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WO2014000611A1 - Procédé et dispositif de transmission de données - Google Patents

Procédé et dispositif de transmission de données Download PDF

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Publication number
WO2014000611A1
WO2014000611A1 PCT/CN2013/077748 CN2013077748W WO2014000611A1 WO 2014000611 A1 WO2014000611 A1 WO 2014000611A1 CN 2013077748 W CN2013077748 W CN 2013077748W WO 2014000611 A1 WO2014000611 A1 WO 2014000611A1
Authority
WO
WIPO (PCT)
Prior art keywords
data
target node
service
transmitted
node
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2013/077748
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English (en)
Chinese (zh)
Inventor
黄曲芳
戴明增
张宏平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of WO2014000611A1 publication Critical patent/WO2014000611A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0072—Transmission or use of information for re-establishing the radio link of resource information of target access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/20—Interfaces between hierarchically similar devices between access points

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and apparatus for transmitting data. Background technique
  • the carrier aggregation technology UE User Equipment
  • CCs Component Carrier, The component carrier
  • the component carrier performs uplink and downlink communication to support high-speed data transmission.
  • the type of carrier to be aggregated it is divided into two types: carrier aggregation of the same system and carrier aggregation of different systems.
  • Carrier aggregation in different systems refers to that the carrier used by one UE belongs to different systems, such as LTE (Long Term Evolution) + UMTS (Universal Mobile Telecommunications System), or LTE+WiFi (wireless Fidelity, wireless). Fidelity, or UMTS+WiFi, etc.
  • LTE Long Term Evolution
  • UMTS Universal Mobile Telecommunications System
  • LTE+WiFi wireless Fidelity, wireless.
  • Fidelity, or UMTS+WiFi etc. This type of carrier aggregation can take full advantage of the characteristics of various communication systems to achieve efficient and low-cost transmission.
  • a carrier aggregation method for different systems is provided.
  • the network side selects a system according to the current load situation, and establishes a bearer on the system to transmit the data packet of the service.
  • the system cannot meet the QoS (Quality of Service) of the data, the transmission of the data needs to be relocated to another system.
  • the CN Core network
  • embodiments of the present invention provide a method and apparatus for transmitting data.
  • the technical solution is as follows:
  • a method of transmitting data comprising:
  • the source access network node selects a target node in the pre-configured node, and sends a relocation request message to the target node, where the relocation request message is used to relocate data of the to-be-transmitted service of the source access network node.
  • the target node To the target node;
  • the source access network node sends the node information of the target node to the user equipment UE, so that the UE establishes a connection with the target node according to the node information of the target node, and performs data transmission of the to-be-transmitted service.
  • an apparatus for transmitting data comprising:
  • a selection unit configured to select a target node among pre-configured nodes
  • a sending unit configured to send a relocation request message to the target node, where the relocation request message is used to relocate data of a service to be transmitted to the target node;
  • the sending unit is further configured to send the node information of the target node to the user equipment UE, so that the UE establishes a connection with the target node according to the node information of the target node, and performs data transmission of the to-be-transmitted service. .
  • the technical solution provided by the embodiment of the present invention has the beneficial effects of: accessing the network node through the source Selecting a target node in the pre-configured node, and sending a relocation request message to the target node, where the relocation request message is used to relocate data of the source access network node to be transmitted to the target node
  • the foregoing process can relocate the transmission data in time according to the amount of data of the service to be transmitted.
  • FIG. 1 is a flowchart of a method for transmitting data according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method for transmitting data according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of an apparatus for transmitting data according to an embodiment of the present invention. detailed description
  • a terminal a device that provides voice and/or data connectivity to a user, including a wireless terminal or a wired terminal.
  • the wireless terminal can be a handheld device with wireless connectivity, or other processing device connected to the wireless modem, and a mobile terminal that communicates with one or more core networks via a wireless access network.
  • the wireless terminal can be a mobile phone (or "cellular" phone) and a computer with a mobile terminal.
  • the wireless terminal can also be a portable, pocket, handheld, computer built-in or in-vehicle mobile device.
  • the wireless terminal can be a mobile station (English: mobile station), an access point (English: access point), or user equipment (English: User equipment, referred to as UE).
  • a base station may refer to a device in an access network that communicates with a wireless terminal over one or more cells over an air interface.
  • the base station may be a base station in GSM or CDMA (base transceiver station, BTS for short), or a base station in WCDMA (in English: NodeB), or an evolved base station in LTE (in English: The evolutional Node B, referred to as the eNB or the e-NodeB, or the base station in the subsequent evolved network, is not limited by the present invention.
  • a method for transmitting data including:
  • the source access network node selects a target node in the pre-configured node, and sends a relocation request message to the target node, where the relocation request message is used to connect the source access network node to the data to be transmitted. Relocating to the target node;
  • the source access network node sends the node information of the target node to the user equipment UE, so that the UE establishes a connection with the target node according to the node information of the target node, and performs data of the to-be-transmitted service. transmission.
  • the foregoing base station pre-configuring a plurality of WIFI nodes may include the following solutions:
  • the base station selects a WIFI node within the coverage of its lower cell; or,
  • the base station selects a WIFI node in the WIFI node that establishes a data plane channel with the base station.
  • the scheme for pre-configuring the base station of the WIFI node is as follows:
  • one WIFI node corresponds to one base station, and the WIFI node can select the base station as a pre-configured target node.
  • the WIFI node may further select a base station corresponding to the cell with light load sharing, or select a cell corresponding to a cell with a large capacity or a good signal quality.
  • the base station is not limited by the present invention.
  • the method further includes:
  • BSR Buffer Status Report
  • the preset format is The BSR is used to indicate that the data of the to-be-transmitted service of the UE exceeds a preset threshold.
  • the method further includes:
  • the BSR occupies 6 bits and can represent 64 different code points, each of which has a certain meaning.
  • the amount of data reported by the UE to the base station must be within a certain range, and the amount of data beyond this range can only be represented by a unique code point. For example, when the data volume is 0-100 bytes, the reported BSR value is 0. When the data volume is 100-300 bytes, the reported BSR value is 1. When the data volume is 300-600 bytes, the BSR value of the upper limit is 2. When the amount of data is greater than 1000 Bytes, the reported BSR value can only be 63, regardless of the amount of real data that the UE needs to report to the eNB.
  • the relocation request message includes:
  • the number of data packets required to be transmitted by the target node generation is the number of data packets required to be transmitted by the target node generation
  • the method further includes:
  • the participation of the CN is not required, and the complexity of the process is reduced, so that when the service data rate fluctuates, the bearer can be quickly replaced according to the data rate, and the QoS of the data transmission is improved.
  • the source node is a WIFI node
  • the target node is a base station.
  • the ID of the corresponding base station is used. (identity, identity number) is notified to the WiFi access point, where the number of the base stations may be one or more, which is not specifically limited in this embodiment.
  • the WiFi access point may be stored in the form of a list of the base stations that are pre-configured, and may be stored in other forms, which is not specifically limited in this embodiment. It is worth noting that during the communication process, if the base station associated with the UE changes, the network side also needs to notify the WiFi access point of the change of the base station, so that the WiFi access point updates the relevant base station list.
  • the base station bearer status may be updated periodically in the base station list, so that the WiFi access point can select the corresponding relocation target node according to the bearer situation of the base station.
  • the WiFi access point determines whether the data of the service to be transmitted needs to be relocated, and if yes, select at least one target node for relocation in the pre-configured base station.
  • the WiFi access point acquires the QoS of the data transmitted by the system in real time.
  • the WiFi access point finds that the WiFi system cannot meet the QoS of the data, the delay of the data packet cannot meet the transmission standard, or the downlink data is accumulated. If the threshold is exceeded, it is confirmed that the data of the service to be transmitted needs to be relocated.
  • the WiFi access point is from One or more base stations are selected as the target node for relocation in the locally stored base station list, and an RB relocation request is sent thereto, requesting the base station to bear wireless transmission of data on its behalf.
  • the WiFi access point may select any one or more base stations in the base station list as the target node for relocation, or select one or more base stations as the target of relocation according to the bearer capability of the current base station in the base station list.
  • the node is not specifically limited in this embodiment.
  • the WiFi access point does not need to be relocated, the data is continuously transmitted, which is not described in this embodiment.
  • the relocation request message is sent to the selected base station, where the relocation request message includes: a Qos request for the service data to be transmitted and a number of data packets required to be transmitted by the base station, where the number includes the downlink data. The number of packets and the number of packets of upstream data.
  • the relocation request message includes: a Qos request for the service data to be transmitted and a time length t required for the base station to transmit the data, that is, when the base station receives the request message, and replaces the air interface data for the time t.
  • the relocation request message includes: The QoS requirement of the data does not limit the number of data packets to be transmitted or the time to be transmitted.
  • the base station permanently relocates the service to the local device until the service data transmission is completed.
  • information confirming the permanent relocation of the transmission data of the UE to the target node may also be set in the relocation request message.
  • the relocation request message at this time includes: a Qos request for the service data to be transmitted and information for confirming relocation of the transmission data of the UE to the target node.
  • what content is included in the relocation request message may be determined according to actual transmission requirements, which is not specifically limited in this embodiment.
  • the steps 201-202 are performed by the source access network node selecting a target node among the pre-configured nodes, and sending a relocation request message to the target node, where the relocation request message is used. And the step of relocating data of the source access network node to be transmitted to the target node.
  • the base station determines whether it can still bear the service to be transmitted according to the service that is currently carried by the base station, and if yes, returns a response message of the relocation request to the WiFi access point.
  • the WiFi access point informs that the data of the UE to be transmitted has been shared to the base station for transmission, and transmits the node information of the base station to the UE.
  • the node information of the base station includes but is not limited to a base station ID.
  • the base station determines that it cannot bear the service to be transmitted, it returns a message rejecting the relocation request to the WiFi access point, so that the WiFi access point reselects other nodes except the base station to perform relocation. At this point, the WiFi access point returns to step 201 to re-execute its relocation process.
  • the UE establishes a connection with the base station according to the node information of the base station, and performs data transmission.
  • the UE after receiving the node information of the base station, the UE requests to establish an RB (Radio Bearer) in the air interface with the base station. After receiving the request message, the base station establishes an RB with the UE in the air interface to perform data transmission.
  • the UE does not need to record the corresponding core network information, and only needs to know the information of the base station.
  • the process of establishing a connection between the UE and the base station is similar to the prior art, and is not described in this embodiment.
  • the data transmission process after relocating the service to be transmitted is as follows:
  • the CN sends the downlink data to the WiFi access point, and the WiFi access point transfers the downlink data to the base station, and the base station sends the downlink data to the UE;
  • the UE For the uplink data, the UE sends the uplink data to the base station, and the base station sends the data to the WiFi access point, and the WiFi access point sends the uplink data to the CN.
  • the method further includes: notifying the CN information of the relocated base station to the CN, so that the CN is Data describing the transmission service is sent to the base station.
  • the CN is Data describing the transmission service is sent to the base station.
  • Step 203-204 is performed by the source access network node transmitting the node information of the target node to the user equipment UE, so that the UE establishes a connection with the target node according to the node information of the target node, and performs the The step of referring to the data transmission of the transmission service.
  • the participation of the CN is not required, and the complexity of the process is reduced, so that when the service data rate fluctuates, the bearer can be quickly replaced according to the data rate, and the QoS of the data transmission is improved.
  • the source node is a base station
  • the target node is a WIFI node.
  • the relocation of the to-be-transmitted service in this embodiment is triggered by the base station on the LTE side.
  • the base station is configured with one or more related WiFi access points, so that when the relocation needs to be performed, the base station can select an appropriate node from the pre-configured WiFi access points.
  • the base station may store the pre-configured WiFi access point in the form of a list, and may also be stored in other forms, which is not specifically limited in this embodiment.
  • one or more related WiFi access points configured for the base station may be changed according to requirements, and the change of the WiFi access point is notified to the base station, so that the base station can update the WiFi access point list in time.
  • the WiFi access point bearer may be periodically updated in the WiFi access point list, so that the base station can select a corresponding relocation target node according to the bearer situation of the WiFi access point.
  • the base station determines whether the data of the service to be transmitted needs to be relocated, and if yes, select one or more target nodes for relocation in the pre-configured WiFi access point.
  • the base station obtains the QoS of the data transmitted by the system in real time.
  • the base station finds that the LTE system cannot meet the QoS of the data, if the downlink data waiting to be sent in the buffer is too much, and exceeds a predetermined threshold, it is required to confirm Relocate the data of the service to be transmitted.
  • the process of the base station triggering the relocation may be because the LTE system cannot find the QoS of the data, or may be the BSR of the preset format reported by the base station.
  • the base station receives the BSR reported by the UE, it determines whether the received BSR is in the preset format. The BSR, if yes, confirms that the data of the to-be-transmitted service needs to be relocated.
  • the BSR in the preset format is used to indicate that the data to be transmitted in the UE exceeds a preset threshold. After receiving the BSR in the preset format, the base station learns that the BSR needs to be relocated.
  • a BSR format is redefined.
  • the BSR in the preset format may include multiple BSR values, that is, two or more BSR values, where each BSR value may be the same value or a different value.
  • This embodiment is not specifically limited.
  • the BSR value may be the same as the existing BSR value, or may be completely different from the existing BSR value, which is not specifically limited in this embodiment.
  • multiple BSR values can be sent in the same MAC PDU.
  • the base station receives multiple BSR values in the same MAC PDU, it can confirm that the BSR of the preset format is received.
  • multiple BSR values may be sent in a preset time interval.
  • the BSR is confirmed to receive the preset format.
  • a normal BSR value may be sent, for example, a BSR value of 63, and a BSR with a value of 0 is sent in a preset interval.
  • the base station receives the above two BSR values within a preset interval, Then confirm that the BSR of the preset format is received.
  • the base station selects one or more WiFi access points from the locally stored WiFi access point list as the retargeting target node, and sends a relocation request to the base station. , requesting the WiFi access point to undertake wireless transmission of data on its behalf.
  • the base station may select any one or more WiFi access points in the WiFi access point list as the target node for relocation, or select one according to the carrying capacity of the current WiFi access point in the WiFi access point list.
  • the multiple access points of the WiFi access point are used as the target node for relocation, which is not specifically limited in this embodiment.
  • the data is continuously transmitted, which is not described in this embodiment. 302. Send a relocation request message to the selected WiFi access point.
  • the relocation request message is sent to the selected WiFi access point, where the relocation request message includes: a Qos request for the service data to be transmitted and a number of data packets that need to be transmitted by the WiFi access point.
  • the number includes the number of packets of downlink data and the number of packets of uplink data.
  • the relocation request message includes: a QoS requirement of the service data to be transmitted and a length of time t required for the WiFi access point to transmit data, that is, when the request message is received from the WiFi access point, at time t
  • the inner generation is the transmission air interface data.
  • the indication may be performed in the relocation request.
  • the relocation request message includes: The QoS request does not limit the number of data packets to be transmitted or the time to be transmitted. In this way, after receiving the relocation request, the WiFi access point permanently relocates the service to the local device until the service data transmission is completed.
  • information confirming the permanent relocation of the transmission data of the UE to the target node may also be set in the relocation request message.
  • the relocation request message at this time includes: a Qos request for the service data to be transmitted and an information for confirming that the transmission data of the UE is permanently relocated to the target node, and the transmission data includes the data of the service to be transmitted.
  • the content of the relocation request message may be determined according to the actual transmission requirement, which is not specifically limited in this embodiment.
  • the step 301-302 performs that the source access network node selects the target node in the pre-configured node, and sends a relocation request message to the target node, where the relocation request message is used to access the source.
  • the WiFi access point determines whether it can still bear the service to be transmitted according to the service that is currently carried by the WiFi access point, and if yes, returns a response message of the relocation request to the base station.
  • the base station After receiving the response message returned by the WiFi access point, the base station passes It is known that the data of the UE to be transmitted is shared to the WiFi access point for transmission, and the node information of the WiFi access point is sent to the UE.
  • the node information of the WiFi access point includes, but is not limited to, ID information of the WiFi access point.
  • the WiFi access point determines that it cannot bear the service to be transmitted, it returns a message rejecting the relocation request to the base station, so that the base station reselects other nodes except the WiFi access point for relocation. At this time, the base station returns to step 301 to perform the relocation process again.
  • the UE establishes a connection with the WiFi access point according to the node information of the WiFi access point, and performs data transmission.
  • the UE after receiving the node information of the WiFi access point, the UE can establish a connection with the target WiFi access point after the underlying access handshake process, thereby performing data transmission.
  • the UE does not need to record the corresponding core network information, and only needs to know the information of the WiFi access point.
  • the process of establishing a connection between the UE and the WiFi access point is similar to the prior art, and is not described in this embodiment.
  • the data transmission process after the base station relocates the service to be transmitted is as follows:
  • the CN sends the downlink data to the base station point, and the base station transfers the downlink data to the WiFi access point, and the WiFi access point sends the downlink data to the UE;
  • the UE For the uplink data, the UE sends the uplink data to the WiFi access point, and the WiFi access point sends the data to the base station, and the base station sends the uplink data to the CN.
  • the method further includes: sending node information of the relocated WiFi access point to the CN, so that The CN sends the data of the to-be-transmitted service to the WiFi access point.
  • the CN, the WiFi access point, and the UE can directly transmit data without the need for base station forwarding.
  • the step 303-304 is performed by the source access network node transmitting the node information of the target node to the user equipment UE, so that the UE establishes a connection with the target node according to the node information of the target node, and performs the The step of referring to the data transmission of the transmission service.
  • an apparatus for transmitting data including:
  • a selecting unit 401 configured to select a target node in the pre-configured node
  • the sending unit 402 is configured to send, to the target node, a relocation request message, where the relocation request message is used to relocate data of the service to be transmitted to the target node;
  • the sending unit 402 is further configured to send the node information of the target node to the user equipment UE, so that the UE establishes a connection with the target node according to the node information of the target node, and performs data of the to-be-transmitted service. transmission.
  • the device further includes:
  • a first relocation unit configured to relocate data of the to-be-transmitted service to the target node when confirming that the quality of service QoS of the data to be transmitted is not met
  • a second relocation unit configured to relocate the data of the to-be-transmitted service to the target node when the BSR of the received buffer status report BSR is a preset format, where the BSR of the preset format is used And indicating that the data of the to-be-transmitted service of the UE exceeds a preset threshold.
  • the device further includes:
  • a first determining module configured to determine whether a received medium access control protocol data unit MAC PDU includes multiple BSR values, and if yes, confirms that the BSR of the preset format is received;
  • the second determining module is configured to determine whether multiple BSR values are received within a preset time interval, and if yes, confirm that the BSR of the preset format is received.
  • the relocation request message includes:
  • the number of data packets required to be transmitted by the target node generation is the number of data packets required to be transmitted by the target node generation
  • the length of time required for the target node to transmit data Acknowledgement of relocating transmission data of the UE to information of the target node, the transmission data including data of the service to be transmitted.
  • the sending unit is further configured to:
  • the node information of the target node is sent to the user equipment UE, the node information of the target node is sent to the core network, so that the core network sends the data of the to-be-transmitted service to the target node.
  • the device for transmitting data is a base station, and the target node is a wireless fidelity WIFI node.
  • the participation of the CN is not required, and the complexity of the process is reduced, so that when the service data rate fluctuates, the bearer can be quickly replaced according to the data rate, and the QoS of the data transmission is improved.
  • the device provided in this embodiment may be the same as the method embodiment, and the specific implementation process is described in detail in the method embodiment, and details are not described herein again.
  • Another embodiment of the present invention provides a base station, including: a processor and a transmitter.
  • the processor is configured to select a target node in a pre-configured node
  • the transmitter is configured to send a relocation request message to the target node, where the relocation request message is used to relocate data of a service to be transmitted to the target node;
  • the transmitter is further configured to send the node information of the target node to the user equipment UE, so that the UE establishes a connection with the target node according to the node information of the target node, and performs data transmission of the to-be-transmitted service.
  • the processor is further configured to:
  • the processor is further configured to: Determining whether a received medium access control protocol data unit MAC PDU includes multiple BSR values, and if yes, confirming that the BSR of the preset format is received; or
  • the relocation request message includes:
  • the number of data packets required to be transmitted by the target node generation is the number of data packets required to be transmitted by the target node generation
  • the transmitter is further configured to:
  • the node information of the target node is sent to the user equipment UE, the node information of the target node is sent to the core network, so that the core network sends the data of the to-be-transmitted service to the target node.
  • the target node is a wireless fidelity WIFI node.
  • the participation of the CN is not required, and the complexity of the process is reduced, so that when the service data rate fluctuates, the bearer can be quickly replaced according to the data rate, and the QoS of the data transmission is improved.
  • the base station provided by this embodiment may be the same as the method embodiment.
  • each module included is only divided according to functional logic, but is not limited to the above division, as long as the corresponding function can be implemented;
  • the specific names are also for convenience of distinguishing from each other and are not intended to limit the scope of the present invention.
  • the program may be For storage in a computer readable storage medium, the above mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

.La présente invention concerne un procédé et un dispositif de transmission de données, relatifs au domaine de la technologie des communications. Le procédé comprend : le nœud de réseau d'accès source sélectionne le nœud cible parmi les nœuds préconfigurés et envoie au nœud cible un message de requête de relocalisation, utilisé pour relocaliser les données du service à transmettre par le nœud de réseau d'accès source au nœud cible; le nœud de réseau d'accès source envoie les informations de nœud du nœud cible à l'équipement utilisateur (UE) afin de permettre à l'UE d'établir une connexion avec le nœud cible, en fonction des informations de nœud du nœud cible et de transmettre les données du service à transmettre. Le CN n'a pas besoin d'être impliqué dans l'invention, ce qui réduit la complexité de la procédure. Ainsi, lorsque le taux de données de service fluctue, les porteuses peuvent être changées rapidement, en fonction du taux de données et la QoS de la transmission de données est améliorée.
PCT/CN2013/077748 2012-06-27 2013-06-24 Procédé et dispositif de transmission de données Ceased WO2014000611A1 (fr)

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CN201210215673.XA CN103517447B (zh) 2012-06-27 2012-06-27 传输数据的方法和装置

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