WO2017214983A1 - 标识管理方法、装置和系统 - Google Patents

标识管理方法、装置和系统 Download PDF

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Publication number
WO2017214983A1
WO2017214983A1 PCT/CN2016/086264 CN2016086264W WO2017214983A1 WO 2017214983 A1 WO2017214983 A1 WO 2017214983A1 CN 2016086264 W CN2016086264 W CN 2016086264W WO 2017214983 A1 WO2017214983 A1 WO 2017214983A1
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WIPO (PCT)
Prior art keywords
terminal
carrier
network device
rnti
communication
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PCT/CN2016/086264
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English (en)
French (fr)
Inventor
李冠臣
刘伟
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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 EP16905097.8A priority Critical patent/EP3451720A4/en
Priority to CN201680086120.5A priority patent/CN109196894A/zh
Priority to CA3025695A priority patent/CA3025695A1/en
Priority to KR1020187037111A priority patent/KR102137529B1/ko
Priority to PCT/CN2016/086264 priority patent/WO2017214983A1/zh
Priority to BR112018075971A priority patent/BR112018075971A2/pt
Priority to JP2018565733A priority patent/JP2019522417A/ja
Publication of WO2017214983A1 publication Critical patent/WO2017214983A1/zh
Priority to US16/220,660 priority patent/US20190124705A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/27—Control channels or signalling for resource management between access points
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/26—Network addressing or numbering for mobility support
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0078—Timing of allocation
    • H04L5/0087—Timing of allocation when data requirements change
    • H04L5/0089—Timing of allocation when data requirements change due to addition or removal of users or terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present invention relates to wireless communication technologies, and in particular, to a method, apparatus and system related to identification.
  • CA carrier aggregation
  • CA technology can increase the system data transmission rate and system throughput by aggregating multiple continuous or non-contiguous component carriers (CCs), and also solve the problem of carrier spectrum discontinuity.
  • CCs component carriers
  • a plurality of aggregated CCs include a primary component carrier (PCC), a primary cell (Pcell), and at least one secondary component carrier (SCC). ), corresponding to a secondary cell (Scell).
  • PCC primary component carrier
  • SCC secondary component carrier
  • Each CC of the aggregation is used for data transmission of the terminal. Therefore, the cell-radio network temporary identifier (C-RNTI) used by the terminal in the aggregated CC needs to be consistent.
  • C-RNTI cell-radio network temporary identifier
  • the PCC allocates a C-RNTI to the terminal; when configuring or activating the SCC, the PCC notifies the allocated C-RNTI to the SCC, so that the SCC allocates the C-RNTI.
  • the SCC may serve as the serving cell of other terminals, and allocate the C-RNTI to other terminals. That is, the C-RNTI allocated by the PCC for the terminal has been allocated to other terminals in the SCC, and a C needs to be reassigned to a terminal.
  • the RNTI causes the service of the terminal to be interrupted and the user experience is poor.
  • Embodiments of the present invention provide an identity management method to improve user experience.
  • the embodiment of the present application provides an identifier management method, which can be used in a multi-carrier communication system, where a multi-carrier communication system includes a first carrier and a second carrier, and the first terminal is in a first network where the first carrier is located.
  • the device accesses the wireless network, and is assigned a wireless network temporary identifier to identify the C-RNTI.
  • the method includes: the second network device where the second carrier is located receives the request message sent by the first network device, and the request message is used to request the second network device.
  • the second network device Allocating the C-RNTI to the first terminal; when the C-RNTI is allocated to the second terminal by the second network device, the second network device allocates the same C-RNTI as the second terminal to the first terminal, and
  • the communication resources used by the first terminal on the second carrier and the communication resources used by the second terminal on the second carrier are staggered.
  • the second network device sends a first notification message to the first network device, where the first notification message is used to notify the first network device to initiate cross-carrier scheduling for the first terminal, where the cross-carrier scheduling includes
  • the first network device sends control information of the first terminal on the second carrier to the first terminal on the control channel of the first carrier.
  • the control information of the first terminal in the second carrier mentioned in the above design may include information indicating a location of the data channel of the first terminal on the second carrier.
  • the second network device staggering the communication resource used by the first terminal in the second carrier and the communication resource used by the second terminal in the second carrier may include: The second network device schedules the first terminal in the first scheduling period, and schedules the second terminal in the second scheduling period; wherein the first scheduling period is different from the second scheduling period.
  • the first network device sends a first indication message to the first network device, where the first indication message is used to indicate that the first network device sends the first terminal to the first terminal on the control channel of the first carrier.
  • Two carrier control information The sending of the first indication message may be based on the second network device configuring the first scheduling period for the first terminal, for example, real-time, and sending after the first scheduling period is configured.
  • the second network device staggering the communication resource used by the first terminal on the second carrier and the communication resource used by the second terminal on the second carrier may include: using, by the second network device, the first resource region and The first terminal performs data transmission, and uses the second resource area to perform data transmission with the second terminal; wherein the first resource area is different from the second resource area.
  • the second network device may divide the first resource region and the second resource region based on the frequency domain, the time domain, or the time domain and the frequency domain, and allocate them to the first terminal and the second terminal respectively.
  • the resource region herein may include at least one physical resource block or a physical resource block pair.
  • the second network device sends a second indication message to the first network device, where the second indication message is used to indicate that the first network device sends the first terminal to the first terminal on the control channel of the first carrier.
  • Two carrier control information and includes information indicating the first resource region.
  • the information of the first resource area may specifically include the frequency band information, the time period information, or the frequency band information and the time period information according to the manner in which the second network divides the resource area.
  • the first notification message in the above design is further used to notify the first terminal and the same C-RNTI used by the second terminal.
  • the second network device sends a second notification message to the first network device, where the second notification message is used to notify the first terminal and the same C-RNTI used by the second terminal.
  • the second network device may include, in a first notification message or a second notification message, a specific manner of staggering communication resources used by the first terminal and the second terminal in the second carrier.
  • a network device the advantage of doing so is to inform the first network device of the solution as early as possible in time, which is advantageous for the first network device to coordinate the subsequent scheduling on the first carrier.
  • the embodiment of the present invention provides another identifier management method, which can be used in a multi-carrier communication system, where the multi-carrier communication system includes a first carrier and a second carrier, where the first terminal is located at the first carrier.
  • a network device accesses the wireless network, and is assigned a wireless network temporary identifier C-RNTI, the method includes: the first network device sends a request message to the second network device where the second carrier is located, and the request message is used to request the second network device Allocating the C-RNTI to the first terminal; when the first terminal uses the same C-RNTI as the second terminal in the second carrier, the first network device receives the indication message sent by the second network device, The indication message is used to indicate that the first network device sends the control information of the first terminal in the second carrier to the first terminal on the control channel of the first carrier, and the communication resource used by the first terminal in the second carrier is The communication resources used by the second terminal in the second carrier are staggered.
  • the first network device receives the notification message sent by the second network device, where the first notification message is used to notify the first network device to initiate cross-carrier scheduling for the first terminal, where the cross-carrier scheduling includes: The first network device sends, on the control channel of the first carrier, control information of the first terminal on the second carrier to the first terminal. So, the first terminal And the second terminal can distinguish the respective control information by different carriers, so as not to interfere with each other and avoid the occurrence of communication errors.
  • the control information of the first terminal in the second carrier mentioned in the above design may include information indicating a location of the data channel of the first terminal on the second carrier.
  • the communication resource used by the first terminal in the second carrier and the communication resource used by the second terminal in the second carrier are staggered, including: the scheduling period of the first terminal is different from the second terminal. Scheduling cycle.
  • the communication resource used by the first terminal in the second carrier and the communication resource used by the second terminal in the second carrier are staggered, including: the resource area used by the first terminal is different from the second The resource area used by the terminal.
  • the division of different resource regions may be based on frequency domain, time domain or time domain and frequency domain.
  • the notification message in the above design is also used to notify the first terminal and the same C-RNTI used by the second terminal.
  • the first network device receives the second notification message sent by the second network device, where the second notification message is used to notify the first terminal and the same C-RNTI used by the second terminal.
  • an embodiment of the present invention provides a network device, where the network device has a function of implementing behavior of a first network device or a second network device in the foregoing method design.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more units corresponding to the functions described above.
  • the structure of the network device includes a processor, a transmitter, and an interface unit configured to support the network device to perform corresponding functions in the above methods.
  • the transmitter is for supporting communication between a network device and a terminal, the interface unit being configured to instruct communication between the network device and other network devices, and transmitting messages or instructions involved in the above method to other network devices.
  • the network device may further include A memory for coupling to a processor that stores program instructions and data necessary for the base station.
  • an embodiment of the present invention provides a communication system, where the system includes the first network device and the second network device described in the foregoing aspects.
  • an embodiment of the present invention provides a computer storage medium for storing computer software instructions for use in the second network device, including a program designed to perform the above aspects.
  • an embodiment of the present invention provides a computer storage medium for storing computer software instructions for use in the first network device, including a program designed to perform the above aspects.
  • an embodiment of the present invention provides a chip system, including: at least one processor, a memory, an input/output portion, and a bus; and the at least one processor acquires an instruction in the memory through the bus to use The design function of the second network device involved in implementing the above method is implemented.
  • an embodiment of the present invention provides a chip system, including: at least one processor, a memory, an input/output portion, and a bus; and the at least one processor acquires an instruction in the memory through the bus to use The implementation function of the first network device involved in implementing the above method.
  • the C-RNTI corresponding to the terminal is in the network where the SCC is located when the second carrier is already occupied.
  • the device multiplexes the C-RNTI with the terminal and other terminals, and the communication resources of the terminal and other terminals in the second carrier are staggered.
  • the technical solution is different from the prior art, and the terminal does not need to replace the C-RNTI. Realize normal communication of the terminal to avoid poor user experience caused by service interruption.
  • FIG. 1 is a schematic structural diagram of a system according to an embodiment of the present disclosure
  • FIG. 2(a) is an example of carrier aggregation according to an embodiment of the present invention
  • FIG. 2(b) is another example of carrier aggregation according to an embodiment of the present invention.
  • FIG. 2(c) is another example of carrier aggregation according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a C-RNTI conflict according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart diagram of an identifier management method according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a basic principle of cross-carrier scheduling according to an embodiment of the present disclosure
  • FIG. 6 is a schematic structural diagram of a network device according to an embodiment of the present disclosure.
  • FIG. 7 is another schematic structural diagram of a network device according to an embodiment of the present invention.
  • FIG. 1 is a schematic structural diagram of a system according to an embodiment of the present invention.
  • the terminal accesses an external network through a radio access network (RAN) and a core network (CN).
  • RAN radio access network
  • CN core network
  • the techniques described in the present invention can be applied to other wireless communication systems employing various radio access technologies, such as code division multiple access, frequency division multiple access, time division multiple access, orthogonal frequency division multiple access, single carrier frequency division multiple access.
  • Systems such as access technologies, subsequent evolution systems, such as fifth-generation 5G systems.
  • LTE long term evolution
  • E-UTRA evolved universal terrestrial radio access
  • EPC evolved packet core
  • the network device may be a device deployed in the radio access network to provide a wireless communication function for the terminal.
  • the network device may include various forms of macro base stations, micro base stations, relay stations, access points, and the like.
  • the name of a device having a base station function may be different, for example, in an LTE system, an evolved Node B (eNodeB).
  • the terminal may include various handheld devices having wireless communication functions, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to the wireless modem, and various forms of mobile stations (MS), user devices (users) Equipment, UE) and so on.
  • control channel involved in the present application may be a physical downlink control channel (PDCCH) in the LTE system; the data channel involved in the present application may be a physical downlink sharing in the LTE system.
  • the physical downlink shared channel (PDSCH) may also be a physical uplink shared channel (PUSCH).
  • FIGS. 2(a), 2(b), and 2(c) show three examples of CA.
  • Band 1 and Band 2 are aggregated as CC1 and CC2, respectively, where Band 1 and Band 2 are continuous; in Figure 2(b), in Band A Above, Band 1 and Band 2 are aggregated as CC1 and CC2, respectively, where Band 1 and Band 2 are discontinuous; in Figure 2(c), Band 1 on Band A is used as CC1 and Band B. Band 2 is aggregated together as CC2.
  • the CA may also include aggregation of more than two CCs, and details are not described herein again.
  • CCs that are aggregated in the CA technology may be managed by the same network device or separately by different network devices. Specifically, it is assumed that there are two CCs being CC1 and CC2 respectively, and the interaction between the two CCs involved in the embodiment of the present invention and the interaction between the CC and the terminal may be performed by the following subjects:
  • the executor of the CC1 method action may be the first network device where the CC1 is located; the executor of the CC2 method action may be the second network device where the CC2 is located.
  • the executor of the CC1 method action may be the baseband board that manages the CC1 under the network device; the executor of the CC2 method action may be the baseband board that manages the CC2 under the network device.
  • the execution body of the CC1 method action may be a processor that controls CC1; the execution body of the CC2 method action may be a processor that controls CC2. It should be noted that, in the embodiment of the present invention, the execution entity of the CC1 method is the first network device where the CC1 is located, and the execution entity of the CC2 method is the second network device where the CC2 is located. When managed by the same network device, the first network device and the second network device are the same network device.
  • the C-RNTI is an identifier added at the head of a media access control (MAC) packet data unit (PDU) for identifying radio resource control (RRC) and scheduling.
  • MAC media access control
  • PDU packet data unit
  • RRC radio resource control
  • both the PCC and the SCC are used for data transmission of the same terminal, and the C-RNTI used by the terminal needs to be consistent.
  • the C-RNTI of the terminal is allocated to the terminal by the network device where the PCC is located when accessing the PCC.
  • CC1 acts as the PCC to aggregate CC2 into SCC for terminal 1.
  • CC2 needs to use C1-RNTI1 allocated by CC1 for this terminal 1, but CC2 may already have this.
  • the C-RNTI1 is allocated to the terminal 2, so that the C-RNTIs of the two terminals collide. In this case, the C-RNTI needs to be re-allocated for the terminal 1 or the terminal 2, which causes the service interruption of the terminal and the user experience is poor.
  • the new C-RNTI is replaced by the terminal 1 or 2 in the manner of the cell handover in the prior art.
  • the current service interruption of the terminal 1 or 2 may be caused, and the user experience is poor. .
  • the embodiment of the present application does not re-allocate a new C-RNTI for a certain terminal, but allows the two terminals to multiplex the C-RNTI and reuse the C-RNTI.
  • the RNTI's CC uses resource staggering to ensure data transmission to both terminals.
  • FIG. 4 is a schematic flowchart of an identity management method for a multi-carrier communication system, where the communication system includes CC1 and CC2, and the terminal 1 accesses the wireless network in the first network device where the CC1 is located, and is allocated a C-RNTI. .
  • the method can be applied to the system architecture shown in FIG. 1, the CA technology shown in FIG. 2(a), FIG. 2(b), FIG. 2(c), and the application scenario shown in FIG. 3.
  • the method includes:
  • the first network device sends a request message to the second network device where the CC2 is located, where the request message is used to request the second network device to allocate the C-RNTI to the terminal 1, that is, the first network device allocates the terminal on the CC1.
  • C-RNTI is used to request the second network device to allocate the C-RNTI to the terminal 1, that is, the first network device allocates the terminal on the CC1.
  • the second network device allocates the C-RNTI that is the same as the terminal 2 to the terminal 1, and uses the communication resource used by the terminal 1 in the CC2.
  • the communication resources used by the terminal 2 in CC2 are staggered.
  • the first network device allocates the C-RNTI to the terminal 1.
  • CC1 as the PCC of terminal 1 wants to be
  • the terminal 1 aggregates CC2 as the SCC of the terminal 1.
  • Step 401 is then triggered to execute.
  • the second network device may be requested to allocate the C-RNTI to the terminal 1 by carrying the C-RNTI in the request message.
  • the request message may be a message that is exchanged between the existing CC1 and the CC2, for example, a message that the PCC requests a resource from the SCC, for example, an SCC user equipment resource request message.
  • the request message may also be a new message, which may include only the C-RNTI, and may also include other cells.
  • the second network device receives the request message sent by the first network device.
  • the second network device may acquire the C-RNTI in the request message by parsing the request message, when the second network device finds that the C-RNTI has been allocated to the terminal 2 by itself.
  • the second network device may multiplex the C-RNTI with the terminal 1 and the terminal 2, that is, different from the prior art, the C-RNTI is replaced for the terminal 1 or 2, but the terminal 1 is still allocated for the terminal 1.
  • - RNTI such that Terminal 1 and Terminal 2 use the same C-RNTI on CC2.
  • the second network device staggers the communication resources used by the terminal 1 at the CC2 and the communication resources used by the terminal 2 at the CC2.
  • the communication resource herein may be a time resource, a frequency resource, a space resource, or the like. In addition, it may also be a combination of some of the resources, such as a time-frequency resource.
  • the staggering of resources here can be realized by staggering in the time domain, or by staggering in the frequency domain, and can also be realized by spatially staggering, which is not limited in this application.
  • the staggering of resources can be implemented in the time domain.
  • the second network device schedules terminal 1 and terminal 2 in different scheduling periods. Specifically, the second network device schedules the terminal 1 in the first scheduling period, and schedules the terminal 2 in the second scheduling period; wherein the first scheduling period is different from the second scheduling period. That is, the second network device uses the zone The scheduling period is divided, and the scheduling periods of the terminal 1 and the terminal 2 using the same C-RNTI are staggered, and the terminal 1 and the terminal 2 can use the resources in the CC2 in different time periods.
  • the implementation does not need to replace the C-RNTI of the terminal 1 or the terminal 2, thereby solving the problem of service interruption caused thereby, and further realizing the rational use of resources.
  • the second network device uses the first resource region to perform data transmission with the terminal 1, and uses the second resource region to perform data transmission with the terminal 2; wherein the first resource region is different from the second resource region. . That is to say, the second network device selects different resource regions in CC2, so that the terminal 1 and the terminal 2 use different resource regions, so that the terminal 1 and the terminal 2 do not generate resource conflicts during the communication process. Compared with the prior art, there is no need to replace the terminal 1 or 2, thereby solving the problem of service interruption caused thereby, and also enabling rational utilization of resources.
  • the resource region herein may include at least one physical resource block or a physical resource block pair, and the first resource region and the second resource region include different physical resource blocks or physical resource block pairs.
  • the second network device may divide the resources corresponding to the CC2 into multiple resource regions based on the frequency domain, the time domain, or the frequency domain and the time domain, as an implementation manner, when the second device When the resource corresponding to the CC2 is divided into multiple resource regions based on the frequency domain, the multiple resource regions include a first resource region corresponding to the first frequency band, and the first resource region is allocated to the terminal 1.
  • the number of resource regions into which the resources are divided in the frequency domain may be determined according to the number of terminals, that is, if there are N terminals.
  • the resource is divided into N resource areas.
  • the C-RNTI is used to scramble the control channel, for example, the PDCCH, and the terminal determines, according to the C-RNTI, that the control information on the PDCCH is transmitted to itself.
  • the second network device notifies the first network device to initiate cross-carrier scheduling of the terminal 1, that is, the control channel on CC1 transmits control information of the terminal 1 on CC2.
  • the control information carried in the PDCCH is used to indicate the resource location of the PDSCH.
  • the control information carried in the PDCCH on the CC1 indicates the resource location of the PDSCH or the PUSCH on the CC2, and the control information carried in the PDCCH on the CC2 indicates the resource location of the PDSCH or the PUSCH on the CC2. In this way, the terminal 1 and the terminal 2 can distinguish the respective control information by the carrier.
  • FIG. 5 shows the basic principle of cross-carrier scheduling in an LTE system.
  • the PCC can indicate the resource location of the PDSCH of the PCC, the resource location of the PUSCH of the PCC, the resource location of the PDSCH of the SCC, and the SCC through its own PDCCH.
  • the location of the PUSCH resource is not limited to the PCC.
  • the method of the embodiment of the present invention may further include:
  • the second network device sends a first notification message to the first network device, where the first notification message is used to notify the first network device to initiate cross-carrier scheduling of the terminal 1.
  • the cross-carrier scheduling includes: the first network device sends control information of the terminal 1 at CC2 to the terminal 1 on the control channel of CC1.
  • the cross-carrier scheduling of the initiating terminal 1 herein means that the first network device can implement cross-carrier scheduling for the terminal 1, which is an enabling meaning.
  • the control information of the terminal 1 at CC2 includes information indicating the location of the data channel of the terminal 1 on CC2, for example, information of the location of the PDSCH resource of the terminal 1 in CC2.
  • the method in the embodiment of the present invention may further include: if, in step 402, the second network device is configured to distinguish the communication resources of the terminal 1 and the terminal 2 in the CC2 by using a different scheduling period, the method of the embodiment of the present invention may further include:
  • the second network device sends a first indication message to the first network device, where the first indication message is used to indicate that the first network device sends the control information of the terminal 1 at the CC2 to the terminal 1 on the control channel of the CC1. That is, the second network device instructs the first network device to schedule the transmission of the terminal 1 at CC2 in the first cycle through the control channel of CC1.
  • the sending of the first indication message may be real-time: when the second network device allocates the first scheduling period to the terminal 1, the sending of the first indication message is triggered.
  • the transmission includes downlink data reception and uplink data transmission of the terminal 1.
  • the specific data transmission process can be as follows:
  • the second device transmits the data received from the first device to the terminal 1 through the data channel of the CC2; or the second device receives the data transmitted by the terminal 1 through the data channel of the CC2.
  • the above data transmissions of CC2 and terminal 1 occur in the first scheduling period.
  • the method in the embodiment of the present invention may further include:
  • the second network device sends a second indication message to the first network device, where the second indication message is used to indicate that the first network device sends the control information of the terminal 1 at the CC2 to the terminal 1 on the control channel of the CC1, and includes the indication Information about a resource area.
  • the second device divides the resource corresponding to the CC2 into multiple resource regions based on the frequency domain, and when the multiple resource regions include the first resource region corresponding to the first frequency band, indicating the first resource region
  • the information may be information indicating the first frequency band.
  • the second network device requests the first network device to schedule through the control channel of CC1.
  • Terminal 1 transmits on the first resource area of CC2.
  • the transmission includes downlink data reception and uplink data transmission by the terminal 1.
  • the specific data transmission process can be as follows:
  • the second device transmits the data received from the first device to the terminal 1 through the data channel of the CC2; or the second device receives the data transmitted by the terminal 1 through the data channel of the CC2.
  • the data channel of the CC2 is located on the first resource area.
  • the first network device receives the first indication message or the second indication message.
  • the first network device can learn the periodic segment that the terminal 1 can be scheduled in the CC2 or the resource region that is actually used, and then send the control information to the terminal 1 to implement the corresponding scheduling period or corresponding resource region of the terminal 1 in the CC2. Data transfer.
  • the first notification message may be further used to notify the first network device that the terminal 1 and the terminal 2 use the same C-RNTI in the CC2, or the C-RNTI of the terminal 1 and the terminal 2 in the CC2. conflict.
  • the second network device may also send a second notification message to the first network device to implement the foregoing function.
  • the second network device may further provide, in the first notification message or the second notification message, a specific manner of staggering the communication resources used by the terminal 1 and the terminal 2 in the CC2 to the first network device, and the benefit is that It is possible to inform the first network device of the conflict resolution in advance, which is advantageous for the first network device to coordinate the subsequent scheduling of the CC1.
  • the C-RNTI corresponding to the terminal is in the case that the CC2 is already occupied, and the SCC is restored to the terminal and other terminals.
  • the communication resources of the terminal and other terminals in the CC2 are staggered.
  • the technical solution is different from the prior art, and the terminal does not need to replace the C-RNTI, thereby avoiding a poor user experience due to service interruption.
  • the solution provided by the embodiment of the present invention is mainly introduced from the perspective of the interaction between the network devices and the interaction between the network devices and the terminals.
  • network devices, terminals, etc. in order to implement the above functions, include hardware structures and/or software modules corresponding to each function.
  • the present invention can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.
  • FIG. 6 shows a possible structural diagram of a network device involved in the above embodiment.
  • the network device includes a transmitter/receiver 601, a controller/processor 602, a memory 603, and a communication unit 604.
  • the transmitter/receiver 601 is configured to support transmission and reception of information between the network device and the terminal, and to support radio communication between the terminal and other terminals.
  • the controller/processor 602 performs various functions for communicating with other network devices or terminals.
  • On the uplink the uplink signal from the terminal is received via the antenna, coordinated by the receiver 601, and further processed by the controller/processor 602 to recover the service data and signaling information transmitted by the terminal.
  • traffic data and signaling messages are processed by controller/processor 602 and mediated by transmitter 601 to generate downlink signals for transmission to the terminal via the antenna.
  • the controller/processor 602 also performs the first network device or the second network in the method embodiment corresponding to FIG. Processing of the network device and/or other processes for the techniques described herein.
  • the memory 603 is used to store program codes and data of the network device.
  • the interface unit 604 is configured to support the network device to communicate with other network devices, for example, it can implement communication of the X2 port or the S1 port.
  • Figure 6 only shows a simplified design of the network device.
  • the network device may include any number of transmitters, receivers, processors, controllers, memories, interface units, etc., and all network devices that can implement the present invention are within the scope of the present invention.
  • FIG. 7 is a network device 700 according to an embodiment of the present invention.
  • the network device 700 may include a processing unit 710 and an interface unit 720.
  • the processing unit 710 can implement the functions of the first network device in FIG. 6 or the controller/processor 602 of the second network device; the interface unit 720 can implement the function of the interface unit 604 of the network device in FIG. 6.
  • the various illustrative logic blocks, modules and circuits described in the embodiments of the invention may be implemented by a general purpose processing unit, a digital signal processing unit, an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic.
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • Device discrete gate or transistor logic, discrete hardware components, or any combination of the above designed to implement or operate as described Features.
  • the general purpose processing unit may be a micro processing unit.
  • the general purpose processing unit may be any conventional processing unit, controller, microcontroller or state machine.
  • the processing unit may also be implemented by a combination of computing devices, such as a digital signal processing unit and a microprocessing unit, a plurality of microprocessing units, one or more microprocessing units in conjunction with a digital signal processing unit core, or any other similar configuration. achieve.
  • the steps of the method or algorithm described in the embodiments of the present invention may be directly embedded in hardware, a software module executed by a processing unit, or a combination of the two.
  • the software modules can be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium in the art.
  • the storage medium can be coupled to the processing unit such that the processing unit can read information from the storage medium and can write information to the storage medium.
  • the storage medium can also be integrated into the processing unit.
  • the processing unit and the storage medium may be configured in an ASIC, and the ASIC may be configured in the user terminal. Alternatively, the processing unit and the storage medium may also be configured in different components in the user terminal.
  • the above-described functions described in the embodiments of the present invention may be implemented in hardware, software, firmware, or any combination of the three. If implemented in software, these functions may be stored on a computer readable medium or transmitted as one or more instructions or code to a computer readable medium.
  • Computer readable media includes computer storage media and communication media that facilitates the transfer of computer programs from one place to another.
  • the storage medium can be any available media that any general purpose or special computer can access.
  • Such computer-readable media can include, but is not limited to, RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage or other magnetic storage device, or any other device or data structure that can be used for carrying or storing Other media that can be read by a general purpose or special computer, or a general or special processing unit.
  • any connection can be appropriately defined as a computer readable medium, for example, if the software is from a Site sites, servers or other remote resources are also included in the defined computer via a coaxial cable, fiber optic computer, twisted pair, digital subscriber line (DSL) or wirelessly transmitted in, for example, infrared, wireless and microwave. Read in the medium.
  • DSL digital subscriber line
  • the disks and discs include compact disks, laser disks, optical disks, DVDs, floppy disks, and Blu-ray disks. Disks typically replicate data magnetically, while disks typically optically replicate data with a laser. Combinations of the above may also be included in a computer readable medium.

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Abstract

本发明实施例提供了一种标识管理方法，用于多载波通信系统，所述多载波通信系统包括第一载波和第二载波，第一终端在所述第一载波所在的第一网络设备接入无线网络，且被分配无线网络临时标识C-RNTI，包括：所述第二载波所在的第二网络设备接收所述第一网络设备发送的请求消息，所述请求消息用于请求所述第二网络设备为所述第一终端分配所述C-RNTI；当所述C-RNTI被所述第二网络设备分配给第二终端时，所述第二网络设备为所述第一终端分配与所述第二终端相同的所述C-RNTI，并将所述第一终端在所述第二载波使用的通信资源和所述第二终端在所述第二载波使用的通信资源错开。通过上述方法，终端无需更换C-RNTI就能实现终端的正常通信，避免因业务中断而导致的用户体验不佳。

Description

标识管理方法、装置和系统 技术领域
本发明涉及无线通信技术，尤其涉及一种与标识相关的方法、装置和系统。
背景技术
随着移动通信与宽带无线接入技术的发展，移动通信业务和宽带无线接入业务互相渗透。为了满足移动通信带宽化的需求并应对宽带通信移动化的挑战，移动通信系统引入载波聚合(carrier aggregation，CA)技术。
CA技术通过对多个连续或者非连续的分量载波(component carrier，CC)的聚合获得更大的带宽，从而提高系统数据传输速率和系统吞吐量，同时也解决了运营商频谱不连续的问题。
对于具有CA能力的终端，在聚合的多个CC中，包含一个主分量载波(primary component carrier，PCC)，对应主小区(primary cell,Pcell)，和至少一个辅分量载波(secondary component carrier,SCC)，对应辅小区(secondary cell,Scell)。聚合的每一个CC都用于该终端的数据传输。因此，终端在聚合的CC中使用的小区无线网络临时标识(cell-radio network temporary identifier，C-RNTI)需要保持一致。
在载波聚合的过程中，终端在接入PCC时，PCC会为该终端分配C-RNTI；当配置或激活SCC时，PCC将分配的C-RNTI通知给SCC，以便SCC将该C-RNTI分配给该终端。然而SCC可能作为其它终端的服务小区，并为其它终端分配了该C-RNTI，即PCC为该终端分配的C-RNTI在SCC已经分配给了其它终端，此时需要为某个终端重新分配C-RNTI，导致该终端的业务中断，用户体验不佳。
发明内容
本发明实施例提供一种标识管理方法，以期提高用户体验。
一方面，本申请实施例提供了一种标识管理方法，可以用于多载波通信系统，其中，多载波通信系统包括第一载波和第二载波，第一终端在第一载波所在的第一网络设备接入无线网络，且被分配无线网络临时标标识C-RNTI，该方法包括：第二载波所在的第二网络设备接收第一网络设备发送的请求消息，请求消息用于请求第二网络设备为所述第一终端分配该C-RNTI；当该C-RNTI被第二网络设备分配给第二终端时，第二网络设备为第一终端分配与第二终端相同的该C-RNTI，并将第一终端在所述第二载波使用的通信资源和所述第二终端在所述第二载波使用的通信资源错开。
基于上述方面，本申请还提供了以下可能的设计：
在一种可能的设计中，第二网络设备向所述第一网络设备发送第一通知消息，第一通知消息用于通知第一网络设备对第一终端启动跨载波调度，该跨载波调度包括：第一网络设备在第一载波的控制信道上向第一终端发送第一终端在第二载波的控制信息。如此，第一终端和第二终端可以通过不同的载波区分各自的控制信息，做到互不干扰，避免了通信错误的产生。
上述设计中提及的第一终端在第二载波的控制信息可以包括指示所述第一终端在所述第二载波上的数据信道位置的信息。
在一种可能的设计中，第二网络设备将第一终端在第二载波使用的通信资源和第二终端在第二载波使用的通信资源错开可以包括：第 二网络设备在第一调度周期调度第一终端，在第二调度周期调度第二终端；其中，第一调度周期不同于第二调度周期。
基于上述设计，还包括第二网络设备向第一网络设备发送第一指示消息，第一指示消息用于指示第一网络设备在第一载波的控制信道上向第一终端发送第一终端在第二载波的控制信息。该第一指示消息的发送可以是基于第二网络设备为第一终端配置好第一调度周期，比如是实时的，配置好第一调度周期后即发送。
在一种可能的设计中，第二网络设备将第一终端在第二载波使用的通信资源和第二终端在第二载波使用的通信资源错开可以包括：第二网络设备使用第一资源区域与第一终端进行数据传输，使用第二资源区域与第二终端进行数据传输；其中第一资源区域不同于第二资源区域。其中，第二网络设备可以基于频域、时域或者时域和频域划分第一资源区域和第二资源区域，并将它们分别分配给第一终端和第二终端。这里的资源区域可以包括至少一个物理资源块或物理资源块对。
基于上述设计，还包括第二网络设备向第一网络设备发送第二指示消息，第二指示消息用于指示第一网络设备在第一载波的控制信道上向第一终端发送第一终端在第二载波的控制信息，且包括指示第一资源区域的信息。该第一资源区域的信息具体可以根据第二网络对资源区域的划分方式包括频段信息、时间段信息、或者频段信息和时间段信息。
在一种可能的设计中，上述设计中的第一通知消息还用于通知第一终端与第二终端使用的相同的C-RNTI。
在一种可能的设计中，第二网络设备向第一网络设备发送第二通知消息，述第二通知消息用于通知第一终端与第二终端使用的相同的C-RNTI。
在一种可能的设计中，第二网络设备可以在将错开第一终端和第二终端在第二载波中使用的通信资源的具体方式包括在第一通知消息或者第二通知消息中发送给第一网络设备，这样做的好处是尽可能在时间上提早告知第一网络设备该解决方式，有利于第一网络设备协调好在第一载波上的后续调度安排。
另一方面，本发明实施例提供了另一种标识管理方法，可以用于多载波通信系统，其中，多载波通信系统包括第一载波和第二载波，第一终端在第一载波所在的第一网络设备接入无线网络，且被分配无线网络临时标识C-RNTI，该方法包括：第一网络设备向第二载波所在的第二网络设备发送请求消息，请求消息用于请求第二网络设备为第一终端分配该C-RNTI；当所述第一终端在所述第二载波中与第二终端使用相同的该C-RNTI时，第一网络设备接收第二网络设备发送的指示消息，指示消息用于指示第一网络设备在第一载波的控制信道上向第一终端发送第一终端在第二载波的控制信息，且第一终端在第二载波中使用的通信资源与所述第二终端在第二载波中使用的通信资源是错开的。
基于上述方面，本申请还提供了以下可能的设计：
在一种可能的设计中，第一网络设备接收所述第二网络设备发送的通知消息，第一通知消息用于通知第一网络设备对第一终端启动跨载波调度，该跨载波调度包括：第一网络设备在第一载波的控制信道上向第一终端发送第一终端在第二载波的控制信息。如此，第一终端 和第二终端可以通过不同的载波区分各自的控制信息，做到互不干扰，避免了通信错误的产生。
上述设计中提及的第一终端在第二载波的控制信息可以包括指示所述第一终端在所述第二载波上的数据信道位置的信息。
在一种可能的设计中，第一终端在第二载波中使用的通信资源与第二终端在第二载波中使用的通信资源是错开的，包括：第一终端的调度周期不同于第二终端的调度周期。
在一种可能的设计中，第一终端在第二载波中使用的通信资源与第二终端在第二载波中使用的通信资源是错开的，包括：第一终端使用的资源区域不同于第二终端使用的资源区域。不同的资源区域的划分可以是基于频域、时域或者时域和频域。
在一种可能的设计中，上述设计中的通知消息还用于通知第一终端与第二终端使用的相同的C-RNTI。
在一种可能的设计中，第一网络设备接收第二网络设备发送的第二通知消息，述第二通知消息用于通知第一终端与第二终端使用的相同的C-RNTI。
另一方面，本发明实施例提供了一种网络设备，该网络设备具有实现上述方法设计中第一网络设备或者第二网络设备行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的单元。
在一个可能的设计中，网络设备的结构中包括处理器、发射器和接口单元，所述处理器被配置为支持网络设备执行上述方法中相应的功能。所述发射器用于支持网络设备与终端之间的通信，所述接口单元被配置为指示网络设备和其它网络设备之间的通信，向其它网络设备发送上述方法中所涉及的消息或者指令。所述网络设备还可以包括 存储器，所述存储器用于与处理器耦合，其保存基站必要的程序指令和数据。
又一方面，本发明实施例提供了一种通信系统，该系统包括上述方面所述的第一网络设备和第二网络设备。
再一方面，本发明实施例提供了一种计算机存储介质，用于储存为上述第二网络设备所用的计算机软件指令，其包含用于执行上述方面所设计的程序。
再一方面，本发明实施例提供了一种计算机存储介质，用于储存为上述第一网络设备所用的计算机软件指令，其包含用于执行上述方面所设计的程序。
再一方面，本发明实施例提供了一种芯片系统，包括：至少一个处理器，存储器，输入输出部分和总线；所述至少一个处理器通过所述总线获取所述存储器中的指令，以用于实现上述方法涉及中第二网络设备的设计功能。
再一方面，本发明实施例提供了一种芯片系统，包括：至少一个处理器，存储器，输入输出部分和总线；所述至少一个处理器通过所述总线获取所述存储器中的指令，以用于实现上述方法涉及中第一网络设备的设计功能。
本发明实施例提供的技术方案，在第一载波作为PCC为终端聚合第二载波为SCC时，所述终端对应的C-RNTI在所述第二载波已被占用的情况下，SCC所在的网络设备通过对所述终端和其它终端复用该C-RNTI、将所述终端与其它终端在第二载波中的通信资源错开，该技术方案不同于现有技术，终端无需更换C-RNTI就能实现终端的正常通信，避免因业务中断而导致的用户体验不佳。
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，下面将对实施例或现有技术描述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性的前提下，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系统架构图；
图2(a)为本发明实施例提供的一种载波聚合示例；
图2(b)为本发明实施例提供的另一种载波聚合示例；
图2(c)为本发明实施例提供的另一种载波聚合示例；
图3为本发明实施例提供的一种C-RNTI冲突示意图；
图4为本发明实施例提供的一种标识管理方法的流程示意图；
图5为本发明实施例提供的一种跨载波调度基本原理的示意图；
图6为本发明实施例提供的网络设备的一种结构示意图；
图7为本发明实施例提供的网络设备的另一种结构示意图。
具体实施方式
图1为本发明实施例提供的一种系统架构图。如图1所示，终端通过无线接入网(radio access network,RAN)以及核心网(core network,CN)接入外部网络(external network)。本发明描述的技术可以适用于其他采用各种无线接入技术的无线通信系统，例如采用码分多址，频分多址，时分多址，正交频分多址，单载波频分多址等接入技术的系统，后续的演进系统，如第五代5G系统等。
本申请中，名词“网络”和“系统”经常交替使用，但本领域的技术人员可以理解其含义。为清楚起见，这里以长期演进(long term  evolution，LTE)系统为例进行说明。在LTE系统中，演进的UMTS陆面无线接入(evolved universal terrestrial radio access,E-UTRA)网作为无线接入网，演进分组核心网(evolved packet core,EPC)作为核心网。
本发明实施例中，网络设备可以是一种部署在无线接入网中用以为终端提供无线通信功能的装置。所述网络设备可以包括各种形式的宏基站，微基站，中继站，接入点等等。在采用不同的无线接入技术的系统中，具备基站功能的设备的名称可能会有所不同，例如在LTE系统中，称为演进的节点B(evolved NodeB，eNodeB)。终端可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其它处理设备,以及各种形式的移动台(mobile station,MS)，用户设备(user equipment,UE)等等。
另外，在本申请中所涉及的控制信道，在LTE系统中可以为物理下行控制信道(physical downlink control channel,PDCCH)；在本申请中所涉及的数据信道，在LTE系统中可以为物理下行共享信道(physical downlink shared channel,PDSCH)，也可以为物理上行共享信道(physical uplink shared channel,PUSCH)。
本发明实施例适用于CA技术中，图2(a),2(b),2(c)示出了CA的三个示例。图2(a)中，在频带A上，频段1和频段2分别作为CC1和CC2被聚合到一起，其中，频段1和频段2之间是连续的；图2(b)中，在频带A上，频段1和频段2分别作为CC1和CC2被聚合到一起，其中，频段1和频段2之间是非连续的；图2(c)中，在频带A上的频段1作为CC1和频带B上的频段2作为CC2被聚合到一起。当然，以上只是以两个CC的聚合作为示例，实际中，CA还可以包括两个以上的CC的聚合，此处不再赘述。
在CA技术中被聚合的多个CC，可以由同一网络设备进行管理，也可以由不同网络设备分别管理。具体来说，假设存在两个CC分别为CC1和CC2，本发明实施例中涉及到的两个CC之间的交互、CC与终端之间的交互，CC方法动作的执行主体可以有如下几种情况：
当CC1和CC2由不同网络设备进行管理时，CC1方法动作的执行主体可以是CC1所在的第一网络设备；CC2方法动作的执行主体可以是CC2的所在的第二网络设备。当CC1和CC2由同一网络设备进行管理时，CC1方法动作的执行主体可以是该网络设备下管理CC1的基带板；CC2方法动作的执行主体可以是该网络设备下管理CC2的基带板。当CC1和CC2由同一网络设备下同一基带板管理时，CC1方法动作的执行主体可以是控制CC1的处理器；CC2方法动作的执行主体可以是控制CC2的处理器。需要指出的是，本发明实施例中，不管属于上述何种情况，都可以认为CC1方法的执行主体为CC1所在的第一网络设备，CC2方法的执行主体为CC2所在的第二网络设备。当由同一网络设备进行管理时，则第一网络设备和第二网络设备为同一网络设备。
C-RNTI是在媒体接入控制(media access control，MAC)分组数据单元(packet data unit，PDU)的头部添加的标识，用来识别无线资源控制(radio resource control,RRC)和调度。目前，其长度为16比特，取值范围为0～65535。
在CA场景中，PCC和SCC均用于同一个终端的数据传输，对该终端使用的C-RNTI需要保持一致。而终端的C-RNTI是在接入PCC时由PCC所在的网络设备为该终端分配。如图3所示，CC1作为PCC要为终端1聚合CC2为SCC，在激活CC2时，对于该终端1，CC2需要使用CC1分配的C-RNTI1，但是CC2可能已经将这个 C-RNTI1分配给终端2，从而两个终端的C-RNTI出现冲突，此时，需要为终端1或终端2重新分配C-RNTI，如此导致终端的业务中断，用户体验不佳。
例如，当出现C-RNTI冲突后，现有技术中通过小区切换的方式为终端1或2更换新的C-RNTI，但是这种方式会造成终端1或2的当前业务中断，用户体验不佳。
考虑到以上问题，本申请实施例在出现C-RNTI冲突时，并不重新为某个终端分配新的C-RNTI，而是让这两个终端复用C-RNTI，并在复用C-RNTI的CC上利用资源错开的方式来保证对两个终端的数据传输。
下面结合附图，详细描述本申请实施例。
图4提供了一种标识管理方法的流程示意图，用于多载波通信系统，所述通信系统包括CC1和CC2，终端1在CC1所在的第一网络设备接入无线网络，且被分配C-RNTI。
该方法可以应用于图1所示的系统架构、图2(a),图2(b)、图2(c)所示的CA技术和图3所示的应用场景。该方法包括：
401、第一网络设备向CC2所在的第二网络设备发送请求消息，所述请求消息用于请求第二网络设备为终端1分配所述C-RNTI，即第一网络设备在CC1上为终端分配的C-RNTI。
402、当所述C-RNTI被所述第二网络设备分配给终端2时，第二网络设备为终端1分配与终端2相同的所述C-RNTI，并将终端1在CC2使用的通信资源和终端2在CC2使用的通信资源错开。
本发明实施例中，当终端1通过第一网络设备接入RAN时，第一网络设备为终端1分配有C-RNTI。CC1作为终端1的PCC想要为 终端1聚合CC2作为终端1的SCC。于是触发执行步骤401。在步骤401中，可以通过在请求消息中携带C-RNTI的方式请求第二网络设备为终端1分配该C-RNTI。该请求消息可以为现有的CC1与CC2间交互的消息，例如可以为PCC向SCC请求资源的消息，例如，SCC用户设备资源申请消息。此外，该请求消息也可以为新增消息，其中可以仅包括C-RNTI，也可以包括其它信元。
第二网络设备接收第一网络设备发送的所述请求消息。通过对所述请求消息的解析，第二网络设备可以获取所述请求消息中的C-RNTI，当第二网络设备发现该C-RNTI已经被自己分配给终端2时。第二网络设备可以对终端1和终端2复用所述C-RNTI，也即，不同于现有技术中为终端1或2更换所述C-RNTI，而是仍为终端1分配所述C-RNTI，使得在CC2上终端1和终端2使用相同的C-RNTI。
为了避免后续数据传输的错误或者冲突，第二网络设备将终端1在CC2使用的通信资源和终端2在CC2使用的通信资源错开。这里的通信资源可以为时间资源，也可以为频率资源，还可以为空间资源等，此外，还可以是这些资源中某些资源的结合，例如时频资源。这里资源的错开，可以通过时域上的错开来实现，也可以通过频域上的错开来实现，此外还可以通过空间上的错开来实现，本申请不做限制。
作为一种实现方式，可以在时域上实现资源的错开。例如，第二网络设备在不同的调度周期调度终端1和终端2。具体，第二网络设备在第一调度周期调度终端1，在第二调度周期调度终端2；其中，第一调度周期不同于第二调度周期。也就是说，第二网络设备采用区 分调度周期的方式，错开使用相同C-RNTI的终端1和终端2的调度周期，终端1和终端2可以在不同的时间段去使用CC2中的资源。这种实现方式，相对于现有技术，不需要更换终端1或终端2的C-RNTI，从而解决了因此导致的业务中断的问题，此外还能够实现资源的合理利用。
作为另一种实现方式，第二网络设备使用第一资源区域与终端1进行数据传输，使用第二资源区域与终端2进行数据传输；其中所述第一资源区域不同于所述第二资源区域。也就是说，第二网络设备在CC2中选取不同的资源区域，使终端1和终端2使用的不同资源区域，这样终端1、终端2在通信过程中就不会产生资源冲突。相对于现有技术，不需要更换终端1或2，从而解决了因此导致的业务中断的问题，此外还能够实现资源的合理利用。这里的资源区域可以包括至少一个物理资源块或物理资源块对，且第一资源区域和第二资源区域包括不同的物理资源块或物理资源块对。
进一步地，例如，在同一调度周期中，第二网络设备可以基于频域，时域，或者频域和时域将CC2对应的资源分成多个资源区域，作为一种实现方式，当第二设备基于频域将CC2对应的资源分成多个资源区域时，所述多个资源区域包括与第一频段对应的第一资源区域，并将所述第一资源区域分配给终端1。实际中可能有大于两个的终端同时在CC2中使用同一个C-RNTI，那么，资源在频域上被划分成的资源区域个数，可以根据终端个数来确定，即若有N个终端在CC2使用同一个C-RNTI，则将该资源划分成N个资源区域。
C-RNTI用于加扰控制信道，例如，PDCCH，终端根据C-RNTI确定该PDCCH上的控制信息是发送给自己的。当终端1和终端2使用相同的C-RNTI时，将会产生控制信道的混淆。因此，在一较佳的实施例中，第二网络设备通知第一网络设备，启动终端1的跨载波调度，即在CC1上的控制信道发送终端1在CC2上的控制信息。例如，PDCCH内承载的控制信息用于指示PDSCH的资源位置。通过CC1上的PDCCH内承载的控制信息指示终端1在CC2上PDSCH或者PUSCH的资源位置，在CC2上的PDCCH内承载的控制信息指示终端2在CC2上PDSCH或者PUSCH的资源位置。如此，终端1和终端2便可以通过载波区分各自的控制信息。
请参考图5，图5示出了在LTE系统中跨载波调度的基本原理，PCC可以通过自身的PDCCH指示PCC的PDSCH的资源位置、PCC的PUSCH的资源位置、SCC的PDSCH的资源位置以及SCC的PUSCH的资源位置。
因此，本发明实施例的方法还可以包括：
第二网络设备向第一网络设备发送第一通知消息，第一通知消息用于通知第一网络设备启动终端1的跨载波调度。该跨载波调度包括：第一网络设备在CC1的控制信道上向终端1发送终端1在CC2的控制信息。另外，这里的启动终端1的跨载波调度，意味着第一网络设备能够实现对终端1进行跨载波调度，是一种使能的含义。
其中终端1在CC2的控制信息包括指示终端1在CC2上数据信道位置的信息，例如，终端1在CC2中PDSCH资源位置的信息。
可选地，若在步骤402中第二网络设备采用区分调度周期的方式错开终端1和终端2在CC2中的通信资源，本发明实施例的方法还可以包括：
第二网络设备向第一网络设备发送第一指示消息，所述第一指示消息用于指示所述第一网络设备在CC1的控制信道上向终端1发送终端1在CC2的控制信息。也即第二网络设备指示第一网络设备通过CC1的控制信道调度终端1在第一周期内在CC2的传输。第一指示消息的发送可以是实时的：当第二网络设备为终端1分配好第一调度周期时，就触发该第一指示消息的发送。该传输包括终端1的下行数据接收和上行数据发送。比如，具体地数据传输流程可以如下：
第二设备通过CC2的数据信道将从第一设备接收的数据发送给终端1；或者，第二设备通过CC2的数据信道接收终端1发送的数据。以上CC2和终端1的数据传输都是发生在第一调度周期中的。
若步骤402中第二网络设备采用区分资源区域的方式错开终端1和终端2在CC2中的通信资源，本发明实施例的方法还可以包括：
第二网络设备向第一网络设备发送第二指示消息，第二指示消息用于指示第一网络设备在CC1的控制信道上向终端1发送终端1在CC2的控制信息，且包括指示所述第一资源区域的信息。作为一种实现方式，若第二设备基于频域将CC2对应的资源分成多个资源区域时，多个资源区域包括与第一频段对应的第一资源区域时，指示所述第一资源区域的信息可以为指示所述第一频段的信息。
也即第二网络设备请求第一网络设备通过CC1的控制信道调度 终端1在CC2的第一资源区域上传输。所述传输包括终端1的下行数据接收和上行数据发送。比如，具体地数据传输流程可以如下：
第二设备通过CC2的数据信道将从第一设备接收的数据发送给终端1；或者，第二设备通过CC2的数据信道接收终端1发送的数据。其中，对于终端1，CC2的数据信道位于第一资源区域上。
第一网络设备接收第一指示消息，或者第二指示消息。
这样，第一网络设备可以获知终端1在CC2中所可以被调度的周期段或者实际使用的资源区域，然后再向终端1发送控制信息，实现终端1在CC2中对应调度周期或者对应资源区域上的数据传输。
作为一种实现方式，第一通知消息还可以用于通知给第一网络设备：终端1与终端2在CC2使用相同的C-RNTI，或者说，在CC2中终端1与终端2的C-RNTI冲突。当然，第二网络设备还可以向第一网络设备发送第二通知消息来实现上述功能。当然，第二网络设备进一步可以在第一通知消息中或者第二通知消息中将错开终端1和终端2在CC2中使用的通信资源的具体方式提供给第一网络设备，这样做的好处是尽可能在时间上提早告知第一网络设备冲突的解决方式，有利于第一网络设备协调好在CC1后续调度安排。
本发明实施例提供的技术方案，在CC1作为PCC为终端聚合CC2为SCC时，所述终端对应的C-RNTI在所述CC2已被占用的情况下，SCC通过对所述终端和其它终端复用该C-RNTI、将所述终端与其它终端在CC2中的通信资源错开，该技术方案不同于现有技术，终端无需更换C-RNTI，避免因业务中断而导致的用户体验不佳。
上述主要从各个网络设备之间交互、网络设备和终端之间的交互的角度对本发明实施例提供的方案进行了介绍。可以理解的是，网络设备，终端等为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本发明能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
图6示出了上述实施例中所涉及的网络设备的一种可能的结构示意图。
网络设备包括发射器/接收器601,控制器/处理器602，存储器603以及通信单元604。所述发射器/接收器601用于支持网络设备与终端之间收发信息，以及支持所述终端与其他终端之间进行无线电通信。所述控制器/处理器602执行各种用于与其它网络设备或者终端的通信的功能。在上行链路，来自所述终端的上行链路信号经由天线接收，由接收器601进行调解，并进一步由控制器/处理器602进行处理来恢复终端所发送到业务数据和信令信息。在下行链路上，业务数据和信令消息由控制器/处理器602进行处理，并由发射器601进行调解来产生下行链路信号，并经由天线发射给终端。控制器/处理器602还执行图4对应的方法实施例中涉及第一网络设备或者第二网 络设备的处理过程和/或用于本申请所描述的技术的其他过程。存储器603用于存储网络设备的程序代码和数据。接口单元604用于支持网络设备与其他网络设备进行通信，例如，其可以实现X2口或者S1口的通信。
可以理解的是，图6仅仅示出了网络设备的简化设计。在实际应用中，网络设备可以包含任意数量的发射器，接收器，处理器，控制器，存储器，接口单元等，而所有可以实现本发明的网络设备都在本发明的保护范围之内。
图7为本发明实施例提供的网络设备700，网络设备700可以包括处理单元710和接口单元720。其中，处理单元710能够实现图6中第一网络设备，或者第二网络设备的控制器/处理器602的功能；接口单元720能够实现图6中网络设备的接口单元604的功能。
本领域技术人员还可以了解到本发明实施例列出的各种说明性逻辑块(illustrative logical block)和步骤(step)可以通过电子硬件、电脑软件，或两者的结合进行实现。为清楚展示硬件和软件的可替换性(interchangeability)，上述的各种说明性部件(illustrative components)和步骤已经通用地描述了它们的功能。这样的功能是通过硬件还是软件来实现取决于特定的应用和整个系统的设计要求。本领域技术人员可以对于每种特定的应用，可以使用各种方法实现所述的功能，但这种实现不应被理解为超出本发明实施例保护的范围。
本发明实施例中所描述的各种说明性的逻辑块，模块和电路可以通过通用处理单元，数字信号处理单元，专用集成电路(ASIC)，现场可编程门阵列(FPGA)或其它可编程逻辑装置，离散门或晶体管逻辑，离散硬件部件，或上述任何组合的设计来实现或操作所描述的 功能。通用处理单元可以为微处理单元，可选地，该通用处理单元也可以为任何传统的处理单元、控制器、微控制器或状态机。处理单元也可以通过计算装置的组合来实现，例如数字信号处理单元和微处理单元，多个微处理单元，一个或多个微处理单元联合一个数字信号处理单元核，或任何其它类似的配置来实现。
本发明实施例中所描述的方法或算法的步骤可以直接嵌入硬件、处理单元执行的软件模块、或者这两者的结合。软件模块可以存储于RAM存储器、闪存、ROM存储器、EPROM存储器、EEPROM存储器、寄存器、硬盘、可移动磁盘、CD-ROM或本领域中其它任意形式的存储媒介中。示例性地，存储媒介可以与处理单元连接，以使得处理单元可以从存储媒介中读取信息，并可以向存储媒介存写信息。可选地，存储媒介还可以集成到处理单元中。处理单元和存储媒介可以配置于ASIC中，ASIC可以配置于用户终端中。可选地，处理单元和存储媒介也可以配置于用户终端中的不同的部件中。
在一个或多个示例性的设计中，本发明实施例所描述的上述功能可以在硬件、软件、固件或这三者的任意组合来实现。如果在软件中实现，这些功能可以存储与电脑可读的媒介上，或以一个或多个指令或代码形式传输于电脑可读的媒介上。电脑可读媒介包括电脑存储媒介和便于使得让电脑程序从一个地方转移到其它地方的通信媒介。存储媒介可以是任何通用或特殊电脑可以接入访问的可用媒体。例如，这样的电脑可读媒体可以包括但不限于RAM、ROM、EEPROM、CD-ROM或其它光盘存储、磁盘存储或其它磁性存储装置，或其它任何可以用于承载或存储以指令或数据结构和其它可被通用或特殊电脑、或通用或特殊处理单元读取形式的程序代码的媒介。此外，任何连接都可以被适当地定义为电脑可读媒介，例如，如果软件是从一 个网站站点、服务器或其它远程资源通过一个同轴电缆、光纤电脑、双绞线、数字用户线(DSL)或以例如红外、无线和微波等无线方式传输的也被包含在所定义的电脑可读媒介中。所述的碟片(disk)和磁盘(disc)包括压缩磁盘、镭射盘、光盘、DVD、软盘和蓝光光盘，磁盘通常以磁性复制数据，而碟片通常以激光进行光学复制数据。上述的组合也可以包含在电脑可读媒介中。
本发明说明书的上述描述可以使得本领域技术任何可以利用或实现本发明的内容，任何基于所公开内容的修改都应该被认为是本领域显而易见的，本发明所描述的基本原则可以应用到其它变形中而不偏离本发明的发明本质和范围。因此，本发明所公开的内容不仅仅局限于所描述的实施例和设计，还可以扩展到与本发明原则和所公开的新特征一致的最大范围。

Claims (26)

  1. 一种标识管理方法，其特征在于，用于多载波通信系统，所述多载波通信系统包括第一载波和第二载波，第一终端在所述第一载波所在的第一网络设备接入无线网络，且被分配无线网络临时标识C-RNTI，所述方法包括：
    所述第二载波所在的第二网络设备接收所述第一网络设备发送的请求消息，所述请求消息用于请求所述第二网络设备为所述第一终端分配所述C-RNTI；
    当所述C-RNTI被所述第二网络设备分配给第二终端时，所述第二网络设备为所述第一终端分配与所述第二终端相同的所述C-RNTI，并将所述第一终端在所述第二载波使用的通信资源和所述第二终端在所述第二载波使用的通信资源错开。
  2. 如权利要求1所述的方法，其特征在于，所述方法还包括：
    所述第二网络设备向所述第一网络设备发送第一通知消息，所述第一通知消息用于通知所述第一网络设备对所述第一终端启动跨载波调度，所述跨载波调度包括：所述第一网络设备在所述第一载波的控制信道上向所述第一终端发送所述第一终端在所述第二载波的控制信息。
  3. 如权利要求2所述的方法，其特征在于，所述第一终端在所述第二载波的控制信息包括指示所述第一终端在所述第二载波上的数据信道位置的信息。
  4. 如权利要求1-3任一所述的方法，其特征在于，所述第二网 络设备将所述第一终端在所述第二载波使用的通信资源和所述第二终端在所述第二载波使用的通信资源错开，包括：
    所述第二网络设备在第一调度周期调度所述第一终端，在第二调度周期调度所述第二终端；其中，所述第一调度周期不同于所述第二调度周期。
  5. 如权利要求4所述的方法，其特征在于，所述第二网络设备将所述第一终端在所述第二载波使用的通信资源和所述第二终端在所述第二载波使用的通信资源错开之后，所述方法还包括：
    所述第二网络设备向所述第一网络设备发送第一指示消息，所述第一指示消息用于指示所述第一网络设备在所述第一载波的控制信道上向所述第一终端发送所述第一终端在所述第二载波的控制信息。
  6. 如权利要求1-3任一所述的方法，其特征在于，所述第二网络设备将所述第一终端在所述第二载波使用的通信资源和所述第二终端在所述第二载波使用的通信资源错开，包括：
    所述第二网络设备使用第一资源区域与所述第一终端进行数据传输，使用第二资源区域与所述第二终端进行数据传输；其中所述第一资源区域不同于所述第二资源区域。
  7. 如权利要求6述的方法，其特征在于，所述方法还包括：
    所述第二网络设备向所述第一网络设备发送第二指示消息，所述第二指示消息用于指示所述第一网络设备在所述第一载波的控制信道上向所述第一终端发送所述第一终端在所述第二载波的控制信息，且包括指示所述第一资源区域的信息。
  8. 如权利要求2-7任一所述的方法，其特征在于，
    所述第一通知消息还用于通知所述第一终端与所述第二终端使用的相同的所述C-RNTI；或者，所述方法还包括：
    所述第二网络设备向所述第一网络设备发送第二通知消息，所述第二通知消息用于通知所述第一终端与所述第二终端使用的相同的所述C-RNTI。
  9. 一种标识管理方法，其特征在于，用于多载波通信系统，所述多载波通信系统包括第一载波和第二载波，第一终端在所述第一载波所在的第一网络设备接入无线网络，且被分配无线网络临时标识C-RNTI，所述方法包括：
    第一网络设备向第二载波所在的第二网络设备发送请求消息，所述请求消息用于请求所述第二网络设备为所述第一终端分配所述C-RNTI；
    当所述第一终端在所述第二载波中与第二终端使用相同的所述C-RNTI时，所述第一网络设备接收所述第二网络设备发送的指示消息，所述指示消息用于指示所述第一网络设备在所述第一载波的控制信道上向所述第一终端发送所述第一终端在所述第二载波的控制信息，且所述第一终端在所述第二载波中使用的通信资源与所述第二终端在所述第二载波中使用的通信资源是错开的。
  10. 如权利要求9所述的方法，其特征在于，所述方法还包括：
    所述第一网络设备接收所述第二网络设备发送的通知消息，所述通知消息用于通知所述第一网络设备对所述第一终端启动跨载波调 度，所述跨载波调度包括：所述第一网络设备在所述第一载波的控制信道上向所述第一终端发送所述第一终端在所述第二载波的控制信息。
  11. 如权利要求10所述的方法，其特征在于，所述第一终端在所述第二载波的控制信息包括指示所述第一终端在所述第二载波上的数据信道位置的信息。
  12. 如权利要求9-11任一所述的方法，其特征在于，所述第一终端在所述第二载波中使用的通信资源与所述第二终端在所述第二载波中使用的通信资源是错开的，包括：所述第一终端的调度周期不同于所述第二终端的调度周期。
  13. 如权利要求9-11任一所述的方法，其特征在于，所述第一终端在所述第二载波中使用的通信资源与所述第二终端在所述第二载波中使用的通信资源是错开的，包括：所述第一终端使用的资源区域不同于所述第二终端使用的资源区域。
  14. 一种第二网络设备，其特征在于，用于多载波通信系统，所述多载波通信系统包括第一载波和第二载波，所述第二网络设备为所述第二载波所在的网络设备，第一终端在所述第一载波所在的第一网络设备接入无线网络，且被分配无线网络临时标识C-RNTI，所述第二网络设备包括：
    接口单元，用于接收所述第一网络设备发送的请求消息，所述请求消息用于请求所述第二网络设备为所述第一终端分配所述C-RNTI；
    处理单元，当所述C-RNTI被所述第二网络设备分配给第二终端时，用于为所述第一终端分配与所述第二终端相同的所述C-RNTI，并将所述第一终端在所述第二载波使用的通信资源和所述第二终端在所述第二载波使用的通信资源错开。
  15. 如权利要求14所述的第二网络设备，其特征在于，所述接口单元还用于向所述第一网络设备发送第一通知消息，所述第一通知消息用于通知所述第一网络设备对所述第一终端启动跨载波调度，所述跨载波调度包括：所述第一网络设备在所述第一载波的控制信道上向所述第一终端发送所述第一终端在所述第二载波的控制信息。
  16. 如权利要求15所述的第二网络设备，其特征在于，所述第一终端在所述第二载波的控制信息包括指示所述第一终端在所述第二载波上的数据信道位置的信息。
  17. 如权利要求14-16任一所述的第二网络设备，其特征在于，所述处理单元用于为所述第一终端分配与所述第二终端相同的所述C-RNTI，并将所述第一终端在所述第二载波使用的通信资源和所述第二终端在所述第二载波使用的通信资源错开包括：在第一调度周期调度所述第一终端，在第二调度周期调度所述第二终端；其中，所述第一调度周期不同于所述第二调度周期。
  18. 如权利要求17所述的第二网络设备，其特征在于，在所述处理单元将所述第一终端在所述第二载波使用的通信资源和所述第二终端在所述第二载波使用的通信资源错开之后，所述接口单元还用于，向所述第一网络设备发送第一指示消息，所述第一指示消息用于 指示所述第一网络设备在所述第一载波的控制信道上向所述第一终端发送所述第一终端在所述第二载波的控制信息。
  19. 如权利要求14-16任一所述的第二网络设备，其特征在于，所述处理单元用于为所述第一终端分配与所述第二终端相同的所述C-RNTI，并将所述第一终端在所述第二载波使用的通信资源和所述第二终端在所述第二载波使用的通信资源错开包括：使用第一资源区域与所述第一终端进行数据传输，使用第二资源区域与所述第二终端进行数据传输；其中所述第一资源区域不同于所述第二资源区域。
  20. 如权利要求19所述的第二网络设备，其特征在于，所述接口单元还用于，向所述第一网络设备发送第二指示消息，所述第二指示消息用于指示所述第一网络设备在所述第一载波的控制信道上向所述第一终端发送所述第一终端在所述第二载波的控制信息，且包括指示所述第一资源区域的信息。
  21. 如权利要求15-20所述的第二网络设备，其特征在于，
    所述第一通知消息还用于通知所述第一终端与所述第二终端使用的相同的所述C-RNTI；或者，
    所述接口单元还用于向所述第一网络设备发送第二通知消息，所述第二通知消息用于通知所述第一终端与所述第二终端使用的相同的所述C-RNTI。
  22. 一种第一网络设备，其特征在于，用于多载波通信系统，所述多载波通信系统包括第一载波和第二载波，第一终端在所述第一载波所在的所述第一网络设备接入无线网络，所述第一网络设备包括：
    处理单元，用于为所述第一终端分配无线网络临时标识C-RNTI；
    接口单元，用于向第二载波所在的第二网络设备发送请求消息，所述请求消息用于请求所述第二网络设备为所述第一终端分配所述C-RNTI；
    当所述第一终端在所述第二载波中与第二终端使用相同的所述C-RNTI时，所述接口单元还用于接收所述第二网络设备发送的指示消息，所述指示消息用于指示所述第一网络设备在所述第一载波的控制信道上向所述第一终端发送所述第一终端在所述第二载波的控制信息，且所述第一终端在所述第二载波中使用的通信资源与所述第二终端在所述第二载波中使用的通信资源是错开的。
  23. 如权利要求22所述的第一网络设备，其特征在于，所述接口单元还用于，接收所述第二网络设备发送的通知消息，所述通知消息用于通知所述第一网络设备对所述第一终端启动跨载波调度，所述跨载波调度包括：所述第一网络设备在所述第一载波的控制信道上向所述第一终端发送所述第一终端在所述第二载波的控制信息。
  24. 如权利要求23所述的第一网络设备，其特征在于，所述第一终端在所述第二载波的控制信息包括指示所述第一终端在所述第二载波上的数据信道位置的信息。
  25. 如权利要求22-24任一所述的第一网络设备，其特征在于，所述第一终端在所述第二载波中使用的通信资源与所述第二终端在所述第二载波中使用的通信资源是错开的具体包括：所述第一终端的调度周期不同于所述第二终端的调度周期。
  26. 如权利要求22-24任一所述的第一网络设备，其特征在于，所述第一终端在所述第二载波中使用的通信资源与所述第二终端在所述第二载波中使用的通信资源是错开的具体包括：所述第一终端使用的资源区域不同于所述第二终端使用的资源区域。
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CA3025695A1 (en) 2017-12-21
KR20190008952A (ko) 2019-01-25
US20190124705A1 (en) 2019-04-25
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BR112018075971A2 (pt) 2019-04-02

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