
Taking V2X service data as an example, the core network element includes: V2X server, BM-SC, MBMS-GW. The Core network elements are interconnected through a Core Network (CN). The V2X server receives the service data and generates transmission area information associated with the service data.
Here, when the transmission method is broadcasting, the transmission area information is also referred to as broadcast area information. Each broadcast area information, typically for one MBMS RAB, is: one MBMS RAB corresponds to one broadcast area information, and a plurality of MBMS RABs correspond to a plurality of broadcast area information.
The BM-SC associates each MBMS RAB with one TMGI, i.e.: when a certain MBMS service is carried using a specific MBMS RAB, a specific TMGI is assigned to the MBMS service, such that each TMGI corresponds to a broadcast area.
In the embodiment of the invention, one V2X service is an MBMS service, and one TMGI identifier is adopted corresponding to one MBMSRAB. The broadcast area information in this example is described by taking broadcast area information associated with a user data packet (corresponding to service data) of a certain V2X service as an example. In practice, the broadcast area information generated by the core network element may be broadcast area information associated with any MBMS service, and is not limited to the V2X service.
In the embodiment of the invention, a core network element receives service data or generates sending area information associated with the service data. The method for generating the sending area information associated with the service data by the core network element may be a decision or a behavior of the core network itself, or may be based on one or more of the following information: according to the obtained position information associated with the service data, according to the service type, according to the UE authorized transmission range, according to the information priority and the like.
The core network refers to, according to the obtained location information associated with the service data: and when or after the core network element receives the service data, obtaining the position information associated with the service data.
The method for the core network to generate the sending area information associated with the service data according to its own decision or behavior is as follows: even if the core network does not obtain the position information associated with the service data, the core network still can generate the sending area information associated with the service data according to the strategy and judgment of the core network.
Taking V2X service data as an example, V2X server receives a V2X packet (corresponding to service data) and position information associated with the V2X packet. Here, the V2X packets refer to packets carrying V2X service (V2X user data packet), and these V2X packets may come from one or more vehicleues or from other servers. The V2X packet has associated with it location information that may be carried by the packet itself, namely: a Packet header (Packet Head) carried in a data Packet, or a Packet payload (Packet payload) carried in a data Packet; the location information may also be carried in a separate packet and the packet is associated with the V2X packet. The location information associated with the V2X data packet may be a coordinate identifier, a cell identifier (cell ID) or a cell identifier list (cell ID list). Such as: from which specific location the V2X packet was obtained (coordinate identification), or from which cell the V2X packet was obtained (cell ID).
Then, the V2X server determines the transmission area of the V2X packet. Here, the transmission area of the V2X packet is: the range in which the V2X packets are transmitted is also referred to as the broadcast region of the V2X packets when the V2X service is transmitted in broadcast mode. The broadcast area information for transmitting the V2X packet may be one or more of the following: coordinate identification (e.g., GPS coordinates), broadcast area (broadcast), MBMS Service area list (MBMS Service area list), cell identification list (cell ID), cell identification (cell ID). The V2X server can determine its sending area according to the location information associated with the V2X data packet, such as: if the V2X packet is from a certain cell ID, the V2X server may determine that the transmission area of the packet is a plurality of cells (represented by cell ID list) formed by the cell and its neighboring cells.
The V2X server sends the received V2X packet and the broadcast area information associated with the packet to the BM-SC via the MB2-u interface (user plane).
Step 202: and sending the service data and the sending area information associated with the service data to an access network element so as to judge whether to send the service data or not through the access network element according to the sending area information associated with the service data.
In the embodiment of the present invention, taking V2X service data as an example, an access network element refers to the following network elements: base station, node B (node B), E-UTRAN-based node B (eNB, E-UTRAN NodeB).
In the embodiment of the present invention, taking V2X service data as an example, after receiving a V2X data packet sent by a BM-SC and broadcast area information associated with the data packet, an MBMS-GW sends the V2X data packet and the broadcast area information associated with the data packet to an eNB. The V2X packet sent by the MBMS-GW to the eNB carries or is associated with broadcast area information itself.
When a certain V2X service type is carried using an MBMS RAB, the V2X service type corresponds to a TMGI. At this time, the MBMS-GW needs to carry broadcast area information of the V2X service in the user data frame (user data frame) of the V2X service transmitted to the eNB.
Since the V2X packets of the V2X service originate from one or more Vehicle UEs, each of which may be located in different locations (e.g., different cells), even though the same Vehicle UE transmits different packets of the V2X service at different times, the location of the Vehicle UE may be different, and therefore, the broadcast area information associated with the V2X packets of the V2X service transmitted by the MBMS-GW to the eNB may be different.
Referring to 3GPP technical specification 25.446, in a user Data frame (user dataframe) sent by BM-SC to eNB, four synchronization Packet Data Unit types (SYNC PDU type, synchronization Packet Data Unit type) have been defined and used, respectively identified as: SYNC PDU type0, 1, 2, 3. The SYNC PDU types 1 and 2 can be used to carry MBMS user data of a certain MBMS RAB (in this example, SYNC PDU type1 is used to carry V2X data packets), and SYNC PDU types 0 and 3 are used to carry synchronization information of a certain MBMS RAB.
In the embodiment of the present invention, sending area information associated with the service data is set in a first type data frame, where the first type data frame does not carry the service data, and the sending area information set in the first type data frame is associated with more than one service data; or,
and setting the sending area information associated with the service data in a second type data frame, wherein the second type data frame carries the service data, and the sending area information set in the second type data frame is associated with the carried service data.
The first type data frame comprises two seed type data frames; the first sub-class data frame determines the sending area information by setting the identification content of each sending area; and determining the sending area information in the second subclass data frame through a bitmap, wherein each bit in the bitmap represents whether an area corresponding to the bit is used as a sending area or not.
Setting the identification content of one transmission area in the second type data frame, wherein the one transmission area is associated with a plurality of adjacent transmission areas; or, determining the sending area information through a bitmap in the second type data frame, wherein each bit in the bitmap represents whether the area corresponding to the bit is used as a sending area.
When the identification content of one sending area is set in the second type data frame, indication information is also set, and the indication information is used for indicating that the sending area information corresponds to the identification content of the one sending area or corresponds to the identification content of the one sending area and the identification contents of a plurality of associated adjacent sending areas.
Finally, the core network element sends the data frame bearing the service data and the first type data frame bearing the sending area information to an access network element; or,
and sending the second type data frame carrying the service data and the sending area information to an access network element.
Taking the V2X service as an example, in order to accurately indicate the broadcast area of each V2X packet, the V2X packet that the BM-SC sends to the eNB through the MBMS-GW may be:
mode 1: one broadcast area information is associated with each or every several V2X packets.
Mode 2: each V2X packet carries broadcast area information itself.
According to mode 1:
the embodiment of the invention defines a new SYNC PDU type (for convenience of description, identified as SYNC PDU type 4), and uses the SYNC PDU type to carry a user data frame containing sending region information, wherein the user data frame corresponds to one or more V2X data packets. According to the protocol, in the SC-PTM, the cell ID is adopted, and 52 bits (28+24) and 6 nibbles (8 bits per byte) are used. The embodiment of the invention designs SYNC PDU Type4 by referring to SYNC PDU Type3, and specifically comprises two modification methods of SYNC PDU Type 4-1 and SYNC PDU Type 4-2.
Referring to Table 1, Table 1 shows the format of SYNC PDU Type 4-1.
TABLE 1
From the SYNC PDU Type 4-1 format, it can be found that each cell ID needs to occupy a large number of bytes.
Considering again that the broadcast area actually required to be transmitted by each V2X packet is only a part of the MBMS broadcast area in the MBMS Session Start procedure (MBMS Session Start procedure) or MBMS Session update procedure (MBMS Session update procedure), that is, the cell ID list in SYNC PDU Type4 is a part of the cell of the MBMS broadcast area (cell ID list) in the MBMS Session Start procedure (MBMS Session Start procedure) or MBMS Session update procedure (MBMS Session update procedure), so that the broadcast area information of the V2X packet is indicated in the SYNC PDU Type4 by using a bit pattern (bitmap). Specifically, the method comprises the following steps:
when the MBMS broadcast area information in the MBMS Session Start procedure (MBMS Session Start procedure) or the MBMS Session update procedure (MBMS Session update procedure) is indicated by the cellID list, the following steps are performed: broadcast area ═ { cell 1 ═st，cell 2nd，.....cell nth}; referring to Table 2, Table 2 is the format of SYNC PDU Type 4-2.
TABLE 2
In SYNC PDU Type4-2, corresponding n bits are adopted for indication, wherein the first bit corresponds to cell 1stThe second bit corresponds to cell 2nd…, the nth bit indicates that the cell corresponding to the bit belongs to the broadcast area of the V2X data packet, and the bit equal to "0" indicates that the cell corresponding to the bit does not belong to the broadcast area of the V2X data packet.
As can be seen from the new SYNC PDU Type4-2 shown in table 2, with the bitmap approach, if 12 bytes are used, 96 bits are used, and a maximum of 96 cells can be indicated. The occupation of bytes is saved.
Generally, in a synchronization sequence (synchronization sequence), transmitted V2X packets all originate from a legacy UE and the location information of the UE is the same, so a SYNC PDU type4 can be transmitted in a synchronization sequence. Thus, in one synchronization sequence, there are included SYNC PDU type1 carrying V2X data packets and SYNC PDU type0 or 3 carrying synchronization information, and SYNC PDU type4 carrying broadcast area information.
In one embodiment, to ensure reliable transmission of SYNC PDU type4, several identical SYNC PDU types 4 may also be sent in one synchronization sequence.
In one embodiment, when there is no V2X packet in a synchronization sequence, that is: when the SYNC PDU type1 is not transmitted, the SYNC PDU type4 may not be transmitted. Thus, in the synchronization sequence, only SYNC PDU type0 or 3 is transmitted.
According to mode 2:
the embodiment of the present invention defines a new SYNC PDU type (for convenience of description, identified as SYNC PDU type 5), which is a further modification of the existing SYNC PDU type1, that is: the SYNC PDU type not only has the content of SYNC PDU type1 such as V2X data, but also adds corresponding broadcast area information, see table 3.
TABLE 3
In order to reduce the load additionally occupied by the broadcast area information added in the SYNC PDU type5, the following manner may be adopted: the SYNC PDU type5 includes only 1 cell ID for indicating that the current V2X packet is broadcast in the cell or in the cell and its neighboring cells. Subsequent eNB behavior for this approach is described further below.
Also, in order to reduce the load additionally occupied by the broadcast area information added in the SYNC PDU type5, the following manner may be adopted: the broadcast area information of the V2X packet is indicated in SYNC PDU type5 in a bitmap manner (similar to the bitmap in SYNC PDU type 4-2).
Fig. 3 is a flowchart illustrating a selective sending method for a service data packet according to a second embodiment of the present invention, where the selective sending method for a service data packet in this example is applied to an access network element side, and as shown in fig. 3, the selective sending method for a service data packet includes the following steps:
step 301: and receiving service data sent by a core network element and sending area information associated with the service data.
In the embodiment of the invention, firstly, the transmission mode adopted by the service data is judged; and when the service data adopts a first transmission mode, judging whether to transmit the service data according to the transmitting area information associated with the service data.
Taking the V2X service as an example, if the V2X service is transmitted in the MBSFN mode, the eNB ignores the broadcast area associated with the V2X packet of the V2X service, and transmits the broadcast area (MBMS server area or cell ID list) according to the broadcast area provided by the MCE.
That is, when the MCE decides to use the MBSFN mode for a certain MBMS service (e.g., V2X service), each eNB under the control of the MCE cannot select transmission or non-transmission of a V2X packet according to the broadcast area associated with the V2X packet of the V2X service, considering the content synchronization requirement of the entire MBSFN area.
At this time, when the eNB receives SYNC PDU Type4 or SYNC PDUType5 with the V2X packet, the eNB ignores the broadcast area information carried by the eNB and transmits the broadcast area (MBMS server area or cell ID list) provided by the MCE.
If the V2X service is transmitted in SC-PTM mode, the eNB transmits in the broadcast area associated with the V2X packet of the V2X service.
That is, when the MCE decides to use the SC-PTM transmission mode for a certain MBMS service (e.g., V2X service), each eNB under the control of the MCE may select transmission or non-transmission of the V2X packet according to the broadcast area associated with the V2X packet of the V2X service.
In the embodiment of the invention, an access network element receives a data frame which is sent by a core network element and bears the service data and the first type data frame which bears the sending area information; or,
and receiving the second type data frame which is sent by the core network element and used for bearing the service data and sending the area information.
Step 302: and judging whether to transmit the service data according to the transmission area information associated with the service data.
In the embodiment of the invention, the first type data frame is analyzed to obtain the sending area information associated with the service data; judging whether to transmit the service data according to the transmitting area information; or,
analyzing the second type data frame to obtain sending area information associated with the service data; judging whether to transmit the service data according to the transmitting area information;
the first type data frame carries identification content of each sending area; or carrying a bitmap, wherein each bit in the bitmap represents whether the region corresponding to the bit is used as a sending region or not;
the second type data frame carries identification content of one sending area, and the one sending area is associated with a plurality of adjacent sending areas; or carrying bitmaps, wherein each bit in the bitmaps represents whether the area corresponding to the bit is used as a sending area.
Whether the service data is sent is determined, specifically, when the area controlled by the access network element belongs to the area in the sending area information, the service data is sent to the area controlled by the access network element;
and when the area controlled by the access network element does not belong to the area in the sending area information, the service data is not sent.
Taking the V2X service as an example, sending or not sending a V2X service data packet means: user data frames carrying V2X packets are either sent or not. For convenience of description, it is simply referred to as: with or without the V2X packet being sent.
At this time, when the eNB receives SYNC PDU Type4 or SYNC PDUType5 with a V2X data packet, the eNB determines according to broadcast area information carried by the eNB, and when a cell under the control of the eNB belongs to the broadcast area of the V2X data packet, the eNB selects the V2X data to send a V2X data packet in a corresponding cell; when the cell under the control of the eNB does not belong to the broadcast area of the V2X packet, the eNB chooses not to transmit the V2X packet.
In an embodiment, when SYNC PDU Type5 only carries one cell ID information, the eNB may send a corresponding V2X packet only in the cell according to a predetermined agreement; corresponding V2X packets may also be sent in the cell and its neighboring cells.
In one embodiment, when the SYNC PDU Type5 only carries a cell ID information, the SYNC PDU Type5 may also carry a specific indication information (e.g., a bit), and it is assumed that the V2X packet is sent in the cell specified by the cell ID when the bit is 0; bit 1 indicates that the V2X packet is sent in the cell designated by the cell ID and its neighboring cells. In general, the eNB knows neighbor cell list information for each cell under its control.
Fig. 4 is a schematic structural component diagram of a core network element according to an embodiment of the present invention, and as shown in fig. 4, the core network element includes:
a service data processing module 41, configured to receive service data and generate sending area information associated with the service data;
a service data forwarding module 42, configured to send the service data and the sending area information associated with the service data to an access network element, so as to determine, by the access network element, whether to send the service data according to the sending area information associated with the service data.
The service data processing module 41 is further configured to:
receiving service data, and acquiring position information associated with the service data; and generating sending area information associated with the service data according to the position information, and/or the service type, and/or the authorized transmission range of the terminal, and/or the information priority associated with the service data.
The service data processing module 41 is further configured to:
sending area information related to the service data is set in a first type data frame, wherein the first type data frame does not carry the service data, and the sending area information set in the first type data frame is related to more than one service data; or,
and setting the sending area information associated with the service data in a second type data frame, wherein the second type data frame carries the service data, and the sending area information set in the second type data frame is associated with the carried service data.
The first type data frame comprises two seed type data frames; the first sub-class data frame determines the sending area information by setting the identification content of each sending area; and determining the sending area information in the second subclass data frame through a bitmap, wherein each bit in the bitmap represents whether an area corresponding to the bit is used as a sending area or not.
The service data processing module 41 is further configured to:
setting the identification content of one transmission area in the second type data frame, wherein the one transmission area is associated with a plurality of adjacent transmission areas; or, determining the sending area information through a bitmap in the second type data frame, wherein each bit in the bitmap represents whether the area corresponding to the bit is used as a sending area.
The service data processing module 41 is further configured to:
when the identification content of one sending area is set in the second type data frame, indication information is also set, and the indication information is used for indicating that the sending area information corresponds to the identification content of the one sending area or corresponds to the identification content of the one sending area and the identification contents of a plurality of associated adjacent sending areas.
The service data forwarding module 42 is further configured to:
sending the data frame bearing the service data and the first type data frame bearing the sending area information to an access network element; or,
and sending the second type data frame carrying the service data and the sending area information to an access network element.
Those skilled in the art will appreciate that the functions implemented by the elements in the core network element shown in fig. 4 can be understood by referring to the foregoing description of the selective transmission method of the service data packet. The functions of the units in the core network element shown in fig. 4 may be implemented by a program running on a processor, or by specific logic circuits.
Fig. 5 is a schematic structural component diagram of an access network element according to an embodiment of the present invention, and as shown in fig. 5, the access network element includes:
a receiving module 51, configured to receive service data sent by a core network element and sending area information associated with the service data;
and the decision module 52 is configured to determine whether to transmit the service data according to the transmission area information associated with the service data.
The access network element further comprises:
a determining module 53, configured to determine a transmission mode used by the service data;
the decision module 52 is further configured to: and when the service data adopts a first transmission mode, judging whether to transmit the service data according to the transmitting area information associated with the service data.
The decision module 52 is further configured to:
when the area controlled by the access network element belongs to the area in the sending area information, the service data is sent to the area controlled by the access network element;
and when the area controlled by the access network element does not belong to the area in the sending area information, the service data is not sent.
The receiving module 51 is further configured to:
receiving a data frame which is sent by a core network element and bears the service data and the first type data frame which bears the sending area information; or,
and receiving the second type data frame which is sent by the core network element and used for bearing the service data and sending the area information.
The decision module 52 is further configured to:
analyzing the first type data frame to obtain sending area information associated with the service data; judging whether to transmit the service data according to the transmitting area information; or,
analyzing the second type data frame to obtain sending area information associated with the service data; judging whether to transmit the service data according to the transmitting area information;
the first type data frame carries identification content of each sending area; or carrying a bitmap, wherein each bit in the bitmap represents whether the region corresponding to the bit is used as a sending region or not;
the second type data frame carries identification content of one sending area, and the one sending area is associated with a plurality of adjacent sending areas; or carrying bitmaps, wherein each bit in the bitmaps represents whether the area corresponding to the bit is used as a sending area.
It will be understood by those skilled in the art that the functions implemented by the elements in the access network element shown in fig. 5 can be understood by referring to the foregoing description of the selective transmission method of the service data packet. The functions of the units in the core network element shown in fig. 5 may be implemented by a program running on a processor, or may be implemented by specific logic circuits.
The technical schemes described in the embodiments of the present invention can be combined arbitrarily without conflict.
In the embodiments provided in the present invention, it should be understood that the disclosed method and intelligent device may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, all the functional units in the embodiments of the present invention may be integrated into one second processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.

Claims (24)

1. A method for selectively transmitting a service data packet, the method comprising:
receiving service data and generating sending area information associated with the service data;
and sending the service data and the sending area information associated with the service data to an access network element so as to judge whether to send the service data or not through the access network element according to the sending area information associated with the service data.
2. The method of claim 1, wherein the receiving the service data and generating the transmission area information associated with the service data comprises:
receiving service data, and acquiring position information associated with the service data;
and generating sending area information associated with the service data according to the position information, and/or the service type, and/or the authorized transmission range of the terminal, and/or the information priority associated with the service data.
3. The method of claim 1, wherein the selective transmission of the service data packet,
sending area information related to the service data is set in a first type data frame, wherein the first type data frame does not carry the service data, and the sending area information set in the first type data frame is related to more than one service data; or,
and setting the sending area information associated with the service data in a second type data frame, wherein the second type data frame carries the service data, and the sending area information set in the second type data frame is associated with the carried service data.
4. The method of claim 3, wherein the first type of data frame comprises two sub-type data frames; the first sub-class data frame determines the sending area information by setting the identification content of each sending area; and determining the information of the sending area in the second subclass data frame through a bitmap, wherein each bit in the bitmap represents whether the area corresponding to the bit is used as the sending area.
5. The method according to claim 3, wherein the identification content of one transmission area is set in the second type data frame, and the one transmission area is associated with a plurality of adjacent transmission areas; or, determining the sending area information through a bitmap in the second type data frame, wherein each bit in the bitmap represents whether the area corresponding to the bit is used as a sending area.
6. The method of claim 5, wherein the method further comprises:
when the identification content of one sending area is set in the second type data frame, indication information is also set, and the indication information is used for indicating that the sending area information corresponds to the identification content of the one sending area or corresponds to the identification content of the one sending area and the identification contents of a plurality of associated adjacent sending areas.
7. The method of claim 3, wherein the sending the service data and the sending area information associated with the service data to an access network element comprises:
sending the data frame bearing the service data and the first type data frame bearing the sending area information to an access network element; or,
and sending the second type data frame carrying the service data and the sending area information to an access network element.
8. A method for selectively transmitting a service data packet, the method comprising:
receiving service data sent by a core network element and sending area information associated with the service data;
and judging whether to transmit the service data according to the transmission area information associated with the service data.
9. The method of claim 8, wherein the method further comprises:
judging a transmission mode adopted by the service data;
and when the service data adopts a first transmission mode, judging whether to transmit the service data according to the transmitting area information associated with the service data.
10. The method of claim 8, wherein the determining whether to transmit the service data according to the transmission area information associated with the service data comprises:
when the area controlled by the access network element belongs to the area in the sending area information, the service data is sent to the area controlled by the access network element;
and when the area controlled by the access network element does not belong to the area in the sending area information, the service data is not sent.
11. The method of claim 8, wherein the receiving service data sent by a core network element and the sending area information associated with the service data comprises:
receiving a data frame which is sent by a core network element and bears the service data and the first type data frame which bears the sending area information; or,
and receiving the second type data frame which is sent by the core network element and used for bearing the service data and sending the area information.
12. The method of claim 11, wherein the determining whether to transmit the service data according to the transmission area information associated with the service data comprises:
analyzing the first type data frame to obtain sending area information associated with the service data; judging whether to transmit the service data according to the transmitting area information; or,
analyzing the second type data frame to obtain sending area information associated with the service data; judging whether to transmit the service data according to the transmitting area information;
the first type data frame carries identification content of each sending area; or carrying a bitmap, wherein each bit in the bitmap represents whether the region corresponding to the bit is used as a sending region or not;
the second type data frame carries identification content of one sending area, and the one sending area is associated with a plurality of adjacent sending areas; or carrying bitmaps, wherein each bit in the bitmaps represents whether the area corresponding to the bit is used as a sending area.
13. A core network element, wherein the core network element comprises:
the service data processing module is used for receiving service data and generating sending area information associated with the service data;
and the service data forwarding module is used for sending the service data and the sending area information associated with the service data to an access network element so as to judge whether to send the service data or not through the access network element according to the sending area information associated with the service data.
14. The core network element of claim 13, wherein the service data processing module is further configured to:
receiving service data, and acquiring position information associated with the service data; and generating sending area information associated with the service data according to the position information, and/or the service type, and/or the authorized transmission range of the terminal, and/or the information priority associated with the service data.
15. The core network element of claim 13, wherein the service data processing module is further configured to:
sending area information related to the service data is set in a first type data frame, wherein the first type data frame does not carry the service data, and the sending area information set in the first type data frame is related to more than one service data; or,
and setting the sending area information associated with the service data in a second type data frame, wherein the second type data frame carries the service data, and the sending area information set in the second type data frame is associated with the carried service data.
16. The core network element of claim 15, wherein the first type of data frame comprises two sub-type data frames; the first sub-class data frame determines the sending area information by setting the identification content of each sending area; and determining the sending area information in the second subclass data frame through a bitmap, wherein each bit in the bitmap represents whether an area corresponding to the bit is used as a sending area or not.
17. The core network element of claim 15, wherein the service data processing module is further configured to:
setting the identification content of one transmission area in the second type data frame, wherein the one transmission area is associated with a plurality of adjacent transmission areas; or, determining the sending area information through a bitmap in the second type data frame, wherein each bit in the bitmap represents whether the area corresponding to the bit is used as a sending area.
18. The core network element of claim 17, wherein the service data processing module is further configured to:
when the identification content of one sending area is set in the second type data frame, indication information is also set, and the indication information is used for indicating that the sending area information corresponds to the identification content of the one sending area or corresponds to the identification content of the one sending area and the identification contents of a plurality of associated adjacent sending areas.
19. The core network element of claim 15, wherein the service data forwarding module is further configured to:
sending the data frame bearing the service data and the first type data frame bearing the sending area information to an access network element; or,
and sending the second type data frame carrying the service data and the sending area information to an access network element.
20. An access network element, wherein the access network element comprises:
a receiving module, configured to receive service data sent by a core network element and sending area information associated with the service data;
and the decision module is used for judging whether the service data is sent or not according to the sending area information associated with the service data.
21. The access network element of claim 20, wherein the access network element further comprises:
the judging module is used for judging the transmission mode adopted by the service data;
the decision module is further configured to: and when the service data adopts a first transmission mode, judging whether to transmit the service data according to the transmitting area information associated with the service data.
22. The access network element of claim 20, wherein the decision module is further configured to:
when the area controlled by the access network element belongs to the area in the sending area information, the service data is sent to the area controlled by the access network element;
and when the area controlled by the access network element does not belong to the area in the sending area information, the service data is not sent.
23. The access network element of claim 20, wherein the receiving module is further configured to:
receiving a data frame which is sent by a core network element and bears the service data and the first type data frame which bears the sending area information; or,
and receiving the second type data frame which is sent by the core network element and used for bearing the service data and sending the area information.
24. The access network element of claim 23, wherein the decision module is further configured to:
analyzing the first type data frame to obtain sending area information associated with the service data; judging whether to transmit the service data according to the transmitting area information; or,
analyzing the second type data frame to obtain sending area information associated with the service data; judging whether to transmit the service data according to the transmitting area information;
the first type data frame carries identification content of each sending area; or carrying a bitmap, wherein each bit in the bitmap represents whether the region corresponding to the bit is used as a sending region or not;
the second type data frame carries identification content of one sending area, and the one sending area is associated with a plurality of adjacent sending areas; or carrying bitmaps, wherein each bit in the bitmaps represents whether the area corresponding to the bit is used as a sending area.
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