WO2017162191A1 - 一种无线通信方法及装置 - Google Patents

一种无线通信方法及装置 Download PDF

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Publication number
WO2017162191A1
WO2017162191A1 PCT/CN2017/077852 CN2017077852W WO2017162191A1 WO 2017162191 A1 WO2017162191 A1 WO 2017162191A1 CN 2017077852 W CN2017077852 W CN 2017077852W WO 2017162191 A1 WO2017162191 A1 WO 2017162191A1
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Prior art keywords
node
routing information
hop node
wireless communication
information table
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PCT/CN2017/077852
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English (en)
French (fr)
Inventor
何青春
黄河
谢峰
Original Assignee
中兴通讯股份有限公司
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Priority claimed from CN201610169585.9A external-priority patent/CN107231669B/zh
Priority claimed from CN201610169166.5A external-priority patent/CN107231306B/zh
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2017162191A1 publication Critical patent/WO2017162191A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update

Definitions

  • the present application relates to, but is not limited to, the field of communications, and more particularly to a wireless communication method and apparatus.
  • the Ultra Dense Network is one of the core technologies of 5G.
  • the throughput (bps/km2) is the key technology to meet the capacity requirements of 5G systems.
  • the wireless node accesses the macro station through a one-hop wireless path, and there are certain problems in the ultra-dense networking scenario:
  • the macro station generally provides wide-area coverage for low-frequency point work, and the macro station bandwidth is not large enough to meet the high-speed transmission requirements;
  • the distance between the macro station and the wireless access point is far, generally greater than the distance from the wireless access point to the neighboring small stations. Therefore, from the perspective of the propagation environment, the macro station is not a good primary base station (Donor). eNB) option.
  • a neighboring small station For a wireless access point, if a neighboring small station can be selected as a Donor eNB, the link between the two is relatively close, and the link condition is good, which can support large bandwidth and high rate transmission, which is a more optimized method. If the wireless access point selects the neighboring small station as the Donor eNB, and the neighboring small station has limited coverage due to power or frequency, then it is not necessarily possible for the wireless access point to select the appropriate one-hop path. Donor eNB, so multi-hop paths will be an inevitable way for ultra-dense small station deployments and some wireless access point scenarios.
  • IP Internet Protocol
  • the present application proposes a wireless communication method and apparatus, which can improve the data analysis efficiency and data transmission efficiency of the routing mechanism.
  • the embodiment of the present application provides a wireless communication method, including:
  • the node After the user equipment (UE) accesses or receives the routing information corresponding to the UE reported by the other node, the node generates a routing information table corresponding to the UE.
  • UE user equipment
  • the wireless communication method may further include:
  • the node generates the routing information corresponding to the UE to be reported by the local node, and reports the generated routing information corresponding to the UE to the previous hop node of the local node, so that the previous hop node generates the corresponding UE Routing information table.
  • the routing information table may include one or more of the following: a route ID, node information of a previous hop node, node information of a next hop node, and UE information.
  • the node information may include a node ID and a node level.
  • the routing information corresponding to the UE reported by the node may include: an ID of the node, a level, and an ID of the UE.
  • the foregoing wireless communication method may further include:
  • the routing information table is maintained according to one of the following ways:
  • Manner 1 The node deletes the routing information table corresponding to the UE after the UE disconnects or receives the routing information deletion notification for the UE reported by the other node, and the UE is deleted for the UE.
  • the routing information deletion notification is reported to the previous hop node of the node;
  • Manner 2 The node starts a timer when receiving a routing information deletion notification for the UE reported by the other node; if the timer expires, and the UE is not connected to the node, the node deletes the UE Corresponding routing information table, and the routing information deletion notification for the UE is reported to the previous hop node of the node; if the node detects that the UE is connected to the node before the timer expires, Then, the routing information table corresponding to the UE is updated.
  • the node may be a wireless access point (AP) or a macro station.
  • AP wireless access point
  • the foregoing wireless communication method may further include:
  • the node When the node receives the data packet for the UE, the node selects a next hop node or a previous hop node according to the routing information table corresponding to the UE;
  • the node encapsulates the data packet and sends the encapsulated data packet to a next hop node or a previous hop node of the node.
  • the encapsulating the data packet by the node may include:
  • the data packet is encapsulated into an AP MAC PDU frame structure, and the UE ID corresponding to the UE is carried in the AP MAC PDU frame structure.
  • the UE ID corresponding to the UE may be carried in the MAC CE of the AP MAC PDU, and indicated by the reserved logical channel identifier (LCID).
  • LCID reserved logical channel identifier
  • the AP MAC PDU frame structure may include an AP MAC PDU header and an AP MAC payload;
  • the AP MAC PDU header may include an AP MAC PDU subheader and a UE MAC header;
  • the AP MAC payload may include The MAC CE and the UE MAC payload carrying the UE ID;
  • the UE MAC payload may include at least a MAC CE and a MAC SDU; and the UE ID corresponding to the UE may be set to be carried in the first MAC CE field of the AP MAC payload. ;
  • the AP MAC PDU frame structure may include AP routing information and a UE MAC PDU, where the AP routing information may include an AP header information and a MAC CE that carries the UE ID; wherein the LCID reserved in the AP header information is used. Indicates that it is carried in the MAC CE of the AP routing information. The UE ID corresponding to the UE is allowed.
  • the node selects a next hop node or a previous hop node according to the routing information table corresponding to the UE, and may include:
  • the routing information table corresponding to the UE indicates that the next hop node or the last hop node of the node is multiple, one of the nodes is selected as a next hop node or a previous hop node according to a predetermined selection policy;
  • the routing information table corresponding to the UE indicates that the next hop node or the last hop node of the node is one, the node is used as a next hop node or a previous hop node.
  • the selecting one of the nodes as the next hop node or the last hop node according to the predetermined selection policy may include:
  • the next hop node or the last hop node is selected according to one or more of service quality of service (QoS), delay, channel quality, and channel capacity.
  • QoS quality of service
  • the embodiment of the present application further provides a wireless communication device, which is disposed on a node, and includes:
  • An access unit or a receiving unit where the access unit is configured to implement UE access, and the receiving unit is configured to receive routing information corresponding to the UE reported by other nodes;
  • the establishing unit is configured to generate a routing information table corresponding to the UE after the UE accesses or the receiving unit receives the routing information corresponding to the UE reported by the other node.
  • the wireless communication device may further include:
  • the reporting unit is configured to: after the UE accesses or the receiving unit receives the routing information corresponding to the UE reported by the other node, the routing information corresponding to the UE to be reported by the local node is generated, and the generated route corresponding to the UE is generated. The information is reported to the previous hop node of the node.
  • the routing information table may include one or more of the following:
  • Route ID node information of the last hop node, node information of the next hop node, and UE information.
  • the node information may include a node ID and a node level.
  • the routing information corresponding to the UE reported by the reporting unit may be included in the packet. Including: the ID of the node, the level, and the ID of the UE.
  • the wireless communication device described above may further include a maintenance unit, wherein the maintenance unit may include any one of the following modules:
  • a first maintenance module configured to: after the UE disconnects from the local node, or when the receiving unit receives the routing information deletion notification for the UE reported by the other node, deleting the routing information table corresponding to the UE, and The routing information deletion notification of the UE is reported to the previous hop node of the local node;
  • a second maintenance module configured to start a timer when the receiving unit receives a routing information deletion notification for the UE reported by the other node; if the timer expires, and the UE is not connected to the local node, deleting the a routing information table corresponding to the UE, and the routing information deletion notification for the UE is reported to the previous hop node of the local node; if the UE is detected to be connected to the local node before the timer expires, the update station is updated.
  • the node may be an AP or a macro station.
  • the wireless communication device may further include:
  • a determining unit configured to: when the node receives the data packet for the UE, select a next hop node or a previous hop node according to the routing information table corresponding to the UE;
  • a packaging unit configured to encapsulate the data packet
  • a forwarding unit configured to send the encapsulated data packet to a next hop node or a previous hop node of the node.
  • the encapsulation unit may be configured to encapsulate the data packet in the following manner:
  • the data packet is encapsulated into an AP MAC PDU frame structure, and the UE ID corresponding to the UE is carried in the AP MAC PDU frame structure.
  • the confirming unit may include:
  • a routing information confirming module configured to acquire a UE ID corresponding to the UE according to a data packet for the UE, and search for a routing information table corresponding to the UE ID;
  • a first confirmation module configured to: when the routing information table corresponding to the UE indicates the node When there are multiple hop nodes or a hop node, one of the nodes is selected as the next hop node or the last hop node according to a predetermined selection policy;
  • the second acknowledgment module is configured to use the node as the next hop node or the last hop node when the routing information table corresponding to the UE indicates that the next hop node or the last hop node of the node is one.
  • the first confirmation module may be configured to select one of the nodes as a next hop node or a previous hop node according to a predetermined selection policy by:
  • the next hop node or the last hop node is selected according to one or more of service QoS, delay, channel quality, and channel capacity.
  • the embodiment of the present application further provides a computer readable storage medium storing computer executable instructions, which are implemented by a processor to implement the wireless communication method described above.
  • the triggering node when the UE accesses the node, the triggering node establishes a routing information table based on the node information and the UE ID, and the nodes on the multiple paths respectively maintain respective routing information tables, and in the data transmission process, each Nodes (for example, macro stations/Donors, wireless access points) perform routing according to the routing information table maintained by themselves, without routing through IP, reducing the packet header overhead of the data packet, and routing can be performed through the underlying analysis. It is not necessary to obtain an IP address through high-level resolution, thereby effectively improving the efficiency of data transmission.
  • FIG. 1 is a flowchart of a method for wireless communication according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a multi-hop wireless communication network provided by the present application.
  • 3A is a schematic flowchart of establishing a routing information table in an embodiment of the present application.
  • FIG. 3B is a schematic diagram of a process of deleting a routing information table according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of another process of establishing a routing information table according to an embodiment of the present application.
  • FIG. 5 is a flowchart of another wireless communication method according to an embodiment of the present application.
  • 6A is a schematic structural diagram of an exemplary AP MAC PDU frame
  • 6B is a schematic structural diagram of another exemplary AP MAC PDU frame
  • FIG. 7 is a schematic structural diagram of a UE MAC PDU frame
  • FIG. 8 is a schematic structural diagram of a multi-hop wireless communication protocol stack according to an embodiment of the present application.
  • FIG. 9 is a schematic flowchart of data transmission in an embodiment of the present application.
  • FIG. 10 is another schematic flowchart of data transmission in the embodiment of the present application.
  • FIG. 11 is a schematic diagram of a wireless communication apparatus according to an embodiment of the present application.
  • FIG. 12 is a schematic diagram of another wireless communication apparatus according to an embodiment of the present application.
  • an embodiment of the present application provides a wireless communication method, including:
  • Step 100 The user equipment (UE, User Equipment) accesses the node, or the node receives the routing information corresponding to the UE reported by the other node;
  • UE User Equipment
  • Step 200 The node generates a routing information table corresponding to the UE.
  • the node in this embodiment may be a wireless access point (AP, Access Point) or a macro station.
  • AP wireless access point
  • the last hop node of the node may be another AP or a macro station.
  • the wireless communication method provided in this embodiment may further include:
  • the node generates the routing information corresponding to the UE to be reported by the local node, and reports the generated routing information of the UE to the previous hop node of the local node, so that the previous hop node generates a routing information table corresponding to the UE.
  • the node reports the routing information corresponding to the UE generated by the local node to the previous hop node.
  • the sequence of generating routing information corresponding to the UE and generating the routing information table corresponding to the UE is not limited. For example, generate after step 200 The routing information corresponding to the UE is reported to the previous hop node; or the routing information corresponding to the UE is generated before the step 200 and the routing information is reported to the previous hop node.
  • the routing information table may be used to indicate a previous hop or a next hop node in the multi-hop data transmission.
  • the routing information table may include one or more of the following: a route identifier (ID), node information of a previous hop node, node information of a next hop node, and UE information.
  • ID a route identifier
  • the routing information table of the first node may not include the node information of the next hop node
  • the routing information table of the last node (for example, the macro station) may not include the node information of the previous hop node.
  • the UE information may include a User Equipment Identity (UE ID).
  • UE ID may include a C-RNTI (Cell-Radio Network Temporary Identifier).
  • C-RNTI Cell-Radio Network Temporary Identifier
  • the node information may include: a node ID and a node level; the node information of the AP may include an AP Point (Access Point Identity) and an AP level; the node information of the macro station may include a macro station ID and a macro station level.
  • Route identifier Node information of the previous hop node Node information of the next hop node UE information
  • Route ID AP ID, AP level AP ID, AP level UE ID
  • the node in this embodiment is an AP.
  • the routing information table for the UE generated by the AP records the node information of the previous hop node of the AP.
  • the AP can select the previous hop node according to the preset policy.
  • the one-hop node may be another AP or a macro station; wherein, when the previous hop node is an AP, the last hop AP may be a higher-level wireless access point having a context communication environment with the local AP, and the last hop AP It may also be the upper level wireless access point of the optimal channel quality corresponding to the AP.
  • the routing ID is used to distinguish different paths corresponding to the same UE. For example, when the same UE corresponds to four routing information tables on the local node, the routing ID may be set according to the sequence of each routing information table. 1, 2, 3 and 4.
  • the routing information corresponding to the UE generated and reported by the node may include: the ID of the local node, the level, and the ID of the UE.
  • the routing information corresponding to the UE generated and reported by the AP may be included. : AP ID, AP level, and UE ID corresponding to the AP.
  • the AP maintains its own routing information table.
  • the AP maintains a routing information table to perform corresponding updates as the UE or AP moves.
  • the routing information for the UE is reported to the AP of the previous layer by the AP of the next level, and is reported to the macro station or Donor.
  • FIG. 2 is a schematic structural diagram of routing information corresponding to a UE reported by an exemplary AP.
  • AP information corresponding to the AP UE information AP ID, AP level UE ID
  • the wireless communication method in this embodiment may further include one of the following:
  • the AP deletes the routing information table corresponding to the UE, and reports the routing information deletion notification for the UE to the previous hop node of the local AP.
  • the AP When receiving the routing information deletion notification for the UE reported by other APs, the AP deletes the routing information table corresponding to the UE.
  • the macro station is a macro station, and the macro station receives the routing information corresponding to the UE reported by the AP.
  • the routing information table corresponding to the UE is generated for the UE. That is, after receiving the routing information reported by the wireless access point of the first level, the macro station or the Donor establishes a mapping between the radio bearer of the user equipment and the routing information table, and provides routing guidance for multi-hop data transmission.
  • the routing information table may include: a routing ID, node information of a previous hop node, node information of a next hop node, and UE information; wherein the node information of the last hop node is empty.
  • a user equipment corresponds to a routing information table
  • the macro station or the Donor and the AP perform data routing according to the routing information table in which the user equipment is located, without performing optimal path selection.
  • one user equipment may correspond to multiple routing information tables, each routing information table being independent of each other, and the macro station or Donor and AP may be based on quality of service (Qos, Quality) The optimal path selection for the service, business requirements, etc.
  • Qos, Quality quality of service
  • a wireless communication link is used between the AP and the macro station or Donor, and between the AP and the AP.
  • the macro station works at a low frequency to provide wide coverage, and is connected to the core network through an S1 interface;
  • the AP works at a high frequency, has low transmission power, and has limited coverage, and is connected to the core network through a macro station or connected to the core network through an S1 interface;
  • Donor is a macro station or an AP with aggregation function.
  • FIG. 2 is a schematic structural diagram of a multi-hop wireless communication network according to an embodiment of the present application.
  • a wireless communication link is used between the wireless access point and the macro station or Donor, and the level is divided according to the hop count of the wireless access point to the macro station or Donor.
  • FIG. 2 only shows a three-layer network architecture, which is for illustrative purposes only and does not limit the application.
  • the following describes the routing information table establishment process, in which AP3 is located at the third level, AP2 is located at the second level, and AP1 is located at the first level.
  • the routing information table establishing process in this embodiment includes:
  • Step 310 the UE accesses the AP3.
  • Step 320 The AP3 generates a routing information table including the UE ID according to the access of the UE.
  • the routing information table is a routing table corresponding to the routing ID and the UE ID.
  • Table 3-1 lists the routing information table generated by AP3.
  • Route identifier Node information of the previous hop node NULL UE information Route ID AP2 ID, AP2 level NULL UE ID
  • the information of the wireless access point of the last hop of the AP3 is recorded in the routing information table, where the AP3 can select the wireless access point of the last hop according to a preset policy.
  • the wireless access point of the first hop of the AP3 may be the upper-level wireless access point with the context communication environment of the AP3, and the wireless access point of the last hop may be the upper level of the optimal channel quality corresponding to the AP3.
  • Wireless access point may be the upper-level wireless access point with the context communication environment of the AP3
  • the AP3 reports the routing information to the AP1's last hop wireless access point AP2;
  • AP2 Is a higher level wireless access point with a context communication environment with AP3;
  • the routing information reported by the AP3 includes the AP ID, the AP level, and the UE ID corresponding to the AP3.
  • Table 3-2 lists the routing information reported by AP3 to AP2.
  • AP3 information UE information AP3 ID, AP3 level UE ID
  • Step 340 The AP2 generates a routing information table including the UE ID according to the routing information reported by the AP3.
  • the routing information table is a routing table corresponding to the routing ID and the UE ID.
  • Table 3-3 lists the routing information table generated by AP2.
  • Route identifier Node information of the previous hop node Node information of the next hop node UE information Route ID AP1 ID, AP1 level AP3 ID, AP3 level UE ID
  • the wireless access point of the last hop of the AP2 may be the upper-level wireless access point with the context communication environment of the AP2, and the wireless access point of the last hop may also be the optimal channel quality corresponding to the AP2.
  • the wireless access point of the last hop of the AP2 is the wireless access point AP1 of the first level of the AP2.
  • the AP2 reports the routing information to the AP1 of the previous hop of the AP2;
  • the AP1 is the wireless access point of the upper layer having the context communication environment with the AP2;
  • the routing information reported by the AP2 includes the AP ID, the AP level, and the UE ID corresponding to the AP2.
  • Table 3-4 shows the routing information reported by AP2 to AP1.
  • the AP1 In step 360, the AP1 generates a routing information table including the UE ID according to the routing information reported by the AP2.
  • the routing information table is a routing table corresponding to the routing ID and the UE ID.
  • Table 3-5 lists the routing information table generated by AP1.
  • Route identifier Node information of the previous hop node Node information of the next hop node UE information
  • Route ID Macro station ID, macro station level AP2 ID, AP2 level UE ID
  • the node of the last hop of AP1 may be an AP or a macro station, where the wireless access point of the last hop of AP1 may be a wireless access point of a higher level with a context communication environment of AP1, the last hop The wireless access point may also be the upper level wireless access point of the optimal channel quality corresponding to AP1.
  • the last hop of AP1 is a node macro station of the upper level having a context communication environment with AP1.
  • Step 370 AP1 reports the routing information to the macro station.
  • the routing information reported by the AP1 includes the AP ID, the AP level, and the UE ID corresponding to the AP1.
  • the routing information reported by AP1 to the macro station is shown in Table 3-6.
  • Step 380 The macro station generates a routing information table including the UE ID according to the routing information reported by the AP1.
  • the routing information table is a routing table corresponding to the routing ID and the UEID.
  • the routing information table generated by the macro station is shown in Table 3-7.
  • Route identifier NULL Node information of the next hop node UE information Route ID NULL AP1 ID, AP1 level UE ID
  • the UE only needs to correspond to one optimal routing information table as an example.
  • one user equipment may correspond to multiple routing information tables, and in multi-hop data transmission, each wireless access point selects an optimal one.
  • the routing information table for the UE stored on each AP on the link needs to be deleted.
  • FIG. 3B is a schematic diagram of a process of deleting a routing information table in the embodiment.
  • Figure 3B is based on the figure The deletion process of the connection in 3A, as shown in FIG. 3B, the deletion process includes:
  • step 391 the UE accessing the AP3 disconnects from the AP3 due to the location movement.
  • Step 392 AP3 deletes the routing information table corresponding to the UE.
  • step 393 the AP3 reports the routing information deletion notification for the UE to the previous hop node AP2.
  • step 394 the AP2 deletes the routing information table corresponding to the UE.
  • step 395 the AP2 reports the routing information deletion notification for the UE to the previous hop node AP1.
  • step 396 the AP1 deletes the routing information table corresponding to the UE.
  • step 397 the AP1 reports the routing information deletion notification for the UE to the previous hop node macro station.
  • Step 398 The macro station deletes the routing information table corresponding to the UE.
  • the routing information table can be updated and maintained based on the following two manners.
  • Manner 1 After the AP detects the UE leaving, or receives the routing information deletion notification for the UE reported by the node of the next hop, the AP deletes the routing information table corresponding to the UE, and reports the routing information deletion notification for the UE to the UE. The last hop node.
  • each node on the original link is deleted.
  • the routing information table corresponding to the UE is set, and the routing information table corresponding to the UE is established on each node in the new link according to the re-access of the UE. That is to say, the original routing information table corresponding to the UE on the original link (AP3-AP2-AP1-macro station) will be deleted, and based on the UE's access in AP2, on the new link (AP2-AP1-macro station) Re-establishing the routing information table corresponding to the UE.
  • Manner 2 After the AP detects the UE leaving, or receives the routing information deletion notification for the UE reported by the node of the next hop, the AP starts the timer. If the timer expires and the UE is not connected to the AP, the AP deletes the AP. The routing information table corresponding to the UE, and the routing information deletion notification for the UE is reported to the previous hop node; if the AP detects that the UE is connected to the local AP before the timer expires, the AP updates the routing information table corresponding to the UE. .
  • the AP3 deletes the AP.
  • the routing information deletion notification for the UE is reported to the previous hop node AP2, and the AP2 starts a timer. If the timer is timed out and the UE is not connected to the AP2, the AP2 deletes the routing information table corresponding to the UE.
  • routing information deletion notification for the UE is reported to the previous hop node AP1; if the AP2 detects that the UE is connected to the local AP2 before the timer expires, the AP2 updates the routing information table corresponding to the UE. In this case, the AP2 does not continue to report the routing information deletion notification to the UE to the AP1.
  • routing information table corresponding to the UE stored in the original link (AP3-AP2-AP1-Mac) is deleted according to the process of FIG. 3B, and the routing information table corresponding to the UE is re-established and stored according to the process of FIG.
  • the routing information table in this example is established as follows:
  • Step 410 The UE accessing the AP3 accesses the AP2 due to the location movement.
  • the UE may also access other APs for other reasons, for example, the AP3 stops working, or the link connected to the AP3 has a problem, or the AP3 moves to another area.
  • Step 420 The AP2 generates a routing information table including the UE ID according to the access of the UE.
  • the routing information table is a routing table corresponding to the routing identifier and the UE ID.
  • Table 4-1 lists the routing information table generated by AP2.
  • Route identifier Node information of the previous hop node NULL UE information Route ID AP1 ID, AP1 level NULL UE ID
  • the routing information table records the information of the wireless access point AP1 of the last hop of the AP2.
  • AP1 is a higher-level wireless access point having a context communication environment with AP2;
  • the AP2 reports the routing information to the previous hop AP1 of the AP2.
  • the routing information reported by the AP2 may include the AP ID, the AP level, and the UE ID corresponding to the hop AP2. 4-2.
  • Step 440 The AP1 generates a routing information table including the UE ID according to the routing information reported by the AP2.
  • the routing information table is a routing table corresponding to the routing identifier and the UE ID.
  • Table 4-3 lists the routing information table generated by AP1.
  • Route identifier Node information of the previous hop node Node information of the next hop node UE information
  • Route ID Macro station ID, macro station level AP2 ID, AP2 level UE ID
  • the routing information table may include information of the last hop node of AP1.
  • the node of the upper level having the context communication environment with AP1 is a macro station.
  • Step 450 AP1 reports the routing information to the macro station.
  • the routing information reported by the AP1 includes the AP ID, the AP level, and the UE ID corresponding to the hop AP1.
  • the routing information reported by AP1 to the macro station is shown in Table 4-4.
  • Step 460 The macro station generates a routing information table including the UE ID according to the routing information reported by the AP1.
  • the routing information table is a routing table corresponding to the routing identifier and the UEID.
  • the routing information table generated by the macro station is shown in Table 4-5.
  • Route identifier NULL Node information of the next hop node UE information Route ID NULL AP1 ID, AP1 level UE ID
  • the embodiment provides a wireless communication method, which is applied to a node (for example, an AP or a macro station), and includes:
  • Step 510 The UE accesses the node, or the node receives the routing information corresponding to the UE reported by the other node.
  • Step 520 The node generates a routing information table corresponding to the UE.
  • Step 530 When receiving the data packet for the UE, the node selects a next hop node or a previous hop node according to the routing information table corresponding to the UE.
  • Step 540 The node encapsulates the data packet, and sends the encapsulated data packet to the next hop node or the last hop node of the node.
  • the data packet for the UE refers to a data packet to be sent to the UE or a data packet sent from the UE.
  • each node may generate a routing information table corresponding to the UE according to step 510 and step 520, and perform data transmission according to step 530 and step 540.
  • selecting the next hop node or the last hop node according to the routing information table may include:
  • the routing information table corresponding to the UE indicates that the next hop node or the last hop node of the local node includes multiple, select one of the next hop nodes or the last hop node according to the predetermined selection policy;
  • the routing information table corresponding to the UE indicates that the next hop node or the last hop node of the node is one, the node is used as the next hop node or the last hop node.
  • the routing information table corresponding to the UE may be as described above, and thus is not described herein again.
  • Each of the next hop nodes that can reach the UE is stored as a routing information table for the UE. If the multiple next hop nodes can reach the UE, the node may store multiple routing information tables for the UE.
  • the routing information table stored on the node carries the following UE information and node information of the next hop node: (UE1 ID, AP1 information), (UE1 ID, AP2 information), (UE1 ID, AP3 information), (UE2 ID) (AP2 information), (UE2 ID, AP3 information), (UE3 ID, AP1 information);
  • the parentheses are information carried in a routing information table, and it can be seen that the UE1 includes three routing paths, and can pass three
  • the nodes respectively reach the UE1, so the routing information table for the UE1 may indicate that the next hop includes three nodes, namely, AP1, AP2, and AP3;
  • the point may select one of AP1, AP2, and AP3 as the next hop node according to a predetermined selection policy.
  • the predetermined selection policy may include: selecting a next hop node or a previous hop node according to one or more of service QoS, delay, channel quality, and channel capacity.
  • the macro station or the Donor maps the UE ID and the route identifier, that is, the macro station finds the corresponding route identifier by using the UE ID, and selects a route that meets the requirement for the UE according to the foregoing policy, thereby determining the next hop node.
  • the node When the node is an AP, when the node receives a data packet for the UE sent by another AP or a macro station, the data packet is an AP MAC PDU frame, and when the node receives the AP MAC PDU frame, the node parses the AP MAC PDU.
  • the UE ID in the frame, and the corresponding routing information table is searched according to the UE ID; when the node receives the data packet sent by the UE, the data packet is a UE MAC PDU frame, where the node passes the correspondence between the UE and the radio bearer.
  • the UE corresponding to the data packet is confirmed, and the routing information table corresponding to the UE is obtained, so that the previous hop node is determined according to the routing information table corresponding to the UE.
  • the AP may be configured according to whether the uplink data is sent by the UE or other APs, and whether the received data packet is an AP MAC PDU frame or a UE MAC PDU frame, and then parsed according to a corresponding protocol; wherein, if the data packet is sent by the UE, the AP determines to receive.
  • the data packet is a UE MAC PDU frame. If the data packet is sent by the AP, it is determined that the received data packet is an AP MAC PDU frame.
  • the uplink data packet received by the AP for the UE is an AP MAC PDU frame, and the macro station parses the AP MAC PDU frame and encapsulates it into a UE MAC PDU frame, and then forwards the packet;
  • the data packet is a UE MAC PDU frame, and the macro station forwards the data packet according to the relevant protocol;
  • the macro station receives the data packet that needs to be sent to the UE, the macro station passes the UE and the radio bearer.
  • the UE corresponding to the data packet is confirmed, and the routing information table corresponding to the UE is obtained, so that the next hop node is determined according to the routing information table corresponding to the UE.
  • the macro station may determine whether the received data packet is an AP MAC PDU frame or a UE MAC PDU frame according to whether it is downlink data or uplink data, and whether the uplink data is sent by the UE or other APs, so as to be parsed according to the corresponding protocol. If it is downlink data, or is the uplink data sent by the UE, it is a UE MAC PDU frame, and if it is uplink data sent by the AP, it is an AP MAC PDU frame.
  • the node may encapsulate the data packet, which may include:
  • the data packet is encapsulated into an AP MAC PDU frame result, and the UE ID corresponding to the UE is carried in the AP MAC PDU frame structure.
  • the UE ID may include a Cell-Radio Network Temporary Identifier (C-RNTI).
  • C-RNTI Cell-Radio Network Temporary Identifier
  • the UE ID corresponding to the UE is carried in a MAC CE (Control Element) of an AP (Media Access Control) PDU (Protocol Data Unit).
  • the reserved 5 bit (Logical Channel Identity) is indicated.
  • FIG. 6A is a schematic structural diagram of an AP MAC PDU frame; as shown in FIG. 6A, an AP MAC PDU frame includes an AP MAC PDU header and an AP MAC payload;
  • the AP MAC PDU header includes an AP MAC PDU subheader and a UE MAC header (header) portion;
  • the AP MAC payload includes a MAC CE and a UE MAC payload portion; wherein the UE MAC payload portion includes a MAC CE, a MAC SDU (Service Data Unit, Service Data Unit) and Padding (optional) section.
  • the UE ID corresponding to the UE is set to be carried in the first MAC CE field of the AP MAC payload portion.
  • the AP MAC PDU frame structure is identical to the normal MAC PDU frame structure.
  • the 5 bit logical channel identifier (LCID) reserved in the AP MAC PDU subheader indicates
  • the content carried in the first MAC CE of the AP MAC payload part is the UE ID corresponding to the UE.
  • FIG. 6B is a schematic structural diagram of another exemplary AP MAC PDU frame; as shown in FIG. 6B, the AP MAC PDU frame structure is formed by cascading AP routing information and a common UE MAC PDU; placing AP routing information in a common UE
  • the front of the MAC PDU frame facilitates parsing and encapsulation of the PDU packet.
  • the AP MAC PDU frame includes the AP routing information and the UE MAC PDU frame part, and the AP routing information includes the AP header information and the MAC CE.
  • the 5 bit logical channel identifier (LCID) reserved in the AP header information is used.
  • the content of the MAC CE that is carried in the AP routing information is the UE ID corresponding to the UE.
  • the meaning of the LCID index representation is as described in Table 5.
  • the reserved 5 bits carries information indicating the UE ID.
  • Index (Index) LCID values 00000 CCCH 00001-01010 Identity of the logical channel 01011-11001 one of 5bit Indicate the UE ID 01011-11001 Reserved 11010 Long DRX Command 11011 Activation/Deactivation 11100 UE Contention Resolution Identity 11101 Timing Advance Command 11110 DRX Command 11111 Padding
  • the node after receiving the data packet for the UE, the node selects AP1 as the next hop node from AP1, AP2, and AP3 according to a predetermined selection policy.
  • the node encapsulates the data packet into the AP MAC PDU frame structure shown in FIG. 6A, and carries the UE ID corresponding to the UE in the first MAC CE of the AP MAC payload portion, and sends the encapsulated AP MAC PDU frame to the AP1.
  • the node when the node encapsulates the data packet, when the next hop node is an AP, the data packet is encapsulated into an AP MAC PDU frame structure, and when the next hop node is the UE, The data packet is encapsulated into a UE MAC PDU frame structure, and the UE MAC PDU frame structure follows the 3GPP 36.321 specification. As shown in FIG. 7, it is a schematic diagram of a UE MAC PDU frame structure.
  • FIG. 8 a schematic diagram of a multi-hop wireless communication protocol stack structure is provided in this embodiment. among them, The MAC marked by the dotted line indicates the new MAC function, which is used for parsing and encapsulating AP information.
  • the data transmission process in this embodiment is as follows:
  • Step 910 After receiving the downlink data packet for the UE, the macro station or the Donor encapsulates the downlink data packet AP MAC PDU, and encapsulates the UE ID corresponding to the UE into the AP MAC PDU data frame.
  • the macro station or Donor encapsulates the data packet according to the routing information table. If the next hop is an AP, the data packet is encapsulated into an AP MAC PDU frame structure, and the frame structure is as shown in FIG. 6A or FIG. 6B. Taking the AP MAC PDU frame structure shown in FIG. 6A as an example, the macro station or Donor carries the UE ID corresponding to the UE in the first MAC CE of the AP MAC payload portion, and sends the encapsulated AP MAC PDU frame to the AP1. .
  • step 920 the macro station or Donor sends the encapsulated AP MAC PDU data frame to AP1.
  • Step 930 AP1 parses the AP MAC PDU frame, obtains the UE ID carried in the data frame, and confirms that the node is not the last one of the data packet, and then confirms that the next hop node of the data packet is sent, and confirms the next packet of the data packet.
  • the hop node is the AP2
  • the data packet is encapsulated into an AP MAC PDU data frame, and the UE ID corresponding to the UE is encapsulated in the data frame.
  • step 940 AP1 sends the encapsulated AP MAC PDU data frame to AP2.
  • Step 950 AP2 parses the AP MAC PDU frame to confirm that the node is not the last one of the data packet, and then confirms that the next hop node of the data packet is sent, and after confirming that the next hop node of the data packet is AP3, the data packet is sent.
  • the packet is encapsulated into an AP MAC PDU data frame, and the UE ID corresponding to the UE is encapsulated in the data frame.
  • step 960 AP2 sends the encapsulated AP MAC PDU data frame to AP3.
  • Step 970 AP3 parses the AP MAC PDU frame, obtains the UE ID carried in the data frame, and confirms that the next hop is the last station of the data packet. After confirming that the next hop of the data packet is the UE, the data packet is encapsulated into UE MAC PDU data frame.
  • step 980 the AP3 sends the encapsulated UE MAC PDU data frame to the UE.
  • the data transmission process in this embodiment is as follows:
  • Step 1010 The UE sends an uplink data packet to the AP3.
  • Step 1020 After receiving the uplink data packet for the UE, the AP3 encapsulates the uplink data packet AP MAC PDU, and encapsulates the UE ID corresponding to the UE into the AP MAC PDU data frame.
  • the AP3 encapsulates the data packet into an AP MAC PDU frame structure, and the frame structure is as shown in FIG. 6A or FIG. 6B.
  • the frame structure is as shown in FIG. 6A or FIG. 6B.
  • AP3 carries the UE ID corresponding to the UE in the first MAC CE of the AP MAC payload portion, and sends the encapsulated AP MAC PDU frame to AP2.
  • step 1030 the AP3 sends the encapsulated AP MAC PDU data frame to the AP2.
  • Step 1040 AP2 parses the AP MAC PDU frame, obtains the UE ID carried in the data frame, performs a search in the routing information table according to the UE ID, and confirms that the previous hop node is AP1, and confirms the last hop of the data packet. After the node is the AP1, the data packet is encapsulated into an AP MAC PDU data frame, and the UE ID corresponding to the UE is encapsulated in the data frame.
  • step 1050 the AP2 sends the encapsulated AP MAC PDU data frame to the AP1.
  • Step 1060 AP1 parses the AP MAC PDU frame, obtains the UE ID carried in the data frame, performs a search in the routing information table according to the UE ID, and confirms that the last hop node is a macro station/Donor, and confirms the data packet. After the last hop node is a macro station or a Donor, the data packet is encapsulated into an AP MAC PDU data frame, and the UE ID corresponding to the UE is encapsulated in the data frame.
  • step 1070 AP1 sends the encapsulated AP MAC PDU data frame to the macro station or Donor.
  • the embodiment of the present invention further provides a wireless communication device, which is disposed on a node (for example, an AP or a macro station). As shown in FIG. 11, the device includes:
  • the access unit 1101 or the receiving unit 1102, the access unit 1101 is configured to implement UE access, and the receiving unit 1102 is configured to receive routing information corresponding to the UE reported by other nodes;
  • the establishing unit 1103 is configured to generate a routing information table corresponding to the UE after the UE accesses or the receiving unit 1102 receives the routing information corresponding to the UE reported by the other node.
  • the reporting unit 1104 is configured to: after the UE accesses or the receiving unit 1102 receives the routing information corresponding to the UE reported by the other node, the routing information corresponding to the UE to be reported by the local node is generated, and the generated routing information corresponding to the UE is reported. Give the previous hop node of this node.
  • the routing information table may include one or more of the following: a route ID, node information of a previous hop node, node information of a next hop node, and UE information.
  • the node information may include: a node ID and a node level; the node information of the AP may include an AP ID and an AP level; and the node information of the macro station may include a macro station ID and a macro station level.
  • the routing information corresponding to the UE reported by the reporting unit 1104 may include: an ID, a level, and an ID of the UE corresponding to the local node.
  • the wireless communication device provided in this embodiment may further include a maintenance unit, where the maintenance unit may include any one of the following modules:
  • the first maintenance module is configured to: after the UE disconnects from the local node, or when the receiving unit 1102 receives the routing information deletion notification for the UE reported by the other node, delete the routing information table corresponding to the UE, and The routing information deletion notification is reported to the previous hop node of the node;
  • the second maintenance module is configured to start a timer when the receiving unit 1102 receives the routing information deletion notification for the UE reported by the other node; if the timer expires, the UE does not connect to the local node, and deletes the routing information table corresponding to the UE. And the routing information deletion notification for the UE is reported to the previous hop node of the local node; if the local node detects that the UE is connected to the local node before the timer expires, the routing information table corresponding to the UE is updated.
  • the wireless communication apparatus provided in this embodiment may further include:
  • the acknowledgment unit 1105 is configured to: when the node receives the data packet for the UE, select the next hop node or the last hop node according to the routing information table corresponding to the UE;
  • Encapsulating unit 1106, configured to encapsulate a data packet
  • the forwarding unit 1107 is configured to send the encapsulated data packet to the next hop node or the last hop node.
  • the encapsulating unit 1106 may be configured to encapsulate the data packet by encapsulating the data packet into an AP MAC PDU frame structure when the next hop node or the last hop node is an AP or a macro station, and The UE ID corresponding to the UE is carried in the AP MAC PDU frame structure.
  • the UE ID corresponding to the UE may be carried in the MAC CE of the AP MAC PDU, and indicated by the reserved LCID.
  • the AP MAC PDU frame may include an AP MAC PDU header and an AP. MAC payload; wherein the AP MAC PDU header may include an AP MAC PDU subheader and a UE MAC header portion; the AP MAC payload may include a MAC CE and a UE MAC payload portion carrying the UE ID; wherein the UE MAC payload portion may include a MAC a CE, a MAC SDU, and a Padding portion, where the UE ID corresponding to the UE may be set to be carried in a first MAC CE field of the AP MAC payload portion;
  • the AP MAC PDU frame structure may be formed by cascading AP routing information and a common UE MAC PDU; the AP MAC PDU frame may include AP routing information and a UE MAC PDU frame portion, and the AP routing information includes the AP header information and the bearer.
  • the confirmation unit 1105 may include:
  • a routing information confirmation module configured to acquire a UE ID corresponding to the UE according to the data packet for the UE, and search for a routing information table corresponding to the UE ID;
  • a first confirmation module configured to: when the routing information table corresponding to the UE indicates that the next hop node or the last hop node includes multiple, select one of the nodes as the next hop node or the last hop node according to the predetermined selection policy;
  • the second confirmation module is configured to use the node as the next hop node or the last hop node when the routing information table corresponding to the UE indicates that the next hop node or the last hop node includes one.
  • the first confirmation module may be configured to select one of the nodes as the next hop node or the last hop node according to a predetermined selection policy by: one of service QoS, delay, channel quality, and channel capacity. Or multiple, select the next hop node or the last hop node.
  • the embodiment of the present application further provides a computer readable storage medium storing computer executable instructions, which are implemented by a processor to implement the wireless communication method.
  • computer storage medium includes volatile and nonvolatile, implemented in any method or technology for storing information, such as computer readable instructions, data structures, program modules or other data. Sex, removable and non-removable media.
  • Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridge, magnetic tape, magnetic disk storage or other magnetic storage device, or may Any other medium used to store the desired information and that can be accessed by the computer.
  • communication media typically includes computer readable instructions, data structures, program modules, or other data in a modulated data signal, such as a carrier wave or other transport mechanism, and can include any information delivery media. .
  • the embodiment of the present invention provides a wireless communication method and device, which does not need to be routed through IP, reduces the packet header overhead of the data packet, can perform routing through the bottom layer analysis, and does not need to obtain an IP address through high-level resolution, thereby effectively Improve the efficiency of data transmission.

Abstract

本文公开一种无线通信方法和装置；在UE接入节点时，触发节点建立基于节点信息以及UE ID的路由信息表，并且在多条路径上的节点分别维护各自的路由信息表，在数据传输过程中，节点根据自身维护的路由信息表进行路由选择，无需通过IP进行路由，减小了数据包的包头开销，通过底层的解析就能进行路由选择，不需要通过高层解析来获取IP地址，从而有效提高了数据传输的效率。

Description

一种无线通信方法及装置 技术领域
本申请涉及但不限于通信领域，尤指一种无线通信方法及装置。
背景技术
在无线通信系统中，超密集网络(UDN，Ultra Dense Network)是5G的核心技术之一，通过无线接入点的规模部署，可以大大降低用户接入的距离，从而提高用户的吞吐量以及区域的吞吐量(bps/km2)，是满足5G系统容量需求的关键技术。
对于无线接入点而言，由于其主要目的是满足高流量覆盖的需求，无线节点通过一跳无线路径接入宏站的方式，在超密集组网场景存在一定的问题：
首先，宏站一般是低频点工作提供广域覆盖，宏站带宽不会很大，满足不了高速率的传输需要；
其次，即使宏站支持高频大带宽的工作频点，但由于高频段情况下，波长短、损耗快，而且穿透能力差，受建筑物、树叶以及人体的遮挡效应明显等各种原因，相比传统低频段蜂窝系统，存在大量的覆盖阴影，也无法保证能为无线接入点提供稳定的高速率传输服务；
再次，宏站与无线接入点之间距离较远，一般要大于无线接入点到周围邻小站的距离，因此，从传播环境来看，宏站也不是一个很好的主基站(Donor eNB)的选项。
对于无线接入点来说，如果能选择周围邻近的小站作为Donor eNB，则由于二者距离较近，链路情况较好，可以支持大带宽高速率传输，是一种更优化的方法。如果无线接入点选择周围的邻区小站作为Donor eNB，邻小站由于功率或者频点原因导致覆盖有限，那么对于无线接入点来说，不一定能在一跳路径中选择到合适的Donor eNB，因此多跳路径将是超密集小站部署且存在部分无线接入点场景中的一种无法避免的方式。
多跳通信中，网络复杂度提升，上一跳的数据如何路由到下一跳，目前 使用较多的是基于IP(Internet Protocol，互联网协议)的路由机制，然而，基于IP的路由机制将带来较大的包头开销，需要解析到高层才能获取到IP地址，数据解析效率低。
发明概述
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本申请提出了一种无线通信方法及装置，能够提高路由机制的数据解析效率以及数据传输效率。
本申请实施例提出了一种无线通信方法，包括：
节点在用户设备(UE)接入后或者收到其他节点上报的UE对应的路由信息时，生成UE对应的路由信息表。
在示例性实施方式中，所述节点在UE接入后或者收到其他节点上报的UE对应的路由信息时，上述无线通信方法还可以包括：
所述节点生成本节点待上报的所述UE对应的路由信息，并将生成的所述UE对应的路由信息上报给本节点的上一跳节点，以便所述上一跳节点生成所述UE对应的路由信息表。
在示例性实施方式中，所述路由信息表可以包括以下一项或多项：路由ID、上一跳节点的节点信息、下一跳节点的节点信息、UE信息。
在示例性实施方式中，所述节点信息可以包括：节点ID和节点层级。
在示例性实施方式中，所述节点上报的UE对应的路由信息可以包括：所述节点的ID、层级以及所述UE的ID
在示例性实施方式中，所述节点生成所述UE对应的路由信息表之后，上述无线通信方法还可以包括：
根据如下方式中的一种对路由信息表进行维护：
方式一：所述节点在UE断开连接后或者收到其他节点上报的针对UE的路由信息删除通知时，删除所述UE对应的路由信息表，并将针对所述UE 的路由信息删除通知上报给所述节点的上一跳节点；
方式二：所述节点在收到其他节点上报的针对UE的路由信息删除通知时，启动定时器；若定时器超时，且所述UE没有连接至所述节点，则所述节点删除所述UE对应的路由信息表，并将针对所述UE的路由信息删除通知上报给所述节点的上一跳节点；若在所述定时器超时之前，所述节点检测到所述UE连接到本节点，则更新所述UE对应的路由信息表。
在示例性实施方式中，所述节点可以为无线接入点(AP)或宏站。
在示例性实施方式中，所述节点生成所述UE对应的路由信息表之后，上述无线通信方法还可以包括：
所述节点在接收到针对所述UE的数据包时，根据所述UE对应的路由信息表选择下一跳节点或上一跳节点；
所述节点对所述数据包进行封装，并将封装好的数据包发送到所述节点的下一跳节点或上一跳节点。
在示例性实施方式中，所述节点对所述数据包进行封装可以包括：
在所述下一跳节点或上一跳节点为AP或宏站时，将所述数据包封装成AP MAC PDU帧结构，并在所述AP MAC PDU帧结构中携带所述UE对应的UE ID。
在示例性实施方式中，所述UE对应的UE ID可以承载在AP MAC PDU的MAC CE里，通过预留的逻辑信道标识(LCID)进行指示。
在示例性实施方式中，所述AP MAC PDU帧结构可以包括AP MAC PDU头和AP MAC payload；所述AP MAC PDU头可以包括AP MAC PDU子头和UE MAC头；所述AP MAC payload可以包括承载所述UE ID的MAC CE和UE MAC payload；所述UE MAC payload至少可以包括MAC CE以及MAC SDU；所述UE对应的UE ID可以设置为承载在AP MAC payload的第一个MAC CE字段中；
或者，所述AP MAC PDU帧结构可以包括AP路由信息和UE MAC PDU，所述AP路由信息可以包括AP头信息和承载所述UE ID的MAC CE；其中，通过AP头信息中预留的LCID，指示承载在AP路由信息的MAC CE中的内 容为所述UE对应的UE ID。
在示例性实施方式中，所述节点根据所述UE对应的路由信息表选择下一跳节点或上一跳节点，可以包括：
根据针对所述UE的数据包获取所述UE对应的UE ID，查找所述UE ID对应的路由信息表；
当所述UE对应的路由信息表指示所述节点的下一跳节点或上一跳节点为多个时，根据预定的选择策略选择其中一个节点作为下一跳节点或上一跳节点；
当所述UE对应的路由信息表指示所述节点的下一跳节点或上一跳节点为一个时，将这个节点作为下一跳节点或上一跳节点。
在示例性实施方式中，所述根据预定的选择策略选择其中一个节点作为下一跳节点或上一跳节点，可以包括：
根据业务服务质量(QoS)、时延、信道质量、信道容量中的一个或多个，选取下一跳节点或上一跳节点。
本申请实施例还提出了一种无线通信装置，设置在节点上，包括：
接入单元或者接收单元，所述接入单元配置为实现UE接入，所述接收单元配置为接收其他节点上报的UE对应的路由信息；
建立单元，配置为在UE接入后或者所述接收单元收到其他节点上报的UE对应的路由信息时，生成所述UE对应的路由信息表。
在示例性实施方式中，上述无线通信装置还可以包括：
上报单元，配置为在UE接入后或者接收单元收到其他节点上报的UE对应的路由信息时，生成本节点待上报的所述UE对应的路由信息，并将生成的所述UE对应的路由信息上报给所述节点的上一跳节点。
在示例性实施方式中，所述路由信息表可以包括以下一项或多项：
路由ID、上一跳节点的节点信息、下一跳节点的节点信息、UE信息。
在示例性实施方式中，所述节点信息可以包括：节点ID和节点层级。
在示例性实施方式中，所述上报单元上报的UE对应的路由信息可以包 括：所述节点的ID、层级以及UE的ID。
在示例性实施方式中，上述无线通信装置还可以包括维护单元，其中，所述维护单元可以包括如下模块中的任一个：
第一维护模块，配置为在UE断开与本节点的连接后、或接收单元收到其他节点上报的针对UE的路由信息删除通知时，删除所述UE对应的路由信息表，并将针对所述UE的路由信息删除通知上报给本节点的上一跳节点；
第二维护模块，配置为在接收单元收到其他节点上报的针对UE的路由信息删除通知时，启动定时器；如果所述定时器超时，且所述UE没有连接至本节点，则删除所述UE对应的路由信息表，并将针对所述UE的路由信息删除通知上报给本节点的上一跳节点；如果在所述定时器超时之前，检测到所述UE连接至本节点，则更新所述UE对应的路由信息表。
在示例性实施方式中，所述节点可以为AP或宏站。
在示例性实施方式中，上述无线通信装置还可以包括：
确认单元，配置为在所述节点接收到针对所述UE的数据包时，根据所述UE对应的路由信息表选择下一跳节点或上一跳节点；
封装单元，配置为对所述数据包进行封装；
转发单元，配置为将封装好的数据包发送到所述节点的下一跳节点或上一跳节点。
在示例性实施方式中，所述封装单元可以配置为通过以下方式对所述数据包进行封装：
在所述下一跳节点或上一跳节点为AP或宏站时，将所述数据包封装成AP MAC PDU帧结构，并在所述AP MAC PDU帧结构中携带所述UE对应的UE ID。
在示例性实施方式中，所述确认单元可以包括：
路由信息确认模块，配置为根据针对所述UE的数据包获取所述UE对应的UE ID，查找所述UE ID对应的路由信息表；
第一确认模块，配置为当所述UE对应的路由信息表指示所述节点的下 一跳节点或上一跳节点为多个时，根据预定的选择策略选择其中一个节点作为下一跳节点或上一跳节点；
第二确认模块，配置为当所述UE对应的路由信息表指示所述节点的下一跳节点或上一跳节点为一个时，将这个节点作为下一跳节点或上一跳节点。
在示例性实施方式中，所述第一确认模块可以配置为通过以下方式根据预定的选择策略选择其中一个节点作为下一跳节点或上一跳节点：
根据业务QoS、时延、信道质量、信道容量中的一个或多个，选取下一跳节点或上一跳节点。
本申请实施例还提供一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令被处理器执行时实现上述的无线通信方法。
通过本申请的方案，在UE接入节点时，触发节点建立基于节点信息以及UE ID的路由信息表，并且在多条路径上的节点分别维护各自的路由信息表，在数据传输过程中，各个节点(比如，宏站/Donor、无线接入点)根据自身维护的路由信息表进行路由选择，无需通过IP进行路由，减小了数据包的包头开销，通过底层的解析就能进行路由选择，不需要通过高层解析来获取IP地址，从而有效提高了数据传输的效率。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图概述
下面对本申请实施例中的附图进行说明，实施例中的附图是用于对本申请的进一步理解，与说明书一起用于解释本申请，并不构成对本申请保护范围的限制。
图1为本发明实施例提供的一种无线通信方法的流程图；
图2为本申请提供的多跳无线通信网络架构示意图；
图3A为本申请实施例中路由信息表的建立流程示意图；
图3B为本申请实施例中路由信息表的删除流程示意图；
图4为本申请实施例中路由信息表的另一种建立流程示意图；
图5为本申请实施例提供的另一种无线通信方法的流程图；
图6A为示例性的AP MAC PDU帧结构示意图；
图6B为另一种示例性的AP MAC PDU帧结构示意图；
图7为UE MAC PDU帧结构示意图；
图8为本申请实施例的多跳无线通信协议栈架构示意图；
图9为本申请实施例中数据传输的一种流程示意图；
图10为本申请实施例中数据传输的另一种流程示意图；
图11为本申请实施例提供的一种无线通信装置的示意图；
图12为本申请实施例提供的另一种无线通信装置的示意图。
详述
为了便于本领域技术人员的理解，下面结合附图对本申请作进一步的描述，并不能用来限制本申请的保护范围。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的各种方式可以相互组合。
参见图1，本申请实施例提出了一种无线通信方法，包括：
步骤100，用户设备(UE，User Equipment)接入节点，或者，节点收到其他节点上报的UE对应的路由信息；
步骤200，节点生成UE对应的路由信息表。
本实施例的节点可以为无线接入点(AP，Access Point)或者宏站。当节点为AP时，节点的上一跳节点可以为其他AP或者宏站。
步骤100之后，本实施例提供的无线通信方法还可以包括：
节点生成本节点待上报的UE对应的路由信息，并将生成的该UE对应的路由信息上报给本节点的上一跳节点，以便上一跳节点生成该UE对应的路由信息表。
换言之，步骤100之后，节点将本节点生成的UE对应的路由信息上报给上一跳节点。需要说明的是，本申请对于节点生成UE对应的路由信息、生成UE对应的路由信息表的先后顺序并不限定。比如，在步骤200后生成 UE对应的路由信息并将该路由信息上报给上一跳节点；或者，在步骤100之后步骤200之前生成UE对应的路由信息并将该路由信息上报给上一跳节点。
其中，所述路由信息表可以用于指示多跳数据传输中上一跳或下一跳节点。
其中，所述路由信息表可以包括以下一项或多项：路由标识(ID)、上一跳节点的节点信息、下一跳节点的节点信息、UE信息。比如，第一个节点的路由信息表可以不包括下一跳节点的节点信息；最后一个节点(比如，宏站)的路由信息表可以不包括上一跳节点的节点信息。
其中，UE信息可以包括用户设备标识(UE ID，User Equipment Identity)。UE ID可以包括C-RNTI(Cell-Radio Network Temporary Identifier，小区无线网络临时标识)。
其中，所述节点信息可以包括：节点ID和节点层级；AP的节点信息可以包括AP ID(Access Point Identity)和AP层级；宏站的节点信息可以包括宏站ID和宏站层级。
参见表1，为示例性的路由信息表的结构示意图。
路由标识 上一跳节点的节点信息 下一跳节点的节点信息 UE信息
路由ID AP ID，AP层级 AP ID，AP层级 UE ID
表1
以本实施例的节点为AP为例，AP生成的针对UE的路由信息表中记录了本AP的上一跳节点的节点信息，其中，AP可以根据预先设置的策略选择上一跳节点，上一跳节点可能是其他AP或宏站；其中，当上一跳节点是AP时，该上一跳AP可以是与本AP有上下文通信环境的上一层级的无线接入点，上一跳AP也可以是本AP对应的最优信道质量的上一层级的无线接入点。
其中，路由ID用于区分同一个UE对应的不同路径，例如，当同一个UE在本节点上对应4个路由信息表时，路由ID可以根据每个路由信息表建立的先后顺序，分别设置为1、2、3和4。
本实施例中，节点生成并上报的UE对应的路由信息可以包括：本节点的ID、层级以及UE的ID；比如，以节点为AP为例，AP生成并上报的UE对应的路由信息可以包括：该AP对应的AP ID、AP层级以及UE的ID。
其中，AP维护各自的路由信息表，随着UE或者AP的移动，AP维护路由信息表执行相应更新。
其中，针对UE的路由信息由下一层级的AP上报给上一层级的AP，一直上报到宏站或Donor为止。
参见表2，为示例性的AP上报的UE对应的路由信息的结构示意图。
本AP对应的AP信息 UE信息
AP ID，AP层级 UE ID
表2
以本实施例的节点为AP为例，本实施例的无线通信方法还可以包括以下之一：
AP在UE断开连接后，删除UE对应的路由信息表，并将针对UE的路由信息删除通知上报给本AP的上一跳节点；
AP收到其他AP上报的针对UE的路由信息删除通知时，删除UE对应的路由信息表。
以本实施例的节点为宏站为例，宏站接收AP上报的UE对应的路由信息；在收到AP上报的UE对应的路由信息时，针对所述UE生成UE对应的路由信息表。也就是说，宏站或Donor接收到第一层级的无线接入点上报的路由信息后，建立用户设备无线承载与所述路由信息表的映射，为多跳数据传输提供路由指导。其中，所述路由信息表可以包括：路由ID、上一跳节点的节点信息、下一跳节点的节点信息以及UE信息；其中，上一跳节点的节点信息为空。
本实施例中，一个用户设备对应一个路由信息表，宏站或Donor和AP按照所述用户设备所在的路由信息表进行数据路由，无需进行最优路径选择。
在示例性实施方式中，一个用户设备可以对应多个路由信息表，每个路由信息表相互独立，所述宏站或Donor和AP可根据服务质量(Qos，Quality  of Service)、业务需求等进行最优路径选择。
AP与宏站或Donor之间，以及AP与AP之间采用无线通信链路。
所述宏站工作在低频提供广覆盖，通过S1接口与核心网连接；AP工作在高频，发射功率低功，覆盖有限，通过宏站连接到核心网或通过S1接口连接到核心网；所述Donor为宏站或者具有汇聚功能的AP。
下面结合实施场景进行说明。
图2为本申请实施例提供的多跳无线通信网络架构示意图。其中，无线接入点与宏站或Donor之间采用无线通信链路，根据无线接入点到宏站或Donor的跳数划分层级。图2仅给出了三层网络架构，仅用于示例性说明，并不对本申请构成限制。
基于图2给出的无线通信网络架构示意图，下面对路由信息表建立过程进行说明，其中，AP3位于第三层级，AP2位于第二层级，AP1位于第一层级。
参见图3A，本实施例的路由信息表建立过程包括：
步骤310，UE接入AP3；
步骤320，AP3根据UE的接入，生成包含UE ID的路由信息表。路由信息表为路由ID与UE ID对应的路由表。
其中，AP3生成的路由信息表如表3-1所示。
路由标识 上一跳节点的节点信息 NULL UE信息
路由ID AP2 ID，AP2层级 NULL UE ID
表3-1
其中，路由信息表中记录了AP3的上一跳的无线接入点的信息，其中，AP3可以根据预先设置的策略选择上一跳的无线接入点。例如，AP3上一跳的无线接入点可以是与AP3有上下文通信环境的上一层级的无线接入点，上一跳的无线接入点可以是AP3对应的最优信道质量的上一层级的无线接入点。
步骤330，AP3将路由信息上报给AP3的上一跳的无线接入点AP2；AP2 是与AP3有上下文通信环境的上一层级的无线接入点；
其中，AP3上报的路由信息包括AP3对应的AP ID、AP层级和UE ID；
其中，AP3上报给AP2的路由信息如表3-2所示。
AP3信息 UE信息
AP3 ID，AP3层级 UE ID
表3-2
步骤340，AP2根据AP3上报的路由信息，生成包含UE ID的路由信息表。路由信息表为路由ID与UE ID对应的路由表。
其中，AP2生成的路由信息表如表3-3所示。
路由标识 上一跳节点的节点信息 下一跳节点的节点信息 UE信息
路由ID AP1 ID，AP1层级 AP3 ID，AP3层级 UE ID
表3-3
其中，AP2的上一跳的无线接入点可以是与AP2有上下文通信环境的上一层级的无线接入点，上一跳的无线接入点也可以是AP2对应的最优信道质量的上一层级的无线接入点。本实施例中，AP2的上一跳的无线接入点为AP2上一层级的无线接入点AP1。
步骤350，AP2将路由信息上报给AP2上一跳的AP1；AP1是与AP2有上下文通信环境的上一层级的无线接入点；
其中，AP2上报的路由信息包括AP2对应的AP ID、AP层级和UE ID；
其中，AP2上报给AP1的路由信息如表3-4所示。
AP2信息 UE信息
AP2ID，AP2层级 UE ID
表3-4
步骤360，AP1根据AP2上报的路由信息，生成包含UE ID的路由信息表。路由信息表为路由ID与UE ID对应的路由表。
其中，AP1生成的路由信息表如表3-5所示。
路由标识 上一跳节点的节点信息 下一跳节点的节点信息 UE信息
路由ID 宏站ID，宏站层级 AP2 ID，AP2层级 UE ID
表3-5
其中，AP1的上一跳的节点可能是AP或宏站，其中，AP1的上一跳的无线接入点可以是与AP1有上下文通信环境的上一层级的无线接入点，上一跳的无线接入点也可以是AP1对应的最优信道质量的上一层级的无线接入点。本实施例中，AP1的上一跳为与AP1有上下文通信环境的上一层级的节点宏站。
步骤370，AP1将路由信息上报给宏站；
其中，AP1上报的路由信息包括AP1对应的AP ID、AP层级和UE ID；
其中，AP1上报给宏站的路由信息如表3-6所示。
AP1信息 UE信息
AP1 ID，AP1层级 UE ID
表3-6
步骤380，宏站根据AP1上报的路由信息，生成包含UE ID的路由信息表。路由信息表为路由ID与UEID对应的路由表。
其中，宏站生成的路由信息表如表3-7所示。
路由标识 NULL 下一跳节点的节点信息 UE信息
路由ID NULL AP1 ID，AP1层级 UE ID
表3-7
上述实施例中，以UE仅对应一个最优路由信息表为例进行说明；此外，一个用户设备可以对应多个路由信息表，多跳数据传输中，由每个无线接入点选择最优下一跳节点或上一跳节点。
当UE位置移动造成UE连接的AP发生变化时，需要对链路上每个AP存储的针对该UE的路由信息表进行删除。
图3B为本实施例中路由信息表的删除过程的示意图。图3B为基于图 3A中的连接的删除过程，如图3B所示，所述删除过程包括：
步骤391，接入到AP3的UE由于位置移动，断开与AP3之间的连接。
步骤392，AP3删除UE对应的路由信息表。
步骤393，AP3将针对UE的路由信息删除通知上报给上一跳节点AP2。
步骤394，AP2删除UE对应的路由信息表。
步骤395，AP2将针对UE的路由信息删除通知上报给上一跳节点AP1。
步骤396，AP1删除UE对应的路由信息表。
步骤397，AP1将针对UE的路由信息删除通知上报给上一跳节点宏站。
步骤398，宏站删除UE对应的路由信息表。
本实施例中，可以基于以下两种方式对路由信息表进行更新和维护。
方式一：AP在检测到UE离开，或者接收到下一跳的节点上报的针对UE的路由信息删除通知之后，该AP删除UE对应的路由信息表，并将针对UE的路由信息删除通知上报给上一跳节点。
本实施例中，如果UE从AP3离开之后，连接至原链路中的其他AP，例如连接至AP2，如果按照方式一对路由信息表进行更新和维护，将删除原有链路上每个节点上该UE对应的路由信息表，并根据UE的重新接入，在新的链路中的每个节点上建立该UE对应的路由信息表。也就是说，原链路(AP3-AP2-AP1-宏站)上原有的UE对应的路由信息表将被删除，并基于UE在AP2的接入，在新链路(AP2-AP1-宏站)上重新建立UE对应的路由信息表。
方式二：AP在检测到UE离开，或者接收到下一跳的节点上报的针对UE的路由信息删除通知之后，AP启动定时器，如果定时器超时，UE没有连接至该AP，则该AP删除UE对应的路由信息表，并将针对UE的路由信息删除通知上报给上一跳节点；如果在定时器超时之前，AP检测到该UE连接至本AP，则该AP更新UE对应的路由信息表。
本实施例中，如果UE从AP3离开之后，连接至原链路中的其他AP，例如连接至AP2，如果按照方式二对路由信息表进行更新和维护，AP3将删 除UE对应的路由信息表，并将针对UE的路由信息删除通知上报给上一跳节点AP2，AP2启动定时器，如果定时器超时，UE没有连接至AP2，则AP2删除UE对应的路由信息表，并将针对UE的路由信息删除通知上报给上一跳节点AP1；如果在定时器超时之前，AP2检测到该UE连接至本AP2，则该AP2更新UE对应的路由信息表。这种情况下，AP2不会继续上报针对UE的路由信息删除通知给AP1。
下面结合附图以方式一为例进行说明。其中，按照图3B的流程删除原有的链路(AP3-AP2-AP1-宏站)上存储的UE对应的路由信息表，并按照图4的流程重新建立并存储UE对应的路由信息表。参见图4，本示例中路由信息表的建立过程如下：
步骤410，接入到AP3的UE由于位置移动，接入AP2。
除了UE的位置移动，UE也可能因为其他的原因接入到其他的AP，例如，AP3停止工作，或者AP3连接的链路出现问题，或者AP3移动到其他区域。
步骤420，AP2根据UE的接入，生成包含UE ID的路由信息表。路由信息表为路由标识与UE ID对应的路由表。
其中，AP2生成的路由信息表如表4-1所示。
路由标识 上一跳节点的节点信息 NULL UE信息
路由ID AP1 ID，AP1层级 NULL UE ID
表4-1
其中，路由信息表中记录了AP2的上一跳的无线接入点AP1的信息。AP1是与AP2有上下文通信环境的上一层级的无线接入点；
步骤430，AP2将路由信息上报给AP2的上一跳AP1；其中，AP2上报的路由信息可以包括本跳AP2对应的AP ID、AP层级和UE ID；其中，AP2上报给AP1的路由信息如表4-2所示。
AP2信息 UE信息
AP2 ID，AP2层级 UE ID
表4-2
步骤440，AP1根据AP2上报的路由信息，生成包含UE ID的路由信息表。路由信息表为路由标识与UE ID对应的路由表。
其中，AP1生成的路由信息表如表4-3所示。
路由标识 上一跳节点的节点信息 下一跳节点的节点信息 UE信息
路由ID 宏站ID，宏站层级 AP2 ID，AP2层级 UE ID
表4-3
路由信息表中可以包括AP1的上一跳节点的信息，本示例中，与AP1有上下文通信环境的上一层级的节点为宏站。
步骤450，AP1将路由信息上报给宏站；
其中，AP1上报的路由信息包括本跳AP1对应的AP ID、AP层级和UE ID；
其中，AP1上报给宏站的路由信息如表4-4所示。
AP1信息 UE信息
AP1 ID，AP1层级 UE ID
表4-4
步骤460，宏站根据AP1上报的路由信息，生成包含UE ID的路由信息表。路由信息表为路由标识与UEID对应的路由表。
其中，宏站生成的路由信息表如表4-5所示。
路由标识 NULL 下一跳节点的节点信息 UE信息
路由ID NULL AP1 ID，AP1层级 UE ID
表4-5
参见图5，本实施例提出了一种无线通信方法，应用于节点(比如，AP或宏站)，包括：
步骤510，UE接入节点，或者，节点收到其他节点上报的UE对应的路由信息；
步骤520，节点生成UE对应的路由信息表；
步骤530，节点在接收到针对UE的数据包时，根据UE对应的路由信息表选择下一跳节点或上一跳节点；
步骤540，节点对数据包进行封装，并将封装好的数据包发送到本节点的下一跳节点或上一跳节点。
关于步骤510和步骤520的说明可以参照图1对应的实施例描述，故于此不再赘述。
步骤530中，针对UE的数据包是指要发送给UE的数据包或者从UE发出的数据包。
本实施例中，各个节点可以根据步骤510和步骤520各自生成UE对应的路由信息表，并按照步骤530和步骤540进行数据传输。
步骤530中，根据路由信息表选择下一跳节点或上一跳节点可以包括：
根据针对UE的数据包中携带的UE对应的UE ID，查找所述UE ID对应的路由信息表；
当UE对应的路由信息表指示本节点的下一跳节点或上一跳节点包括多个时，根据预定的选择策略选择其中一个作为下一跳节点或上一跳节点；
当UE对应的路由信息表指示本节点的下一跳节点或上一跳节点为一个时，将这个节点作为下一跳节点或上一跳节点。
其中，UE对应的路由信息表可以如前所述，故于此不再赘述。
每一条能够到达UE的下一跳节点对应存储为一个针对UE的路由信息表，如果能够通过多个下一跳节点到达UE，则节点中可以存储有多个针对UE的路由信息表。
例如，节点上存储的路由信息表分别携带以下UE信息和下一跳节点的节点信息：(UE1 ID，AP1信息)，(UE1 ID，AP2信息)，(UE1 ID，AP3信息)，(UE2 ID，AP2信息)，(UE2 ID，AP3信息)，(UE3 ID，AP1信息)；括号内为一个路由信息表对应携带的信息，由此可以看出针对UE1包括3条路由路径，能够通过3个节点分别到达UE1，因此针对UE1的路由信息表可以指示下一跳包括3个节点，分别为AP1、AP2和AP3；节 点可以根据预定的选择策略从AP1、AP2和AP3中选择一个作为下一跳节点。
其中，所述预定的选择策略可以包括：根据业务QoS、时延、信道质量、信道容量中的一个或多个，选取下一跳节点或上一跳节点。比如，宏站或Donor将UE ID与路由标识进行映射，即宏站通过UE ID找到对应的路由标识，根据上述策略选择针对该UE的一条满足要求的路由，从而确定下一跳节点。
在上述节点为AP时，在该节点收到其他AP或宏站发送的针对UE的数据包时，数据包为AP MAC PDU帧，该节点在接收到AP MAC PDU帧时，将解析AP MAC PDU帧中的UE ID，并根据UE ID查找对应的路由信息表；在该节点收到UE发送的数据包时，数据包为UE MAC PDU帧，其中，该节点通过UE与无线承载的对应关系，确认数据包对应的UE，并获取UE对应的路由信息表，从而根据UE对应的路由信息表确定上一跳节点。
其中，AP可以根据上行数据是UE还是其他AP发出，确定接收的数据包是AP MAC PDU帧还是UE MAC PDU帧，从而按照对应的协议进行解析；其中，如果数据包是UE发出，则确定接收的数据包为UE MAC PDU帧，如果数据包是AP发出，则确定接收的数据包为AP MAC PDU帧。
在上述节点为宏站时，在该节点接收到AP发送的上行的针对UE的数据包为AP MAC PDU帧，宏站将解析AP MAC PDU帧，并封装为UE MAC PDU帧之后转发；在该节点接收到UE发送的上行数据包时，数据包为UE MAC PDU帧，宏站按照相关协议转发数据包；在宏站接收到需要发送给UE的数据包时，宏站通过UE与无线承载的对应关系，确认数据包对应的UE，并获取UE对应的路由信息表，从而根据UE对应的路由信息表确定下一跳节点。
其中，宏站可以根据是下行数据还是上行数据，以及上行数据是UE还是其他AP发出，确定接收的数据包是AP MAC PDU帧还是UE MAC PDU帧，从而按照对应的协议进行解析。其中，如果是下行数据，或者是UE发送的上行数据，则为UE MAC PDU帧，如果是AP发送的上行数据，则为AP MAC PDU帧。
步骤540中，节点对数据包进行封装可以包括：
当本节点的下一跳节点或上一跳节点为AP或宏站时，将数据包封装成AP MAC PDU帧结果，并在所述AP MAC PDU帧结构中携带UE对应的UE ID。
其中，所述UE ID可以包括小区无线网络临时标识(C-RNTI，Cell-Radio Network Temporary Identifier)。
下面结合示例进行说明。
在示例性实施方式中，将UE对应的UE ID承载在AP MAC(Media Access Control，介质访问控制)PDU(Protocol Data Unit，协议数据单元)的MAC CE(Control Element，控制单元)里，通过预留的5bit(位)逻辑信道标识(LCID，Logical Channel Identity)进行指示。
图6A为示例性的AP MAC PDU帧结构示意图；如图6A所示，AP MAC PDU帧包括AP MAC PDU头和AP MAC有效载荷(payload)；
其中，AP MAC PDU头包括AP MAC PDU子头和UE MAC header(头)部分；AP MAC payload包括MAC CE和UE MAC payload部分；其中，UE MAC payload部分包括MAC CE、MAC SDU(Service Data Unit，服务数据单元)和填充(Padding)(可选)部分。其中，UE对应的UE ID设置为承载在AP MAC payload部分的第一个MAC CE字段中。
该AP MAC PDU帧结构与普通的MAC PDU帧结构完全一致，在普通UE MAC PDU帧结构的基础上，通过AP MAC PDU子头中预留的5bit逻辑信道标识(LCID，Logical Channel Identity)，指示承载在AP MAC payload部分的第一个MAC CE中的内容为UE对应的UE ID。
图6B为另一种示例性的AP MAC PDU帧结构示意图；如图6B所示，AP MAC PDU帧结构由AP路由信息和普通的UE MAC PDU级联而成；将AP路由信息放在普通UE MAC PDU帧的前面，便于PDU包的解析和封装。
其中，AP MAC PDU帧包括AP路由信息和UE MAC PDU帧部分，AP路由信息包括AP头信息和MAC CE；其中，通过AP头信息中预留的5bit逻辑信道标识(LCID，Logical Channel Identity)，指示承载在AP路由信息中MAC CE中的内容为UE对应的UE ID。
其中，LCID索引表示的含义如表5所述。其中，预留的5bit中携带有指示UE ID的信息。
索引(Index) LCID values
00000 CCCH
00001-01010 Identity of the logical channel
01011-11001其中一个5bit 指示UE ID
01011-11001 Reserved
11010 Long DRX Command
11011 Activation/Deactivation
11100 UE Contention Resolution Identity
11101 Timing Advance Command
11110 DRX Command
11111 Padding
表5LCID索引的具体含义
下面结合上面步骤530中提及的示例进行说明。
在上面步骤530中的示例基础上，节点接收到针对UE的数据包之后，根据预定的选择策略从AP1、AP2和AP3中选择AP1作为下一跳节点。节点将数据包封装为图6A所示的AP MAC PDU帧结构，将UE对应的UE ID承载在AP MAC payload部分的第一个MAC CE中，并将封装好的AP MAC PDU帧发送给AP1。
需要说明的是，本实施例中，节点对数据包进行封装时，在下一跳节点为AP的情况下，将数据包封装成AP MAC PDU帧结构，在下一跳节点为UE的情况下，将数据包封装成UE MAC PDU帧结构，UE MAC PDU帧结构遵循3GPP 36.321规范。如图7所示，为UE MAC PDU帧结构示意图。
下面以图2所示的三层网络架构为例，结合实施场景进行说明。
参见图8，为本实施例提供的多跳无线通信协议栈架构示意图。其中， 虚线框标出的MAC表示新增的MAC功能，用于AP信息的解析与封装。
参见图9，本实施例中的数据传输过程如下：
步骤910，宏站或Donor接收到针对UE的下行数据包之后，进行下行数据包AP MAC PDU的封装，将UE对应的UE ID封装到AP MAC PDU数据帧中。
其中，所述宏站或Donor根据路由信息表进行数据包的封装，如果下一跳是AP，则将数据包封装成AP MAC PDU帧结构，帧结构如图6A或图6B所示。以图6A所示的AP MAC PDU帧结构为例，宏站或Donor将UE对应的UE ID承载在AP MAC payload部分的第一个MAC CE中，并将封装好的AP MAC PDU帧发送给AP1。
步骤920，宏站或Donor将封装好的AP MAC PDU数据帧发送给AP1。
步骤930，AP1对AP MAC PDU帧进行解析，获取数据帧中携带的UE ID，确认本节点不是数据包的最后一转，则确认发送数据包的下一跳节点，在确认数据包的下一跳节点为AP2后，将数据包封装成AP MAC PDU数据帧，并在数据帧中封装UE对应的UE ID。
步骤940，AP1将封装好的AP MAC PDU数据帧发送给AP2。
步骤950，AP2对AP MAC PDU帧进行解析，确认本节点不是数据包的最后一转，则确认发送数据包的下一跳节点，在确认数据包的下一跳节点为AP3后，将数据包封装成AP MAC PDU数据帧，并在数据帧中封装UE对应的UE ID。
步骤960，AP2将封装好的AP MAC PDU数据帧发送给AP3。
步骤970，AP3对AP MAC PDU帧进行解析，获取数据帧中携带的UE ID，确认下一跳是数据包的最后一站，在确认数据包的下一跳为UE后，将数据包封装成UE MAC PDU数据帧。
步骤980，AP3将封装好的UE MAC PDU数据帧发送给UE。
下面结合一个上行的示例进行说明。
参见图10，本实施例中的数据传输过程如下：
步骤1010，UE将上行数据包发送给AP3；
步骤1020，AP3接收到针对UE的上行数据包之后，进行上行数据包AP MAC PDU的封装，将UE对应的UE ID封装到AP MAC PDU数据帧中。
其中，AP3将数据包封装成AP MAC PDU帧结构，帧结构如图6A或图6B所示。以图6A所示的AP MAC PDU帧结构为例，AP3将UE对应的UE ID承载在AP MAC payload部分的第一个MAC CE中，并将封装好的AP MAC PDU帧发送给AP2。
步骤1030，AP3将封装好的AP MAC PDU数据帧发送给AP2。
步骤1040，AP2对AP MAC PDU帧进行解析，获取数据帧中携带的UE ID，根据所述UE ID在路由信息表中进行查找，确认上一跳节点为AP1，在确认数据包的上一跳节点为AP1后，将数据包封装成AP MAC PDU数据帧，并在数据帧中封装UE对应的UE ID。
步骤1050，AP2将封装好的AP MAC PDU数据帧发送给AP1。
步骤1060，AP1对AP MAC PDU帧进行解析，获取数据帧中携带的UE ID，根据所述UE ID在路由信息表中进行查找，确认上一跳节点为宏站/Donor，在确认数据包的上一跳节点为宏站或Donor后，将数据包封装成AP MAC PDU数据帧，并在数据帧中封装UE对应的UE ID。
步骤1070，AP1将封装好的AP MAC PDU数据帧发送给宏站或Donor。
基于与上述实施例相同或相似的构思，本发明实施例还提供一种无线通信装置，设置在节点(比如，AP或宏站)上，如图11所示，该装置包括：
接入单元1101或接收单元1102，接入单元1101配置为实现UE接入，接收单元1102配置为接收其他节点上报的UE对应的路由信息；
建立单元1103，配置为在UE接入后或者接收单元1102收到其他节点上报的UE对应的路由信息时，生成UE对应的路由信息表。
本实施例提供的无线通信装置还可以包括：
上报单元1104，配置为在UE接入后或者接收单元1102收到其他节点上报的UE对应的路由信息时，生成本节点待上报的UE对应的路由信息，并将生成的UE对应的路由信息上报给本节点的上一跳节点。
本实施例中，所述路由信息表可以包括以下一项或多项：路由ID、上一跳节点的节点信息、下一跳节点的节点信息、UE信息。
其中，所述节点信息可以包括：节点ID和节点层级；AP的节点信息可以包括AP ID和AP层级；宏站的节点信息可以包括宏站ID和宏站层级。
本实施例中，上报单元1104上报的UE对应的路由信息可以包括：本节点对应的ID、层级以及UE的ID。
本实施例提供的无线通信装置还可以包括维护单元，其中，所述维护单元可以包括如下模块中的任一个：
第一维护模块，配置为在UE断开与本节点的连接后、或接收单元1102收到其他节点上报的针对UE的路由信息删除通知时，删除UE对应的路由信息表，并将针对UE的路由信息删除通知上报给本节点的上一跳节点；
第二维护模块，配置为在接收单元1102收到其他节点上报的针对UE的路由信息删除通知时，启动定时器；如果定时器超时，UE没有连接至本节点，则删除UE对应的路由信息表，并将针对UE的路由信息删除通知上报给本节点的上一跳节点；如果在定时器超时之前，本节点检测到UE连接至本节点，则更新UE对应的路由信息表。
如图12所示，本实施例提供的无线通信装置还可以包括：
确认单元1105，配置为在节点接收到针对UE的数据包时，根据UE对应的路由信息表选择下一跳节点或上一跳节点；
封装单元1106，配置为对数据包进行封装；
转发单元1107，配置为将封装好的数据包发送到下一跳节点或上一跳节点。
本实施例中，所述封装单元1106可以配置为通过以下方式对数据包进行封装：在下一跳节点或上一跳节点为AP或宏站时，将数据包封装成AP MAC PDU帧结构，并在所述AP MAC PDU帧结构中携带所述UE对应的UE ID。
本实施例中，所述UE对应的UE ID可以承载在AP MAC PDU的MAC CE里，通过预留的LCID进行指示。
本实施例中，所述AP MAC PDU帧可以包括AP MAC PDU头和AP  MAC payload；其中，AP MAC PDU头可以包括AP MAC PDU子头和UE MAC header部分；AP MAC payload可以包括承载所述UE ID的MAC CE和UE MAC payload部分；其中，UE MAC payload部分可以包括MAC CE、MAC SDU和Padding部分；其中，所述UE对应的UE ID可以设置为承载在AP MAC payload部分的第一个MAC CE字段中；
或者，AP MAC PDU帧结构可以由AP路由信息和普通的UE MAC PDU级联而成；AP MAC PDU帧可以包括AP路由信息和UE MAC PDU帧部分，AP路由信息包括AP头信息和承载所述UE ID的MAC CE；其中，通过AP头信息中预留的LCID可以指示承载在AP路由信息中MAC CE中的内容为所述UE对应的UE ID。
本实施例中，确认单元1105可以包括：
路由信息确认模块，配置为根据针对UE的数据包获取UE对应的UE ID，查找所述UE ID对应的路由信息表；
第一确认模块，配置为当UE对应的路由信息表指示下一跳节点或上一跳节点包括多个时，根据预定的选择策略选择其中一个节点作为下一跳节点或上一跳节点；
第二确认模块，配置为当UE对应的路由信息表指示下一跳节点或上一跳节点包括一个时，将这个节点作为下一跳节点或上一跳节点。
本实施例中，第一确认模块可以配置为通过以下方式根据预定的选择策略选择其中一个节点作为下一跳节点或上一跳节点：根据业务QoS、时延、信道质量、信道容量中的一个或多个，选取下一跳节点或上一跳节点。
关于本实施例提供的装置的其他说明可以参照上述的方法实施例的描述，故于此不再赘述。
此外，本申请实施例还提供一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令被处理器执行时实现上述无线通信方法。
本领域普通技术人员可以理解，上文中所公开方法中的全部或某些步骤、系统、装置中的功能模块/单元可以被实施为软件、固件、硬件及其适当的组合。在硬件实施方式中，在以上描述中提及的功能模块/单元之间的划分不一 定对应于物理单元的划分；例如，一个物理组件可以具有多个功能，或者一个功能或步骤可以由若干物理组件合作执行。某些组件或所有组件可以被实施为由处理器，如数字信号处理器或微处理器执行的软件，或者被实施为硬件，或者被实施为集成电路，如专用集成电路。这样的软件可以分布在计算机可读介质上，计算机可读介质可以包括计算机存储介质(或非暂时性介质)和通信介质(或暂时性介质)。如本领域普通技术人员公知的，术语计算机存储介质包括在用于存储信息(诸如计算机可读指令、数据结构、程序模块或其他数据)的任何方法或技术中实施的易失性和非易失性、可移除和不可移除介质。计算机存储介质包括但不限于RAM、ROM、EEPROM、闪存或其他存储器技术、CD-ROM、数字多功能盘(DVD)或其他光盘存储、磁盒、磁带、磁盘存储或其他磁存储装置、或者可以用于存储期望的信息并且可以被计算机访问的任何其他的介质。此外，本领域普通技术人员公知的是，通信介质通常包含计算机可读指令、数据结构、程序模块或者诸如载波或其他传输机制之类的调制数据信号中的其他数据，并且可包括任何信息递送介质。
需要说明的是，以上所述的实施例仅是为了便于本领域的技术人员理解而已，并不用于限制本申请的保护范围，在不脱离本申请的发明构思的前提下，本领域技术人员对本申请所做出的任何显而易见的替换和改进等均在本申请的保护范围之内。
工业实用性
本申请实施例提供一种无线通信方法及装置，无需通过IP进行路由，减小了数据包的包头开销，通过底层的解析就能进行路由选择，不需要通过高层解析来获取IP地址，从而有效提高了数据传输的效率。

Claims (25)

  1. 一种无线通信方法，包括：
    节点在用户设备UE接入后或者收到其他节点上报的UE对应的路由信息时，生成所述UE对应的路由信息表。
  2. 根据权利要求1所述的无线通信方法，所述节点在UE接入后或者收到其他节点上报的UE对应的路由信息时，所述无线通信方法还包括：
    所述节点生成本节点待上报的所述UE对应的路由信息，并将生成的所述UE对应的路由信息上报给本节点的上一跳节点，以便所述上一跳节点生成所述UE对应的路由信息表。
  3. 根据权利要求1所述的无线通信方法，其中，所述路由信息表包括以下一项或多项：路由标识ID、上一跳节点的节点信息、下一跳节点的节点信息、UE信息。
  4. 根据权利要求3所述的无线通信方法，其中，所述节点信息包括：节点ID和节点层级。
  5. 根据权利要求2所述的无线通信方法，其中，所述节点上报的UE对应的路由信息包括：所述节点的标识ID、层级以及所述UE的ID。
  6. 根据权利要求1所述的无线通信方法，所述节点生成所述UE对应的路由信息表之后，所述无线通信方法还包括：
    根据如下方式中的一种对所述路由信息表进行维护：
    方式一：所述节点在UE断开连接后或者收到其他节点上报的针对UE的路由信息删除通知时，删除所述UE对应的路由信息表，并将针对所述UE的路由信息删除通知上报给所述节点的上一跳节点；
    方式二：所述节点在收到其他节点上报的针对UE的路由信息删除通知时，启动定时器；若定时器超时，且所述UE没有连接至所述节点，则所述节点删除所述UE对应的路由信息表，并将针对所述UE的路由信息删除通知上报给所述节点的上一跳节点；若在所述定时器超时之前，所述节点检测到所述UE连接到本节点，则更新所述UE对应的路由信息表。
  7. 根据权利要求1所述的无线通信方法，其中，所述节点为无线接入点AP或宏站。
  8. 根据权利要求1至7任一项所述的无线通信方法，所述节点生成所述UE对应的路由信息表之后，所述无线通信方法还包括：
    所述节点在接收到针对所述UE的数据包时，根据所述UE对应的路由信息表选择下一跳节点或上一跳节点；
    所述节点对所述数据包进行封装，并将封装好的数据包发送到所述节点的下一跳节点或上一跳节点。
  9. 根据权利要求8所述的无线通信方法，其中，所述节点对所述数据包进行封装包括：
    在所述下一跳节点或上一跳节点为无线接入点AP或宏站时，将所述数据包封装成AP介质访问控制MAC协议数据单元PDU帧结构，并在所述AP MAC PDU帧结构中携带所述UE对应的UE标识ID。
  10. 根据权利要求9所述的无线通信方法，其中，所述UE对应的UE ID承载在AP MAC PDU的MAC控制单元CE里，通过预留的逻辑信道标识LCID进行指示。
  11. 根据权利要求10所述的无线通信方法，其中，所述AP MAC PDU帧结构包括AP MAC PDU头和AP MAC有效载荷payload；所述AP MAC PDU头包括AP MAC PDU子头和UE MAC头；所述AP MAC payload包括承载所述UE ID的MAC CE和UE MAC payload；所述UE MAC payload至少包括MAC CE以及MAC服务数据单元SDU；所述UE对应的UE ID设置为承载在AP MAC payload的第一个MAC CE字段中；
    或者，所述AP MAC PDU帧结构包括AP路由信息和UE MAC PDU，所述AP路由信息包括AP头信息和承载所述UE ID的MAC CE；其中，通过AP头信息中预留的LCID，指示承载在AP路由信息的MAC CE中的内容为所述UE对应的UE ID。
  12. 根据权利要求8所述的无线通信方法，其中，所述节点根据所述UE对应的路由信息表选择下一跳节点或上一跳节点，包括：
    根据针对所述UE的数据包获取所述UE对应的UE标识ID，查找所述UE ID对应的路由信息表；
    当所述UE对应的路由信息表指示所述节点的下一跳节点或上一跳节点为多个时，根据预定的选择策略选择其中一个节点作为下一跳节点或上一跳节点；
    当所述UE对应的路由信息表指示所述节点的下一跳节点或上一跳节点为一个时，将这个节点作为下一跳节点或上一跳节点。
  13. 根据权利要求12所述的无线通信方法，其中，所述根据预定的选择策略选择其中一个节点作为下一跳节点或上一跳节点，包括：
    根据业务服务质量QoS、时延、信道质量、信道容量中的一个或多个，选取下一跳节点或上一跳节点。
  14. 一种无线通信装置，设置在节点上，包括：
    接入单元或者接收单元，所述接入单元配置为实现用户设备UE接入，所述接收单元配置为接收其他节点上报的UE对应的路由信息；
    建立单元，配置为在UE接入后或者所述接收单元收到其他节点上报的UE对应的路由信息时，生成所述UE对应的路由信息表。
  15. 根据权利要求14所述的无线通信装置，所述无线通信装置还包括：
    上报单元，配置为在UE接入后或者所述接收单元收到其他节点上报的UE对应的路由信息时，生成本节点待上报的所述UE对应的路由信息，并将生成的所述UE对应的路由信息上报给所述节点的上一跳节点。
  16. 根据权利要求14所述的无线通信装置，其中，所述路由信息表包括以下一项或多项：路由标识ID、上一跳节点的节点信息、下一跳节点的节点信息、UE信息。
  17. 根据权利要求16所述的无线通信装置，其中，所述节点信息包括：节点ID和节点层级。
  18. 根据权利要求15所述的无线通信装置，其中，所述上报单元上报的UE对应的路由信息包括：所述节点的标识ID、层级以及所述UE的ID。
  19. 根据权利要求14所述的无线通信装置，所述无线通信装置还包括维护单元，其中，所述维护单元包括如下模块中的任一个：
    第一维护模块，配置为在UE断开与本节点的连接后、或所述接收单元收到其他节点上报的针对UE的路由信息删除通知时，删除所述UE对应的路由信息表，并将针对所述UE的路由信息删除通知上报给本节点的上一跳节点；
    第二维护模块，配置为在所述接收单元收到其他节点上报的针对UE的路由信息删除通知时，启动定时器；如果所述定时器超时，且所述UE没有连接至本节点，则删除所述UE对应的路由信息表，并将针对所述UE的路由信息删除通知上报给本节点的上一跳节点；如果在所述定时器超时之前，检测到所述UE连接至本节点，则更新所述UE对应的路由信息表。
  20. 根据权利要求14所述的无线通信装置，其中，所述节点为无线接入点AP或宏站。
  21. 根据权利要求14至20任一项所述的无线通信装置，所述无线通信装置还包括：
    确认单元，配置为在所述节点接收到针对所述UE的数据包时，根据所述UE对应的路由信息表选择下一跳节点或上一跳节点；
    封装单元，配置为对所述数据包进行封装；
    转发单元，配置为将封装好的数据包发送到所述节点的下一跳节点或上一跳节点。
  22. 根据权利要求21所述的无线通信装置，其中，所述封装单元配置为通过以下方式对所述数据包进行封装：
    在所述下一跳节点或上一跳节点为无线接入点AP或宏站时，将所述数据包封装成AP介质访问控制MAC协议数据单元PDU帧结构，并在所述AP MAC PDU帧结构中携带所述UE对应的UE标识ID。
  23. 根据权利要求21所述的无线通信装置，其中，所述确认单元包括：
    路由信息确认模块，配置为根据针对所述UE的数据包获取所述UE对应的UE标识ID，查找所述UE ID对应的路由信息表；
    第一确认模块，配置为当所述UE对应的路由信息表指示所述节点的下一跳节点或上一跳节点为多个时，根据预定的选择策略选择其中一个节点作为下一跳节点或上一跳节点；
    第二确认模块，配置为当所述UE对应的路由信息表指示所述节点的下一跳节点或上一跳节点为一个时，将这个节点作为下一跳节点或上一跳节点。
  24. 根据权利要求23所述的无线通信装置，其中，所述第一确认模块配置为通过以下方式根据预定的选择策略选择其中一个节点作为下一跳节点或上一跳节点：
    根据业务服务质量QoS、时延、信道质量、信道容量中的一个或多个，选取下一跳节点或上一跳节点。
  25. 一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令被处理器执行时实现权利要求1至13任一项所述的无线通信方法。
PCT/CN2017/077852 2016-03-23 2017-03-23 一种无线通信方法及装置 WO2017162191A1 (zh)

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CN101754410A (zh) * 2008-12-19 2010-06-23 华为技术有限公司 网络的接入方法及装置
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