WO2017124226A1 - 一种随机接入方法及装置 - Google Patents

一种随机接入方法及装置 Download PDF

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Publication number
WO2017124226A1
WO2017124226A1 PCT/CN2016/071206 CN2016071206W WO2017124226A1 WO 2017124226 A1 WO2017124226 A1 WO 2017124226A1 CN 2016071206 W CN2016071206 W CN 2016071206W WO 2017124226 A1 WO2017124226 A1 WO 2017124226A1
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Prior art keywords
cell
information
virtual
physical
physical cell
Prior art date
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PCT/CN2016/071206
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English (en)
French (fr)
Inventor
李国荣
张莉莉
Original Assignee
华为技术有限公司
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.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201680067308.5A priority Critical patent/CN108293189A/zh
Priority to EP16885499.0A priority patent/EP3346742B1/en
Priority to PCT/CN2016/071206 priority patent/WO2017124226A1/zh
Priority to US15/767,265 priority patent/US10820351B2/en
Publication of WO2017124226A1 publication Critical patent/WO2017124226A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/32—Hierarchical cell structures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

Definitions

  • the present invention relates to the field of mobile communications technologies, and in particular, to a random access method and apparatus.
  • Ultra Dense Network In the Ultra Dense Network (UDN) system, as the density of cells in the network increases, the mobility management of users in ultra-dense networks becomes extremely severe. How to avoid frequent cell selection and cell reselection in an ultra-dense network and how to avoid frequent switching of users in a super-dense network in an ultra-dense network need to be solved. Virtual layer technology can effectively control channel interference and mobility issues.
  • a single-layer physical cell constructs a two-layer network: a virtual macro cell and a physical micro cell.
  • the micro base station in the ultra-dense network may be divided into several clusters, and each cluster may separately construct a virtual layer.
  • the network configures one virtual physical cell identifier for each cluster, namely VPCI (Virtual PCI).
  • the micro base stations in the same cluster simultaneously transmit the virtual layer reference signal VRS (Virtual Reference Signal), and the VRSs sent by different clusters are different; the micro base stations in the same cluster simultaneously transmit broadcast information, paging information, random access response, and common control signaling. And use VPCI scrambling.
  • VRS Virtual Reference Signal
  • the traditional physical cell constitutes a physical layer, and the network configures one physical cell identifier PCI for each physical area.
  • the idle state user resides in the virtual layer and listens to the information sent by the micro cluster, including VRS, broadcast information, paging information, common control signaling, and uses VPCI to solve broadcast information, paging information, and common control signaling. Disturb.
  • the idle state user does not need to identify the physical layer, and cell reselection does not occur when moving within the same cluster.
  • the solution adopted by the prior art is still that the terminal acquires system information of the physical cell from the physical cell, and sends random access to the micro base station of the physical cell according to the system information of the physical cell. The request and the access are performed.
  • the manner of obtaining the information of the entity cell may generate some delay, and the physical cell carries the data transmission, and the resources are also relatively tight.
  • the embodiment of the invention provides a random access method and device, which uses the virtual frequency to transmit and receive information of the physical cell, fully utilizes idle resources of the virtual frequency, and reduces the delay.
  • a first aspect of the present invention provides a random access method, including:
  • the terminal receives virtual cell information by using a virtual frequency, where the virtual cell information includes information of at least one physical cell indicated by the virtual cell;
  • the terminal accesses the target entity cell by using information of the target entity cell.
  • the virtual cell information is virtual cell system information, and the at least one physical cell includes all physical cells under the virtual cell coverage,
  • the information of the physical cell includes random access information of the physical cell, or the information of the physical cell includes capability information of the physical cell and random access information of the physical cell;
  • the capability information includes any one or more of the following information:
  • the load information of the physical cell The load information of the physical cell, the multi-connection capability of the physical cell, the multiple-input multiple-output MIMO capability of the physical cell, the MBMS service support of the multimedia broadcast multicast service of the physical cell, and the minimum road test of the physical cell Support MDT, device-to-device D2D capability of the physical cell, new carrier type of the physical cell, or support of an extended carrier.
  • the information about the physical cell includes capability information of the physical cell and random access of the physical cell information
  • the method further includes:
  • the terminal searches for at least one candidate entity cell currently located
  • the terminal accesses the target entity cell by using the information of the target entity cell, including:
  • the terminal reads random access information of the target entity cell from the virtual cell system information, and accesses the target entity cell by using random access information of the target entity cell.
  • the virtual cell system information is in a physical state of the virtual cell
  • the broadcast channel PBCH and the bearer broadcast channel BCH are transmitted.
  • the terminal before the terminal uses the virtual frequency to receive the virtual cell information, the terminal further includes:
  • the terminal sends a random access request to the virtual cell by using the virtual frequency to trigger the virtual cell to use the virtual cell information to indicate information about a physical cell to the terminal according to the random access request, where the entity
  • the information of the cell is the frequency information of the physical cell, and the frequency information of the physical cell includes an uplink frequency of the physical cell and a downlink frequency of the physical cell;
  • the terminal accesses the target entity cell by using the information of the target entity cell, including:
  • the terminal accesses the target entity cell by using frequency information of the physical cell in the virtual cell information.
  • the physical cell in the virtual cell information is at least received from the random access request a physical cell corresponding to a micro base station selected by a micro base station that satisfies a preset condition;
  • the preset condition includes: the received signal quality meets a preset threshold; and if the received signal quality of the plurality of micro base stations satisfies the preset threshold, the micro base station with the smallest load is selected.
  • a second aspect of the present invention provides a random access apparatus, including:
  • a receiving module configured to receive virtual cell information by using a virtual frequency, where the virtual cell information includes information of at least one physical cell indicated by the virtual cell;
  • a determining module configured to determine, according to information of the at least one physical cell, a target entity cell that is pre-accessed
  • An access module configured to access the target entity cell by using information about the target entity cell.
  • the virtual cell information is virtual cell system information, and the at least one physical cell includes all physical cells under the virtual cell coverage,
  • the information of the physical cell includes random access information of the physical cell, or the information of the physical cell includes capability information of the physical cell and random access information of the physical cell;
  • the capability information includes any one or more of the following information:
  • the load information of the physical cell The load information of the physical cell, the multi-connection capability of the physical cell, the multiple-input multiple-output MIMO capability of the physical cell, the MBMS service support of the multimedia broadcast multicast service of the physical cell, and the minimum road test of the physical cell Support MDT, device-to-device D2D capability of the physical cell, new carrier type of the physical cell, or support of an extended carrier.
  • the information about the physical cell includes capability information of the physical cell and random access of the physical cell Information; the device further includes:
  • a search module configured to search for at least one candidate entity cell where the terminal is currently located
  • the determining module includes an obtaining unit and a determining unit
  • the acquiring unit is configured to acquire capability information of each candidate entity cell in the at least one candidate entity cell from the virtual cell system information;
  • the determining unit is configured to select, according to capability information of each candidate entity cell, an entity cell that is adapted to the capability or service characteristic of the terminal, and adapt the capability or service characteristic of the terminal to the terminal
  • the physical cell is determined to be a target entity cell for pre-access
  • the access module is specifically configured to read random access information of the target entity cell from the virtual cell system information, and access the target physical cell by using random access information of the target entity cell.
  • the virtual cell system information is in a physical state of the virtual cell
  • the broadcast channel PBCH and the bearer broadcast channel BCH are transmitted.
  • the device further includes:
  • a sending module configured to send a random access request to the virtual cell by using the virtual frequency, to trigger the virtual cell to use the virtual cell information to indicate to the terminal according to the random access request.
  • Information of a physical cell where the information of the physical cell is frequency information of the physical cell, and the frequency information of the physical cell includes an uplink frequency of the physical cell and a downlink frequency of the physical cell;
  • the determining module is specifically configured to determine a physical cell indicated by the virtual cell information as a target entity cell that is pre-accessed;
  • the access module is specifically configured to access the target entity cell by using frequency information of the physical cell in the virtual cell information.
  • the physical cell in the virtual cell information is at least one micro from receiving the random access request a physical cell corresponding to the micro base station selected by the base station that meets the preset condition;
  • the preset condition includes: the received signal quality meets a preset threshold; and if the received signal quality of the plurality of micro base stations satisfies the preset threshold, the micro base station with the smallest load is selected.
  • the terminal uses the virtual frequency to receive the virtual cell information, where the virtual cell information includes information of the at least one physical cell indicated by the virtual cell, and the terminal determines the target entity cell that is pre-accessed according to the information of the at least one physical cell.
  • the terminal accesses the target entity cell by using the information of the target entity cell. In this manner, the information of the physical cell is transmitted and received by using a virtual frequency, and the idle resource of the virtual frequency is fully utilized to reduce the delay of the terminal accessing the target entity cell.
  • FIG. 1 is a schematic diagram of a virtual cell architecture according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a random access method according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart diagram of another random access method according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic flowchart diagram of still another random access method according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic diagram of terminal interaction according to an embodiment of the present invention.
  • FIG. 6 is another terminal interaction diagram according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a random access device according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of another random access device according to an embodiment of the present invention.
  • the random access method in this embodiment includes:
  • the terminal receives virtual cell information by using a virtual frequency, where the virtual cell information includes information about at least one physical cell indicated by the virtual cell.
  • the random access method provided by the embodiment of the present invention mainly solves the random access problem in the virtual cell scenario of the physical cell, as shown in FIG. 1 , which is a system architecture diagram applied by the random access method of the present invention.
  • a virtual multi-layer network is constructed from a single-layer physical network.
  • a single-layer physical cell constructs a two-layer network: a virtual macro cell and a physical micro cell.
  • the virtual macro cell carries control signaling and is responsible for mobility management; the entity micro cell carries data transmission.
  • the virtual cell has a primary transmission point as a radio resource control protocol (RRC) link retention point.
  • the RRC link hold point may be a virtual layer transceiver control signaling. It should be noted that data is transmitted and received between the terminal UE and the RRC link holding point through a virtual frequency.
  • the second architecture is that all the physical cells are flat, and the control signaling sent and received by the virtual layer is sent by any one or more sampling virtual frequencies of the micro base stations of all the physical cells, and it should be noted that each physical cell
  • the micro-base station can use the virtual frequency to send and receive information, and can also use the physical frequency to transmit and receive information.
  • the information transmitted and received by the virtual frequency is the control signaling
  • the information sent and received by the physical frequency is the interaction data.
  • the virtual cell information in the embodiment of the present invention is A kind of control signaling, so the virtual frequency is used for transmitting and receiving.
  • the idle state user terminal resides in the virtual layer.
  • the virtual cell receives virtual cell information, where the virtual cell information includes information of at least one physical cell indicated by the virtual cell.
  • the virtual cell information may be virtual cell system information (Virtual The system information (VSI)
  • the information of the physical cell in the virtual cell information may be the SI of each physical cell, and further optionally, the SI may include random access information of the physical cell and used to indicate the physical cell Capability information for various capabilities that are supported.
  • the virtual cell information may also be frequency information of the physical cell selected by the virtual cell according to the received signal quality of the terminal, and the frequency information may include an uplink frequency and a downlink frequency.
  • the terminal determines, according to information about the at least one physical cell, a target entity cell that is pre-accessed;
  • the terminal determines the target entity cell that is pre-accessed according to the information of the at least one entity cell indicated by the virtual cell information. Generally, if the information of the multiple entity cells is included in the virtual cell information, the information of the entity cell is required. And the terminal's own capabilities or services are selected, and finally the most suitable target entity cell is selected.
  • multi-carrier load balancing (or intelligent offloading) is a factor to be considered.
  • the UE resides in the physical cell that can best adapt to the UE capability or service while considering the carrier load of each physical cell to meet the requirements of the UE.
  • the UE For example, if the UE expects to perform dual connectivity operation and the carrier of one physical cell cannot cooperate with other carriers to provide dual connectivity to the UE, the UE must be switched to other carriers supporting dual connectivity to perform dual connectivity operations, which causes unnecessary The handover signaling and the delay, in this embodiment, when the UE performs random access, that is, considering the carrier condition of each physical cell, thereby camping on the most suitable target entity cell. For another example, the UE has a higher multiple input multiple output (MIMO) capability. If one carrier cannot support this MIMO capability, the UE is not expected to be connected to this carrier.
  • MIMO multiple input multiple output
  • the terminal may directly The physical cell is determined as the target entity cell of the pre-access. Further, the information of the physical cell in the virtual cell information is the uplink frequency and the downlink frequency of the physical cell.
  • the terminal accesses the target entity cell by using information about the target entity cell.
  • the information of the target entity cell in the virtual cell information is used to access the target entity cell.
  • the specific access method may be The micro base station of the physical cell sends a random access request, and after receiving the random access request, the micro base station returns a random access response, and further establishes a wireless control link.
  • the terminal uses the virtual frequency to receive the virtual cell information, where the virtual cell information includes information of the at least one physical cell indicated by the virtual cell, and the terminal determines the target entity cell that is pre-accessed according to the information of the at least one physical cell.
  • the terminal accesses the target entity cell by using the information of the target entity cell. In this manner, the information of the physical cell is transmitted and received by using a virtual frequency, and the idle resource of the virtual frequency is fully utilized to reduce the delay of the terminal accessing the target entity cell.
  • FIG. 3 is a schematic flowchart of another random access method according to an embodiment of the present invention. As shown in the figure, the random access method in this embodiment includes:
  • the terminal receives virtual cell information by using a virtual frequency, where the virtual cell information includes information of at least one physical cell indicated by the virtual cell.
  • the virtual cell information is virtual cell system information, where the at least one physical cell includes all physical cells under the coverage of the virtual cell, and the information of the physical cell includes random access information of the physical cell, or the entity
  • the information of the cell includes capability information of the physical cell and random access information of the physical cell;
  • the capability information includes any one or more of the following information:
  • the load information of the physical cell The load information of the physical cell, the multi-connection capability of the physical cell, the multiple-input multiple-output MIMO capability of the physical cell, and the Multimedia Broadcast Multicast Service (MBMS) service support of the physical cell,
  • the minimum cell test support Minimization of Drive Tests, MDT
  • MDT Minimum of Drive Tests, MDT
  • MDT Device-to-device D2D capability of the physical cell
  • new carrier type of the physical cell or the support of an extended carrier.
  • the virtual cell system information includes system information (SI) of all the physical cells below it.
  • SI system information
  • the SI broadcast entity cell SI only the SI corresponding to the physical cell random access is generally used. For example, random access information is broadcast, and some compression and grouping operations can be performed on the information to further reduce overhead. Since the virtual frequency of the virtual cell does not participate in the transmission of user data, there are relatively sufficient resources to transmit control signaling of other cells, such as virtual cell system information VSI.
  • some other information of the physical cell may also be broadcast in the VSI to let the UE determine which target entity cell should be accessed.
  • the VSI of the virtual cell includes an MIB and an SIB
  • the VSI may be sent on a Broadcast Channel (BCH) and a Physical Broadcast Channel (PBCH) of the virtual cell
  • the UE provides a BCH and a PBCH to acquire the VSI.
  • BCH Broadcast Channel
  • PBCH Physical Broadcast Channel
  • the period of the VSI may be larger, because the VSI is only for reducing the cell reselection overhead of the UE, and is not as frequent as the SI of the physical cell, and the VSI includes virtual cell information, common channel configuration, neighbor virtual cell information, and physical cell information. There may be more content, so the transmission period will be larger, and the BCH/PBCH period of the virtual cell may be larger than the current LTE period.
  • This embodiment is different from the traditional system in transmitting a SIB in a Physical Downlink Shared Channel (PDSCH).
  • PDSCH Physical Downlink Shared Channel
  • the terminal searches for at least one candidate entity cell that is currently located.
  • the UE when the UE needs to perform random access, the UE searches for at least one candidate entity cell that is currently located, that is, the UE is in an overlapping area of at least one candidate entity cell. It should be noted that, when the terminal UE searches for the candidate entity cell, the downlink frequency of the candidate entity cell may be obtained regardless of whether the inter-frequency or inter-frequency is used.
  • the terminal acquires capability information of each candidate entity cell in the at least one candidate entity cell from the virtual cell system information.
  • the UE obtains capability information of each candidate entity cell in the at least one candidate entity cell from the VSI, and the capability information may indicate the capability supported by the entity cell, so that the terminal UE may according to each candidate.
  • the capability information of the physical cell selects the target entity cell that best matches the UE capability or service.
  • the terminal selects, according to capability information of each candidate entity cell, an entity cell that is adapted to the capability or service feature of the terminal, and the entity that is adapted to the capability or service feature of the terminal.
  • the cell is determined to be a target entity cell that is pre-accessed;
  • the UE side further selects a carrier and a physical cell that match the capabilities or service characteristics of the terminal according to the capability information of each candidate entity cell, such as multi-connection/MBMS/MDT/MIMO/D2D capability, UE level, UE. Receiver capabilities and more.
  • the terminal UE determines the physical cell that matches the capability or service characteristic of the terminal as the target entity cell for pre-access.
  • the UE completes a random access procedure in the target entity cell.
  • the terminal UE may further refer to the load information of each physical cell to select a physical cell with the smallest load when selecting a physical cell that meets its capability or service characteristics.
  • S304 The terminal reads random access information of the target entity cell from the virtual cell system information, and accesses the target entity cell by using random access information of the target entity cell.
  • the VSI includes the SI of each physical cell, and the SI carries the random access information of the physical cell, and the UE reads the random access information carried in the SI of the target entity cell from the VSI, and uses the random access information. The random access information is accessed to the target entity cell.
  • the terminal may also acquire the SI (random access information) of the candidate entity cell from the physical cell, so as to access the physical cell by using random access information.
  • SI random access information
  • the terminal uses the virtual frequency to receive the virtual cell information, where the virtual cell information includes information of the at least one physical cell indicated by the virtual cell, and the terminal determines the target entity cell that is pre-accessed according to the information of the at least one physical cell.
  • the terminal accesses the target entity cell by using the information of the target entity cell. In this manner, the information of the physical cell is transmitted and received by using a virtual frequency, and the idle resource of the virtual frequency is fully utilized to reduce the delay of the terminal accessing the target entity cell.
  • FIG. 4 is a schematic flowchart of still another method for random access according to an embodiment of the present invention. As shown in the figure, the random access method in this embodiment includes:
  • the terminal sends a random access request to the virtual cell by using the virtual frequency, to trigger the virtual cell to use the virtual cell information to indicate information about a physical cell to the terminal according to the random access request.
  • the information about the physical cell is frequency information of the physical cell, and the frequency information of the physical cell includes an uplink frequency of the physical cell and a downlink frequency of the physical cell;
  • the virtual frequency is used to send a random access request to the virtual cell
  • the virtual cell may comprehensively consider receiving at least one of the random access requests according to the random access request.
  • the system architecture includes a primary transmission point
  • the primary transmission point is selected. If all the physical cells are flat, the information is exchanged and determined by the base stations.
  • the real The information of the body cell includes frequency information of the entity cell, and the frequency information includes an uplink frequency and a downlink frequency.
  • the UE considers that the physical cell has the same uplink UL frequency and downlink DL frequency as the virtual cell.
  • the terminal receives virtual cell information by using a virtual frequency, where the virtual cell information includes information of at least one physical cell indicated by the virtual cell.
  • the terminal determines, as the target entity cell that is pre-accessed, the physical cell indicated by the virtual cell information.
  • the UE receives the virtual cell information (the random access response that the base station feeds back to the random access request), and determines one physical cell indicated in the virtual cell information as the target entity cell that is pre-accessed, and The frequency information of the physical cell in the virtual cell information is determined as the uplink frequency and the downlink frequency of the target entity cell.
  • the virtual cell information the random access response that the base station feeds back to the random access request
  • the terminal accesses the target entity cell by using frequency information of the physical cell in the virtual cell information.
  • the UE sends a random access request on the uplink UL frequency of the physical cell indicated in the virtual cell information, and receives a random access response on the indicated downlink DL frequency of the physical cell, thereby accessing the target physical cell.
  • the terminal uses the virtual frequency to receive the virtual cell information, where the virtual cell information includes information of the at least one physical cell indicated by the virtual cell, and the terminal determines the target entity cell that is pre-accessed according to the information of the at least one physical cell.
  • the terminal accesses the target entity cell by using the information of the target entity cell. In this manner, the information of the physical cell is transmitted and received by using a virtual frequency, and the idle resource of the virtual frequency is fully utilized to reduce the delay of the terminal accessing the target entity cell.
  • the system architecture includes a virtual cell, a physical cell covered by the virtual cell, and a UE.
  • the virtual cell broadcasts a VSI, where the VSI includes an SI of each physical cell;
  • S2 The UE searches for a physical cell with the best downlink received signal quality
  • the UE acquires an SI of the physical cell from the received VSI.
  • the UE accesses the physical cell by using the obtained SI of the physical cell.
  • FIG. 6 is another terminal interaction diagram according to an embodiment of the present invention.
  • the system architecture includes a virtual cell, a physical cell 1 and a physical cell 2 covered by the virtual cell, and a UE.
  • the UE determines to randomly access the physical cell, and performs cell search
  • the UE searches for several physical cells, such as the physical cell 1 and the physical cell 2;
  • the virtual cell broadcasts a VSI, where the VSI includes system information and other capability information of each physical cell.
  • the UE acquires system information and capability information of the entity cell 1 and the entity cell 2 from the VSI.
  • S5 The UE compares the capability information of the physical cell 1 and the physical cell 2, and finally selects that the physical cell 2 meets the UE standard and has the smallest load, and can match the service or capability of the UE.
  • S6 The UE and the physical cell 2 access the physical cell 2 by transmitting and receiving random access information.
  • FIG. 7 is a schematic structural diagram of a random access device according to an embodiment of the present invention. As shown in the figure, the random access device of the embodiment includes:
  • the receiving module 100 is configured to receive virtual cell information by using a virtual frequency, where the virtual cell information includes information of at least one physical cell indicated by the virtual cell;
  • the virtual cell information may be virtual system information (VSI), and the information of the physical cell in the virtual cell information may be an SI of each physical cell, and further optionally, the SI may include the Random access information of the physical cell and capability information indicating various capability services supported by the physical cell.
  • VSI virtual system information
  • SI may include the Random access information of the physical cell and capability information indicating various capability services supported by the physical cell.
  • the virtual cell information may also be frequency information of the physical cell selected by the virtual cell according to the received signal quality of the terminal, and the frequency information may include an uplink frequency and a downlink frequency.
  • a determining module 101 configured to determine, according to information about the at least one physical cell, a target entity cell that is pre-accessed;
  • the virtual cell information includes information of multiple physical cells, it is necessary to select according to the information of the physical cell and the capabilities or services of the terminal itself, and finally select the most suitable target physical cell.
  • the virtual cell information includes information about a physical cell indicated by the virtual cell, and the physical cell is a virtual cell
  • the load and/or the received signal quality of each physical cell is determined.
  • the terminal may directly determine the physical cell as the target entity cell for pre-access.
  • the information of the entity cell in the virtual cell information is the uplink frequency and the downlink frequency of the physical cell.
  • the access module 102 is configured to access the target entity cell by using information about the target entity cell.
  • the virtual cell information is virtual cell system information, where the at least one physical cell includes all the physical cells under the coverage of the virtual cell, and the information of the physical cell includes random access information of the physical cell, where Or the information about the physical cell includes capability information of the physical cell and random access information of the physical cell;
  • the capability information includes any one or more of the following information:
  • the load information of the physical cell The load information of the physical cell, the multi-connection capability of the physical cell, the multiple-input multiple-output MIMO capability of the physical cell, and the Multimedia Broadcast Multicast Service (MBMS) service support of the physical cell,
  • the minimum cell test support Minimization of Drive Tests, MDT
  • MDT Minimum of Drive Tests, MDT
  • MDT Device-to-device D2D capability of the physical cell
  • new carrier type of the physical cell or the support of an extended carrier.
  • the device may further include a search module 103;
  • the searching module 103 is configured to search for at least one candidate entity cell where the terminal is currently located;
  • the determining module 101 includes an obtaining unit and a determining unit
  • the acquiring unit is configured to acquire capability information of each candidate entity cell in the at least one candidate entity cell from the virtual cell system information;
  • the determining unit is configured to select, according to capability information of each candidate entity cell, an entity cell that is adapted to the capability or service characteristic of the terminal, and adapt the capability or service characteristic of the terminal to the terminal
  • the physical cell is determined to be a target entity cell for pre-access
  • the access module 102 is specifically configured to read random access information of the target entity cell from the virtual cell system information, and access the target entity cell by using random access information of the target entity cell.
  • the device may further include a sending module 104;
  • the sending module 104 is configured to send a random access request to the virtual cell by using the virtual frequency, to trigger the virtual cell to use virtual cell information to the terminal according to the random access request.
  • Information indicating a physical cell where the information of the physical cell is frequency information of the physical cell, and the frequency information of the physical cell includes an uplink frequency of the physical cell and a downlink frequency of the physical cell;
  • the virtual cell may consider, according to the random access request, a physical cell corresponding to the selected one of the at least one micro base station that receives the random access request and meets a preset condition; optionally, the virtual cell
  • the preset condition includes: the received signal quality meets the preset threshold; and if the received signal quality of the plurality of micro base stations satisfies the preset threshold, the micro base station with the smallest load is selected.
  • the determining module 101 is specifically configured to determine the physical cell indicated in the virtual cell information as a target entity cell that is pre-accessed;
  • the access module 102 is specifically configured to access the target entity cell by using frequency information of the physical cell in the virtual cell information.
  • the terminal uses the virtual frequency to receive the virtual cell information, where the virtual cell information includes information of the at least one physical cell indicated by the virtual cell, and the terminal determines the target entity cell that is pre-accessed according to the information of the at least one physical cell.
  • the terminal accesses the target entity cell by using the information of the target entity cell. In this manner, the information of the physical cell is transmitted and received by using a virtual frequency, and the idle resource of the virtual frequency is fully utilized to reduce the delay of the terminal accessing the target entity cell.
  • each module and each unit in the above random access device may be further referred to the related description in the method embodiment.
  • FIG. 8 is a schematic structural diagram of another random access device according to an embodiment of the present invention. As shown in the figure, the random access device of FIG. 8 can be used to implement various steps and methods in the foregoing method embodiments.
  • random access device 40 includes antenna 400, transmitter 401, receiver 402, processor 404, and memory 404.
  • Processor 404 controls the operation of random access device 40 and can be used to process signals.
  • Memory 404 can include read only memory and random access memory and provides instructions and data to processor 403.
  • Transmitter 401 and receiver 402 can be coupled to antenna 400, and various components of access station 40 are coupled together by bus system 405, which in addition to the data bus includes a power bus, a control bus, and a status signal bus. .
  • bus system 405 which in addition to the data bus includes a power bus, a control bus, and a status signal bus.
  • various buses are labeled as bus system 405 in the figure.
  • the above random access device may be included in the terminal.
  • memory 404 can store instructions that perform the following processes:
  • the terminal receives virtual cell information by using a virtual frequency, where the virtual cell information includes information of at least one physical cell indicated by the virtual cell;
  • the terminal accesses the target entity cell by using information of the target entity cell.
  • the virtual cell information is virtual cell system information, where the at least one physical cell includes all the physical cells under the coverage of the virtual cell, and the information of the physical cell includes random access information of the physical cell, where Or the information about the physical cell includes capability information of the physical cell and random access information of the physical cell;
  • the capability information includes any one or more of the following information:
  • the load information of the physical cell The load information of the physical cell, the multi-connection capability of the physical cell, the multiple-input multiple-output MIMO capability of the physical cell, the MBMS service support of the multimedia broadcast multicast service of the physical cell, and the minimum road test of the physical cell Support MDT, device-to-device D2D capability of the physical cell, new carrier type of the physical cell, or support of an extended carrier.
  • the information about the physical cell includes capability information of the physical cell and random access information of the physical cell;
  • the method further includes:
  • the terminal searches for at least one candidate entity cell currently located
  • the terminal accesses the target entity cell by using the information of the target entity cell, including:
  • the terminal reads random access information of the target entity cell from the virtual cell system information, and accesses the target entity cell by using random access information of the target entity cell.
  • the virtual cell system information is in a physical broadcast channel PBCH of the virtual cell.
  • the terminal before the terminal uses the virtual frequency to receive the virtual cell information, the terminal further includes:
  • the terminal sends a random access request to the virtual cell by using the virtual frequency to trigger the virtual cell to use the virtual cell information to indicate information about a physical cell to the terminal according to the random access request, where the entity
  • the information of the cell is the frequency information of the physical cell, and the frequency information of the physical cell includes an uplink frequency of the physical cell and a downlink frequency of the physical cell;
  • the terminal accesses the target entity cell by using the information of the target entity cell, including:
  • the terminal accesses the target entity cell by using frequency information of the physical cell in the virtual cell information.
  • the physical cell in the virtual cell information is a physical cell corresponding to a micro base station that meets a preset condition selected from at least one micro base station that receives the random access request;
  • the preset condition includes: the received signal quality meets a preset threshold; and if the received signal quality of the plurality of micro base stations satisfies the preset threshold, the micro base station with the smallest load is selected.
  • the terminal uses the virtual frequency to receive the virtual cell information, where the virtual cell information includes information of the at least one physical cell indicated by the virtual cell, and the terminal determines the target entity cell that is pre-accessed according to the information of the at least one physical cell.
  • the terminal accesses the target entity cell by using the information of the target entity cell. In this manner, the information of the physical cell is transmitted and received by using a virtual frequency, and the idle resource of the virtual frequency is fully utilized to reduce the delay of the terminal accessing the target entity cell.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).
  • the modules in the random access device of the embodiment of the present invention may be combined, divided, and deleted according to actual needs.
  • the units in the random access device may be combined, divided, and deleted according to actual needs.
  • the components of the microcontroller and the like may be implemented by a general-purpose integrated circuit, such as a central processing unit (CPU), or an application specific integrated circuit (ASIC).
  • a general-purpose integrated circuit such as a central processing unit (CPU), or an application specific integrated circuit (ASIC).

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Abstract

一种随机接入方法及装置，该随机接入方法包括：终端采用虚拟频率接收虚拟小区信息，所述虚拟小区信息包括所述虚拟小区所指示的至少一个实体小区的信息；所述终端根据所述至少一个实体小区的信息确定预接入的目标实体小区；所述终端采用所述目标实体小区的信息接入所述目标实体小区。采用本发明实施例可将实体小区的信息采用虚拟频率进行收发，充分利用虚拟频率的空闲资源，减小时延。

Description

一种随机接入方法及装置 技术领域
本发明涉及移动通信技术领域，尤其涉及一种随机接入方法及装置。
背景技术
在超高密度网络(Ultra Dense Network，UDN)系统中，随着网络中小区密度的增加，用户在超密集网络中的移动性管理变得异常严峻。如何避免空闲状态的用户在超密集网络中进行频繁的小区选择和小区重选以及如何避免连接状态的用户在超密集网络中进行频繁的切换等问题亟待解决。虚拟层技术可以有效控制信道的干扰问题和移动性问题。
中国电信指出，虚拟层技术的基本原理是由单层实体网络构建虚拟多层网络，如图1所示，单层实体小区构建两层网络：虚拟宏小区和实体微小区。当构建虚拟小区的实体小区处于单载波时，可将超密集网络中微基站划分为若干个簇，每个簇可分别构建虚拟层。网络为每个簇配置一个虚拟物理小区标识，即VPCI(Virtual PCI)。同一簇内的微基站同时发送虚拟层参考信号VRS(Virtual Reference Signal)，不同簇发送的VRS不同；同一簇内的微基站同时发送广播信息，寻呼信息，随机接入响应，公共控制信令，且使用VPCI加扰。传统实体小区构成实体层，网络为每个实体区配置一个物理小区标识PCI。
空闲态用户驻留在虚拟层，侦听微小区簇发送的信息，包括VRS，广播信息，寻呼信息，公共控制信令，同时使用VPCI对广播信息、寻呼信息和公共控制信令进行解扰。空闲态用户不需要识别实体层，在同一簇内移动时，不会发生小区重选。但是对于终端随机接入实体小区的过程中，现有技术所采用的方案仍然是终端从实体小区获取实体小区的系统信息，并根据实体小区的系统信息，向实体小区的微基站发送随机接入请求，进行接入，这种获取实体小区信息的方式会产生一些时延，且实体小区承载数据传输，资源也比较紧张。
发明内容
本发明实施例提供了一种随机接入方法及装置，将实体小区的信息采用虚拟频率进行收发，充分利用虚拟频率的空闲资源，减小时延。
本发明第一方面提供一种随机接入方法，包括：
终端采用虚拟频率接收虚拟小区信息，所述虚拟小区信息包括所述虚拟小区所指示的至少一个实体小区的信息；
所述终端根据所述至少一个实体小区的信息确定预接入的目标实体小区；
所述终端采用所述目标实体小区的信息接入所述目标实体小区。
基于第一方面，在第一方面的第一种可行的实施方式中，所述虚拟小区信息为虚拟小区系统信息，所述至少一个实体小区包括所述虚拟小区覆盖下的所有实体小区，所述实体小区的信息包括所述实体小区的随机接入信息，或者所述实体小区的信息包括所述实体小区的能力信息以及所述实体小区的随机接入信息；
其中，所述能力信息包括以下信息中的任意一种或者多种：
所述实体小区的负载信息、所述实体小区的多连接能力、所述实体小区的多输入多输出MIMO能力、所述实体小区的多媒体广播多播服务MBMS业务支持、所述实体小区最小路测支持MDT、所述实体小区的设备到设备D2D能力、所述实体小区的新载波类型或者扩展载波的支持。
基于第一方面第一种可行的实施方式，在第一方面的第二种可行的实施方式中，若所述实体小区的信息包括所述实体小区的能力信息以及所述实体小区的随机接入信息；
所述终端根据所述至少一个实体小区的信息确定预接入的目标实体小区之前，还包括：
所述终端搜索当前所在的至少一个备选实体小区；
所述终端根据所述至少一个实体小区的信息确定预接入的目标实体小区，包括：
所述终端从所述虚拟小区系统信息中获取所述至少一个备选实体小区中每个备选实体小区的能力信息；
所述终端根据每个所述备选实体小区的能力信息选取与所述终端的能力或者业务特性适配的实体小区，并将所述与所述终端的能力或者业务特性适配的实体小区确定为预接入的目标实体小区；
所述终端采用所述目标实体小区的信息接入所述目标实体小区，包括：
所述终端从所述虚拟小区系统信息中读取所述目标实体小区的随机接入信息，并利用所述目标实体小区的随机接入信息接入所述目标实体小区。
基于第一方面第一种可行的实施方式或者第一方面第二种可行的实施方式，在第一方面的第三种可行的实施方式中，所述虚拟小区系统信息在所述虚拟小区的物理广播信道PBCH和承载广播信道BCH发送。
基于第一方面，在第一方面的第四种可行的实施方式中，所述终端采用虚拟频率接收虚拟小区信息之前，还包括：
所述终端采用所述虚拟频率向所述虚拟小区发送随机接入请求，以触发所述虚拟小区根据所述随机接入请求采用虚拟小区信息向所述终端指示一个实体小区的信息，所述实体小区的信息为该实体小区的频率信息，所述实体小区的频率信息包括该实体小区的上行频率和该实体小区的下行频率；
所述终端根据所述至少一个实体小区的信息确定预接入的目标实体小区，包括：
所述终端将所述虚拟小区信息中所指示的实体小区确定为预接入的目标实体小区；
所述终端采用所述目标实体小区的信息接入所述目标实体小区，包括：
所述终端利用所述虚拟小区信息中的所述实体小区的频率信息接入所述目标实体小区。
基于第一方面第四种可行的实施方式中，在第一方面的第五种可行的实施方式中，所述虚拟小区信息中的所述实体小区为从接收到所述随机接入请求的至少一个微基站中选择的一个满足预设条件的微基站所对应的实体小区；
所述预设条件包括：接收信号质量满足预设门限；且若有多个微基站的接收信号质量满足所述预设门限，则选择负载最小的微基站。
本发明第二方面提供一种随机接入装置，包括：
接收模块，用于采用虚拟频率接收虚拟小区信息，所述虚拟小区信息包括所述虚拟小区所指示的至少一个实体小区的信息；
确定模块，用于根据所述至少一个实体小区的信息确定预接入的目标实体小区；
接入模块，用于采用所述目标实体小区的信息接入所述目标实体小区。
基于第二方面，在第二方面的第一种可行的实施方式中，所述虚拟小区信息为虚拟小区系统信息，所述至少一个实体小区包括所述虚拟小区覆盖下的所有实体小区，所述实体小区的信息包括所述实体小区的随机接入信息，或者所述实体小区的信息包括所述实体小区的能力信息以及所述实体小区的随机接入信息；
其中，所述能力信息包括以下信息中的任意一种或者多种：
所述实体小区的负载信息、所述实体小区的多连接能力、所述实体小区的多输入多输出MIMO能力、所述实体小区的多媒体广播多播服务MBMS业务支持、所述实体小区最小路测支持MDT、所述实体小区的设备到设备D2D能力、所述实体小区的新载波类型或者扩展载波的支持。
基于第二方面第一种可行的实施方式，在第二方面的第二种可行的实施方式中，若所述实体小区的信息包括所述实体小区的能力信息以及所述实体小区的随机接入信息；所述装置还包括：
搜索模块，用于搜索终端当前所在的至少一个备选实体小区；
所述确定模块包括获取单元和确定单元；
所述获取单元，用于从所述虚拟小区系统信息中获取所述至少一个备选实体小区中每个备选实体小区的能力信息；
所述确定单元，用于根据每个所述备选实体小区的能力信息选取与所述终端的能力或者业务特性适配的实体小区，并将所述与所述终端的能力或者业务特性适配的实体小区确定为预接入的目标实体小区；
所述接入模块具体用于从所述虚拟小区系统信息中读取所述目标实体小区的随机接入信息，并利用所述目标实体小区的随机接入信息接入所述目标实体小区。
基于第二方面第一种可行的实施方式或者第二方面第二种可行的实施方式，在第二方面的第三种可行的实施方式中，所述虚拟小区系统信息在所述虚拟小区的物理广播信道PBCH和承载广播信道BCH发送。
基于第二方面，在第二方面第四种可行的实施方式中，所述装置还包括：
发送模块，用于采用所述虚拟频率向所述虚拟小区发送随机接入请求，以触发所述虚拟小区根据所述随机接入请求采用虚拟小区信息向所述终端指示 一个实体小区的信息，所述实体小区的信息为该实体小区的频率信息，所述实体小区的频率信息包括该实体小区的上行频率和该实体小区的下行频率；
所述确定模块具体用于将所述虚拟小区信息中所指示的实体小区确定为预接入的目标实体小区；
所述接入模块具体用于利用所述虚拟小区信息中的所述实体小区的频率信息接入所述目标实体小区。
基于第二方面第四种可行的实施方式，在第二方面第五种可行的实施方式中，所述虚拟小区信息中的所述实体小区为从接收到所述随机接入请求的至少一个微基站中选择的一个满足预设条件的微基站所对应的实体小区；
所述预设条件包括：接收信号质量满足预设门限；且若有多个微基站的接收信号质量满足所述预设门限，则选择负载最小的微基站。
本发明实施例中，终端采用虚拟频率接收虚拟小区信息，该虚拟小区信息包括虚拟小区所指示的至少一个实体小区的信息，终端根据该至少一个实体小区的信息确定预接入的目标实体小区，终端采用该目标实体小区的信息接入该目标实体小区，这种方式将实体小区的信息采用虚拟频率进行收发，充分利用虚拟频率的空闲资源，减小终端接入目标实体小区的时延。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的一种虚拟小区架构图；
图2为本发明实施例提供的一种随机接入方法的流程示意图；
图3为本发明实施例提供的另一种随机接入方法的流程示意图；
图4为本发明实施例提供的又一种随机接入方法的流程示意图；
图5为本发明实施例提供的一种终端交互图；
图6为本发明实施例提供的另一种终端交互图；
图7为本发明实施例提供的一种随机接入装置的结构示意图；
图8为本发明实施例提供的另一种随机接入装置的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
请参照图2，为本发明实施例提供的一种随机接入方法的流程示意图，如图所示，本实施例的随机接入方法包括：
S200，终端采用虚拟频率接收虚拟小区信息，所述虚拟小区信息包括所述虚拟小区所指示的至少一个实体小区的信息；
具体实施例中，本发明实施例所提供随机接入方法主要解决实体小区组成虚拟小区场景下的随机接入问题，如图1所示，为本发明的随机接入方法所应用的系统架构图，如图所示，由单层实体网络构建虚拟多层网络。如下图所示，单层实体小区构建两层网络：虚拟宏小区和实体微小区。其中虚拟宏小区承载控制信令，负责移动性管理；实体微小区承载数据传输。
本发明实施例中，对于虚拟小区，可以有两种类型的架构，第一种架构为，虚拟小区带有一个主要传输点，作为无线资源控制协议(Radio Resource Control，RRC)链路保持点，该RRC链路保持点可以为虚拟层收发控制信令。需要说明的是，终端UE与RRC链路保持点之间是通过虚拟频率进行数据收发。第二种架构为，所有实体小区都是扁平的，虚拟层收发的控制信令是由所有实体小区的微基站中的任意一个或者多个采样虚拟频率发送的，需要说明的是，各个实体小区的微基站既可以采用虚拟频率收发信息，也可以采用实体频率收发信息，通常虚拟频率收发的信息为控制信令，实体频率收发的信息为交互数据，本发明实施例中的虚拟小区信息即是一种控制信令，因此采用虚拟频率进行收发。
通常空闲态用户终端驻留在虚拟层，当终端需要接入实体小区时，采用虚拟频率接收虚拟小区信息，该虚拟小区信息中包括虚拟小区所指示的至少一个实体小区的信息。可选的，虚拟小区信息可以是虚拟小区系统信息(Virtual  system information，VSI)，则虚拟小区信息中的实体小区的信息可以是每个实体小区的SI，进一步可选的，SI中可以包括该实体小区的随机接入信息以及用于表示该实体小区所支持的各种能力业务的能力信息。可选的，虚拟小区信息也可以是虚拟小区根据各个实体小区接收该终端的接收信号质量所选择的实体小区的频率信息，频率信息可以包括上行频率和下行频率。
S201，所述终端根据所述至少一个实体小区的信息确定预接入的目标实体小区；
具体实施例中，终端根据虚拟小区信息中所指示的至少一个实体小区的信息确定预接入的目标实体小区，通常若虚拟小区信息中包括多个实体小区的信息，则需要根据实体小区的信息以及终端自身的能力或业务进行选择，最终选择最适合的目标实体小区。
例如在异频实体小区场景下(即是在多个载波频率上部署独立的实体小区)，多载波负载均衡(或智能卸载)是需要考虑的因素。异频实体小区场景中，UE在考虑每个实体小区的载波负载的同时，驻留在最能适应该UE能力或业务的实体小区，以满足UE的需求。比如，如果UE期望进行双连接操作，而一个实体小区的载波并不能与其它载波合作提供双连接给UE，那么UE必须被切换到其它支持双连接的载波上来执行双连接操作，这引起不必要的切换信令和时延，因此本实施例中，在UE进行随机接入时，即考虑各个实体小区的载波情况，从而驻留在最合适的目标实体小区。又比如，UE具有更高的多输入多输出(Multiple input multiple output，MIMO)能力，如果一个载波不能支持这个MIMO能力，则不期望UE连接到这个载波。
可选的，若虚拟小区信息中包括虚拟小区所指示的一个实体小区的信息，并且该实体小区是虚拟小区综合各个实体小区的负载和/或接收信号质量所确定的实体小区，则终端可以直接将该实体小区确定为预接入的目标实体小区，进一步可选的，虚拟小区信息中的实体小区的信息即是该实体小区的上行频率和下行频率。
S202，所述终端采用所述目标实体小区的信息接入所述目标实体小区。
具体实施例中，当终端确定了预接入的目标实体小区后，即采用虚拟小区信息中该目标实体小区的信息接入该目标实体小区。具体的接入方法可以是向 该实体小区的微基站发送随机接入请求，微基站接收到随机接入请求后，返回随机接入响应，并进一步建立无线控制链路。
本发明实施例中，终端采用虚拟频率接收虚拟小区信息，该虚拟小区信息包括虚拟小区所指示的至少一个实体小区的信息，终端根据该至少一个实体小区的信息确定预接入的目标实体小区，终端采用该目标实体小区的信息接入该目标实体小区，这种方式将实体小区的信息采用虚拟频率进行收发，充分利用虚拟频率的空闲资源，减小终端接入目标实体小区的时延。
请参照图3，为本发明实施例提供的另一种随机接入方法的流程示意图，如图所示，该实施例的随机接入方法包括：
S300，终端采用虚拟频率接收虚拟小区信息，所述虚拟小区信息包括所述虚拟小区所指示的至少一个实体小区的信息；
所述虚拟小区信息为虚拟小区系统信息，所述至少一个实体小区包括所述虚拟小区覆盖下的所有实体小区，所述实体小区的信息包括所述实体小区的随机接入信息，或者所述实体小区的信息包括所述实体小区的能力信息以及所述实体小区的随机接入信息；
其中，所述能力信息包括以下信息中的任意一种或者多种：
所述实体小区的负载信息、所述实体小区的多连接能力、所述实体小区的多输入多输出MIMO能力、所述实体小区的多媒体广播多播服务(Multimedia Broadcast Multicast Service，MBMS)业务支持、所述实体小区最小路测支持(Minimization of Drive Tests，MDT)、所述实体小区的设备到设备D2D能力、所述实体小区的新载波类型或者扩展载波的支持。
具体实施例中，虚拟小区系统信息(简称VSI)包括它下面的所有实体小区的系统信息(SI)，为了节约VSI广播实体小区SI的信令开销，通常只有实体小区随机接入相关的SI(比如随机接入信息)才被广播，而且可以对信息进行某种压缩、分组操作来进一步减少开销。由于虚拟小区的虚拟频率不参与用户数据的传递，因此有比较充分的资源来传递其它小区的控制信令，比如虚拟小区系统信息VSI。
进一步可选的，为了在多个实体小区中分散负载并进一步匹配UE能力/ 业务特性，实体小区的一些其它信息(比如能力信息)也可以在VSI中被广播，来让UE判断应当接入到哪个目标实体小区。
可选的，虚拟小区的VSI包括MIB和SIB，VSI可以是在虚拟小区的广播信道(Broadcast Channel，BCH)和物理广播信道(Physical Broadcast Channel，PBCH)发送，UE提供BCH和PBCH获取VSI。通常VSI的周期可以更大，因为VSI只是为了减少UE的小区重选开销，不如实体小区的SI改变的频繁，且VSI由于包括虚拟小区信息、公共信道配置、邻虚拟小区信息和实体小区信息，可能具有更多内容，因此发送周期也会比较大，而虚拟小区的BCH/PBCH周期可以比现有LTE的周期更大。本实施例不同于传统系统中在物理下行共享信道(Physical Downlink Shared Channel，PDSCH)中传输SIB。
S301，所述终端搜索当前所在的至少一个备选实体小区；
具体实施例中，当UE需要进行随机接入时，UE搜索当前所在的至少一个备选实体小区，即是UE处于至少一个备选实体小区的重叠区域。需要说明的是，在终端UE搜索到备选实体小区时，无论各个实体小区之间是异频还是同频，均可获得该备选实体小区的下行频率。
S302，所述终端从所述虚拟小区系统信息中获取所述至少一个备选实体小区中每个备选实体小区的能力信息；
具体实施例中，UE从VSI中获得该至少一个备选实体小区中每个备选实体小区的能力信息，该能力信息可以表明该实体小区所支持的能力，以便于终端UE可以根据各个备选实体小区的能力信息选择最匹配UE能力或业务的目标实体小区。
S303，所述终端根据每个所述备选实体小区的能力信息选取与所述终端的能力或者业务特性适配的实体小区，并将所述与所述终端的能力或者业务特性适配的实体小区确定为预接入的目标实体小区；
具体实施例中，UE侧根据各个备选实体小区的能力信息，进一步选择匹配其终端的能力或者业务特性的载波和实体小区，比如多连接/MBMS/MDT/MIMO/D2D能力、UE等级、UE接收机能力等等。终端UE将与终端的能力或者业务特性匹配的实体小区确定为预接入的目标实体小区。在 选择合适的载波和目标实体小区后，UE在该目标实体小区完成随机接入过程。进一步可选的，终端UE在选择满足其能力或者业务特性的实体小区时，可进一步参考各个实体小区的负载信息，选择负载最小的实体小区。
S304，所述终端从所述虚拟小区系统信息中读取所述目标实体小区的随机接入信息，并利用所述目标实体小区的随机接入信息接入所述目标实体小区。
具体实施例中，VSI中包括了各个实体小区的SI，SI中携带了该实体小区的随机接入信息，UE从VSI中读取目标实体小区的SI中所携带的随机接入信息，并利用该随机接入信息接入目标实体小区。
可选的，终端也可以从实体小区获取该备选实体小区的SI(随机接入信息)，从而利用随机接入信息接入该实体小区。
本发明实施例中，终端采用虚拟频率接收虚拟小区信息，该虚拟小区信息包括虚拟小区所指示的至少一个实体小区的信息，终端根据该至少一个实体小区的信息确定预接入的目标实体小区，终端采用该目标实体小区的信息接入该目标实体小区，这种方式将实体小区的信息采用虚拟频率进行收发，充分利用虚拟频率的空闲资源，减小终端接入目标实体小区的时延。
请参照图4，为本发明实施例提供的又一种随机接入方法的流程示意图，如图所示，本实施例的随机接入方法包括：
S400，所述终端采用所述虚拟频率向所述虚拟小区发送随机接入请求，以触发所述虚拟小区根据所述随机接入请求采用虚拟小区信息向所述终端指示一个实体小区的信息，所述实体小区的信息为该实体小区的频率信息，所述实体小区的频率信息包括该实体小区的上行频率和该实体小区的下行频率；
具体实施例中，当UE需要执行随机接入实体小区时，采用虚拟频率向虚拟小区发送随机接入请求，虚拟小区可根据随机接入请求，综合考虑接收到所述随机接入请求的至少一个微基站中选择的一个满足预设条件的微基站所对应的实体小区；可选的，该预设条件包括：接收信号质量满足预设门限；且若有多个微基站的接收信号质量满足所述预设门限，则选择负载最小的微基站。需要说明的是，若系统架构包括一个主要传输点，则由该主要传输点进行选择，若所有实体小区是扁平的，则由各个基站之间的信息交互进行选择确定。该实 体小区的信息包括该实体小区的频率信息，频率信息包括上行频率和下行频率。
需要说明的是，若虚拟小区信息中没有指示实体小区的频率信息，那么UE认为该实体小区具有与虚拟小区相同的上行UL频率和下行DL频率。
S401，终端采用虚拟频率接收虚拟小区信息，所述虚拟小区信息包括所述虚拟小区所指示的至少一个实体小区的信息；
S402，所述终端将所述虚拟小区信息中所指示的实体小区确定为预接入的目标实体小区；
具体实施例中，UE接收到虚拟小区信息(基站针对随机接入请求反馈的随机接入响应)，并将该虚拟小区信息中所指示的一个实体小区确定为预接入的目标实体小区，将虚拟小区信息中的实体小区的频率信息确定为目标实体小区的上行频率和下行频率。
S403，所述终端利用所述虚拟小区信息中的所述实体小区的频率信息接入所述目标实体小区。
具体实施例中，UE将在虚拟小区信息中所指示的实体小区上行UL频率上发送随机接入请求，并在指示的实体小区下行DL频率上接收随机接入响应，从而接入该目标实体小区。
本发明实施例中，终端采用虚拟频率接收虚拟小区信息，该虚拟小区信息包括虚拟小区所指示的至少一个实体小区的信息，终端根据该至少一个实体小区的信息确定预接入的目标实体小区，终端采用该目标实体小区的信息接入该目标实体小区，这种方式将实体小区的信息采用虚拟频率进行收发，充分利用虚拟频率的空闲资源，减小终端接入目标实体小区的时延。
请参照图5，为本发明实施例提供的一种终端交互图，如图所示，该系统架构包括虚拟小区、该虚拟小区覆盖下的实体小区以及UE；
S1，虚拟小区广播VSI，该VSI中包括每个实体小区的SI；
S2，UE搜索当前下行链路接收信号质量最好的实体小区；
S3，UE从所接收的VSI中获取该实体小区的SI；
S4，UE采用所获取的该实体小区的SI接入该实体小区。
请参照图6，为本发明实施例提供的另一种终端交互图，如图所示，该系统架构包括虚拟小区、该虚拟小区覆盖下的实体小区1和实体小区2以及UE；
S1，UE决定随机接入实体小区，并进行小区搜索；
S2，UE搜索到几个实体小区，例如实体小区1和实体小区2；
S3，虚拟小区广播VSI，该VSI中包括每个实体小区的系统信息以及其它能力信息；
S4，UE从VSI中获取实体小区1和实体小区2的系统信息以及能力信息；
S5，UE比较实体小区1和实体小区2的能力信息，最终选择出实体小区2满足UE的标准、负载最小，能够匹配UE的业务或能力；
S6，UE与实体小区2之间通过收发随机接入信息，接入该实体小区2。
请参照图7，为本发明实施例提供的一种随机接入装置的结构示意图，如图所示，该实施例的随机接入装置包括：
接收模块100，用于采用虚拟频率接收虚拟小区信息，所述虚拟小区信息包括所述虚拟小区所指示的至少一个实体小区的信息；
可选的，虚拟小区信息可以是虚拟小区系统信息(Virtual system information，VSI)，则虚拟小区信息中的实体小区的信息可以是每个实体小区的SI，进一步可选的，SI中可以包括该实体小区的随机接入信息以及用于表示该实体小区所支持的各种能力业务的能力信息。
可选的，虚拟小区信息也可以是虚拟小区根据各个实体小区接收该终端的接收信号质量所选择的实体小区的频率信息，频率信息可以包括上行频率和下行频率。
确定模块101，用于根据所述至少一个实体小区的信息确定预接入的目标实体小区；
通常若虚拟小区信息中包括多个实体小区的信息，则需要根据实体小区的信息以及终端自身的能力或业务进行选择，最终选择最适合的目标实体小区。
可选的，若虚拟小区信息中包括虚拟小区所指示的一个实体小区的信息，并且该实体小区是虚拟小区综合各个实体小区的负载和/或接收信号质量所确 定的实体小区，则终端可以直接将该实体小区确定为预接入的目标实体小区，进一步可选的，虚拟小区信息中的实体小区的信息即是该实体小区的上行频率和下行频率。
接入模块102，用于采用所述目标实体小区的信息接入所述目标实体小区。
可选的，所述虚拟小区信息为虚拟小区系统信息，所述至少一个实体小区包括所述虚拟小区覆盖下的所有实体小区，所述实体小区的信息包括所述实体小区的随机接入信息，或者所述实体小区的信息包括所述实体小区的能力信息以及所述实体小区的随机接入信息；
其中，所述能力信息包括以下信息中的任意一种或者多种：
所述实体小区的负载信息、所述实体小区的多连接能力、所述实体小区的多输入多输出MIMO能力、所述实体小区的多媒体广播多播服务(Multimedia Broadcast Multicast Service，MBMS)业务支持、所述实体小区最小路测支持(Minimization of Drive Tests，MDT)、所述实体小区的设备到设备D2D能力、所述实体小区的新载波类型或者扩展载波的支持。
如图7所示，该装置还可以包括搜索模块103；
搜索模块103，用于搜索终端当前所在的至少一个备选实体小区；
所述确定模块101包括获取单元和确定单元；
所述获取单元，用于从所述虚拟小区系统信息中获取所述至少一个备选实体小区中每个备选实体小区的能力信息；
所述确定单元，用于根据每个所述备选实体小区的能力信息选取与所述终端的能力或者业务特性适配的实体小区，并将所述与所述终端的能力或者业务特性适配的实体小区确定为预接入的目标实体小区；
所述接入模块102具体用于从所述虚拟小区系统信息中读取所述目标实体小区的随机接入信息，并利用所述目标实体小区的随机接入信息接入所述目标实体小区。
进一步可选的，如图7所示，该装置还可以包括发送模块104；
发送模块104，用于采用所述虚拟频率向所述虚拟小区发送随机接入请求，以触发所述虚拟小区根据所述随机接入请求采用虚拟小区信息向所述终端 指示一个实体小区的信息，所述实体小区的信息为该实体小区的频率信息，所述实体小区的频率信息包括该实体小区的上行频率和该实体小区的下行频率；
可选的，虚拟小区可根据随机接入请求，综合考虑接收到所述随机接入请求的至少一个微基站中选择的一个满足预设条件的微基站所对应的实体小区；可选的，该预设条件包括：接收信号质量满足预设门限；且若有多个微基站的接收信号质量满足所述预设门限，则选择负载最小的微基站。
所述确定模块101具体用于将所述虚拟小区信息中所指示的实体小区确定为预接入的目标实体小区；
所述接入模块102具体用于利用所述虚拟小区信息中的所述实体小区的频率信息接入所述目标实体小区。
本发明实施例中，终端采用虚拟频率接收虚拟小区信息，该虚拟小区信息包括虚拟小区所指示的至少一个实体小区的信息，终端根据该至少一个实体小区的信息确定预接入的目标实体小区，终端采用该目标实体小区的信息接入该目标实体小区，这种方式将实体小区的信息采用虚拟频率进行收发，充分利用虚拟频率的空闲资源，减小终端接入目标实体小区的时延。
可以理解的是，上述随机接入装置中各个模块和各个单元的具体实现方式可以进一步参考方法实施例中的相关描述。
请参照图8，为本发明实施例提供的另一种随机接入装置的结构示意图，如图所示，图8的随机接入装置可用于实现上述方法实施例中各步骤及方法。图8的实施例中，随机接入装置40包括天线400、发射机401、接收机402、处理器404和存储器404。处理器404控制随机接入装置40的操作，并可用于处理信号。存储器404可以包括只读存储器和随机存取存储器，并向处理器403提供指令和数据。发射机401和接收机402可以耦合到天线400，接入站点40的各个组件通过总线系统405耦合在一起，其中总线系统405除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图中将各种总线都标为总线系统405。上述随机接入装置可以包括在终端中。
具体地，存储器404可存储执行以下过程的指令：
终端采用虚拟频率接收虚拟小区信息，所述虚拟小区信息包括所述虚拟小区所指示的至少一个实体小区的信息；
所述终端根据所述至少一个实体小区的信息确定预接入的目标实体小区；
所述终端采用所述目标实体小区的信息接入所述目标实体小区。
可选的，所述虚拟小区信息为虚拟小区系统信息，所述至少一个实体小区包括所述虚拟小区覆盖下的所有实体小区，所述实体小区的信息包括所述实体小区的随机接入信息，或者所述实体小区的信息包括所述实体小区的能力信息以及所述实体小区的随机接入信息；
其中，所述能力信息包括以下信息中的任意一种或者多种：
所述实体小区的负载信息、所述实体小区的多连接能力、所述实体小区的多输入多输出MIMO能力、所述实体小区的多媒体广播多播服务MBMS业务支持、所述实体小区最小路测支持MDT、所述实体小区的设备到设备D2D能力、所述实体小区的新载波类型或者扩展载波的支持。
作为一种可选的实施方式，若所述实体小区的信息包括所述实体小区的能力信息以及所述实体小区的随机接入信息；
所述终端根据所述至少一个实体小区的信息确定预接入的目标实体小区之前，还包括：
所述终端搜索当前所在的至少一个备选实体小区；
所述终端根据所述至少一个实体小区的信息确定预接入的目标实体小区，包括：
所述终端从所述虚拟小区系统信息中获取所述至少一个备选实体小区中每个备选实体小区的能力信息；
所述终端根据每个所述备选实体小区的能力信息选取与所述终端的能力或者业务特性适配的实体小区，并将所述与所述终端的能力或者业务特性适配的实体小区确定为预接入的目标实体小区；
所述终端采用所述目标实体小区的信息接入所述目标实体小区，包括：
所述终端从所述虚拟小区系统信息中读取所述目标实体小区的随机接入信息，并利用所述目标实体小区的随机接入信息接入所述目标实体小区。
可选的，所述虚拟小区系统信息在所述虚拟小区的物理广播信道PBCH 和承载广播信道BCH发送。
作为另一种可选的实施方式，所述终端采用虚拟频率接收虚拟小区信息之前，还包括：
所述终端采用所述虚拟频率向所述虚拟小区发送随机接入请求，以触发所述虚拟小区根据所述随机接入请求采用虚拟小区信息向所述终端指示一个实体小区的信息，所述实体小区的信息为该实体小区的频率信息，所述实体小区的频率信息包括该实体小区的上行频率和该实体小区的下行频率；
所述终端根据所述至少一个实体小区的信息确定预接入的目标实体小区，包括：
所述终端将所述虚拟小区信息中所指示的实体小区确定为预接入的目标实体小区；
所述终端采用所述目标实体小区的信息接入所述目标实体小区，包括：
所述终端利用所述虚拟小区信息中的所述实体小区的频率信息接入所述目标实体小区。
可选的，所述虚拟小区信息中的所述实体小区为从接收到所述随机接入请求的至少一个微基站中选择的一个满足预设条件的微基站所对应的实体小区；
所述预设条件包括：接收信号质量满足预设门限；且若有多个微基站的接收信号质量满足所述预设门限，则选择负载最小的微基站。
本发明实施例中，终端采用虚拟频率接收虚拟小区信息，该虚拟小区信息包括虚拟小区所指示的至少一个实体小区的信息，终端根据该至少一个实体小区的信息确定预接入的目标实体小区，终端采用该目标实体小区的信息接入该目标实体小区，这种方式将实体小区的信息采用虚拟频率进行收发，充分利用虚拟频率的空闲资源，减小终端接入目标实体小区的时延。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来指令相关的硬件来完成，所述的程序可存储于一计算机可读取存储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。其中，所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory，ROM)或随机存储记忆体(Random Access Memory，RAM)等。
本发明实施例方法中的步骤可以根据实际需要进行顺序调整、合并和删 减。
本发明实施例随机接入装置中的模块可以根据实际需要进行合并、划分和删减。
本发明实施例随机接入装置中的单元可以根据实际需要进行合并、划分和删减。
本发明实施例的微控制器等部件,可以以通用集成电路，如中央处理器(Central Processing Unit，CPU),或以专用集成电路(Application Specific Integrated Circuit，ASIC)来实现。
以上所揭露的仅为本发明具体实施例而已，当然不能以此来限定本发明之权利范围，因此依本发明权利要求所作的等同变化，仍属本发明所涵盖的范围。

Claims (12)

  1. 一种随机接入方法，其特征在于，包括：
    终端采用虚拟频率接收虚拟小区信息，所述虚拟小区信息包括所述虚拟小区所指示的至少一个实体小区的信息；
    所述终端根据所述至少一个实体小区的信息确定预接入的目标实体小区；
    所述终端采用所述目标实体小区的信息接入所述目标实体小区。
  2. 如权利要求1所述的方法，其特征在于，所述虚拟小区信息为虚拟小区系统信息，所述至少一个实体小区包括所述虚拟小区覆盖下的所有实体小区，所述实体小区的信息包括所述实体小区的随机接入信息，或者所述实体小区的信息包括所述实体小区的能力信息以及所述实体小区的随机接入信息；
    其中，所述能力信息包括以下信息中的任意一种或者多种：
    所述实体小区的负载信息、所述实体小区的多连接能力、所述实体小区的多输入多输出MIMO能力、所述实体小区的多媒体广播多播服务MBMS业务支持、所述实体小区最小路测支持MDT、所述实体小区的设备到设备D2D能力、所述实体小区的新载波类型或者扩展载波的支持。
  3. 如权利要求2所述的方法，其特征在于，若所述实体小区的信息包括所述实体小区的能力信息以及所述实体小区的随机接入信息；
    所述终端根据所述至少一个实体小区的信息确定预接入的目标实体小区之前，还包括：
    所述终端搜索当前所在的至少一个备选实体小区；
    所述终端根据所述至少一个实体小区的信息确定预接入的目标实体小区，包括：
    所述终端从所述虚拟小区系统信息中获取所述至少一个备选实体小区中每个备选实体小区的能力信息；
    所述终端根据每个所述备选实体小区的能力信息选取与所述终端的能力或者业务特性适配的实体小区，并将所述与所述终端的能力或者业务特性适配 的实体小区确定为预接入的目标实体小区；
    所述终端采用所述目标实体小区的信息接入所述目标实体小区，包括：
    所述终端从所述虚拟小区系统信息中读取所述目标实体小区的随机接入信息，并利用所述目标实体小区的随机接入信息接入所述目标实体小区。
  4. 如权利要求2或3所述的方法，其特征在于，所述虚拟小区系统信息在所述虚拟小区的物理广播信道PBCH和承载广播信道BCH发送。
  5. 如权利要求1所述的方法，其特征在于，所述终端采用虚拟频率接收虚拟小区信息之前，还包括：
    所述终端采用所述虚拟频率向所述虚拟小区发送随机接入请求，以触发所述虚拟小区根据所述随机接入请求采用虚拟小区信息向所述终端指示一个实体小区的信息，所述实体小区的信息为该实体小区的频率信息，所述实体小区的频率信息包括该实体小区的上行频率和该实体小区的下行频率；
    所述终端根据所述至少一个实体小区的信息确定预接入的目标实体小区，包括：
    所述终端将所述虚拟小区信息中所指示的实体小区确定为预接入的目标实体小区；
    所述终端采用所述目标实体小区的信息接入所述目标实体小区，包括：
    所述终端利用所述虚拟小区信息中的所述实体小区的频率信息接入所述目标实体小区。
  6. 如权利要求5所述的方法，其特征在于，所述虚拟小区信息中的所述实体小区为从接收到所述随机接入请求的至少一个微基站中选择的一个满足预设条件的微基站所对应的实体小区；
    所述预设条件包括：接收信号质量满足预设门限；且若有多个微基站的接收信号质量满足所述预设门限，则选择负载最小的微基站。
  7. 一种随机接入装置，其特征在于，包括：
    接收模块，用于采用虚拟频率接收虚拟小区信息，所述虚拟小区信息包括所述虚拟小区所指示的至少一个实体小区的信息；
    确定模块，用于根据所述至少一个实体小区的信息确定预接入的目标实体小区；
    接入模块，用于采用所述目标实体小区的信息接入所述目标实体小区。
  8. 如权利要求7所述的装置，其特征在于，所述虚拟小区信息为虚拟小区系统信息，所述至少一个实体小区包括所述虚拟小区覆盖下的所有实体小区，所述实体小区的信息包括所述实体小区的随机接入信息，或者所述实体小区的信息包括所述实体小区的能力信息以及所述实体小区的随机接入信息；
    其中，所述能力信息包括以下信息中的任意一种或者多种：
    所述实体小区的负载信息、所述实体小区的多连接能力、所述实体小区的多输入多输出MIMO能力、所述实体小区的多媒体广播多播服务MBMS业务支持、所述实体小区最小路测支持MDT、所述实体小区的设备到设备D2D能力、所述实体小区的新载波类型或者扩展载波的支持。
  9. 如权利要求8所述的装置，其特征在于，若所述实体小区的信息包括所述实体小区的能力信息以及所述实体小区的随机接入信息；所述装置还包括：
    搜索模块，用于搜索终端当前所在的至少一个备选实体小区；
    所述确定模块包括获取单元和确定单元；
    所述获取单元，用于从所述虚拟小区系统信息中获取所述至少一个备选实体小区中每个备选实体小区的能力信息；
    所述确定单元，用于根据每个所述备选实体小区的能力信息选取与所述终端的能力或者业务特性适配的实体小区，并将所述与所述终端的能力或者业务特性适配的实体小区确定为预接入的目标实体小区；
    所述接入模块具体用于从所述虚拟小区系统信息中读取所述目标实体小区的随机接入信息，并利用所述目标实体小区的随机接入信息接入所述目标实体小区。
  10. 如权利要求8或9所述的装置，其特征在于，所述虚拟小区系统信息在所述虚拟小区的物理广播信道PBCH和承载广播信道BCH发送。
  11. 如权利要求7所述的装置，其特征在于，所述装置还包括：
    发送模块，用于采用所述虚拟频率向所述虚拟小区发送随机接入请求，以触发所述虚拟小区根据所述随机接入请求采用虚拟小区信息向所述终端指示一个实体小区的信息，所述实体小区的信息为该实体小区的频率信息，所述实体小区的频率信息包括该实体小区的上行频率和该实体小区的下行频率；
    所述确定模块具体用于将所述虚拟小区信息中所指示的实体小区确定为预接入的目标实体小区；
    所述接入模块具体用于利用所述虚拟小区信息中的所述实体小区的频率信息接入所述目标实体小区。
  12. 如权利要求11所述的装置，其特征在于，所述虚拟小区信息中的所述实体小区为从接收到所述随机接入请求的至少一个微基站中选择的一个满足预设条件的微基站所对应的实体小区；
    所述预设条件包括：接收信号质量满足预设门限；且若有多个微基站的接收信号质量满足所述预设门限，则选择负载最小的微基站。
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EP3725118B1 (en) * 2018-01-31 2022-03-09 Huawei Technologies Co., Ltd. Devices and methods for controlling base stations of a communication network
US10972201B2 (en) * 2019-05-03 2021-04-06 Samsung Electronics Co., Ltd Method and apparatus for providing enhanced reference signal received power estimation
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101772028A (zh) * 2009-01-05 2010-07-07 华为技术有限公司 一种资源管理的方法、网络设备、用户设备及系统
US20140029531A1 (en) * 2012-07-27 2014-01-30 Samsung Electronics Co., Ltd. Resource allocation method and apparatus for cooperative transmission of base stations in wireless communication system
CN103841588A (zh) * 2012-11-21 2014-06-04 华为技术有限公司 无线通信方法、设备及系统
WO2015069026A1 (en) * 2013-11-05 2015-05-14 Lg Electronics Inc. Method and apparatus for wireless communication with dual connectivity

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6418317B1 (en) * 1999-12-01 2002-07-09 Telefonaktiebolaget Lm Ericsson (Publ) Method and system for managing frequencies allocated to a base station
US9143288B2 (en) * 2006-07-24 2015-09-22 Qualcomm Incorporated Variable control channel for a wireless communication system
US8364150B2 (en) * 2010-01-07 2013-01-29 Alcatel Lucent Method for selecting base station for handover from plurality of target base stations and device thereof
KR101856235B1 (ko) * 2011-02-11 2018-05-10 한국전자통신연구원 다중 송수신 포인트를 사용하는 무선 통신 시스템
BR112015009440A2 (pt) * 2012-11-08 2017-07-04 Optis Cellular Tech Llc entidade e método de operação de uma entidade de uma rede de área local sem fio
CN105027626B (zh) 2013-02-18 2019-04-23 Lg 电子株式会社 在无线通信系统中执行数据传输的方法和设备
ES2810908T3 (es) 2013-06-11 2021-03-09 Nokia Solutions & Networks Oy Movilidad en capas
CN104754622A (zh) * 2013-12-31 2015-07-01 中兴通讯股份有限公司 指示信息的发送方法、装置及用户设备
US9661546B2 (en) 2014-01-29 2017-05-23 Mediatek Inc. Dynamic offload selection in mobile communication systems
US9769644B2 (en) * 2014-03-14 2017-09-19 Intel IP Corporation Systems, methods, and devices for device-to-device communication mode selection
WO2017051213A1 (en) * 2015-09-22 2017-03-30 Telefonaktiebolaget Lm Ericsson (Publ) Cell selection based on congestion levels

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101772028A (zh) * 2009-01-05 2010-07-07 华为技术有限公司 一种资源管理的方法、网络设备、用户设备及系统
US20140029531A1 (en) * 2012-07-27 2014-01-30 Samsung Electronics Co., Ltd. Resource allocation method and apparatus for cooperative transmission of base stations in wireless communication system
CN103841588A (zh) * 2012-11-21 2014-06-04 华为技术有限公司 无线通信方法、设备及系统
WO2015069026A1 (en) * 2013-11-05 2015-05-14 Lg Electronics Inc. Method and apparatus for wireless communication with dual connectivity

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3346742A4 *

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US20190059109A1 (en) 2019-02-21
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