WO2016197656A1 - 一种进行随机接入的方法和设备 - Google Patents

一种进行随机接入的方法和设备 Download PDF

Info

Publication number
WO2016197656A1
WO2016197656A1 PCT/CN2016/076985 CN2016076985W WO2016197656A1 WO 2016197656 A1 WO2016197656 A1 WO 2016197656A1 CN 2016076985 W CN2016076985 W CN 2016076985W WO 2016197656 A1 WO2016197656 A1 WO 2016197656A1
Authority
WO
WIPO (PCT)
Prior art keywords
user equipment
random access
cell
resource
contention
Prior art date
Application number
PCT/CN2016/076985
Other languages
English (en)
French (fr)
Inventor
赵亚利
许芳丽
Original Assignee
电信科学技术研究院
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=57504508&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2016197656(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by 电信科学技术研究院 filed Critical 电信科学技术研究院
Priority to US15/580,551 priority Critical patent/US10785808B2/en
Priority to EP16806554.8A priority patent/EP3310113B1/en
Priority to EP22203446.4A priority patent/EP4149199A1/en
Publication of WO2016197656A1 publication Critical patent/WO2016197656A1/zh

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0866Non-scheduled access, e.g. ALOHA using a dedicated channel for access
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/001Synchronization between nodes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/535Allocation or scheduling criteria for wireless resources based on resource usage policies
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0833Random access procedures, e.g. with 4-step access
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/11Allocation or use of connection identifiers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/20Manipulation of established connections
    • H04W76/27Transitions between radio resource control [RRC] states
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W80/00Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02Data link layer protocols
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/0005Synchronisation arrangements synchronizing of arrival of multiple uplinks

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a method and device for performing random access.
  • LTE Long Term Evolution
  • the base station allocates a random access preamble (Rain Acelless Preamble Index) for non-contention random access and a physical random access channel (Physical Random) used for random access to the user equipment (User Equipment, UE). Access Channel, PRACH) resources.
  • a random access preamble Roin Acelless Preamble Index
  • Physical Random Physical Random access channel
  • the UE sends the specified dedicated preamble to the base station on the designated PRACH resource according to the indicated ra-PreambleIndex and the PRACH resource used by the random access.
  • the base station calculates the uplink timing advance (TA) after receiving it.
  • TA uplink timing advance
  • the base station sends a random access response to the UE.
  • the random access response includes timing advance information and subsequent uplink transmission resource allocation uplink scheduling (UL grant), and the timing advance is used for the timing relationship of the UE subsequent uplink transmission.
  • UL grant uplink transmission resource allocation uplink scheduling
  • the UE selects a random access preamble and a PRACH resource, and uses the PRACH resource to send the selected random access preamble to the base station;
  • the base station receives the preamble, calculates the timing advance TA, and sends a random access response to the UE, where the random access response includes at least the timing advance information and the UL grant;
  • the UE sends an uplink transmission on the designated UL grant.
  • the contention resolution message the UE can judge whether the random access is successful according to Msg4.
  • Future communication systems may use high frequency bands (such as 5.9 GHz) as hotspot deployments for small cells.
  • high frequency bands such as 5.9 GHz
  • Mode 1 Standalone mode, that is, the cell can work as an independent cell, allowing the UE to access and camp separately.
  • Mode 2 Non-standalone mode, that is, the cell is used only as a resource, and the UE is not allowed to access and reside separately.
  • the current random access procedure has a long delay and cannot be applied in scenarios where the delay requirement is strict.
  • the present invention provides a method and a device for performing random access, which are used to solve the problem that the delay of the random access procedure existing in the prior art is relatively long and cannot be applied to a scenario where the delay requirement is strict.
  • the user equipment sends the user equipment identification information to the cell by using the resources in the dedicated contention pool;
  • the user equipment receives the contention resolution message from the cell, determining, according to the contention resolution message, whether the random access is successful.
  • determining, by the user equipment, a random access dedicated contention resource pool including:
  • the user equipment determines, according to the first resource information broadcasted by the cell, a random access dedicated contention resource pool.
  • the user equipment determines, according to the first resource information broadcasted by the cell, a random access dedicated contention resource pool, including:
  • the user equipment determines a plurality of random access dedicated contention resource pools according to the first resource information broadcasted by the cell, and selects a random access dedicated contention resource pool from the plurality of random access dedicated contention resource pools.
  • the user equipment sends the user equipment identification information to the cell by using the resource in the dedicated contention pool of the random access, including:
  • the user equipment sends the user equipment identification information to the cell by using the resources in the dedicated contention pool of the random access based on the downlink timing of the cell.
  • the random access destination is user equipment initial access or RRC connection reestablishment
  • the user equipment identification information is a CCCH SDU
  • the user equipment identification information is a C-RNTI MAC CE.
  • the user equipment determines, according to the contention resolution message, whether the random access is successful, including:
  • the CCCH SDU included in the contention resolution message is a CCCH SDU sent to the cell, determining that the random access is successful; otherwise, determining that the random access fails;
  • the contention resolution message includes a PDCCH that is addressed based on the C-RNTI MAC CE sent to the cell, determining that the random access is successful; otherwise, determining that the random access fails.
  • the user equipment after determining, by the user equipment, the random access dedicated contention resource pool, the user equipment further includes:
  • the user equipment is to the cell Send BSR information and/or some or all of the data that needs to be transmitted.
  • the user equipment receives the contention resolution message, including:
  • the user equipment random access destination is the initial access or the RRC connection reestablishment
  • the user equipment receives the contention resolution message or the resource scheduled by the CB-RNTI through the resource pool corresponding to the second resource information broadcasted by the cell. Receiving the contention resolution message; or
  • the user equipment receives the contention resolution message by using the PDCCH scheduled PDSCH resource addressed by the C-RNTI.
  • the method further includes:
  • the device randomly waits for a period of time, reselects the random access dedicated contention pool, and initiates random access again.
  • the cell broadcast is used to determine first resource information of the random access dedicated contention resource pool
  • the cell After receiving the user equipment identification information, the cell sends a contention resolution message to the user equipment.
  • the cell broadcasts the first resource information used to determine the random access dedicated contention resource pool, including:
  • the cell broadcasts the first resource information by using an SIB
  • the SIB is a new SIB different from the SIB in the current 3GPP TS 36.331 or an SIB obtained by extending the SIB in the 3GPP TS 36.331.
  • the cell further includes:
  • the cell allocates a C-RNTI to the user equipment.
  • the cell further includes:
  • the cell configures an uplink TA available in the cell for the user equipment.
  • the contention resolution message includes user equipment identification information
  • the contention resolution message is PDCCH scheduling information including an initial UL grant for a C-RNTI of the user equipment.
  • the cell sends a contention resolution message to the user equipment, including:
  • the cell sends a contention resolution message to the user equipment by using a resource pool corresponding to the second resource information broadcasted by the cell, or is scheduled by CB-RNTI. a resource, sending a contention resolution message to the user equipment;
  • the PDCCH that is addressed by the cell through C-RNTI The scheduled PDSCH resource sends a contention resolution message to the user equipment.
  • the cell broadcasts the second resource information, including:
  • the cell broadcasts the second resource information by using an SIB
  • the SIB is a new SIB different from the SIB in the current 3GPP TS 36.331 or an SIB obtained by extending the SIB in the 3GPP TS 36.331.
  • the user equipment that needs to perform handover acquires the second resource information by using the source cell.
  • the user equipment accesses the target cell by using the uplink transmission dedicated resource.
  • the user equipment obtains the second resource information by using the source cell, including:
  • the user equipment acquires the second resource information by using an RRC reconfiguration message sent by the source cell;
  • the user equipment accessing the target cell by using the uplink transmission dedicated resource includes:
  • the user equipment sends an RRC reconfiguration complete message to the target cell by using the uplink transmission dedicated resource.
  • the target cell allocates uplink transmission dedicated resources for the user equipment that needs to be switched;
  • Notifying the source cell of the allocated uplink dedicated resource to the target cell so that the source cell notifies the user equipment of the uplink transmission dedicated resource, and the user equipment is connected by using the uplink transmission dedicated resource. Enter the target cell.
  • the method further includes:
  • the target cell receives a handover request message from the source cell.
  • the target cell notifies the source cell of the allocated uplink dedicated resource, including:
  • the target cell notifies the source cell of the allocated second resource information corresponding to the uplink transmission dedicated resource by using the X2 interface.
  • the target cell notifies the source cell of the allocated uplink dedicated resource, including:
  • the target cell notifies the source cell of the allocated uplink transmission dedicated resource by using a handover request acknowledgement message.
  • the method further includes:
  • the target cell After receiving the RRC reconfiguration complete message sent by the user equipment, the target cell notifies the user equipment of the uplink TA in the target cell by using the PDCCH based on the UE C-RNTI addressing.
  • the source cell After the user equipment needs to perform handover, the source cell sends a handover request message to the target cell.
  • the source cell allocates, by the target cell, the uplink transmission dedicated resource notification to the user equipment, so that the user equipment accesses the target cell by using the uplink transmission dedicated resource.
  • the source cell allocates, by the target cell, the uplink transmission dedicated resource notification to the user equipment, including:
  • the source cell notifies the user equipment of the uplink transmission dedicated resource by using the RRC reconfiguration message that includes the mobility control information.
  • a user equipment for performing random access according to an embodiment of the present invention where the user equipment includes:
  • a first determining module configured to determine a random access dedicated contention resource pool when accessing the cell
  • a first sending module configured to send user equipment identification information to the cell by using a resource in a random access dedicated contention resource pool
  • the first access module is configured to determine, according to the contention resolution message, whether the random access is successful, if the contention resolution message from the cell is received.
  • the first determining module is specifically configured to:
  • the first determining module is specifically configured to:
  • the first sending module is specifically configured to:
  • the user equipment identity information is sent to the cell through the resources in the random access dedicated contention resource pool based on the downlink timing of the cell.
  • the random access destination is user equipment initial access or RRC connection reestablishment
  • the user equipment identification information is a CCCH SDU
  • the user equipment identification information is a C-RNTI MAC CE.
  • the first access module is specifically configured to:
  • the CCCH SDU included in the contention resolution message is a CCCH SDU sent to the cell, determining that the random access is successful; otherwise, determining that the random access fails;
  • the contention resolution message includes a PDCCH that is addressed based on the C-RNTI MAC CE sent to the cell, determining that the random access is successful; otherwise, determining that the random access fails.
  • the first sending module is specifically configured to:
  • the BSR information and/or the part to be transmitted or All data After the cell is accessed, after determining the random access dedicated contention resource pool, if the determined capacity of the random access dedicated contention resource pool is greater than the first threshold, the BSR information and/or the part to be transmitted or All data.
  • the first access module is specifically configured to:
  • the contention resolution message is received by the PDSCH resource scheduled by the C-RNTI addressed PDCCH.
  • the first access module is further configured to:
  • the router waits for a period of time to trigger the first determining module to reselect the random access dedicated contention pool and initiate random access again.
  • a network side device that performs random access according to an embodiment of the present invention, where the network side device includes:
  • a broadcast module configured to broadcast first resource information used to determine a random access dedicated contention resource pool
  • a first receiving module configured to receive user equipment identification information that is sent by a user equipment that needs to access a cell managed by the network side device by using a random access dedicated contention resource pool corresponding to the random access dedicated contention pool information;
  • the first transmission module is configured to send a contention resolution message to the user equipment after receiving the user equipment identification information.
  • the broadcast module is specifically configured to:
  • the SIB is a new SIB different from the SIB in the current 3GPP TS 36.331 or an SIB obtained by extending the SIB in the 3GPP TS 36.331.
  • the first receiving module is further configured to:
  • the user equipment After receiving the user equipment identification information, if the user equipment is an initial access or an RRC connection establishment, the user equipment is allocated a C-RNTI.
  • the first receiving module is further configured to:
  • the user equipment After receiving the user equipment identification information, if the cell radius is greater than a second threshold, the user equipment is configured with an uplink TA available in the cell.
  • the contention resolution message includes user equipment identification information
  • the contention resolution message is PDCCH scheduling information including an initial UL grant for a C-RNTI of the user equipment.
  • the first transmission module is specifically configured to:
  • the content pool corresponding to the second resource information broadcasted by the cell is sent to the user equipment, or the resource scheduled by the CB-RNTI is used. Sending a contention resolution message to the user equipment;
  • the contention request message is sent to the user equipment by using the PDSCH resource scheduled by the PDCCH that is addressed by the C-RNTI.
  • the broadcast module is specifically configured to:
  • the SIB is a new SIB different from the SIB in the current 3GPP TS 36.331 or an SIB obtained by extending the SIB in the 3GPP TS 36.331.
  • Another user equipment for performing random access includes:
  • An acquiring module configured to acquire second resource information by using a source cell when the handover needs to be performed
  • a second determining module configured to determine, according to the second resource information, an uplink transmission dedicated resource allocated by the target cell to the user equipment;
  • a second access module configured to access the target cell by using the uplink transmission dedicated resource.
  • the obtaining module is specifically configured to:
  • the second access module is specifically configured to:
  • a target network side device that performs random access according to an embodiment of the present invention, where the target network side device includes:
  • An allocating module configured to allocate an uplink transmission dedicated resource to the user equipment that needs to be switched
  • a second transmission module configured to notify the source cell of the allocated uplink transmission dedicated resource, so that the source cell notifies the user equipment of the uplink transmission dedicated resource, and enables the user equipment to pass the uplink transmission A dedicated resource accesses the target cell.
  • the allocation module is specifically configured to:
  • the uplink transmission dedicated resource is allocated to the user equipment that needs to be handed over.
  • the second transmission module is specifically configured to:
  • the second resource information corresponding to the allocated uplink transmission dedicated resource is notified to the source cell through the X2 interface.
  • the second transmission module is specifically configured to:
  • the allocated uplink transmission dedicated resource is notified to the source cell by switching the request acknowledgement message.
  • the second transmission module is further configured to:
  • the user equipment After the RRC reconfiguration complete message sent by the user equipment is received, after the RRC reconfiguration complete message sent by the user equipment is received, the user equipment is in the target cell by using a PDCCH based on the UE C-RNTI addressing.
  • the uplink TA notifies the user equipment.
  • a source network side device that performs random access according to an embodiment of the present invention, where the source network side device includes:
  • a third transmission module configured to send a handover request message to the target cell after the user equipment needs to perform handover
  • a fourth transmission module configured to allocate, by the target cell, the uplink transmission dedicated resource to the user equipment, to enable the user equipment to access the target cell by using the uplink transmission dedicated resource.
  • the fourth transmission module is specifically configured to:
  • the target cell Assigning, by the target cell, the uplink transmission to the user equipment by using an RRC reconfiguration message including mobility control information
  • the dedicated resource is notified to the user equipment.
  • the user equipment sends the user equipment identification information to the cell through the resource in the random access dedicated contention resource pool; if the user equipment receives the contention resolution message from the cell, the user equipment is resolved according to the competition. The message determines whether the random access is successful.
  • the user equipment determines, according to the second resource information, an uplink transmission dedicated resource allocated by the target cell to the user equipment, and accesses the target cell by using the uplink transmission dedicated resource. Since the random access interaction process can be reduced, the delay of the random access can be reduced, and the solution can be applied in a scenario where the delay requirement is strict.
  • FIG. 1 is a schematic structural diagram of a system for performing random access according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a first user equipment according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a first network side device according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a second user equipment according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a second network side device according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart of a method for performing random access according to an embodiment of the present invention.
  • FIG. 7 is a schematic flowchart of a method for performing random access according to a second embodiment of the present invention.
  • FIG. 8 is a schematic flowchart of a method for performing initial access or RRC connection reestablishment according to an embodiment of the present invention
  • FIG. 9 is a schematic flowchart of a method for performing random access to obtain UL synchronization according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a second system for performing random access according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a third user equipment according to an embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of a third network side device according to an embodiment of the present invention.
  • FIG. 13 is a schematic structural diagram of a fourth network side device according to an embodiment of the present invention.
  • FIG. 14 is a schematic structural diagram of a fourth user equipment according to an embodiment of the present invention.
  • FIG. 15 is a schematic structural diagram of a fifth network side device according to an embodiment of the present invention.
  • FIG. 16 is a schematic structural diagram of a sixth network side device according to an embodiment of the present invention.
  • 17 is a schematic flowchart of a third method for performing random access according to an embodiment of the present invention.
  • FIG. 18 is a schematic flowchart of a method for performing random access according to a fourth embodiment of the present invention.
  • FIG. 19 is a schematic flowchart of a method for performing random access according to a fifth embodiment of the present invention.
  • FIG. 20 is a schematic flowchart of a method for non-contention random access according to an embodiment of the present invention.
  • the user equipment sends the user equipment identification information to the cell by using the resources in the random competition dedicated resource pool; if the user equipment receives the contention resolution message from the cell, according to the contention resolution message. Determine if the random access is successful.
  • the user equipment determines, according to the second resource information, the uplink transmission dedicated resource allocated by the target cell to the user equipment, and accesses the target cell by using the uplink transmission dedicated resource. Since the random access interaction process can be reduced, the delay of the random access can be reduced, and the solution can be applied in a scenario where the delay requirement is strict.
  • the embodiments of the present invention propose two schemes for random access, namely, a contention random access scheme and a non-contention random access scheme.
  • the system for performing random access in the first embodiment of the present invention includes: a user equipment 10 and a network side device 20 that manages a cell.
  • the user equipment 10 is configured to: when accessing the cell, determine a random access dedicated contention resource pool; send the user equipment identity information to the cell by using the resource in the random access dedicated contention resource pool; receive the contention resolution message from the cell, according to The contention resolution message determines whether the random access is successful.
  • the network side device 20 is configured to broadcast the first resource information used to determine the random access dedicated contention resource pool; and to receive the access network side device by using the random access dedicated contention resource pool corresponding to the random access dedicated contention pool information User equipment identification information sent by the user equipment of the managed cell; after receiving the user equipment identification information, the contention resolution message is sent to the user equipment.
  • the network device If the network device receives the user equipment identification information, it determines that the corresponding user equipment competes successfully, and sends a contention resolution message to the corresponding user equipment.
  • the user equipment receives the contention resolution message, it determines that the random access is successful.
  • the network side device broadcasts at least one piece of first resource information corresponding to a random access dedicated contention resource pool in the managed cell, and when the UE accesses the cell, first reads the broadcast message, acquires the first resource information, and then utilizes The resource in the random access dedicated contention resource pool corresponding to the first resource information transmits the UE identity information. Once the network side device successfully receives the UE identity information, it confirms that the UE competes successfully and sends a contention resolution message to the UE.
  • the first resource information is broadcast by the SIB;
  • the SIB is a new SIB different from the SIB in the current 3GPP TS 36.331 or a system information broadcast extended by the SIB in the 3rd Generation Partnership Project (3GPP) Technical Specification (TS) 36.331. (System Information Broadcast, SIB).
  • the first resource information may include but is not limited to some or all of the following information:
  • the time-frequency location corresponding to the random access dedicated content pool, the Modulation and Coding Scheme (MCS) level, and the priority.
  • MCS Modulation and Coding Scheme
  • the user equipment may determine a random access dedicated competition resource pool according to the time-frequency location.
  • the user equipment may determine a corresponding random access dedicated contention resource pool according to each time-frequency location.
  • the user equipment can determine the modulation and coding mode used by the user equipment identity transmission according to the MCS level.
  • the user equipment may select a random access dedicated contention resource pool with a higher priority according to the priority corresponding to each random access dedicated contention pool.
  • the user equipment may send the user equipment identification information to the cell by using the resources in the random access dedicated contention resource pool based on the downlink timing of the cell. That is to say, according to the downlink receiving moment of the cell, the user equipment identification information is sent to the cell through the resources in the random access dedicated contention resource pool.
  • the user equipment identifier of the embodiment of the present invention may be:
  • the user equipment identification information is a Common Control Channel (CCCH) Service Data Units (SDUs). ; can also be other information that can identify the user device.
  • CCCH Common Control Channel
  • SDUs Service Data Units
  • the user equipment identification information is a Cell Radio Network Temporary Identifier (C-RNTI) medium access layer control unit (MAC CE); Other information that identifies the user device.
  • C-RNTI Cell Radio Network Temporary Identifier
  • MAC CE medium access layer control unit
  • the user equipment determines, according to the contention resolution message, whether the random access is successful:
  • the CCCH SDU included in the contention resolution message is a CCCH SDU sent to the cell, determining that the random access is successful; otherwise, determining that the random access fails;
  • the contention resolution message includes a physical downlink control channel (PDCCH) based on the C-RNTI MAC CE address sent to the cell, it is determined that the random access is successful; otherwise, the random access failure is determined.
  • PDCCH physical downlink control channel
  • the user equipment may randomly wait for a period of time, reselect the random access dedicated contention resource pool, and initiate random access again.
  • the number of random access attempts may be set. Before the number of attempts is reached, the random access is unsuccessful, and the retry is repeated; if the number of times is exceeded, the random access is stopped.
  • the user equipment sends a Buffer Status Report (BSR) information to the cell and/or part or all of the required transmission. data.
  • BSR Buffer Status Report
  • the first threshold here can be determined based on experience, simulation, demand, and the like.
  • the network side device may also allocate the C-RNTI to the user equipment after determining that the user equipment competes successfully.
  • the network side device may allocate the C-RNTI to the user equipment by using a contention resolution message; or may allocate the C-RNTI to the user equipment by using other messages.
  • the network side device may further configure an uplink TA available in the cell for the user equipment after determining that the user equipment is successfully contending.
  • the second threshold here can be determined based on experience, simulation, demand, and the like.
  • the second threshold can be set to a Timing Alignment (TA) adjustment step size.
  • TA Timing Alignment
  • the network side device may allocate the TA to the user equipment by using a contention resolution message; or may allocate the TA to the user equipment by using other messages.
  • the network side device may place the received user equipment identification information in the contention resolution message.
  • the network side device may also place the C-RNTI and/or the TA allocated to the user equipment in a contention resolution message.
  • the network side device sends a contention resolution message to the user equipment by using a physical downlink shared channel (PDSCH) resource scheduled by the C-RNTI-addressed PDCCH.
  • PDSCH physical downlink shared channel
  • the network side device may also place the TA allocated to the user equipment in a contention resolution message.
  • the network side device sends a contention resolution message to the user equipment:
  • the cell sends a contention resolution message to the user equipment through the resource pool corresponding to the second resource information broadcasted by the cell, or passes the contending wireless network temporary identifier (CB-RNTI). a scheduled resource, sending a contention resolution message to the user equipment;
  • CB-RNTI contending wireless network temporary identifier
  • the user equipment receives the contention resolution message through the resource pool corresponding to the second resource information broadcasted by the cell, or receives the contention resolution message by using the resource scheduled by the CB-RNTI.
  • the second resource information is broadcast by using the SIB.
  • the SIB is a new SIB different from the SIB in the current 3GPP TS 36.331 or an SIB obtained by extending the SIB in the 3GPP TS 36.331.
  • the cell sends a contention resolution message to the user equipment by using the PDSCH resource scheduled by the C-RNTI-addressed PDCCH;
  • the user equipment receives the contention resolution message by using the PDCCH scheduled PDSCH resource addressed by the C-RNTI.
  • the network side device may configure a contention resolution time window for the user equipment by using broadcast or dedicated signaling (the dedicated signaling is applied to the case where the user equipment has established an RRC connection);
  • the user equipment receives the contention resolution message within the contention time window, if it receives, it considers the competition Fight for success;
  • the router randomly waits for a period of time, reselects the random access dedicated contention pool, and initiates random access again.
  • the first user equipment of the embodiment of the present invention includes:
  • the first determining module 200 is configured to determine, when accessing the cell, a random access dedicated content pool
  • the first sending module 201 is configured to send user equipment identification information to the cell by using resources in the random access dedicated contention pool;
  • the first access module 202 is configured to determine, according to the contention resolution message, whether the random access is successful, if the contention resolution message from the cell is received.
  • the first determining module 200 is specifically configured to:
  • the first determining module 200 is specifically configured to:
  • the first sending module 201 is specifically configured to:
  • the user equipment identification information is sent to the cell through the resources in the random access dedicated contention resource pool.
  • the user equipment identification information is a CCCH SDU
  • the user equipment identity information is C-RNTI MAC CE.
  • the first access module 202 is specifically configured to:
  • the CCCH SDU included in the contention resolution message is a CCCH SDU sent to the cell, determining that the random access is successful; otherwise, determining that the random access fails;
  • the contention resolution message includes a PDCCH addressed based on the C-RNTI MAC CE sent to the cell, it is determined that the random access is successful; otherwise, the random access failure is determined.
  • the first sending module 201 is specifically configured to:
  • the BSR information and/or some or all data to be transmitted are sent to the cell. .
  • the first access module 202 is specifically configured to:
  • the resource pool corresponding to the second resource information broadcasted by the cell receives the contention resolution message, or receives the contention resolution message by using the CB-RNTI resource;
  • the PDSCH resource scheduled by the PDCCH that is addressed by the C-RNTI receives the contention resolution message.
  • the first access module 202 is further configured to:
  • the device waits for a period of time to trigger the first determining module to reselect the random access dedicated contention pool and initiate random access again.
  • the first network side device of the embodiment of the present invention includes:
  • the broadcast module 300 is configured to broadcast first resource information used to determine a random access dedicated contention resource pool
  • the first receiving module 301 is configured to receive, by using a random access dedicated contention resource pool corresponding to the random access dedicated contention pool information, user equipment identification information that is sent by the user equipment that needs to access the cell managed by the network side device;
  • the first transmission module 302 is configured to send a contention resolution message to the user equipment after receiving the user equipment identification information.
  • the broadcast module 300 is specifically configured to:
  • the SIB is a new SIB different from the SIB in the current 3GPP TS 36.331 or an SIB obtained by extending the SIB in the 3GPP TS 36.331.
  • the first receiving module 301 is further configured to:
  • the C-RNTI is allocated to the user equipment.
  • the first receiving module 301 is further configured to:
  • the user equipment After receiving the user equipment identification information, if the cell radius is greater than the second threshold, the user equipment is configured with an uplink TA available in the cell.
  • the contention resolution message includes user equipment identification information.
  • the contention resolution message is the PDCCH scheduling information including the initial uplink scheduling (UL grant) of the C-RNTI of the user equipment.
  • the first transmission module 302 is specifically configured to:
  • the resource pool corresponding to the second resource information broadcasted by the cell sends a contention resolution message to the user equipment, or sends the resource scheduled by the CB-RNTI to the user equipment.
  • the PDSCH resource scheduled by the PDCCH that is addressed by the C-RNTI sends a contention resolution message to the user equipment.
  • the broadcast module 300 is specifically configured to:
  • the SIB is a new SIB different from the SIB in the current 3GPP TS 36.331 or an SIB obtained by extending the SIB in the 3GPP TS 36.331.
  • the second user equipment of the embodiment of the present invention includes:
  • the processor 401 is configured to read a program in the memory 404 and perform the following process:
  • the transceiver 402 When accessing the cell, determining a random access dedicated contention resource pool; using the transceiver 402 to send the user equipment identification information to the cell through the resource in the random access dedicated contention resource pool; if receiving the contention resolution message from the cell, using the transceiver The machine 402 determines whether the random access is successful according to the contention resolution message.
  • the transceiver 402 is configured to receive and transmit data under the control of the processor 401.
  • the processor 401 is specifically configured to:
  • the processor 401 is specifically configured to:
  • the processor 401 is specifically configured to:
  • the user equipment identification information is sent to the cell through the resources in the random access dedicated contention resource pool.
  • the user equipment identification information is a CCCH SDU
  • the user equipment identity information is C-RNTI MAC CE.
  • the processor 401 is specifically configured to:
  • the CCCH SDU included in the contention resolution message is a CCCH SDU sent to the cell, determining that the random access is successful; otherwise, determining that the random access fails;
  • the contention resolution message includes a PDCCH addressed based on the C-RNTI MAC CE sent to the cell, it is determined that the random access is successful; otherwise, the random access failure is determined.
  • the processor 401 is specifically configured to:
  • the BSR information and/or some or all data to be transmitted are sent to the cell. .
  • the processor 401 is specifically configured to:
  • the resource pool corresponding to the second resource information broadcasted by the cell receives the contention resolution message, or receives the contention resolution message by using the CB-RNTI resource;
  • the PDSCH resource scheduled by the PDCCH that is addressed by the C-RNTI receives the contention resolution message.
  • the processor 401 is further configured to:
  • the device waits for a period of time to trigger the first determining module to reselect the random access dedicated contention pool and initiate random access again.
  • bus 400 can include any number of interconnected totals. Lines and bridges, bus 400 will link together various circuits including one or more processors represented by general purpose processor 401 and memory represented by memory 404. The bus 400 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art and, therefore, will not be further described herein.
  • Bus interface 403 provides an interface between bus 400 and transceiver 402.
  • Transceiver 402 can be an element or a plurality of elements, such as a plurality of receivers and transmitters, providing means for communicating with various other devices on a transmission medium. For example, transceiver 402 receives external data from other devices. The transceiver 402 is configured to send the processed data of the processor 401 to other devices.
  • a user interface 405 can also be provided, such as a keypad, display, speaker, microphone, joystick.
  • the processor 401 is responsible for managing the bus 400 and the usual processing, as described above for running a general purpose operating system.
  • the memory 404 can be used to store data used by the processor 401 in performing operations.
  • the processor 401 can be a central buried device (CPU), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device ( Complex Programmable Logic Device, CPLD).
  • CPU central buried device
  • ASIC application specific integrated circuit
  • FPGA field-programmable gate array
  • CPLD complex programmable logic device
  • the second network side device of the embodiment of the present invention includes:
  • the processor 501 is configured to read a program in the memory 504 and perform the following process:
  • the first resource information for determining the random access dedicated contention resource pool is broadcasted by the transceiver 502; the random access dedicated contention resource pool corresponding to the random access dedicated contention pool information is received by the transceiver 502 to receive the access network side.
  • the transceiver 502 is configured to receive and transmit data under the control of the processor 501.
  • the processor 501 is specifically configured to:
  • the SIB is a new SIB different from the SIB in the current 3GPP TS 36.331 or an SIB obtained by extending the SIB in the 3GPP TS 36.331.
  • processor 501 is further configured to:
  • the C-RNTI is allocated to the user equipment.
  • processor 501 is further configured to:
  • the user equipment After receiving the user equipment identification information, if the cell radius is greater than the second threshold, the user equipment is configured with an uplink TA available in the cell.
  • the contention resolution message includes user equipment identification information.
  • the contention resolution message is C-RNTI for the user equipment.
  • the PDCCH scheduling information including the initial UL grant.
  • the processor 501 is specifically configured to:
  • the resource pool corresponding to the second resource information broadcasted by the cell sends a contention resolution message to the user equipment, or sends the resource scheduled by the CB-RNTI to the user equipment.
  • the PDSCH resource scheduled by the PDCCH that is addressed by the C-RNTI sends a contention resolution message to the user equipment.
  • the processor 501 is specifically configured to:
  • the SIB is a new SIB different from the SIB in the current 3GPP TS 36.331 or an SIB obtained by extending the SIB in the 3GPP TS 36.331.
  • bus 500 can include any number of interconnected buses and bridges, and bus 500 will include one or more processors represented by processor 501 and memory represented by memory 504. The various circuits are linked together. The bus 500 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art, and therefore, will not be further described herein.
  • Bus interface 503 provides an interface between bus 500 and transceiver 502. Transceiver 502 can be an element or a plurality of elements, such as multiple receivers and transmitters, providing means for communicating with various other devices on a transmission medium. Data processed by processor 501 is transmitted over wireless medium via antenna 505. Further, antenna 505 also receives the data and transmits the data to processor 501.
  • the processor 501 is responsible for managing the bus 500 and the usual processing, and can also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions.
  • the memory 504 can be used to store data used by the processor 501 when performing operations.
  • the processor 501 can be a CPU, an ASIC, an FPGA, or a CPLD.
  • a method for performing random access is also provided in the embodiment of the present invention.
  • the device corresponding to the method is a device in a system for performing random access according to an embodiment of the present invention, and the method solves the problem. Similar to the system, so the implementation of the method can refer to the implementation of the device, and the repeated description will not be repeated.
  • the first method for performing random access includes:
  • Step 601 When the user equipment accesses the cell, determine a random access dedicated content pool
  • Step 602 The user equipment sends the user equipment identification information to the cell by using the resources in the dedicated contention pool.
  • Step 603 If the user equipment receives the contention resolution message from the cell, determine, according to the contention resolution message, whether the random access is successful.
  • the user equipment determines a random access dedicated contention resource pool, including:
  • the user equipment determines, according to the first resource information broadcasted by the cell, a random access dedicated content pool.
  • the user equipment determines, according to the first resource information broadcasted by the cell, the random access dedicated contention resource pool, including:
  • the user equipment determines a plurality of random access dedicated contention resource pools according to the first resource information broadcasted by the cell, and selects a random access dedicated contention resource pool from the plurality of random access dedicated contention resource pools.
  • the user equipment sends the user equipment identification information to the cell by using the resources in the dedicated contention pool, including:
  • the user equipment sends the user equipment identification information to the cell by using the resources in the dedicated contention pool of the random access based on the downlink timing of the cell.
  • the user equipment identification information is a CCCH SDU
  • the user equipment identity information is C-RNTI MAC CE.
  • the user equipment determines, according to the contention resolution message, whether the random access is successful, including:
  • the CCCH SDU included in the contention resolution message is a CCCH SDU sent to the cell, determining that the random access is successful; otherwise, determining that the random access fails;
  • the contention resolution message includes a PDCCH addressed based on the C-RNTI MAC CE sent to the cell, it is determined that the random access is successful; otherwise, the random access failure is determined.
  • the user equipment after determining, by the user equipment, the random access dedicated contention resource pool, the user equipment further includes:
  • the user equipment sends the BSR information and/or part or all of the data that needs to be transmitted to the cell.
  • the user equipment receives the contention resolution message, including:
  • the user equipment receives the contention resolution message through the resource pool corresponding to the second resource information broadcasted by the cell, or receives the contention resolution message by using the CB-RNTI scheduled resource;
  • the user equipment receives the contention resolution message through the PDSCH resource scheduled by the C-RNTI-addressed PDCCH.
  • the method further includes:
  • the user randomly waits for a period of time, reselects the random access dedicated contention pool, and initiates random access again.
  • the execution subject cell of the method is equivalent to the network side device of the management cell.
  • the second method for performing random access in the embodiment of the present invention includes:
  • Step 701 The cell broadcast is used to determine first resource information of a random access dedicated content pool
  • Step 702 The cell accesses a random access dedicated content resource pool corresponding to the random access dedicated contention pool information. Receiving user equipment identification information sent by the user equipment that needs to access the cell;
  • Step 703 After receiving the user equipment identification information, the cell sends a contention resolution message to the user equipment.
  • the user equipment determines, according to the contention resolution message, whether the random access is successful, including:
  • the CCCH SDU included in the contention resolution message is a CCCH SDU sent to the cell, determining that the random access is successful; otherwise, determining that the random access fails;
  • the contention resolution message includes a PDCCH addressed based on the C-RNTI MAC CE sent to the cell, it is determined that the random access is successful; otherwise, the random access failure is determined.
  • the cell further includes:
  • the cell allocates a C-RNTI to the user equipment.
  • the cell further includes:
  • the cell configures the uplink TA available in the cell for the user equipment.
  • the contention resolution message includes user equipment identification information.
  • the contention resolution message is PDCCH scheduling information including the initial UL grant for the C-RNTI of the user equipment.
  • the cell sends a contention resolution message to the user equipment, including:
  • the cell sends a contention resolution message to the user equipment, or the resource scheduled by the CB-RNTI, to the user equipment, through the resource pool corresponding to the second resource information broadcasted by the cell. Send a contention resolution message;
  • the cell sends a contention resolution message to the user equipment by using the PDSCH resource scheduled by the C-RNTI-addressed PDCCH.
  • the cell broadcast is used to determine the first resource information of the random access dedicated contention resource pool, including:
  • the cell broadcasts the first resource information through the SIB;
  • the SIB is a new SIB different from the SIB in the current 3GPP TS 36.331 or an SIB obtained by extending the SIB in the 3GPP TS 36.331.
  • Embodiment 1 The UE performs initial access or RRC connection reestablishment (contention random access).
  • the purpose of the UE performing random access on the cell is to obtain a C-RNTI and establish/reestablish an RRC connection.
  • the method for performing initial access or RRC connection reestablishment in the embodiment of the present invention includes:
  • Step 1 The cell 1 is used to determine the resource information of the random access dedicated contention resource pool by using the system information broadcast.
  • the resource information may include a time-frequency location corresponding to a random access dedicated contention pool, an allowed MCS level, a priority corresponding to the random access dedicated contention pool, and the like.
  • Step 2 The UE that is to access the cell 1 reads the broadcast message and obtains resource information (such as a time-frequency location, MCS). Wait). If multiple resource pools are configured, the UE may also perform random access competition resource pool selection according to the corresponding priority. Then, the UE sends the UE identity information by using the selected random access dedicated contention resource pool based on the downlink timing of the cell to initiate random access.
  • resource information such as a time-frequency location, MCS. Wait.
  • resource information such as a time-frequency location, MCS. Wait.
  • the UE may also perform random access competition resource pool selection according to the corresponding priority. Then, the UE sends the UE identity information by using the selected random access dedicated contention resource pool based on the downlink timing of the cell to initiate random access.
  • the UE identifier information may be a CCCH SDU or other forms of UE identifier information.
  • the content carried by the CCCH SDU varies according to the purpose of random access. For example, if the access destination is the initial access, it carries the RRC connection setup request message; if the access destination is the RRC connection reestablishment, it carries the RRC connection reestablishment request message.
  • the UE may also carry the BSR information and/or all or part of the data to be transmitted while transmitting the UE identity information.
  • Step 3 The cell 1 performs a contention decision, that is, if the cell 1 receives the UE identity information sent by the UE in step 2, it determines that the UE is successfully competitive.
  • the cell 1 For initial access and RRC connection reestablishment, after determining that the UE has successfully competed, the cell 1 needs to allocate a C-RNTI to the UE.
  • the cell may determine the TA of the UE after determining that the UE has successfully competed.
  • Step 4 Cell 1 sends a contention resolution message to the UE.
  • the contention resolution message may include UE identification information that the UE transmits in step 2 through the random access dedicated contention resource.
  • the resource for the contention resolution message transmission is the transmission resource corresponding to the second resource message broadcast by the cell.
  • Opt2 Introduces CB-RNTI, and the cell uses CB-RNTI to schedule contention for message transmission.
  • the UE monitors the contention of the message transmission pool according to the random access specific contention of the cell broadcast or the resource location of the CB-RNTI scheduled contention resolution message in the time window configured by the base station, and after receiving the contention resolution message, If the UE identification information is included, the competition is considered successful. If the time window is exceeded, it is judged that the competition fails, and the random access attempt is performed again according to steps 2-4.
  • Embodiment 2 The UE performs random access to obtain UL synchronization (contention random access).
  • the purpose of the UE performing random access on the cell is to obtain UL synchronization. This scenario is applicable to the case where the UE has uplink data to be transmitted but the UL is out of synchronization.
  • the method for performing random access to obtain UL synchronization includes:
  • Step 1 The cell 1 is used to determine the resource information of the random access dedicated contention resource pool by using the system information broadcast.
  • the resource information may include a time-frequency location corresponding to a random access dedicated contention pool, an allowed MCS level, a priority corresponding to the random access dedicated contention pool, and the like.
  • Step 2 The UE that is to access the cell 1 reads the broadcast message and obtains resource information (such as a time-frequency location, an MCS, etc.). If multiple resource pools are configured, the UE may also perform random access competition resource pool selection according to the corresponding priority. Then, the UE utilizes the selected random access dedicated contention resource pool based on the downlink timing of the cell to initiate random access. Send UE identification information.
  • resource information such as a time-frequency location, an MCS, etc.
  • the UE identifier information may be a C-RNTI MAC CE or other forms of UE identifier information.
  • the UE may also carry the BSR information and/or all or part of the data to be transmitted while transmitting the UE identity information.
  • Step 3 The cell 1 performs a contention decision, that is, if the cell 1 receives the UE identity information sent by the UE in step 2, it determines that the UE has successfully competed.
  • Step 4 Cell 1 sends a contention resolution message to the UE.
  • the contention resolution message may be PDCCH scheduling information including the initial UL grant for the UE C-RNTI.
  • the contention resolution message is scheduled by the C-RNTI addressed PDCCH, so the transmission resource can be any PDSCH resource.
  • the cell 1 may send the uplink TA that is available to the UE in the contention resolution message to the UE, or may use the C-RNTI to send the uplink TA to the UE.
  • the second system for performing random access in the embodiment of the present invention includes: a user equipment 1000, a target network side device 1010, and a source network side device 1020.
  • the user equipment 1000 is configured to: when the handover needs to be performed, acquire the second resource information by using the source network side device of the management source cell; and determine, according to the second resource information, the uplink transmission dedicated resource allocated by the target network side device of the management target cell to the user equipment. Accessing the target cell through the uplink transmission dedicated resource.
  • the target network side device 1010 is configured to allocate an uplink transmission dedicated resource to the user equipment that needs to be handed over; and notify the source cell of the allocated uplink transmission dedicated resource;
  • the source network side device 1020 is configured to send a handover request message to the target cell after the user equipment needs to perform the handover, and notify the target device to allocate the uplink transmission dedicated resource to the user equipment.
  • the target network side device receives the handover request cancellation from the source cell, the user equipment that needs to be handed over allocates the uplink transmission dedicated resource.
  • the target network side device notifies the source cell of the second resource information corresponding to the allocated uplink transmission dedicated resource through the X2 interface;
  • the target network side device may send the second resource information corresponding to the allocated uplink transmission dedicated resource to the handover request acknowledgement message, and send the information to the source cell.
  • the source network side device notifies the user equipment that the target cell allocates the second resource information corresponding to the uplink transmission dedicated resource to the user equipment.
  • the source cell is a user equipment by using an RRC reconfiguration message that includes mobility control information.
  • the uplink transmission dedicated resource notification is allocated to the user equipment.
  • the user equipment obtains the second resource information by using the RRC reconfiguration message sent by the source cell.
  • the user equipment After acquiring the second resource information, the user equipment determines the uplink transmission dedicated resource according to the second resource information, and sends an RRC reconfiguration complete message to the target cell by using the uplink transmission dedicated resource.
  • the target network side device may further configure, for the user equipment, an uplink TA that is available in the cell.
  • the second threshold here can be determined based on experience, simulation, demand, and the like.
  • the second threshold can be set to the size of a TA adjustment step.
  • a TA adjustment step is 78m.
  • the target cell after receiving the RRC reconfiguration complete message sent by the user equipment, notifies the user equipment of the uplink TA of the user equipment in the target cell by using the PDCCH based on the UE C-RNTI addressing.
  • the target cell and the source cell are simultaneously managed by one network side device. Therefore, the target network side device and the source network side device in the embodiment of the present invention may also be the same network side device.
  • the third user equipment of the embodiment of the present invention includes:
  • the obtaining module 1100 is configured to acquire second resource information by using the source cell when the handover needs to be performed;
  • the second determining module 1110 is configured to determine, according to the second resource information, an uplink transmission dedicated resource allocated by the target cell to the user equipment;
  • the second access module 1120 is configured to access the target cell by using an uplink transmission dedicated resource.
  • the obtaining module 1100 is specifically configured to:
  • the second access module 1120 is specifically configured to:
  • the RRC reconfiguration complete message is sent to the target cell by using the uplink transmission dedicated resource.
  • the user equipment of FIG. 2 and the user equipment of FIG. 11 can be combined into one user equipment, because the user equipment may perform contention random access in different scenarios, and non-contention random access may also be performed.
  • the third network side device of the embodiment of the present invention includes:
  • the allocating module 1200 is configured to allocate an uplink transmission dedicated resource to the user equipment that needs to be switched;
  • the second transmission module 1210 is configured to notify the source cell of the allocated uplink transmission dedicated resource, so that the source cell notifies the user equipment of the uplink transmission dedicated resource, and enables the user equipment to access the target cell by using the uplink transmission dedicated resource.
  • the allocation module 1200 is specifically configured to:
  • the second transmission module 1210 is specifically configured to:
  • the second resource information corresponding to the allocated uplink transmission dedicated resource is notified to the source cell through the X2 interface.
  • the second transmission module 1210 is specifically configured to:
  • the source device is notified of the allocated uplink transmission dedicated resource by switching the request acknowledgement message.
  • the second transmission module 1210 is further configured to:
  • the user equipment After the RRC reconfiguration complete message sent by the user equipment is received, the user equipment is notified to the user equipment of the uplink TA in the target cell by using the PDCCH based on the UE C-RNTI addressing. .
  • the fourth network side device of the embodiment of the present invention includes:
  • the third transmission module 1300 is configured to send a handover request message to the target cell after the user equipment needs to perform handover;
  • the fourth transmission module 1310 is configured to notify the user equipment of the uplink transmission dedicated resource to the user equipment, so that the user equipment accesses the target cell by using the uplink transmission dedicated resource.
  • the fourth transmission module 1310 is specifically configured to:
  • the target cell allocates an uplink transmission dedicated resource notification to the user equipment by using the RRC reconfiguration message including the mobility control information.
  • the network side device in FIG. 12 and FIG. 13 in the embodiment of the present invention may be a network side device.
  • the network side device may be in a non-competitive manner for random access, and the network side device in FIG.
  • the network side devices are merged into one network side device; the network side device of FIG. 3 can be merged with the network side device of FIG. 13 into one network side device; the network side device of FIG. 3, the network side device of FIG. 12, and the network side of FIG.
  • the devices are combined into one network side device.
  • the fourth user equipment of the embodiment of the present invention includes:
  • the processor 1401 is configured to read a program in the memory 1404 and perform the following process:
  • the second resource information is acquired by the source cell by using the transceiver 1402 when the handover is needed; the uplink transmission dedicated resource allocated by the target cell to the user equipment is determined according to the second resource information; and the target cell is accessed by the transceiver 1402 by using the uplink transmission dedicated resource.
  • the transceiver 1402 is configured to receive and transmit data under the control of the processor 1401.
  • the processor 1401 is specifically configured to:
  • processor 1401 is specifically configured to:
  • the RRC reconfiguration complete message is sent to the target cell by using the uplink transmission dedicated resource.
  • bus 1400 can include any number of interconnected buses and bridges, and bus 1400 will include one or more processors and memory 1404 represented by general purpose processor 1401. The various circuits of the memory are linked together.
  • the bus 1400 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art, and therefore, will not be further described herein.
  • Bus interface 1403 provides an interface between bus 1400 and transceiver 1402.
  • Transceiver 1402 may be an element or a plurality of elements, such as multiple receivers and transmitters, providing means for communicating with various other devices on a transmission medium. For example, transceiver 1402 receives external data from other devices. The transceiver 1402 is configured to send the processed data of the processor 1401 to other devices.
  • a user interface 1405 can also be provided, such as a keypad, display, speaker, microphone, joystick.
  • the processor 1401 is responsible for managing the bus 1400 and the usual processing, such as running a general purpose operating system as previously described.
  • the memory 1404 can be used to store data used by the processor 1401 in performing operations.
  • the processor 1401 may be a CPU, an ASIC, an FPGA, or a CPLD.
  • the user equipment of FIG. 4 and the user equipment of FIG. 14 may be combined into one user equipment, because the user equipment may perform contention random access in different scenarios, and may also perform non-contention random access.
  • the fifth network side device of the embodiment of the present invention includes:
  • the processor 1501 is configured to read a program in the memory 1504 and perform the following process:
  • the transceiver 1502 is configured to receive and transmit data under the control of the processor 1501.
  • the processor 1501 is specifically configured to:
  • the uplink transmission dedicated resource is allocated to the user equipment that needs to be handed over.
  • the processor 1501 is specifically configured to:
  • the second resource information corresponding to the allocated uplink transmission dedicated resource is notified to the source cell through the X2 interface.
  • the processor 1501 is specifically configured to:
  • the source device is notified of the allocated uplink transmission dedicated resource by switching the request acknowledgement message.
  • the processor 1501 is further configured to:
  • the user equipment After the RRC reconfiguration complete message sent by the user equipment is received, the user equipment is notified to the user equipment of the uplink TA in the target cell by using the PDCCH based on the UE C-RNTI addressing. .
  • bus 1500 can include any number of interconnected buses and bridges, and bus 1500 will include one or more processors and memory 1504 represented by processor 1501.
  • the various circuits of the memory are linked together.
  • the bus 1500 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art and, therefore, will not be further described herein.
  • Bus interface 1503 provides an interface between bus 1500 and transceiver 1502.
  • Transceiver 1502 can be an element or a plurality of elements, such as multiple receivers and transmitters, providing means for communicating with various other devices on a transmission medium.
  • the data processed by the processor 1501 is transmitted over the wireless medium via the antenna 1505. Further, the antenna 1505 also receives the data and transmits the data to the processor 1501.
  • the processor 1501 is responsible for managing the bus 1500 and the usual processing, and can also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions.
  • the memory 1504 can be used to store data used by the processor 1501 when performing operations.
  • the processor 1501 may be a CPU, an ASIC, an FPGA, or a CPLD.
  • the sixth network side device of the embodiment of the present invention includes:
  • the processor 1601 is configured to read a program in the memory 1604 and perform the following process:
  • the transceiver 1602 After the user equipment needs to perform the handover, the transceiver 1602 sends a handover request message to the target cell.
  • the transceiver 1602 notifies the target cell to allocate the uplink transmission dedicated resource to the user equipment, so that the user equipment accesses the dedicated resource through the uplink transmission. Enter the target cell.
  • the transceiver 1602 is configured to receive and transmit data under the control of the processor 1601.
  • the processor 1601 is specifically configured to:
  • the target cell allocates an uplink transmission dedicated resource notification to the user equipment by using the RRC reconfiguration message including the mobility control information.
  • bus 1600 can include any number of interconnected buses and bridges, and bus 1600 will include one or more processors represented by processor 1601 and memory represented by memory 1604. The various circuits are linked together. Bus 1600 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art, and therefore, will not be further described herein.
  • Bus interface 1603 provides an interface between bus 1600 and transceiver 1602.
  • Transceiver 1602 can be an element or a plurality of elements, such as multiple receivers and transmitters, providing means for communicating with various other devices on a transmission medium. Data processed by processor 1601 is transmitted over wireless medium via antenna 1605. Further, antenna 1605 also receives data and transmits the data to processor 1601.
  • the processor 1601 is responsible for managing the bus 1600 and the usual processing, and can also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions.
  • the memory 1604 can be used to store data used by the processor 1601 in performing operations.
  • the processor 1601 may be a CPU, an ASIC, an FPGA, or a CPLD.
  • the network side device in FIG. 15 and FIG. 16 may be a network side device.
  • the network side device may be in a non-competitive manner for random access, and the network side device in FIG.
  • the network side devices are merged into one network side device; the network side device of FIG. 5 can be merged with the network side device of FIG. 16 into one network side device; the network side device of FIG. 5, the network side device of FIG. 15, and the network side of FIG.
  • the devices are combined into one network side device.
  • a method for performing random access is also provided in the embodiment of the present invention.
  • the device corresponding to the method is a device in a system for performing random access according to an embodiment of the present invention, and the method solves the problem. Similar to the system, so the implementation of the method can refer to the implementation of the device, and the repeated description will not be repeated.
  • the third method for performing random access in the embodiment of the present invention includes:
  • Step 1700 The user equipment that needs to perform handover acquires the second resource information by using the source cell.
  • Step 1701 The user equipment determines, according to the second resource information, an uplink transmission dedicated resource allocated by the target cell to the user equipment.
  • Step 1702 The user equipment accesses the target cell by using an uplink transmission dedicated resource.
  • the user equipment obtains the second resource information by using the source cell, including:
  • the user equipment acquires the second resource information by using an RRC reconfiguration message sent by the source cell.
  • the user equipment accesses the target cell through the uplink transmission dedicated resource, including:
  • the user equipment sends an RRC reconfiguration complete message to the target cell by using an uplink transmission dedicated resource.
  • the execution subject target cell of the method is equivalent to the network side device managing the target cell.
  • a method for performing random access according to a fourth embodiment of the present invention includes:
  • Step 1800 The target cell allocates an uplink transmission dedicated resource to the user equipment that needs to be switched.
  • Step 1801 The target cell notifies the source cell of the allocated uplink transmission dedicated resource, so that the source cell notifies the user equipment of the uplink transmission dedicated resource, and enables the user equipment to access the target cell by using the uplink transmission dedicated resource.
  • the method further includes:
  • the target cell receives a handover request message from the source cell.
  • the target cell notifies the source cell of the allocated uplink transmission dedicated resource, including:
  • the target cell notifies the source cell of the second resource information corresponding to the allocated uplink transmission dedicated resource through the X2 interface.
  • the target cell notifies the source cell of the allocated uplink transmission dedicated resource, including:
  • the target cell notifies the source cell of the allocated uplink transmission dedicated resource by using a handover request acknowledgement message.
  • the method further includes:
  • the target cell After receiving the RRC reconfiguration complete message sent by the user equipment, the target cell notifies the user equipment of the uplink TA in the target cell by using the PDCCH based on the UE C-RNTI addressing.
  • the execution subject source cell of the method is equivalent to the network side device managing the source cell.
  • the fifth method for performing random access according to the fifth embodiment of the present invention includes:
  • Step 1900 After the user equipment needs to perform handover, the source cell sends a handover request message to the target cell.
  • Step 1901 The source cell notifies the user equipment of the uplink transmission dedicated resource to the user equipment, so that the user equipment accesses the target cell by using the uplink transmission dedicated resource.
  • the source cell allocates, by the target cell, the uplink transmission dedicated resource notification to the user equipment, including:
  • the source cell notifies the user equipment of the uplink transmission dedicated resource for the user equipment by using the RRC reconfiguration message including the mobility control information.
  • the method for non-contention random access in the embodiment of the present invention includes:
  • Step 1 After receiving the handover request (HANDOVER REQUEST) message sent by the source cell, the target cell allocates a random access uplink transmission dedicated resource to the UE that needs to perform handover, and is used for the UE to access the target cell.
  • the first uplink transmission After receiving the handover request (HANDOVER REQUEST) message sent by the source cell, the target cell allocates a random access uplink transmission dedicated resource to the UE that needs to perform handover, and is used for the UE to access the target cell.
  • the first uplink transmission After receiving the handover request (HANDOVER REQUEST) message sent by the source cell, the target cell allocates a random access uplink transmission dedicated resource to the UE that needs to perform handover, and is used for the UE to access the target cell.
  • the first uplink transmission After receiving the handover request (HANDOVER REQUEST) message sent by the source cell, the target cell allocates a random access uplink transmission dedicated resource to the UE that needs to perform handover, and is used for the UE to
  • the target cell sends the information of the user to determine the random access uplink dedicated resource to the source cell in the target eNB To Source eNB Transparent Container in the HANDOVER REQUEST ACKNOWLEDGE message.
  • Step 2 The source cell sends an RRC reconfiguration (RRC reconfiguration) message containing the mobility control information to the UE, where the information about the random access uplink transmission dedicated resource used by the target cell to be accessed by the target cell is included.
  • RRC reconfiguration RRC reconfiguration
  • Step 3 The UE determines the random access uplink transmission dedicated resource corresponding to the information in the message according to the RRC reconfiguration message received from the source cell, and sends the RRC to the Target cell by using the random uplink transmission dedicated resource based on the downlink timing of the Target cell.
  • the RRC reconfiguration complete message is configured to complete access to the target cell.
  • the Target cell receives the RRC reconfiguration complete message sent by the UE, and then sends the PDCCH based on the UE C-RNTI addressing.
  • the uplink TA of the UE on the Target cell is a TA adjustment step (78 m).
  • the user equipment sends the user equipment identification information to the cell through the resources in the random access dedicated contention resource pool; if the user equipment receives the contention resolution message from the cell, Determine whether the random access is successful according to the contention resolution message.
  • the user equipment determines, according to the second resource information, the uplink transmission dedicated resource allocated by the target cell to the user equipment, and accesses the target cell by using the uplink transmission dedicated resource. Since the random access interaction process can be reduced, the delay of the random access can be reduced, and the solution can be applied in a scenario where the delay requirement is strict.

Landscapes

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

Abstract

本发明实施例涉及无线通信技术领域,特别涉及一种进行随机接入的方法和设备,用以解决现有技术中存在的随机接入过程时延比较长,无法应用在对时延要求比较严格的场景的问题。本发明实施例随机接入过程中,用户设备通过随机接入专用竞争资源池中的资源向小区发送用户设备标识信息;若所述用户设备收到来自小区的竞争解决消息,根据所述竞争解决消息判断随机接入是否成功。本发明实施例非随机接入过程中,用户设备根据所述第二资源信息确定目标小区为所述用户设备分配的上行传输专用资源;通过所述上行传输专用资源接入所述目标小区。由于能够减少随机接入的交互过程,从而降低了随机接入的时延,能够应用在对时延要求比较严格的场景中。

Description

一种进行随机接入的方法和设备
本申请要求在2015年6月9日提交中国专利局、申请号为201510312744.1、发明名称为“一种进行随机接入的方法和设备”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本发明涉及无线通信技术领域,特别涉及一种进行随机接入的方法和设备。
背景技术
长期演进(Long Term Evolution,LTE)系统中的随机接入分为非竞争随机接入和竞争随机接入两种。下面分别对这两种随机接入过程进行介绍:
非竞争随机接入的过程,主要分为三步:
1、基站向用户设备(User Equipment,UE)分配用于非竞争随机接入的专用随机接入前导码(Random Acelless Preamble,ra-PreambleIndex)以及随机接入使用的物理随机接入信道(Physical Random Access Channel,PRACH)资源。
2、UE根据指示的ra-PreambleIndex和随机接入使用的PRACH资源,在指定的PRACH资源上向基站发送指定的专用前导码(preamble)。基站收到后计算上行定时提前量(Time Alignment,TA)。
3、基站向UE发送随机接入响应,随机接入响应中包含定时提前量信息和后续上行传输资源分配上行链路调度(UL grant),定时提前量用于UE后续上行传输的定时关系。
竞争随机接入的过程,主要分为四步:
1、UE选择随机接入preamble和PRACH资源并利用该PRACH资源向基站发送所选的随机接入preamble;
2、基站接收到preamble,计算定时提前量TA,并向UE发送随机接入响应,随机接入响应中至少包含该定时提前量信息和UL grant;
3、UE在指定的UL grant上发送上行传输;
4、竞争解决消息,UE根据Msg4可以判断随机接入是否成功。
未来通信系统(比如5G系统)可能会使用高频段(比如5.9GHz)作为小小区提供热点部署。
高频段小小区使用方式可以有如下:
方式1:Standalone方式,即该小区可以作为独立小区工作,允许UE单独接入和驻留。
方式2:Non-standalone方式,即该小区只作为资源使用,不允许UE单独接入和驻留。
目前的随机接入过程由于交互过程比较多,会增加随机接入的时延,无法满足高频点小小区的应用场景。
综上所述,目前的随机接入过程时延比较长,无法应用在对时延要求比较严格的场景中。
发明内容
本发明提供一种进行随机接入的方法和设备,用以解决现有技术中存在的随机接入过程时延比较长,无法应用在对时延要求比较严格的场景的问题。
本发明实施例提供的一种进行随机接入的方法,该方法包括:
用户设备在接入小区时,确定随机接入专用竞争资源池;
所述用户设备通过随机接入专用竞争资源池中的资源向小区发送用户设备标识信息;
若所述用户设备收到来自小区的竞争解决消息,根据所述竞争解决消息判断随机接入是否成功。
可选的,所述用户设备在接入小区时,确定随机接入专用竞争资源池,包括:
所述用户设备根据小区广播的第一资源信息,确定随机接入专用竞争资源池。
可选的,所述用户设备根据小区广播的第一资源信息,确定随机接入专用竞争资源池,包括:
所述用户设备根据小区广播的第一资源信息,确定多个随机接入专用竞争资源池,从多个随机接入专用竞争资源池中选择一个随机接入专用竞争资源池。
可选的,所述用户设备通过随机接入专用竞争资源池中的资源向小区发送用户设备标识信息,包括:
所述用户设备基于所述小区的下行定时,通过随机接入专用竞争资源池中的资源向小区发送用户设备标识信息。
可选的,若所述随机接入目的是用户设备初始接入或RRC连接重建,所述用户设备标识信息为CCCH SDU;或
若所述随机接入目的是获得上行同步,所述用户设备标识信息为C-RNTI MAC CE。
可选的,所述用户设备根据所述竞争解决消息判断随机接入是否成功,包括:
若所述竞争解决消息中包括的CCCH SDU为发送给小区的CCCH SDU,则确定随机接入成功;否则,确定随机接入失败;
若所述竞争解决消息中包括基于发送给小区的C-RNTI MAC CE寻址的PDCCH,则确定随机接入成功;否则,确定随机接入失败。
可选的,所述用户设备在接入小区时,确定随机接入专用竞争资源池之后,还包括:
若确定的随机接入专用竞争资源池的容量大于第一门限值,所述用户设备向所述小区 发送BSR信息和/或需要传输的部分或全部数据。
可选的,所述用户设备接收所述竞争解决消息,包括:
若所述用户设备随机接入目的是初始接入或RRC连接重建,所述用户设备通过小区广播的第二资源信息对应的资源池,接收所述竞争解决消息,或通过CB-RNTI调度的资源,接收所述竞争解决消息;或
若所述用户设备随机接入目的是获取上行同步,所述用户设备通过C-RNTI寻址的PDCCH调度的PDSCH资源,接收所述竞争解决消息。
可选的,该方法还包括:
若所述用户设备在竞争解决时间窗内,未收到所述竞争解决消息,则随机等待一段时间后,重新选择随机接入专用竞争资源池并再次发起随机接入。
本发明实施例提供的一种进行随机接入的方法,该方法包括:
小区广播用于确定随机接入专用竞争资源池的第一资源信息;
所述小区通过随机接入专用竞争资源池信息对应的随机接入专用竞争资源池,接收需要接入所述小区的用户设备发送的用户设备标识信息;
所述小区在收到所述用户设备标识信息后,向所述用户设备发送竞争解决消息。
可选的,所述小区广播用于确定随机接入专用竞争资源池的第一资源信息,包括:
所述小区通过SIB广播所述第一资源信息;
其中,所述SIB为与当前3GPP TS 36.331中SIB不同的新SIB或者对3GPP TS 36.331中SIB进行扩展得到的SIB。
可选的,所述小区在收到所述用户设备标识信息后,还包括:
若所述用户设备是初始接入或RRC连接建立,所述小区为所述用户设备分配C-RNTI。
可选的,所述小区在收到所述用户设备标识信息后,还包括:
若所述小区半径大于第二门限值,所述小区为所述用户设备配置在所述小区中可用的上行TA。
可选的,若所述用户设备是初始接入或RRC连接建立,所述竞争解决消息中包括用户设备标识信息;
若所述用户设备随机接入的目的是获取上行同步,所述竞争解决消息为针对所述用户设备的C-RNTI的包含初传UL grant的PDCCH调度信息。
可选的,所述小区向所述用户设备发送竞争解决消息,包括:
若所述用户设备随机接入目的是初始接入或RRC连接重建,所述小区通过小区广播的第二资源信息对应的资源池,向所述用户设备发送竞争解决消息,或通过CB-RNTI调度的资源,向所述用户设备发送竞争解决消息;
若所述用户设备随机接入目的是获取上行同步,所述小区通过C-RNTI寻址的PDCCH 调度的PDSCH资源,向所述用户设备发送竞争解决消息。
可选的,所述小区广播第二资源信息,包括:
所述小区通过SIB广播所述第二资源信息;
其中,所述SIB为与当前3GPP TS 36.331中SIB不同的新SIB或者对3GPP TS 36.331中SIB进行扩展得到的SIB。
本发明实施例提供的一种进行随机接入的方法,该方法包括:
需要进行切换的用户设备通过源小区获取第二资源信息;
所述用户设备根据所述第二资源信息确定目标小区为所述用户设备分配的上行传输专用资源;
所述用户设备通过所述上行传输专用资源接入所述目标小区。
可选的,所述用户设备通过源小区获取第二资源信息,包括:
所述用户设备通过所述源小区发送的RRC重配消息,获取所述第二资源信息;
所述用户设备通过所述上行传输专用资源接入所述目标小区,包括:
所述用户设备通过所述上行传输专用资源向所述目标小区发送RRC重配完成消息。
本发明实施例提供的一种进行随机接入的方法,该方法包括:
目标小区为需要切换的用户设备分配上行传输专用资源;
所述目标小区将分配的所述上行传输专用资源通知源小区,以使所述源小区将所述上行传输专用资源通知所述用户设备,并使所述用户设备通过所述上行传输专用资源接入所述目标小区。
可选的,所述目标小区为需要切换的用户设备分配上行传输专用资源之前,还包括:
所述目标小区接收到来自所述源小区的切换请求消息。
可选的,所述目标小区将分配的所述上行传输专用资源通知源小区,包括:
所述目标小区通过X2接口,将分配的所述上行传输专用资源对应的第二资源信息通知源小区。
可选的,所述目标小区将分配的所述上行传输专用资源通知源小区,包括:
所述目标小区通过切换请求确认消息,将分配的所述上行传输专用资源通知源小区。
可选的,所述目标小区将分配的所述上行传输专用资源通知源小区之后,还包括:
所述目标小区在收到所述用户设备发送的RRC重配完成消息后,通过基于UE C-RNTI寻址的PDCCH,将所述用户设备在目标小区中的上行TA通知所述用户设备。
本发明实施例提供的一种进行随机接入的方法,该方法包括:
源小区在用户设备需要进行切换后,向目标小区发送切换请求消息;
所述源小区将目标小区为所述用户设备分配上行传输专用资源通知给所述用户设备,以使所述用户设备通过所述上行传输专用资源接入所述目标小区。
可选的,所述源小区将目标小区为所述用户设备分配上行传输专用资源通知给所述用户设备,包括:
所述源小区通过包含移动性控制信息的RRC重配消息,将目标小区为所述用户设备分配上行传输专用资源通知给所述用户设备。
本发明实施例提供的一种进行随机接入的用户设备,该用户设备包括:
第一确定模块,用于在接入小区时,确定随机接入专用竞争资源池;
第一发送模块,用于通过随机接入专用竞争资源池中的资源向小区发送用户设备标识信息;
第一接入模块,用于若收到来自小区的竞争解决消息,根据所述竞争解决消息判断随机接入是否成功。
可选的,所述第一确定模块具体用于:
根据小区广播的第一资源信息,确定随机接入专用竞争资源池。
可选的,所述第一确定模块具体用于:
根据小区广播的第一资源信息,确定多个随机接入专用竞争资源池,从多个随机接入专用竞争资源池中选择一个随机接入专用竞争资源池。
可选的,所述第一发送模块具体用于:
基于所述小区的下行定时,通过随机接入专用竞争资源池中的资源向小区发送用户设备标识信息。
可选的,若所述随机接入目的是用户设备初始接入或RRC连接重建,所述用户设备标识信息为CCCH SDU;或
若所述随机接入目的是获得上行同步,所述用户设备标识信息为C-RNTI MAC CE。
可选的,所述第一接入模块具体用于:
若所述竞争解决消息中包括的CCCH SDU为发送给小区的CCCH SDU,则确定随机接入成功;否则,确定随机接入失败;
若所述竞争解决消息中包括基于发送给小区的C-RNTI MAC CE寻址的PDCCH,则确定随机接入成功;否则,确定随机接入失败。
可选的,所述第一发送模块具体用于:
在接入小区时,确定随机接入专用竞争资源池之后,若确定的随机接入专用竞争资源池的容量大于第一门限值,向所述小区发送BSR信息和/或需要传输的部分或全部数据。
可选的,所述第一接入模块具体用于:
若所述用户设备随机接入目的是初始接入或RRC连接重建,通过小区广播的第二资源信息对应的资源池,接收所述竞争解决消息,或通过CB-RNTI调度的资源,接收所述竞争解决消息;或
若所述用户设备随机接入目的是获取上行同步,通过C-RNTI寻址的PDCCH调度的PDSCH资源,接收所述竞争解决消息。
可选的,所述第一接入模块还用于:
若所述用户设备在竞争解决时间窗内,未收到所述竞争解决消息,则随机等待一段时间后,触发第一确定模块重新选择随机接入专用竞争资源池并再次发起随机接入。
本发明实施例提供的一种进行随机接入的网络侧设备,该网络侧设备包括:
广播模块,用于广播用于确定随机接入专用竞争资源池的第一资源信息;
第一接收模块,用于通过随机接入专用竞争资源池信息对应的随机接入专用竞争资源池,接收需要接入所述网络侧设备管理的小区的用户设备发送的用户设备标识信息;
第一传输模块,用于在收到所述用户设备标识信息后,向所述用户设备发送竞争解决消息。
可选的,所述广播模块具体用于:
通过SIB广播所述第一资源信息;
其中,所述SIB为与当前3GPP TS 36.331中SIB不同的新SIB或者对3GPP TS 36.331中SIB进行扩展得到的SIB。
可选的,所述第一接收模块还用于:
在收到所述用户设备标识信息后,若所述用户设备是初始接入或RRC连接建立,为所述用户设备分配C-RNTI。
可选的,所述第一接收模块还用于:
在收到所述用户设备标识信息后,若所述小区半径大于第二门限值,为所述用户设备配置在所述小区中可用的上行TA。
可选的,若所述用户设备是初始接入或RRC连接建立,所述竞争解决消息中包括用户设备标识信息;
若所述用户设备随机接入的目的是获取上行同步,所述竞争解决消息为针对所述用户设备的C-RNTI的包含初传UL grant的PDCCH调度信息。
可选的,所述第一传输模块具体用于:
若所述用户设备随机接入目的是初始接入或RRC连接重建,通过小区广播的第二资源信息对应的资源池,向所述用户设备发送竞争解决消息,或通过CB-RNTI调度的资源,向所述用户设备发送竞争解决消息;
若所述用户设备随机接入目的是获取上行同步,通过C-RNTI寻址的PDCCH调度的PDSCH资源,向所述用户设备发送竞争解决消息。
可选的,所述广播模块具体用于:
通过SIB广播所述第二资源信息;
其中,所述SIB为与当前3GPP TS 36.331中SIB不同的新SIB或者对3GPP TS 36.331中SIB进行扩展得到的SIB。
本发明实施例提供的另一种进行随机接入的用户设备,该用户设备包括:
获取模块,用于在需要进行切换时通过源小区获取第二资源信息;
第二确定模块,用于根据所述第二资源信息确定目标小区为所述用户设备分配的上行传输专用资源;
第二接入模块,用于通过所述上行传输专用资源接入所述目标小区。
可选的,所述获取模块具体用于:
通过所述源小区发送的RRC重配消息,获取所述第二资源信息;
所述第二接入模块具体用于:
通过所述上行传输专用资源向所述目标小区发送RRC重配完成消息。
本发明实施例提供的一种进行随机接入的目标网络侧设备,该目标网络侧设备包括:
分配模块,用于为需要切换的用户设备分配上行传输专用资源;
第二传输模块,用于将分配的所述上行传输专用资源通知源小区,以使所述源小区将所述上行传输专用资源通知所述用户设备,并使所述用户设备通过所述上行传输专用资源接入所述目标小区。
可选的,所述分配模块具体用于:
接收到来自所述源小区的切换请求消息后,为需要切换的用户设备分配上行传输专用资源。
可选的,所述第二传输模块具体用于:
通过X2接口,将分配的所述上行传输专用资源对应的第二资源信息通知源小区。
可选的,所述第二传输模块具体用于:
通过切换请求确认消息,将分配的所述上行传输专用资源通知源小区。
可选的,所述第二传输模块还用于:
将分配的所述上行传输专用资源通知源小区之后,在收到所述用户设备发送的RRC重配完成消息后,通过基于UE C-RNTI寻址的PDCCH,将所述用户设备在目标小区中的上行TA通知所述用户设备。
本发明实施例提供的一种进行随机接入的源网络侧设备,该源网络侧设备包括:
第三传输模块,用于在用户设备需要进行切换后,向目标小区发送切换请求消息;
第四传输模块,用于将目标小区为所述用户设备分配上行传输专用资源通知给所述用户设备,以使所述用户设备通过所述上行传输专用资源接入所述目标小区。
可选的,所述第四传输模块具体用于:
通过包含移动性控制信息的RRC重配消息,将目标小区为所述用户设备分配上行传 输专用资源通知给所述用户设备。
本发明实施例随机接入过程中,用户设备通过随机接入专用竞争资源池中的资源向小区发送用户设备标识信息;若所述用户设备收到来自小区的竞争解决消息,根据所述竞争解决消息判断随机接入是否成功。本发明实施例非随机接入过程中,用户设备根据所述第二资源信息确定目标小区为所述用户设备分配的上行传输专用资源;通过所述上行传输专用资源接入所述目标小区。由于能够减少随机接入的交互过程,从而降低了随机接入的时延,能够应用在对时延要求比较严格的场景中。
附图说明
图1为本发明实施例第一种进行随机接入的系统结构示意图;
图2为本发明实施例第一种用户设备的结构示意图;
图3为本发明实施例第一种网络侧设备的结构示意图;
图4为本发明实施例第二种用户设备的结构示意图;
图5为本发明实施例第二种网络侧设备的结构示意图;
图6为本发明实施例第一种进行随机接入的方法流程示意图;
图7为本发明实施例第二种进行随机接入的方法流程示意图;
图8为本发明实施例进行初始接入或RRC连接重建的方法流程示意图;
图9为本发明实施例进行随机接入获得UL同步的方法流程示意图;
图10为本发明实施例第二种进行随机接入的系统结构示意图;
图11为本发明实施例第三种用户设备的结构示意图;
图12为本发明实施例第三种网络侧设备的结构示意图;
图13为本发明实施例第四种网络侧设备的结构示意图;
图14为本发明实施例第四种用户设备的结构示意图;
图15为本发明实施例第五种网络侧设备的结构示意图;
图16为本发明实施例第六种网络侧设备的结构示意图;
图17为本发明实施例第三种进行随机接入的方法流程示意图;
图18为本发明实施例第四种进行随机接入的方法流程示意图;
图19为本发明实施例第五种进行随机接入的方法流程示意图;
图20为本发明实施例非竞争随机接入的方法流程示意图。
具体实施方式
本发明实施例随机接入过程中,用户设备通过随机接入专用竞争资源池中的资源向小区发送用户设备标识信息;若用户设备收到来自小区的竞争解决消息,根据竞争解决消息 判断随机接入是否成功。本发明实施例非随机接入过程中,用户设备根据第二资源信息确定目标小区为用户设备分配的上行传输专用资源;通过上行传输专用资源接入目标小区。由于能够减少随机接入的交互过程,从而降低了随机接入的时延,能够应用在对时延要求比较严格的场景中。
本发明实施例提出了两种随机接入的方案,即竞争随机接入方案和非竞争随机接入方案。
其中,竞争随机接入方案可以参见图1~图9的内容。非竞争随机接入方案可以参见图10~图19的内容。
下面结合说明书附图对本发明实施例作进一步详细描述。
如图1所示,本发明实施例第一种进行随机接入的系统包括:用户设备10和管理小区的网络侧设备20。
用户设备10,用于在接入小区时,确定随机接入专用竞争资源池;通过随机接入专用竞争资源池中的资源向小区发送用户设备标识信息;收到来自小区的竞争解决消息,根据竞争解决消息判断随机接入是否成功。
网络侧设备20,用于广播用于确定随机接入专用竞争资源池的第一资源信息;通过随机接入专用竞争资源池信息对应的随机接入专用竞争资源池,接收需要接入网络侧设备管理的小区的用户设备发送的用户设备标识信息;在收到用户设备标识信息后,向用户设备发送竞争解决消息。
如果网络侧设备收到用户设备标识信息,则确定对应的用户设备竞争成功,向对应的用户设备发送竞争解决消息;
相应的,如果用户设备收到竞争解决消息,则确定随机接入成功。
在实施中,网络侧设备在管理的小区中广播至少一块随机接入专用竞争资源池对应的第一资源信息,UE要接入小区时,先读取广播消息,获取第一资源信息,然后利用第一资源信息对应的随机接入专用竞争资源池内的资源传输UE标识信息,一旦网络侧设备成功接收到该UE标识信息,则确认UE竞争成功并向UE进行发送竞争解决消息。
本发明实施例小区广播用于确定随机接入专用竞争资源池的第一资源信息时,通过SIB广播第一资源信息;
其中,SIB为与当前3GPP TS 36.331中SIB不同的新SIB或者对第三代移动通信标准化组织(3rd Generation Partnership Project,3GPP)技术规范(Technical specification,TS)36.331中SIB进行扩展得到的系统信息广播(System Information Broadcast,SIB)。
其中,第一资源信息可以包括但不限于下列信息中的部分或全部:
随机接入专用竞争资源池对应的时频位置、允许的调制编码方式(Modulation and coding scheme,MCS)等级、优先级。
用户设备通过广播收到第一资源信息后,根据时频位置就可以确定随机接入专用竞争资源池,
如果有多个随机接入专用竞争资源池,则用户设备可以根据每个时频位置确定对应的随机接入专用竞争资源池。
如果有MCS等级,则用户设备可以根据MCS等级确定用户设备标识传输使用的调制编码方式。
如果有多个随机接入专用竞争资源池,用户设备可以根据每个随机接入专用竞争资源池对应的优先级,选择优先级高的一个随机接入专用竞争资源池。
在实施中,用户设备在确定了随机接入专用竞争资源池后,可以基于小区的下行定时,通过随机接入专用竞争资源池中的资源向小区发送用户设备标识信息。也就是说,按照该小区下行接收时刻,通过随机接入专用竞争资源池中的资源向小区发送用户设备标识信息。
可选的,本发明实施例的用户设备标识可以是:
若随机接入目的是用户设备初始接入或无线资源控制(Radio Resource Control,RRC)连接重建,用户设备标识信息为公共控制信道(Common Control Channel,CCCH)业务数据单元(Service Data Units,SDU);也可以是其他能够标识用户设备的信息。
若随机接入目的是获得上行同步,用户设备标识信息为小区无线网络临时标识符(Cell Radio Network Temporary Identifier,C-RNTI)媒体接入层控制单元(MAC Control Element,MAC CE);也可以是其他能够标识用户设备的信息。
相应的,用户设备根据竞争解决消息判断随机接入是否成功时:
若竞争解决消息中包括的CCCH SDU为发送给小区的CCCH SDU,则确定随机接入成功;否则,确定随机接入失败;
若竞争解决消息中包括基于发送给小区的C-RNTI MAC CE寻址的物理下行控制信道(Physical Downlink Control Channel,PDCCH),则确定随机接入成功;否则,确定随机接入失败。
可选的,如果用户设备确定随机接入失败,可以随机等待一段时间后,重新选择随机接入专用竞争资源池并再次发起随机接入。
在实施中,可以设定一个随机接入尝试次数,在达到该尝试次数之前,随机接入不成功,则一直重试;如果超过该次数,则停止随机接入。
可选的,若用户设备确定的随机接入专用竞争资源池的容量大于第一门限值,用户设备向小区发送缓存状态上报(Buffer Status Report,BSR)信息和/或需要传输的部分或全部数据。
这里的第一门限值可以根据经验、仿真、需求等确定。
如果用户设备是初始接入或RRC连接建立,网络侧设备在确定用户设备竞争成功后,还可以为用户设备分配C-RNTI。
可选的,网络侧设备可以通过竞争解决消息将C-RNTI分配给用户设备;也可以通过其他消息将C-RNTI分配给用户设备。
在实施中,如果小区半径大于第二门限值,网络侧设备在确定用户设备竞争成功后,还可以为用户设备配置在小区中可用的上行TA。
这里的第二门限值可以根据经验、仿真、需求等确定。比如可以将第二门限值设置为一个定时提前(Time Alignment,TA)调整步长的大小。目前一个TA调整步长为78m。
可选的,网络侧设备可以通过竞争解决消息将TA分配给用户设备;也可以通过其他消息将TA分配给用户设备。
在实施中,若用户设备随机接入目的是初始接入或RRC连接重建,网络侧设备可以将收到的用户设备标识信息置于竞争解决消息中。可选的,网络侧设备还可以将分配给用户设备的C-RNTI和/或TA置于竞争解决消息中。
若用户设备随机接入目的是获取上行同步,网络侧设备通过C-RNTI寻址的PDCCH调度的下行物理共享信道(Physical Downlink Shared Channel,PDSCH)资源,向用户设备发送竞争解决消息。可选的,网络侧设备还可以将分配给用户设备的TA置于竞争解决消息中。
可选的,网络侧设备在向用户设备发送竞争解决消息时:
若用户设备随机接入目的是初始接入或RRC连接重建,小区通过小区广播的第二资源信息对应的资源池,向用户设备发送竞争解决消息,或通过竞争的无线网络临时标识(CB-RNTI)调度的资源,向用户设备发送竞争解决消息;
相应的,用户设备通过小区广播的第二资源信息对应的资源池,接收竞争解决消息,或通过CB-RNTI调度的资源,接收竞争解决消息。
可选的,小区广播第二资源信息时,通过SIB广播第二资源信息;
其中,SIB为与当前3GPP TS 36.331中SIB不同的新SIB或者对3GPP TS 36.331中SIB进行扩展得到的SIB。
若用户设备随机接入目的是获取上行同步,小区通过C-RNTI寻址的PDCCH调度的PDSCH资源,向用户设备发送竞争解决消息;
相应的,用户设备通过C-RNTI寻址的PDCCH调度的PDSCH资源,接收竞争解决消息。
可选的,网络侧设备可以通过广播或专用信令(专用信令适用于用户设备已经建立RRC连接的情况)为用户设备配置一个竞争解决时间窗;
相应的,若用户设备在竞争解决时间窗内,接收竞争解决消息,如果收到,则认为竞 争成功;
如果在竞争解决时间窗内未收到竞争解决消息,则随机等待一段时间后,重新选择随机接入专用竞争资源池并再次发起随机接入。
如图2所示,本发明实施例的第一种用户设备包括:
第一确定模块200,用于在接入小区时,确定随机接入专用竞争资源池;
第一发送模块201,用于通过随机接入专用竞争资源池中的资源向小区发送用户设备标识信息;
第一接入模块202,用于若收到来自小区的竞争解决消息,根据竞争解决消息判断随机接入是否成功。
可选的,第一确定模块200具体用于:
根据小区广播的第一资源信息,确定随机接入专用竞争资源池。
可选的,第一确定模块200具体用于:
根据小区广播的第一资源信息,确定多个随机接入专用竞争资源池,从多个随机接入专用竞争资源池中选择一个随机接入专用竞争资源池。
可选的,第一发送模块201具体用于:
基于小区的下行定时,通过随机接入专用竞争资源池中的资源向小区发送用户设备标识信息。
可选的,若随机接入目的是用户设备初始接入或RRC连接重建,用户设备标识信息为CCCH SDU;
若随机接入目的是获得上行同步,用户设备标识信息为C-RNTI MAC CE。
可选的,第一接入模块202具体用于:
若竞争解决消息中包括的CCCH SDU为发送给小区的CCCH SDU,则确定随机接入成功;否则,确定随机接入失败;
若竞争解决消息中包括基于发送给小区的C-RNTI MAC CE寻址的PDCCH,则确定随机接入成功;否则,确定随机接入失败。
可选的,第一发送模块201具体用于:
在接入小区时,确定随机接入专用竞争资源池之后,若确定的随机接入专用竞争资源池的容量大于第一门限值,向小区发送BSR信息和/或需要传输的部分或全部数据。
可选的,第一接入模块202具体用于:
若用户设备随机接入目的是初始接入或RRC连接重建,通过小区广播的第二资源信息对应的资源池,接收竞争解决消息,或通过CB-RNTI调度的资源,接收竞争解决消息;
若用户设备随机接入目的是获取上行同步,通过C-RNTI寻址的PDCCH调度的PDSCH资源,接收竞争解决消息。
可选的,第一接入模块202还用于:
若用户设备在竞争解决时间窗内,未收到竞争解决消息,则随机等待一段时间后,触发第一确定模块重新选择随机接入专用竞争资源池并再次发起随机接入。
如图3所示,本发明实施例的第一种网络侧设备包括:
广播模块300,用于广播用于确定随机接入专用竞争资源池的第一资源信息;
第一接收模块301,用于通过随机接入专用竞争资源池信息对应的随机接入专用竞争资源池,接收需要接入网络侧设备管理的小区的用户设备发送的用户设备标识信息;
第一传输模块302,用于在收到用户设备标识信息后,向用户设备发送竞争解决消息。
可选的,广播模块300具体用于:
通过SIB广播第一资源信息;
其中,SIB为与当前3GPP TS 36.331中SIB不同的新SIB或者对3GPP TS 36.331中SIB进行扩展得到的SIB。
可选的,第一接收模块301还用于:
在收到用户设备标识信息后,若用户设备是初始接入或RRC连接建立,为用户设备分配C-RNTI。
可选的,第一接收模块301还用于:
在收到用户设备标识信息后,若小区半径大于第二门限值,为用户设备配置在小区中可用的上行TA。
可选的,若用户设备是初始接入或RRC连接建立,竞争解决消息中包括用户设备标识信息;
若用户设备随机接入的目的是获取上行同步,竞争解决消息为针对用户设备的C-RNTI的包含初传上行链路调度(UL grant)的PDCCH调度信息。
可选的,第一传输模块302具体用于:
若用户设备随机接入目的是初始接入或RRC连接重建,通过小区广播的第二资源信息对应的资源池,向用户设备发送竞争解决消息,或通过CB-RNTI调度的资源,向用户设备发送竞争解决消息;
若用户设备随机接入目的是获取上行同步,通过C-RNTI寻址的PDCCH调度的PDSCH资源,向用户设备发送竞争解决消息。
可选的,广播模块300具体用于:
通过SIB广播第二资源信息;
其中,SIB为与当前3GPP TS 36.331中SIB不同的新SIB或者对3GPP TS 36.331中SIB进行扩展得到的SIB。
如图4所示,本发明实施例的第二种用户设备包括:
处理器401,用于读取存储器404中的程序,执行下列过程:
在接入小区时,确定随机接入专用竞争资源池;利用收发机402通过随机接入专用竞争资源池中的资源向小区发送用户设备标识信息;若收到来自小区的竞争解决消息,利用收发机402根据竞争解决消息判断随机接入是否成功。
收发机402,用于在处理器401的控制下接收和发送数据。
可选的,处理器401具体用于:
根据小区广播的第一资源信息,确定随机接入专用竞争资源池。
可选的,处理器401具体用于:
根据小区广播的第一资源信息,确定多个随机接入专用竞争资源池,从多个随机接入专用竞争资源池中选择一个随机接入专用竞争资源池。
可选的,处理器401具体用于:
基于小区的下行定时,通过随机接入专用竞争资源池中的资源向小区发送用户设备标识信息。
可选的,若随机接入目的是用户设备初始接入或RRC连接重建,用户设备标识信息为CCCH SDU;
若随机接入目的是获得上行同步,用户设备标识信息为C-RNTI MAC CE。
可选的,处理器401具体用于:
若竞争解决消息中包括的CCCH SDU为发送给小区的CCCH SDU,则确定随机接入成功;否则,确定随机接入失败;
若竞争解决消息中包括基于发送给小区的C-RNTI MAC CE寻址的PDCCH,则确定随机接入成功;否则,确定随机接入失败。
可选的,处理器401具体用于:
在接入小区时,确定随机接入专用竞争资源池之后,若确定的随机接入专用竞争资源池的容量大于第一门限值,向小区发送BSR信息和/或需要传输的部分或全部数据。
可选的,处理器401具体用于:
若用户设备随机接入目的是初始接入或RRC连接重建,通过小区广播的第二资源信息对应的资源池,接收竞争解决消息,或通过CB-RNTI调度的资源,接收竞争解决消息;
若用户设备随机接入目的是获取上行同步,通过C-RNTI寻址的PDCCH调度的PDSCH资源,接收竞争解决消息。
可选的,处理器401还用于:
若用户设备在竞争解决时间窗内,未收到竞争解决消息,则随机等待一段时间后,触发第一确定模块重新选择随机接入专用竞争资源池并再次发起随机接入。
在图4中,总线架构(用总线400来代表),总线400可以包括任意数量的互联的总 线和桥,总线400将包括由通用处理器401代表的一个或多个处理器和存储器404代表的存储器的各种电路链接在一起。总线400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403在总线400和收发机402之间提供接口。收发机402可以是一个元件,也可以是多个元件,比如多个接收器和发送器,提供用于在传输介质上与各种其他装置通信的单元。例如:收发机402从其他设备接收外部数据。收发机402用于将处理器401处理后的数据发送给其他设备。取决于计算系统的性质,还可以提供用户接口405,例如小键盘、显示器、扬声器、麦克风、操纵杆。
处理器401负责管理总线400和通常的处理,如前述运行通用操作系统。而存储器404可以被用于存储处理器401在执行操作时所使用的数据。
可选的,处理器401可以是中央处埋器(CPU)、专用集成电路(Application Specific Integrated Circuit,ASIC)、现场可编程门阵列(Field-Programmable Gate Array,FPGA)或复杂可编程逻辑器件(Complex Programmable Logic Device,CPLD)。
如图5所示,本发明实施例的第二种网络侧设备包括:
处理器501,用于读取存储器504中的程序,执行下列过程:
通过收发机502广播用于确定随机接入专用竞争资源池的第一资源信息;通过随机接入专用竞争资源池信息对应的随机接入专用竞争资源池,通过收发机502接收需要接入网络侧设备管理的小区的用户设备发送的用户设备标识信息;在收到用户设备标识信息后,通过收发机502向用户设备发送竞争解决消息。
收发机502,用于在处理器501的控制下接收和发送数据。
可选的,处理器501具体用于:
通过SIB广播第一资源信息;
其中,SIB为与当前3GPP TS 36.331中SIB不同的新SIB或者对3GPP TS 36.331中SIB进行扩展得到的SIB。
可选的,处理器501还用于:
在收到用户设备标识信息后,若用户设备是初始接入或RRC连接建立,为用户设备分配C-RNTI。
可选的,处理器501还用于:
在收到用户设备标识信息后,若小区半径大于第二门限值,为用户设备配置在小区中可用的上行TA。
可选的,若用户设备是初始接入或RRC连接建立,竞争解决消息中包括用户设备标识信息;
若用户设备随机接入的目的是获取上行同步,竞争解决消息为针对用户设备的C-RNTI 的包含初传UL grant的PDCCH调度信息。
可选的,处理器501具体用于:
若用户设备随机接入目的是初始接入或RRC连接重建,通过小区广播的第二资源信息对应的资源池,向用户设备发送竞争解决消息,或通过CB-RNTI调度的资源,向用户设备发送竞争解决消息;
若用户设备随机接入目的是获取上行同步,通过C-RNTI寻址的PDCCH调度的PDSCH资源,向用户设备发送竞争解决消息。
可选的,处理器501具体用于:
通过SIB广播第二资源信息;
其中,SIB为与当前3GPP TS 36.331中SIB不同的新SIB或者对3GPP TS 36.331中SIB进行扩展得到的SIB。
在图5中,总线架构(用总线500来代表),总线500可以包括任意数量的互联的总线和桥,总线500将包括由处理器501代表的一个或多个处理器和存储器504代表的存储器的各种电路链接在一起。总线500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503在总线500和收发机502之间提供接口。收发机502可以是一个元件,也可以是多个元件,比如多个接收器和发送器,提供用于在传输介质上与各种其他装置通信的单元。经处理器501处理的数据通过天线505在无线介质上进行传输,进一步,天线505还接收数据并将数据传送给处理器501。
处理器501负责管理总线500和通常的处理,还可以提供各种功能,包括定时,外围接口,电压调节、电源管理以及其他控制功能。而存储器504可以被用于存储处理器501在执行操作时所使用的数据。
可选的,处理器501可以是CPU、ASIC、FPGA或CPLD。
基于同一发明构思,本发明实施例中还提供了一种进行随机接入的方法,由于该方法对应的设备是本发明实施例进行随机接入的系统中的设备,并且该方法解决问题的原理与系统相似,因此该方法的实施可以参见设备的实施,重复之处不再赘述。
如图6所示,本发明实施例第一种进行随机接入的方法包括:
步骤601、用户设备在接入小区时,确定随机接入专用竞争资源池;
步骤602、用户设备通过随机接入专用竞争资源池中的资源向小区发送用户设备标识信息;
步骤603、若用户设备收到来自小区的竞争解决消息,根据竞争解决消息判断随机接入是否成功。
可选的,用户设备在接入小区时,确定随机接入专用竞争资源池,包括:
用户设备根据小区广播的第一资源信息,确定随机接入专用竞争资源池。
可选的,用户设备根据小区广播的第一资源信息,确定随机接入专用竞争资源池,包括:
用户设备根据小区广播的第一资源信息,确定多个随机接入专用竞争资源池,从多个随机接入专用竞争资源池中选择一个随机接入专用竞争资源池。
可选的,用户设备通过随机接入专用竞争资源池中的资源向小区发送用户设备标识信息,包括:
用户设备基于小区的下行定时,通过随机接入专用竞争资源池中的资源向小区发送用户设备标识信息。
可选的,若随机接入目的是用户设备初始接入或RRC连接重建,用户设备标识信息为CCCH SDU;
若随机接入目的是获得上行同步,用户设备标识信息为C-RNTI MAC CE。
可选的,用户设备根据竞争解决消息判断随机接入是否成功,包括:
若竞争解决消息中包括的CCCH SDU为发送给小区的CCCH SDU,则确定随机接入成功;否则,确定随机接入失败;
若竞争解决消息中包括基于发送给小区的C-RNTI MAC CE寻址的PDCCH,则确定随机接入成功;否则,确定随机接入失败。
可选的,用户设备在接入小区时,确定随机接入专用竞争资源池之后,还包括:
若确定的随机接入专用竞争资源池的容量大于第一门限值,用户设备向小区发送BSR信息和/或需要传输的部分或全部数据。
可选的,用户设备接收竞争解决消息,包括:
若用户设备随机接入目的是初始接入或RRC连接重建,用户设备通过小区广播的第二资源信息对应的资源池,接收竞争解决消息,或通过CB-RNTI调度的资源,接收竞争解决消息;
若用户设备随机接入目的是获取上行同步,用户设备通过C-RNTI寻址的PDCCH调度的PDSCH资源,接收竞争解决消息。
可选的,该方法还包括:
若用户设备在竞争解决时间窗内,未收到竞争解决消息,则随机等待一段时间后,重新选择随机接入专用竞争资源池并再次发起随机接入。
在下面的描述中,方法的执行主体小区等同于管理小区的网络侧设备。
如图7所示,本发明实施例第二种进行随机接入的方法包括:
步骤701、小区广播用于确定随机接入专用竞争资源池的第一资源信息;
步骤702、小区通过随机接入专用竞争资源池信息对应的随机接入专用竞争资源池, 接收需要接入小区的用户设备发送的用户设备标识信息;
步骤703、小区在收到用户设备标识信息后,向用户设备发送竞争解决消息。
可选的,用户设备根据竞争解决消息判断随机接入是否成功,包括:
若竞争解决消息中包括的CCCH SDU为发送给小区的CCCH SDU,则确定随机接入成功;否则,确定随机接入失败;
若竞争解决消息中包括基于发送给小区的C-RNTI MAC CE寻址的PDCCH,则确定随机接入成功;否则,确定随机接入失败。
可选的,小区在收到用户设备标识信息后,还包括:
若用户设备是初始接入或RRC连接建立,小区为用户设备分配C-RNTI。
可选的,小区在收到用户设备标识信息后,还包括:
若小区半径大于第二门限值,小区为用户设备配置在小区中可用的上行TA。
可选的,若用户设备是初始接入或RRC连接建立,竞争解决消息中包括用户设备标识信息;
若用户设备随机接入的目的是获取上行同步,竞争解决消息为针对用户设备的C-RNTI的包含初传UL grant的PDCCH调度信息。
可选的,小区向用户设备发送竞争解决消息,包括:
若用户设备随机接入目的是初始接入或RRC连接重建,小区通过小区广播的第二资源信息对应的资源池,向用户设备发送竞争解决消息,或通过CB-RNTI调度的资源,向用户设备发送竞争解决消息;
若用户设备随机接入目的是获取上行同步,小区通过C-RNTI寻址的PDCCH调度的PDSCH资源,向用户设备发送竞争解决消息。
可选的,小区广播用于确定随机接入专用竞争资源池的第一资源信息,包括:
小区通过SIB广播第一资源信息;
其中,SIB为与当前3GPP TS 36.331中SIB不同的新SIB或者对3GPP TS 36.331中SIB进行扩展得到的SIB。
下面列举几个实例对本本发明的方案进行说明。
实施例1:UE执行初始接入或RRC连接重建(竞争随机接入)。
UE在小区上执行随机接入的目是获得C-RNTI,并建立/重建RRC连接。
如图8所示,本发明实施例进行初始接入或RRC连接重建的方法包括:
步骤1:小区1通过系统信息广播用于确定随机接入专用竞争资源池的资源信息。
可选的,该资源信息可以包含随机接入专用竞争资源池对应的时频位置、允许的MCS等级、随机接入专用竞争资源池对应的优先级等内容。
步骤2:要接入小区1的UE读取该广播消息,获取资源信息(比如时频位置、MCS 等)。如果配置有多个资源池,UE还可以根据对应的优先级进行随机接入竞争资源池选择。然后,UE基于要发起随机接入的小区的下行定时,利用选择的随机接入专用竞争资源池发送UE标识信息。
其中,UE标识信息可以是CCCH SDU或者其他形式的UE标识信息。CCCH SDU携带的内容根据随机接入目的不同而不同。比如,如果接入目的是初始接入,其携带的是RRC连接建立请求消息;如果接入目的是RRC连接重建,其携带的是RRC连接重建请求消息。
可选的,如果小区分配的随机接入专用竞争资源大于第一门限值,UE在发送UE标识信息的同时还可以携带BSR信息和/或要传输的全部或部分的数据。
步骤3:小区1进行竞争判决,即如果小区1接收到UE在步骤2中发送的UE标识信息,则确定UE竞争成功。
对于初始接入和RRC连接重建,小区1确定UE竞争成功后,需要为UE分配C-RNTI。
如果小区1半径大于第二门限值,比如第二门限值为一个TA调整步长(78m),则小区确定UE竞争成功后,还可以确定UE的TA。
步骤4:小区1向UE发送竞争解决消息。
竞争解决消息可以包含UE在步骤2中通过随机接入专用竞争资源发送的UE标识信息。
竞争解决消息传输可以有两种方式:
Opt1:竞争解决消息传输的资源是小区广播的第二资源消息对应的传输资源。
Opt2:引入CB-RNTI,小区使用CB-RNTI调度竞争解决消息传输的资源。
UE在基站配置的时间窗内按照小区广播的随机接入专用竞争解决消息传输池的资源位置或者CB-RNTI调度的竞争解决消息传输的资源位置监听竞争解决消息,一旦接收到该竞争解决消息,其中包含有UE标识信息,则认为竞争成功。若超过时间窗,则判断竞争失败,重新按照步骤2-4再执行随机接入尝试。
实施例2:UE执行随机接入获得UL同步(竞争随机接入)。
UE在小区上执行随机接入的目的是获得UL同步,该场景适用于UE有上行数据需要发送,但是UL失步的情况。
如图9所示,本发明实施例进行随机接入获得UL同步的方法包括:
步骤1:小区1通过系统信息广播用于确定随机接入专用竞争资源池的资源信息。
可选的,该资源信息可以包含随机接入专用竞争资源池对应的时频位置、允许的MCS等级、随机接入专用竞争资源池对应的优先级等内容。
步骤2:要接入小区1的UE读取该广播消息,获取资源信息(比如时频位置、MCS等)。如果配置有多个资源池,UE还可以根据对应的优先级进行随机接入竞争资源池选择。然后,UE基于要发起随机接入的小区的下行定时,利用选择的随机接入专用竞争资源池 发送UE标识信息。
其中,UE标识信息可以是C-RNTI MAC CE或者其他形式的UE标识信息。
可选的,如果小区分配的随机接入专用竞争资源大于第一门限值,UE在发送UE标识信息的同时还可以携带BSR信息和/或要传输的全部或部分的数据。
步骤3:小区1进行竞争判决,即如果小区1接收到UE在步骤2中发送的UE标识信息,则判断UE竞争成功。
步骤4:小区1向UE发送竞争解决消息。
对于UL失步的情况,竞争解决消息可以是针对UE C-RNTI的包含初传UL grant的PDCCH调度信息。
对于UL失步的情况,竞争解决消息是通过C-RNTI寻址的PDCCH调度的,因此传输资源可以是任何PDSCH资源。
可选的,小区1可以将UE在该小区可用的上行TA携带在竞争解决消息中一起发给UE,也可以由小区1后续利用C-RNTI将该上行TA发送给UE。
如图10所示,本发明实施例第二种进行随机接入的系统包括:用户设备1000、目标网络侧设备1010和源网络侧设备1020。
用户设备1000,用于在需要进行切换时,通过管理源小区的源网络侧设备获取第二资源信息;根据第二资源信息确定管理目标小区的目标网络侧设备为用户设备分配的上行传输专用资源;通过上行传输专用资源接入目标小区。
目标网络侧设备1010,用于为需要切换的用户设备分配上行传输专用资源;将分配的上行传输专用资源通知源小区;
源网络侧设备1020,用于在用户设备需要进行切换后,向目标小区发送切换请求消息,将目标小区为用户设备分配上行传输专用资源通知给用户设备。
可选的,若目标网络侧设备接收到来自源小区的切换请求消,则需要切换的用户设备分配上行传输专用资源。
在实施中,目标网络侧设备通过X2接口,将分配的上行传输专用资源对应的第二资源信息通知源小区;
可选的,目标网络侧设备可以将分配的上行传输专用资源对应的第二资源信息置于切换请求确认消息中,发送给源小区。
需要说明的是,除了切换请求确认消息,其他能够将分配的上行传输专用资源通知给源小区的消息都适用本发明实施例。
相应的,源网络侧设备将目标小区为用户设备分配上行传输专用资源对应的第二资源信息通知给用户设备。
可选的,源小区通过包含移动性控制信息的RRC重配消息,将目标小区为用户设备 分配上行传输专用资源通知给用户设备。
相应的,用户设备通过源小区发送的RRC重配消息,获取第二资源信息。
需要说明的是,除了RRC确认消息,其他能够将分配的上行传输专用资源通知给用户设备的消息都适用本发明实施例。
用户设备在获取第二资源信息后,根据第二资源信息确定上行传输专用资源,并通过上行传输专用资源向目标小区发送RRC重配完成消息。
可选的,如果目标小区半径大于第二门限值,目标网络侧设备在确定用户设备竞争成功后,还可以为用户设备配置在小区中可用的上行TA。
这里的第二门限值可以根据经验、仿真、需求等确定。比如可以将第二门限值设置为一个TA调整步长的大小。目前一个TA调整步长为78m。
可选的,目标小区在收到用户设备发送的RRC重配完成消息后,通过基于UE C-RNTI寻址的PDCCH,将用户设备在目标小区中的上行TA通知用户设备。
需要说明的是,除了RRC确认消息,其他能够将分配的上行传输专用资源通知给用户设备的消息都适用本发明实施例。
在实施中,有可能目标小区和源小区同时被一个网络侧设备管理,所以本发明实施例的目标网络侧设备和源网络侧设备也可以是同一个网络侧设备。
如图11所示,本发明实施例的第三种用户设备包括:
获取模块1100,用于在需要进行切换时通过源小区获取第二资源信息;
第二确定模块1110,用于根据第二资源信息确定目标小区为用户设备分配的上行传输专用资源;
第二接入模块1120,用于通过上行传输专用资源接入目标小区。
可选的,获取模块1100具体用于:
通过源小区发送的RRC重配消息,获取第二资源信息;
相应的,第二接入模块1120具体用于:
通过上行传输专用资源向目标小区发送RRC重配完成消息。
由于在不同的场景中用户设备可能会进行竞争随机接入,也可能进行非竞争随机接入,所以图2的用户设备和图11的用户设备可以合成为一个用户设备。
如图12所示,本发明实施例的第三种网络侧设备包括:
分配模块1200,用于为需要切换的用户设备分配上行传输专用资源;
第二传输模块1210,用于将分配的上行传输专用资源通知源小区,以使源小区将上行传输专用资源通知用户设备,并使用户设备通过上行传输专用资源接入目标小区。
可选的,分配模块1200具体用于:
接收到来自源小区的切换请求消息后,为需要切换的用户设备分配上行传输专用资 源。
可选的,第二传输模块1210具体用于:
通过X2接口,将分配的上行传输专用资源对应的第二资源信息通知源小区。
可选的,第二传输模块1210具体用于:
通过切换请求确认消息,将分配的上行传输专用资源通知源小区。
可选的,第二传输模块1210还用于:
将分配的上行传输专用资源通知源小区之后,在收到用户设备发送的RRC重配完成消息后,通过基于UE C-RNTI寻址的PDCCH,将用户设备在目标小区中的上行TA通知用户设备。
如图13所示,本发明实施例的第四种网络侧设备包括:
第三传输模块1300,用于在用户设备需要进行切换后,向目标小区发送切换请求消息;
第四传输模块1310,用于将目标小区为用户设备分配上行传输专用资源通知给用户设备,以使用户设备通过上行传输专用资源接入目标小区。
可选的,第四传输模块1310具体用于:
通过包含移动性控制信息的RRC重配消息,将目标小区为用户设备分配上行传输专用资源通知给用户设备。
在实施中,有可能出现源小区和目标小区都由同一个网络侧设备进行管理,所以本发明实施例图12和图13中的网络侧设备可以是一个网络侧设备。
在实施中,针对不同的场景有可能网络侧设备需要采用竞争方式进行随机接入,也可能会采用非竞争方式进行随机接入,所以本发明实施例图3的网络侧设备可以和图12的网络侧设备合并为一个网络侧设备;图3的网络侧设备可以和图13的网络侧设备合并为一个网络侧设备;图3的网络侧设备、图12的网络侧设备和图13的网络侧设备合并为一个网络侧设备。
如图14所示,本发明实施例的第四种用户设备包括:
处理器1401,用于读取存储器1404中的程序,执行下列过程:
在需要进行切换时利用收发机1402通过源小区获取第二资源信息;根据第二资源信息确定目标小区为用户设备分配的上行传输专用资源;利用收发机1402通过上行传输专用资源接入目标小区。
收发机1402,用于在处理器1401的控制下接收和发送数据。
可选的,处理器1401具体用于:
通过源小区发送的RRC重配消息,获取第二资源信息;
相应的,处理器1401具体用于:
通过上行传输专用资源向目标小区发送RRC重配完成消息。
在图14中,总线架构(用总线1400来代表),总线1400可以包括任意数量的互联的总线和桥,总线1400将包括由通用处理器1401代表的一个或多个处理器和存储器1404代表的存储器的各种电路链接在一起。总线1400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1403在总线1400和收发机1402之间提供接口。收发机1402可以是一个元件,也可以是多个元件,比如多个接收器和发送器,提供用于在传输介质上与各种其他装置通信的单元。例如:收发机1402从其他设备接收外部数据。收发机1402用于将处理器1401处理后的数据发送给其他设备。取决于计算系统的性质,还可以提供用户接口1405,例如小键盘、显示器、扬声器、麦克风、操纵杆。
处理器1401负责管理总线1400和通常的处理,如前述运行通用操作系统。而存储器1404可以被用于存储处理器1401在执行操作时所使用的数据。
可选的,处理器1401可以是CPU、ASIC、FPGA或CPLD。
由于在不同的场景中用户设备可能会进行竞争随机接入,也可能进行非竞争随机接入,所以图4的用户设备和图14的用户设备可以合成为一个用户设备。
如图15所示,本发明实施例的第五种网络侧设备包括:
处理器1501,用于读取存储器1504中的程序,执行下列过程:
为需要切换的用户设备分配上行传输专用资源;通过收发机1502将分配的上行传输专用资源通知源小区,以使源小区将上行传输专用资源通知用户设备,并使用户设备通过上行传输专用资源接入目标小区。
收发机1502,用于在处理器1501的控制下接收和发送数据。
可选的,处理器1501具体用于:
接收到来自源小区的切换请求消息后,为需要切换的用户设备分配上行传输专用资源。
可选的,处理器1501具体用于:
通过X2接口,将分配的上行传输专用资源对应的第二资源信息通知源小区。
可选的,处理器1501具体用于:
通过切换请求确认消息,将分配的上行传输专用资源通知源小区。
可选的,处理器1501还用于:
将分配的上行传输专用资源通知源小区之后,在收到用户设备发送的RRC重配完成消息后,通过基于UE C-RNTI寻址的PDCCH,将用户设备在目标小区中的上行TA通知用户设备。
在图15中,总线架构(用总线1500来代表),总线1500可以包括任意数量的互联的总线和桥,总线1500将包括由处理器1501代表的一个或多个处理器和存储器1504代表 的存储器的各种电路链接在一起。总线1500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1503在总线1500和收发机1502之间提供接口。收发机1502可以是一个元件,也可以是多个元件,比如多个接收器和发送器,提供用于在传输介质上与各种其他装置通信的单元。经处理器1501处理的数据通过天线1505在无线介质上进行传输,进一步,天线1505还接收数据并将数据传送给处理器1501。
处理器1501负责管理总线1500和通常的处理,还可以提供各种功能,包括定时,外围接口,电压调节、电源管理以及其他控制功能。而存储器1504可以被用于存储处理器1501在执行操作时所使用的数据。
可选的,处理器1501可以是CPU、ASIC、FPGA或CPLD。
如图16所示,本发明实施例的第六种网络侧设备包括:
处理器1601,用于读取存储器1604中的程序,执行下列过程:
在用户设备需要进行切换后,通过收发机1602向目标小区发送切换请求消息;通过收发机1602将目标小区为用户设备分配上行传输专用资源通知给用户设备,以使用户设备通过上行传输专用资源接入目标小区。
收发机1602,用于在处理器1601的控制下接收和发送数据。
可选的,处理器1601具体用于:
通过包含移动性控制信息的RRC重配消息,将目标小区为用户设备分配上行传输专用资源通知给用户设备。
在图16中,总线架构(用总线1600来代表),总线1600可以包括任意数量的互联的总线和桥,总线1600将包括由处理器1601代表的一个或多个处理器和存储器1604代表的存储器的各种电路链接在一起。总线1600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1603在总线1600和收发机1602之间提供接口。收发机1602可以是一个元件,也可以是多个元件,比如多个接收器和发送器,提供用于在传输介质上与各种其他装置通信的单元。经处理器1601处理的数据通过天线1605在无线介质上进行传输,进一步,天线1605还接收数据并将数据传送给处理器1601。
处理器1601负责管理总线1600和通常的处理,还可以提供各种功能,包括定时,外围接口,电压调节、电源管理以及其他控制功能。而存储器1604可以被用于存储处理器1601在执行操作时所使用的数据。
可选的,处理器1601可以是CPU、ASIC、FPGA或CPLD。
在实施中,有可能出现源小区和目标小区都由同一个网络侧设备进行管理,所以本发明实施例图15和图16中的网络侧设备可以是一个网络侧设备。
在实施中,针对不同的场景有可能网络侧设备需要采用竞争方式进行随机接入,也可能会采用非竞争方式进行随机接入,所以本发明实施例图5的网络侧设备可以和图15的网络侧设备合并为一个网络侧设备;图5的网络侧设备可以和图16的网络侧设备合并为一个网络侧设备;图5的网络侧设备、图15的网络侧设备和图16的网络侧设备合并为一个网络侧设备。
基于同一发明构思,本发明实施例中还提供了一种进行随机接入的方法,由于该方法对应的设备是本发明实施例进行随机接入的系统中的设备,并且该方法解决问题的原理与系统相似,因此该方法的实施可以参见设备的实施,重复之处不再赘述。
如图17所示,本发明实施例第三种进行随机接入的方法包括:
步骤1700、需要进行切换的用户设备通过源小区获取第二资源信息;
步骤1701、用户设备根据第二资源信息确定目标小区为用户设备分配的上行传输专用资源;
步骤1702、用户设备通过上行传输专用资源接入目标小区。
可选的,用户设备通过源小区获取第二资源信息,包括:
用户设备通过源小区发送的RRC重配消息,获取第二资源信息;
用户设备通过上行传输专用资源接入目标小区,包括:
用户设备通过上行传输专用资源向目标小区发送RRC重配完成消息。
在下面的描述中,方法的执行主体目标小区等同于管理目标小区的网络侧设备。
如图18所示,本发明实施例第四种进行随机接入的方法包括:
步骤1800、目标小区为需要切换的用户设备分配上行传输专用资源;
步骤1801、目标小区将分配的上行传输专用资源通知源小区,以使源小区将上行传输专用资源通知用户设备,并使用户设备通过上行传输专用资源接入目标小区。
可选的,目标小区为需要切换的用户设备分配上行传输专用资源之前,还包括:
目标小区接收到来自源小区的切换请求消息。
可选的,目标小区将分配的上行传输专用资源通知源小区,包括:
目标小区通过X2接口,将分配的上行传输专用资源对应的第二资源信息通知源小区。
可选的,目标小区将分配的上行传输专用资源通知源小区,包括:
目标小区通过切换请求确认消息,将分配的上行传输专用资源通知源小区。
可选的,目标小区将分配的上行传输专用资源通知源小区之后,还包括:
目标小区在收到用户设备发送的RRC重配完成消息后,通过基于UE C-RNTI寻址的PDCCH,将用户设备在目标小区中的上行TA通知用户设备。
在下面的描述中,方法的执行主体源小区等同于管理源小区的网络侧设备。
如图19所示,本发明实施例第五种进行随机接入的方法包括:
步骤1900、源小区在用户设备需要进行切换后,向目标小区发送切换请求消息;
步骤1901、源小区将目标小区为用户设备分配上行传输专用资源通知给用户设备,以使用户设备通过上行传输专用资源接入目标小区。
可选的,源小区将目标小区为用户设备分配上行传输专用资源通知给用户设备,包括:
源小区通过包含移动性控制信息的RRC重配消息,将目标小区为用户设备分配上行传输专用资源通知给用户设备。
下面列举一个非竞争随机接入时延优化(切换情况)的例子。
如图20所示,本发明实施例非竞争随机接入的方法包括:
步骤1:目标小区(Target cell)接收到源小区(Source cell)发送的切换请求(HANDOVER REQUEST)消息后,为需要进行切换的UE分配随机接入上行传输专用资源,用于UE接入目标小区的第一次上行传输。
Target cell将用户确定随机接入上行传输专用资源的信息封装在切换请求确认(HANDOVER REQUEST ACKNOWLEDGE)消息中的目标基站到源基站的透明容器(Target eNB To Source eNB Transparent Container)中发送给Source cell。
步骤2:Source cell向UE发送包含移动性控制信息的RRC确认(RRC reconfiguration)消息,其中包含Target cell为UE分配的要接入目标小区使用的随机接入上行传输专用资源的信息。
步骤3:UE根据从Source cell接收到的RRC reconfiguration消息,确定消息中的信息对应的随机接入上行传输专用资源,并基于Target cell的下行定时,利用随机接上行传输专用资源向Target cell发送RRC配置成功(RRC reconfiguration complete)消息,以完成对目标小区的接入。
可选的,如果Target cell半径超过第二门限值,比如一个TA调整步长(78m),那么Target cell接收到UE发送的RRC reconfiguration complete消息后,利用基于UE C-RNTI寻址的PDCCH发送UE在Target cell上的上行TA。
从上述内容可以看出:本发明实施例随机接入过程中,用户设备通过随机接入专用竞争资源池中的资源向小区发送用户设备标识信息;若用户设备收到来自小区的竞争解决消息,根据竞争解决消息判断随机接入是否成功。本发明实施例非随机接入过程中,用户设备根据第二资源信息确定目标小区为用户设备分配的上行传输专用资源;通过上行传输专用资源接入目标小区。由于能够减少随机接入的交互过程,从而降低了随机接入的时延,能够应用在对时延要求比较严格的场景中。
显然,本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包含这些改动和变型在内。

Claims (38)

  1. 一种进行随机接入的方法,其特征在于,该方法包括:
    用户设备在接入小区时,确定随机接入专用竞争资源池;
    所述用户设备通过随机接入专用竞争资源池中的资源向小区发送用户设备标识信息;
    若所述用户设备收到来自小区的竞争解决消息,根据所述竞争解决消息判断随机接入是否成功。
  2. 如权利要求1所述的方法,其特征在于,所述用户设备在接入小区时,确定随机接入专用竞争资源池,包括:
    所述用户设备根据小区广播的第一资源信息,确定随机接入专用竞争资源池。
  3. 如权利要求2所述的方法,其特征在于,所述用户设备根据小区广播的第一资源信息,确定随机接入专用竞争资源池,包括:
    所述用户设备根据小区广播的第一资源信息,确定多个随机接入专用竞争资源池,从多个随机接入专用竞争资源池中选择一个随机接入专用竞争资源池。
  4. 如权利要求1所述的方法,其特征在于,所述用户设备通过随机接入专用竞争资源池中的资源向小区发送用户设备标识信息,包括:
    所述用户设备基于所述小区的下行定时,通过随机接入专用竞争资源池中的资源向小区发送用户设备标识信息。
  5. 如权利要求1所述的方法,其特征在于,若所述随机接入目的是用户设备初始接入或无线资源控制RRC连接重建,所述用户设备标识信息为公共控制信道业务数据单元CCCH SDU;或
    若所述随机接入目的是获得上行同步,所述用户设备标识信息为小区无线网络临时标识符媒体接入层控制单元C-RNTI MAC CE。
  6. 如权利要求5所述的方法,其特征在于,所述用户设备根据所述竞争解决消息判断随机接入是否成功,包括:
    若所述竞争解决消息中包括的CCCH SDU为发送给小区的CCCH SDU,则确定随机接入成功;否则,确定随机接入失败;
    若所述竞争解决消息中包括基于发送给小区的C-RNTI MAC CE寻址的PDCCH,则确定随机接入成功;否则,确定随机接入失败。
  7. 如权利要求1所述的方法,其特征在于,所述用户设备在接入小区时,确定随机接入专用竞争资源池之后,还包括:
    若确定的随机接入专用竞争资源池的容量大于第一门限值,所述用户设备向所述小区发送BSR信息和/或需要传输的部分或全部数据。
  8. 如权利要求1所述的方法,其特征在于,所述用户设备接收所述竞争解决消息,包括:
    若所述用户设备随机接入目的是初始接入或RRC连接重建,所述用户设备通过小区广播的第二资源信息对应的资源池,接收所述竞争解决消息,或通过CB-RNTI调度的资源,接收所述竞争解决消息;或
    若所述用户设备随机接入目的是获取上行同步,所述用户设备通过C-RNTI寻址的物理下行控制信道PDCCH调度的下行物理共享信道PDSCH资源,接收所述竞争解决消息。
  9. 如权利要求1~8任一所述的方法,其特征在于,该方法还包括:
    若所述用户设备在竞争解决时间窗内,未收到所述竞争解决消息,则随机等待一段时间后,重新选择随机接入专用竞争资源池并再次发起随机接入。
  10. 一种进行随机接入的方法,其特征在于,该方法包括:
    小区广播用于确定随机接入专用竞争资源池的第一资源信息;
    所述小区通过随机接入专用竞争资源池信息对应的随机接入专用竞争资源池,接收需要接入所述小区的用户设备发送的用户设备标识信息;
    所述小区在收到所述用户设备标识信息后,向所述用户设备发送竞争解决消息。
  11. 如权利要求10所述的方法,其特征在于,所述小区在收到所述用户设备标识信息后,还包括:
    若所述用户设备是初始接入或RRC连接建立,所述小区为所述用户设备分配C-RNTI。
  12. 如权利要求10所述的方法,其特征在于,所述小区在收到所述用户设备标识信息后,还包括:
    若所述小区半径大于第二门限值,所述小区为所述用户设备配置在所述小区中可用的上行TA。
  13. 如权利要求10所述的方法,其特征在于,若所述用户设备是初始接入或RRC连接建立,所述竞争解决消息中包括用户设备标识信息;
    若所述用户设备随机接入的目的是获取上行同步,所述竞争解决消息为针对所述用户设备的C-RNTI的包含初传上行链路调度UL grant的PDCCH调度信息。
  14. 如权利要求10~13任一所述的方法,其特征在于,所述小区向所述用户设备发送竞争解决消息,包括:
    若所述用户设备随机接入目的是初始接入或RRC连接重建,所述小区通过小区广播的第二资源信息对应的资源池,向所述用户设备发送竞争解决消息,或通过CB-RNTI调度的资源,向所述用户设备发送竞争解决消息;
    若所述用户设备随机接入目的是获取上行同步,所述小区通过C-RNTI寻址的PDCCH调度的PDSCH资源,向所述用户设备发送竞争解决消息。
  15. 一种进行随机接入的方法,其特征在于,该方法包括:
    需要进行切换的用户设备通过源小区获取第二资源信息;
    所述用户设备根据所述第二资源信息确定目标小区为所述用户设备分配的上行传输专用资源;
    所述用户设备通过所述上行传输专用资源接入所述目标小区。
  16. 如权利要求15所述的方法,其特征在于,所述用户设备通过源小区获取第二资源信息,包括:
    所述用户设备通过所述源小区发送的RRC重配消息,获取所述第二资源信息;
    所述用户设备通过所述上行传输专用资源接入所述目标小区,包括:
    所述用户设备通过所述上行传输专用资源向所述目标小区发送RRC重配完成消息。
  17. 一种进行随机接入的方法,其特征在于,该方法包括:
    目标小区为需要切换的用户设备分配上行传输专用资源;
    所述目标小区将分配的所述上行传输专用资源通知源小区,以使所述源小区将所述上行传输专用资源通知所述用户设备,并使所述用户设备通过所述上行传输专用资源接入所述目标小区。
  18. 如权利要求17所述的方法,其特征在于,所述目标小区为需要切换的用户设备分配上行传输专用资源之前,还包括:
    所述目标小区接收到来自所述源小区的切换请求消息。
  19. 如权利要求17所述的方法,其特征在于,所述目标小区将分配的所述上行传输专用资源通知源小区,包括:
    所述目标小区通过X2接口,将分配的所述上行传输专用资源对应的第二资源信息通知源小区。
  20. 如权利要求17所述的方法,其特征在于,所述目标小区将分配的所述上行传输专用资源通知源小区,包括:
    所述目标小区通过切换请求确认消息,将分配的所述上行传输专用资源通知源小区。
  21. 如权利要求17~20任一所述的方法,其特征在于,所述目标小区将分配的所述上行传输专用资源通知源小区之后,还包括:
    所述目标小区在收到所述用户设备发送的RRC重配完成消息后,通过基于UE C-RNTI寻址的PDCCH,将所述用户设备在目标小区中的上行TA通知所述用户设备。
  22. 一种进行随机接入的方法,其特征在于,该方法包括:
    源小区在用户设备需要进行切换后,向目标小区发送切换请求消息;
    所述源小区将目标小区为所述用户设备分配上行传输专用资源通知给所述用户设备,以使所述用户设备通过所述上行传输专用资源接入所述目标小区。
  23. 如权利要求22所述的方法,其特征在于,所述源小区将目标小区为所述用户设备分配上行传输专用资源通知给所述用户设备,包括:
    所述源小区通过包含移动性控制信息的RRC重配消息,将目标小区为所述用户设备分配上行传输专用资源通知给所述用户设备。
  24. 一种进行随机接入的用户设备,其特征在于,该用户设备包括:
    第一确定模块,用于在接入小区时,确定随机接入专用竞争资源池;
    第一发送模块,用于通过随机接入专用竞争资源池中的资源向小区发送用户设备标识信息;
    第一接入模块,用于若收到来自小区的竞争解决消息,根据所述竞争解决消息判断随机接入是否成功。
  25. 如权利要求24所述的用户设备,其特征在于,所述第一确定模块具体用于:
    根据小区广播的第一资源信息,确定随机接入专用竞争资源池。
  26. 如权利要求25所述的用户设备,其特征在于,所述第一确定模块具体用于:
    根据小区广播的第一资源信息,确定多个随机接入专用竞争资源池,从多个随机接入专用竞争资源池中选择一个随机接入专用竞争资源池。
  27. 如权利要求24所述的用户设备,其特征在于,所述第一发送模块具体用于:
    基于所述小区的下行定时,通过随机接入专用竞争资源池中的资源向小区发送用户设备标识信息。
  28. 如权利要求24所述的用户设备,其特征在于,若所述随机接入目的是用户设备初始接入或RRC连接重建,所述用户设备标识信息为CCCH SDU;或
    若所述随机接入目的是获得上行同步,所述用户设备标识信息为C-RNTI MAC CE。
  29. 如权利要求26所述的用户设备,其特征在于,所述第一接入模块具体用于:
    若所述竞争解决消息中包括的CCCH SDU为发送给小区的CCCH SDU,则确定随机接入成功;否则,确定随机接入失败;
    若所述竞争解决消息中包括基于发送给小区的C-RNTI MAC CE寻址的PDCCH,则确定随机接入成功;否则,确定随机接入失败。
  30. 如权利要求24所述的用户设备,其特征在于,所述第一发送模块具体用于:
    在接入小区时,确定随机接入专用竞争资源池之后,若确定的随机接入专用竞争资源池的容量大于第一门限值,向所述小区发送BSR信息和/或需要传输的部分或全部数据。
  31. 如权利要求24所述的用户设备,其特征在于,所述第一接入模块具体用于:
    若所述用户设备随机接入目的是初始接入或RRC连接重建,通过小区广播的第二资源信息对应的资源池,接收所述竞争解决消息,或通过CB-RNTI调度的资源,接收所述竞争解决消息;或
    若所述用户设备随机接入目的是获取上行同步,通过C-RNTI寻址的PDCCH调度的PDSCH资源,接收所述竞争解决消息。
  32. 如权利要求24~31任一所述的用户设备,其特征在于,所述第一接入模块还用于:
    若所述用户设备在竞争解决时间窗内,未收到所述竞争解决消息,则随机等待一段时间后,触发第一确定模块重新选择随机接入专用竞争资源池并再次发起随机接入。
  33. 一种进行随机接入的网络侧设备,其特征在于,该网络侧设备包括:
    广播模块,用于广播用于确定随机接入专用竞争资源池的第一资源信息;
    第一接收模块,用于通过随机接入专用竞争资源池信息对应的随机接入专用竞争资源池,接收需要接入所述网络侧设备管理的小区的用户设备发送的用户设备标识信息;
    第一传输模块,用于在收到所述用户设备标识信息后,向所述用户设备发送竞争解决消息。
  34. 如权利要求33所述的网络侧设备,其特征在于,若所述用户设备是初始接入或RRC连接建立,所述竞争解决消息中包括用户设备标识信息;
    若所述用户设备随机接入的目的是获取上行同步,所述竞争解决消息为针对所述用户设备的C-RNTI的包含初传UL grant的PDCCH调度信息。
  35. 如权利要求33或34所述的网络侧设备,其特征在于,所述第一传输模块具体用于:
    若所述用户设备随机接入目的是初始接入或RRC连接重建,通过小区广播的第二资源信息对应的资源池,向所述用户设备发送竞争解决消息,或通过CB-RNTI调度的资源,向所述用户设备发送竞争解决消息;
    若所述用户设备随机接入目的是获取上行同步,通过C-RNTI寻址的PDCCH调度的PDSCH资源,向所述用户设备发送竞争解决消息。
  36. 一种进行随机接入的用户设备,其特征在于,该用户设备包括:
    获取模块,用于在需要进行切换时通过源小区获取第二资源信息;
    第二确定模块,用于根据所述第二资源信息确定目标小区为所述用户设备分配的上行传输专用资源;
    第二接入模块,用于通过所述上行传输专用资源接入所述目标小区。
  37. 一种进行随机接入的目标网络侧设备,其特征在于,该目标网络侧设备包括:
    分配模块,用于为需要切换的用户设备分配上行传输专用资源;
    第二传输模块,用于将分配的所述上行传输专用资源通知源小区,以使所述源小区将所述上行传输专用资源通知所述用户设备,并使所述用户设备通过所述上行传输专用资源接入所述目标小区。
  38. 一种进行随机接入的源网络侧设备,其特征在于,该源网络侧设备包括:
    第三传输模块,用于在用户设备需要进行切换后,向目标小区发送切换请求消息;
    第四传输模块,用于将目标小区为所述用户设备分配上行传输专用资源通知给所述用户设备,以使所述用户设备通过所述上行传输专用资源接入所述目标小区。
PCT/CN2016/076985 2015-06-09 2016-03-22 一种进行随机接入的方法和设备 WO2016197656A1 (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US15/580,551 US10785808B2 (en) 2015-06-09 2016-03-22 Random access method and equipment
EP16806554.8A EP3310113B1 (en) 2015-06-09 2016-03-22 Random access methods
EP22203446.4A EP4149199A1 (en) 2015-06-09 2016-03-22 Random access method and equipment

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510312744.1A CN106255223B (zh) 2015-06-09 2015-06-09 一种进行随机接入的方法和设备
CN201510312744.1 2015-06-09

Publications (1)

Publication Number Publication Date
WO2016197656A1 true WO2016197656A1 (zh) 2016-12-15

Family

ID=57504508

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/076985 WO2016197656A1 (zh) 2015-06-09 2016-03-22 一种进行随机接入的方法和设备

Country Status (4)

Country Link
US (1) US10785808B2 (zh)
EP (2) EP4149199A1 (zh)
CN (1) CN106255223B (zh)
WO (1) WO2016197656A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018160262A1 (en) * 2017-03-03 2018-09-07 Qualcomm Incorporated Random access request regulation techniques for wireless stations
CN110611960A (zh) * 2018-06-14 2019-12-24 华为技术有限公司 一种接入方法及设备

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108260209B (zh) * 2016-12-28 2020-08-11 上海朗帛通信技术有限公司 一种用于随机接入的ue、基站中的方法和装置
CN109413756B (zh) * 2017-08-18 2020-11-03 维沃移动通信有限公司 一种随机接入方法及装置
CN113596941A (zh) * 2017-09-17 2021-11-02 上海朗帛通信技术有限公司 一种被用于无线通信的用户设备、基站中的方法和装置
CN109698737B (zh) * 2017-10-20 2021-05-25 普天信息技术有限公司 一种随机接入信道的规划方法及装置
CN110247743B (zh) * 2018-03-08 2021-11-19 中国移动通信有限公司研究院 一种随机接入方法及装置、设备、存储介质
US11438924B2 (en) 2018-05-18 2022-09-06 Beijing Xiaomi Mobile Software Co., Ltd. Message sending methods and apparatuses, and resource allocating methods and apparatuses
CN112385282A (zh) * 2018-06-29 2021-02-19 上海诺基亚贝尔股份有限公司 随机接入过程期间的上行链路跳过
WO2020107459A1 (zh) * 2018-11-30 2020-06-04 华为技术有限公司 一种下行信号接收方法、终端及源基站
CN112584496B (zh) * 2019-09-27 2023-06-30 维沃移动通信有限公司 一种资源使用方法及通信设备
CN113518467B (zh) * 2020-04-10 2024-04-16 大唐移动通信设备有限公司 数据传输方法、装置及终端
CN117979256A (zh) * 2020-07-03 2024-05-03 中信科智联科技有限公司 一种接入方法、装置、终端节点及管理节点
CN112804706B (zh) * 2020-12-31 2022-07-26 联想未来通信科技(重庆)有限公司 一种通信链路检测方法及装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103533663A (zh) * 2013-09-27 2014-01-22 电信科学技术研究院 随机接入方法及其设备
CN104469949A (zh) * 2013-09-23 2015-03-25 中国移动通信集团公司 无线网络中的保活方法、装置及系统

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102342145A (zh) * 2009-03-20 2012-02-01 瑞典爱立信有限公司 用于监控随机接入信道的方法和装置
EP2484167B1 (en) * 2009-10-02 2014-03-05 Nokia Solutions and Networks Oy Resource setting control for transmission using contention based resources
US9515696B2 (en) * 2012-03-16 2016-12-06 Interdigital Patent Holdings, Inc. Method for half-duplex FDD operation in LTE FDD network
US9807800B2 (en) * 2012-10-08 2017-10-31 Mediatek Singapore Pte. Ltd. Data transmission method
US20160057783A1 (en) * 2013-03-26 2016-02-25 Nokia Solutions And Networks Oy Mechanism for Providing Communication Resources for Random Access of a User
US20160037402A1 (en) * 2013-03-26 2016-02-04 Nokia Solutions And Networks Oy Mechanism for a Fast Handover Using Resource Pools and Random Access Procedure
US10178703B2 (en) 2013-05-09 2019-01-08 Blackberry Limited Stopping a random access procedure
US9313698B2 (en) * 2013-10-11 2016-04-12 Blackberry Limited Method and apparatus for handover in heterogeneous cellular networks
US9980293B2 (en) 2014-02-06 2018-05-22 Telefonaktiebolaget Lm Ericsson (Publ) Random access procedure
US9769644B2 (en) * 2014-03-14 2017-09-19 Intel IP Corporation Systems, methods, and devices for device-to-device communication mode selection
US9253692B1 (en) * 2014-04-22 2016-02-02 Sprint Spectrum L.P. Reuse of identifiers for contention-free random access requests to a network
EP3138361B1 (en) * 2014-05-02 2023-06-14 Sharp Kabushiki Kaisha A mechanism of resource-pool configurations for device-to-device communication
CN107211470B (zh) * 2014-09-26 2021-01-22 太阳专利信托公司 设备到设备(d2d)通信的改善资源分配
US10440670B2 (en) * 2014-12-29 2019-10-08 Lg Electronics Inc. Method for performance device-to-device communication in wireless communication system and apparatus therefor
EP3248426B1 (en) * 2015-01-23 2020-07-22 LG Electronics Inc. Method for selecting of sidelink grant for a d2d ue in a d2d communication system and device therefor
WO2016190641A1 (ko) * 2015-05-22 2016-12-01 엘지전자(주) 무선 통신 시스템에서 데이터 송수신 방법 및 이를 위한 장치

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104469949A (zh) * 2013-09-23 2015-03-25 中国移动通信集团公司 无线网络中的保活方法、装置及系统
CN103533663A (zh) * 2013-09-27 2014-01-22 电信科学技术研究院 随机接入方法及其设备

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
3GPP;: "Random Access And UL Sync Considerations and Discussion Of L1 Questions From Ran2", TSG RAN WG1 MEETING#44 R1-060560, 17 February 2006 (2006-02-17), XP050101496 *
3GPP;: "Random Access Transmission For Scalable Multiple Bandwidths In Evolved Utra Uplink", TSG-RAN WG1 #43 R1-051391, 11 November 2005 (2005-11-11), XP050100983 *
See also references of EP3310113A4 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018160262A1 (en) * 2017-03-03 2018-09-07 Qualcomm Incorporated Random access request regulation techniques for wireless stations
CN110611960A (zh) * 2018-06-14 2019-12-24 华为技术有限公司 一种接入方法及设备

Also Published As

Publication number Publication date
US10785808B2 (en) 2020-09-22
EP3310113A1 (en) 2018-04-18
EP3310113A4 (en) 2018-10-24
EP3310113B1 (en) 2022-12-07
CN106255223B (zh) 2020-10-09
CN106255223A (zh) 2016-12-21
EP4149199A1 (en) 2023-03-15
US20200037371A1 (en) 2020-01-30

Similar Documents

Publication Publication Date Title
WO2016197656A1 (zh) 一种进行随机接入的方法和设备
TWI676400B (zh) 一種進行隨機存取的方法和設備
EP2836050B1 (en) Method, device and network for radio network temporary identifier allocation in dual connectivity
WO2017028756A1 (zh) 一种随机接入响应的传输方法及装置
RU2737868C1 (ru) Устройство беспроводной связи и способ передачи обслуживания в новом радио, основанной на управляемом сетью луче
CA2886468C (en) Resource reconfiguration method, base station, and user equipment
EP2997764A1 (en) A wireless device, network nodes and methods therein for handling a device-to-device (d2d) communication during handover in a wireless telecommunications network
JP2022141785A (ja) 無線ネットワークに対するオンデマンドシステム情報取得時における待ち時間の使用
US11818650B2 (en) Mobile telecommunications system method, user equipment and base station for transmitting on demand system information
US10462827B2 (en) Random access method and apparatus
US10477551B2 (en) Uplink data transmission resource allocation method and apparatus using load balancing
CN110582089B (zh) 系统信息发送的方法以及用户设备
JP2017514382A (ja) 移動通信システムでの端末のハンドオーバー方法及び装置
JP2022120025A (ja) 通信制御方法
US9807654B2 (en) Mobility in heterogeneous network environments
WO2016180107A1 (zh) 发送超低时延传输信息的方法、装置及系统
KR102449111B1 (ko) 액세스 제어 방법 및 관련 제품
WO2018024029A1 (zh) 一种进行随机接入的方法和设备
KR20220004135A (ko) 랜덤 액세스 방법 및 장치
WO2013097656A1 (zh) 随机接入发起、随机接入资源的通知方法及主基站
RU2791244C1 (ru) Способ и устройство произвольного доступа
WO2016078034A1 (zh) 一种传输消息的方法、用户设备、基站和系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16806554

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2016806554

Country of ref document: EP