WO2016180125A1 - 一种小区无线网络临时标识分配的方法、接入网节点及ue - Google Patents

一种小区无线网络临时标识分配的方法、接入网节点及ue Download PDF

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Publication number
WO2016180125A1
WO2016180125A1 PCT/CN2016/078874 CN2016078874W WO2016180125A1 WO 2016180125 A1 WO2016180125 A1 WO 2016180125A1 CN 2016078874 W CN2016078874 W CN 2016078874W WO 2016180125 A1 WO2016180125 A1 WO 2016180125A1
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type
rnti
preamble sequence
prach time
frequency resource
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PCT/CN2016/078874
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English (en)
French (fr)
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刘星
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中兴通讯股份有限公司
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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • 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

Definitions

  • the present invention relates to the technical field of cell radio network temporary identification (C-RNTI) allocation in an ultra-dense network, and in particular to a method and access for cell radio network temporary identification (C-RNTI) allocation in an ultra-dense network.
  • C-RNTI cell radio network temporary identification
  • Ultra-Dense Network is one of the most promising technical directions for improving 5G system capacity and user data rate.
  • a low power node such as a RRU (Remote Radio Unite)/RRH (Remote Radio Head), a Pico eNB (micro base station), Home eNB (Home Base Station), Relay Node (Relay Node), etc.
  • RRU Remote Radio Unite
  • RRH Remote Radio Head
  • Pico eNB micro base station
  • Home eNB Home Base Station
  • Relay Node Relay Node
  • Intensive deployment of low-power nodes on the other hand poses a serious mobility problem: frequent handovers between UEs at low power nodes cause data interruptions and data rate fluctuations.
  • a dual connectivity solution is proposed in the 3rd Generation Partnership Project (3GPP) R12 release, ie the UE can be connected to a macro base station (Macro eNodeB or eNB) and a low power node at the same time.
  • the dual connectivity of R12 improves the mobility of the UE in a densely deployed low-power node scenario to a certain extent.
  • the dual connectivity fails to completely solve various aspects that affect the user experience during the handover process, such as the target base station admission control delay, X2 interface data forwarding delay, etc., and the dual connectivity cannot solve the problem that no macro base station coverage or UE has no dual connectivity. Scene.
  • the core idea of solving the ultra-dense network mobility problem through virtualization is that the UE or the one or more low-power nodes can form a virtual cell (Virtual Cell, VC for short) to serve the UE.
  • the partial context of the UE such as the cell radio network temporary identifier (C-RNTI) of the UE, the bearer identifier, the security key, and the security algorithm, does not change before and after the handover, provides a consistent communication experience for the UE, and reduces the user plane. Delay.
  • C-RNTI cell radio network temporary identifier
  • the C-RNTI is a cell-level parameter, and if the UE moves to another cell, the network side needs to reallocate a new C-RNTI.
  • a plurality of base stations (where the base station represents any access network node that can provide air interface access for the UE) can be connected to the same access network control node.
  • the allocation authority of the C-RNTI is placed on the access network control node to ensure that the UE moves within the range of the access network control node, the C-RNTI remains unchanged, that is, the C-RNTI becomes a parameter of the control node level.
  • the base station After receiving the random access preamble sequence sent by the UE, the base station carries the temporary C-RNTI in the random access Msg2. When the UE has been allocated the C-RNTI, the UE will bring its own C-RNTI to the base station in the random access Msg3, and the base station will reclaim the temporary C-RNTI after the contention is resolved. If the same mechanism is applied in the scenario where the access network control node is responsible for allocating the C-RNTI, the base station needs to request the access network control node to allocate the C-RNTI as the temporary C-RNTI before transmitting the Msg2, and reclaim the temporary C-RNTI. Then, the access network control node is notified to reclaim the C-RNTI, resulting in waste of resources between the base station and the access network control node.
  • the technical problem to be solved by the present invention is to provide a method for C-RNTI allocation, an access network node, and a UE, to save resources for signaling interaction between a base station and an access network control node.
  • a method for temporarily identifying a C-RNTI of a cell radio network temporarily includes:
  • the access network node determines whether to request the C-RNTI to be allocated to the access network control node according to the random access preamble sequence sent by the UE or the physical random access channel PRACH time-frequency resource used by the UE.
  • the method further includes:
  • the access network node divides the random access preamble sequence into a first type of preamble sequence and a second type of preamble sequence, or ⁇ and divides the PRACH time-frequency resource into a first type of PRACH time-frequency resource and a second PRACH-like time-frequency resources,
  • the access network node sends the configuration information of the preamble sequence or the configuration information of the PRACH time-frequency resource to the UE, and indicates that the UE uses the first part when the C-RNTI has been allocated.
  • a type of preamble sequence or a first type of PRACH time-frequency resource initiates random access, and if the C-RNTI is not allocated, the second type of preamble sequence or ⁇ and the second type of PRACH time-frequency resource are used to initiate randomization. Access.
  • the configuration information of the preamble sequence includes: a range of the first type of preamble sequence, or a range of the second type of preamble sequence;
  • the configuration information of the PRACH time-frequency resource includes: a range of the first type of PRACH time-frequency resources, or a range of the second-type PRACH time-frequency resources.
  • the access network node sends configuration information of the preamble sequence or configuration information of the PRACH time-frequency resource to the UE by using a system broadcast message.
  • the method further includes:
  • the access network node receives the configuration information of the C-RNTI sent by the access network control node, where the C-RNTI configuration information includes: a range of the first type C-RNTI, or ⁇ and the second type The scope of C-RNTI,
  • the step of determining, by the access network node, whether to request to allocate an C-RNTI to the access network control node according to the random access preamble sequence sent by the UE or the physical random access channel PRACH time-frequency resource used by the UE include:
  • the access network node learns that the UE has been allocated a C-RNTI by using the random access preamble sequence sent by the UE or the PRACH time-frequency resource used by the UE, the first node is used.
  • the class C-RNTI performs temporary scheduling. After the random access preamble sequence sent by the UE or the used PRACH time-frequency resource, the UE is not allocated the C-RNTI, and requests the allocation to the access network control node.
  • the second type of C-RNTI is used.
  • the access network node when the random access preamble sequence sent by the UE or the PRACH time-frequency resource used by the UE is used to learn that the UE has been allocated a C-RNTI,
  • the steps of temporarily scheduling using the first type of C-RNTI include:
  • the access network node Receiving, by the access network node, a first type of preamble sequence from the UE on any PRACH time-frequency resource, or receiving any preamble sequence from the UE on the first type of PRACH time-frequency resource, or After receiving the first type of preamble sequence from the UE, the first type of C-RNTI is carried in the random access response message sent to the UE, the first type The C-RNTI is selected from the idle first type C-RNTIs in the first type of C-RNTI range.
  • the method further includes:
  • the access network node After completing the contention resolution with the UE, the access network node reclaims the first type of C-RNTI, and sets the state of the first type C-RNTI to idle.
  • the access network node controls, by using the random access preamble sequence sent by the UE or the PRACH time-frequency resource used by the UE, that the UE is not allocated a C-RNTI, and then controls the access network.
  • the steps of the node requesting to allocate the second type C-RNTI include:
  • An access network node includes a receiving module and an allocation module, wherein
  • the receiving module is configured to: receive a random access message of the user equipment UE;
  • the allocating module is configured to: determine, according to the random access preamble sequence sent by the UE or the physical random access channel PRACH time-frequency resource used by the UE, whether to request the access network control node to allocate the temporary cell radio network temporary Identifies the C-RNTI.
  • the access network node further includes a setting module and a sending module, where
  • the setting module is configured to: divide the random access preamble sequence into a first type of preamble sequence and a second type of preamble sequence, or ⁇ and divide the PRACH time-frequency resource into a first type of PRACH time-frequency resource and a first Two types of PRACH time-frequency resources;
  • the sending module is configured to: send, to the UE, configuration information of a preamble sequence and a PRACH time-frequency resource, and indicate that the UE uses the first type of preamble sequence or if the C-RNTI has been allocated. And the first type of PRACH time-frequency resources initiates random access, and if the C-RNTI is not allocated, the second type of preamble sequence or the second type of PRACH time-frequency resources are used to initiate random access;
  • the configuration information of the preamble sequence includes: a range of a first type of preamble sequence, or a range of a second type of preamble sequence; and the configuration information of the PRACH time-frequency resource includes: a first type of PRACH The range of time-frequency resources, or the range of ⁇ and the second type of PRACH time-frequency resources.
  • the sending module is configured to send configuration information of the preamble sequence or configuration information of the PRACH time-frequency resource to the UE according to the following manner:
  • the configuration information of the preamble sequence or the configuration information of the PRACH time-frequency resource is sent to the UE by using a system broadcast message.
  • the receiving module is further configured to: receive configuration information of a C-RNTI sent by the access network control node, where the configuration information of the C-RNTI includes: a range of a first type of C-RNTI, Or ⁇ and the scope of the second type of C-RNTI,
  • the allocation module is configured to determine, according to the random access preamble sequence sent by the UE or the physical random access channel PRACH time-frequency resource used by the UE, whether to request allocation of C- to the access network control node.
  • RNTI using the first type C-RNTI in the case that the UE has been allocated a C-RNTI by using the random access preamble sequence sent by the UE or the PRACH time-frequency resource used by the UE Performing temporary scheduling; after obtaining, by the UE, the random access preamble sequence and the used PRACH time-frequency resource that the UE is not allocated a C-RNTI, requesting the access network control node to allocate a second type C -RNTI.
  • the allocating module is configured to use the first class if the UE has been allocated a C-RNTI by using a preamble sequence sent by the UE or a used PRACH time-frequency resource.
  • C-RNTI performs temporary scheduling:
  • the access network node Receiving, by the access network node, a first type of preamble sequence from the UE on any PRACH time-frequency resource, or receiving any preamble sequence from the UE on the first type of PRACH time-frequency resource, or After receiving the first type of preamble sequence from the UE, the first type of C-RNTI is carried in the random access response message sent to the UE.
  • the RNTI is selected from the idle first type C-RNTIs in the first type of C-RNTI range.
  • the setting module is further configured to: after completing the contention resolution with the UE, reclaim the first type of C-RNTI, and set the state of the first type of C-RNTI to idle.
  • the allocating module is configured to: after the UE obtains the C-RNTI by using the random access preamble sequence sent by the UE or the PRACH time-frequency resource used by the UE, according to the following manner, The network access control node requests to allocate a second type of C-RNTI:
  • a method for temporarily identifying a C-RNTI of a cell radio network temporarily includes:
  • the user equipment UE receives the configuration information of the preamble sequence sent by the access network node or the configuration information of the physical random access channel PRACH time-frequency resource;
  • the UE transmits a random access message according to whether a C-RNTI selection preamble sequence or a and a PRACH time-frequency resource have been allocated.
  • the configuration information of the preamble sequence includes: a range of the first type of preamble sequence, or a range of ⁇ and a second type of preamble sequence;
  • the configuration information of the PRACH time-frequency resource includes: a range of the first type of PRACH time-frequency resources, or a range of the second type of PRACH time-frequency resources.
  • the step of the UE sending a random access message according to whether a C-RNTI selection preamble sequence or a and a PRACH time-frequency resource has been allocated includes:
  • the UE selects the first type of preamble sequence on any PRACH time-frequency resource, or selects any preamble sequence on the first type of PRACH time-frequency resource, or selects the first type.
  • the preamble sequence sends a random access message to the access network node on the first type of PRACH resource;
  • the UE selects the second type of preamble sequence on any PRACH time-frequency resource, or selects any preamble sequence on the second type of PRACH time-frequency resource, or selects the second type.
  • the preamble sequence transmits a random access message to the access network node on the second type of PRACH resource.
  • a user equipment including a receiving module and a selecting module, wherein
  • the receiving module is configured to: receive configuration information of a preamble sequence sent by an access network node, or configuration information of a physical random access channel PRACH time-frequency resource;
  • the selecting module is configured to: send a random access message according to whether the user equipment has been allocated a cell network radio temporary identifier C-RNTI to select a preamble sequence and/and a PRACH time-frequency resource.
  • the selecting module is configured to send a random access message according to whether the user equipment has been allocated a C-RNTI selection preamble sequence and/and a PRACH time-frequency resource according to the following manner: if the user equipment has been allocated a C-RNTI, Selecting the first type of preamble sequence on any PRACH time-frequency resource, or selecting any preamble sequence on the first type of PRACH time-frequency resource, or selecting the first type of preamble sequence on the first type of PRACH resource to the access network Sending a random access message to the node; if the user equipment is not allocated the C-RNTI, selecting the second type of preamble sequence on any PRACH time-frequency resource, or selecting any preamble sequence on the second type of PRACH time-frequency resource, or The second type of preamble sequence is selected to send a random access message to the access network node on the second type of PRACH resource.
  • the present invention provides a method for C-RNTI allocation, an access network node, and a UE, which can save resources for signaling interaction between a base station and an access network control node.
  • FIG. 1 is a flowchart of a method for C-RNTI allocation according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a UE according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of an access network node according to an embodiment of the present invention.
  • FIG. 4 is a schematic flow chart of a first embodiment of the present invention.
  • Figure 5 is a schematic flow chart of Embodiment 2 of the present invention.
  • FIG. 6 is a schematic flow chart of a third embodiment of the present invention.
  • FIG. 7 is a schematic flow chart of a fourth embodiment of the present invention.
  • FIG. 8 is a schematic flow chart of Embodiment 5 of the present invention.
  • the allocation authority of the cell radio temporary scheduling identifier C-RNTI of the UE is placed on the access network control node, and the C-RNTI remains unchanged when the UE moves within the control node of the access network.
  • the random access procedure according to the related art described above may cause waste of resources between the access network node and the access network control node that provide air interface access for the UE.
  • the present invention proposes a new method of C-RNTI allocation. Compared with the related art, the method of the present invention reduces signaling interaction between an access network control node and an access network node that provides air interface access for the UE.
  • An access network node that provides air interface access for a UE in the embodiment of the present invention is referred to as a first node, including but not limited to an eNB, an RRU/RRH, a Pico eNB, a Home eNB, a Relay Node, and the like.
  • the access network control node is referred to as a second node, and the node is an access network node that has C-RNTI allocation authority, including but not limited to an access network gateway (RAN GW) and a control plane anchor point (CP Anchor), an eNB that has C-RNTI allocation authority, and the like.
  • RAN GW access network gateway
  • CP Anchor control plane anchor point
  • eNB eNB that has C-RNTI allocation authority
  • the first node and the second node in the embodiment of the present invention may be connected by wire and wirelessly.
  • the first node and the second node in the embodiment of the present invention may be connected by a single hop and a multi-hop.
  • the UE when the related technology performs the C-RNTI allocation of the UE in the random access procedure, if the allocation management authority of the C-RNTI is reserved at the second node, the UE initiates random access to the first node, if The UE has been assigned a C-RNTI, and the first node still needs to request the second node. Assigning a C-RNTI causes a waste of air interface resources between the first node and the second node.
  • the C-RNTI allocation method divides a random access preamble into a first type of preamble sequence and a second type of preamble sequence or a PRACH (Physical Random Access Channel).
  • the random access channel is divided into a first type of PRACH time-frequency resource and a second type of PRACH time-frequency resource, so that the UE uses the first type of preamble sequence or ⁇ and the first part when the C-RNTI has been allocated.
  • a type of PRACH time-frequency resource initiates random access, and allows the UE to initiate random access using a second type of preamble sequence or a second type of PRACH time-frequency resource without being allocated a C-RNTI.
  • the C-RNTI allocation method further divides the C-RNTI into a first type C-RNTI and a second type C-RNTI.
  • the first node learns that the UE has been allocated the C-RNTI by using the preamble sequence sent by the UE or the used PRACH time-frequency resource, the first type of C-RNTI is used for temporary scheduling, and the UE is received. After the C-RNTI, the first type of C-RNTI is reclaimed.
  • the first node learns that the UE is not allocated the C-RNTI through the preamble sequence sent by the UE or the used PRACH time-frequency resource, requests the second node to allocate the second type C-RNTI, and uses the second node.
  • the allocated second type C-RNTI is scheduled, and the second type C-RNTI becomes the C-RNTI of the UE.
  • the method for C-RNTI allocation according to the embodiment of the present invention reduces signaling interaction between the first node and the second node.
  • a method for allocating a C-RNTI includes:
  • Step 11 The first node receives a random access message of the UE.
  • Step 12 Determine, according to the preamble sequence sent by the UE or the physical random access channel PRACH time-frequency resource used by the UE, whether to request the second node to allocate the C-RNTI.
  • the first node divides the random access preamble sequence into the first type of preamble sequence and the second type of preamble sequence or ⁇ and divides the PRACH time-frequency resource into the first type of PRACH time-frequency resources and the second type of PRACH. Frequency resources, and inform the UE of the preamble sequence or ⁇ and PRACH time-frequency resource configuration information.
  • the configuration information of the preamble sequence may be a range of the first type of preamble sequence, or a range of ⁇ and a second type of preamble sequence.
  • the configuration of the PRACH time-frequency resource may be a range of the first type of PRACH time-frequency resources, or ⁇ and the scope of the second type of PRACH time-frequency resources.
  • the notification of the configuration of the preamble sequence may be sent by a system broadcast message.
  • the notification of the configuration of the PRACH time-frequency resource may be sent by a system broadcast message.
  • the UE uses the first type of preamble sequence on any PRACH time-frequency resource, or uses any preamble sequence on the first type of PRACH time-frequency resource, or uses the first type of preamble sequence in the first A type of PRACH resource initiates random access to the first node.
  • the UE uses the second type of preamble sequence on any PRACH time-frequency resource, or uses any preamble sequence on the second type of PRACH time-frequency resource, or uses the second type of preamble sequence in the first
  • the second type of PRACH resource initiates random access to the first node.
  • the second node divides the C-RNTI into a first type C-RNTI and a second type C-RNTI, and notifies the configuration of the first node C-RNTI.
  • the configuration of the C-RNTI may be a range of the first type C-RNTI or ⁇ and the second type C-RNTI.
  • the first type of C-RNTI receives the first type of preamble sequence from the UE on the any PRACH time-frequency resource, or the first node receives any arbitrarily from the UE on the first type of PRACH time-frequency resource.
  • the preamble sequence, or the first node receives the first type of preamble sequence from the UE on the first type of PRACH time-frequency resources, and is carried by the first node in the random access Msg2 and sent to the UE.
  • the first node carries the first type of C-RNTI that is sent to the UE in the random access Msg2, and is reclaimed by the first node after the first node and the UE complete the contention resolution by using the random access Msg4.
  • the first node carries the first type of C-RNTI that is sent to the UE in the random access Msg2, and the first type of C-RNTI is idle in the first type of C-RNTI. Choose among.
  • the first type C-RNTI becomes the idle first type C. -RNTI.
  • the second type of C-RNTI receives the second type of preamble sequence from the UE on the any PRACH time-frequency resource, or the first node receives any arbitrarily from the UE on the second type of PRACH time-frequency resource.
  • a preamble sequence or the first node receives the UE from the second type of PRACH time-frequency resources
  • the first node is carried in the random access Msg2 and sent to the UE.
  • the first node carries a second type of C-RNTI that is sent to the UE in the random access Msg2, a second type of preamble sequence sent by the UE at the first node, or a second type of PRACH time-frequency resource used. After determining that the UE is not assigned a C-RNTI, the first node requests the second node to obtain.
  • the second node After receiving the message that the first node requests to obtain the second type of C-RNTI, the second node selects an idle second type C-RNTI to reply in the range of the second type of C-RNTI.
  • the UE randomly accesses the second type C-RNTI received in the Msg2 as its own C-RNTI.
  • FIG. 2 is a schematic diagram of a UE according to an embodiment of the present invention. As shown in FIG. 2, the UE in this embodiment includes:
  • the receiving module 201 is configured to: receive a preamble sequence sent by the access network node or a configuration information of a physical random access channel PRACH time-frequency resource;
  • the selecting module 202 is configured to: send a random access message according to whether the C-RNTI has been allocated a preamble sequence or a and a PRACH time-frequency resource.
  • the selecting module 202 is specifically configured to: if the C-RNTI has been allocated, select the first type of preamble sequence on any PRACH time-frequency resource, or select any preamble sequence on the first type of PRACH time-frequency resource, Or selecting a first type of preamble sequence to send a random access message to the access network node on the first type of PRACH resource; if the C-RNTI is not allocated, selecting the second type of preamble sequence on any PRACH time-frequency resource, Or selecting any preamble sequence on the second type of PRACH time-frequency resource, or selecting the second type of preamble sequence to send a random access message to the access network node on the second type of PRACH resource.
  • FIG. 3 is a schematic diagram of a first node according to an embodiment of the present invention. As shown in FIG. 3, the first node in this embodiment includes:
  • the receiving module 301 is configured to: receive a random access message of the UE;
  • the allocating module 302 is configured to: according to the preamble sequence sent by the UE or the physical random access channel PRACH time-frequency resource used by the UE, determine whether to request the C-RNTI to be allocated to the access network control node.
  • the first node may further include:
  • the setting module 303 is configured to: divide the random access preamble sequence into the first type of preamble sequence and the second type of preamble sequence, or ⁇ and divide the PRACH time-frequency resource into the first type of PRACH time-frequency resources and the second type of PRACH Frequency resources,
  • the sending module 304 is configured to: send, to the UE, configuration information of a preamble sequence and/and a PRACH time-frequency resource, to indicate that the UE uses the first type of preamble sequence or ⁇ and the first part if the C-RNTI has been allocated.
  • a type of PRACH time-frequency resource initiates random access, and if no C-RNTI is allocated, a second type of preamble sequence or a second type of PRACH time-frequency resource is used to initiate random access, and the configuration information of the preamble sequence is used.
  • the configuration information of the PRACH time-frequency resource includes: a range of the first type of PRACH time-frequency resources, or ⁇ and a second type of PRACH The range of frequency resources.
  • the sending module 304 is configured to send, by using a system broadcast message, configuration information of a preamble sequence and/and a PRACH time-frequency resource to the UE.
  • the receiving module 301 may be further configured to: receive configuration information of a C-RNTI sent by the access network control node, where the configuration information of the C-RNTI includes: - the range of RNTI, or ⁇ and the scope of the second type of C-RNTI,
  • the allocation module 302 may be configured to: use the first type C- in the case that the UE has been allocated a C-RNTI by using a preamble sequence sent by the UE or a used PRACH time-frequency resource.
  • the RNTI performs temporary scheduling. After the UE transmits the preamble sequence and/and the used PRACH time-frequency resources to learn that the UE is not allocated the C-RNTI, it requests the access network control node to allocate the second type C-RNTI.
  • the setting module 303 may be further configured to: after completing the contention resolution with the UE, reclaim the first type C-RNTI, and set the state of the first type C-RNTI Set to idle.
  • Fig. 4 is a flow chart of the present embodiment, and a detailed description of the steps unrelated to the present invention is omitted here.
  • This embodiment is directed to a process in which a first node notifies a UE of a random access preamble sequence or a configuration of a PRACH time-frequency resource.
  • Step 101 The first node divides the available random access preamble sequence into a first type of preamble sequence and a second type of preamble sequence, or divides the available PRACH time-frequency resources into a first type of PRACH time-frequency resource and a second type of PRACH time-frequency.
  • the resource, or the available random access preamble sequence is divided into a first type of preamble sequence and a second type of preamble sequence, and the available PRACH time-frequency resources are divided into a first type of PRACH time-frequency resources and a second type of PRACH time-frequency resources.
  • the first node in the optional embodiment may modify the random access preamble sequence and/and the PRACH time-frequency resource according to parameters such as the number of C-RNTIs and the number of C-RNTIs in the UE that initiates random access in the current network. Configuration.
  • Step 102 The first node notifies the UE of the random access preamble sequence or the configuration information of the PRACH time-frequency resource.
  • the first node may notify the UE of the preamble sequence or the configuration information of the PRACH time-frequency resource by using SIB (System Information Broadcast) information.
  • SIB System Information Broadcast
  • Fig. 5 is a flow chart of the present embodiment, and a detailed description of the steps unrelated to the present invention is omitted here. This embodiment is directed to a process in which the second node notifies the first node C-RNTI configuration.
  • Step 201 The second node divides the C-RNTI into a first type C-RNTI and a second type C-RNTI.
  • the second node in this alternative embodiment may modify the configuration of the C-RNTI according to parameters such as the number of UE accesses in the current network.
  • Step 202 The second node notifies the configuration of the first node C-RNTI.
  • the second node may notify the configuration information of the first node C-RNTI when the first node initially accesses the second node.
  • the second node in the optional embodiment may also notify the configuration information of the first node C-RNTI after the C-RNTI configuration changes.
  • Fig. 6 is a flow chart of the present embodiment, and a detailed description of the steps unrelated to the present invention is omitted here.
  • This embodiment is directed to a process of performing random access in a scenario of initial access or connection reestablishment of a UE.
  • Step 301 The UE sends a random access preamble sequence (Msg1) to the first node.
  • Msg1 random access preamble sequence
  • the UE determines that the C-RNTI is not allocated, and then selects a second type of preamble (Preamble) and sends it to the first node on any PRACH time-frequency resource, or the UE arbitrarily selects a preamble sequence and the second type of PRACH time-frequency resource.
  • Preamble a second type of preamble
  • the above is sent to the first node, or the UE selects a second type of preamble sequence and sends it to the first node on the second type of PRACH time-frequency resources.
  • Step 302 The first node requests a second type of C-RNTI from the second node.
  • the first node After receiving the Msg1 sent by the UE, the first node determines that the UE is not allocated the C-RNTI from the second type of preamble sequence sent by the UE or the second type of PRACH time-frequency resources used by the UE, and therefore requests the second node to allocate.
  • the second type of C-RNTI The second type of C-RNTI.
  • Step 303 The second node returns a second type C-RNTI to the first node.
  • the second type of C-RNTI replied by the second node to the first node in the alternative embodiment is selected by the second node in the idle second type C-RNTI.
  • Step 304 The first node sends a random access response message (Msg2) to the UE.
  • Msg2 random access response message
  • the random access response message in the optional embodiment may include a preamble sequence identifier corresponding to the random access preamble sequence sent by the UE, an uplink transmission timing adjustment, and an RRC (Radio Resource Control) connection request message or The uplink resource allocated by the RRC connection reestablishment request message, and the like.
  • RRC Radio Resource Control
  • the random access response message in this alternative embodiment should also include the second type of C-RNTI acquired from the second node.
  • Step 305 The UE sends an RRC connection request RRC connection request message or an RRC connection reestablishment request message generated by the RRC layer to the first node.
  • the UE After receiving the random access corresponding message, the UE sends an RRC connection setup request message or an RRC connection reestablishment request message generated by the RRC layer by using the uplink resource allocated in the random access response message, requesting to establish an RRC connection or restore the RRC connection.
  • Step 306 The first node sends an RRC connection setup message or an RRC connection reestablishment message to the UE, and carries the contention resolution identifier.
  • the method in this embodiment ends, and the UE randomly accesses the second type C-RNTI carried in the Msg2 as its own C-RNTI.
  • the first node after receiving the random access preamble sequence sent by the UE, the first node sends a second type of preamble sequence from the UE or a second class used by the UE.
  • the PRACH time-frequency resource determines that the UE is not assigned a C-RNTI, and requests the second node to allocate the second type C-RNTI.
  • Fig. 7 is a flow chart of the present embodiment, and a detailed description of the steps unrelated to the present invention is omitted here.
  • This embodiment is directed to a scenario in which the UE switches to the target first node and has obtained the switched C-RNTI in the handover preparation phase.
  • the UE initiates a contention random access procedure to the target first node, and the target first node is connected to the target second node that has the second type of C-RNTI allocation authority.
  • Step 401 The UE sends a random access preamble sequence (Msg1) to the target first node.
  • Msg1 random access preamble sequence
  • a first type of preamble sequence is selected and sent to the first node on any PRACH time-frequency resource, or the UE arbitrarily selects a preamble sequence and is in the first type of PRACH time-frequency.
  • the resource is sent to the first node, or the UE selects a first type of preamble sequence and sends it to the first node on the first type of PRACH time-frequency resource.
  • Step 402 The target first node sends a random access response message (Msg2) to the UE.
  • Msg2 random access response message
  • the random access response message in the optional embodiment may include a preamble sequence identifier corresponding to the random access preamble sequence sent by the UE, an uplink transmission timing adjustment, an uplink resource allocated for the RRC connection reconfiguration complete message, and the like.
  • the random access Msg2 in this alternative embodiment should also carry the first type of C-RNTI.
  • the first type of C-RNTI carried in the random access Msg2 in this alternative embodiment is selected by the first node in the idle first type C-RNTI.
  • the first node After receiving the Msg1 sent by the UE, the first node determines that the UE has been allocated the C-RNTI from the first type of preamble sequence sent by the UE or the first type of PRACH time-frequency resources used by the UE, and therefore does not need to go to the second The node requests a second type of C-RNTI.
  • Step 403 The UE sends an RRC connection reconfiguration complete message generated by the RRC layer to the target first node.
  • the UE After receiving the Msg2, the UE sends an RRC layer to generate an RRC connection reconfiguration complete message and a C-RNTI of the UE by using an uplink resource allocated in the random access response message.
  • Step 404 The target first node sends a random access Msg4 message to the UE, and the target first node uses the C-RNTI scrambled PDCCH (Physical Downlink Control Channel) received from the UE.
  • the physical downlink control channel schedules an Msg4 message to indicate a contention resolution.
  • Step 405 The target first node reclaims the first type C-RNTI carried in the random access Msg2.
  • the method flow in this embodiment ends.
  • the target first node sends the first type of preamble sequence from the UE or the first type of PRACH time-frequency resource used by the UE
  • the UE has been allocated the C-RNTI, and then no longer requests the target second node.
  • the second type of C-RNTI reduces the signaling interaction between the first node and the second node.
  • Fig. 8 is a flow chart of the present embodiment, and a detailed description of the steps unrelated to the present invention is omitted here.
  • This embodiment is directed to the process of performing random access when the UE has uplink and downlink data arrival but the air interface is out of synchronization or there is uplink data arrival but no uplink scheduling request resource.
  • Step 501 The UE sends a random access preamble sequence (Msg1) to the target first node.
  • Msg1 random access preamble sequence
  • the UE selects a first type of preamble sequence (Preamble) and sends it to the first node on any PRACH time-frequency resource, or the UE arbitrarily selects a preamble sequence and sends it to the first node on the first type of PRACH time-frequency resource, or The UE selects a first type of preamble sequence and sends it to the first node on the first type of PRACH time-frequency resource.
  • Preamble preamble
  • the UE selects a first type of preamble sequence and sends it to the first node on any PRACH time-frequency resource.
  • Step 502 The first node sends a random access response message (Msg2) to the UE.
  • Msg2 random access response message
  • the random access response message in the optional embodiment may include a preamble sequence identifier corresponding to the random access preamble sequence sent by the UE, an uplink transmission timing adjustment, an uplink resource allocated for transmitting the C-RNTI of the UE, and the like.
  • the random access Msg2 in this alternative embodiment should also carry the first type of C-RNTI.
  • the first type of C-RNTI carried in the random access Msg2 in this alternative embodiment is selected by the first node in the idle first type C-RNTI.
  • the first node After receiving the Msg1 sent by the UE, the first node determines that the UE has been allocated the C-RNTI from the first type of preamble sequence sent by the UE or the first type of PRACH time-frequency resources used by the UE, and therefore does not need to go to the second The node requests a second type of C-RNTI.
  • Step 503 The UE sends uplink data to the first node.
  • the UE After receiving the random access Msg2 message, the UE uses the allocated in the random access response message.
  • the row resource transmits at least the C-RNTI of the UE.
  • Step 504 The first node sends a random access Msg4 message to the UE, and the first node uses the C-RNTI scrambled PDCCH scheduling Msg4 message received from the UE to indicate contention resolution.
  • Step 505 The first node reclaims the first type of C-RNTI carried in the random access Msg2.
  • the method flow in this embodiment ends.
  • the first node after the first node sends the C-RNTI from the first type of preamble sequence sent by the UE or the first type of PRACH time-frequency resource used by the UE, the first node does not request the second node from the second node.
  • C-RNTI reduces the signaling interaction between the first node and the second node.
  • the C-RNTI allocation authority when a new UE radio network temporary identifier C-RNTI allocation method in random access is designed, when the C-RNTI allocation authority is placed in the access network control node, if the UE has been When the C-RNTI is allocated, the access network node that provides the air interface access for the UE does not need to request the C-RNTI allocation from the access network control node, and reduces the access network node and the access network that provide air interface access. Control signaling interaction between nodes.
  • the embodiment of the invention further discloses a computer program, comprising program instructions, when the program instruction is executed by an access network node, so that the access network node can perform the C-RNTI allocation of any of the access network node sides. method.
  • the embodiment of the invention also discloses a carrier carrying the computer program.
  • the embodiment of the invention further discloses a computer program, comprising program instructions, when the program instruction is executed by the user equipment, so that the user equipment can perform the method of any C-RNTI allocation on the user equipment side.
  • the embodiment of the invention also discloses a carrier carrying the computer program.
  • the computer program can be implemented in a computer readable storage medium, the computer program being executed on a corresponding hardware platform (such as a system, device, device, device, etc.), when executed, including One or a combination of the steps of the method embodiments.
  • all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve. Thus, the invention is not limited to any specific combination of hardware and software.
  • the devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
  • each device/function module/functional unit in the above embodiment When each device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium.
  • the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • the technical solution of the present invention can save resources for signaling interaction between the base station and the access network control node, and therefore the invention has strong industrial applicability.

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Abstract

一种C-RNTI分配的方法、接入网节点及UE，该方法包括：接入网节点接收UE的随机接入消息；根据所述UE发送的前导序列或\和所述UE使用的PRACH时频资源，决定是否向接入网控制节点请求分配C-RNTI。根据本发明技术方案可以节省基站和接入网控制节点之间信令交互的资源。

Description

一种小区无线网络临时标识分配的方法、接入网节点及UE 技术领域
本文涉及超密集网络中的小区无线网络临时标识(C-RNTI)分配的技术领域，具体而言，涉及一种超密集网络中的小区无线网络临时标识(C-RNTI)分配的方法、接入网节点及UE。
背景技术
超密集网络(Ultra-Dense Network，简称UDN)是提升5G系统容量和用户数据速率最有前景的技术方向之一。在超密集网络中，低功率节点(Low Power Node，简称LPN)，如RRU(Remote Radio Unite，远端射频模块)/RRH(Remote Radio Head，射频拉远头)、Pico eNB(微基站)、Home eNB(家庭基站)、Relay Node(中继节点)等，被密集的部署，其密度甚至远大于4G中的小基站(small cell)增强技术。低功率节点之间的距离被缩小并可以互相监听到。而低功率节点和用户设备(User Equipment，简称UE)之间的距离也变得很近，使他们的发射功率可以大大的降低。
密集的部署低功率节点另一方面却带来严重的移动性问题：UE在低功率节点之间频繁切换造成数据中断和数据速率的波动。第三代合作伙伴(3rd Generation Partnership Project，简称3GPP)R12版本中提出了双连接的解决办法，即UE可同时连接到宏基站(Macro eNodeB或eNB)和低功率节点。R12的双连接在一定程度上提高了UE在密集部署的低功率节点场景中的移动性能。然而，双连接未能完全解决切换过程中影响用户体验的各个方面，如，目标基站接纳控制延迟，X2接口数据转发延迟等，并且，双连接也无法解决没有宏基站覆盖或UE没有双连接能力的场景。
通过虚拟化解决超密集网络移动性问题的核心思想在于以UE为中心，一个或多个低功率节点灵活组成虚拟小区(Virtual Cell，简称VC)为UE服务。UE的部分上下文，如，UE的小区无线网络临时标识(C-RNTI)，承载标识，安全密钥和安全算法等，在切换前后不发生改变，为UE提供一致的通信体验，降低用户面的时延。
然而，C-RNTI是小区级别的参数，如果UE移动到其他小区，网络侧需要重新分配新的C-RNTI。相关技术中，多个基站(这里的基站代表的是任何可以为UE提供空口接入的接入网节点)可以连接至同一接入网控制节点。将C-RNTI的分配权限放在接入网控制节点可以保证UE在该接入网控制节点范围内移动时，C-RNTI保持不变，即，C-RNTI成为控制节点级别的参数。
相关技术随机接入过程中，基站在收到UE发送的随机接入前导序列后，在随机接入Msg2里携带临时C-RNTI。当UE已经被分配了C-RNTI的时候，UE会在随机接入Msg3将自己的C-RNTI带给基站，基站则在竞争解决后将临时C-RNTI收回。如果同样的机制应用在由接入网控制节点负责分配C-RNTI的场景中，基站需要在发送Msg2之前向接入网控制节点请求分配C-RNTI作为临时C-RNTI，在临时C-RNTI收回后通知接入网控制节点收回该C-RNTI，造成了基站和接入网控制节点之间资源的浪费。
发明内容
本发明要解决的技术问题是提供一种C-RNTI分配的方法、接入网节点及UE，以节省基站和接入网控制节点之间信令交互的资源。
为了解决上述技术问题，采用如下技术方案：
一种小区无线网络临时标识C-RNTI分配的方法，包括：
接入网节点接收用户设备UE的随机接入消息；
所述接入网节点根据所述UE发送的随机接入前导序列或\和所述UE使用的物理随机接入信道PRACH时频资源，决定是否向接入网控制节点请求分配C-RNTI。
可选地，该方法还包括：
所述接入网节点将所述随机接入前导序列划分为第一类前导序列和第二类前导序列，或\和将所述PRACH时频资源划分为第一类PRACH时频资源和第二类PRACH时频资源，
所述接入网节点向所述UE发送前导序列的配置信息或\和PRACH时频资源的配置信息，指示所述UE在已经被分配C-RNTI的情况下，使用所述第 一类前导序列或\和第一类PRACH时频资源发起随机接入，在没有被分配C-RNTI的情况下，使用所述第二类前导序列或\和第二类PRACH时频资源发起随机接入。
可选地，所述前导序列的配置信息包括：所述第一类前导序列的范围，或\和所述第二类前导序列的范围；
所述PRACH时频资源的配置信息包括：所述第一类PRACH时频资源的范围，或\和所述第二类PRACH时频资源的范围。
可选地，所述接入网节点是通过系统广播消息向所述UE发送前导序列的配置信息或\和PRACH时频资源的配置信息的。
可选地，该方法还包括：
所述接入网节点接收所述接入网控制节点发送的C-RNTI的配置信息，其中，所述C-RNTI的配置信息包括：第一类C-RNTI的范围，或\和第二类C-RNTI的范围，
所述接入网节点根据所述UE发送的随机接入前导序列或\和所述UE使用的物理随机接入信道PRACH时频资源，决定是否向接入网控制节点请求分配C-RNTI的步骤包括：
所述接入网节点通过所述UE发送的所述随机接入前导序列或\和所述UE使用的PRACH时频资源获知所述UE已经被分配C-RNTI的情况下，使用所述第一类C-RNTI进行临时调度；通过UE发送的所述随机接入前导序列或\和使用的PRACH时频资源获知所述UE没有被分配C-RNTI后，向所述接入网控制节点请求分配所述第二类C-RNTI。
可选地，所述接入网节点通过所述UE发送的所述随机接入前导序列或\和所述UE使用的PRACH时频资源获知所述UE已经被分配了C-RNTI的情况下，使用所述第一类C-RNTI进行临时调度的步骤包括：
所述接入网节点在任意PRACH时频资源上收到来自所述UE的第一类前导序列，或在第一类PRACH时频资源上收到来自所述UE的任意前导序列，或在第一类PRACH时频资源上收到来自所述UE的第一类前导序列后，在发送给所述UE的随机接入响应消息里携带所述第一类C-RNTI，所述第一类 C-RNTI是从所述第一类C-RNTI范围内的空闲第一类C-RNTI中选择的。
可选地，该方法还包括：
所述接入网节点在与所述UE完成竞争解决后，收回所述第一类C-RNTI，将所述第一类C-RNTI的状态设置为空闲。
可选地，所述接入网节点通过UE发送的所述随机接入前导序列或\和所述UE使用的PRACH时频资源获知UE没有被分配C-RNTI后，向所述接入网控制节点请求分配第二类C-RNTI的步骤包括：
所述接入网节点在任意PRACH时频资源上收到来自所述UE的第二类前导序列，或在所述第二类PRACH时频资源上收到来自所述UE的任意前导序列，或在所述第二类PRACH时频资源上收到来自所述UE的第二类前导序列后，向所述接入网控制节点请求分配所述第二类C-RNTI。
一种接入网节点，包括接收模块和分配模块，其中
所述接收模块设置成：接收用户设备UE的随机接入消息；
所述分配模块设置成：根据所述UE发送的随机接入前导序列或\和所述UE使用的物理随机接入信道PRACH时频资源，决定是否向接入网控制节点请求分配小区无线网络临时标识C-RNTI。
可选地，该接入网节点还包括设置模块和发送模块，其中
所述设置模块设置成：将所述随机接入前导序列划分为第一类前导序列和第二类前导序列，或\和将所述PRACH时频资源划分为第一类PRACH时频资源和第二类PRACH时频资源；
所述发送模块设置成：向所述UE发送前导序列或\和PRACH时频资源的配置信息，指示所述UE在已经被分配C-RNTI的情况下，使用所述第一类前导序列或\和第一类PRACH时频资源发起随机接入，在没有被分配C-RNTI的情况下，使用所述第二类前导序列或\和第二类PRACH时频资源发起随机接入；
其中，所述前导序列的配置信息包括：第一类前导序列的范围，或\和第二类前导序列的范围；所述PRACH时频资源的配置信息包括：第一类PRACH 时频资源的范围，或\和第二类PRACH时频资源的范围。
可选地，所述发送模块设置成按照如下方式向所述UE发送前导序列的配置信息或\和PRACH时频资源的配置信息：
通过系统广播消息向所述UE发送前导序列的配置信息或\和PRACH时频资源的配置信息。
可选地，所述接收模块还设置成：接收所述接入网控制节点发送的C-RNTI的配置信息，其中，所述C-RNTI的配置信息包括：第一类C-RNTI的范围，或\和第二类C-RNTI的范围，
所述分配模块设置成按照如下方式根据所述UE发送的随机接入前导序列或\和所述UE使用的物理随机接入信道PRACH时频资源，决定是否向接入网控制节点请求分配C-RNTI：通过所述UE发送的所述随机接入前导序列或\和所述UE使用的PRACH时频资源获知所述UE已经被分配C-RNTI的情况下，使用所述第一类C-RNTI进行临时调度；通过UE发送的所述随机接入前导序列或\和使用的PRACH时频资源获知所述UE没有被分配C-RNTI后，向所述接入网控制节点请求分配第二类C-RNTI。
可选地，所述分配模块设置成按照如下方式通过所述UE发送的前导序列或\和使用的PRACH时频资源获知所述UE已经被分配C-RNTI的情况下，使用所述第一类C-RNTI进行临时调度：
所述接入网节点在任意PRACH时频资源上收到来自所述UE的第一类前导序列，或在第一类PRACH时频资源上收到来自所述UE的任意前导序列，或在第一类PRACH时频资源上收到来自所述UE的第一类前导序列后，在发送给所述UE的随机接入响应消息里携带所述第一类C-RNTI，所述第一类C-RNTI是从所述第一类C-RNTI范围内的空闲第一类C-RNTI中选择的。
可选地，所述设置模块还设置成：在与所述UE完成竞争解决后，收回所述第一类C-RNTI，将所述第一类C-RNTI的状态设置为空闲。
可选地，所述分配模块设置成按照如下方式通过UE发送的所述随机接入前导序列或\和所述UE使用的PRACH时频资源获知UE没有被分配C-RNTI后，向所述接入网控制节点请求分配第二类C-RNTI：
所述接入网节点在任意PRACH时频资源上收到来自所述UE的第二类前导序列，或在所述第二类PRACH时频资源上收到来自所述UE的任意前导序列，或在所述第二类PRACH时频资源上收到来自所述UE的第二类前导序列后，向所述接入网控制节点请求分配所述第二类C-RNTI。
一种小区无线网络临时标识C-RNTI分配的方法，包括：
用户设备UE接收接入网节点发送的前导序列的配置信息或\和物理随机接入信道PRACH时频资源的配置信息；
所述UE根据是否已被分配C-RNTI选择前导序列或\和PRACH时频资源来发送随机接入消息。
可选地，所述前导序列的配置信息包括：第一类前导序列的范围，或\和第二类前导序列的范围；
所述PRACH时频资源的配置信息包括：第一类PRACH时频资源的范围，或\和第二类PRACH时频资源的范围。
可选地，所述UE根据是否已被分配C-RNTI选择前导序列或\和PRACH时频资源来发送随机接入消息的步骤包括：
若所述用户设备已被分配C-RNTI，则所述UE选择第一类前导序列在任意PRACH时频资源上，或选择任意前导序列在第一类PRACH时频资源上，或选择第一类前导序列在第一类PRACH资源上向所述接入网节点发送随机接入消息；
若所述用户设备未被分配C-RNTI，则所述UE选择第二类前导序列在任意PRACH时频资源上，或选择任意前导序列在第二类PRACH时频资源上，或选择第二类前导序列在第二类PRACH资源上向所述接入网节点发送随机接入消息。
一种用户设备，包括接收模块和选择模块，其中
所述接收模块设置成：接收接入网节点发送的前导序列的配置信息或\和物理随机接入信道PRACH时频资源的配置信息；
所述选择模块设置成：根据所述用户设备是否已被分配小区网络无线临时标识C-RNTI选择前导序列或\和PRACH时频资源来发送随机接入消息。
可选地，
所述选择模块设置成按照如下方式根据所述用户设备是否已被分配C-RNTI选择前导序列或\和PRACH时频资源来发送随机接入消息：若所述用户设备已被分配C-RNTI，则选择第一类前导序列在任意PRACH时频资源上，或选择任意前导序列在第一类PRACH时频资源上，或选择第一类前导序列在第一类PRACH资源上向所述接入网节点发送随机接入消息；若所述用户设备未被分配C-RNTI，则选择第二类前导序列在任意PRACH时频资源上，或选择任意前导序列在第二类PRACH时频资源上，或选择第二类前导序列在第二类PRACH资源上向所述接入网节点发送随机接入消息。
综上，本发明提供一种C-RNTI分配的方法、接入网节点及UE，可以节省基站和接入网控制节点之间信令交互的资源。
附图概述
为了清楚地说明本发明实施例或相关技术中的技术方案，下面将实施例或相关技术中所需要使用的附图作简单地介绍，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，可以根据这些附图获得其他的附图。
图1为本发明实施例的一种C-RNTI分配的方法的流程图；
图2为本发明实施例的UE的示意图；
图3为本发明实施例的接入网节点的示意图；
图4是本发明实施例一流程示意图；
图5是本发明实施例二流程示意图；
图6是本发明实施例三流程示意图；
图7是本发明实施例四流程示意图；
图8是本发明实施例五流程示意图。
本发明的较佳实施方式
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
超密集网络中，将UE的小区无线临时调度标识C-RNTI的分配权限放在接入网控制节点，可以保证UE在该接入网控制节点范围内移动时，C-RNTI保持不变。然而，如前述相关技术的随机接入过程会造成为UE提供空口接入的接入网节点和接入网控制节点之间资源的浪费。为解决这个问题，本发明提出了一种新的C-RNTI分配的方法。与相关技术相比，采用本发明所述方法，减少了接入网控制节点与为UE提供空口接入的接入网节点间的信令交互。
本发明实施例中将为UE提供空口接入的接入网节点称为第一节点，包括但不限于eNB，RRU/RRH、Pico eNB、Home eNB、Relay Node等。
本发明实施例中将接入网控制节点称为第二节点，该节点是拥有C-RNTI分配权限的接入网节点，包括但不限于接入网网关(RAN GW)、控制面锚点(CP Anchor)、拥有C-RNTI分配权限的eNB等。
本发明实施例中的第一节点和第二节点间可以通过有线和无线的方式连接。
本发明实施例中的第一节点和第二节点间可以通过单跳和多跳的方式连接。
下面将结合发明实施例中的附图，对本发明实施例中的技术方案进行详细、完整的描述，显然，所描述的实施例仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中提供的实施例，本领域中普通技术人员在没有做出创造性劳动的前提下获得的所有其他的实施例，都属于本发明保护的范围。
超密集网络中，相关技术在随机接入过程中进行UE的C-RNTI分配时，如果将C-RNTI的分配管理权限保留在第二节点，UE在向第一节点发起随机接入时，如果UE已经被分配了C-RNTI，第一节点依旧需要向第二节点请求 分配C-RNTI，会造成第一节点和第二节点间空口资源的浪费。
本发明实施例所述的C-RNTI分配的方法，将随机接入前导序列(Random Access Preamble)划分为第一类前导序列和第二类前导序列或\和将PRACH(Physical Random Access Channel，物理随机接入信道)时频资源划分为第一类PRACH时频资源和第二类PRACH时频资源，让UE在已经被分配了C-RNTI的情况下，使用第一类前导序列或\和第一类PRACH时频资源发起随机接入，而让UE在没有被分配C-RNTI的情况下，使用第二类前导序列或\和第二类PRACH时频资源发起随机接入。
本发明实施例所述的C-RNTI分配的方法，同时将C-RNTI划分为第一类C-RNTI和第二类C-RNTI。一方面，当第一节点通过UE发送的前导序列或\和使用的PRACH时频资源获知UE已经被分配了C-RNTI的情况下，使用第一类C-RNTI进行临时调度，在收到UE的C-RNTI后，收回第一类C-RNTI。另一方面，当第一节点通过UE发送的前导序列或\和使用的PRACH时频资源获知UE没有被分配C-RNTI后，向第二节点请求分配第二类C-RNTI，使用第二节点分配的第二类C-RNTI进行调度，所述第二类C-RNTI成为UE的C-RNTI。本发明实施例所述的C-RNTI分配的方法减少了第一节点和第二节点之间的信令交互。
如图1所示，本发明实施例的一种C-RNTI分配的方法，包括：
步骤11、第一节点接收UE的随机接入消息；
步骤12、根据所述UE发送的前导序列或\和所述UE使用的物理随机接入信道PRACH时频资源，决定是否向第二节点请求分配C-RNTI。
本实施例中，第一节点将随机接入前导序列划分为第一类前导序列和第二类前导序列或\和将PRACH时频资源划分为第一类PRACH时频资源和第二类PRACH时频资资源，并通知UE前导序列或\和PRACH时频资源的配置信息。
所述前导序列的配置信息可以是第一类前导序列的范围，或\和第二类前导序列的范围。
所述PRACH时频资源的配置可以是第一类PRACH时频资源的范围，或 \和第二类PRACH时频资源的范围。
所述前导序列的配置的通知可以通过系统广播消息发送。
所述PRACH时频资源的配置的通知可以通过系统广播消息发送。
当UE已经被分配C-RNTI的时候，UE使用第一类前导序列在任意PRACH时频资源上，或使用任意前导序列在第一类PRACH时频资源上，或使用第一类前导序列在第一类PRACH资源上向第一节点发起随机接入。
当UE没有被分配C-RNTI的时候，UE使用第二类前导序列在任意PRACH时频资源上，或使用任意前导序列在第二类PRACH时频资源上，或使用第二类前导序列在第二类PRACH资源上向第一节点发起随机接入。
第二节点将C-RNTI划分为第一类C-RNTI和第二类C-RNTI，并通知第一节点C-RNTI的配置。
所述C-RNTI的配置可以是第一类C-RNTI或\和第二类C-RNTI的范围。
所述第一类C-RNTI，在第一节点在任意PRACH时频资源上收到来自UE的第一类前导序列，或第一节点在第一类PRACH时频资源上收到来自UE的任意前导序列，或第一节点在第一类PRACH时频资源上收到来自UE的第一类前导序列后，由第一节点携带在随机接入Msg2里发送给UE。
其中，所述第一节点携带在随机接入Msg2里发送给UE的第一类C-RNTI，在第一节点与UE通过随机接入Msg4完成竞争解决后被第一节点收回。
其中，所述第一节点携带在随机接入Msg2里发送给UE的所述第一类C-RNTI，由第一节点在所述第一类C-RNTI范围内的空闲第一类C-RNTI中选择。
其中，第一节点与UE通过随机接入Msg4完成竞争解决并收回携带在随机接入Msg2里发送给UE的第一类C-RNTI后，该第一类C-RNTI成为空闲的第一类C-RNTI。
所述第二类C-RNTI，在第一节点在任意PRACH时频资源上收到来自UE的第二类前导序列，或第一节点在第二类PRACH时频资源上收到来自UE的任意前导序列，或第一节点在第二类PRACH时频资源上收到来自UE 的第二类前导序列后，由第一节点携带在随机接入Msg2里发送给UE。
其中，所述第一节点携带在随机接入Msg2里发送给UE的第二类C-RNTI，在第一节点通过UE发送的第二类前导序列或\和使用的第二类PRACH时频资源判断UE没有被分配C-RNTI后，由第一节点向第二节点请求获得。
其中，第二节点收到第一节点请求获得第二类C-RNTI的消息后，在所述第二类C-RNTI的范围内选择空闲的第二类C-RNTI进行回复。
其中，在竞争解决后，UE将随机接入Msg2里收到的第二类C-RNTI作为自己的C-RNTI。
图2为本发明实施例的UE的示意图，如图2所示，本实施例的UE包括：
接收模块201，设置成：接收接入网节点发送的前导序列或\和物理随机接入信道PRACH时频资源的配置信息；
选择模块202，设置成：根据是否已被分配C-RNTI选择前导序列或\和PRACH时频资源来发送随机接入消息。
其中，所述选择模块202，具体设置成：若已被分配C-RNTI，则选择第一类前导序列在任意PRACH时频资源上，或选择任意前导序列在第一类PRACH时频资源上，或选择第一类前导序列在第一类PRACH资源上向所述接入网节点发送随机接入消息；若未被分配C-RNTI，则选择第二类前导序列在任意PRACH时频资源上，或选择任意前导序列在第二类PRACH时频资源上，或选择第二类前导序列在第二类PRACH资源上向所述接入网节点发送随机接入消息。
图3为本发明实施例的第一节点的示意图，如图3所示，本实施例的第一节点包括：
接收模块301，设置成：接收UE的随机接入消息；
分配模块302，设置成：根据所述UE发送的前导序列或\和所述UE使用的物理随机接入信道PRACH时频资源，决定是否向接入网控制节点请求分配C-RNTI。
在一可选实施例中，所述第一节点还可以包括：
设置模块303，设置成：将随机接入前导序列划分为第一类前导序列和第二类前导序列，或\和将PRACH时频资源划分为第一类PRACH时频资源和第二类PRACH时频资源，
发送模块304，设置成：向所述UE发送前导序列或\和PRACH时频资源的配置信息，指示所述UE在已经被分配C-RNTI的情况下，使用第一类前导序列或\和第一类PRACH时频资源发起随机接入，在没有被分配C-RNTI的情况下，使用第二类前导序列或\和第二类PRACH时频资源发起随机接入，所述前导序列的配置信息包括：第一类前导序列的范围，或\和第二类前导序列的范围；所述PRACH时频资源的配置信息包括：第一类PRACH时频资源的范围，或\和第二类PRACH时频资源的范围。
其中，所述发送模块304，是通过系统广播消息向所述UE发送前导序列或\和PRACH时频资源的配置信息的。
在一可选实施例中，所述接收模块301，还可设置成：接收所述接入网控制节点发送的C-RNTI的配置信息，所述C-RNTI的配置信息包括：第一类C-RNTI的范围，或\和第二类C-RNTI的范围，
所述分配模块302，具体可以设置成：通过所述UE发送的前导序列或\和使用的PRACH时频资源获知所述UE已经被分配C-RNTI的情况下，使用所述第一类C-RNTI进行临时调度；通过UE发送的前导序列或\和使用的PRACH时频资源获知UE没有被分配C-RNTI后，向所述接入网控制节点请求分配第二类C-RNTI。
在一可选实施例中，所述设置模块303，还可设置成：在与所述UE完成竞争解决后，收回所述第一类C-RNTI，将所述第一类C-RNTI的状态设置为空闲。
以下以几个具体实施例对本发明的方法进行详细的说明。
实施例一
图4是本实施例的流程图，这里省略了与本发明无关的步骤的详细说明。本实施例针对的是第一节点通知UE随机接入前导序列或\和PRACH时频资源的配置的过程。
步骤101，第一节点将可用随机接入前导序列划分为第一类前导序列和第二类前导序列，或将可用PRACH时频资源划分为第一类PRACH时频资源和第二类PRACH时频资源，或将可用随机接入前导序列划分为第一类前导序列和第二类前导序列且将可用PRACH时频资源划分为第一类PRACH时频资源和第二类PRACH时频资源。
本可选实施例中的第一节点可以根据当前网络中发起随机接入的UE中有C-RNTI和没有C-RNTI的数量等参数，修改随机接入前导序列或\和PRACH时频资源的配置。
步骤102，第一节点通知UE随机接入前导序列或\和PRACH时频资源的配置信息。
本可选实施例中第一节点可通过广播SIB(System Information Broadcast，系统信息广播)信息通知UE前导序列或\和PRACH时频资源的配置信息。
实施例二
图5是本实施例的流程图，这里省略了与本发明无关的步骤的详细说明。本实施例针对的是第二节点通知第一节点C-RNTI配置的过程。
步骤201，第二节点将C-RNTI划分为第一类C-RNTI和第二类C-RNTI。
本可选实施例中的第二节点可以根据当前网络中UE接入的数量等参数，修改C-RNTI的配置。
步骤202，第二节点通知第一节点C-RNTI的配置。
本可选实施例中第二节点可以在第一节点初始接入第二节点的时候通知第一节点C-RNTI的配置信息。
本可选实施例中的第二节点也可以在C-RNTI配置改变后通知第一节点C-RNTI的配置信息。
实施例三
图6是本实施例的流程图，这里省略了与本发明无关的步骤的详细说明。本实施例针对的是UE初始接入或连接重建场景下执行随机接入的过程。
步骤301，UE向第一节点发送随机接入前导序列(Msg1)。
UE判断没有被分配C-RNTI，则选择一个第二类前导序列(Preamble)并在任意PRACH时频资源上发送给第一节点，或UE任意选择一个前导序列并在第二类PRACH时频资源上发送给向第一节点，或UE选择一个第二类前导序列并在第二类PRACH时频资源上发送给第一节点。
步骤302，第一节点向第二节点请求第二类C-RNTI。
第一节点在收到UE发送的Msg1后，从UE发送的第二类前导序列或\和UE使用的第二类PRACH时频资源判断UE没有被分配C-RNTI，因此向第二节点请求分配第二类C-RNTI。
步骤303，第二节点向第一节点回复第二类C-RNTI。
本可选实施例中的第二节点向第一节点回复的第二类C-RNTI由第二节点在空闲的第二类C-RNTI里选择。
步骤304，第一节点向UE发送随机接入响应消息(Msg2)。
本可选实施例中的随机接入响应消息可以包括与UE发送的随机接入前导序列对应的前导序列标识、上行传输定时调整、为RRC(Radio Resource Control，无线资源控制协议)连接请求消息或RRC连接重建请求消息分配的上行资源等。
本可选实施例中的随机接入响应消息还应该包括从第二节点获取的第二类C-RNTI。
步骤305，UE向第一节点发送RRC层生成的RRC连接请求消息或RRC连接重建请求消息。
UE在收到随机接入相应消息后，利用在随机接入响应消息中分配的上行资源发送RRC层生成的RRC连接建立请求消息或RRC连接重建请求消息，请求建立RRC连接或恢复RRC连接。
步骤306，第一节点向UE发送RRC连接建立消息或RRC连接重建消息，携带竞争解决标识。
至此，本实施例中的方法流程结束，UE将随机接入Msg2里携带的第二类C-RNTI作为自己的C-RNTI。本实施例中，第一节点在收到UE发送的随机接入前导序列后，从UE发送的第二类前导序列或\和UE使用的第二类 PRACH时频资源，判断UE没有被分配C-RNTI，才向第二节点请求分配第二类C-RNTI。
实施例四
图7是本实施例的流程图，这里省略了与本发明无关的步骤的详细说明。本实施例针对的是UE切换到目标第一节点，且已经在切换准备阶段获得切换后的C-RNTI的场景。UE向目标第一节点发起竞争随机接入过程，目标第一节点连接至拥有第二类C-RNTI分配权限的目标第二节点。
步骤401，UE向目标第一节点发送随机接入前导序列(Msg1)。
UE判断已被分配了C-RNTI，则选择一个第一类前导序列(Preamble)并在任意PRACH时频资源上发送给第一节点，或UE任意选择一个前导序列并在第一类PRACH时频资源上发送给向第一节点，或UE选择一个第一类前导序列并在第一类PRACH时频资源上发送给第一节点。
步骤402，目标第一节点向UE发送随机接入响应消息(Msg2)。
本可选实施例中的随机接入响应消息可以包括与UE发送的随机接入前导序列对应的前导序列标识、上行传输定时调整、为RRC连接重配置完成消息分配的上行资源等。
本可选实施例中的随机接入Msg2还应该携带有第一类C-RNTI。
本可选实施例中的随机接入Msg2里携带的第一类C-RNTI由第一节点在空闲的第一类C-RNTI里选择。
第一节点在收到UE发送的Msg1后，从UE发送的第一类前导序列或\和UE使用的第一类PRACH时频资源判断UE已经被分配了C-RNTI，因此不需要向第二节点请求第二类C-RNTI。
步骤403，UE向目标第一节点发送RRC层生成的RRC连接重配置完成消息。
UE在收到Msg2后，利用在随机接入响应消息中分配的上行资源发送RRC层生成RRC连接重配置完成消息以及UE的C-RNTI。
步骤404，目标第一节点向UE发送随机接入Msg4消息，目标第一节点使用从UE收到的C-RNTI加扰的PDCCH(Physical Downlink Control Channel， 物理下行控制信道)调度Msg4消息，用以指示竞争解决。
步骤405，目标第一节点收回在随机接入Msg2里携带的第一类C-RNTI。
至此，本实施例中的方法流程结束。上述流程中，目标第一节点从UE发送的第一类前导序列或\和UE使用的第一类PRACH时频资源发现UE已经被分配了C-RNTI后，不再向目标第二节点请求第二类C-RNTI，减少了第一节点和第二节点之间的信令交互。
实施例五
图8是本实施例的流程图，这里省略了与本发明无关的步骤的详细说明。本实施例针对的是UE有上下行数据到达但空口失步或有上行数据到达但没有上行调度请求资源的情况下，进行随机接入的过程。
步骤501，UE向目标第一节点发送随机接入前导序列(Msg1)。
UE选择一个第一类前导序列(Preamble)并在任意PRACH时频资源上发送给第一节点，或UE任意选择一个前导序列并在第一类PRACH时频资源上发送给向第一节点，或UE选择一个第一类前导序列并在第一类PRACH时频资源上发送给第一节点。
步骤502，第一节点向UE发送随机接入响应消息(Msg2)。
本可选实施例中的随机接入响应消息可以包括与UE发送的随机接入前导序列对应的前导序列标识、上行传输定时调整、为发送UE的C-RNTI分配的上行资源等。
本可选实施例中的随机接入Msg2还应该携带有第一类C-RNTI。
本可选实施例中的随机接入Msg2里携带的第一类C-RNTI由第一节点在空闲的第一类C-RNTI里选择。
第一节点在收到UE发送的Msg1后，从UE发送的第一类前导序列或\和UE使用的第一类PRACH时频资源判断UE已经被分配了C-RNTI，因此不需要向第二节点请求第二类C-RNTI。
步骤503，UE向第一节点发送上行数据。
UE在收到随机接入Msg2消息后，利用在随机接入响应消息中分配的上 行资源至少发送UE的C-RNTI。
步骤504，第一节点向UE发送随机接入Msg4消息，第一节点使用从UE收到的C-RNTI加扰的PDCCH调度Msg4消息，用以指示竞争解决。
步骤505，第一节点收回在随机接入Msg2里携带的第一类C-RNTI。
至此，本实施例中的方法流程结束。上述流程中，第一节点从UE发送的第一类前导序列或\和UE使用的第一类PRACH时频资源发现UE已经被分配了C-RNTI后，不再向第二节点请求第二类C-RNTI，减少了第一节点和第二节点之间的信令交互。
本发明实施例通过设计一种随机接入中的新的UE无线网络临时标识C-RNTI分配的方法，让C-RNTI的分配权限被放置在接入网控制节点的时候，在UE如果已经被分配了C-RNTI的情况下，为UE提供空口接入的接入网节点不需要向接入网控制节点请求C-RNTI的分配，减少了提供空口接入的接入网节点与接入网控制节点间的信令交互。
本发明实施例还公开了一种计算机程序，包括程序指令，当该程序指令被接入网节点执行时，使得该接入网节点可执行上述任意的接入网节点侧的C-RNTI分配的方法。
本发明实施例还公开了一种载有所述的计算机程序的载体。
本发明实施例还公开了一种计算机程序，包括程序指令，当该程序指令被用户设备执行时，使得该用户设备可执行上述任意的用户设备侧的C-RNTI分配的方法。
本发明实施例还公开了一种载有所述的计算机程序的载体。
在阅读并理解了附图和详细描述后，可以明白其他方面。
本领域普通技术人员可以理解上述实施例的全部或部分步骤可以使用计 算机程序流程来实现，所述计算机程序可以存储于一计算机可读存储介质中，所述计算机程序在相应的硬件平台上(如系统、设备、装置、器件等)执行，在执行时，包括方法实施例的步骤之一或其组合。
可选地，上述实施例的全部或部分步骤也可以使用集成电路来实现，这些步骤可以被分别制作成一个个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。
上述实施例中的各装置/功能模块/功能单元可以采用通用的计算装置来实现，它们可以集中在单个的计算装置上，也可以分布在多个计算装置所组成的网络上。
上述实施例中的各装置/功能模块/功能单元以软件功能模块的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。上述提到的计算机可读取存储介质可以是只读存储器，磁盘或光盘等。
任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以权利要求所述的保护范围为准。
工业实用性
本发明技术方案可以节省基站和接入网控制节点之间信令交互的资源，因此本发明具有很强的工业实用性。

Claims (20)

  1. 一种小区无线网络临时标识C-RNTI分配的方法，包括：
    接入网节点接收用户设备UE的随机接入消息；
    所述接入网节点根据所述UE发送的随机接入前导序列或\和所述UE使用的物理随机接入信道PRACH时频资源，决定是否向接入网控制节点请求分配C-RNTI。
  2. 如权利要求1所述的C-RNTI分配的方法，该方法还包括：
    所述接入网节点将所述随机接入前导序列划分为第一类前导序列和第二类前导序列，或\和将所述PRACH时频资源划分为第一类PRACH时频资源和第二类PRACH时频资源，
    所述接入网节点向所述UE发送前导序列的配置信息或\和PRACH时频资源的配置信息，指示所述UE在已经被分配C-RNTI的情况下，使用所述第一类前导序列或\和第一类PRACH时频资源发起随机接入，在没有被分配C-RNTI的情况下，使用所述第二类前导序列或\和第二类PRACH时频资源发起随机接入。
  3. 如权利要求2所述的C-RNTI分配的方法，其中，
    所述前导序列的配置信息包括：所述第一类前导序列的范围，或\和所述第二类前导序列的范围；
    所述PRACH时频资源的配置信息包括：所述第一类PRACH时频资源的范围，或\和所述第二类PRACH时频资源的范围。
  4. 如权利要求2所述的C-RNTI分配的方法，其中，
    所述接入网节点是通过系统广播消息向所述UE发送前导序列的配置信息或\和PRACH时频资源的配置信息的。
  5. 如权利要求2-4中任一项所述的C-RNTI分配的方法，该方法还包括：
    所述接入网节点接收所述接入网控制节点发送的C-RNTI的配置信息，其中，所述C-RNTI的配置信息包括：第一类C-RNTI的范围，或\和第二类C-RNTI的范围，
    所述接入网节点根据所述UE发送的随机接入前导序列或\和所述UE使用的物理随机接入信道PRACH时频资源，决定是否向接入网控制节点请求分配C-RNTI的步骤包括：
    所述接入网节点通过所述UE发送的所述随机接入前导序列或\和所述UE使用的PRACH时频资源获知所述UE已经被分配C-RNTI的情况下，使用所述第一类C-RNTI进行临时调度；通过UE发送的所述随机接入前导序列或\和使用的PRACH时频资源获知所述UE没有被分配C-RNTI后，向所述接入网控制节点请求分配所述第二类C-RNTI。
  6. 如权利要求5所述的C-RNTI分配的方法，其中，所述接入网节点通过所述UE发送的所述随机接入前导序列或\和所述UE使用的PRACH时频资源获知所述UE已经被分配了C-RNTI的情况下，使用所述第一类C-RNTI进行临时调度的步骤包括：
    所述接入网节点在任意PRACH时频资源上收到来自所述UE的第一类前导序列，或在第一类PRACH时频资源上收到来自所述UE的任意前导序列，或在第一类PRACH时频资源上收到来自所述UE的第一类前导序列后，在发送给所述UE的随机接入响应消息里携带所述第一类C-RNTI，所述第一类C-RNTI是从所述第一类C-RNTI范围内的空闲第一类C-RNTI中选择的。
  7. 如权利要求6所述的C-RNTI分配的方法，该方法还包括：
    所述接入网节点在与所述UE完成竞争解决后，收回所述第一类C-RNTI，将所述第一类C-RNTI的状态设置为空闲。
  8. 如权利要求5所述的C-RNTI分配的方法，其中，所述接入网节点通过UE发送的所述随机接入前导序列或\和所述UE使用的PRACH时频资源获知UE没有被分配C-RNTI后，向所述接入网控制节点请求分配第二类C-RNTI的步骤包括：
    所述接入网节点在任意PRACH时频资源上收到来自所述UE的第二类前导序列，或在所述第二类PRACH时频资源上收到来自所述UE的任意前导序列，或在所述第二类PRACH时频资源上收到来自所述UE的第二类前导序列后，向所述接入网控制节点请求分配所述第二类C-RNTI。
  9. 一种接入网节点，包括接收模块和分配模块，其中
    所述接收模块设置成：接收用户设备UE的随机接入消息；
    所述分配模块设置成：根据所述UE发送的随机接入前导序列或\和所述UE使用的物理随机接入信道PRACH时频资源，决定是否向接入网控制节点请求分配小区无线网络临时标识C-RNTI。
  10. 如权利要求9所述的接入网节点，该接入网节点还包括设置模块和发送模块，其中
    所述设置模块设置成：将所述随机接入前导序列划分为第一类前导序列和第二类前导序列，或\和将所述PRACH时频资源划分为第一类PRACH时频资源和第二类PRACH时频资源；
    所述发送模块设置成：向所述UE发送前导序列或\和PRACH时频资源的配置信息，指示所述UE在已经被分配C-RNTI的情况下，使用所述第一类前导序列或\和第一类PRACH时频资源发起随机接入，在没有被分配C-RNTI的情况下，使用所述第二类前导序列或\和第二类PRACH时频资源发起随机接入；
    其中，所述前导序列的配置信息包括：第一类前导序列的范围，或\和第二类前导序列的范围；所述PRACH时频资源的配置信息包括：第一类PRACH时频资源的范围，或\和第二类PRACH时频资源的范围。
  11. 如权利要求10所述的接入网节点，其中，所述发送模块设置成按照如下方式向所述UE发送前导序列的配置信息或\和PRACH时频资源的配置信息：
    通过系统广播消息向所述UE发送前导序列的配置信息或\和PRACH时频资源的配置信息。
  12. 如权利要求10-11中任一项所述的接入网节点，其中
    所述接收模块还设置成：接收所述接入网控制节点发送的C-RNTI的配置信息，其中，所述C-RNTI的配置信息包括：第一类C-RNTI的范围，或\和第二类C-RNTI的范围，
    所述分配模块设置成按照如下方式根据所述UE发送的随机接入前导序 列或\和所述UE使用的物理随机接入信道PRACH时频资源，决定是否向接入网控制节点请求分配C-RNTI：通过所述UE发送的所述随机接入前导序列或\和所述UE使用的PRACH时频资源获知所述UE已经被分配C-RNTI的情况下，使用所述第一类C-RNTI进行临时调度；通过UE发送的所述随机接入前导序列或\和使用的PRACH时频资源获知所述UE没有被分配C-RNTI后，向所述接入网控制节点请求分配第二类C-RNTI。
  13. 如权利要求12所述的接入网节点，其中：
    所述分配模块设置成按照如下方式通过所述UE发送的前导序列或\和使用的PRACH时频资源获知所述UE已经被分配C-RNTI的情况下，使用所述第一类C-RNTI进行临时调度：
    所述接入网节点在任意PRACH时频资源上收到来自所述UE的第一类前导序列，或在第一类PRACH时频资源上收到来自所述UE的任意前导序列，或在第一类PRACH时频资源上收到来自所述UE的第一类前导序列后，在发送给所述UE的随机接入响应消息里携带所述第一类C-RNTI，所述第一类C-RNTI是从所述第一类C-RNTI范围内的空闲第一类C-RNTI中选择的。
  14. 如权利要求13所述的接入网节点，其中：
    所述设置模块还设置成：在与所述UE完成竞争解决后，收回所述第一类C-RNTI，将所述第一类C-RNTI的状态设置为空闲。
  15. 如权利要求12所述的接入网节点，其中
    所述分配模块设置成按照如下方式通过UE发送的所述随机接入前导序列或\和所述UE使用的PRACH时频资源获知UE没有被分配C-RNTI后，向所述接入网控制节点请求分配第二类C-RNTI：
    所述接入网节点在任意PRACH时频资源上收到来自所述UE的第二类前导序列，或在所述第二类PRACH时频资源上收到来自所述UE的任意前导序列，或在所述第二类PRACH时频资源上收到来自所述UE的第二类前导序列后，向所述接入网控制节点请求分配所述第二类C-RNTI。
  16. 一种小区无线网络临时标识C-RNTI分配的方法，包括：
    用户设备UE接收接入网节点发送的前导序列的配置信息或\和物理随机 接入信道PRACH时频资源的配置信息；
    所述UE根据是否已被分配C-RNTI选择前导序列或\和PRACH时频资源来发送随机接入消息。
  17. 如权利要求16所述的C-RNTI分配的方法，其中
    所述前导序列的配置信息包括：第一类前导序列的范围，或\和第二类前导序列的范围；
    所述PRACH时频资源的配置信息包括：第一类PRACH时频资源的范围，或\和第二类PRACH时频资源的范围。
  18. 如权利要求16或17所述的方法，其中，所述UE根据是否已被分配C-RNTI选择前导序列或\和PRACH时频资源来发送随机接入消息的步骤包括：
    若所述用户设备已被分配C-RNTI，则所述UE选择第一类前导序列在任意PRACH时频资源上，或选择任意前导序列在第一类PRACH时频资源上，或选择第一类前导序列在第一类PRACH资源上向所述接入网节点发送随机接入消息；
    若所述用户设备未被分配C-RNTI，则所述UE选择第二类前导序列在任意PRACH时频资源上，或选择任意前导序列在第二类PRACH时频资源上，或选择第二类前导序列在第二类PRACH资源上向所述接入网节点发送随机接入消息。
  19. 一种用户设备，包括接收模块和选择模块，其中
    所述接收模块设置成：接收接入网节点发送的前导序列的配置信息或\和物理随机接入信道PRACH时频资源的配置信息；
    所述选择模块设置成：根据所述用户设备是否已被分配小区网络无线临时标识C-RNTI选择前导序列或\和PRACH时频资源来发送随机接入消息。
  20. 如权利要求19所述的用户设备，其中：
    所述选择模块设置成按照如下方式根据所述用户设备是否已被分配C-RNTI选择前导序列或\和PRACH时频资源来发送随机接入消息：若所述用户设备已被分配C-RNTI，则选择第一类前导序列在任意PRACH时频资源上， 或选择任意前导序列在第一类PRACH时频资源上，或选择第一类前导序列在第一类PRACH资源上向所述接入网节点发送随机接入消息；若所述用户设备未被分配C-RNTI，则选择第二类前导序列在任意PRACH时频资源上，或选择任意前导序列在第二类PRACH时频资源上，或选择第二类前导序列在第二类PRACH资源上向所述接入网节点发送随机接入消息。
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WO2020199939A1 (en) * 2019-03-29 2020-10-08 Qualcomm Incorporated Preamble to demodulation reference signal mapping for random access procedures
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