WO2018024074A1 - 一种传输节点更换方法及相关设备 - Google Patents
一种传输节点更换方法及相关设备 Download PDFInfo
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- WO2018024074A1 WO2018024074A1 PCT/CN2017/092005 CN2017092005W WO2018024074A1 WO 2018024074 A1 WO2018024074 A1 WO 2018024074A1 CN 2017092005 W CN2017092005 W CN 2017092005W WO 2018024074 A1 WO2018024074 A1 WO 2018024074A1
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- 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
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/002—Transmission of channel access control information
- H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
Definitions
- the present disclosure relates to the field of communications technologies, and in particular, to a method for replacing a transit node and related devices.
- the future network can be understood as an ultra-dense network.
- the distance between transmission nodes is relatively close, and the frequency of switching between transmission nodes is large.
- UE User Equipment
- the transmission nodes generally interact through the X2 interface.
- the delay of the X2 interface is generally considered to be about 20 milliseconds. Therefore, the delay of the X2 interface switching is generally on the order of several tens of milliseconds, which causes a temporary drop in the data speed of the UE, and the layer 2 transmission state inside the UE needs to be reset. This will result in a reduced user experience and inefficient network transmission.
- the purpose of the disclosure is to provide a method for replacing a transmission node and related devices, which solves the problem that the network transmission efficiency is not high.
- an embodiment of the present disclosure provides a method for replacing a transit node, including: receiving, by a UE, a serving node replacement notification sent by a first source transmitting node, where the serving node replacement notification is used to notify the UE and a target transmission Establishing a connection, the target transmission node is one or more transmission nodes; the UE initiates a random access procedure to the target transmission node according to the service node replacement notification; the UE is maintained with one or more sources Transmitting a transmission configuration of the UE at the target transmission node with a target transmission node based on all or part of a layer 2 transmission state between the transmission nodes, wherein the one or more source transmission nodes include the a first source transmission node, and the source transmission node is a transmission node that the UE connects before receiving the service node replacement notification.
- the service node replacement notification is used to notify the UE to be transmitted by one or more sources. Transmitting a node to the target transmission node; or the serving node replacement notification is used to notify the UE to disconnect a part of the connected plurality of source transmission nodes and establish a connection with the target transmission node; Or the service node replacement notification is used to notify the UE to add the target transmission node based on the connected one or more source transmission nodes.
- the UE uses the UE to transmit the transmission configuration of the target transmission node to the target transmission node, while maintaining all or part of the layer 2 transmission state between the one or more source transmission nodes. And including: the UE transmitting, by using the UE, a transmission configuration of the target transmission node and a target transmission node, while maintaining a partial layer 2 transmission state with one or more source transmission nodes, where
- the partial layer 2 transmission state is that the indication information carried in the service node replacement notification indicates a layer 2 transmission state that needs to be maintained, or the partial layer 2 transmission state is a layer 2 transmission state that needs to be maintained by default.
- the method further includes: the UE performing a reset process on other layer 2 transmission states except the partial layer 2 transmission state.
- the transmitting, by using the UE, the transmission configuration of the target transmission node and the target transmission node includes: using, at a configuration time point, a transmission configuration of the UE at the target transmission node and a target transmission node. Performing transmission; or transmitting, when the random access procedure is successful, using the transmission configuration of the UE at the target transmission node with the target transmission node.
- the method further includes: receiving, by the UE, a transmission node configuration set sent by the network side device, where the transmission node configuration set A transmission configuration of the UE at a plurality of transmission nodes is included, wherein the plurality of transmission nodes include at least the target transmission node.
- the service node replacement notification includes a transmission configuration of the UE at the target transmission node, or the method further includes: if the network side device determines to determine that the UE establishes a connection with the target transmission node, The UE receives a transmission configuration of the UE that is sent by the network side device at the target transmission node.
- the service node replacement notification includes one or more of the following: the removal information of the service node set of the UE; the join information of the service node set of the UE; and the transmission configuration of the UE at the target transmission node.
- Data forwarding information the data forwarding information is used to indicate whether data forwarding is required;
- status indication information the status indication information is used to indicate whether the layer 2 needs to be maintained The transmission status, as well as all or part of the layer 2 transmission status indicating that it needs to be maintained.
- the receiving, by the UE, the service node replacement notification sent by the first source transmission node that: the UE receives a signaling sent by the first source transmission node, where the signaling includes the service node a notification of the replacement; wherein the signaling is Radio Resource Control (RRC) signaling, and the RRC signaling is sent by the centralized transmission node, and is forwarded by the first source transmission node to the air interface.
- RRC Radio Resource Control
- the layer 2 signaling is signaling self-organized by the first source transmission node according to the service node replacement information sent by the centralized transmission node; or the signaling For layer 1 signaling, the layer 1 signaling is signaling that the first source transmission node organizes itself according to the service node replacement information sent by the centralized transmission node.
- the centralized transmission node sends a service node replacement notification to the target transmission node and one or more source transmission nodes by using an interface message, where the service node replacement notification sent by the interface message includes one or more of the following: Item: the removal information of the service node set of the UE; the join information of the service node set of the UE; the measurement result of the UE; the transmission configuration of the UE at the target transmission node; the data forwarding information, the data forwarding The information is used to indicate whether data forwarding is required; status indication information is used to indicate whether it is necessary to maintain the layer 2 transmission status, and to indicate all or part of the layer 2 transmission status that needs to be maintained.
- Item the removal information of the service node set of the UE
- the join information of the service node set of the UE the measurement result of the UE
- the transmission configuration of the UE at the target transmission node the data forwarding information
- the information is used to indicate whether data forwarding is required
- status indication information is used to indicate whether it is necessary
- the target transmission node is a transmission node that accepts the UE after receiving the service node replacement request sent by the first source transmission node, and the target transmission node receives the first source after receiving Transmitting, by the transmitting node, a transmission configuration of the UE at the target transmission node, where the serving node replacement request includes one or more of: a measurement result of the UE; the UE is in one or more source transmission nodes Transmission configuration; data forwarding information, the data forwarding information is used to indicate whether data forwarding is required; status indication information, the status indication information is used to indicate whether it is necessary to maintain the layer 2 transmission status, and indicate that all needs to be maintained Or part of the layer 2 transmission status.
- the receiving, by the UE, the service node replacement notification sent by the first source transmission node that: the UE receives a signaling sent by the first source transmission node, where the signaling includes the a service node replacement notification, where the signaling is RRC signaling, and the RRC signaling is generated by the first source transmission node, and the transmission configuration sent by the target transmission node is placed in the form of a container.
- the layer 1 signaling is signaling that the first source transmission node organizes itself according to a transmission configuration sent by the target transmission node.
- the layer 2 transmission state maintained by the UE includes one or more of the following: a Hybrid Automatic Repeat ReQuest (HARQ) related transmission state; an acknowledgement mode (AM) transmission related state variable and Timer value; non-acknowledge mode (UM) transfer related state variables and timer values.
- HARQ Hybrid Automatic Repeat ReQuest
- AM acknowledgement mode
- UM non-acknowledge mode
- the state information of the layer 2 transmission state that is maintained by the UE is transmitted by the one or more source transmission nodes to the target transmission node; if data forwarding is required, the data that the UE needs to forward is performed by One or more source transport nodes are passed to the target transport node.
- the transmission state of the security-related layer of the UE during the transit node replacement process is maintained by default, and no reset is required.
- the embodiment of the present disclosure further provides a method for replacing a transit node, including: the target transmitting node receiving the UE initiates a random access procedure according to the serving node replacement notification, where the serving node replacement notification is used to notify the UE to establish with the target transit node. Connecting; using, based on all or part of a layer 2 transmission state between the UE and one or more source transmission nodes, the target transmission node using the UE's transmission configuration at the target transmission node and the The UE performs transmission, where the source transmission node is a transmission node that the UE connects before receiving the service node replacement notification.
- the target transmission node uses the UE's transmission configuration at the target transmission node and the Transmitting, by the UE, the target transmission node uses a transmission configuration of the UE at the target transmission node, and the foregoing, on a basis of maintaining a partial layer 2 transmission state between the UE and the source transmission node.
- the UE performs transmission, where the partial layer 2 transmission state is that the indication information carried in the service node replacement notification indicates that the layer 2 transmission state needs to be maintained, or the partial layer 2 transmission state is a layer 2 transmission that needs to be maintained by default. status.
- the target transmission node uses the transmission configuration of the UE in the target transmission node to transmit with the UE, including: at a configuration time point, the target transmission node uses the Transmitting configuration of the UE at the target transmission node with the UE; or when the random access procedure is successful, the target transmission node uses a transmission configuration of the UE at the target transmission node with the UE Transfer.
- the target transmission node is configured to receive, by the UE, a transmission node of a plurality of transmission nodes corresponding to a transmission node configuration set sent by the network side device, where the transmission node configuration set includes the UE in the multiple transmissions The transmission configuration of the node.
- the method further includes: the target transmission node receives a service node replacement notification sent by the centralized transmission node by using an interface message, where the service node replacement notification sent by the interface message includes one or more of the following: The migration information of the set of serving nodes of the UE; the joining information of the set of serving nodes of the UE; the measurement result of the UE; the transmission configuration of the UE at the target transmission node; the data forwarding information, the data forwarding The information is used to indicate whether data forwarding is required; status indication information is used to indicate whether it is necessary to maintain the layer 2 transmission status, and to indicate all or part of the layer 2 transmission status that needs to be maintained.
- the method further includes: the target transmission node receives a service node replacement request sent by the first source transmission node; the target transmission node determines whether to accept the service node replacement request, and if yes, The first source transmission node returns an acknowledgment message, and the acknowledgment message includes a transmission configuration of the UE at the target transmission node, where the service node replacement request includes one or more of the following: measurement of the UE Result: the transmission configuration of the UE at the source transmission node; data forwarding information, the data forwarding information is used to indicate whether data forwarding is required; status indication information, the status indication information is used to indicate whether maintenance is required Layer 2 transmission status, and all or part of the Layer 2 transmission status indicating that it needs to be maintained.
- the layer 2 transmission state maintained by the UE includes one or more of the following: a HARQ-related transmission state; an AM transmission-related state variable and a timer value; and a UM transmission-related state variable and a timer value. .
- the method further includes: the target transmission node receives state information of a layer 2 transmission state that is maintained by the UE by one or more source transmission nodes; if data forwarding is required, the method further includes: The target transmission node receives data that the one or more source transmission nodes transmit to the UE that need to be forwarded.
- the embodiment of the present disclosure further provides a method for replacing a transmission node, including: a first source transmission node
- the UE sends a service node replacement notification, where the service node replacement notification is used to notify the UE to establish a connection with the target transmission node, where the target transmission node is one or more transmission nodes, so that the UE is in accordance with the service.
- a node replacement notification initiating a random access procedure to the target transmission node, and using the UE in the presence of the UE to maintain all or part of a layer 2 transmission state with one or more source transmission nodes Transmitting a transmission configuration of the target transmission node to the target transmission node, wherein the target transmission node is one or more transmission nodes, the one or more source transmission nodes include the first source transmission node, and The source transport node is a transport node that the UE connects before receiving the service node replacement notification.
- the service node replacement notification is used to notify the UE to be replaced by the one or more source transmission nodes to the target transmission node; or the service node replacement notification is used to notify the UE to disconnect the connected a connection of a part of the plurality of source transmission nodes and establishing a connection with the target transmission node; or the service node replacement notification is used to notify the UE to add to the connected one or more source transmission nodes The target transmission node.
- the partial layer 2 transmission state is that the indication information carried in the service node replacement notification indicates a layer 2 transmission state that needs to be maintained, or the partial layer 2 transmission state is a layer 2 transmission state that needs to be maintained by default.
- the method further includes: the first source transmission node sending a transmission node configuration set to the UE, the transmission node configuration set A transmission configuration of the UE at a plurality of transmission nodes is included, wherein the plurality of transmission nodes include at least the target transmission node.
- the service node replacement notification includes a transmission configuration of the UE at the target transmission node, or the method further includes: if the first source transmission node determines that the UE establishes a connection with a target transmission node, The first source transmission node sends, to the UE, a transmission configuration of the UE at the target transmission node.
- the service node replacement notification includes one or more of the following: the removal information of the service node set of the UE; the join information of the service node set of the UE; the transmission configuration of the UE at the target transmission node; data forwarding Information, the data forwarding information is used to indicate whether data forwarding is required; status indication information, the status indication information is used to indicate whether it is necessary to maintain the layer 2 transmission status, and indicate all or part of the layer 2 transmission status that needs to be maintained. .
- the first source transmission node sends a service node replacement notification to the UE, where the first source transmission node sends a signaling to the UE, where the signaling includes the service node replacement notification
- the signaling is RRC signaling, and the RRC signaling is sent by the centralized transmission node, and is forwarded by the first source transmission node to the UE by air interface transmission; or the signaling is layer 2 signaling, the layer 2 signaling is signaling that is self-organized by the first source transmission node according to the service node replacement information sent by the centralized transmission node; or the signaling is layer 1 signaling, the layer 1 signaling And signaling that is self-organized by the first source transmission node according to the service node replacement information sent by the centralized transmission node.
- the method further includes: the first source transmission node receives a service node replacement notification sent by the centralized transmission node by using an interface message, where the service node replacement notification sent by the interface message includes one or more of the following: Item: the removal information of the service node set of the UE; the join information of the service node set of the UE; the measurement result of the UE; the transmission configuration of the UE at the target transmission node; the data forwarding information, the data The forwarding information is used to indicate whether data forwarding is required; status indication information is used to indicate whether it is necessary to maintain the layer 2 transmission status, and to indicate all or part of the layer 2 transmission status that needs to be maintained.
- Item the removal information of the service node set of the UE
- the join information of the service node set of the UE the measurement result of the UE
- the transmission configuration of the UE at the target transmission node the data forwarding information
- the forwarding information is used to indicate whether data forwarding is required
- status indication information is used to indicate whether it is
- the target transmission node is a transmission node that accepts the UE after receiving the service node replacement request sent by the first source transmission node, and the target transmission node receives the first source after receiving And transmitting, by the transmitting node, a transmission configuration of the UE at the target transmission node, where the serving node replacement request includes one or more of: a measurement result of the UE; and a transmission of the UE at the source transmission node Configuring; data forwarding information, the data forwarding information is used to indicate whether data forwarding is required; status indication information, the status indication information is used to indicate whether the layer 2 transmission status needs to be maintained, and all or part of the indication needs to be maintained Layer 2 transmission status.
- the first source transmission node sends a service node replacement notification to the UE, where the first source transmission node sends a signaling to the UE, where the signaling includes the service node replacement notification
- the signaling is RRC signaling, and the RRC signaling is generated by the first source transmission node, and the transmission configuration sent by the target transmission node is placed in the RRC signaling through a container.
- the first source transmission node performs air interface transmission and forwarding to the UE; or the signaling is layer 2 signaling, and the layer 2 signaling is that the first source transmission node is according to the target transmission node.
- the transmitted transmission configures self-organized signaling; or the signaling is layer 1 signaling,
- the layer 1 signaling is signaling that the first source transmission node organizes itself according to the transmission configuration sent by the target transmission node.
- the layer 2 transmission state maintained by the UE includes one or more of the following: a HARQ-related transmission state; an AM transmission-related state variable and a timer value; and a UM transmission-related state variable and a timer value. .
- the state information of the layer 2 transmission state that is maintained by the UE is transmitted by the one or more source transmission nodes to the target transmission node; if data forwarding is required, the data that the UE needs to forward is performed by One or more source transport nodes are passed to the target transport node.
- the embodiment of the present disclosure further provides a UE, including: a first receiving module, configured to receive a service node replacement notification sent by a first source transmission node, where the service node replacement notification is used to notify the UE and a target transmission node Establishing a connection, the target transmission node is one or more transmission nodes; an initiation module, configured to initiate a random access procedure to the target transmission node according to the service node replacement notification; and a transmission module, configured to maintain with one or And transmitting, by the UE, a transmission configuration of the target transmission node to a target transmission node, where the one or more source transmission nodes are transmitted, based on all or part of a layer 2 transmission state between the plurality of source transmission nodes
- the first source transmission node is included, and the source transmission node is a transmission node that the UE connects before receiving the service node replacement notification.
- the service node replacement notification is used to notify the UE to be replaced by the one or more source transmission nodes to the target transmission node; or the service node replacement notification is used to notify the UE to disconnect the connected a connection of a part of the plurality of source transmission nodes and establishing a connection with the target transmission node; or the service node replacement notification is used to notify the UE to add to the connected one or more source transmission nodes The target transmission node.
- the transmission module is configured to use the UE to transmit the transmission configuration of the target transmission node to the target transmission node while maintaining a partial layer 2 transmission state with the one or more source transmission nodes.
- the partial layer 2 transmission state is that the indication information carried in the service node replacement notification indicates a layer 2 transmission state that needs to be maintained, or the partial layer 2 transmission state is a layer 2 transmission state that needs to be maintained by default.
- the UE further includes: a reset module, configured to perform reset processing on other layer 2 transmission states except the partial layer 2 transmission state.
- a reset module configured to perform reset processing on other layer 2 transmission states except the partial layer 2 transmission state.
- the transmitting module is configured to use the transmission configuration of the UE at the target transmission node to transmit with a target transmission node at a configuration time point; or the transmission module is configured to succeed in the random access process. And transmitting, by using the UE, the transmission configuration of the target transmission node and the target transmission node.
- the UE further includes: a second receiving module, configured to receive a transmission node configuration set sent by the network side device, where the transmission node configuration set includes a transmission configuration of the UE in multiple transmission nodes, where The plurality of transmission nodes include at least the target transmission node.
- a second receiving module configured to receive a transmission node configuration set sent by the network side device, where the transmission node configuration set includes a transmission configuration of the UE in multiple transmission nodes, where The plurality of transmission nodes include at least the target transmission node.
- the service node replacement notification includes a transmission configuration of the UE in the target transmission node; or the UE further includes: a third receiving module, configured to determine, by the network side device, the UE and the target transmission The node establishes a connection, and receives a transmission configuration of the UE that is sent by the network side device at the target transmission node.
- the service node replacement notification includes one or more of the following: the removal information of the service node set of the UE; the join information of the service node set of the UE; and the transmission configuration of the UE at the target transmission node.
- Data forwarding information the data forwarding information is used to indicate whether data forwarding is required; status indication information, the status indication information is used to indicate whether it is necessary to maintain the layer 2 transmission status, and all or part of the indication needs to be maintained.
- Layer 2 transmission status is used to indicate whether it is necessary to maintain the layer 2 transmission status, and all or part of the indication needs to be maintained.
- the first receiving module is configured to receive a signaling sent by the first source transit node, where the signaling includes the serving node replacement notification, where the signaling is a radio resource control RRC
- the RRC signaling is sent by the centralized transmission node, and is forwarded by the first source transmission node to the UE by air interface transmission; or the signaling is layer 2 signaling, the layer 2 signaling And signaling that is self-organized by the first source transmission node according to the service node replacement information sent by the centralized transmission node; or the signaling is layer 1 signaling, where the layer 1 signaling is the first source transmission node according to The signaling of the service node replacement information sent by the centralized transmission node is self-organized.
- the centralized transmission node sends a service node replacement notification to the target transmission node and one or more source transmission nodes by using an interface message, where the service node replacement notification sent by the interface message includes one or more of the following: Item: the removal information of the service node set of the UE; the join information of the service node set of the UE; the measurement result of the UE; the transmission configuration of the UE at the target transmission node; the data forwarding information, the data forwarding The information is used to indicate whether data forwarding is required; status indication information, the status indication information is used to indicate whether it is necessary to maintain layer 2 The transmission status, as well as all or part of the layer 2 transmission status indicating that it needs to be maintained.
- the target transmission node is a transmission node that accepts the UE after receiving the service node replacement request sent by the first source transmission node, and the target transmission node receives the first source after receiving Transmitting, by the transmitting node, a transmission configuration of the UE at the target transmission node, where the serving node replacement request includes one or more of: a measurement result of the UE; the UE is in one or more source transmission nodes Transmission configuration; data forwarding information, the data forwarding information is used to indicate whether data forwarding is required; status indication information, the status indication information is used to indicate whether it is necessary to maintain the layer 2 transmission status, and indicate that all needs to be maintained Or part of the layer 2 transmission status.
- the first receiving module is configured to receive a signaling sent by the first source transmitting node, where the signaling includes the serving node replacement notification, where the signaling is RRC signaling
- the RRC signaling is generated by the first source transmission node, and the transmission configuration sent by the target transmission node is placed in the RRC signaling through a container, and the first source transmission node performs an air interface.
- the signaling is layer 2 signaling, and the layer 2 signaling is signaling that the first source transmission node organizes itself according to a transmission configuration sent by the target transmission node; or
- the signaling is layer 1 signaling, and the layer 1 signaling is signaling that the first source transmission node organizes itself according to a transmission configuration sent by the target transmission node.
- the layer 2 transmission state maintained by the UE includes one or more of the following: a HARQ-related transmission state; an AM transmission-related state variable and a timer value; and a UM transmission-related state variable and a timer value. .
- the state information of the layer 2 transmission state that is maintained by the UE is transmitted by the one or more source transmission nodes to the target transmission node; if data forwarding is required, the data that the UE needs to forward is performed by One or more source transport nodes are passed to the target transport node.
- the transmission state of the security-related layer of the UE during the transit node replacement process is maintained by default, and no reset is required.
- the embodiment of the present disclosure further provides a transmission node, where the transmission node is a target transmission node, and includes: a first receiving module, configured to receive, by the UE, a random access procedure according to the service node replacement notification, where the service node replacement notification And configured to notify the UE to establish a connection with a target transmission node, and a transmission module, configured to maintain all or one or more source transmission nodes between the UE or And transmitting, by the UE, a transmission configuration of the UE at the target transmission node to the UE, where the source transmission node is before the UE receives the service node replacement notification, based on a partial layer 2 transmission state.
- the connected transport node configured to receive, by the UE, a random access procedure according to the service node replacement notification, where the service node replacement notification And configured to notify the UE to establish a connection with a target transmission node
- a transmission module configured to maintain all or one or more source transmission nodes between the UE or And transmitting, by the
- the transmitting module is configured to use, by using, the UE, a transmission configuration of the UE at the target transmission node, and the UE, on a basis of maintaining a partial layer 2 transmission state between the UE and the source transmission node. Transmitting, wherein the partial layer 2 transmission state is that the indication information carried in the service node replacement notification indicates a layer 2 transmission state that needs to be maintained, or the partial layer 2 transmission state is a layer 2 transmission state that needs to be maintained by default. .
- the transmitting module is configured to use the UE to transmit with the UE in a transmission configuration of the target transmission node at a configuration time point; or the transmission module is configured to succeed in the random access process. And transmitting, by using the UE, a transmission configuration of the target transmission node with the UE.
- the target transmission node is configured to receive, by the UE, a transmission node of a plurality of transmission nodes corresponding to a transmission node configuration set sent by the network side device, where the transmission node configuration set includes the UE in the multiple transmissions The transmission configuration of the node.
- the transmitting node further includes: a second receiving module, configured to receive a service node replacement notification that is sent by the centralized transmission node by using an interface message, where the service node replacement notification sent by using the interface message includes the following: a plurality of: the removal information of the service node set of the UE; the join information of the service node set of the UE; the measurement result of the UE; the transmission configuration of the UE at the target transmission node; data forwarding information, the The data forwarding information is used to indicate whether data forwarding is required; status indication information is used to indicate whether it is necessary to maintain the layer 2 transmission status, and to indicate all or part of the layer 2 transmission status that needs to be maintained.
- a second receiving module configured to receive a service node replacement notification that is sent by the centralized transmission node by using an interface message, where the service node replacement notification sent by using the interface message includes the following: a plurality of: the removal information of the service node set of the UE; the join information of the service node set of the
- the transmitting node further includes: a third receiving module, configured to receive a service node replacement request sent by the first source transit node; and a returning module, configured to determine whether to accept the service node replacement request, and if yes, Returning an acknowledgment message to the first source transmission node, where the acknowledgment message includes a transmission configuration of the UE at the target transmission node, where the service node replacement request includes one or more of the following: The measurement result; the transmission configuration of the UE at the source transmission node; the data forwarding information, the data forwarding information is used to indicate whether data forwarding is required; the status indication information, the status indication information is used to indicate whether Need to keep the layer 2 transmission state, And indicating all or part of the layer 2 transmission state that needs to be maintained.
- a third receiving module configured to receive a service node replacement request sent by the first source transit node
- a returning module configured to determine whether to accept the service node replacement request, and if yes, Returning an acknowledgment message to the first source transmission node, where the acknowledg
- the layer 2 transmission state maintained by the UE includes one or more of the following: a HARQ-related transmission state; an AM transmission-related state variable and a timer value; and a UM transmission-related state variable and a timer value. .
- the transmitting node further includes: a fourth receiving module, configured to receive status information of a layer 2 transmission state that is maintained by the UE by one or more source transmission nodes; if data forwarding is required, The transmitting node further includes: a fifth receiving module, configured to receive data that the one or more source transmitting nodes send the UE that needs to be forwarded.
- the embodiment of the present disclosure further provides a transmission node, where the transmission node is a first source transmission node, and includes: a first sending module, configured to send a service node replacement notification to the UE, where the service node replacement notification is used for notification Establishing, by the UE, a connection with a target transmission node, where the target transmission node is one or more transmission nodes, so that the UE initiates a random access procedure to the target transmission node according to the service node replacement notification, and Transmitting, by the UE, all or part of a layer 2 transmission state between the UE and the one or more source transmission nodes, using the transmission configuration of the UE at the target transmission node to transmit with the target transmission node, where
- the target transmission node is one or more transmission nodes, the one or more source transmission nodes include the first source transmission node, and the source transmission node is connected to the UE before receiving the service node replacement notification Transfer node.
- the service node replacement notification is used to notify the UE to be replaced by the one or more source transmission nodes to the target transmission node; or the service node replacement notification is used to notify the UE to disconnect the connected a connection of a part of the plurality of source transmission nodes and establishing a connection with the target transmission node; or the service node replacement notification is used to notify the UE to add to the connected one or more source transmission nodes The target transmission node.
- the partial layer 2 transmission state is that the indication information carried in the service node replacement notification indicates a layer 2 transmission state that needs to be maintained, or the partial layer 2 transmission state is a layer 2 transmission state that needs to be maintained by default.
- the transmitting node further includes: a second sending module, configured to send, to the UE, a transport node configuration set, where the transport node configuration set includes a transmission configuration of the UE in multiple transport nodes, where The plurality of transmission nodes include at least the target transmission node.
- a second sending module configured to send, to the UE, a transport node configuration set, where the transport node configuration set includes a transmission configuration of the UE in multiple transport nodes, where The plurality of transmission nodes include at least the target transmission node.
- the service node replacement notification includes a transmission configuration of the UE at the target transmission node, or the transmission node further includes: a third sending module, configured to determine, if the first source transmission node determines a notification The UE establishes a connection with the target transmission node, and sends a transmission configuration of the UE to the target transmission node to the UE.
- a third sending module configured to determine, if the first source transmission node determines a notification The UE establishes a connection with the target transmission node, and sends a transmission configuration of the UE to the target transmission node to the UE.
- the service node replacement notification includes one or more of the following: the removal information of the service node set of the UE; the join information of the service node set of the UE; and the transmission configuration of the UE at the target transmission node.
- Data forwarding information the data forwarding information is used to indicate whether data forwarding is required; status indication information, the status indication information is used to indicate whether it is necessary to maintain the layer 2 transmission status, and all or part of the indication needs to be maintained.
- Layer 2 transmission status is used to indicate whether it is necessary to maintain the layer 2 transmission status, and all or part of the indication needs to be maintained.
- the first sending module is configured to send a signaling to the UE, where the signaling includes the serving node replacement notification, where the signaling is a radio resource control RRC signaling, where The RRC signaling is sent by the centralized transmission node, and is forwarded by the first source transmission node to the UE by air interface transmission; or the signaling is layer 2 signaling, and the layer 2 signaling is The first source transmission node self-organizes signaling according to the service node replacement information sent by the centralized transmission node; or the signaling is layer 1 signaling, and the layer 1 signaling is the first source transmission node according to the centralized transmission node The service node that sends the message replaces the self-organized signaling.
- RRC signaling radio resource control RRC signaling
- the RRC signaling is sent by the centralized transmission node, and is forwarded by the first source transmission node to the UE by air interface transmission; or the signaling is layer 2 signaling, and the layer 2 signaling is The first source transmission node self-organizes
- the transmitting node further includes: a receiving module, configured to receive a service node replacement notification sent by the centralized transit node by using an interface message, where the service node replacement notification sent by the interface message includes one or more of the following: : the removal information of the service node set of the UE; the join information of the service node set of the UE; the measurement result of the UE; the transmission configuration of the UE at the target transmission node; the data forwarding information, the data before The transfer information is used to indicate whether data forwarding is required; status indication information is used to indicate whether it is necessary to maintain the layer 2 transmission status, and to indicate all or part of the layer 2 transmission status that needs to be maintained.
- a receiving module configured to receive a service node replacement notification sent by the centralized transit node by using an interface message, where the service node replacement notification sent by the interface message includes one or more of the following: : the removal information of the service node set of the UE; the join information of the service node set of the UE; the measurement result of the
- the target transmission node is a transmission node that accepts the UE after receiving the service node replacement request sent by the first source transmission node, and the target transmission node receives the first source after receiving And transmitting, by the transmitting node, a transmission configuration of the UE at the target transmission node, where the serving node replacement request includes one or more of: a measurement result of the UE; and a transmission of the UE at the source transmission node Configuration; data forwarding information, the data forwarding information is used to indicate whether data forwarding is required; status indication information, the status indication information is used to indicate whether it is needed
- the layer 2 transmission state is maintained, and all or part of the layer 2 transmission state that needs to be maintained is indicated.
- the first sending module is configured to send a signaling to the UE, where the signaling includes the serving node replacement notification, where the signaling is RRC signaling, and the RRC signaling And causing the transmission configuration sent by the target transmission node to be placed in the RRC signaling by the first source transmission node, and performing air interface transmission and forwarding by the first source transmission node to the Or the signaling is layer 2 signaling, and the layer 2 signaling is signaling that is self-organized by the first source transmission node according to a transmission configuration sent by the target transmission node; or the signaling is Layer 1 signaling, the layer 1 signaling is signaling that the first source transmission node organizes itself according to a transmission configuration sent by the target transmission node.
- the layer 2 transmission state maintained by the UE includes one or more of the following: a HARQ-related transmission state; an AM transmission-related state variable and a timer value; and a UM transmission-related state variable and a timer value. .
- the state information of the layer 2 transmission state that is maintained by the UE is transmitted by the one or more source transmission nodes to the target transmission node; if data forwarding is required, the data that the UE needs to forward is performed by One or more source transport nodes are passed to the target transport node.
- the embodiment of the present disclosure further provides a user terminal UE, including: a processor, a transceiver, and a memory, wherein: the processor is configured to read a program in the memory, and execute the following process: receiving, by the transceiver, the first source transmission node to send Service node replacement notification, wherein the service node replacement notification is used to notify the UE to establish a connection with a target transmission node, the target transmission node is one or more transmission nodes; and the notification is replaced by the transceiver according to the service node Initiating a random access procedure to the target transport node; using the UE at the target by a transceiver while maintaining all or part of a layer 2 (L2) transmission state with one or more source transport nodes
- L2 layer 2
- An embodiment of the present disclosure further provides a transmission node, including: a processor, a transceiver, and a memory, wherein: the processor is configured to read a program in the memory, and execute the following process: receiving, by the transceiver, the user terminal, the UE, replacing according to the service node Notifying that a random access procedure is initiated, wherein the serving node replacement notification is used to notify the UE to establish a connection with a target transit node; Transmitting a transmission configuration of the UE at the target transmission node to the UE using a transmission configuration of the UE or all of the layer 2 transmission states, wherein the source transmission node is A transmitting node that is connected to the UE before receiving the service node replacement notification, and the transceiver is configured to receive and transmit data.
- the processor is configured to read a program in the memory, and execute the following process: receiving, by the transceiver, the user terminal, the UE, replacing according to the service node Notifying that a random access procedure is initiated
- the embodiment of the present disclosure further provides a transmission node, including: a processor, a transceiver, and a memory, wherein: the processor is configured to read a program in the memory, and execute the following process: sending a service node replacement to the user terminal UE by using the transceiver a notification, wherein the service node replacement notification is used to notify the UE to establish a connection with a target transmission node, where the target transmission node is one or more transmission nodes, so that the UE according to the service node replacement notification Determining, by the target transmitting node, a random access procedure, and using, by the UE, all or part of a layer 2 transmission state between the one or more source transmitting nodes, using the UE at the target transmitting node
- the transmission configuration is transmitted with the target transmission node, wherein the target transmission node is one or more transmission nodes, the one or more source transmission nodes include the first source transmission node, and the source transmission node is a transmitting node that is connected to the
- the UE receives a service node replacement notification sent by the first source transmission node, where the service node replacement notification is used to notify the UE and the target transmission node.
- Establishing a connection the UE initiating a random access procedure to the target transit node according to the serving node replacement notification; and the base of the UE maintaining all or part of a layer 2 transmission state with one or more source transport nodes And transmitting, by using the UE, the transmission configuration of the target transmission node and the target transmission node.
- the UE and the target transmission node can be transmitted on the basis of the transmission state that is maintained.
- the transmission layer of the reset layer 2 is required, and the embodiment of the present disclosure can improve the network transmission efficiency.
- FIG. 1 is a schematic diagram of a network structure applicable to an embodiment of the present disclosure
- FIG. 2 is a schematic flowchart of a method for replacing a transmission node according to an embodiment of the present disclosure
- FIG. 3 is a schematic flowchart diagram of another method for replacing a transmission node according to an embodiment of the present disclosure
- FIG. 4 is a schematic flowchart diagram of another method for replacing a transmission node according to an embodiment of the present disclosure
- FIG. 5 is a schematic diagram of another method for replacing a transmission node according to an embodiment of the present disclosure
- FIG. 6 is a schematic diagram of another method for replacing a transmission node according to an embodiment of the present disclosure.
- FIG. 7 is a schematic structural diagram of a UE according to an embodiment of the present disclosure.
- FIG. 8 is a schematic structural diagram of another UE according to an embodiment of the present disclosure.
- FIG. 9 is a schematic structural diagram of another UE according to an embodiment of the present disclosure.
- FIG. 10 is a schematic structural diagram of another UE according to an embodiment of the present disclosure.
- FIG. 11 is a schematic structural diagram of a transmission node according to an embodiment of the present disclosure.
- FIG. 12 is a schematic structural diagram of another transmission node according to an embodiment of the present disclosure.
- FIG. 13 is a schematic structural diagram of another transmission node according to an embodiment of the present disclosure.
- FIG. 14 is a schematic structural diagram of another transmission node according to an embodiment of the present disclosure.
- FIG. 15 is a schematic structural diagram of another transmission node according to an embodiment of the present disclosure.
- FIG. 16 is a schematic structural diagram of another transmission node according to an embodiment of the present disclosure.
- FIG. 17a is a schematic structural diagram of another transmission node according to an embodiment of the present disclosure.
- FIG. 17b is a schematic structural diagram of another transmission node according to an embodiment of the present disclosure.
- FIG. 18 is a schematic structural diagram of another UE according to an embodiment of the present disclosure.
- FIG. 19 is a schematic structural diagram of another transmission node according to an embodiment of the present disclosure.
- FIG. 20 is a schematic structural diagram of another transmission node according to an embodiment of the present disclosure.
- FIG. 1 is a schematic diagram of a network structure applicable to an embodiment of the present disclosure.
- the UE 11 includes a UE 11 , a source transmission node 12 , a target transmission node 13 , and a network side device 14 , where the UE 11 may be a mobile phone.
- Terminals such as Tablet Personal Computer, Laptop Computer, Personal Digital Assistant (PDA), Mobile Internet Device (MID), or Wearable Device
- PDA Personal Digital Assistant
- MID Mobile Internet Device
- Wearable Device The side device, it should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present disclosure.
- the above-mentioned source transmission node 12 may be a transmission node that has established a connection with the UE 11, and may be one or more source transmission nodes, one of which is exemplified in the drawing.
- the target transmission node 13 is a transmission node that needs to establish a connection after the UE 11 receives the service node replacement notification, and may also be one or more transmission nodes, and one of the drawings is exemplified.
- the network side device 14 may be A Central Unit (CU), or the network side device 14 described above, may be one of the one or more source transport nodes 12 of the UE 11.
- CU Central Unit
- a transit node may be understood as a transport and send node (TRP), which may be a transport node having a complete protocol, such as a base station, or the node may have only layer 1 and/or layer.
- TRP transport and send node
- the transmission node of 2 may of course be a transmission node having layer 3 or the like. It should be noted that the specific type of the transmission node is not limited in the embodiment of the present disclosure.
- an embodiment of the present disclosure provides a method for replacing a transit node. As shown in FIG. 2, the method includes the following steps: 201: A UE receives a service node replacement notification sent by a first source transit node, where the service node is replaced.
- the notification is used to notify the UE to establish a connection with the target transmission node, where the target transmission node is one or more transmission nodes; 202, the UE initiates a random access procedure to the target transmission node according to the service node replacement notification; Transmitting, by the UE, the transmission configuration of the UE at the target transmission node and the target transmission node, where the UE maintains all or part of the layer 2 transmission state between the one or more source transmission nodes, where the The one or more source transport nodes include the first source transport node, and the source transport node is a transport node that the UE connects before receiving the service node replacement notification.
- the first source transmission node may be any one of the one or more source transmission nodes of the UE.
- the foregoing target transmission node may be one or more transmission nodes, that is, the foregoing service node replacement notification is used to notify the UE to establish a connection with the one or more transmission nodes.
- the service node replacement notification may also notify the UE to disconnect one or more source transmission nodes.
- the disconnected source transmission node may be all or part of the source transmission node to which the UE is connected.
- the UE may initiate a random access procedure to establish a connection with the target transit node.
- the UE may initiate a random access procedure to the target transit node according to a pre-configured or dedicated random access code (Preamble) carried in the foregoing notification, to initiate synchronous access to the target transport node.
- Preamble a pre-configured or dedicated random access code
- establishing the connection between the UE and the target transmission node may be determined by the network side device. And the network side device sends a notification to the first source transmission node to notify the UE to establish a connection with the target transmission node, and the first source transmission node may send the service in step 201 to the UE when receiving the notification. Node replacement notification.
- the network side device may be the foregoing first source transmission node, or the network side device may be a centralized transmission node.
- the foregoing UE may perform transmission using the UE in the transmission configuration of the target transmission node and the target transmission node, while maintaining the transmission state of all or part of the layer 2 between the UE and the one or more source transmission nodes.
- the layer 2 transmission state that the UE needs to maintain may be pre-configured or indicated in the service node replacement notification described above. Or the foregoing UE may perform transmission on the transmission configuration of the target transmission node with the target transmission node, based on maintaining all or part of the layer 2 transmission state between the UE and the one or more source transmission nodes. Maintaining continuity of layer 2 transmission status information, the target transmission node can provide a contiguous transmission service based on the latest UE layer 2 transmission status. This avoids the reset of all state information of the UE and the decrease of the transmission rate, and ultimately improves the network transmission efficiency and the user experience.
- the maintained layer 2 transmission state may be state information of a layer 2 HARQ or higher function.
- the transit node connected to the UE can also be understood as the serving node of the UE.
- the serving node of the UE includes the foregoing source transport node before receiving the notification, and the UE serves when the UE establishes a connection with the target transport node.
- the node includes the above-mentioned target transmission node.
- the serving node of the UE since the foregoing notification may be to notify the UE to increase the target transmission node, or only modify part of the service node, that is, after the UE establishes a connection with the target transmission node, the serving node of the UE may include the target transmission node, and may also include the source transmission without transformation. node.
- the service node replacement notification is used to notify the UE to be replaced by the one or more source transmission nodes to the target transmission node;
- the service node replacement notification is used to notify the UE to disconnect a part of the connected plurality of source transmission nodes and establish a connection with the target transmission node;
- the service node replacement notification is used to notify the UE to add the target transmission node based on one or more source transmission nodes that have been connected.
- the UE is replaced by one or more source transmission nodes to the target transmission node may be understood as: the UE switches from the one or more source transmission nodes to the target transmission node, where the one or more sources
- the transit node may be all transport nodes that the UE has connected before receiving the above notification.
- the foregoing UE disconnects a connection of a part of the connected ones of the plurality of source transmission nodes, and establishes a connection with the target transmission node, where the UE abandons or deletes some of the source transmission nodes of the connected plurality of source transmission nodes.
- Connection and establish a connection with the above target transport node For example, the source transmission node of the UE includes the node 1 and the node 2, and the target transmission node is the node 3 and the node 4, and the notification is used to notify the UE to disconnect the node 1, so that the UE receives the notification, the UE
- the connection with node 1 is broken or deleted, and a connection is established with node 3 and node 4, and the connection with node 2 is maintained.
- the foregoing UE may add the target transmission node to the connected one or more source transmission nodes, and the UE may keep all connected source transmission nodes and establish a connection with the target transmission node.
- the foregoing UE uses the transmission configuration of the UE at the target transmission node to transmit with the target transmission node, while maintaining all or part of the layer 2 transmission state between the UE and the one or more source transmission nodes.
- the transmission status is that the indication information carried in the service node replacement notification indicates the layer 2 transmission status that needs to be maintained, or the partial layer 2 transmission status is the layer 2 transmission status that needs to be maintained by default.
- the UE may only maintain a partial layer 2 transmission state with the one or more source transmission nodes, and perform transmission with the target transmission node based on the maintained layer 2 transmission state.
- the partial layer 2 transmission state may be a layer 2 transmission state that needs to be maintained by default, wherein the layer 2 transmission state that needs to be maintained by default may be pre-configured.
- the partial layer 2 transmission state may be an indication indication information carried in the service node replacement notification, that is, which layer 2 The transmission state needs to be maintained by the above network side device.
- the method further includes: performing, by the UE, a reset process on another layer 2 transmission state except the partial layer 2 transmission state.
- the UE resets the L2 transmission state, restarts from the initial value, and the target transmission node newly establishes the L2 entity, also starting from the initial value.
- the L2 transmission state may also be partially reset, partially maintained, for example, a MAC state reset, and a Radio Link Control (RLC) state is maintained.
- RLC Radio Link Control
- the transmission state of the security-related layer of the UE during the transit node replacement process is maintained by default, and no reset is required.
- the related operations and states of the Packet Data Convergence Protocol (PDCP) layer need to be maintained.
- PDCP Packet Data Convergence Protocol
- the transmitting, by using the UE, the transmission configuration of the target transmission node and the target transmission node includes: using, at a configuration time point, a transmission configuration of the UE at the target transmission node and a target transmission node. Performing transmission; or transmitting, when the random access procedure is successful, using the transmission configuration of the UE at the target transmission node with the target transmission node.
- the configuration time point may be configured in the service node replacement notification, or the network side device is pre-configured to the UE. Through the configuration time point, synchronization between the UE and the target transmission node can be started at a specific time point. In addition, in this implementation manner, the time point between the UE and the target transit node with the success of the random access procedure as the synchronization of the new configuration may be implemented.
- the method further includes: receiving, by the UE, a transmission node configuration set sent by the network side device, where the transmission node configuration set A transmission configuration of the UE at a plurality of transmission nodes is included, wherein the plurality of transmission nodes include at least the target transmission node.
- the network side device may be a centralized transmission node or the first source transmission node
- the foregoing transmission node configuration set may be a transmission configuration of a transmission node that can provide services for the UE, that is, by using the foregoing transmission node configuration set.
- a transmission section that may provide services to the UE The relevant transmission configuration of the point is configured to the UE for dynamic selection.
- the foregoing transmission node configuration set may be determined by any one or more of the following manners:
- the network side device selects and satisfies the receiving strength of each uplink node according to the uplink signal of the UE, for example, a random access channel (RACH) random access code (Preamble) or other uplink signals, such as an uplink pilot signal.
- RACH random access channel
- Preamble random access code
- the network side device may further determine a transmission node configuration set for the UE according to the current service transmission node of the UE and the physical location of the neighboring transmission node deployed around the service transmission node, optionally considering the prediction of the UE's movement trajectory.
- the foregoing transmission node configuration set may include one or more of the following: a transmission node identifier, a transmission node related transmission configuration, an antenna configuration of the transmission node, and a physical layer configuration of the transmission node.
- a small layer configuration for example, a timer, etc.
- a UE-specific resource configuration related to the transmission node may be included, for example, a dedicated uplink control channel configuration reserved for the UE, an uplink Preamble, and the like.
- the transmission node configuration set may further include a measurement related configuration, such as what parameters, filter factors, reporting periods, and trigger conditions are adopted for the measurement of the transmission node in the configuration set.
- a measurement related configuration such as what parameters, filter factors, reporting periods, and trigger conditions are adopted for the measurement of the transmission node in the configuration set.
- the active transport node may be understood as the transport node currently serving the UE.
- the foregoing transmission node configuration set may also be changed. For example, after the UE enters the connection state, there is an initial configuration of the transmission node configuration set, and it is not excluded that only the UE currently serves the transmission node in the configuration set. That is, there may be a transmission configuration of only one transmission node in the collection; subsequently, according to the continuous collection of measurement results, the network side device may add a new transmission node that satisfies the transmission requirement to the configuration set; or may be remote or transmitted according to the location of the UE.
- the state of the node itself such as the load is too high or the coverage adjustment is even closed due to energy saving, etc., and the configuration of the TRP that no longer satisfies the candidate transmission requirement is deleted from the configuration set; when the UE performs state transition, for example, from the connected state to the idle state Or in the inactive state, the network side device can use the UE The set of transport node configurations is removed.
- the criterion for the determination is slightly loose. For example, even if a certain transmission node is not currently the best channel condition of the UE, it may not participate in the data transmission of the UE immediately, but it may be transmitted later, or the transmission node may be added to the configuration set to facilitate the UE to move. When the distance to the transmission node is close, the transmission node can be directly used for the transmission exemption configuration process.
- the transmission node configuration set is an alternative UE service set, and the transmission node currently serving the UE may only occupy part of the transmission node.
- the foregoing UE may also obtain the foregoing transmission node configuration set by using an L3, that is, an RRC signaling process.
- L3 that is, an RRC signaling process.
- the foregoing transmission node configuration set may also be obtained through layer 1 or layer 2 signaling.
- the foregoing service node replacement notification includes a transmission configuration of the UE at the target transmission node.
- the method further includes: if the network side device determines that the UE establishes a connection with the target transmission node, the UE receives a transmission configuration of the UE that is sent by the network side device at the target transmission node.
- the UE may separately configure the transmission configuration of the UE at the target transmission node. For example, after the UE enters the connected state, the network side device configures the UE-specific measurement, and measures the current serving transport node (ie, the source transport node) and the neighbor transport node of the UE; when the signal quality of the transport node currently served by the UE is deteriorated or When the signal quality of the neighboring transmission node becomes good, the UE reports the corresponding measurement result to the network side device, and the network side device reconfigures the current serving transmission node of the UE, and transmits the new transmission node (ie, the target transmission node). The configuration is sent to the UE, the configuration of the old transmission node is deleted, and the UE starts working at the new transmission node (ie, the above-mentioned target transmission node).
- the network side device configures the UE-specific measurement, and measures the current serving transport node (ie, the source transport node) and the neighbor transport node of the UE
- the behavior of replacing the transit node may also be triggered by other factors.
- the network side device may find that the original serving cell of the UE is too heavy, or needs to change the coverage, and needs to be temporarily shut down due to energy saving, etc., and the network side device may Self-triggering replaces the serving transport node and the transport-related configuration for the UE.
- the UE receives the transmission configuration of the UE at the target transmission node that is sent by the network side device.
- the solution is that if the network side device measures that the target transmission node satisfies the requirement for providing the UE, the UE transmits the transmission configuration of the UE to the target transmission node.
- the UE has only one service transmission node.
- the UE may have multiple source transmission nodes, and the target transmission node may also be multiple.
- the specific process is similar and the examples are not repeated.
- the network side device determines that the current service transmission node set (ie, multiple source transmission nodes) has a transit node that is no longer suitable for serving according to the measurement result report or the status of the transmission node, it may delete it when there is a new one.
- the transmission node satisfies the service requirement, and the new transmission node and its configuration can be configured to the UE through the above notification or other signaling.
- the deletion and addition process can be performed simultaneously or separately.
- the transmission configuration of the target transmission node may be obtained by the L3, that is, the RRC signaling process, to obtain the transmission node configuration set.
- the transmission configuration of the upper target transmission node may also be obtained through layer 1 or layer 2 signaling.
- the service node replacement notification includes one or more of the following: the removal information of the service node set of the UE; the join information of the service node set of the UE; and the transmission configuration of the UE at the target transmission node.
- Data forwarding information the data forwarding information is used to indicate whether data forwarding is required; status indication information, the status indication information is used to indicate whether it is necessary to maintain the layer 2 transmission status, and all or part of the indication needs to be maintained.
- Layer 2 transmission status is used to indicate whether it is necessary to maintain the layer 2 transmission status, and all or part of the indication needs to be maintained.
- the foregoing set of service nodes may be understood as a set of transport nodes that provide services by the UE.
- the set of service nodes includes a source transport node of the UE before the service node is replaced, and the set of service nodes includes the service node after the service node is replaced.
- the UE does not have the deleted source transport node and the above-mentioned target transport node.
- the above-mentioned removal information can be understood as which source transmission nodes are moved out of the service node set, and the removed source transmission node disconnects from the UE.
- the above-mentioned join information can be understood as which transport node is added to the set of service nodes, that is, the set of service nodes that join the above-mentioned target transport node to the UE.
- the receiving, by the UE, the service node replacement notification sent by the first source transmission node that: the UE receives a signaling sent by the first source transmission node, where the signaling includes the service node And the signaling is RRC signaling, where the RRC signaling is sent by the centralized transmission node, and is forwarded by the first source transmission node to the UE by air interface transmission; or the signaling For Layer 2 signaling, the Layer 2 signaling is based on the centralized transmission of the first source transmission node.
- the signaling of the service node replacement information sent by the transmission node is self-organized; or the signaling is layer 1 signaling, and the layer 1 signaling is that the first source transmission node performs the service node replacement information according to the centralized transmission node.
- Organizational signaling is
- the foregoing centralized transmission node may be understood as a network side device, for example, a network side device that determines a connection between a UE and a target transmission node.
- the service node replacement notification may be received through RRC signaling, L2 signaling, or L1 signaling.
- the layer 1 signaling is a physical layer command, that is, the UE is notified to initiate a random access procedure by using the command, and the service node replacement notification may include an ID of the target transmission node or a beam ID and a random access code under the target transmission node. Preamble) and random access time-frequency resources (PRACH resources).
- the service node replacement notification may only need to inform the UE of the identity or other simple information of the target transmission node.
- the transmission configuration of the UE at the target transmission node may not be included, and the service node replacement notification notifies the UE by using L2 signaling or L1 signaling.
- the foregoing notification needs to include the transmission configuration of the UE in the target transmission node, for example, configuring a complete transmission configuration of the target TRP for the UE, and the The notification can be notified through RRC signaling, so that the transmission configuration of the notification is more secure.
- the centralized transmission node sends a service node replacement notification to the target transmission node and one or more source transmission nodes by using an interface message, where the service node replacement notification sent by the interface message includes one or more of the following: Item: the removal information of the service node set of the UE; the join information of the service node set of the UE; the measurement result of the UE; the transmission configuration of the UE at the target transmission node; the data forwarding information, the data forwarding The information is used to indicate whether data forwarding is required; status indication information is used to indicate whether it is necessary to maintain the layer 2 transmission status, and to indicate all or part of the layer 2 transmission status that needs to be maintained.
- Item the removal information of the service node set of the UE
- the join information of the service node set of the UE the measurement result of the UE
- the transmission configuration of the UE at the target transmission node the data forwarding information
- the information is used to indicate whether data forwarding is required
- status indication information is used to indicate whether it is necessary
- the above-mentioned centralized transmission node can be understood as a network side device, for example, a network side device that determines that the UE establishes a connection with the target transmission node.
- the foregoing service node replacement notification that the centralized transmission node may send to the source transmission node and the target transmission node may be the same as or different from the content of the notification received in step 201.
- the above measurement result may be a measurement including a transmission channel strength or a transmission channel quality.
- the measurement result may be for the above-described target transmission node, and may also include the measurement result of the above-described source transmission node.
- the centralized transmission node may further send the service node replacement notification to the target transmission node and the source transmission node, so that the service node change may be sent by the centralized transmission node to each of the involved transmission nodes.
- the target transmission node is a transmission node that accepts the UE after receiving the service node replacement request sent by the first source transmission node, and the target transmission node is after receiving Returning, to the first source transmission node, a transmission configuration of the UE at the target transmission node;
- the service node replacement request includes one or more of the following: a measurement result of the UE; a transmission configuration of the UE in one or more source transmission nodes; data forwarding information, and the data forwarding information is used. Indicates whether data forwarding is required; status indication information for indicating whether it is necessary to maintain the layer 2 transmission status, and indicating all or part of the layer 2 transmission status that needs to be maintained.
- the first source transmission node may be understood as a network side device, or the UE may establish a connection with the target transmission node, which may be determined by the first source transmission node.
- the UE is a source transmission node, and then the source transmission node is the above network side device.
- the first source transmission node may be the preferred network source device, that is, one of the source transmission nodes is preferably used as the network side device, and the subsequent process is performed.
- the first source transmission node may be that the air interface channel quality to the UE is better, or the backhaul link quality is better, or the UE complete information is saved, or the service TRP as the UE may still be retained after the update. Node.
- the service node replacement request may be sent to the target transmission node, and after the target transmission node accepts the replacement, the replacement procedure is initiated.
- the transmission configuration of the UE returned by the target transmission node to the source transmission node at the target transmission node may include a dedicated Preamble or other configuration of the UE at the target transmission node.
- the transmission configuration of the UE returned by the target transmission node to the source transmission node may include only a partial configuration, or a packet. The configuration not included in the above-mentioned transmission node configuration set is included.
- the decision of the replacement is made by the source transit node, instead of being reported to the CU for centralized processing, so that the replacement of the service node can be quickly implemented, and the signaling is simple and the delay is small.
- the receiving, by the UE, the serving node replacement notification that is sent by the first source transmission node includes: receiving, by the UE, a signaling sent by the first source transmission node, where The signaling includes the service node replacement notification, where the signaling is RRC signaling, and the RRC signaling is generated by the first source transmission node, and the transmission configuration sent by the target transmission node is used to pass through a container.
- the form is placed in the RRC signaling, and is forwarded by the first source transmitting node to the UE by air interface transmission; or the signaling is layer 2 signaling, and the layer 2 signaling is the first
- the source transmission node configures self-organized signaling according to the transmission configuration sent by the target transmission node; or the signaling is layer 1 signaling, and the layer 1 signaling is that the first source transmission node is according to the target transmission node.
- the transmitted transmission configures self-organizing signaling.
- the first source transmission node may be understood as a network side device, or the UE may establish a connection with the target transmission node, which may be determined by the first source transmission node.
- the layer 1 signaling is a physical layer command, that is, the UE is notified to initiate a random access procedure by using the command, and the service node replacement notification may include an ID of the target transmission node or a beam ID and a random access code under the target transmission node. Preamble) and random access time-frequency resources (PRACH resources).
- the service node replacement notification may only need to inform the UE of the identity of the target transmission node or other simple information.
- the transmission configuration of the UE at the target transmission node may not be included, and the foregoing service node replacement notification notifies the UE by using L2 signaling or L1 signaling.
- the foregoing notification needs to include the transmission configuration of the UE in the target transmission node, for example, configuring a complete transmission configuration of the target TRP for the UE, and the The notification can be notified through RRC signaling, so that the transmission configuration of the notification is more secure.
- the layer 2 transmission state maintained by the foregoing UE includes one or more of the following: a HARQ-related transmission state; an AM transmission-related state variable and a timer value; and a UM transmission-related State variables and timer values.
- the state information of the layer 2 transmission state maintained by the UE is delivered by the one or more source transmission nodes to the target transmission node; if data forwarding is required, the UE needs to forward the data by using one Or a plurality of source transmission nodes are delivered to the target transmission node.
- the layer 2 transmission state maintained by the UE may be transmitted to the target transmission node by the one or more source transmission nodes, so that the target transmission node transmits to the UE on the basis of the layer 2 transmission states.
- the forwarded data is transmitted by the one or more source transmission nodes to the target transmission node to implement data forwarding.
- the UE receives the service node replacement notification sent by the first source transmission node, where the service node replacement notification is used to notify the UE to establish a connection with the target transmission node; and the UE replaces the notification according to the service node.
- the transport configuration is transmitted with the target transport node. In this way, the UE and the target transmission node can be transmitted on the basis of the transmission state that is maintained. Compared with the related art, the transmission state of the layer 2 is required, so that the embodiment of the present disclosure can improve the network transmission efficiency.
- an embodiment of the present disclosure provides another method for replacing a transmission node.
- the method includes the following steps: 301: A target transmission node receives a UE to initiate a random access procedure according to a service node replacement notification, where the The service node replacement notification is used to notify the UE to establish a connection with the target transmission node; 302, the target transmission is based on all or part of the layer 2 transmission state between the UE and the one or more source transmission nodes.
- the node transmits with the UE using a transmission configuration of the UE at the target transmission node, where the source transmission node is a transmission node that the UE connects before receiving the service node replacement notification.
- the target transmission node uses the UE to transmit at the target transmission node, on the basis that the UE maintains all or part of a layer 2 transmission state with the source transmission node.
- the transmission configuration is transmitted with the UE, including:
- the target transmission node uses the transmission configuration of the UE at the target transmission node to transmit with the UE, where the UE maintains a partial layer 2 transmission state with the source transmission node, where
- the partial layer 2 transmission state is that the indication information carried in the service node replacement notification indicates that the layer 2 transmission state needs to be maintained, or the partial layer 2 transmission state is a layer 2 transmission state that needs to be maintained by default.
- the target transmission node uses the transmission configuration of the UE at the target transmission node to perform transmission with the UE, including: at a configuration time point, the target transmission node uses the UE to transmit at the target The transmission configuration of the node is transmitted with the UE; or when the random access procedure is successful, the target transmission node uses the transmission configuration of the UE at the target transmission node to transmit with the UE.
- the target transmission node is configured to receive, by the UE, a transmission node of a plurality of transmission nodes corresponding to a transmission node configuration set sent by the network side device, where the transmission node configuration set includes the UE in the multiple transmissions The transmission configuration of the node.
- the method further includes: the target transmission node receives a service node replacement notification sent by the centralized transmission node by using an interface message, where the service node replacement notification sent by the interface message includes one or more of the following: The migration information of the set of serving nodes of the UE; the joining information of the set of serving nodes of the UE; the measurement result of the UE; the transmission configuration of the UE at the target transmission node; the data forwarding information, the data forwarding The information is used to indicate whether data forwarding is required; status indication information is used to indicate whether it is necessary to maintain the layer 2 transmission status, and to indicate all or part of the layer 2 transmission status that needs to be maintained.
- the method further includes: the target transmission node receives a service node replacement request sent by the first source transmission node; the target transmission node determines whether to accept the service node replacement request, and if yes, The first source transmission node returns an acknowledgment message, and the acknowledgment message includes a transmission configuration of the UE at the target transmission node, where the service node replacement request includes one or more of the following: measurement of the UE Result: the transmission configuration of the UE at the source transmission node; data forwarding information, the data forwarding information is used to indicate whether data forwarding is required; status indication information, the status indication information is used to indicate whether maintenance is required Layer 2 transmission status, and all or part of the Layer 2 transmission status indicating that it needs to be maintained.
- the layer 2 transmission state maintained by the UE includes one or more of the following: a HARQ-related transmission state; an AM transmission-related state variable and a timer value; and a UM transmission-related state variable and a timer value. .
- the method further includes: the target transmission node receives state information of a layer 2 transmission state that is maintained by the UE by one or more source transmission nodes; if data forwarding is required, the method further includes: The target transmission node receives data that the one or more source transmission nodes transmit to the UE that need to be forwarded.
- the present embodiment is an implementation manner of the target transmission node corresponding to the embodiment shown in FIG. 2.
- the network transmission efficiency is also improved.
- an embodiment of the present disclosure further provides a method for replacing a transit node.
- the method includes the following steps: 401.
- a first source transit node sends a service node replacement notification to a UE, where the service node is replaced.
- the notification is used to notify the UE to establish a connection with the target transmission node, where the target transmission node is one or more transmission nodes, so that the UE initiates a random access procedure to the target transmission node according to the service node replacement notification.
- the target transmission node is one or more transmission nodes
- the one or more source transmission nodes include the first source transmission node
- the source transmission node is the UE receiving the service node. Replace the transit node that was connected before the notification.
- the service node replacement notification is used to notify the UE to be replaced by the one or more source transmission nodes to the target transmission node; or the service node replacement notification is used to notify the UE to disconnect the connected a connection of a part of the plurality of source transmission nodes and establishing a connection with the target transmission node; or the service node replacement notification is used to notify the UE to add to the connected one or more source transmission nodes The target transmission node.
- the partial layer 2 transmission state is that the indication information carried in the service node replacement notification indicates a layer 2 transmission state that needs to be maintained, or the partial layer 2 transmission state is a layer 2 transmission state that needs to be maintained by default.
- the method further includes: the first source transmission node sending a transmission node configuration set to the UE, the transmission node configuration set A transmission configuration of the UE at a plurality of transmission nodes is included, wherein the plurality of transmission nodes include at least the target transmission node.
- the service node replacement notification includes a transmission configuration of the UE at the target transmission node, or the method further includes: if the first source transmission node determines that the UE establishes a connection with a target transmission node, The first source transmission node sends, to the UE, a transmission configuration of the UE at the target transmission node.
- the service node replacement notification includes one or more of the following: the removal information of the service node set of the UE; the join information of the service node set of the UE; and the transmission configuration of the UE at the target transmission node.
- Data forwarding information the data forwarding information is used to indicate whether data forwarding is required; status indication information, the status indication information is used to indicate whether it is necessary to maintain the layer 2 transmission status, and all or part of the indication needs to be maintained.
- Layer 2 transmission status is used to indicate whether it is necessary to maintain the layer 2 transmission status, and all or part of the indication needs to be maintained.
- the first source transmission node sends a service node replacement notification to the UE, where the first source transmission node sends a signaling to the UE, where the signaling includes the service node replacement notification
- the signaling is RRC signaling, and the RRC signaling is sent by the centralized transmission node, and is forwarded by the first source transmission node to the UE by air interface transmission; or the signaling is layer 2 signaling, the layer 2 signaling is signaling that is self-organized by the first source transmission node according to the service node replacement information sent by the centralized transmission node; or the signaling is layer 1 signaling, the layer 1 signaling And signaling that is self-organized by the first source transmission node according to the service node replacement information sent by the centralized transmission node.
- the method further includes: the first source transmission node receives a service node replacement notification sent by the centralized transmission node by using an interface message, where the service node replacement notification sent by the interface message includes one or more of the following: Item: the removal information of the service node set of the UE; the join information of the service node set of the UE; the measurement result of the UE; the transmission configuration of the UE at the target transmission node; the data forwarding information, the data The forwarding information is used to indicate whether data forwarding is required; status indication information is used to indicate whether it is necessary to maintain the layer 2 transmission status, and to indicate all or part of the layer 2 transmission status that needs to be maintained.
- Item the removal information of the service node set of the UE
- the join information of the service node set of the UE the measurement result of the UE
- the transmission configuration of the UE at the target transmission node the data forwarding information
- the forwarding information is used to indicate whether data forwarding is required
- status indication information is used to indicate whether it is
- the target transmission node is a service section that is sent by the first source transmission node.
- the transmitting node of the UE is admitted, and the target transmitting node returns a transmission configuration of the UE at the target transmitting node to the first source transmitting node after receiving; wherein the serving node
- the replacement request includes one or more of the following: a measurement result of the UE; a transmission configuration of the UE at the source transmission node; data forwarding information, where the data forwarding information is used to indicate whether data forwarding is required;
- the status indication information is used to indicate whether it is necessary to maintain the layer 2 transmission status, and to indicate all or part of the layer 2 transmission status that needs to be maintained.
- the first source transmission node sends a service node replacement notification to the UE, where the first source transmission node sends a signaling to the UE, where the signaling includes the service node replacement notification
- the signaling is RRC signaling, and the RRC signaling is generated by the first source transmission node, and the transmission configuration sent by the target transmission node is placed in the RRC signaling through a container.
- the first source transmission node performs air interface transmission and forwarding to the UE; or the signaling is layer 2 signaling, and the layer 2 signaling is that the first source transmission node is according to the target transmission node.
- the transmitted transmission configures self-organized signaling; or the signaling is layer 1 signaling, and the layer 1 signaling is self-organized signaling of the first source transmission node according to the transmission configuration sent by the target transmission node. .
- the layer 2 transmission state maintained by the UE includes one or more of the following: a HARQ-related transmission state; an AM transmission-related state variable and a timer value; and a UM transmission-related state variable and a timer value. .
- the state information of the layer 2 transmission state that is maintained by the UE is transmitted by the one or more source transmission nodes to the target transmission node; if data forwarding is required, the data that the UE needs to forward is performed by One or more source transport nodes are passed to the target transport node.
- the present embodiment is an implementation manner of the network side device corresponding to the embodiment shown in FIG. 2, and a specific implementation manner of the embodiment may refer to the related description of the embodiment shown in FIG. 2, so as to avoid duplicating description. This embodiment will not be described again. In this embodiment, network transmission efficiency can also be improved.
- This example is exemplified by a network side device as a centralized transmission node (CU). As shown in FIG. 5, the method includes the following steps:
- Step 0 The CU node configures a corresponding measurement for the UE, and the UE performs measurement on the current serving transmission node or the set and the adjacent transmission node, and the measurement result processing, wherein the step is not embodied in the figure;
- Step 1 When the measurement result of the UE meets the reported trigger condition, such as periodic report or event trigger report, the typical event trigger report condition is that the measurement result of the current serving transport node (ie, one or more source transport nodes) is lower than the threshold. And for a certain period of time, and the measurement result of the neighboring transmission node is higher than a certain threshold or higher than the current serving transmission node and lasts for a certain time. After the condition is met, the UE reports the measurement result.
- the reported trigger condition such as periodic report or event trigger report
- the typical event trigger report condition is that the measurement result of the current serving transport node (ie, one or more source transport nodes) is lower than the threshold. And for a certain period of time, and the measurement result of the neighboring transmission node is higher than a certain threshold or higher than the current serving transmission node and lasts for a certain time.
- the reporting of the measurement result may reach the CU node corresponding to the current serving transmission node of the UE by means of L3 signaling.
- each transmission node (including the service transmission node and the adjacent transmission node) of the network side device uplinks to the UE.
- Step 2 The CU node collects various measurement results and report information, and performs comprehensive judgment. When it is decided to replace the service transmission node or the service node set of the UE, the source transmission node and the target transmission node need to be notified, and the UE also needs to The decision was notified.
- the service node change notification may carry the following information: which TRPs are removed from the service node set; which new TRPs are added to the service node set; UE measurement results; UE configuration at the target transport node; whether data forwarding is required; whether L2 state hold and Or which L2 states remain.
- Service node changes are sent by the CU node to the various transport nodes involved.
- Step 3a The network side device sends a service node change notification to the UE.
- the service node change notification is also sent to the UE on the air interface.
- the notification method is as follows: RRC signaling, layer 2 signaling, or layer 1 signaling.
- RRC signaling for details, refer to the foregoing implementation manners of the three signalings. This is not repeated here.
- the process of notifying the UE can use L2. Signaling or L1 signaling; when needed to configure the UE The complete transmission configuration of the target transmission node is still more secure with the RRC signaling process.
- Step 3b After receiving the service node replacement notification sent by the CU, if the source transmission node needs to perform data forwarding and or L2 state reservation, the source transmission node needs to forward the UE related data and the UE related L2 status.
- the target transport node forwards.
- the data forwarding of the UE may be performed based on the bearer or may be performed based on different data flows under the bearer.
- the bearer 1 needs to be forwarded
- the bearer 2 does not need to be forwarded
- the data stream 1 in the bearer 1 needs to be forwarded
- the data stream 2 in the bearer 1 does not need to be forwarded.
- the granularity of the forwarding channel can be based on the bearer DRB granularity or the different flow granularities in one bearer.
- the L2 state is reserved, that is, the current UE-related uplink and downlink L2 state is transmitted to the target transmission for continuous use, wherein the L2 state generally includes one or more of the following: a HARQ-related transmission state; an AM transmission-related state. Variable and timer values; state variables and timer values associated with UM transfers.
- Step 4 After receiving the service node change notification, the UE may initiate a random access procedure to the target transit node according to the pre-configured or dedicated Preamble carried in the notification, and initiate synchronous access to the target side.
- Step 5 The target transmission node replies with a response to the UE-specific Preamble, and then the UE and the target transmission node can perform data transmission.
- step 5 is completed, indicating that the UE and the target transmission node can simultaneously start enabling dedicated configuration for the UE, such as dedicated uplink control channel configuration, dedicated transmission configuration, and the like.
- the layer two state can also be partially reset, partially maintained, such as a MAC state reset, and the RLC state is maintained.
- the security-related layer may be maintained without default, and the default operation, such as the related operations and states of the PDCP layer, should be performed continuously.
- Step 6 After the UE successfully synchronizes with the target TRP, the target transit node needs A path conversion request process is initiated to the CU node, and the uplink and downlink paths of the UE are updated to be performed by the target transmission node.
- This example uses the network side device as one of the source transmission nodes of the UE. As shown in FIG. 6, the method includes the following steps:
- Step 0 The UE acquires a measurement-related configuration.
- the measurement configuration is also configured by the CU node through L3 signaling, and of course, the L2 signaling configuration measurement is not excluded, or the entire set of L3 signaling configuration measurements is Which specific measurement configurations in the currently enabled configuration set are indicated by L2 signaling.
- the UE performs related operations according to the measurement configuration, and the UE performs measurement on the current serving transmission node or the set and the adjacent transmission node, and the measurement result processing, wherein the step is not embodied in the drawing.
- Step 1 When the measurement result of the UE meets the reported trigger condition, such as periodic report or event trigger report, the typical event trigger report condition is that the measurement result of the current serving transport node is lower than the threshold and lasts for a certain period of time, and/or adjacent transmission. The measurement result of the node is higher than a certain threshold or higher than the service transmission node and lasts for a certain period of time. After the condition is met, the UE reports the measurement result.
- the reported trigger condition such as periodic report or event trigger report
- the typical event trigger report condition is that the measurement result of the current serving transport node is lower than the threshold and lasts for a certain period of time, and/or adjacent transmission.
- the measurement result of the node is higher than a certain threshold or higher than the service transmission node and lasts for a certain period of time.
- the reporting of the measurement result can reach the current serving transmission node of the UE more quickly by means of L2 signaling.
- each transmission node (including the service transmission node and the adjacent transmission node) of the network side device uplinks to the UE. Collection and interaction of measurement results; monitoring and interaction of various transmission nodes (including service transmission nodes and adjacent transmission nodes) of the network side device, such as load status and adjustment requirements (cover adjustment, temporary shutdown, etc.).
- Step 2 The source transit node collects the measurement result and the report information, and performs comprehensive judgment. When it is decided to replace the service node or the service node set of the UE, the service node change request needs to be performed to the target transport node.
- the service node change request may carry the following information: the measurement result of the UE; the configuration of the UE in the source TRP; whether data forwarding is required; whether the L2 state is required to be maintained.
- the head of the source transport node should have a good air interface quality to the UE, or the backhaul link quality is good, or the UE complete information is saved, or the node serving as the serving transport node of the UE can still be reserved after the update. .
- Step 3 After receiving the service node change request, the target transmission node performs an admission judgment on the UE, and if it can be accepted, returns an acknowledgement and carries the configuration of the UE in the target transit node.
- Step 4a The source transmission node sends a service node change notification to the UE according to the admission and configuration returned by the target transmission node, where the notification may carry: which TRPs are removed from the service node set; which new TRPs are added to the service node set; The configuration of the new TRP; whether the L2 state is maintained and or which L2 state is maintained.
- the service node change notification is sent to the UE on the air interface.
- the notification method includes the following: RRC signaling, layer 2 signaling, or layer 1 signaling.
- RRC signaling for details, refer to the foregoing implementation manners of the three signalings. Do not repeat the instructions.
- the process of notifying the UE can use L2. Signaling or L1 signaling; when it is necessary to configure the UE with the complete transmission configuration of the target transmission node, the RRC signaling process is still more secure.
- Step 4b The source transit node transmits the data that needs to be forwarded and the L2 state information of the UE that needs to be reserved to the target transport node according to the negotiation result of the forwarding and the L2 state reservation.
- the data forwarding of the UE may be performed based on the bearer or may be performed based on different data flows under the bearer.
- the bearer 1 needs to be forwarded, the bearer 2 does not need to be forwarded, and the data stream 1 in the bearer 1 needs to be forwarded, and the data stream 2 in the bearer 1 does not need to be forwarded.
- the granularity of the forwarding channel can be based on the bearer DRB granularity or the different flow granularities in one bearer.
- the L2 state is reserved, that is, the current UE-related uplink and downlink L2 state is transmitted to the target TRP for subsequent use.
- the L2 state generally includes one or more of the following: a HARQ-related transmission state; an AM transmission-related state variable and a timer value; a UM transmission-related state variable and a timer value.
- Step 5 After receiving the service node change notification, the UE may initiate a random access procedure to the target TRP according to the pre-configured or dedicated Preamble carried in the notification, and initiate synchronous access to the target side.
- Step 6 The target transmission node replies with a response to the UE-specific Preamble, and then the UE and the target transmission node can perform data transmission.
- step 6 is completed, indicating that the UE and the target transmission node can simultaneously start enabling dedicated configuration for the UE, such as dedicated uplink control channel configuration, dedicated transmission configuration, and the like.
- the layer two state can also be partially reset, partially maintained, such as a MAC state reset, and the RLC state is maintained.
- the security-related layer may be maintained without default, and the default operation, such as the related operations and states of the PDCP layer, should be performed continuously.
- Step 7 After the UE successfully synchronizes with the target transmission node, the target transmission node needs to initiate a path conversion request process to the CU node, and update the uplink and downlink path of the UE to be performed by the target transmission node.
- the UE 700 includes a module: a first receiving module 701, configured to receive a service node replacement notification sent by a first source transmission node, where the service node replacement notification is used for Notifying the UE to establish a connection with the target transmission node, the target transmission node is one or more transmission nodes; and the initiating module 702 is configured to initiate a random access procedure to the target transmission node according to the service node replacement notification; a module 703, configured to transmit, by using, the transmission configuration of the UE at the target transmission node and the target transmission node, on a basis of maintaining all or part of a layer 2 transmission state with one or more source transmission nodes, where The one or more source transmission nodes include the first source transmission node, and the source transmission node is a transmission node that the UE connects before receiving the service node replacement notification.
- the service node replacement notification is used to notify the UE to be replaced by the one or more source transmission nodes to the target transmission node; or the service node replacement notification is used to notify the The UE disconnects a part of the connected plurality of source transmission nodes and establishes a connection with the target transmission node; or the service node replacement notification is used to notify the UE that one or more sources are connected
- the target transmission node is added on the basis of the transmission node.
- the transmission module 703 is configured to use the transmission configuration of the UE at the target transmission node to transmit with the target transmission node, while maintaining a partial layer 2 transmission state with the one or more source transmission nodes.
- the partial layer 2 transmission state is that the indication information carried in the service node replacement notification indicates that the layer 2 transmission state needs to be maintained, or the partial layer 2 transmission state is a layer 2 transmission state that needs to be maintained by default.
- the UE further includes: a reset module 704, configured to perform reset processing on other layer 2 transmission states except the partial layer 2 transmission state.
- the transmission module 703 is configured to use the transmission configuration of the UE at the target transmission node to transmit with the target transmission node at a configuration time point; or the transmission module 703 is configured to succeed in the random access process. And transmitting, by using the UE, the transmission configuration of the target transmission node and the target transmission node.
- the UE further includes: a second receiving module 705, configured to receive a transmission node configuration set sent by the network side device, where the transmission node configuration set includes the UE in multiple transmission nodes. Transmission configuration, wherein the plurality of transmission nodes includes at least the target transmission node.
- the service node replacement notification includes a transmission configuration of the UE at the target transmission node
- the UE further includes: a third receiving module 706, configured to: if the network side device determines that the UE establishes a connection with the target transit node, and receives the UE sent by the network side device The transmission configuration of the target transport node.
- the service node replacement notification includes one or more of the following: the removal information of the service node set of the UE; the join information of the service node set of the UE; and the transmission configuration of the UE at the target transmission node.
- Data forwarding information the data forwarding information is used to indicate whether data forwarding is required; status indication information, the status indication information is used to indicate whether it is necessary to maintain the layer 2 transmission status, and all or part of the indication needs to be maintained.
- Layer 2 transmission status is used to indicate whether it is necessary to maintain the layer 2 transmission status, and all or part of the indication needs to be maintained.
- the first receiving module 701 is configured to receive a signaling sent by the first source transit node, where
- the signaling includes the service node replacement notification, where the signaling is radio resource control RRC signaling, and the RRC signaling is sent by a centralized transmission node, and is performed by the first source transmission node.
- the air interface transmission is forwarded to the UE; or the signaling is layer 2 signaling, and the layer 2 signaling is signaling that the first source transmission node organizes itself according to the service node replacement information sent by the centralized transmission node; Or the signaling is layer 1 signaling, and the layer 1 signaling is signaling that the first source transmission node organizes itself according to the service node replacement information sent by the centralized transmission node.
- the centralized transmission node sends a service node replacement notification to the target transmission node and one or more source transmission nodes by using an interface message, where the service node replacement notification sent by the interface message includes one or more of the following: Item: the removal information of the service node set of the UE; the join information of the service node set of the UE; the measurement result of the UE; the transmission configuration of the UE at the target transmission node; the data forwarding information, the data forwarding The information is used to indicate whether data forwarding is required; status indication information is used to indicate whether it is necessary to maintain the layer 2 transmission status, and to indicate all or part of the layer 2 transmission status that needs to be maintained.
- Item the removal information of the service node set of the UE
- the join information of the service node set of the UE the measurement result of the UE
- the transmission configuration of the UE at the target transmission node the data forwarding information
- the information is used to indicate whether data forwarding is required
- status indication information is used to indicate whether it is necessary
- the target transmission node is a transmission node that accepts the UE after receiving the service node replacement request sent by the first source transmission node, and the target transmission node receives the first source after receiving Transmitting, by the transmitting node, a transmission configuration of the UE at the target transmission node, where the serving node replacement request includes one or more of: a measurement result of the UE; the UE is in one or more source transmission nodes Transmission configuration; data forwarding information, the data forwarding information is used to indicate whether data forwarding is required; status indication information, the status indication information is used to indicate whether it is necessary to maintain the layer 2 transmission status, and indicate that all needs to be maintained Or part of the layer 2 transmission status.
- the first receiving module 701 is configured to receive a signaling sent by the first source transmitting node, where the signaling includes the serving node replacement notification, where the signaling is an RRC letter.
- the RRC signaling is generated by the first source transmission node, and the transmission configuration sent by the target transmission node is placed in the RRC signaling through a container, and is performed by the first source transmission node.
- the air interface transmission is forwarded to the UE; or the signaling is layer 2 signaling, and the layer 2 signaling is signaling that the first source transmission node organizes itself according to the transmission configuration sent by the target transmission node; Or the signaling is layer 1 signaling, and the layer 1 signaling is signaling that the first source transmission node organizes itself according to a transmission configuration sent by the target transmission node.
- the layer 2 transmission state maintained by the UE includes one or more of the following: a HARQ-related transmission state; an AM transmission-related state variable and a timer value; and a UM transmission-related state variable and a timer value. .
- the state information of the layer 2 transmission state that is maintained by the UE is transmitted by the one or more source transmission nodes to the target transmission node; if data forwarding is required, the data that the UE needs to forward is performed by One or more source transport nodes are passed to the target transport node.
- the transmission state of the security-related layer of the UE during the transit node replacement process is maintained by default, and no reset is required.
- the foregoing UE 700 may be a UE in any of the method embodiments in the embodiments of the disclosure, and any implementation manner of the UE in the method embodiment in this disclosure may be used in this embodiment.
- the foregoing UE 700 is implemented, and the same beneficial effects are achieved, and details are not described herein again.
- the transmission node 1100 is a target transmission node, and the transmission node 1100 includes the following module: a first receiving module 1101, configured to receive, by the UE, a random access procedure according to a service node replacement notification.
- the service node replacement notification is used to notify the UE to establish a connection with a target transmission node
- the transmission module 1102 is configured to maintain all or part of a layer 2 transmission between the UE and one or more source transmission nodes.
- the transmission module 1102 is configured to perform, by using, by the UE, a transmission configuration of the UE in the target transmission node, with the UE, on a basis of maintaining a partial layer 2 transmission state between the UE and the source transmission node.
- the transmission wherein the partial layer 2 transmission state is that the indication information carried in the service node replacement notification indicates a layer 2 transmission state that needs to be maintained, or the partial layer 2 transmission state is a layer 2 transmission state that needs to be maintained by default.
- the transmission module 1102 is configured to use the UE to perform transmission with the UE in a transmission configuration of the target transmission node at a configuration time point; or the transmission module 1102 is configured to succeed in the random access process. And transmitting, by using the UE, a transmission configuration of the target transmission node with the UE.
- the target transmission node is a transmission node that is sent by the UE to the network side device. And configuring a transmission node among the plurality of transmission nodes corresponding to the set, where the transmission node configuration set includes a transmission configuration of the UE at the multiple transmission nodes.
- the transmission node further includes: a second receiving module 1103, configured to receive a service node replacement notification sent by the centralized transmission node by using an interface message, where the service node sent by using the interface message
- the replacement notification includes one or more of the following: the removal information of the service node set of the UE; the join information of the service node set of the UE; the measurement result of the UE; and the transmission configuration of the UE at the target transmission node; Data forwarding information, the data forwarding information is used to indicate whether data forwarding is required; status indication information, the status indication information is used to indicate whether it is necessary to maintain the layer 2 transmission status, and indicate all or part of layers that need to be maintained. 2 transmission status.
- the transmitting node further includes: a third receiving module 1104, configured to receive a service node replacement request sent by the first source transmitting node; and a returning module 1105, configured to determine whether to accept the Determining a service node replacement request, if yes, returning an acknowledgement message to the first source transport node, where the acknowledgement message includes a transmission configuration of the UE at the target transport node; wherein the service node change request includes the following Item or multiple: measurement result of the UE; transmission configuration of the UE at the source transmission node; data forwarding information, the data forwarding information is used to indicate whether data forwarding is required; status indication information, The status indication information is used to indicate whether it is necessary to maintain the layer 2 transmission status, and to indicate all or part of the layer 2 transmission status that needs to be maintained.
- a third receiving module 1104 configured to receive a service node replacement request sent by the first source transmitting node
- a returning module 1105 configured to determine whether to accept the Determining a service node replacement request, if
- the layer 2 transmission state maintained by the UE includes one or more of the following: a HARQ-related transmission state; an AM transmission-related state variable and a timer value; and a UM transmission-related state variable and a timer value. .
- the transmitting node further includes: a fourth receiving module 1106, configured to receive state information of a layer 2 transmission state that is maintained by the UE by one or more source transmitting nodes; The data forwarding is performed, and the transmitting node further includes: a fifth receiving module 1107, configured to receive, by the one or more source transmitting nodes, data that needs to be forwarded by the UE.
- the foregoing transmission node 1100 may be a target transmission node in any embodiment of the method embodiment in the embodiment of the disclosure, and any implementation manner of the target transmission node in the method embodiment in the embodiment of the disclosure may be used. It is implemented by the above-mentioned transmission node 1100 in this embodiment. Now, and to achieve the same beneficial effects, will not be described here.
- the transmission node 1500 is a first source transmission node
- the network side device 1500 includes a module: a first sending module 1501, configured to send a service node replacement notification to the UE, where The service node replacement notification is used to notify the UE to establish a connection with a target transmission node, where the target transmission node is one or more transmission nodes, so that the UE transmits to the target according to the service node replacement notification.
- the node initiates a random access procedure, and uses the UE's transmission configuration at the target transport node on the basis of maintaining all or part of the layer 2 transmission state between the UE and one or more source transport nodes.
- the target transmission node performs transmission, where the target transmission node is one or more transmission nodes, the one or more source transmission nodes include the first source transmission node, and the source transmission node is the UE A transit node connected before receiving the service node replacement notification.
- the service node replacement notification is used to notify the UE to be replaced by the one or more source transmission nodes to the target transmission node; or the service node replacement notification is used to notify the UE to disconnect the connected a connection of a part of the plurality of source transmission nodes and establishing a connection with the target transmission node; or the service node replacement notification is used to notify the UE to add to the connected one or more source transmission nodes The target transmission node.
- the partial layer 2 transmission state is that the indication information carried in the service node replacement notification indicates a layer 2 transmission state that needs to be maintained, or the partial layer 2 transmission state is a layer 2 transmission state that needs to be maintained by default.
- the transmitting node 1500 further includes: a second sending module 1502, configured to send, to the UE, a transport node configuration set, where the transport node configuration set includes the UE in multiple transmissions A transmission configuration of a node, wherein the plurality of transmission nodes includes at least the target transmission node.
- a second sending module 1502 configured to send, to the UE, a transport node configuration set, where the transport node configuration set includes the UE in multiple transmissions A transmission configuration of a node, wherein the plurality of transmission nodes includes at least the target transmission node.
- the service node replacement notification includes a transmission configuration of the UE in the target transmission node; or, as shown in FIG. 17a, the transmission node 1500 further includes: a third sending module 1503, if the first The source transmission node determines that the UE establishes a connection with the target transmission node, and transmits, to the UE, a transmission configuration of the UE at the target transmission node.
- the service node replacement notification includes one or more of the following: the removal information of the service node set of the UE; the join information of the service node set of the UE; The transmission configuration of the standard transmission node; the data forwarding information, the data forwarding information is used to indicate whether data forwarding is required; the status indication information is used to indicate whether the layer 2 transmission status needs to be maintained, and the indication is needed. All or part of the layer 2 transmission state is maintained.
- the first sending module 1501 is configured to send, to the UE, a signaling, where the signaling includes the serving node replacement notification, where the signaling is radio resource control RRC signaling,
- the RRC signaling is sent by the centralized transmission node, and is forwarded by the first source transmission node to the UE by air interface transmission; or the signaling is layer 2 signaling, and the layer 2 signaling is Decoding the self-organized signaling by the first source transmission node according to the service node replacement information sent by the centralized transmission node; or the signaling is layer 1 signaling, and the layer 1 signaling is that the first source transmission node is according to the centralized transmission
- the signaling of the service node replacement information sent by the node is self-organized.
- the transmission node 1500 further includes: a receiving module 1504, configured to receive a service node replacement notification sent by the centralized transmission node by using an interface message, where the service node replacement notification sent by using the interface message includes One or more of the following: the removal information of the set of service nodes of the UE; the join information of the set of service nodes of the UE; the measurement result of the UE; the transmission configuration of the UE at the target transmission node; data forwarding Information, the data forwarding information is used to indicate whether data forwarding is required; status indication information, the status indication information is used to indicate whether it is necessary to maintain the layer 2 transmission status, and indicate all or part of the layer 2 transmission status that needs to be maintained. .
- a receiving module 1504 configured to receive a service node replacement notification sent by the centralized transmission node by using an interface message, where the service node replacement notification sent by using the interface message includes One or more of the following: the removal information of the set of service nodes of the UE; the join information of the set of service nodes of
- the target transmission node is a transmission node that accepts the UE after receiving the service node replacement request sent by the first source transmission node, and the target transmission node returns to the first source transmission node after receiving Determining, by the UE, a transmission configuration of the target transmission node, where the service node replacement request includes one or more of the following: a measurement result of the UE; a transmission configuration of the UE at the source transmission node; Transfer information, the data forwarding information is used to indicate whether data forwarding is required; status indication information, the status indication information is used to indicate whether the layer 2 transmission status needs to be maintained, and all or part of the layer 2 transmission that needs to be maintained is indicated. status.
- the first sending module 1501 is configured to send a signaling to the UE, where the signaling includes the serving node replacement notification, where the signaling is RRC signaling, and the RRC
- the signaling is generated by the first source transmission node, and the transmission configuration sent by the target transmission node is placed in the RRC signaling in the form of a container, and the first source transmission node performs air interface transmission.
- the signaling is layer 2 signaling, and the layer 2 signaling is signaling that the first source transmission node organizes itself according to a transmission configuration sent by the target transmission node;
- the signaling is layer 1 signaling, and the layer 1 signaling is signaling that the first source transmission node organizes itself according to a transmission configuration sent by the target transmission node.
- the layer 2 transmission state maintained by the UE includes one or more of the following: a HARQ-related transmission state; an AM transmission-related state variable and a timer value; and a UM transmission-related state variable and a timer value. .
- the state information of the layer 2 transmission state that is maintained by the UE is transmitted by the one or more source transmission nodes to the target transmission node; if data forwarding is required, the data that the UE needs to forward is performed by One or more source transport nodes are passed to the target transport node.
- the foregoing transmission node 1500 may be the first source transmission node in any embodiment of the method embodiment in the embodiment of the disclosure, and any of the first source transmission nodes in the method embodiment in the embodiment of the disclosure
- the embodiments can be implemented by the transmission node 1500 in this embodiment, and achieve the same beneficial effects, and details are not described herein again.
- FIG. 18 there is shown a structure of a UE including: a processor 1800, a transceiver 1810, a memory 1820, a user interface 1830, and a bus interface, wherein:
- the processor 1800 is configured to read a program in the memory 1820 and perform the following processes:
- a service node replacement notification sent by the first source transmission node where the service node replacement notification is used to notify the UE to establish a connection with the target transmission node, where the target transmission node is one or more transmission nodes.
- the transceiver 1810 Transmitting, by the transceiver 1810, the transmission configuration of the UE at the target transmission node to the target transmission node, based on maintaining all or part of the layer 2 (L2) transmission state with one or more source transmission nodes And wherein the one or more source transmission nodes comprise the first source transmission node, and the source transmission node is a transmission node that the UE connects before receiving the service node replacement notification.
- L2 layer 2
- the transceiver 1810 is configured to receive and transmit data under the control of the processor 1800.
- the bus architecture can include any number of interconnected buses and bridges, specifically processed One or more processors represented by 1800 are linked to various circuits of the memory represented by memory 1820.
- the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
- the bus interface provides an interface.
- Transceiver 1810 may be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
- the user interface 1830 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
- the processor 1800 is responsible for managing the bus architecture and general processing, and the memory 1820 can store data used by the processor 1800 in performing operations.
- the service node replacement notification is used to notify the UE to be replaced by the one or more source transmission nodes to the target transmission node; or the service node replacement notification is used to notify the UE to disconnect the connected a connection of a part of the plurality of source transmission nodes and establishing a connection with the target transmission node; or the service node replacement notification is used to notify the UE to add to the connected one or more source transmission nodes The target transmission node.
- the transmitting by using the UE, the transmission configuration of the target transmission node and the target transmission node, based on maintaining all or part of a layer 2 transmission state between the one or more source transmission nodes,
- the method includes: transmitting, by using a transmission configuration of the UE at the target transmission node, with a target transmission node, where the partial layer 2 is transmitted, while maintaining a partial layer 2 transmission state with one or more source transmission nodes.
- the transmission status is that the indication information carried in the service node replacement notification indicates the layer 2 transmission status that needs to be maintained, or the partial layer 2 transmission status is the layer 2 transmission status that needs to be maintained by default.
- the processor 1800 is further configured to: perform reset processing on other layer 2 transmission states except the partial layer 2 transmission state.
- the transmitting, by using the UE, the transmission configuration of the target transmission node and the target transmission node includes: using, at a configuration time point, a transmission configuration of the UE at the target transmission node and a target transmission node. Performing transmission; or transmitting, when the random access procedure is successful, using the transmission configuration of the UE at the target transmission node with the target transmission node.
- the processor 1800 before receiving the service node replacement notification sent by the first source transmission node, is further configured to: receive a transmission node configuration set sent by the network side device, where the transmission node The configuration set includes a transmission configuration of the UE at a plurality of transmission nodes, wherein the plurality of transmission nodes includes at least the target transmission node.
- the service node replacement notification includes a transmission configuration of the UE in the target transmission node; or the processor 1800 is further configured to: if the network side device determines that the UE establishes a connection with the target transmission node, The machine 1810 receives the transmission configuration of the UE at the target transmission node that is sent by the network side device.
- the service node replacement notification includes one or more of the following: the removal information of the service node set of the UE; the join information of the service node set of the UE; and the transmission configuration of the UE at the target transmission node.
- Data forwarding information the data forwarding information is used to indicate whether data forwarding is required; status indication information, the status indication information is used to indicate whether it is necessary to maintain the layer 2 transmission status, and all or part of the indication needs to be maintained.
- Layer 2 transmission status is used to indicate whether it is necessary to maintain the layer 2 transmission status, and all or part of the indication needs to be maintained.
- the service node replacement notification sent by the first source transmission node includes: receiving a signaling sent by the first source transmission node, where the signaling includes the service node replacement notification, where
- the signaling is radio resource control RRC signaling, and the RRC signaling is sent by the centralized transmission node, and is forwarded by the source transmission node to the UE by air interface transmission; or the signaling is layer 2 signaling.
- the layer 2 signaling is signaling that is self-organized by the source transmission node according to the service node replacement information sent by the centralized transmission node; or the signaling is layer 1 signaling, and the layer 1 signaling is The source transport node self-organizes signaling according to the service node replacement information sent by the centralized transport node.
- the centralized transmission node sends a service node replacement notification to the target transmission node and one or more source transmission nodes by using an interface message, where the service node replacement notification sent by the interface message includes one or more of the following: Item: the removal information of the service node set of the UE; the join information of the service node set of the UE; the measurement result of the UE; the transmission configuration of the UE at the target transmission node; the data forwarding information, the data forwarding The information is used to indicate whether data forwarding is required; status indication information is used to indicate whether it is necessary to maintain the layer 2 transmission status, and to indicate all or part of the layer 2 transmission status that needs to be maintained.
- Item the removal information of the service node set of the UE
- the join information of the service node set of the UE the measurement result of the UE
- the transmission configuration of the UE at the target transmission node the data forwarding information
- the information is used to indicate whether data forwarding is required
- status indication information is used to indicate whether it is necessary
- the target transmission node is a transmission node that accepts the UE after receiving the service node replacement request sent by the first source transmission node, and the target transmission node receives the first source after receiving Transmitting a node to return a transmission configuration of the UE at the target transmission node;
- the service node replacement request includes one or more of the following: a measurement result of the UE; a transmission configuration of the UE at one or more source transmission nodes; data forwarding information, and the data forwarding information is used to indicate Whether data forwarding is required; status indication information for indicating whether it is necessary to maintain the layer 2 transmission status, and indicating all or part of the layer 2 transmission status that needs to be maintained.
- the receiving the service node replacement notification sent by the first source transmission node includes: receiving a signaling sent by the first source transmission node, where the signaling includes the service node replacement notification
- the signaling is RRC signaling, and the RRC signaling is generated by the first source transmission node, and the transmission configuration sent by the target transmission node is placed in the RRC signaling through a container.
- the first source transmission node performs air interface transmission and forwarding to the UE; or the signaling is layer 2 signaling, and the layer 2 signaling is that the first source transmission node is according to the target transmission node.
- the transmitted transmission configures self-organized signaling; or the signaling is layer 1 signaling, and the layer 1 signaling is self-organized signaling of the first source transmission node according to the transmission configuration sent by the target transmission node. .
- the layer 2 transmission state maintained by the UE includes one or more of the following: a HARQ-related transmission state; an acknowledgement mode (AM) transmission-related state variable and a timer value; and a non-acknowledgement mode (UM) transmission.
- a HARQ-related transmission state includes one or more of the following: a HARQ-related transmission state; an acknowledgement mode (AM) transmission-related state variable and a timer value; and a non-acknowledgement mode (UM) transmission.
- AM acknowledgement mode
- UM non-acknowledgement mode
- the state information of the layer 2 transmission state that is maintained by the UE is transmitted by the one or more source transmission nodes to the target transmission node; if data forwarding is required, the data that the UE needs to forward is performed by One or more source transport nodes are passed to the target transport node.
- the transmission state of the security-related layer of the UE during the transit node replacement process is maintained by default, and no reset is required.
- the foregoing UE may be the UE in any of the method embodiments in the embodiments of the disclosure, and any implementation manner of the UE in the method embodiment in this disclosure may be used in this embodiment.
- the foregoing UE implements and achieves the same beneficial effects, and details are not described herein again.
- a structure of a transmission node which is a target transmission node, and includes: a processor 1900, a transceiver 1910, a memory 1920, a user interface 1930, and a bus interface, wherein:
- the processor 1900 is configured to read a program in the memory 1920, and perform the following process: receiving, by the transceiver 1910, the UE initiates a random access procedure according to the service node replacement notification, where the service node replacement notification is used to notify the UE and Establishing a connection by the target transmission node; using a transmission configuration of the UE at the target transmission node with the UE on the basis of maintaining all or part of a layer 2 transmission state between the UE and one or more source transmission nodes The transmitting is performed, wherein the source transmitting node is a transmitting node that the UE connects before receiving the service node replacement notification.
- the transceiver 1910 is configured to receive and transmit data under the control of the processor 1900.
- the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 1900 and various circuits of memory represented by memory 1920.
- the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
- the bus interface provides an interface.
- Transceiver 1910 may be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
- the user interface 1930 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
- the processor 1900 is responsible for managing the bus architecture and general processing, and the memory 1920 can store data used by the processor 1900 in performing operations.
- the UE uses the UE's transmission configuration at the target transmission node to transmit with the UE, including Reconciling with the UE by using a transmission configuration of the UE at the target transmission node, where the UE maintains a partial layer 2 transmission state with the source transmission node, wherein the partial layer
- the transmission status is that the indication information carried in the service node replacement notification indicates the layer 2 transmission status that needs to be maintained, or the partial layer 2 transmission status is the layer 2 transmission status that needs to be maintained by default.
- the transmitting, by using the UE, the transmission configuration of the target transmission node and the UE includes: using, at a configuration time point, a transmission configuration of the UE at the target transmission node, and the UE Performing transmission; or transmitting, when the random access procedure is successful, using the transmission configuration of the UE at the target transmission node with the UE.
- the target transmission node is a transmission node that is sent by the UE to the network side device. And configuring a transmission node among the plurality of transmission nodes corresponding to the set, where the transmission node configuration set includes a transmission configuration of the UE at the multiple transmission nodes.
- the processor 1900 is further configured to: receive, by the transceiver 1910, a service node replacement notification sent by the centralized transmission node by using an interface message, where the service node replacement notification sent by the interface message includes one or more of the following: The migration information of the set of serving nodes of the UE; the joining information of the set of serving nodes of the UE; the measurement result of the UE; the transmission configuration of the UE at the target transmission node; the data forwarding information, the data forwarding The information is used to indicate whether data forwarding is required; status indication information is used to indicate whether it is necessary to maintain the layer 2 transmission status, and to indicate all or part of the layer 2 transmission status that needs to be maintained.
- the processor 1900 is further configured to: receive, by the transceiver 1910, a service node replacement request sent by the first source transmission node; determine whether to accept the service node replacement request, and if yes, pass the transceiver 1910 to the The first source transmission node returns an acknowledgment message, where the acknowledgment message includes a transmission configuration of the UE at the target transmission node, where the service node replacement request includes one or more of the following: a measurement result of the UE; a transmission configuration of the UE at the source transmission node; data forwarding information, the data forwarding information is used to indicate whether data forwarding is required; status indication information, and the status indication information is used to indicate whether the layer 2 needs to be maintained.
- the transmission status as well as all or part of the layer 2 transmission status indicating that it needs to be maintained.
- the layer 2 transmission state maintained by the UE includes one or more of the following: a HARQ-related transmission state; an AM transmission-related state variable and a timer value; and a UM transmission-related state variable and a timer value. .
- the processor 1900 is further configured to: receive, by the transceiver 1910, state information of the layer 2 transmission state that is maintained by the UE by one or more source transmission nodes; if data forwarding is required, the processor 1900 further uses And: receiving, by the one or more source transmission nodes, data of the UE that needs to be forwarded.
- the foregoing transmission node may be the target transmission node in any of the embodiments of the method in the embodiment of the disclosure, and any implementation manner of the target transmission node in the method embodiment in the embodiment of the disclosure may be The above-mentioned transmission node in the embodiment is implemented, and the same beneficial effects are achieved, and details are not described herein again.
- the network side device includes: a processor 2000, a transceiver 2010, a memory 2020, a user interface 2030, and a bus interface.
- the processor 2000 is configured to read a program in the memory 2020 and execute the following process: through the transceiver 2010.
- the serving node replacement notification initiates a random access procedure to the target transport node, and the UE is using the UE on the basis of maintaining all or part of the layer 2 transmission state with one or more source transport nodes
- the transmission configuration of the target transmission node is transmitted with a target transmission node, where the target transmission node is one or more transmission nodes, and the one or more source transmission nodes include the first source transmission node, and
- the source transport node is a transport node that the UE connects before receiving the service node replacement notification.
- the transceiver 2010 is configured to receive and transmit data under the control of the processor 2000.
- the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 2000 and various circuits of memory represented by memory 2020.
- the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
- the bus interface provides an interface.
- the transceiver 2010 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
- the user interface 2030 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
- the processor 2000 is responsible for managing the bus architecture and the usual processing, and the memory 2020 can store data used by the processor 2000 in performing operations.
- the service node replacement notification is used to notify the UE to be replaced by the one or more source transmission nodes to the target transmission node; or the service node replacement notification is used to notify the UE to disconnect the connected a connection of a part of the plurality of source transmission nodes and establishing a connection with the target transmission node; or the service node replacement notification is used to notify the UE to add to the connected one or more source transmission nodes The target transmission node.
- the partial layer 2 transmission state is that the indication information carried in the service node replacement notification indicates that the layer 2 transmission state needs to be maintained, or the partial layer 2 transmission state is a default requirement.
- the layer 2 transmission state is maintained.
- the processor 2000 is further configured to: send, by the transceiver 2010, a transmission node configuration set to the UE, where the transmission node configuration set includes A transmission configuration of a UE at a plurality of transmission nodes, wherein the plurality of transmission nodes includes at least the target transmission node.
- the service node replacement notification includes a transmission configuration of the UE at the target transmission node; or the processor 2000 is further configured to: if the first source transmission node determines the UE and a target transmission node A connection is established, and the transmission configuration of the UE at the target transmission node is sent to the UE through the transceiver 2010.
- the service node replacement notification includes one or more of the following: the removal information of the service node set of the UE; the join information of the service node set of the UE; and the transmission configuration of the UE at the target transmission node.
- Data forwarding information the data forwarding information is used to indicate whether data forwarding is required; status indication information, the status indication information is used to indicate whether it is necessary to maintain the layer 2 transmission status, and all or part of the indication needs to be maintained.
- Layer 2 transmission status is used to indicate whether it is necessary to maintain the layer 2 transmission status, and all or part of the indication needs to be maintained.
- the sending the service node replacement notification to the UE includes: sending a signaling to the UE, where the signaling includes the service node replacement notification; wherein the signaling is a radio resource control RRC Signaling, the RRC signaling is sent by the centralized transmission node, and is forwarded by the first source transmission node to the UE by air interface transmission; or the signaling is layer 2 signaling, and the layer 2 signaling
- the signaling that is self-organized by the first source transmission node according to the service node replacement information sent by the centralized transmission node; or the signaling is layer 1 signaling, and the layer 1 signaling is the first source transmission node Signaling organized by the service node replacement information sent by the centralized transmission node.
- the processor 2000 is further configured to: receive, by the transceiver 2010, a service node replacement notification sent by the centralized transmission node by using an interface message, where the service node replacement notification sent by using the interface message includes one or more of the following: Item: the removal information of the service node set of the UE; the join information of the service node set of the UE; the measurement result of the UE; the transmission configuration of the UE at the target transmission node; the data forwarding information, the data The forwarding information is used to indicate whether data forwarding is required; status indication information is used to indicate whether it is necessary to maintain the layer 2 transmission status, and to indicate all or part of the layer 2 transmission status that needs to be maintained.
- the target transmission node is a service section that is sent by the first source transmission node.
- the transmitting node of the UE is admitted, and the target transmitting node returns a transmission configuration of the UE at the target transmitting node to the first source transmitting node after receiving; wherein the serving node
- the replacement request includes one or more of the following: a measurement result of the UE; a transmission configuration of the UE at the source transmission node; data forwarding information, where the data forwarding information is used to indicate whether data forwarding is required;
- the status indication information is used to indicate whether it is necessary to maintain the layer 2 transmission status, and to indicate all or part of the layer 2 transmission status that needs to be maintained.
- the sending the service node replacement notification to the UE includes: sending a signaling to the UE, where the signaling includes the service node replacement notification; wherein the signaling is RRC signaling,
- the RRC signaling is generated by the first source transmission node, and the transmission configuration sent by the target transmission node is placed in the RRC signaling in the form of a container, and the first source transmission node performs air interface transmission.
- the signaling is layer 2 signaling, and the layer 2 signaling is signaling that the first source transmission node organizes itself according to a transmission configuration sent by the target transmission node;
- the signaling is layer 1 signaling, and the layer 1 signaling is signaling that the first source transmission node organizes itself according to a transmission configuration sent by the target transmission node.
- the layer 2 transmission state maintained by the UE includes one or more of the following: a HARQ-related transmission state; an AM transmission-related state variable and a timer value; and a UM transmission-related state variable and a timer value. .
- the state information of the layer 2 transmission state that is maintained by the UE is transmitted by the one or more source transmission nodes to the target transmission node; if data forwarding is required, the data that the UE needs to forward is performed by One or more source transport nodes are passed to the target transport node.
- the foregoing transmission node may be the first source transmission node in any embodiment of the method embodiment in the embodiment of the disclosure, and any implementation of the first source transmission node in the method embodiment in the embodiment of the disclosure
- the method can be implemented by the foregoing source transmission node in this embodiment, and achieve the same beneficial effects, and details are not described herein again.
- the disclosed method and apparatus may be implemented in other manners.
- the device embodiments described above are merely illustrative.
- the division of the unit is only a logical function division.
- there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
- a direct coupling or communication connection may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
- each functional unit in various embodiments of the present disclosure may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit.
- the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
- the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
- the above software functional unit is stored in a storage medium and includes a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform part of the steps of the transceiving method of the various embodiments of the present disclosure.
- the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, and the program code can be stored. Medium.
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Abstract
本公开提供一种传输节点更换方法及相关设备,该方法可包括:用户终端UE接收第一源传输节点发送的服务节点更换通知,其中,所述服务节点更换通知用于通知所述UE与目标传输节点建立连接,所述目标传输节点为一个或者多个传输节点;所述UE根据所述服务节点更换通知向所述目标传输节点发起随机接入过程;所述UE在保持与一个或者多个源传输节点之间的全部或者部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,其中,所述源传输节点为所述UE在接收到所述服务节点更换通知之前连接的传输节点。
Description
相关申请的交叉引用
本申请主张在2016年8月5日在中国提交的中国专利申请号No.201610639367.7的优先权,其全部内容通过引用包含于此。
本公开涉及通信技术领域,特别涉及一种传输节点更换方法及相关设备。
移动通信系统未来发展中,为了更好的满足用户需求,极大提升网络容量和吞吐量,必将会引入更多的传输节点,即未来网络可以理解为超密集网络。在超密集网络中,传输节点之间距离较近,用户在传输节点之间切换的频度较大。然而,目前用户终端(UE,User Equipment)在传输节点之间进行切换时,传输节点之间一般通过X2接口进行交互。而X2接口的时延一般认为在20毫秒左右,因此X2接口切换的时延一般在几十毫秒量级,从而会造成UE数据速度的短暂下降,而且UE内部的层2传输状态需要复位。这样会导致用户体验降低,且网络传输效率不也高。
发明内容
本公开的目的在于提供一种传输节点更换方法及相关设备,解决了网络传输效率不高的问题。
为了达到上述目的,本公开实施例提供一种传输节点更换方法,包括:UE接收第一源传输节点发送的服务节点更换通知,其中,所述服务节点更换通知用于通知所述UE与目标传输节点建立连接,所述目标传输节点为一个或者多个传输节点;所述UE根据所述服务节点更换通知向所述目标传输节点发起随机接入过程;所述UE在保持与一个或者多个源传输节点之间的全部或者部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,其中,所述一个或者多个源传输节点包括所述第一源传输节点,且所述源传输节点为所述UE在接收到所述服务节点更换通知之前连接的传输节点。
可选的,所述服务节点更换通知用于通知所述UE由一个或者多个源传
输节点更换至所述目标传输节点;或者所述服务节点更换通知用于通知所述UE断开已连接的多个源传输节点中部分传输节点的连接,并与所述目标传输节点建立连接;或者所述服务节点更换通知用于通知所述UE在已连接的一个或者多个源传输节点的基础上增加所述目标传输节点。
可选的,所述UE在保持与一个或者多个源传输节点之间的全部或者部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,包括:所述UE在保持与一个或者多个源传输节点之间部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,其中,所述部分层2传输状态为所述服务节点更换通知中携带的指示信息指示需要保持的层2传输状态,或者所述部分层2传输状态为默认需要保持的层2传输状态。
可选的,所述方法还包括:所述UE对除所述部分层2传输状态之外的其他层2传输状态进行复位处理。
可选的,所述使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,包括:在配置时间点,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输;或者在所述随机接入过程成功时,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输。
可选的,在所述UE接收所述第一源传输节点发送的服务节点更换通知之前,所述方法还包括:所述UE接收网络侧设备发送的传输节点配置集合,所述传输节点配置集合包括所述UE在多个传输节点的传输配置,其中,所述多个传输节点至少包括所述目标传输节点。
可选的,所述服务节点更换通知包括所述UE在所述目标传输节点的传输配置;或者,所述方法还包括:若网络侧设备确定决定所述UE与目标传输节点建立连接,所述UE接收所述网络侧设备发送的所述UE在所述目标传输节点的传输配置。
可选的,所述服务节点更换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;UE在所述目标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2
传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述UE接收第一源传输节点发送的所述服务节点更换通知,包括:所述UE接收第一源传输节点发送的一信令,其中,所述信令包括所述服务节点更换通知;其中,所述信令为无线资源控制(Radio Resource Control,RRC)信令,所述RRC信令由集中传输节点发送的,并由所述第一源传输节点进行空口传输转发给所述UE的;或者所述信令为层2信令,所述层2信令为所述第一源传输节点根据集中传输节点发送的服务节点更换信息自行组织的信令;或者所述信令为层1信令,所述层1信令为所述第一源传输节点根据集中传输节点发送的服务节点更换信息自行组织的信令。
可选的,集中传输节点通过接口消息向所述目标传输节点,以及一个或者多个源传输节点发送服务节点更换通知,其中,通过所述接口消息发送的服务节点更换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;UE的测量结果;UE在所述目标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述目标传输节点是接收到所述第一源传输节点发送的服务节点更换请求后,接纳所述UE的传输节点,且所述目标传输节点在接纳后向所述第一源传输节点返回所述UE在所述目标传输节点的传输配置;其中,所述服务节点更换请求包括如下一项或者多项:所述UE的测量结果;所述UE在一个或者多个源传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述UE接收第一源传输节点发送的所述服务节点更换通知,包括:所述UE接收所述第一源传输节点发送的一信令,其中,所述信令包括所述服务节点更换通知;其中,所述信令为RRC信令,所述RRC信令由所述第一源传输节点产生的,将所述目标传输节点发送的传输配置通过容器的形式置于所述RRC信令,并由所述第一源传输节点进行空口传输转发给所
述UE的;或者所述信令为层2信令,所述层2信令为所述第一源传输节点根据所述目标传输节点发送的传输配置自行组织的信令;或者所述信令为层1信令,所述层1信令为所述第一源传输节点根据所述目标传输节点发送的传输配置自行组织的信令。
可选的,所述UE保持的层2传输状态包括如下一项或者多项:混合自动重传请求(Hybrid Automatic Repeat reQuest,HARQ)相关的传输状态;确认模式(AM)传输相关的状态变量和定时器取值;非确认模式(UM)传输相关的状态变量和定时器取值。
可选的,所述UE保持的层2传输状态的状态信息由一个或者多个源传输节点传递给所述目标传输节点;若需要进行数据前转,所述UE的需要进行前转的数据由一个或者多个源传输节点传递给所述目标传输节点。
可选的,所述UE在传输节点更换过程中安全相关的层的传输状态是默认保持,不需要复位。
本公开实施例还提供一种传输节点更换方法,包括:目标传输节点接收UE根据服务节点更换通知发起随机接入过程,其中,所述服务节点更换通知用于通知所述UE与目标传输节点建立连接;在所述UE保持与一个或者多个源传输节点之间的全部或者部分层2传输状态的基础上,所述目标传输节点使用所述UE在所述目标传输节点的传输配置与所述UE进行传输,其中,所述源传输节点为所述UE在接收到所述服务节点更换通知之前连接的传输节点。
可选的,在所述UE保持与所述源传输节点之间的全部或者部分层2传输状态的基础上,所述目标传输节点使用所述UE在所述目标传输节点的传输配置与所述UE进行传输,包括:在所述UE保持与所述源传输节点之间的部分层2传输状态的基础上,所述目标传输节点使用所述UE在所述目标传输节点的传输配置与所述UE进行传输,其中,所述部分层2传输状态为所述服务节点更换通知中携带的指示信息指示需要保持的层2传输状态,或者所述部分层2传输状态为默认需要保持的层2传输状态。
可选的,所述目标传输节点使用所述UE在所述目标传输节点的传输配置与所述UE进行传输,包括:在配置时间点,所述目标传输节点使用所述
UE在所述目标传输节点的传输配置与所述UE进行传输;或者在所述随机接入过程成功时,所述目标传输节点使用所述UE在所述目标传输节点的传输配置与所述UE进行传输。
可选的,所述目标传输节点为所述UE接收网络侧设备发送的传输节点配置集合对应的多个传输节点中的传输节点,所述传输节点配置集合包括所述UE在所述多个传输节点的传输配置。
可选的,所述方法还包括:所述目标传输节点接收集中传输节点通过接口消息发送的服务节点更换通知,其中,通过所述接口消息发送的服务节点更换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;所述UE的测量结果;UE在所述目标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述方法还包括:所述目标传输节点接收所述第一源传输节点发送的服务节点更换请求;所述目标传输节点判断是否接纳所述服务节点更换请求,若是,则向所述第一源传输节点返回确认消息,且所述确认消息包括所述UE在所述目标传输节点的传输配置;其中,所述服务节点更换请求包括如下一项或者多项:所述UE的测量结果;所述UE在所述源传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述UE保持的层2传输状态包括如下一项或者多项:HARQ相关的传输状态;AM传输相关的状态变量和定时器取值;UM传输相关的状态变量和定时器取值。
可选的,所述方法还包括:所述目标传输节点接收一个或者多个源传输节点发送的所述UE保持的层2传输状态的状态信息;若需要进行数据前转,所述方法还包括:所述目标传输节点接收一个或者多个源传输节点发送所述UE的需要进行前转的数据。
本公开实施例还提供一种传输节点更换方法,包括:第一源传输节点向
UE发送服务节点更换通知,其中,所述服务节点更换通知用于通知所述UE与目标传输节点建立连接,所述目标传输节点为一个或者多个传输节点,以使所述UE根据所述服务节点更换通知向所述目标传输节点发起随机接入过程,以及由所述UE在保持与一个或者多个源传输节点之间的全部或者部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,其中,所述目标传输节点为一个或者多个传输节点,所述一个或者多个源传输节点包括所述第一源传输节点,且所述源传输节点为所述UE在接收到所述服务节点更换通知之前连接的传输节点。
可选的,所述服务节点更换通知用于通知所述UE由一个或者多个源传输节点更换至所述目标传输节点;或者所述服务节点更换通知用于通知所述UE断开已连接的多个源传输节点中部分传输节点的连接,并与所述目标传输节点建立连接;或者所述服务节点更换通知用于通知所述UE在已连接的一个或者多个源传输节点的基础上增加所述目标传输节点。
可选的,所述部分层2传输状态为所述服务节点更换通知中携带的指示信息指示需要保持的层2传输状态,或者所述部分层2传输状态为默认需要保持的层2传输状态。
可选的,在所述第一源传输节点向UE发送服务节点更换通知之前,所述方法还包括:所述第一源传输节点向所述UE发送传输节点配置集合,所述传输节点配置集合包括所述UE在多个传输节点的传输配置,其中,所述多个传输节点至少包括所述目标传输节点。
可选的,所述服务节点更换通知包括所述UE在所述目标传输节点的传输配置;或者所述方法还包括:若所述第一源传输节点决定所述UE与目标传输节点建立连接,所述第一源传输节点向所述UE发送所述UE在所述目标传输节点的传输配置。
所述服务节点更换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;UE在所述目标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述第一源传输节点向UE发送服务节点更换通知,包括:所述第一源传输节点向所述UE发送一信令,其中,所述信令包括所述服务节点更换通知;其中,所述信令为RRC信令,所述RRC信令由集中传输节点发送的,并由所述第一源传输节点进行空口传输转发给所述UE的;或者所述信令为层2信令,所述层2信令为所述第一源传输节点根据集中传输节点发送的服务节点更换信息自行组织的信令;或者所述信令为层1信令,所述层1信令为所述第一源传输节点根据集中传输节点发送的服务节点更换信息自行组织的信令。
可选的,所述方法还包括:所述第一源传输节点接收集中传输节点通过接口消息发送的服务节点更换通知,其中,通过所述接口消息发送的服务节点更换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;所述UE的测量结果;UE在所述目标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述目标传输节点是接收到所述第一源传输节点发送的服务节点更换请求后,接纳所述UE的传输节点,且所述目标传输节点在接纳后向所述第一源传输节点返回所述UE在所述目标传输节点的传输配置;其中,所述服务节点更换请求包括如下一项或者多项:所述UE的测量结果;所述UE在所述源传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述第一源传输节点向UE发送服务节点更换通知,包括:所述第一源传输节点向所述UE发送一信令,其中,所述信令包括所述服务节点更换通知;其中,所述信令为RRC信令,所述RRC信令由所述第一源传输节点产生的,将所述目标传输节点发送的传输配置通过容器的形式置于所述RRC信令,并由所述第一源传输节点进行空口传输转发给所述UE的;或者所述信令为层2信令,所述层2信令为所述第一源传输节点根据所述目标传输节点发送的传输配置自行组织的信令;或者所述信令为层1信令,所述
层1信令为所述第一源传输节点根据所述目标传输节点发送的传输配置自行组织的信令。
可选的,所述UE保持的层2传输状态包括如下一项或者多项:HARQ相关的传输状态;AM传输相关的状态变量和定时器取值;UM传输相关的状态变量和定时器取值。
可选的,所述UE保持的层2传输状态的状态信息由一个或者多个源传输节点传递给所述目标传输节点;若需要进行数据前转,所述UE的需要进行前转的数据由一个或者多个源传输节点传递给所述目标传输节点。
本公开实施例还提供一种UE,包括:第一接收模块,用于接收第一源传输节点发送的服务节点更换通知,其中,所述服务节点更换通知用于通知所述UE与目标传输节点建立连接,所述目标传输节点为一个或者多个传输节点;发起模块,用于根据所述服务节点更换通知向所述目标传输节点发起随机接入过程;传输模块,用于在保持与一个或者多个源传输节点之间的全部或者部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,其中,所述一个或者多个源传输节点包括所述第一源传输节点,且所述源传输节点为所述UE在接收到所述服务节点更换通知之前连接的传输节点。
可选的,所述服务节点更换通知用于通知所述UE由一个或者多个源传输节点更换至所述目标传输节点;或者所述服务节点更换通知用于通知所述UE断开已连接的多个源传输节点中部分传输节点的连接,并与所述目标传输节点建立连接;或者所述服务节点更换通知用于通知所述UE在已连接的一个或者多个源传输节点的基础上增加所述目标传输节点。
可选的,所述传输模块用于在保持与一个或者多个源传输节点之间部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,其中,所述部分层2传输状态为所述服务节点更换通知中携带的指示信息指示需要保持的层2传输状态,或者所述部分层2传输状态为默认需要保持的层2传输状态。
可选的,所述UE还包括:复位模块,用于对除所述部分层2传输状态之外的其他层2传输状态进行复位处理。
可选的,所述传输模块用于在配置时间点,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输;或者所述传输模块用于在所述随机接入过程成功时,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输。
可选的,所述UE还包括:第二接收模块,用于接收网络侧设备发送的传输节点配置集合,所述传输节点配置集合包括所述UE在多个传输节点的传输配置,其中,所述多个传输节点至少包括所述目标传输节点。
可选的,所述服务节点更换通知包括所述UE在所述目标传输节点的传输配置;或者,所述UE还包括:第三接收模块,用于若网络侧设备决定所述UE与目标传输节点建立连接,接收所述网络侧设备发送的所述UE在所述目标传输节点的传输配置。
可选的,所述服务节点更换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;UE在所述目标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述第一接收模块用于接收第一源传输节点发送的一信令,其中,所述信令包括所述服务节点更换通知;其中,所述信令为无线资源控制RRC信令,所述RRC信令由集中传输节点发送的,并由所述第一源传输节点进行空口传输转发给所述UE的;或者所述信令为层2信令,所述层2信令为所述第一源传输节点根据集中传输节点发送的服务节点更换信息自行组织的信令;或者所述信令为层1信令,所述层1信令为所述第一源传输节点根据集中传输节点发送的服务节点更换信息自行组织的信令。
可选的,集中传输节点通过接口消息向所述目标传输节点,以及一个或者多个源传输节点发送服务节点更换通知,其中,通过所述接口消息发送的服务节点更换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;UE的测量结果;UE在所述目标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2
传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述目标传输节点是接收到所述第一源传输节点发送的服务节点更换请求后,接纳所述UE的传输节点,且所述目标传输节点在接纳后向所述第一源传输节点返回所述UE在所述目标传输节点的传输配置;其中,所述服务节点更换请求包括如下一项或者多项:所述UE的测量结果;所述UE在一个或者多个源传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述第一接收模块用于接收所述第一源传输节点发送的一信令,其中,所述信令包括所述服务节点更换通知;其中,所述信令为RRC信令,所述RRC信令由所述第一源传输节点产生的,将所述目标传输节点发送的传输配置通过容器的形式置于所述RRC信令,并由所述第一源传输节点进行空口传输转发给所述UE的;或者所述信令为层2信令,所述层2信令为所述第一源传输节点根据所述目标传输节点发送的传输配置自行组织的信令;或者所述信令为层1信令,所述层1信令为所述第一源传输节点根据所述目标传输节点发送的传输配置自行组织的信令。
可选的,所述UE保持的层2传输状态包括如下一项或者多项:HARQ相关的传输状态;AM传输相关的状态变量和定时器取值;UM传输相关的状态变量和定时器取值。
可选的,所述UE保持的层2传输状态的状态信息由一个或者多个源传输节点传递给所述目标传输节点;若需要进行数据前转,所述UE的需要进行前转的数据由一个或者多个源传输节点传递给所述目标传输节点。
可选的,所述UE在传输节点更换过程中安全相关的层的传输状态是默认保持,不需要复位。
本公开实施例还提供一种传输节点,所述传输节点为目标传输节点,包括:第一接收模块,用于接收UE根据服务节点更换通知发起随机接入过程,其中,所述服务节点更换通知用于通知所述UE与目标传输节点建立连接;传输模块,用于在所述UE保持与一个或者多个源传输节点之间的全部或者
部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与所述UE进行传输,其中,所述源传输节点为所述UE在接收到所述服务节点更换通知之前连接的传输节点。
可选的,所述传输模块用于在所述UE保持与所述源传输节点之间的部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与所述UE进行传输,其中,所述部分层2传输状态为所述服务节点更换通知中携带的指示信息指示需要保持的层2传输状态,或者所述部分层2传输状态为默认需要保持的层2传输状态。
可选的,所述传输模块用于在配置时间点,使用所述UE在所述目标传输节点的传输配置与所述UE进行传输;或者所述传输模块用于在所述随机接入过程成功时,使用所述UE在所述目标传输节点的传输配置与所述UE进行传输。
可选的,所述目标传输节点为所述UE接收网络侧设备发送的传输节点配置集合对应的多个传输节点中的传输节点,所述传输节点配置集合包括所述UE在所述多个传输节点的传输配置。
可选的,所述传输节点还包括:第二接收模块,用于接收集中传输节点通过接口消息发送的服务节点更换通知,其中,通过所述接口消息发送的服务节点更换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;所述UE的测量结果;UE在所述目标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述传输节点还包括:第三接收模块,用于接收所述第一源传输节点发送的服务节点更换请求;返回模块,用于判断是否接纳所述服务节点更换请求,若是,则向所述第一源传输节点返回确认消息,所述确认消息包括所述UE在所述目标传输节点的传输配置;其中,所述服务节点更换请求包括如下一项或者多项:所述UE的测量结果;所述UE在所述源传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以
及指示需要保持的全部或者部分的层2传输状态。
可选的,所述UE保持的层2传输状态包括如下一项或者多项:HARQ相关的传输状态;AM传输相关的状态变量和定时器取值;UM传输相关的状态变量和定时器取值。
可选的,所述传输节点还包括:第四接收模块,用于接收一个或者多个源传输节点发送的所述UE保持的层2传输状态的状态信息;若需要进行数据前转,所述传输节点还包括:第五接收模块,用于接收一个或者多个源传输节点发送所述UE的需要进行前转的数据。
本公开实施例还提供一种传输节点,所述传输节点为第一源传输节点,包括:第一发送模块,用于向UE发送服务节点更换通知,其中,所述服务节点更换通知用于通知所述UE与目标传输节点建立连接,所述目标传输节点为一个或者多个传输节点,以使所述UE根据所述服务节点更换通知向所述目标传输节点发起随机接入过程,以及由所述UE在保持与一个或者多个源传输节点之间的全部或者部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,其中,所述目标传输节点为一个或者多个传输节点,所述一个或者多个源传输节点包括所述第一源传输节点,且所述源传输节点为所述UE在接收到所述服务节点更换通知之前连接的传输节点。
可选的,所述服务节点更换通知用于通知所述UE由一个或者多个源传输节点更换至所述目标传输节点;或者所述服务节点更换通知用于通知所述UE断开已连接的多个源传输节点中部分传输节点的连接,并与所述目标传输节点建立连接;或者所述服务节点更换通知用于通知所述UE在已连接的一个或者多个源传输节点的基础上增加所述目标传输节点。
可选的,所述部分层2传输状态为所述服务节点更换通知中携带的指示信息指示需要保持的层2传输状态,或者所述部分层2传输状态为默认需要保持的层2传输状态。
可选的,所述传输节点还包括:第二发送模块,用于向所述UE发送传输节点配置集合,所述传输节点配置集合包括所述UE在多个传输节点的传输配置,其中,所述多个传输节点至少包括所述目标传输节点。
可选的,所述服务节点更换通知包括所述UE在所述目标传输节点的传输配置;或者所述传输节点还包括:第三发送模块,用于若所述第一源传输节点决定确定通知所述UE与目标传输节点建立连接,向所述UE发送所述UE在所述目标传输节点的传输配置。
可选的,所述服务节点更换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;UE在所述目标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述第一发送模块用于向所述UE发送一信令,其中,所述信令包括所述服务节点更换通知;其中,所述信令为无线资源控制RRC信令,所述RRC信令由集中传输节点发送的,并由所述第一源传输节点进行空口传输转发给所述UE的;或者所述信令为层2信令,所述层2信令为所述第一源传输节点根据集中传输节点发送的服务节点更换信息自行组织的信令;或者所述信令为层1信令,所述层1信令为所述第一源传输节点根据集中传输节点发送的服务节点更换信息自行组织的信令。
可选的,所述传输节点还包括:接收模块,用于接收集中传输节点通过接口消息发送的服务节点更换通知,其中,通过所述接口消息发送的服务节点更换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;所述UE的测量结果;UE在所述目标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述目标传输节点是接收到所述第一源传输节点发送的服务节点更换请求后,接纳所述UE的传输节点,且所述目标传输节点在接纳后向所述第一源传输节点返回所述UE在所述目标传输节点的传输配置;其中,所述服务节点更换请求包括如下一项或者多项:所述UE的测量结果;所述UE在所述源传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要
保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述第一发送模块用于向所述UE发送一信令,其中,所述信令包括所述服务节点更换通知;其中,所述信令为RRC信令,所述RRC信令由所述第一源传输节点产生的,将所述目标传输节点发送的传输配置通过容器的形式置于所述RRC信令,并由所述第一源传输节点进行空口传输转发给所述UE的;或者所述信令为层2信令,所述层2信令为所述第一源传输节点根据所述目标传输节点发送的传输配置自行组织的信令;或者所述信令为层1信令,所述层1信令为所述第一源传输节点根据所述目标传输节点发送的传输配置自行组织的信令。
可选的,所述UE保持的层2传输状态包括如下一项或者多项:HARQ相关的传输状态;AM传输相关的状态变量和定时器取值;UM传输相关的状态变量和定时器取值。
可选的,所述UE保持的层2传输状态的状态信息由一个或者多个源传输节点传递给所述目标传输节点;若需要进行数据前转,所述UE的需要进行前转的数据由一个或者多个源传输节点传递给所述目标传输节点。
本公开实施例还提供一种用户终端UE,包括:处理器、收发机、存储器,其中:所述处理器用于读取存储器中的程序,执行下列过程:通过收发机接收第一源传输节点发送的服务节点更换通知,其中,所述服务节点更换通知用于通知所述UE与目标传输节点建立连接,所述目标传输节点为一个或者多个传输节点;通过收发机根据所述服务节点更换通知向所述目标传输节点发起随机接入过程;在保持与一个或者多个源传输节点之间的全部或者部分层2(L2)传输状态的基础上,通过收发机使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,其中,所述一个或者多个源传输节点包括所述第一源传输节点,且所述源传输节点为所述UE在接收到所述服务节点更换通知之前连接的传输节点;所述收发机用于接收和发送数据。
本公开实施例还提供一种传输节点,包括:处理器、收发机、存储器,其中:所述处理器用于读取存储器中的程序,执行下列过程:通过收发机接收用户终端UE根据服务节点更换通知发起随机接入过程,其中,所述服务节点更换通知用于通知所述UE与目标传输节点建立连接;在所述UE保持与
一个或者多个源传输节点之间的全部或者部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与所述UE进行传输,其中,所述源传输节点为所述UE在接收到所述服务节点更换通知之前连接的传输节点,所述收发机用于接收和发送数据。
本公开实施例还提供一种传输节点,包括:处理器、收发机、存储器,其中:所述处理器用于读取存储器中的程序,执行下列过程:通过收发机向用户终端UE发送服务节点更换通知,其中,所述服务节点更换通知用于通知所述UE与目标传输节点建立连接,所述目标传输节点为一个或者多个传输节点,以使所述UE根据所述服务节点更换通知向所述目标传输节点发起随机接入过程,以及由所述UE在保持与一个或者多个源传输节点之间的全部或者部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,其中,所述目标传输节点为一个或者多个传输节点,所述一个或者多个源传输节点包括所述第一源传输节点,且所述源传输节点为所述UE在接收到所述服务节点更换通知之前连接的传输节点,所述收发机用于接收和发送数据。
本公开的上述技术方案至少具有如下有益效果:本公开实施例中,UE接收第一源传输节点发送的服务节点更换通知,其中,所述服务节点更换通知用于通知所述UE与目标传输节点建立连接;所述UE根据所述服务节点更换通知向所述目标传输节点发起随机接入过程;所述UE在保持与一个或者多个源传输节点之间的全部或者部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输。这样可以实现UE和目标传输节点在是保持的传输状态的基础上进行传输,相比相关技术中需要复位层2传输状态,本公开实施例可以提高网络传输效率。
图1为本公开实施例可应用的网络结构的示意图;
图2为本公开实施例的一种传输节点更换方法的流程示意图;
图3为本公开实施例的另一种传输节点更换方法的流程示意图;
图4为本公开实施例的另一种传输节点更换方法的流程示意图;
图5为本公开实施例的另一种传输节点更换方法的示意图;
图6为本公开实施例的另一种传输节点更换方法的示意图;
图7为本公开实施例的一种UE的结构示意图;
图8为本公开实施例的另一种UE的结构示意图;
图9为本公开实施例的另一种UE的结构示意图;
图10为本公开实施例的另一种UE的结构示意图;
图11为本公开实施例的一种传输节点的结构示意图;
图12为本公开实施例的另一种传输节点的结构示意图;
图13为本公开实施例的另一种传输节点的结构示意图;
图14为本公开实施例的另一种传输节点的结构示意图;
图15为本公开实施例的另一种传输节点的结构示意图;
图16为本公开实施例的另一种传输节点的结构示意图;
图17a为本公开实施例的另一种传输节点的结构示意图;
图17b为本公开实施例的另一种传输节点的结构示意图;
图18为本公开实施例的另一种UE的结构示意图;
图19为本公开实施例的另一种传输节点的结构示意图;
图20为本公开实施例的另一种传输节点的结构示意图。
为使本公开要解决的技术问题、技术方案和优点更加清楚,下面将结合附图及具体实施例进行详细描述。
参见图1,图1为本公开实施例可应用的网络结构的示意图,如图1所示,包括UE11、源传输节点12、目标传输节点13和网络侧设备14,其中,UE11可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)、个人数字助理(personal digital assistant,简称PDA)、移动上网装置(Mobile Internet Device,MID)或可穿戴式设备(Wearable Device)等终端侧设备,需要说明的是,在本公开实施例中并不限定终端11的具体类型。上述源传输节点12可以是已经和UE11建立有连接的传输节点,且可以是一个或者多个源传输节点,附图中以一个进行举例。上述目标传输节点13是UE11接收到服务节点更换通知后需要建立连接的传输节点,也可以是一个或者多个传输节点,附图中以一个进行举例。另外,上述网络侧设备14可以是
一集中传输节点(Central Unit,CU),或者上述网络侧设备14可以是UE11的一个或者多个源传输节点12中的一个。另外,本公开实施例中,传输节点可以理解为传输发送节点(TRP),该节点可以是具备完整的协议的传输节点,例如:基站,或者上述该节点可以是只具备层1和/或层2的传输节点,当然,也可以是具备层3的传输节点等。需要说明的是,在本公开实施例中并不限定传输节点的具体类型。
请参阅图2,本公开实施例提供一种传输节点更换方法,如图2所示,包括以下步骤:201、UE接收第一源传输节点发送的服务节点更换通知,其中,所述服务节点更换通知用于通知所述UE与目标传输节点建立连接,所述目标传输节点为一个或者多个传输节点;202、UE根据所述服务节点更换通知向所述目标传输节点发起随机接入过程;203、UE在保持与一个或者多个源传输节点之间的全部或者部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,其中,所述一个或者多个源传输节点包括所述第一源传输节点,且所述源传输节点为所述UE在接收到所述服务节点更换通知之前连接的传输节点。
其中,上述第一源传输节点可以是上述UE的一个或者多个源传输节点中的任意一个。另外,上述目标传输节点可以是一个或者多个传输节点,即上述服务节点更换通知用于通知UE与这一个或者多个传输节点建立连接。另外,该服务节点更换通知还可以通知UE断开一个或者多个源传输节点,当然,这里断开的源传输节点可以是UE已连接的源传输节点中的全部或者部分。另外,一些场景中也可以是不断开任何源传输节点,只是增加上述目标传输节点。
当UE接收到上述服务节点更换通知就可以向目标传输节点发起随机接入过程,与目标传输节点建立连接。其中,UE可以是根据预先配置的或者上述通知里携带的专用随机接入码(Preamble),向目标传输节点发起随机接入过程,以向实现目标传输节点发起同步接入。当然,这里并不限定只能是通过专用Preamble发起随机接入过程,可以通过其他上行配置资源发起随机接入过程等,对此本公开实施例不作限定。
另外,所述UE与所述目标传输节点建立连接可以是由网络侧设备决定
的,且网络侧设备向所述第一源传输节点发送通知,以通知UE与所述目标传输节点建立连接,第一源传输节点接收到该通知时就可以向UE发送步骤201中接收到服务节点更换通知。当然,一些场景中,上述网络侧设备可以是上述第一源传输节点,或者上述网络侧设备可以是集中传输节点。
另外,上述UE在保持与一个或者多个源传输节点之间的全部或者部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输可以是,UE与目标传输节点进行传输时以上述保持的层2传输状态为传输起始状态进行传输,或者可以是UE与目标传输节点进行传输时在上述保持的层2传输状态上进行累加传输,例如:配置了UE的某条承载其L2状态是保持的,则UE和目标传输节点可以基于当前的状态变量进行累加处理,例如传输数据已经到序列号(Serial Number,SN)=9,则接着可以传输数据SN=10。另外,UE需要保持的层2传输状态可以是预先配置的或者上述服务节点更换通知中指示的。或者上述UE在保持与一个或者多个源传输节点之间的全部或者部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输可以是,UE保持层2传输状态信息的连续,目标传输节点可以基于最新的UE层2传输状态提供接续的传输服务。这样避免UE全部状态信息复位和传输速率的下降,最终提高网络传输效率和用户的体验。另外,本公开实施例中,保持的层2传输状态可以是层2HARQ以上功能的状态信息。
另外,与UE连接的传输节点也可以理解为UE的服务节点,例如:在接到上述通知前UE的服务节点就包括上述源传输节点,而当UE与目标传输节点建立连接后,UE的服务节点就包括上述目标传输节点。另外,由于上述通知可以是通知UE增加目标传输节点,或者只修改部分服务节点,即在UE与目标传输节点建立连接后,UE的服务节点可以包括目标传输节点,也可以包括没有变换的源传输节点。
可选的,所述服务节点更换通知用于通知所述UE由一个或者多个源传输节点更换至所述目标传输节点;或者
所述服务节点更换通知用于通知所述UE断开已连接的多个源传输节点中部分传输节点的连接,并与所述目标传输节点建立连接;或者
所述服务节点更换通知用于通知所述UE在已连接的一个或者多个源传输节点的基础上增加所述目标传输节点。
其中,上述所述UE由一个或者多个源传输节点更换至所述目标传输节点可以理解为,UE从上述一个或者多个源传输节点切换至上述目标传输节点,其中,上述一个或者多个源传输节点可以是UE在接收到上述通知之前已经连接的所有传输节点。
另外,上述UE断开已连接的多个源传输节点中部分传输节点的连接,并与所述目标传输节点建立连接可以是,UE放弃或者删除已经连接的多个源传输节点中部分源传输节点的连接,并与上述目标传输节点建立连接。例如:UE的源传输节点包括节点1和节点2,而上述目标传输节点为节点3和节点4,且上述通知用于通知UE断开与节点1的连接,从而UE接收到上述通知后,UE与节点1之间的连接就会中断或者删除,并与节点3和节点4建立连接,且保持与节点2的连接。
上述UE在已连接的一个或者多个源传输节点的基础上增加所述目标传输节点可以是,UE保持已连接的所有源传输节点,并与目标传输节点建立连接。
可选的,上述UE在保持与一个或者多个源传输节点之间的全部或者部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,包括:
所述UE在保持与一个或者多个源传输节点之间部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,其中,所述部分层2传输状态为所述服务节点更换通知中携带的指示信息指示需要保持的层2传输状态,或者所述部分层2传输状态为默认需要保持的层2传输状态。
该实施方式中,可以实现UE只保持与上述一个或者多个源传输节点之间的部分层2传输状态,在该保持的层2传输状态的基础上与目标传输节点进行传输。另外,上述部分层2传输状态可以是默认需要保持的层2传输状态,其中,默认需要保持的层2传输状态可以是预先配置的。或者上述部分层2传输状态可以是服务节点更换通知中携带的指示信息指示,即哪些层2
传输状态需要保持可以由上述网络侧设备决定。
可选的,该实施方式中,所述方法还包括:所述UE对除所述部分层2传输状态之外的其他层2传输状态进行复位处理。
该实施方式中,可以实现保持部分层2传输状态,而对其余的L2传输状态进行复位处理。例如:如果配置了UE的某条承载其L2传输状态是保持的,则UE和目标传输节点可以基于当前的状态变量进行累加处理,例如传输数据已经到SN=9,则接着可以传输数据SN=10;而当配置了UE的某条承载其L2状态是不需要保持的,则UE复位L2传输状态,重新从初始值开始,而目标传输节点新建立L2实体,同样从初始值开始。L2传输状态也可以部分复位,部分保持,例如MAC状态复位,无线链路控制(RLC,Radio Link Control)状态保持。
可选的,所述UE在传输节点更换过程中安全相关的层的传输状态是默认保持,不需要复位。例如分组数据汇聚协议(Packet Data Convergence Protocol,PDCP)层的相关操作和状态是需要保持。
可选的,所述使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,包括:在配置时间点,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输;或者在所述随机接入过程成功时,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输。
其中,上述配置时间点可以是上述服务节点更换通知中配置的,或者网络侧设备预先配置给上述UE。通过该配置时间点就可以实现UE与目标传输节点之间以特定的时间点开始同步。另外,该实施方式中,还可以实现UE与目标传输节点之间以随机接入过程的成功作为新配置同步生效的时间点。
可选的,在所述UE接收所述第一源传输节点发送的服务节点更换通知之前,所述方法还包括:所述UE接收网络侧设备发送的传输节点配置集合,所述传输节点配置集合包括所述UE在多个传输节点的传输配置,其中,所述多个传输节点至少包括所述目标传输节点。
其中,上述网络侧设备可以是集中传输节点或者上述第一源传输节点,上述传输节点配置集合可以是将有可能够为上述UE提供服务的传输节点的传输配置,即通过上述传输节点配置集合将有可能为UE提供服务的传输节
点的相关传输配置都配置给UE,以便于进行动态选择。其中,上述传输节点配置集合可以通过如下任意一种或者多种方式确定:
根据UE的测量上报结果,挑选满足信号接收门限的传输节点,或者信道条件最好的N个传输节点,作为UE的传输节点配置集合;
网络侧设备自行根据UE上行信号,例如:随机接入信道(Random Access Channel,RACH)随机接入码(Preamble)或者其它上行信号,例如上行导频信号等在各个传输节点的接收强度,挑选满足门限或者信道条件最好的N个,作为UE的传输节点配置集合;
网络侧设备还可以根据UE当前的服务传输节点,以及服务传输节点周围部署的邻传输节点的物理位置,可选的考虑预测UE的移动轨迹,来为UE决定传输节点配置集合。
其中,上述传输节点配置集合可以包含如下一项或者多项:传输节点标识,传输节点相关的传输配置、传输节点的天线配置和传输节点的物理层配置。
另外,也可以包含少量的层二配置(例如:定时器等),还可以包含与传输节点相关的UE专用资源配置,例如给UE预留的专用上行控制信道配置,上行Preamble等。
另外,传输节点配置集合中还可以包含测量相关的配置,例如对于配置集合内的传输节点测量采取什么样的参数、滤波因子、上报周期和触发条件等。当然,也可以对配置集合中的激活传输节点,有单独的测量配置,其中,激活传输节点可以理解为当前为UE服务的传输节点。
另外,还可以对上述传输节点配置集合进行变更,例如:当UE进入连接态之后,会有一个初始的传输节点配置集合的配置,也不排除该配置集合中只有UE当前服务传输节点的情况,即可能集合中仅有一个传输节点的传输配置;后续根据测量结果的不断收集,网络侧设备可以将新的满足传输要求的传输节点加入到配置集合中去;也可以根据UE位置的远离或者传输节点本身状态,例如负荷过高或者覆盖调整甚至因为节能等原因进行关闭,将不再满足备选传输要求的TRP的配置从配置集合中删除;当UE进行状态转换,例如从连接态进入空闲态或者是非激活状态时,网络侧设备可以将UE
的传输节点配置集合进行删除。
另外,本公开实施例中,关于UE的传输节点配置集合的维护,其判断准则是略为宽松的。例如:即使某一传输节点当前并不是UE信道条件最好的,有可能不会立即参与UE的数据传输,只是后续有可能进行传输,也可以将该传输节点加入配置集合中,以便于UE移动到离该传输节点距离近的时候,可以直接使用该传输节点进行传输免除配置过程。相当于上述传输节点配置集合是备选的UE服务集合,而当前为UE提供服务的传输节点可能只占其中的部分传输节点。
另外,上述UE还可以通过L3即RRC信令过程获取到上述传输节点配置集合,当然,也可以通过层1或者层2信令获取上述传输节点配置集合。
可选的,上述服务节点更换通知包括所述UE在所述目标传输节点的传输配置。
或者,所述方法还包括:若网络侧设备决定所述UE与目标传输节点建立连接,所述UE接收所述网络侧设备发送的所述UE在所述目标传输节点的传输配置。
该实施方式中,可以实现为上述UE单独配置UE在上述目标传输节点的传输配置。例如:UE进入连接态之后,网络侧设备配置给UE专用的测量,对UE的当前服务传输节点(即源传输节点)和邻传输节点进行测量;当UE当前服务的传输节点信号质量变差或者邻传输节点的信号质量变好的情况下,UE上报相应的测量结果给网络侧设备,网络侧设备对UE的当前服务传输节点进行重配置,将新传输节点(即上述目标传输节点)的传输配置发送给UE,删除旧传输节点的配置,并使UE在新传输节点(即上述目标传输节点)开始工作。
当然,更换传输节点的行为也可以受到其他因素的触发,例如网络侧设备发现UE的原服务小区因为负荷过大,或者是需要变更覆盖范围、因为节能等原因需要暂时关闭等,网络侧设备可以自行触发为UE更换服务传输节点以及传输相关的配置。
上述若所述网络侧设备确定通知所述UE与目标传输节点建立连接,UE接收所述网络侧设备发送的所述UE在所述目标传输节点的传输配置可以理
解为,若网络侧设备测量到目标传输节点满足为UE提供服务的要求,向UE发送UE在所述目标传输节点的传输配置。
当然,上述举例仅是以UE只有一个服务传输节点为例的,而本公开实施例中,UE是可以有多个源传输节点,以及上述目标传输节点也可以是多个,当是多个,具体过程是类似的,不再重复举例。另外,当根据测量结果报告或者传输节点的状态,网络侧设备判断当前服务传输节点集合(即多个源传输节点)中有不再适合担任服务的传输节点,则可以将其删除,当有新的传输节点满足服务要求,可以将新的传输节点及其配置通过上述通知或者其他信令配置给UE,当然删除和添加过程可以同时进行也可以分别进行。
另外,上述目标传输节点的传输配置可以是过L3即RRC信令过程获取到上述传输节点配置集合,当然,也可以通过层1或者层2信令获取上目标传输节点的传输配置。
可选的,所述服务节点更换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;UE在所述目标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
其中,上述服务节点集合可以理解为上述UE提供服务的传输节点的集合,另外,在服务节点更换前上述服务节点集合就包括UE的源传输节点,而在服务节点更换后上述服务节点集合就包括UE没有删除的源传输节点和上述目标传输节点。上述移出信息可以理解为将哪些源传输节点移出服务节点集合,其中移出的源传输节点会断开与UE的连接。上述加入信息可以理解为将哪传输节点加入服务节点集合,即表示将上述目标传输节点加入UE的服务节点集合。
可选的,所述UE接收第一源传输节点发送的所述服务节点更换通知,包括:所述UE接收第一源传输节点发送的一信令,其中,所述信令包括所述服务节点更换通知;其中,所述信令为RRC信令,所述RRC信令由集中传输节点发送的,并由所述第一源传输节点进行空口传输转发给所述UE的;或者所述信令为层2信令,所述层2信令为所述第一源传输节点根据集中传
输节点发送的服务节点更换信息自行组织的信令;或者所述信令为层1信令,所述层1信令为所述第一源传输节点根据集中传输节点发送的服务节点更换信息自行组织的信令。
该实施方式中,上述集中传输节点可以理解为网络侧设备,例如:决定UE与目标传输节点建立连接的网络侧设备。另外,该实施方式中,可以通过RRC信令、L2信令或者L1信令接收到上述服务节点更换通知。其中,层1信令为物理层命令,即通过该命令通知UE发起随机接入过程,上述服务节点更换通知中可以包含目标传输节点的ID或目标传输节点下的beam ID、随机接入码(Preamble)和随机接入时频资源(PRACH资源)等。
另外,当UE预先配置有上述传输节点配置集合,即UE已经提前获得了目标传输节点的相关传输配置,那么,上述服务节点更换通知就可以只需要告知UE目标传输节点的标识或其它简单信息,而可以不包括UE在所述目标传输节点的传输配置,且上述服务节点更换通知使用L2信令或L1信令通知UE。当UE预先没有获取到UE在所述目标传输节点的传输配置,则上述通知中需要包括UE在所述目标传输节点的传输配置,例如:给UE配置全套的目标TRP的相关传输配置,且该通知可以通过RRC信令进行通知,这样通知的传输配置更有保障。
可选的,集中传输节点通过接口消息向所述目标传输节点,以及一个或者多个源传输节点发送服务节点更换通知,其中,通过所述接口消息发送的服务节点更换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;UE的测量结果;UE在所述目标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
其中,上述集中传输节点可以理解为网络侧设备,例如:决定UE与目标传输节点建立连接的网络侧设备。集中传输节点可以向源传输节点和目标传输节点发送的上述服务节点更换通知与步骤201接收到的通知的内容可以是相同的,也可以是不相同。
另外,上述测量结果可以是包括传输信道强度或者传输信道质量等测量
结果,另外,测量结果可以对上述目标传输节点,以及还可以包括上述源传输节点的测量结果。
由于实施方式中,可以集中传输节点还向所述目标传输节点和所述源传输节点发送所述服务节点更换通知,这样就可以实现服务节点变更由集中传输节点发送至涉及到的各个传输节点。
可选的,在上述实施方式中,所述目标传输节点是接收到所述第一源传输节点发送的服务节点更换请求后,接纳所述UE的传输节点,且所述目标传输节点在接纳后向所述第一源传输节点返回所述UE在所述目标传输节点的传输配置;
其中,所述服务节点更换请求包括如下一项或者多项:所述UE的测量结果;所述UE在一个或者多个源传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
该实施方式中,第一源传输节点可以理解为网络侧设备,或者可以是UE与目标传输节点建立连接可以是由第一源传输节点决定。当然,UE就一个源传输节点,那么,该源传输节点就是上述网络侧设备。当UE有多个源传输节点时,那么,这多个源传输节点中可以是其中优选的第一源传输节点作为上述网络侧设备,即优选其中一个源传输节点作为网络侧设备,进行后续流程。一般来说作为上述第一源传输节点可以是到UE的空口信道质量较好,或者回程链路质量较好,或者保存UE完整信息的,或者是此次更新之后仍旧能保留作为UE的服务TRP的节点。
另外,上述作为网络侧设备的源传输节点决定UE的服务节点更换时,可以向目标传输节点发送上述服务节点更换请求,且在目标传输节点接纳更换后,再发起更换流程。
另外,上述目标传输节点向源传输节点返回的UE在所述目标传输节点的传输配置可以包括UE在目标传输节点的专用Preamble或者其他配置。另外,当UE预先配置有上述传输节点配置集合时,目标传输节点向源传输节点返回的UE在所述目标传输节点的传输配置可以只包括部分配置,或者包
括在上述传输节点配置集合中不包括的配置。
该实施方式中,由在服务节点更换流程中,更换的决策由源传输节点进行决策,而不是上报到CU进行集中处理,从而可以快捷实现服务节点的更换,且信令简单和时延少。
可选的,上述实施方式中,所述UE接收第一源传输节点发送的所述服务节点更换通知,包括:所述UE接收所述第一源传输节点发送的一信令,其中,所述信令包括所述服务节点更换通知;其中,所述信令为RRC信令,所述RRC信令由所述第一源传输节点产生的,将所述目标传输节点发送的传输配置通过容器的形式置于所述RRC信令,并由所述第一源传输节点进行空口传输转发给所述UE的;或者所述信令为层2信令,所述层2信令为所述第一源传输节点根据所述目标传输节点发送的传输配置自行组织的信令;或者所述信令为层1信令,所述层1信令为所述第一源传输节点根据所述目标传输节点发送的传输配置自行组织的信令。
该实施方式中,第一源传输节点可以理解为网络侧设备,或者可以是UE与目标传输节点建立连接可以是由第一源传输节点决定。以及可以实现通过RRC信令、L2信令或者L1信令接收到上述服务节点更换通知。其中,层1信令为物理层命令,即通过该命令通知UE发起随机接入过程,上述服务节点更换通知中可以包含目标传输节点的ID或目标传输节点下的beam ID、随机接入码(Preamble)和随机接入时频资源(PRACH资源)等。
同理,当UE预先配置有上述传输节点配置集合,即UE已经提前获得了目标传输节点的相关传输配置,那么,上述服务节点更换通知就可以只需要告知UE目标传输节点的标识或其它简单信息,而可以不包括UE在所述目标传输节点的传输配置,且上述服务节点更换通知使用L2信令或L1信令通知UE。当UE预先没有获取到UE在所述目标传输节点的传输配置,则上述通知中需要包括UE在所述目标传输节点的传输配置,例如:给UE配置全套的目标TRP的相关传输配置,且该通知可以通过RRC信令进行通知,这样通知的传输配置更有保障。
可选的,上述UE保持的层2传输状态包括如下一项或者多项:HARQ相关的传输状态;AM传输相关的状态变量和定时器取值;UM传输相关的
状态变量和定时器取值。
当然,本公开实施例中也不排队其他的传输状态,对此本公开实施例不作限定。
可选的,上述UE保持的层2传输状态的状态信息由一个或者多个源传输节点传递给所述目标传输节点;若需要进行数据前转,所述UE的需要进行前转的数据由一个或者多个源传输节点传递给所述目标传输节点。
该实施方式中,可以实现UE保持的层2传输状态由上述一个或者多个源传输节点传递给目标传输节点,从而使目标传输节点在这些层2传输状态的基础上与UE进行传输。且需要进行数据前转时,由上述一个或者多个源传输节点将前转的数据传递给目标传输节点,以实现数据的前转。
需要说明的是,本实施例中提供的多种可选的实施方式,可以相互结合实现,也可以单独实现,对此本公开实施例不作限定。
本公开实施例,UE接收第一源传输节点发送的服务节点更换通知,其中,所述服务节点更换通知用于通知所述UE与目标传输节点建立连接;所述UE根据所述服务节点更换通知向所述目标传输节点发起随机接入过程;所述UE在保持与一个或者多个源传输节点之间的全部或者部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输。这样可以实现UE和目标传输节点在是保持的传输状态的基础上进行传输,相比相关技术中需要复位层2传输状态,从而本公开实施例可以提高网络传输效率。
请参阅图3,本公开实施例提供另一种传输节点更换方法,如图3所示,包括以下步骤:301、目标传输节点接收UE根据服务节点更换通知发起随机接入过程,其中,所述服务节点更换通知用于通知所述UE与目标传输节点建立连接;302、在所述UE保持与一个或者多个源传输节点之间的全部或者部分层2传输状态的基础上,所述目标传输节点使用所述UE在所述目标传输节点的传输配置与所述UE进行传输,其中,所述源传输节点为所述UE在接收到所述服务节点更换通知之前连接的传输节点。
可选的,在所述UE保持与所述源传输节点之间的全部或者部分层2传输状态的基础上,所述目标传输节点使用所述UE在所述目标传输节点的传
输配置与所述UE进行传输,包括:
在所述UE保持与所述源传输节点之间的部分层2传输状态的基础上,所述目标传输节点使用所述UE在所述目标传输节点的传输配置与所述UE进行传输,其中,所述部分层2传输状态为所述服务节点更换通知中携带的指示信息指示需要保持的层2传输状态,或者所述部分层2传输状态为默认需要保持的层2传输状态。
可选的,所述目标传输节点使用所述UE在所述目标传输节点的传输配置与所述UE进行传输,包括:在配置时间点,所述目标传输节点使用所述UE在所述目标传输节点的传输配置与所述UE进行传输;或者在所述随机接入过程成功时,所述目标传输节点使用所述UE在所述目标传输节点的传输配置与所述UE进行传输。
可选的,所述目标传输节点为所述UE接收网络侧设备发送的传输节点配置集合对应的多个传输节点中的传输节点,所述传输节点配置集合包括所述UE在所述多个传输节点的传输配置。
可选的,所述方法还包括:所述目标传输节点接收集中传输节点通过接口消息发送的服务节点更换通知,其中,通过所述接口消息发送的服务节点更换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;所述UE的测量结果;UE在所述目标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述方法还包括:所述目标传输节点接收所述第一源传输节点发送的服务节点更换请求;所述目标传输节点判断是否接纳所述服务节点更换请求,若是,则向所述第一源传输节点返回确认消息,且所述确认消息包括所述UE在所述目标传输节点的传输配置;其中,所述服务节点更换请求包括如下一项或者多项:所述UE的测量结果;所述UE在所述源传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述UE保持的层2传输状态包括如下一项或者多项:HARQ相关的传输状态;AM传输相关的状态变量和定时器取值;UM传输相关的状态变量和定时器取值。
可选的,所述方法还包括:所述目标传输节点接收一个或者多个源传输节点发送的所述UE保持的层2传输状态的状态信息;若需要进行数据前转,所述方法还包括:所述目标传输节点接收一个或者多个源传输节点发送所述UE的需要进行前转的数据。
需要说明的是,本实施例作为与图2所示的实施例中对应的目标传输节点的实施方式,其具体的实施方式可以参见图2所示的实施例的相关说明,以为避免重复说明,本实施例不再赘述。本实施例中,同样提高网络传输效率。
请参见图4,本公开实施例还提供一种传输节点更换方法,如图4所示,包括以下步骤:401、第一源传输节点向UE发送服务节点更换通知,其中,所述服务节点更换通知用于通知所述UE与目标传输节点建立连接,所述目标传输节点为一个或者多个传输节点,以使所述UE根据所述服务节点更换通知向所述目标传输节点发起随机接入过程,以及由所述UE在保持与一个或者多个源传输节点之间的全部或者部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,其中,所述目标传输节点为一个或者多个传输节点,所述一个或者多个源传输节点包括所述第一源传输节点,且所述源传输节点为所述UE在接收到所述服务节点更换通知之前连接的传输节点。
可选的,所述服务节点更换通知用于通知所述UE由一个或者多个源传输节点更换至所述目标传输节点;或者所述服务节点更换通知用于通知所述UE断开已连接的多个源传输节点中部分传输节点的连接,并与所述目标传输节点建立连接;或者所述服务节点更换通知用于通知所述UE在已连接的一个或者多个源传输节点的基础上增加所述目标传输节点。
可选的,所述部分层2传输状态为所述服务节点更换通知中携带的指示信息指示需要保持的层2传输状态,或者所述部分层2传输状态为默认需要保持的层2传输状态。
可选的,在所述第一源传输节点向UE发送服务节点更换通知之前,所述方法还包括:所述第一源传输节点向所述UE发送传输节点配置集合,所述传输节点配置集合包括所述UE在多个传输节点的传输配置,其中,所述多个传输节点至少包括所述目标传输节点。
可选的,所述服务节点更换通知包括所述UE在所述目标传输节点的传输配置;或者所述方法还包括:若所述第一源传输节点决定所述UE与目标传输节点建立连接,所述第一源传输节点向所述UE发送所述UE在所述目标传输节点的传输配置。
可选的,所述服务节点更换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;UE在所述目标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述第一源传输节点向UE发送服务节点更换通知,包括:所述第一源传输节点向所述UE发送一信令,其中,所述信令包括所述服务节点更换通知;其中,所述信令为RRC信令,所述RRC信令由集中传输节点发送的,并由所述第一源传输节点进行空口传输转发给所述UE的;或者所述信令为层2信令,所述层2信令为所述第一源传输节点根据集中传输节点发送的服务节点更换信息自行组织的信令;或者所述信令为层1信令,所述层1信令为所述第一源传输节点根据集中传输节点发送的服务节点更换信息自行组织的信令。
可选的,所述方法还包括:所述第一源传输节点接收集中传输节点通过接口消息发送的服务节点更换通知,其中,通过所述接口消息发送的服务节点更换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;所述UE的测量结果;UE在所述目标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述目标传输节点是接收到所述第一源传输节点发送的服务节
点更换请求后,接纳所述UE的传输节点,且所述目标传输节点在接纳后向所述第一源传输节点返回所述UE在所述目标传输节点的传输配置;其中,所述服务节点更换请求包括如下一项或者多项:所述UE的测量结果;所述UE在所述源传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述第一源传输节点向UE发送服务节点更换通知,包括:所述第一源传输节点向所述UE发送一信令,其中,所述信令包括所述服务节点更换通知;其中,所述信令为RRC信令,所述RRC信令由所述第一源传输节点产生的,将所述目标传输节点发送的传输配置通过容器的形式置于所述RRC信令,并由所述第一源传输节点进行空口传输转发给所述UE的;或者所述信令为层2信令,所述层2信令为所述第一源传输节点根据所述目标传输节点发送的传输配置自行组织的信令;或者所述信令为层1信令,所述层1信令为所述第一源传输节点根据所述目标传输节点发送的传输配置自行组织的信令。
可选的,所述UE保持的层2传输状态包括如下一项或者多项:HARQ相关的传输状态;AM传输相关的状态变量和定时器取值;UM传输相关的状态变量和定时器取值。
可选的,所述UE保持的层2传输状态的状态信息由一个或者多个源传输节点传递给所述目标传输节点;若需要进行数据前转,所述UE的需要进行前转的数据由一个或者多个源传输节点传递给所述目标传输节点。
需要说明的是,本实施例作为与图2所示的实施例中对应的网络侧设备的实施方式,其具体的实施方式可以参见图2所示的实施例的相关说明,以为避免重复说明,本实施例不再赘述。本实施例中,同样可以提高网络传输效率。
下面以多个举例对上面实施例中介绍的实施方式进行举例说明。
例1:
该举例以网络侧设备为集中传输节点(CU)进行举例说明,如图5所示,包括以下步骤:
步骤0、由CU节点为UE配置相应的测量,由UE对当前的服务传输节点或集合和邻传输节点进行测量,以及测量结果处理,其中,该步骤为附图中没有体现;
步骤1、当UE的测量结果满足上报的触发条件,例如周期性上报或者事件触发上报,典型的事件触发上报条件是当前服务传输节点(即一个或者多个源传输节点)的测量结果低于门限且持续一定时间,和/或邻传输节点的测量结果高于一定的门限或者比当前服务传输节点高出门限且持续一定时间,满足条件之后,UE对测量结果进行上报。
在本例中,这种测量结果的上报可以通过L3信令的方式,到达UE的当前服务传输节点对应的CU节点。
这里需要注意,UE测量上报虽然是一种典型的触发更换服务传输节点的方式,但也不排除其他方式,例如:网络侧设备的各个传输节点(包含服务传输节点和邻传输节点)对UE上行测量结果的收集和上报;网络侧设备的各个传输节点(包含服务传输节点和邻传输节点)对自身状态的监测和上报,例如负荷状态和调整需求(覆盖调整、临时关机等)。
步骤2、CU节点收集各种测量结果和上报信息,进行综合判断,当决定对UE的服务传输节点或者服务节点集合进行更换时,需要通知源传输节点和目标传输节点该决定,同时UE也需要被通知该决定。
服务节点变更通知可以携带如下信息:哪些TRP被移出服务节点集合;哪些新TRP被加入服务节点集合;UE测量结果;UE在目标传输节点的配置;是否需要数据前转;是否需要L2状态保持和或哪些L2状态保持。
服务节点变更由CU节点发送至涉及到的各个传输节点。
步骤3a、网络侧设备将服务节点变更通知发送给UE。
服务节点变更通知也将在空口上发送给UE,该通知方法有以下几种:RRC信令、层2信令或者层1信令,具体描述请参见前面关于这三个信令的实施方式,此处不作重复说明。
其中,当UE的传输节点配置集合是预配置的,即UE已经提前获得了目标传输节点的相关传输配置,只需要告知UE目标传输节点的标识或其它简单信息,则通知UE的过程可以使用L2信令或L1信令;当需要给UE配置
全套的目标传输节点的相关传输配置,则此时还是用RRC信令过程较为有保障。
步骤3b、源传输节点节点接收到CU下发的服务节点更换通知之后,如果配置了需要数据前转和或L2状态保留,则源传输节点需要将UE相关的数据和或UE相关的L2状态向目标传输节点进行前转。其中,UE的数据前转,可以基于承载进行,也可以基于承载之下的不同数据流进行。在配置是否需要前转时,可以是承载1需要前转、承载2不需要前转,也可以承载1中的数据流1需要前转、承载1中的数据流2不需要前转。前转通道的粒度可以基于承载DRB粒度,也可以区分一个承载中的不同流粒度。
其中,L2状态保留,主要是说将当前UE相关的上下行L2状态传递到目标传输进行接续使用,其中,L2状态一般包括如下一项或者多项:HARQ相关的传输状态;AM传输相关的状态变量和定时器取值;UM传输相关的状态变量和定时器取值。
步骤4、对于UE来说,接收到服务节点变更通知之后,可以根据预配置的或者通知里携带的专用Preamble,向目标传输节点发起随机接入过程,向目标侧发起同步接入。
步骤5、目标传输节点回复针对UE专用Preamble的响应,之后UE和目标传输节点可以进行数据传输。
一般来说,步骤5完成,标志着UE和目标传输节点可以同时开始启用针对UE的专用配置,例如专用上行控制信道配置,专用传输配置等。
如果配置了UE的某条承载其L2状态是保持的,则UE和目标传输节点可以基于当前的状态变量进行累加处理,例如传输数据已经到SN=9,则接着可以传输数据SN=10;而当配置了UE的某条承载其L2状态是不需要保持的,则UE复位L2状态,重新从初始值开始,而目标传输节点新建立L2实体,同样从初始值开始。层二状态也可以部分复位,部分保持,例如MAC状态复位,RLC状态保持。
其中,在服务TRP更换的过程中,安全相关的层可以是不需要复位,而采取默认保持的,例如PDCP层的相关操作和状态,应该是连续进行的。
步骤6、当UE成功与目标TRP进行同步接入之后,目标传输节点需要
向CU节点发起路径转换请求过程,将UE的上下行路经更新为通过目标传输节点进行。
例2:
该举例以网络侧设备为为UE其中一个源传输节点进行举例说明,如图6所示,包括以下步骤:
步骤0、UE获取测量相关的配置,一般来说这种测量配置也是由CU节点通过L3信令进行配置的,当然也不排除L2信令配置测量,或者由L3信令配置测量的整个集合而由L2信令来指示当前启用配置集合中的哪些具体测量配置。UE根据测量配置进行相关的操作,由UE对当前的服务传输节点或集合和邻传输节点进行测量,以及测量结果处理,其中,该步骤附图中没有体现。
步骤1、当UE的测量结果满足上报的触发条件,例如周期性上报或者事件触发上报,典型的事件触发上报条件是当前服务传输节点的测量结果低于门限且持续一定时间,和/或邻传输节点的测量结果高于一定的门限或者比服务传输节点高出门限且持续一定时间,满足条件之后,UE对测量结果进行上报。
在本例中,这种测量结果的上报可以通过L2信令的方式,更快速的到达UE的当前服务传输节点。
这里需要注意,UE测量上报虽然是一种典型的触发更换服务传输节点的方式,但也不排除其他方式,例如:网络侧设备的各个传输节点(包含服务传输节点和邻传输节点)对UE上行测量结果的收集和交互;网络侧设备的各个传输节点(包含服务传输节点和邻传输节点)对自身状态的监测和交互,例如负荷状态和调整需求(覆盖调整、临时关机等)。
步骤2、源传输节点收集测量结果和上报信息,进行综合判断,当决定对UE的服务节点或者服务节点集合进行更换时,需要向目标传输节点进行服务节点变更请求。
服务节点变更请求可以携带如下信息:UE的测量结果;UE在源TRP的配置;是否需要数据前转;是否需要L2状态保持。
当需要更新的目标传输节点不止一个时,可以同时向多个目标传输节点
发送请求。
而当源传输节点不止一个时,一般最好优选其中一个源传输节点头领作为上述网络侧设备,进行后续流程。一般来说源传输节点头领应该是到UE的空口信道质量较好,或者回程链路质量较好,或者保存UE完整信息的,或者是此次更新之后仍旧能保留作为UE的服务传输节点的节点。
步骤3、目标传输节点接收到该服务节点变更请求后,对UE进行接纳判断,如果可以接纳,则返回确认且携带UE在目标传输节点的配置。
步骤4a、根据目标传输节点返回的接纳和配置情况,源传输节点向UE发送服务节点变更通知,其中通知中可以携带:哪些TRP被移出服务节点集合;哪些新TRP被加入服务节点集合;UE在新TRP的配置;是否需要L2状态保持和或哪些L2状态保持。
服务节点变更通知在空口上发送给UE,该通知方法有以下几种:RRC信令、层2信令或者层1信令,具体描述请参见前面关于这三个信令的实施方式,此处不作重复说明。
其中,当UE的传输节点配置集合是预配置的,即UE已经提前获得了目标传输节点的相关传输配置,只需要告知UE目标传输节点的标识或其它简单信息,则通知UE的过程可以使用L2信令或L1信令;当需要给UE配置全套的目标传输节点的相关传输配置,则此时还是用RRC信令过程较为有保障。
步骤4b、源传输节点根据前转和L2状态保留的协商结果,将需要前转的数据和需要保留的UE的L2状态信息,传递给目标传输节点。
UE的数据前转,可以基于承载进行,也可以基于承载之下的不同数据流进行。在配置是否需要前转时,可以是承载1需要前转、承载2不需要前转,也可以承载1中的数据流1需要前转、承载1中的数据流2不需要前转。前转通道的粒度可以基于承载DRB粒度,也可以区分一个承载中的不同流粒度。
L2状态保留,主要是说将当前UE相关的上下行L2状态传递到目标TRP进行接续使用。L2状态一般包括可以包括如下一项或者多项:HARQ相关的传输状态;AM传输相关的状态变量和定时器取值;UM传输相关的状态变量和定时器取值。
步骤5、对于UE来说,接收到服务节点变更通知之后,可以根据预配置的或者通知里携带的专用Preamble,向目标TRP发起随机接入过程,向目标侧发起同步接入。
步骤6、目标传输节点回复针对UE专用Preamble的响应,之后UE和目标传输节点可以进行数据传输。
一般来说,步骤6完成,标志着UE和目标传输节点可以同时开始启用针对UE的专用配置,例如专用上行控制信道配置,专用传输配置等。
如果配置了UE的某条承载其L2状态是保持的,则UE和目标传输节点可以基于当前的状态变量进行累加处理,例如传输数据已经到SN=9,则接着可以传输数据SN=10;而当配置了UE的某条承载其L2状态是不需要保持的,则UE复位L2状态,重新从初始值开始,而目标TRP新建立L2实体,同样从初始值开始。层二状态也可以部分复位,部分保持,例如MAC状态复位,RLC状态保持。
其中,在服务TRP更换的过程中,安全相关的层可以是不需要复位,而采取默认保持的,例如PDCP层的相关操作和状态,应该是连续进行的。
步骤7、当UE成功与目标传输节点进行同步接入之后,目标传输节点需要向CU节点发起路径转换请求过程,将UE的上下行路经更新为通过目标传输节点进行。
参见图7,图中示出一种UE的结构,UE700包括如下模块:第一接收模块701,用于接收第一源传输节点发送的服务节点更换通知,其中,所述服务节点更换通知用于通知所述UE与目标传输节点建立连接,所述目标传输节点为一个或者多个传输节点;发起模块702,用于根据所述服务节点更换通知向所述目标传输节点发起随机接入过程;传输模块703,用于在保持与一个或者多个源传输节点之间的全部或者部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,其中,所述一个或者多个源传输节点包括所述第一源传输节点,且所述源传输节点为所述UE在接收到所述服务节点更换通知之前连接的传输节点。
可选的,所述服务节点更换通知用于通知所述UE由一个或者多个源传输节点更换至所述目标传输节点;或者所述服务节点更换通知用于通知所述
UE断开已连接的多个源传输节点中部分传输节点的连接,并与所述目标传输节点建立连接;或者所述服务节点更换通知用于通知所述UE在已连接的一个或者多个源传输节点的基础上增加所述目标传输节点。
可选的,传输模块703用于在保持与一个或者多个源传输节点之间部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,其中,所述部分层2传输状态为所述服务节点更换通知中携带的指示信息指示需要保持的层2传输状态,或者所述部分层2传输状态为默认需要保持的层2传输状态。
可选的,如图8所示,所述UE还包括:复位模块704,用于对除所述部分层2传输状态之外的其他层2传输状态进行复位处理。
可选的,传输模块703用于在配置时间点,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输;或者所述传输模块703用于在所述随机接入过程成功时,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输。
可选的,如图9所示,所述UE还包括:第二接收模块705,用于接收网络侧设备发送的传输节点配置集合,所述传输节点配置集合包括所述UE在多个传输节点的传输配置,其中,所述多个传输节点至少包括所述目标传输节点。
可选的,所述服务节点更换通知包括所述UE在所述目标传输节点的传输配置;
或者,如图10所示,所述UE还包括:第三接收模块706,用于若网络侧设备决定所述UE与目标传输节点建立连接,接收所述网络侧设备发送的所述UE在所述目标传输节点的传输配置。
可选的,所述服务节点更换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;UE在所述目标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述第一接收模块701用于接收第一源传输节点发送的一信令,
其中,所述信令包括所述服务节点更换通知;其中,所述信令为无线资源控制RRC信令,所述RRC信令由集中传输节点发送的,并由所述第一源传输节点进行空口传输转发给所述UE的;或者所述信令为层2信令,所述层2信令为所述第一源传输节点根据集中传输节点发送的服务节点更换信息自行组织的信令;或者所述信令为层1信令,所述层1信令为所述第一源传输节点根据集中传输节点发送的服务节点更换信息自行组织的信令。
可选的,集中传输节点通过接口消息向所述目标传输节点,以及一个或者多个源传输节点发送服务节点更换通知,其中,通过所述接口消息发送的服务节点更换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;UE的测量结果;UE在所述目标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述目标传输节点是接收到所述第一源传输节点发送的服务节点更换请求后,接纳所述UE的传输节点,且所述目标传输节点在接纳后向所述第一源传输节点返回所述UE在所述目标传输节点的传输配置;其中,所述服务节点更换请求包括如下一项或者多项:所述UE的测量结果;所述UE在一个或者多个源传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述第一接收模块701用于接收所述第一源传输节点发送的一信令,其中,所述信令包括所述服务节点更换通知;其中,所述信令为RRC信令,所述RRC信令由所述第一源传输节点产生的,将所述目标传输节点发送的传输配置通过容器的形式置于所述RRC信令,并由所述第一源传输节点进行空口传输转发给所述UE的;或者所述信令为层2信令,所述层2信令为所述第一源传输节点根据所述目标传输节点发送的传输配置自行组织的信令;或者所述信令为层1信令,所述层1信令为所述第一源传输节点根据所述目标传输节点发送的传输配置自行组织的信令。
可选的,所述UE保持的层2传输状态包括如下一项或者多项:HARQ相关的传输状态;AM传输相关的状态变量和定时器取值;UM传输相关的状态变量和定时器取值。
可选的,所述UE保持的层2传输状态的状态信息由一个或者多个源传输节点传递给所述目标传输节点;若需要进行数据前转,所述UE的需要进行前转的数据由一个或者多个源传输节点传递给所述目标传输节点。
可选的,所述UE在传输节点更换过程中安全相关的层的传输状态是默认保持,不需要复位。
需要说明的是,本实施例中上述UE700可以是本公开实施例中方法实施例中任意实施方式的UE,本公开实施例中方法实施例中UE的任意实施方式都可以被本实施例中的上述UE700所实现,以及达到相同的有益效果,此处不再赘述。
参见图11,图中示出一种传输节点的结构,传输节点1100为目标传输节点,传输节点1100包括如下模块:第一接收模块1101,用于接收UE根据服务节点更换通知发起随机接入过程,其中,所述服务节点更换通知用于通知所述UE与目标传输节点建立连接;传输模块1102,用于在所述UE保持与一个或者多个源传输节点之间的全部或者部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与所述UE进行传输,其中,所述源传输节点为所述UE在接收到所述服务节点更换通知之前连接的传输节点。
可选的,传输模块1102用于在所述UE保持与所述源传输节点之间的部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与所述UE进行传输,其中,所述部分层2传输状态为所述服务节点更换通知中携带的指示信息指示需要保持的层2传输状态,或者所述部分层2传输状态为默认需要保持的层2传输状态。
可选的,传输模块1102用于在配置时间点,使用所述UE在所述目标传输节点的传输配置与所述UE进行传输;或者所述传输模块1102用于在所述随机接入过程成功时,使用所述UE在所述目标传输节点的传输配置与所述UE进行传输。
可选的,所述目标传输节点为所述UE接收网络侧设备发送的传输节点
配置集合对应的多个传输节点中的传输节点,所述传输节点配置集合包括所述UE在所述多个传输节点的传输配置。
可选的,如图12所示,所述传输节点还包括:第二接收模块1103,用于接收集中传输节点通过接口消息发送的服务节点更换通知,其中,通过所述接口消息发送的服务节点更换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;所述UE的测量结果;UE在所述目标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,如图13所示,所述传输节点还包括:第三接收模块1104,用于接收所述第一源传输节点发送的服务节点更换请求;返回模块1105,用于判断是否接纳所述服务节点更换请求,若是,则向所述第一源传输节点返回确认消息,所述确认消息包括所述UE在所述目标传输节点的传输配置;其中,所述服务节点更换请求包括如下一项或者多项:所述UE的测量结果;所述UE在所述源传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述UE保持的层2传输状态包括如下一项或者多项:HARQ相关的传输状态;AM传输相关的状态变量和定时器取值;UM传输相关的状态变量和定时器取值。
可选的,如图14所示,所述传输节点还包括:第四接收模块1106,用于接收一个或者多个源传输节点发送的所述UE保持的层2传输状态的状态信息;若需要进行数据前转,所述传输节点还包括:第五接收模块1107,用于接收一个或者多个源传输节点发送所述UE的需要进行前转的数据。
需要说明的是,本实施例中上述传输节点1100可以是本公开实施例中方法实施例中任意实施方式的目标传输节点,本公开实施例中方法实施例中目标传输节点的任意实施方式都可以被本实施例中的上述传输节点1100所实
现,以及达到相同的有益效果,此处不再赘述。
参见图15,图中示出一种传输节点的结构,传输节点1500为第一源传输节点,网络侧设备1500包括如下模块:第一发送模块1501,用于向UE发送服务节点更换通知,其中,所述服务节点更换通知用于通知所述UE与目标传输节点建立连接,所述目标传输节点为一个或者多个传输节点,以使所述UE根据所述服务节点更换通知向所述目标传输节点发起随机接入过程,以及由所述UE在保持与一个或者多个源传输节点之间的全部或者部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,其中,所述目标传输节点为一个或者多个传输节点,所述一个或者多个源传输节点包括所述第一源传输节点,且所述源传输节点为所述UE在接收到所述服务节点更换通知之前连接的传输节点。
可选的,所述服务节点更换通知用于通知所述UE由一个或者多个源传输节点更换至所述目标传输节点;或者所述服务节点更换通知用于通知所述UE断开已连接的多个源传输节点中部分传输节点的连接,并与所述目标传输节点建立连接;或者所述服务节点更换通知用于通知所述UE在已连接的一个或者多个源传输节点的基础上增加所述目标传输节点。
可选的,所述部分层2传输状态为所述服务节点更换通知中携带的指示信息指示需要保持的层2传输状态,或者所述部分层2传输状态为默认需要保持的层2传输状态。
可选的,如图16所示,所述传输节点1500还包括:第二发送模块1502,用于向所述UE发送传输节点配置集合,所述传输节点配置集合包括所述UE在多个传输节点的传输配置,其中,所述多个传输节点至少包括所述目标传输节点。
可选的,所述服务节点更换通知包括所述UE在所述目标传输节点的传输配置;或者如图17a所示,传输节点1500还包括:第三发送模块1503,用于若所述第一源传输节点决定所述UE与目标传输节点建立连接,向所述UE发送所述UE在所述目标传输节点的传输配置。
可选的,所述服务节点更换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;UE在所述目
标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述第一发送模块1501用于向所述UE发送一信令,其中,所述信令包括所述服务节点更换通知;其中,所述信令为无线资源控制RRC信令,所述RRC信令由集中传输节点发送的,并由所述第一源传输节点进行空口传输转发给所述UE的;或者所述信令为层2信令,所述层2信令为所述第一源传输节点根据集中传输节点发送的服务节点更换信息自行组织的信令;或者所述信令为层1信令,所述层1信令为所述第一源传输节点根据集中传输节点发送的服务节点更换信息自行组织的信令。
可选的,如图17b,所述传输节点1500还包括:接收模块1504,用于接收集中传输节点通过接口消息发送的服务节点更换通知,其中,通过所述接口消息发送的服务节点更换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;所述UE的测量结果;UE在所述目标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述目标传输节点是接收到第一源传输节点发送的服务节点更换请求后,接纳所述UE的传输节点,且所述目标传输节点在接纳后向第一源传输节点返回所述UE在所述目标传输节点的传输配置;其中,所述服务节点更换请求包括如下一项或者多项:所述UE的测量结果;所述UE在所述源传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述第一发送模块1501用于向所述UE发送一信令,其中,所述信令包括所述服务节点更换通知;其中,所述信令为RRC信令,所述RRC信令由所述第一源传输节点产生的,将所述目标传输节点发送的传输配置通过容器的形式置于所述RRC信令,并由所述第一源传输节点进行空口传输转
发给所述UE的;或者所述信令为层2信令,所述层2信令为所述第一源传输节点根据所述目标传输节点发送的传输配置自行组织的信令;或者所述信令为层1信令,所述层1信令为所述第一源传输节点根据所述目标传输节点发送的传输配置自行组织的信令。
可选的,所述UE保持的层2传输状态包括如下一项或者多项:HARQ相关的传输状态;AM传输相关的状态变量和定时器取值;UM传输相关的状态变量和定时器取值。
可选的,所述UE保持的层2传输状态的状态信息由一个或者多个源传输节点传递给所述目标传输节点;若需要进行数据前转,所述UE的需要进行前转的数据由一个或者多个源传输节点传递给所述目标传输节点。
需要说明的是,本实施例中上述传输节点1500可以是本公开实施例中方法实施例中任意实施方式的第一源传输节点,本公开实施例中方法实施例中第一源传输节点的任意实施方式都可以被本实施例中的传输节点1500所实现,以及达到相同的有益效果,此处不再赘述。
参见图18,图中示出一种UE的结构,该UE包括:处理器1800、收发机1810、存储器1820、用户接口1830和总线接口,其中:
处理器1800,用于读取存储器1820中的程序,执行下列过程:
通过收发机1810接收第一源传输节点发送的服务节点更换通知,其中,所述服务节点更换通知用于通知所述UE与目标传输节点建立连接,所述目标传输节点为一个或者多个传输节点;
通过收发机1810根据所述服务节点更换通知向所述目标传输节点发起随机接入过程;
在保持与一个或者多个源传输节点之间的全部或者部分层2(L2)传输状态的基础上,通过收发机1810使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,其中,所述一个或者多个源传输节点包括所述第一源传输节点,且所述源传输节点为所述UE在接收到所述服务节点更换通知之前连接的传输节点。
其中,收发机1810,用于在处理器1800的控制下接收和发送数据。
在图18中,总线架构可以包括任意数量的互联的总线和桥,具体由处理
器1800代表的一个或多个处理器和存储器1820代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机1810可以是多个元件,即包括发送机和接收机,提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备,用户接口1830还可以是能够外接内接需要设备的接口,连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器1800负责管理总线架构和通常的处理,存储器1820可以存储处理器1800在执行操作时所使用的数据。
可选的,所述服务节点更换通知用于通知所述UE由一个或者多个源传输节点更换至所述目标传输节点;或者所述服务节点更换通知用于通知所述UE断开已连接的多个源传输节点中部分传输节点的连接,并与所述目标传输节点建立连接;或者所述服务节点更换通知用于通知所述UE在已连接的一个或者多个源传输节点的基础上增加所述目标传输节点。
可选的,所述在保持与一个或者多个源传输节点之间的全部或者部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,包括:在保持与一个或者多个源传输节点之间部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,其中,所述部分层2传输状态为所述服务节点更换通知中携带的指示信息指示需要保持的层2传输状态,或者所述部分层2传输状态为默认需要保持的层2传输状态。
可选的,处理器1800还用于:对除所述部分层2传输状态之外的其他层2传输状态进行复位处理。
可选的,所述使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,包括:在配置时间点,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输;或者在所述随机接入过程成功时,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输。
可选的,在接收所述第一源传输节点发送的服务节点更换通知之前,处理器1800还用于:接收网络侧设备发送的传输节点配置集合,所述传输节点
配置集合包括所述UE在多个传输节点的传输配置,其中,所述多个传输节点至少包括所述目标传输节点。
可选的,所述服务节点更换通知包括所述UE在所述目标传输节点的传输配置;或者,处理器1800还用于:若网络侧设备决定所述UE与目标传输节点建立连接,通过收发机1810接收所述网络侧设备发送的所述UE在所述目标传输节点的传输配置。
可选的,所述服务节点更换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;UE在所述目标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述第一源传输节点发送的所述服务节点更换通知,包括:接收第一源传输节点发送的一信令,其中,所述信令包括所述服务节点更换通知;其中,所述信令为无线资源控制RRC信令,所述RRC信令由集中传输节点发送的,并由所述源传输节点进行空口传输转发给所述UE的;或者所述信令为层2信令,所述层2信令为所述源传输节点根据集中传输节点发送的服务节点更换信息自行组织的信令;或者所述信令为层1信令,所述层1信令为所述源传输节点根据集中传输节点发送的服务节点更换信息自行组织的信令。
可选的,集中传输节点通过接口消息向所述目标传输节点,以及一个或者多个源传输节点发送服务节点更换通知,其中,通过所述接口消息发送的服务节点更换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;UE的测量结果;UE在所述目标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述目标传输节点是接收到所述第一源传输节点发送的服务节点更换请求后,接纳所述UE的传输节点,且所述目标传输节点在接纳后向所述第一源传输节点返回所述UE在所述目标传输节点的传输配置;其中,
所述服务节点更换请求包括如下一项或者多项:所述UE的测量结果;所述UE在一个或者多个源传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述接收第一源传输节点发送的所述服务节点更换通知,包括:接收所述第一源传输节点发送的一信令,其中,所述信令包括所述服务节点更换通知;其中,所述信令为RRC信令,所述RRC信令由所述第一源传输节点产生的,将所述目标传输节点发送的传输配置通过容器的形式置于所述RRC信令,并由所述第一源传输节点进行空口传输转发给所述UE的;或者所述信令为层2信令,所述层2信令为所述第一源传输节点根据所述目标传输节点发送的传输配置自行组织的信令;或者所述信令为层1信令,所述层1信令为所述第一源传输节点根据所述目标传输节点发送的传输配置自行组织的信令。
可选的,所述UE保持的层2传输状态包括如下一项或者多项:HARQ相关的传输状态;确认模式(AM)传输相关的状态变量和定时器取值;非确认模式(UM)传输相关的状态变量和定时器取值。
可选的,所述UE保持的层2传输状态的状态信息由一个或者多个源传输节点传递给所述目标传输节点;若需要进行数据前转,所述UE的需要进行前转的数据由一个或者多个源传输节点传递给所述目标传输节点。
可选的,所述UE在传输节点更换过程中安全相关的层的传输状态是默认保持,不需要复位。
需要说明的是,本实施例中上述UE可以是本公开实施例中方法实施例中任意实施方式的UE,本公开实施例中方法实施例中UE的任意实施方式都可以被本实施例中的上述UE所实现,以及达到相同的有益效果,此处不再赘述。
参见图19,图中示出一种传输节点的结构,该传输节点为目标传输节点,该传输节点包括:处理器1900、收发机1910、存储器1920、用户接口1930和总线接口,其中:
处理器1900,用于读取存储器1920中的程序,执行下列过程:通过收发机1910接收UE根据服务节点更换通知发起随机接入过程,其中,所述服务节点更换通知用于通知所述UE与目标传输节点建立连接;在所述UE保持与一个或者多个源传输节点之间的全部或者部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与所述UE进行传输,其中,所述源传输节点为所述UE在接收到所述服务节点更换通知之前连接的传输节点。
其中,收发机1910,用于在处理器1900的控制下接收和发送数据。
在图19中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器1900代表的一个或多个处理器和存储器1920代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机1910可以是多个元件,即包括发送机和接收机,提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备,用户接口1930还可以是能够外接内接需要设备的接口,连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器1900负责管理总线架构和通常的处理,存储器1920可以存储处理器1900在执行操作时所使用的数据。
可选的,在所述UE保持与所述源传输节点之间的全部或者部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与所述UE进行传输,包括:在所述UE保持与所述源传输节点之间的部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与所述UE进行传输,其中,所述部分层2传输状态为所述服务节点更换通知中携带的指示信息指示需要保持的层2传输状态,或者所述部分层2传输状态为默认需要保持的层2传输状态。
可选的,所述使用所述UE在所述目标传输节点的传输配置与所述UE进行传输,包括:在配置时间点,使用所述UE在所述目标传输节点的传输配置与所述UE进行传输;或者在所述随机接入过程成功时,使用所述UE在所述目标传输节点的传输配置与所述UE进行传输。
可选的,所述目标传输节点为所述UE接收网络侧设备发送的传输节点
配置集合对应的多个传输节点中的传输节点,所述传输节点配置集合包括所述UE在所述多个传输节点的传输配置。
可选的,处理器1900还用于:通过收发机1910接收集中传输节点通过接口消息发送的服务节点更换通知,其中,通过所述接口消息发送的服务节点更换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;所述UE的测量结果;UE在所述目标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,处理器1900还用于:通过收发机1910接收所述第一源传输节点发送的服务节点更换请求;判断是否接纳所述服务节点更换请求,若是,则通过收发机1910向所述第一源传输节点返回确认消息,所述确认消息包括所述UE在所述目标传输节点的传输配置;其中,所述服务节点更换请求包括如下一项或者多项:所述UE的测量结果;所述UE在所述源传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述UE保持的层2传输状态包括如下一项或者多项:HARQ相关的传输状态;AM传输相关的状态变量和定时器取值;UM传输相关的状态变量和定时器取值。
可选的,处理器1900还用于:通过收发机1910接收一个或者多个源传输节点发送的所述UE保持的层2传输状态的状态信息;若需要进行数据前转,处理器1900还用于:接收一个或者多个源传输节点发送所述UE的需要进行前转的数据。
需要说明的是,本实施例中上述传输节点可以是本公开实施例中方法实施例中任意实施方式的目标传输节点,本公开实施例中方法实施例中目标传输节点的任意实施方式都可以被本实施例中的上上述传输节点所实现,以及达到相同的有益效果,此处不再赘述。
参见图20,图中示出一种传输节点的结构,该传输节点为第一源传输节
点,该网络侧设备包括:处理器2000、收发机2010、存储器2020、用户接口2030和总线接口,其中:处理器2000,用于读取存储器2020中的程序,执行下列过程:通过收发机2010向UE发送服务节点更换通知,其中,所述服务节点更换通知用于通知所述UE与目标传输节点建立连接,所述目标传输节点为一个或者多个传输节点,以使所述UE根据所述服务节点更换通知向所述目标传输节点发起随机接入过程,以及由所述UE在保持与一个或者多个源传输节点之间的全部或者部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,其中,所述目标传输节点为一个或者多个传输节点,所述一个或者多个源传输节点包括所述第一源传输节点,且所述源传输节点为所述UE在接收到所述服务节点更换通知之前连接的传输节点。
其中,收发机2010,用于在处理器2000的控制下接收和发送数据。
在图20中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器2000代表的一个或多个处理器和存储器2020代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机2010可以是多个元件,即包括发送机和接收机,提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备,用户接口2030还可以是能够外接内接需要设备的接口,连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器2000负责管理总线架构和通常的处理,存储器2020可以存储处理器2000在执行操作时所使用的数据。
可选的,所述服务节点更换通知用于通知所述UE由一个或者多个源传输节点更换至所述目标传输节点;或者所述服务节点更换通知用于通知所述UE断开已连接的多个源传输节点中部分传输节点的连接,并与所述目标传输节点建立连接;或者所述服务节点更换通知用于通知所述UE在已连接的一个或者多个源传输节点的基础上增加所述目标传输节点。
可选的,所述部分层2传输状态为所述服务节点更换通知中携带的指示信息指示需要保持的层2传输状态,或者所述部分层2传输状态为默认需要
保持的层2传输状态。
可选的,在所述第一源传输节点向UE发送服务节点更换通知之前,处理器2000还用于:通过收发机2010向所述UE发送传输节点配置集合,所述传输节点配置集合包括所述UE在多个传输节点的传输配置,其中,所述多个传输节点至少包括所述目标传输节点。
可选的,所述服务节点更换通知包括所述UE在所述目标传输节点的传输配置;或者所述处理器2000还用于:若所述第一源传输节点决定所述UE与目标传输节点建立连接,通过收发机2010向所述UE发送所述UE在所述目标传输节点的传输配置。
可选的,所述服务节点更换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;UE在所述目标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述向UE发送服务节点更换通知,包括:向所述UE发送一信令,其中,所述信令包括所述服务节点更换通知;其中,所述信令为无线资源控制RRC信令,所述RRC信令由集中传输节点发送的,并由所述第一源传输节点进行空口传输转发给所述UE的;或者所述信令为层2信令,所述层2信令为所述第一源传输节点根据集中传输节点发送的服务节点更换信息自行组织的信令;或者所述信令为层1信令,所述层1信令为所述第一源传输节点根据集中传输节点发送的服务节点更换信息自行组织的信令。
可选的,处理器2000还用于:通过收发机2010接收所述集中传输节点通过接口消息发送的服务节点更换通知,其中,通过所述接口消息发送的服务节点更换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;所述UE的测量结果;UE在所述目标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述目标传输节点是接收到所述第一源传输节点发送的服务节
点更换请求后,接纳所述UE的传输节点,且所述目标传输节点在接纳后向所述第一源传输节点返回所述UE在所述目标传输节点的传输配置;其中,所述服务节点更换请求包括如下一项或者多项:所述UE的测量结果;所述UE在所述源传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
可选的,所述向UE发送服务节点更换通知,包括:向所述UE发送一信令,其中,所述信令包括所述服务节点更换通知;其中,所述信令为RRC信令,所述RRC信令由所述第一源传输节点产生的,将所述目标传输节点发送的传输配置通过容器的形式置于所述RRC信令,并由所述第一源传输节点进行空口传输转发给所述UE的;或者所述信令为层2信令,所述层2信令为所述第一源传输节点根据所述目标传输节点发送的传输配置自行组织的信令;或者所述信令为层1信令,所述层1信令为所述第一源传输节点根据所述目标传输节点发送的传输配置自行组织的信令。
可选的,所述UE保持的层2传输状态包括如下一项或者多项:HARQ相关的传输状态;AM传输相关的状态变量和定时器取值;UM传输相关的状态变量和定时器取值。
可选的,所述UE保持的层2传输状态的状态信息由一个或者多个源传输节点传递给所述目标传输节点;若需要进行数据前转,所述UE的需要进行前转的数据由一个或者多个源传输节点传递给所述目标传输节点。
需要说明的是,本实施例中上述传输节点可以是本公开实施例中方法实施例中任意实施方式的第一源传输节点,本公开实施例中方法实施例中第一源传输节点的任意实施方式都可以被本实施例中的上述源传输节点所实现,以及达到相同的有益效果,此处不再赘述。
在本申请所提供的几个实施例中,应该理解到,所揭露方法和装置,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或
直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
另外,在本公开各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理包括,也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用硬件加软件功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元,可以存储在一个计算机可读取存储介质中。上述软件功能单元存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本公开各个实施例所述收发方法的部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(Read-Only Memory,简称ROM)、随机存取存储器(Random Access Memory,简称RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述是本公开的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本公开所述原理的前提下,还可以作出若干改进和润饰,这些改进和润饰也应视为本公开的保护范围。
Claims (57)
- 一种传输节点更换方法,包括:用户终端UE接收第一源传输节点发送的服务节点更换通知,其中,所述服务节点更换通知用于通知所述UE与目标传输节点建立连接,所述目标传输节点为一个或者多个传输节点;所述UE根据所述服务节点更换通知向所述目标传输节点发起随机接入过程;所述UE在保持与一个或者多个源传输节点之间的全部或者部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,其中,所述一个或者多个源传输节点包括所述第一源传输节点,且所述源传输节点为所述UE在接收到所述服务节点更换通知之前连接的传输节点。
- 如权利要求1所述的方法,其中,所述服务节点更换通知用于通知所述UE由一个或者多个源传输节点更换至所述目标传输节点;或者所述服务节点更换通知用于通知所述UE断开已连接的多个源传输节点中部分传输节点的连接,并与所述目标传输节点建立连接;或者所述服务节点更换通知用于通知所述UE在已连接的一个或者多个源传输节点的基础上增加所述目标传输节点。
- 如权利要求1所述的方法,其中,所述UE在保持与一个或者多个源传输节点之间的全部或者部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,包括:所述UE在保持与一个或者多个源传输节点之间部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,其中,所述部分层2传输状态为所述服务节点更换通知中携带的指示信息指示需要保持的层2传输状态,或者所述部分层2传输状态为默认需要保持的层2传输状态。
- 如权利要求3所述的方法,还包括:所述UE对除所述部分层2传输状态之外的其他层2传输状态进行复位处 理。
- 如权利要求1-4中任一项所述的方法,其中,所述使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,包括:在配置时间点,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输;或者在所述随机接入过程成功时,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输。
- 如权利要求1-4中任一项所述的方法,其中,在所述UE接收所述第一源传输节点发送的服务节点更换通知之前,所述方法还包括:所述UE接收网络侧设备发送的传输节点配置集合,所述传输节点配置集合包括所述UE在多个传输节点的传输配置,其中,所述多个传输节点至少包括所述目标传输节点。
- 如权利要求1-4中任一项所述的方法,其中,所述服务节点更换通知包括所述UE在所述目标传输节点的传输配置;或者,所述方法还包括:若网络侧设备决定所述UE与目标传输节点建立连接,所述UE接收所述网络侧设备发送的所述UE在所述目标传输节点的传输配置。
- 如权利要求1-4中任一项所述的方法,其中,所述服务节点更换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;UE在所述目标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
- 如权利要求8所述的方法,其中,所述UE接收第一源传输节点发送的所述服务节点更换通知,包括:所述UE接收第一源传输节点发送的一信令,其中,所述信令包括所述服务节点更换通知;其中,所述信令为无线资源控制RRC信令,所述RRC信令由集中传输节点发送的,并由所述第一源传输节点进行空口传输转发给所述UE的;或者所述信令为层2信令,所述层2信令为所述第一源传输节点根据集中传输节点发送的服务节点更换信息自行组织的信令;或者所述信令为层1信令,所述层1信令为所述第一源传输节点根据集中传输节点发送的服务节点更换信息自行组织的信令。
- 如权利要求8所述的方法,其中,集中传输节点通过接口消息向所述目标传输节点,以及一个或者多个源传输节点发送服务节点更换通知,其中,通过所述接口消息发送的服务节点更换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;UE的测量结果;UE在所述目标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
- 如权利要求8所述的方法,其中,所述目标传输节点是接收到所述第一源传输节点发送的服务节点更换请求后,接纳所述UE的传输节点,且所述目标传输节点在接纳后向所述第一源传输节点返回所述UE在所述目标传输节点的传输配置;其中,所述服务节点更换请求包括如下一项或者多项:所述UE的测量结果;所述UE在一个或者多个源传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
- 如权利要求8所述的方法,其中,所述UE接收第一源传输节点发送的所述服务节点更换通知,包括:所述UE接收所述第一源传输节点发送的一信令,其中,所述信令包括所 述服务节点更换通知;其中,所述信令为RRC信令,所述RRC信令由所述第一源传输节点产生的,将所述目标传输节点发送的传输配置通过容器的形式置于所述RRC信令,并由所述第一源传输节点进行空口传输转发给所述UE的;或者所述信令为层2信令,所述层2信令为所述第一源传输节点根据所述目标传输节点发送的传输配置自行组织的信令;或者所述信令为层1信令,所述层1信令为所述第一源传输节点根据所述目标传输节点发送的传输配置自行组织的信令。
- 如权利要求1-4中任一项所述的方法,其中,所述UE保持的层2传输状态包括如下一项或者多项:混合自动重传请求HARQ相关的传输状态;确认模式AM传输相关的状态变量和定时器取值;非确认模式UM传输相关的状态变量和定时器取值。
- 如权利要求1-4中任一项所述的方法,其中,所述UE保持的层2传输状态的状态信息由一个或者多个源传输节点传递给所述目标传输节点;若需要进行数据前转,所述UE的需要进行前转的数据由一个或者多个源传输节点传递给所述目标传输节点。
- 如权利要求1-4中任一项所述的方法,其中,所述UE在传输节点更换过程中安全相关的层的传输状态是默认保持,不需要复位。
- 一种传输节点更换方法,包括:目标传输节点接收用户终端UE根据服务节点更换通知发起随机接入过程,其中,所述服务节点更换通知用于通知所述UE与目标传输节点建立连接;在所述UE保持与一个或者多个源传输节点之间的全部或者部分层2传输状态的基础上,所述目标传输节点使用所述UE在所述目标传输节点的传输配置与所述UE进行传输,其中,所述源传输节点为所述UE在接收到所述服务节点更换通知之前连接的传输节点。
- 如权利要求16所述的方法,其中,在所述UE保持与所述源传输节点之间的全部或者部分层2传输状态的基础上,所述目标传输节点使用所述UE在所述目标传输节点的传输配置与所述UE进行传输,包括:在所述UE保持与所述源传输节点之间的部分层2传输状态的基础上,所述目标传输节点使用所述UE在所述目标传输节点的传输配置与所述UE进行传输,其中,所述部分层2传输状态为所述服务节点更换通知中携带的指示信息指示需要保持的层2传输状态,或者所述部分层2传输状态为默认需要保持的层2传输状态。
- 如权利要求16或17所述的方法,其中,所述目标传输节点使用所述UE在所述目标传输节点的传输配置与所述UE进行传输,包括:在配置时间点,所述目标传输节点使用所述UE在所述目标传输节点的传输配置与所述UE进行传输;或者在所述随机接入过程成功时,所述目标传输节点使用所述UE在所述目标传输节点的传输配置与所述UE进行传输。
- 如权利要求16或17所述的方法,其中,所述方法还包括:所述目标传输节点接收集中传输节点通过接口消息发送的服务节点更换通知,其中,通过所述接口消息发送的服务节点更换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;所述UE的测量结果;UE在所述目标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
- 如权利要求16或17所述的方法,其中,所述方法还包括:所述目标传输节点接收第一源传输节点发送的服务节点更换请求;所述目标传输节点判断是否接纳所述服务节点更换请求,若是,则向所述第一源传输节点返回确认消息,且所述确认消息包括所述UE在所述目标传输节点的传输配置;其中,所述服务节点更换请求包括如下一项或者多项:所述UE的测量结果;所述UE在所述源传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
- 如权利要求16或17所述的方法,其中,所述UE保持的层2传输状态包括如下一项或者多项:HARQ相关的传输状态;AM传输相关的状态变量和定时器取值;UM传输相关的状态变量和定时器取值。
- 如权利要求16或17所述的方法,其中,所述方法还包括:所述目标传输节点接收一个或者多个源传输节点发送的所述UE保持的层2传输状态的状态信息;若需要进行数据前转,所述方法还包括:所述目标传输节点接收一个或者多个源传输节点发送所述UE的需要进行前转的数据。
- 一种传输节点更换方法,包括:第一源传输节点向用户终端UE发送服务节点更换通知,其中,所述服务节点更换通知用于通知所述UE与目标传输节点建立连接,所述目标传输节点为一个或者多个传输节点,以使所述UE根据所述服务节点更换通知向所述目标传输节点发起随机接入过程,以及由所述UE在保持与一个或者多个源传输节点之间的全部或者部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,其中,所述目标传输节点为一个或者多个传输节点,所述一个或者多个源传输节点包括所述第一源传输节点,且所述源传输节点为所述UE在接收到所述服务节点更换通知之前连接的传输节点。
- 如权利要求23所述的方法,其中,所述服务节点更换通知用于通知所述UE由一个或者多个源传输节点更换至所述目标传输节点;或者所述服务节点更换通知用于通知所述UE断开已连接的多个源传输节点中部分传输节点的连接,并与所述目标传输节点建立连接;或者所述服务节点更换通知用于通知所述UE在已连接的一个或者多个源传输节点的基础上增加所述目标传输节点。
- 如权利要求23或24所述的方法,其中,在所述第一源传输节点向UE发送服务节点更换通知之前,所述方法还包括:所述第一源传输节点向所述UE发送传输节点配置集合,所述传输节点配置集合包括所述UE在多个传输节点的传输配置,其中,所述多个传输节点至少包括所述目标传输节点。
- 如权利要求23或24所述的方法,其中,所述服务节点更换通知包括所述UE在所述目标传输节点的传输配置;或者所述方法还包括:若所述第一源传输节点决定所述UE与目标传输节点建立连接,所述第一源传输节点向所述UE发送所述UE在所述目标传输节点的传输配置。
- 如权利要求23或24所述的方法,其中,所述服务节点更换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;UE在所述目标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
- 如权利要求27所述的方法,其中,所述第一源传输节点向UE发送服务节点更换通知,包括:所述第一源传输节点向所述UE发送一信令,其中,所述信令包括所述服务节点更换通知;其中,所述信令为无线资源控制RRC信令,所述RRC信令由集中传输节点发送的,并由所述第一源传输节点进行空口传输转发给所述UE的;或者所述信令为层2信令,所述层2信令为所述第一源传输节点根据集中传输节点发送的服务节点更换信息自行组织的信令;或者所述信令为层1信令,所述层1信令为所述第一源传输节点根据集中传输 节点发送的服务节点更换信息自行组织的信令。
- 如权利要求27所述的方法,还包括:所述第一源传输节点接收集中传输节点通过接口消息发送的服务节点更换通知,其中,通过所述接口消息发送的服务节点更换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;所述UE的测量结果;UE在所述目标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
- 如权利要求27所述的方法,其中,所述目标传输节点是接收到所述第一源传输节点发送的服务节点更换请求后,接纳所述UE的传输节点,且所述目标传输节点在接纳后向所述第一源传输节点返回所述UE在所述目标传输节点的传输配置;其中,所述服务节点更换请求包括如下一项或者多项:所述UE的测量结果;所述UE在所述源传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
- 如权利要求27所述的方法,其中,所述第一源传输节点向UE发送服务节点更换通知,包括:所述第一源传输节点向所述UE发送一信令,其中,所述信令包括所述服务节点更换通知;其中,所述信令为RRC信令,所述RRC信令由所述第一源传输节点产生的,将所述目标传输节点发送的传输配置通过容器的形式置于所述RRC信令,并由所述第一源传输节点进行空口传输转发给所述UE的;或者所述信令为层2信令,所述层2信令为所述第一源传输节点根据所述目标传输节点发送的传输配置自行组织的信令;或者所述信令为层1信令,所述层1信令为所述第一源传输节点根据所述目标传输节点发送的传输配置自行组织的信令。
- 如权利要求23或24所述的方法,其中,所述UE保持的层2传输状态包括如下一项或者多项:HARQ相关的传输状态;AM传输相关的状态变量和定时器取值;UM传输相关的状态变量和定时器取值。
- 一种用户终端UE,包括:第一接收模块,用于接收第一源传输节点发送的服务节点更换通知,其中,所述服务节点更换通知用于通知所述UE与目标传输节点建立连接,所述目标传输节点为一个或者多个传输节点;发起模块,用于根据所述服务节点更换通知向所述目标传输节点发起随机接入过程;传输模块,用于在保持与一个或者多个源传输节点之间的全部或者部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,其中,所述一个或者多个源传输节点包括所述第一源传输节点,且所述源传输节点为所述UE在接收到所述服务节点更换通知之前连接的传输节点。
- 如权利要求33所述的UE,其中,所述服务节点更换通知用于通知所述UE由一个或者多个源传输节点更换至所述目标传输节点;或者所述服务节点更换通知用于通知所述UE断开已连接的多个源传输节点中部分传输节点的连接,并与所述目标传输节点建立连接;或者所述服务节点更换通知用于通知所述UE在已连接的一个或者多个源传输节点的基础上增加所述目标传输节点。
- 如权利要求33所述的UE,其中,所述传输模块用于在保持与一个或者多个源传输节点之间部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,其中,所述部分层2传输状态 为所述服务节点更换通知中携带的指示信息指示需要保持的层2传输状态,或者所述部分层2传输状态为默认需要保持的层2传输状态。
- 如权利要求35所述的UE,其中,所述UE还包括:复位模块,用于对除所述部分层2传输状态之外的其他层2传输状态进行复位处理。
- 如权利要求33-36中任一项所述的UE,其中,所述传输模块用于在配置时间点,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输;或者所述传输模块用于在所述随机接入过程成功时,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输。
- 如权利要求33-36中任一项所述的UE,其中,所述UE还包括:第二接收模块,用于接收网络侧设备发送的传输节点配置集合,所述传输节点配置集合包括所述UE在多个传输节点的传输配置,其中,所述多个传输节点至少包括所述目标传输节点。
- 如权利要求33-36中任一项所述的UE,其中,所述服务节点更换通知包括所述UE在所述目标传输节点的传输配置;或者,所述UE还包括:第三接收模块,用于若网络侧设备决定所述UE与目标传输节点建立连接,接收所述网络侧设备发送的所述UE在所述目标传输节点的传输配置。
- 如权利要求33-36中任一项所述的UE,其中,所述服务节点更换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;UE在所述目标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
- 如权利要求40所述的UE,其中,所述第一接收模块用于接收第一源传输节点发送的一信令,其中,所述信令包括所述服务节点更换通知;其中,所述信令为无线资源控制RRC信令,所述RRC信令由集中传输节点发送的,并由所述第一源传输节点进行空口传输转发给所述UE的;或者所述信令为层2信令,所述层2信令为所述第一源传输节点根据集中传输节点发送的服务节点更换信息自行组织的信令;或者所述信令为层1信令,所述层1信令为所述第一源传输节点根据集中传输节点发送的服务节点更换信息自行组织的信令。
- 如权利要求40所述的UE,其中,所述第一接收模块用于接收所述第一源传输节点发送的一信令,其中,所述信令包括所述服务节点更换通知;其中,所述信令为RRC信令,所述RRC信令由所述第一源传输节点产生的,将所述目标传输节点发送的传输配置通过容器的形式置于所述RRC信令,并由所述第一源传输节点进行空口传输转发给所述UE的;或者所述信令为层2信令,所述层2信令为所述第一源传输节点根据所述目标传输节点发送的传输配置自行组织的信令;或者所述信令为层1信令,所述层1信令为所述第一源传输节点根据所述目标传输节点发送的传输配置自行组织的信令。
- 如权利要求33-36中任一项所述的UE,其中,所述UE保持的层2传输状态包括如下一项或者多项:HARQ相关的传输状态;AM传输相关的状态变量和定时器取值;UM传输相关的状态变量和定时器取值。
- 如权利要求33-36中任一项所述的UE,其中,所述UE在传输节点更换过程中安全相关的层的传输状态是默认保持,不需要复位。
- 一种传输节点,所述传输节点为目标传输节点,包括:第一接收模块,用于接收UE根据服务节点更换通知发起随机接入过程,其中,所述服务节点更换通知用于通知所述UE与目标传输节点建立连接;传输模块,用于在所述UE保持与一个或者多个源传输节点之间的全部或者部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与所述UE进行传输,其中,所述源传输节点为所述UE在接收到所述服务节点更换通知之前连接的传输节点。
- 如权利要求45所述的传输节点,其中,所述传输模块用于在所述UE保持与所述源传输节点之间的部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与所述UE进行传输,其中,所述部分层2传输状态为所述服务节点更换通知中携带的指示信息指示需要保持的层2传输状态,或者所述部分层2传输状态为默认需要保持的层2传输状态。
- 如权利要求45或46所述的传输节点,还包括:第二接收模块,用于接收集中传输节点通过接口消息发送的服务节点更换通知,其中,通过所述接口消息发送的服务节点更换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;所述UE的测量结果;UE在所述目标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
- 如权利要求45或46所述的传输节点,还包括:第三接收模块,用于接收第一源传输节点发送的服务节点更换请求;返回模块,用于判断是否接纳所述服务节点更换请求,若是,则向所述第一源传输节点返回确认消息,所述确认消息包括所述UE在所述目标传输节点的传输配置;其中,所述服务节点更换请求包括如下一项或者多项:所述UE的测量结果;所述UE在所述源传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
- 如权利要求45或46所述的传输节点,其中,所述UE保持的层2传输状态包括如下一项或者多项:HARQ相关的传输状态;AM传输相关的状态变量和定时器取值;UM传输相关的状态变量和定时器取值。
- 如权利要求45或46所述的传输节点,还包括:第四接收模块,用于接收一个或者多个源传输节点发送的所述UE保持的层2传输状态的状态信息;若需要进行数据前转,所述传输节点还包括:第五接收模块,用于接收一个或者多个源传输节点发送所述UE的需要进行前转的数据。
- 一种传输节点,所述传输节点为第一源传输节点,包括:第一发送模块,用于向UE发送服务节点更换通知,其中,所述服务节点更换通知用于通知所述UE与目标传输节点建立连接,所述目标传输节点为一个或者多个传输节点,以使所述UE根据所述服务节点更换通知向所述目标传输节点发起随机接入过程,以及由所述UE在保持与一个或者多个源传输节点之间的全部或者部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,其中,所述目标传输节点为一个或者多个传输节点,所述一个或者多个源传输节点包括所述第一源传输节点,且所述源传输节点为所述UE在接收到所述服务节点更换通知之前连接的传输节点。
- 如权利要求51所述的传输节点,还包括:第二发送模块,用于向所述UE发送传输节点配置集合,所述传输节点配置集合包括所述UE在多个传输节点的传输配置,其中,所述多个传输节点至少包括所述目标传输节点。
- 如权利要求51所述的传输节点,其中,所述服务节点更换通知包括所述UE在所述目标传输节点的传输配置;或者所述传输节点还包括:第三发送模块,用于若所述第一源传输节点决定所述UE与目标传输节点建立连接,向所述UE发送所述UE在所述目标传输节点的传输配置。
- 如权利要求51-53中任一项所述的传输节点,其中,所述服务节点更 换通知包括如下一项或者多项:所述UE的服务节点集合的移出信息;所述UE的服务节点集合的加入信息;UE在所述目标传输节点的传输配置;数据前转信息,所述数据前转信息用于指示是否需要数据前转;状态指示信息,所述状态指示信息用于指示是否需要保持层2传输状态,以及指示需要保持的全部或者部分的层2传输状态。
- 一种用户终端UE,包括:处理器、收发机、存储器,其中:所述处理器用于读取存储器中的程序,执行下列过程:通过收发机接收第一源传输节点发送的服务节点更换通知,其中,所述服务节点更换通知用于通知所述UE与目标传输节点建立连接,所述目标传输节点为一个或者多个传输节点;通过收发机根据所述服务节点更换通知向所述目标传输节点发起随机接入过程;在保持与一个或者多个源传输节点之间的全部或者部分层2(L2)传输状态的基础上,通过收发机使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,其中,所述一个或者多个源传输节点包括所述第一源传输节点,且所述源传输节点为所述UE在接收到所述服务节点更换通知之前连接的传输节点;所述收发机用于接收和发送数据。
- 一种传输节点,包括:处理器、收发机、存储器,其中:所述处理器用于读取存储器中的程序,执行下列过程:通过收发机接收用户终端UE根据服务节点更换通知发起随机接入过程,其中,所述服务节点更换通知用于通知所述UE与目标传输节点建立连接;在所述UE保持与一个或者多个源传输节点之间的全部或者部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与所述UE进行传输,其中,所述源传输节点为所述UE在接收到所述服务节点更换通知之前连接的传输节点,所述收发机用于接收和发送数据。
- 一种传输节点,包括:处理器、收发机、存储器,其中:所述处理器用于读取存储器中的程序,执行下列过程:通过收发机向用户终端UE发送服务节点更换通知,其中,所述服务节点更换通知用于通知所述UE与目标传输节点建立连接,所述目标传输节点为一个或者多个传输节点,以使所述UE根据所述服务节点更换通知向所述目标传输节点发起随机接入过程,以及由所述UE在保持与一个或者多个源传输节点之间的全部或者部分层2传输状态的基础上,使用所述UE在所述目标传输节点的传输配置与目标传输节点进行传输,其中,所述目标传输节点为一个或者多个传输节点,所述一个或者多个源传输节点包括所述第一源传输节点,且所述源传输节点为所述UE在接收到所述服务节点更换通知之前连接的传输节点,所述收发机用于接收和发送数据。
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WO2021036584A1 (zh) * | 2019-08-23 | 2021-03-04 | 维沃移动通信有限公司 | 信道传输方法、设备及系统 |
CN111835490B (zh) * | 2019-08-23 | 2022-02-11 | 维沃移动通信有限公司 | 一种信道传输方法、设备及系统 |
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