WO2016107520A1 - 针对寻呼消息的资源分配方法及网络节点和用户设备 - Google Patents

针对寻呼消息的资源分配方法及网络节点和用户设备 Download PDF

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Publication number
WO2016107520A1
WO2016107520A1 PCT/CN2015/099197 CN2015099197W WO2016107520A1 WO 2016107520 A1 WO2016107520 A1 WO 2016107520A1 CN 2015099197 W CN2015099197 W CN 2015099197W WO 2016107520 A1 WO2016107520 A1 WO 2016107520A1
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Prior art keywords
resource allocation
user equipment
indication information
allocation indication
resource
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PCT/CN2015/099197
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English (en)
French (fr)
Inventor
沈兴亚
刘仁茂
肖芳英
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夏普株式会社
沈兴亚
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Priority to US15/540,392 priority Critical patent/US20180007658A1/en
Publication of WO2016107520A1 publication Critical patent/WO2016107520A1/zh

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    • 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
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02—Arrangements for increasing efficiency of notification or paging channel
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/005—Transmission of information for alerting of incoming communication
    • 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
    • H04W72/20—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 the field of wireless communication technologies. More specifically, the present invention relates to a resource allocation method for inter-machine communication (MTC) paging messages and corresponding network nodes and user equipment.
  • MTC inter-machine communication
  • LTE Long Term Evolution
  • 3GPP 3rd Generation Partnership Project
  • OFDMA orthogonal frequency division multiple
  • MIMO multiple antenna
  • the Release 10 version of 3GPP has been officially recognized and tested by the International Telecommunication Union as the fourth-generation global mobile communication standard LTE-Advanced.
  • carrier aggregation (CA) and relay technologies are introduced to enhance the uplink/downlink MIMO technology while supporting the deployment of heterogeneous networks (HetNet).
  • HetNet heterogeneous networks
  • MTC Machine Type Communication
  • the GSM network supports the migration to the LTE network support, and defines several types of new LTE user equipment (UE: User Equipment), one of which is called a low-cost MTC UE, which is a low-cost MTC user.
  • UE User Equipment
  • the device supports the MTC service in all duplex modes of the existing LTE network, and has such performance: 1) single receiving antenna; 2) downlink and uplink maximum transmission block size (TBS: Transport Block Size) is 1000 bits; 3a The baseband bandwidth of the downlink data channel is reduced to 1.4 MHz, the bandwidth of the downlink control channel is consistent with the bandwidth of the network side system, the uplink channel bandwidth, and the radio frequency portion of the downlink and the user equipment in the existing LTE network. Consistent; 3b) The baseband bandwidth of the downlink/uplink control channel and data channel is reduced to 1.4 MHz.
  • TBS Transport Block Size
  • MTC is a data communication service that does not require human involvement.
  • Large-scale deployment of MTC user equipment can be used in security, tracking, billing, measurement, and consumer electronics.
  • Applications include video surveillance, supply chain tracking, smart meters, and remote monitoring.
  • MTC user equipment requires lower power consumption, supports lower data transmission rates and lower mobility.
  • the LTE system is mainly aimed at human-to-human (H2H) communication services. Therefore, the key to achieving the scale competitive advantage and application prospect of MTC services is that LTE networks support low-cost MTC devices.
  • MTC user equipment needs to be installed in the basement of the residential building or protected by insulated foil, metal window or thick wall of traditional buildings, compared to conventional equipment terminals (such as mobile phones, tablets, etc.) in LTE networks.
  • the air interface will obviously suffer from more severe penetration losses.
  • 3GPP decided to study the design and performance evaluation of the LTE network to provide additional 20dB/15dB coverage enhancement services to MTC user equipment. It is worth noting that MTC user equipment located in poor network coverage has such characteristics: very low data transmission rate, very relaxed delay requirements, and limited mobility.
  • the LTE network can further optimize some signaling and/or channels to support the MTC user equipment.
  • 3GPP requires certain LTE network coverage enhancements for newly defined MTC user equipment and other user equipment running MTC services (eg, very loose delay requirements), where, for example, 15 dB is provided for LTE Frequency Division Duplex (FDD) networks. Network coverage is enhanced. In addition, not all user devices that use MTC services require the same network coverage enhancements.
  • LTE network coverage enhancements for newly defined MTC user equipment and other user equipment running MTC services (eg, very loose delay requirements), where, for example, 15 dB is provided for LTE Frequency Division Duplex (FDD) networks. Network coverage is enhanced.
  • FDD Frequency Division Duplex
  • Non-Patent Document RP-140990 New Work Item on Even
  • Lower Complexity and Enhanced Coverage LTE UE for MTC, Ericsson, NSN the LTE Rel-13 system needs an MTC user equipment (hereinafter referred to as a narrowband MTC UE) supporting uplink and downlink 1.4 MHz radio frequency bandwidth to operate in any system bandwidth (for example, 1.4 MHz, 3 MHz, 5 MHz, 10 MHz, Under 15MHz, 20MHz, etc.), and provide coverage enhancement for this type of MTC users.
  • a narrowband MTC UE MTC user equipment supporting uplink and downlink 1.4 MHz radio frequency bandwidth to operate in any system bandwidth (for example, 1.4 MHz, 3 MHz, 5 MHz, 10 MHz, Under 15MHz, 20MHz, etc.), and provide coverage enhancement for this type of MTC users.
  • low-cost MTC users and coverage-enhanced MTC users should adopt a unified design. Reducing the energy consumption of MTC user equipment is one of the main objectives of this
  • the coverage enhancement design and configuration of the physical layer channel such as (E)PDCCH/PDSCH/PUCCH/PUSCH is a work that needs to be standardized.
  • the coverage enhancement design and configuration of the physical layer channel such as (E)PDCCH/PDSCH/PUCCH/PUSCH is a work that needs to be standardized.
  • Its configuration mode depends on the base station side.
  • the combined demodulation of a large amount of duplicate data by the MTC user equipment introduces a delay of 2 to 10 seconds. This delay increases the power consumption of the MTC user equipment.
  • the transmission of the data channel should be after the control channel transmission is completed. Therefore, in order to reduce the power consumption of the user equipment, the physical downlink control channel may not be needed for paging message transmission that needs to cover the enhanced MTC user equipment.
  • the low complexity MTC UE has similar information transmission mechanism to the coverage enhanced MTC user equipment, it is necessary to design a simultaneous application for coverage enhanced MTC user equipment and/or low complexity or low cost.
  • the paging message transmission mechanism of the MTC user equipment that is, a mechanism for transmitting a paging message without a corresponding physical downlink control channel needs to be designed. Therefore, the resource allocation manner for the paging information of the MTC user equipment in the frequency domain needs to be redesigned.
  • the present invention is directed to a frequency domain resource allocation mechanism that is simultaneously applicable to, for example, a paging message covering an enhanced MTC user equipment and/or a low complexity or low cost MTC user equipment, and a network node and user equipment performing the mechanism .
  • a method for frequency domain resource allocation for a paging message performed by a network node comprising: allocating a resource block set for transmitting a paging message to an MTC user equipment; and The MTC user equipment sends resource allocation indication information, where the resource allocation indication information includes first information indicating a location of a start resource block of the resource block set and a number indicating consecutively allocated resource blocks included in the resource block set. Second message.
  • a method for receiving a frequency domain resource allocation for a paging message by an inter-machine communication MTC user equipment comprising: receiving resource allocation indication information for a paging message from a network node,
  • the resource allocation indication information includes first information indicating a location of a start resource block to which a resource block set for transmitting a paging message to the MTC user equipment is allocated, and a number indicating a number of consecutively allocated resource blocks included in the resource block set Second information; and, the resource allocation indication information received by the application.
  • a wireless telecommunications system supporting MTC includes: an allocation module, configured to: allocate a resource block set for sending a paging message to the MTC user equipment; and the communication module is configured to: send resource allocation indication information to the MTC user equipment,
  • the resource allocation indication information includes first information indicating a location of a start resource block of the resource block set and second information indicating a number of consecutively allocated resource blocks included in the resource block set.
  • an inter-machine communication MTC user equipment comprising: a communication module, configured to: receive resource allocation indication information for a paging message from a network node, where the resource allocation indication information includes an indication allocation First information of a location of a start resource block of a resource block set for transmitting a paging message to an MTC user equipment; and second information indicating a number of consecutively allocated resource blocks included in the resource block set; and, a configuration module , configured to: the resource allocation indication information received by the application.
  • the network node may be a base station or a Mobility Management Entity (MME).
  • MME Mobility Management Entity
  • the resource allocation indication information may be carried by a system information block, or may be carried by a non-access stratum (NAS) message.
  • NAS non-access stratum
  • paging messages for MTC user equipment of different coverage enhancement levels may be assigned different frequency domain resources (ie, resource block sets).
  • the resource allocation indication information may include a plurality of the first information and a plurality of the second information respectively for different coverage enhancement levels.
  • the lifetime may be set in the MTC user equipment for the received resource allocation indication information. If the resource allocation indication information applied in the MTC user equipment exceeds the lifetime, the resource allocation indication information may be deleted.
  • the MTC user equipment when the MTC user equipment is in a radio resource control connection (RCC CONNECT) state and/or a radio resource control idle (RRC IDLE) state, it is required to maintain valid resource allocation indication information.
  • RRC CONNECT radio resource control connection
  • RRC IDLE radio resource control idle
  • the MTC user equipment when the MTC user equipment needs to obtain a paging message, the MTC user equipment needs to determine a starting position of the paging message in the frequency domain according to the applied (ie, valid) resource allocation indication information. And determining the number of physical resource blocks occupied by the paging message in the frequency domain.
  • FIG. 1 shows a flow chart of a paging message frequency domain resource allocation method according to an embodiment of the present invention, which can be implemented in an MTC communication system;
  • FIG. 2 is a schematic structural diagram of a network node according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of an MTC user equipment according to an embodiment of the present invention.
  • Figure 4 shows a schematic diagram of a set of resource blocks carrying different levels of paging messages.
  • the present invention is applicable to paging of user equipments requiring additional coverage enhancement or low complexity/low cost MTC user equipment and other MTC services supporting delay tolerance and requiring certain coverage enhancement.
  • the frequency domain resource allocation method of the message and the network node and the MTC User Equipment (UE) performing the method are elaborated.
  • UE User Equipment
  • the embodiments of the present invention are specifically described below with the LTE mobile communication system and its subsequent evolved versions as example application environments. However, it should be noted that the present invention is not limited to the following embodiments, but can be applied to more other wireless communication systems, such as future 5G cellular communication systems.
  • the communication systems, network nodes and user equipment mentioned refer to communication systems, network nodes and user equipment supporting MTC.
  • the SystemInformationBlockType2 message includes a pcch-Config cell (IE: information element), which is used to configure a paging frame (PF: Paging Frame) and a paging opportunity for the user to receive a paging message in the time domain.
  • IE information element
  • PF Paging Frame
  • PO Paging Occasion
  • Configuration parameters such as frequency domain resource allocation parameters for paging messages, are sent to the user.
  • the paging message needs to be received in the RRC IDLE state. Therefore, the embodiment of the present invention proposes that the corresponding paging message configuration parameter should be placed in a system information or a non-access stratum (NAS: Non Access Stratum) message.
  • NAS Non Access Stratum
  • determining a physical resource block to which a paging message is mapped in one subframe requires at least two parameters, such as a starting location of a resource block set carrying a paging message (eg, a starting resource block). Location) and the size of the resource block set (for example, the number of resource blocks allocated in succession). 4 shows an example of a resource block set carrying different levels of paging messages, in which the relationship between the size and starting location of each resource block set and the paging message level is specifically shown.
  • the level of the paging message here refers to the repetition level after the paging message is mapped to the physical channel, and the paging messages of different levels are for different coverage enhancement levels.
  • the embodiment of the present invention provides that, in the case that the physical downlink control channel corresponding to the paging message is not transmitted, the location of the paging message for the MTC user equipment in the frequency domain may be indicated by the indication for carrying the paging message.
  • the information of the starting position of the resource block set and the information indicating the number of the resource block set are given. A detailed description will be made below with reference to FIG. 1.
  • the MTC communication system may include one or more MTC-capable network nodes 10 and one or more MTC-enabled user equipment MTC UEs 20. Although only one network node 10 and one MTC UE are shown in the figure, the present invention is not limited in this regard. It should also be understood that the MTC communication system can include an access network and a core network.
  • the network node 10 may be a base station or a mobility management entity (MME) in the core network.
  • MME mobility management entity
  • the network node 10 determines the resource allocation to the paging resource. Specifically, the network node 10 allocates a set of resource blocks for transmitting paging messages to the MTC user equipment.
  • the resource allocation indication information includes first information indicating a location of a start resource block of the resource block set (eg, labeled startindex) and a second number indicating a number of consecutively allocated resource blocks included in the resource block set Information (for example, labeled numberofprb).
  • the resource allocation indication information includes different coverage enhancement levels respectively a plurality of the first information and a plurality of the second information.
  • the resource allocation indication information includes a plurality of paging information frequency domain resource allocations for different coverage enhancement levels.
  • step S202 the MTC UE 20 receives the resource allocation indication information from the network node.
  • the MTC UE 20 can apply the received resource allocation indication information.
  • the received resource allocation indication information can be applied to configuration parameters related to obtaining a paging message.
  • the configuration information of the Paging Control Channel (PCCH) is included in the system information
  • some embodiments of the present invention propose that the paging message related configuration parameters can be included in the system information.
  • the network node 10 in Figure 1 may be a base station.
  • the resource allocation indication information may be carried by a system information block broadcast by the base station to the user equipment.
  • the network node 10 in Figure 1 may be a mobility management entity in the core network.
  • the resource allocation indication information may be carried by using a NAS message. It should be understood that the resource allocation indication information in the NAS message is transparently transmitted to the base station. It is not necessary to interpret the resource allocation indication information at the base station side.
  • system information for an MTC user equipment may be referred to as SI_MTC, or as SystemInformationBlock 18.
  • the system information block includes at least cells associated with the MTC user equipment paging message configuration. For example, two cells numberofprb and startindex may be introduced in SystemInformationBlock18, where numberofprb is used to indicate the number of consecutively allocated resource blocks, and startindex is used to indicate the location of the starting resource block.
  • the numberofprb cell and the startindex cell may be included in one of the system information blocks, for example, the numberofprb cell and the startindex cell may be included in the MTC user equipment. In a system information block.
  • the value of the numberofprb cell may be a set of integers corresponding to a range of values (for example, the range is 1 to 6).
  • L0 refers to the coverage enhancement level 0, that is, the user equipment that does not need to cover the enhancement, and the value of the corresponding cell is a limited range of integers (such as 1 to 6);
  • L1 refers to the coverage enhancement level.
  • the user equipment that needs to cover the enhancement for example, 1 to 5 dB enhancement
  • the value of the corresponding cell is a limited range of integers (such as 1 to 6)
  • L2 refers to the coverage enhancement level 2 that is, User equipment that needs to be enhanced (for example, 6 to 10 dB enhancement), the value of the corresponding cell is a limited number of integers (such as 1 to 6);
  • L3 refers to coverage enhancement level 3, that is, coverage enhancement is required.
  • the value of the corresponding cell is a limited number of integers (such as 1 to 6).
  • the user equipment needs coverage enhancement means that the physical channel received by the user equipment needs coverage enhancement, and the coverage enhancement of the physical channel mainly depends on two ways: control channel repetition transmission such as PBCH/EPDCCH/PUCCH/PRACH; or Data channel subframe bundling transmission such as PDSCH/PUSCH.
  • control channel repetition transmission such as PBCH/EPDCCH/PUCCH/PRACH
  • Data channel subframe bundling transmission such as PDSCH/PUSCH.
  • the value of the startindex cell may be a set of integers corresponding to a range of values (for example, a value range of 0 to 5).
  • L0 refers to the coverage enhancement level 0, that is, the user equipment that does not need to cover the enhancement, and the value of the corresponding cell is a limited integer (such as 0 to 5);
  • L1 Refers to the coverage enhancement level 1, that is, the user equipment that needs coverage enhancement (for example, 1 to 5 dB enhancement), and the corresponding cell value is a limited range of integers (such as 0 to 5);
  • L2 refers to It is a coverage enhancement level 2, that is, a user equipment that needs coverage enhancement (for example, 6 to 10 dB enhancement), and the corresponding cell value is a limited range of integers (such as 0 to 5);
  • L3 refers to coverage enhancement.
  • Level 3 that is, the user equipment that needs to cover the enhancement (for example, 11 to 15 dB enhancement), and the value of the corresponding cell is a limited range of integers (such as 0 to 5).
  • the user equipment needs coverage enhancement means that the physical channel received by the user equipment needs coverage enhancement, and the coverage enhancement of the physical channel mainly depends on two ways: control channel repetition transmission such as PBCH/EPDCCH/PUCCH/PRACH; or Data channel subframe bundling transmission such as PDSCH/PUSCH.
  • the embodiment of the present invention proposes that a cell similar to the existing PCCH-Config but including the numberofprb cell and the startindex cell (for example, PCCH-Config-r13) may be defined as the MTC user equipment proposed by the present invention.
  • Call message Resource allocation indication information For details of PCCH-Config, refer to Section 3 of the 3GPP TS 36.331 v12.3.0 "3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC); Protocol specification”. 6.3.2 radioResourceConfigCommon information element.
  • PCCH-Config-r13 The format of PCCH-Config-r13 can be as shown in Table 1 below (the difference between it and the existing PCCH-Config is shown in bold).
  • the cell PCCH-Config-r13 is used to configure the corresponding parameters of the paging control channel requiring additional coverage enhancement or low complexity/low cost MTC user equipment.
  • the cell radioResourceConfigCommonSIB cell defined in Section 6.3.2 of 3GPP TS 36.331 v12.3.0 may be modified to include the PCCH-Config-r13.
  • the modified radioResourceConfigCommonSIB cell can be as shown in Table 2 below (the modification is shown in bold).
  • the modified cell RadioResourceConfigCommonSIB containing the cell PCCH-Config-r13 may be included in system information for an additional coverage enhancement or low complexity/low cost MTC user equipment, for example, may be included in SystemInformationBlock 20.
  • the MTC user equipment needs to ensure that the required system information (such as SI_MTC or SystemInformationBlockType20) is in the RRC_IDLE state, or in the RRC_CONNECTED state, or in the PSM (Power Saving Mode) state.
  • the lifetime eg, 3 hours
  • the system information saved in the user device has reached the end of its life, the system information is deleted unless otherwise stated. If the only valid version is deleted, you will need to re-read the system information.
  • the MTC user equipment After the MTC user equipment receives the required system information (such as SystemInformationBlockType20), the user equipment needs to apply the configuration information contained in the radioResourceConfigCommonSIB.
  • the required system information such as SystemInformationBlockType20
  • the user equipment When the user equipment needs to obtain a paging message, the user equipment needs to:
  • NAS Non-Access Stratum
  • the NAS_MTC message includes at least an associated cell configured by the MTC user equipment paging message. For example, two cells numberofprb and startindex may be introduced in the NAS_MTC message, where numberofprb is used to indicate the number of consecutively allocated resource blocks, and startindex is used to indicate the starting position of the resource block.
  • Some embodiments of the present invention propose that a cell similar to the existing Downlink NAS Transport but including numberofprb cells and startindex cells (for example, a downlink MTC non-access stratum transmission message, or It is called Downlink MTC NAS Transport) as the resource allocation indication information for the MTC user equipment paging message proposed by the present invention.
  • the Downlink NAS Transport message can refer to the Downlink NAS Transport defined in section 8.2.12 of the existing TS 24.301 Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS).
  • NAS Non-Access-Stratum
  • EPS Evolved Packet System
  • the format of the Downlink MTC NAS Transport downlink MTC non-access stratum message can be as shown in Table 3 below.
  • the Downlink MTC NAS Transport message contains four cells, namely protocol discriminator cell, security header type cell, and downlink non-access stratum transport message flag (Downlink MTC NAS). Transport message identity) A cell, MTC non-access stratum message bearer (MTC NAS message container) cell.
  • the first four bits of the first octet are protocol authentication cells, which can take the value 0010.
  • the protocol authentication cell format can be seen in section 11.2.3.1 in TS 24.007.
  • the last four digits of the first octet are security header type cells.
  • the specific value can be seen in section 24.3.1 Security header type in TS 24.301.
  • the second octet is a downlink non-access stratum transport message flag cell, and the section 9.8.1 Message type cell in TS 24.301 can be modified to include a downlink non-access stratum transport message identification cell.
  • the modified cell can take the value 01101010.
  • the section 9.9.3.22 NAS message container cell in TS 24.301 can be modified to include the MTC non-access stratum message bearer cell.
  • the format of the MTC non-access stratum message bearer cell may be as shown in Table 4, wherein the numberofprb cell and the startindex cell are included in the MTC non-access stratum message bearer cell content in Table 4.
  • the user equipment When the user equipment needs to obtain a paging message, the user equipment needs to:
  • FIG. 2 shows a schematic structural diagram of a network node 10 according to an embodiment of the present invention.
  • network node 10 is a base station.
  • network node 10 may be a mobility management entity in the core network.
  • network power save 10 can include a distribution module 12 and a communication module 14.
  • the allocation module 12 can be configured to allocate a set of resource blocks for transmitting paging messages to the MTC user equipment.
  • the communication module 14 can be configured to: send resource allocation indication information to the MTC user equipment.
  • the resource allocation indication information includes first information indicating a location of a start resource block of the resource block set (eg, the above startindex) and second information indicating a number of consecutively allocated resource blocks included in the resource block set. (for example, numberofprb above).
  • the communication module 14 is further configured to: carry the resource allocation indication information by using a system information block; or, by using a non-access stratum NAS message, to carry the resource allocation indication information.
  • the paging information resource allocation indication information sent by the network node 10 includes a plurality of first information and a plurality of second information for different coverage enhancement levels, respectively.
  • the network power saving 10 further includes a storage module 16 for storing information to be transmitted, such as information related to resource allocation of a paging message, size of a physical resource block set, paging message, and the like. Wait.
  • FIG. 3 shows a schematic structural diagram of an MTC user equipment 20 according to an embodiment of the present invention.
  • the MTC UE 20 includes a communication module 22 and a configuration module 24.
  • the communication module 22 can be configured to receive resource allocation indication information for the paging message from the network node.
  • the resource allocation indication information includes first information indicating a location of a start resource block that allocates a resource block set for transmitting a paging message to an MTC user equipment (eg, For example, the above start index) and second information indicating the number of consecutively allocated resource blocks included in the resource block set (for example, the above numberofprb).
  • the resource allocation indication information is carried by a system information block or a non-access stratum NAS message.
  • the resource allocation indication information includes a plurality of first information and a plurality of second information respectively for different coverage enhancement levels.
  • the configuration module 24 can be configured to: apply the received resource allocation indication information.
  • the configuration module 24 is further configured to set a lifetime for the received resource allocation indication information.
  • the configuration module may be further configured to maintain valid resource allocation indication information when the radio resource control connection RCC CONNECT state and/or the radio resource control idle RRC IDLE state.
  • the communication module 22 is further configured to receive a paging message. Specifically, the communication module 22 is further configured to: receive a paging message according to the start position of the paging message determined in the frequency domain and the number of occupied physical resource blocks according to the applied resource allocation indication information.
  • the MTC UE 20 further includes a storage module 26 for storing received information, such as resource allocation indication information for paging messages, system information, paging messages, and the like.
  • the network node 10 and the MTC user equipment 20 may perform the paging message frequency domain resource allocation method for the MTC system as described above with reference to FIG. 1, and the functions and operations thereof will not be described herein.
  • the method and apparatus of the present invention have been described above in connection with the preferred embodiments. Those skilled in the art will appreciate that the methods shown above are merely exemplary. The method of the present invention is not limited to the steps and sequences shown above.
  • the network nodes and user equipment shown above may include more modules, for example, may also include modules that may be developed or developed in the future for base stations, MMEs, or UEs, and the like.
  • the various logos shown above are merely exemplary and not limiting, and the invention is not limited to specific cells as examples of such identifications. Many variations and modifications can be made by those skilled in the art in light of the teachings of the illustrated embodiments.
  • the configuration parameter related to the paging message can be notified to the MTC user equipment by using the embodiment of the present invention, so that the user equipment can obtain the paging message.
  • the embodiment of the present invention transmits the frequency domain resource allocation for the paging message for the MTC user equipment, for example, in the system information block or the NAS message, so that the MTC user equipment does not have the corresponding physical downlink control channel.
  • the location of the paging message in the frequency domain can be determined so that the paging message can be correctly obtained.
  • the above-described embodiments of the present invention can be implemented by software, hardware, or a combination of both software and hardware.
  • the base station and various components within the user equipment in the above embodiments may be implemented by various devices including, but not limited to, analog circuit devices, digital circuit devices, digital signal processing (DSP) circuits, and programmable processing. , Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs), Programmable Logic Devices (CPLDs), and more.
  • ASICs Application Specific Integrated Circuits
  • FPGAs Field Programmable Gate Arrays
  • CPLDs Programmable Logic Devices
  • base station refers to a mobile communication data and control switching center having a large transmission power and a relatively large coverage area, including resource allocation scheduling, data reception and transmission, and the like.
  • User equipment refers to a user mobile terminal, for example, a terminal device including a mobile phone, a notebook, etc., which can perform wireless communication with a base station or a micro base station.
  • Mobility Management Entity refers to an entity in the core network that has the ability to manage the mobility of users.
  • embodiments of the invention disclosed herein may be implemented on a computer program product.
  • the computer program product is a product having a computer readable medium encoded with computer program logic that, when executed on a computing device, provides related operations to implement The above technical solution of the present invention.
  • the computer program logic When executed on at least one processor of a computing system, the computer program logic causes the processor to perform the operations (methods) described in the embodiments of the present invention.
  • Such an arrangement of the present invention is typically provided as software, code and/or other data structures, or such as one or more, that are arranged or encoded on a computer readable medium such as an optical medium (e.g., CD-ROM), floppy disk, or hard disk.
  • Software or firmware or such a configuration may be installed on the computing device such that one or more processors in the computing device perform the technical solutions described in the embodiments of the present invention.

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Abstract

本发明提供了一种针对MTC用户设备的寻呼消息的频域资源分配方法以及相应的网络节点和用户设备。根据本发明实施例的方法包括：分配用于向MTC用户设备发送寻呼消息的资源块集合；以及，向MTC用户设备发送资源分配指示信息，所述资源分配指示信息包括指示所述资源块集合的起始资源块的位置的第一信息以及指示所述资源块集合包括的连续分配的资源块的数目的第二信息。通过本发明实施例，用户设备能够确定寻呼消息在频域上的位置以便读取寻呼消息。

Description

针对寻呼消息的资源分配方法及网络节点和用户设备 技术领域
本发明涉及无线通信技术领域。更具体地，本发明涉及针对机器间通信(MTC)寻呼消息的资源分配方法以及相应的网络节点和用户设备。
背景技术
第三代移动通信合作计划组织(3GPP)部署的长期演进项目(LTE)旨在提供日益多样化的未来移动通信服务，无线蜂窝通信日益成为大众生活和工作中不可或缺的一部分。在3GPP LTE的第一版(即Release 8)中，引入了正交频分多帅(OFDMA)和多天线(MIMO)技术。3GPP的Release 10版本经国际电信联盟的评估和测试，正式成为了第四代全球移动通信标准LTE-Advanced。在LTE-Advanced标准中，引入了载波聚合(CA)和中继技术，增强了上行/下行MIMO技术，同时支持异构网络(HetNet)的部署。
为了满足未来家庭设备通信的市场需求和规模庞大的物联网(IOT)部署，3GPP决定在LTE及其升级版本中引入低成本机器间通信技术(MTC：Machine Type Communication)，将MTC服务由目前的GSM网络支持迁移至LTE网络支持，并定义了若干种新的LTE用户设备(UE：User Equipment)的类型，其一称之为低成本MTC用户设备(Low-cost MTC UE)，这种MTC用户设备在现有LTE网络的所有双工模式中支持MTC服务，并具有这样的性能：1)单接收天线；2)下行和上行最大的传输模块大小(TBS：Transport Block Size)为1000比特；3a)下行链路数据信道的基带带宽降低为1.4MHz，下行链路控制信道的带宽与网络侧系统带宽保持一致，上行链路信道带宽以及下行链路的射频部分与现有LTE网络中的用户设备保持一致；3b)下行/上行链路控制信道和数据信道的基带带宽降低为1.4MHz。
MTC是一种不需要人为参与的数据通信服务。大规模的MTC用户设备部署，可以用于安全、跟踪、付账、测量以及消费电子等领域，具体涉及的应用包括视频监控、供货链跟踪、智能电表，远程监控等。 MTC用户设备要求较低的功率消耗，支持较低的数据传输速率和较低的移动性。目前LTE系统主要是针对人与人(H2H)的通信服务。因此，实现MTC服务的规模竞争优势及应用前景的关键环节在于LTE网络支持低成本MTC设备。
一些MTC用户设备需要安装在居民楼地下室或者由绝缘箔片、金属护窗或者传统建筑物的厚墙保护的位置，相比较LTE网络中的常规设备终端(如手机，平板电脑等)，这些设备的空中接口将明显遭受更严重的穿透损失。3GPP决定研究LTE网络向MTC用户设备提供附加20dB/15dB覆盖增强服务的方案设计与性能评估。值得注意的是，位于糟糕网络覆盖区域的MTC用户设备具有这样的特点：非常低的数据传输速率，非常宽松的延时要求，以及有限的移动性。针对MTC用户设备的这种特点，LTE网络可以进一步优化一些信令和/或信道用以支持MTC用户设备。3GPP要求为新定义的MTC用户设备以及其他运行MTC服务(如，非常宽松的延迟要求)的用户设备提供一定的LTE网络覆盖增强，其中，例如对于LTE频分双工(FDD)网络提供15dB的网络覆盖增强。另外，并不是所有的运用MTC服务的用户设备都需要相同的网络覆盖增强。
在2014年6月举行的3GPP RAN#64次全会上，提出了一个新的面向Rel-13的低复杂性和覆盖增强的MTC的工作项目(参见非专利文献：RP-140990 New Work Item on Even Lower Complexity and Enhanced Coverage LTE UE for MTC，Ericsson，NSN)。在该工作项目的描述中，LTE Rel-13系统需要支持上下行1.4MHz射频带宽的MTC用户设备(以下称为窄带MTC UE)工作在任意的系统带宽(例如1.4MHz、3MHz、5MHz、10MHz、15MHz、20MHz等等)下，并且为该类MTC用户提供覆盖增强功能。在系统设计时，低成本MTC用户和覆盖增强MTC用户要采用统一的设计方案。降低MTC用户设备的能耗是该工作项目的主要目标之一。
针对3GPP LTE用户设备运行MTC业务并处于覆盖增强模式下，物理层信道如(E)PDCCH/PDSCH/PUCCH/PUSCH的覆盖增强设计与配置是一个需要标准化的工作。根据3GPP RAN1#74会议的讨论，在完成初始接入之后，对于任何一个需要重复传输的物理信道而言， 其配置模式取决于基站端。而MTC用户设备合并解调大量重复数据会引入2至10秒的延迟。这样的延迟会增加MTC用户设备的耗电量。根据3GPP RAN1#74b会议的决定，对于需要覆盖增强的MTC用户设备，数据信道的传输应在控制信道传输完成之后。因此为了减少用户设备的耗电量，针对需要覆盖增强的MTC用户设备的寻呼消息传输可以不需要物理下行控制信道。同时由于低复杂度MTC用户设备(Low complexity MTC UE)与覆盖增强MTC用户设备具有相似的信息传输机制，因此需要设计一种同时适用于覆盖增强MTC用户设备和/或低复杂度或低成本的MTC用户设备的寻呼消息传输机制，即需要设计一种在没有相应的物理下行控制信道的情况下传输寻呼消息的机制。因此，针对MTC用户设备的寻呼信息在频域上的资源分配方式需要重新设计。
发明内容
本发明旨在提供一种同时适用于例如覆盖增强MTC用户设备和/或低复杂度或低成本的MTC用户设备的寻呼消息的频域资源分配机制以及执行所述机制的网络节点和用户设备。
根据本发明的第一方面，提供了一种由网络节点执行的针对寻呼消息的频域资源分配的方法，包括：分配用于向MTC用户设备发送寻呼消息的资源块集合；以及，向MTC用户设备发送资源分配指示信息，所述资源分配指示信息包括指示所述资源块集合的起始资源块的位置的第一信息以及指示所述资源块集合包括的连续分配的资源块的数目的第二信息。
根据本发明的第二方面，提供了一种由机器间通信MTC用户设备接收针对寻呼消息的频域资源分配的方法，包括：从网络节点接收针对寻呼消息的资源分配指示信息，所述资源分配指示信息包括指示分配用于向MTC用户设备发送寻呼消息的资源块集合的起始资源块的位置的第一信息以及指示所述资源块集合包括的连续分配的资源块的数目的第二信息；以及，应用所接收的资源分配指示信息。
根据本发明的第三方面，提供了一种在支持MTC的无线电信系 统中的网络节点，包括：分配模块，配置为：分配用于向MTC用户设备发送寻呼消息的资源块集合；以及，通信模块，配置为：向MTC用户设备发送资源分配指示信息，所述资源分配指示信息包括指示所述资源块集合的起始资源块的位置的第一信息以及指示所述资源块集合包括的连续分配的资源块的数目的第二信息。
根据本发明的第四方面，提供了一种机器间通信MTC用户设备，包括：通信模块，配置为：从网络节点接收针对寻呼消息的资源分配指示信息，所述资源分配指示信息包括指示分配用于向MTC用户设备发送寻呼消息的资源块集合的起始资源块的位置的第一信息以及指示所述资源块集合包括的连续分配的资源块的数目的第二信息；以及，配置模块，配置为：应用所接收的资源分配指示信息。
在本发明的一些实施例中，所述网络节点可以是基站或移动管理实体(MME)。
在本发明的一些实施例中，可以通过系统信息块来承载所述资源分配指示信息，或者，通过非接入层(NAS)消息来承载所述资源分配指示信息。
在本发明的一些实施例中，针对不同覆盖增强等级的MTC用户设备的寻呼消息可被分配不同频域资源(也即，资源块集合)。相应地，所述资源分配指示信息可以包含分别针对不同覆盖增强等级的多个所述第一信息和多个所述第二信息。
在本发明的一些实施例中，可以在MTC用户设备中针对所接收的资源分配指示信息设置生存期限。如果MTC用户设备中应用的资源分配指示信息超过生命期限，则可以删除该资源分配指示信息。
在本发明的一些实施例中，MTC用户设备在无线资源控制连接(RCC CONNECT)状态和/或无线资源控制空闲(RRC IDLE)状态下时，需要维护有效的资源分配指示信息。
在本发明的一些实施例中，当MTC用户设备需要获取寻呼消息时，该MTC用户设备需要根据所应用的(即有效的)资源分配指示信息确定寻呼消息在频域上的开始位置，以及确定寻呼消息在频域上所占的物理资源块的数目。
附图说明
通过下文结合附图的详细描述，本发明的上述和其它特征将会变得更加明显，其中：
图1示出了可在MTC通信系统中实现的根据本发明实施例的寻呼消息频域资源分配方法的流程图；
图2示出了根据本发明实施例的网络节点的结构示意图；
图3示出了根据本发明实施例的MTC用户设备的结构示意图；
图4示出了承载不同等级的寻呼消息的资源块集合的示意图。
具体实施方式
以下将结合附图和具体实施例，对本发明所提出的适用于需要额外覆盖增强或者低复杂度/低成本MTC用户设备以及其他支持延迟容忍的MTC服务并需要一定覆盖增强的用户设备的寻呼消息的频域资源分配方法以及执行所述方法的网络节点和MTC用户设备(UE)进行详细阐述。应当注意，本发明不应局限于下文所述的具体实施例。另外，为了简便起见，省略了对与本发明没有直接关联的公知技术的详细描述，以防止对本发明的理解造成混淆。
下文以LTE移动通信系统及其后续的演进版本作为示例应用环境，具体描述了根据本发明的多个实施例。然而，需要指出的是，本发明不限于以下实施例，而是可适用于更多其它的无线通信系统，例如今后的5G蜂窝通信系统。在下文中，除非另有明示，所提及的通信系统、网络节点和用户设备均指代支持MTC的通信系统、网络节点和用户设备。
在现有的LTE系统中，SystemInformationBlockType2消息包含一个pcch-Config信元(IE：information element)，其用于配置用户在时域上接收寻呼消息的寻呼帧(PF：Paging Frame)及寻呼机会(PO：Paging Occasion)。如上文所述，针对覆盖增强MTC用户设备和/或低复杂度或低成本的MTC用户设备，寻呼消息对应的物理下行控制信道不传输，因此需要将如何在频域上承载寻呼消息的配置参数(如寻呼消息的频域资源分配参数)发送给用户。考虑到MTC用户设备 在RRC IDLE状态下也需要接收寻呼消息，因此本发明实施例提出相应的寻呼消息配置参数应放在系统信息(system information)或非接入层(NAS：Non Access Stratum)消息中。
发明人认识到：在一个子帧中确定一条寻呼消息所映射到的物理资源块，至少需要确定两个参数，如承载寻呼消息的资源块集合的起始位置(例如，起始资源块的位置)及资源块集合的大小(例如，连续分配的资源块数目)。图4示出了承载不同等级的寻呼消息的资源块集合的示例，其中具体示出了各个资源块集合的大小和起始位置与寻呼消息等级之间的关系。此处寻呼消息的等级指的是寻呼消息映射到物理信道后的重复等级，不同等级的寻呼消息针对不同的覆盖增强等级。
鉴于上述考虑，本发明实施例提出，在寻呼消息对应的物理下行控制信道不传输的请况下，针对MTC用户设备的寻呼消息在频域上的位置可以通过指示用于承载寻呼消息的资源块集合的起始位置的信息和指示该资源块集合的数目的信息来给出。下面参考图1进行详细描述。
图1示出了可在MTC通信系统中实现的根据本发明实施例的针对寻呼消息的频域资源分配方法的流程图。该MTC通信系统可以包括一个或多个支持MTC的网络节点10以及一个或多个支持MTC的用户设备MTC UE 20。尽管图中仅示出了一个网络节点10和一个MTC UE，但是本发明在这方面不受限制。还应该理解，该MTC通信系统可以包括接入网和核心网。网络节点10可以是基站，也可以是核心网中的移动管理实体(MME)。
如图所示，在步骤S102中，网络节点10确定对寻呼资源的资源分配。具体地，网络节点10分配用于向MTC用户设备发送寻呼消息的资源块集合。
然后，在步骤S104中，向用户设备发送资源分配指示信息。所述资源分配指示信息包括指示所述资源块集合的起始资源块的位置的第一信息(例如，标为startindex)以及指示所述资源块集合包括的连续分配的资源块的数目的第二信息(例如，标为numberofprb)。
优选地，所述资源分配指示信息包含分别针对不同覆盖增强等级 的多个所述第一信息和多个所述第二信息。换言之，所述资源分配指示信息包含针对不同覆盖增强等级的多种寻呼信息频域资源分配。
在步骤S202中，MTC UE 20接收到来自网络节点的所述资源分配指示信息。
于是，在步骤S204中，MTC UE 20可以应用所接收的资源分配指示信息。例如，所接收的资源分配指示信息可被应用于与获取寻呼消息相关的配置参数。
考虑到在当前的系统中，寻呼控制信道(PCCH：Paging Control Channel)的配置信息包含在系统信息，因此本发明的一些实施例提出寻呼消息相关的配置参数可被包含在系统信息里。在这种情况下，图1中的网络节点10可以是基站。在步骤S102中，可以通过基站向用户设备广播的系统信息块来承载所述资源分配指示信息。
另外，考虑到寻呼消息是由网络侧发起的，因此本发明的另一些实施例提出寻呼消息相关的配置参数也可被包含在非接入层(NAS)消息里。在这种情况下，图1中的网络节点10可以是核心网中的移动管理实体。在步骤S102中，可以通过NAS消息来承载所述资源分配指示信息。应该理解，NAS消息中的所述资源分配指示信息对于基站是透明传输的。在基站侧不需要解读所述资源分配指示信息。
下面针对这两种情况进行具体描述。
A.在系统信息中包含寻呼消息相关参数
对需要额外覆盖增强或者低复杂度/低成本的MTC用户设备而言，新的系统信息将会引入。作为示例，在本发明中，针对MTC用户设备的系统信息可以称为SI_MTC，或称为SystemInformationBlock18。该系统信息块中至少包含有与MTC用户设备寻呼消息配置相关的信元。例如，可以在SystemInformationBlock18中引入两个信元numberofprb和startindex，其中numberofprb用于指示连续分配的资源块数目，startindex用于指示起始资源块的位置。若SI_MTC被分割成多个系统信息块，则numberofprb信元和startindex信元可被包含在这些系统信息块的某一个中，例如numberofprb信元和startindex信元可被包含在针对MTC用户设备的第一个系统信息块中。
numberofprb信元的值可以是一组一一对应的取值范围限定的整数(如取值范围为1～6)。例如L0指代的是覆盖增强等级0，即不需要覆盖增强的用户设备，与之对应的信元的取值是一个限定范围的整数(如1～6)；L1指代的是覆盖增强等级1，即需要覆盖增强(例如1～5dB增强)的用户设备，与之对应的信元的取值是一个限定范围的整数(如1～6)；L2指代的是覆盖增强等级2，即需要覆盖增强(例如6～10dB增强)的用户设备，与之对应的信元的取值是一个限定范围的整数(如1～6)；L3指代的是覆盖增强等级3，即需要覆盖增强(例如11～15dB增强)的用户设备，与之对应的信元的取值是一个限定范围的整数(如1～6)。此处，用户设备需要覆盖增强意味着用户设备接收的物理信道需要覆盖增强，而物理信道的覆盖增强主要依靠两种方式实现：PBCH/EPDCCH/PUCCH/PRACH等控制信道重复(repetition)传输；或者PDSCH/PUSCH等数据信道子帧绑定(subframe bundling)传输。
startindex信元的值可以是一组一一对应的取值范围限定的整数(如取值范围为0～5)。例如，参考下面的表1，L0指代的是覆盖增强等级0，即不需要覆盖增强的用户设备，与之对应的信元的取值是一个限定范围的整数(如0～5)；L1指代的是覆盖增强等级1，即需要覆盖增强(例如1～5dB增强)的用户设备，与之对应的信元的取值是一个限定范围的整数(如0～5)；L2指代的是覆盖增强等级2，即需要覆盖增强(例如6～10dB增强)的用户设备，与之对应的信元的取值是一个限定范围的整数(如0～5)；L3指代的是覆盖增强等级3，即需要覆盖增强(例如11～15dB增强)的用户设备，与之对应的信元的取值是一个限定范围的整数(如0～5)。此处，用户设备需要覆盖增强意味着用户设备接收的物理信道需要覆盖增强，而物理信道的覆盖增强主要依靠两种方式实现：PBCH/EPDCCH/PUCCH/PRACH等控制信道重复(repetition)传输；或者PDSCH/PUSCH等数据信道子帧绑定(subframe bundling)传输。
本发明实施例提出，可以定义一个与现有的PCCH-Config类似但包括numberofprb信元和startindex信元的信元(例如称为PCCH-Config-r13)来作为本发明提出的针对MTC用户设备寻呼消息 的资源分配指示信息。关于PCCH-Config的详情可以参见3GPP TS 36.331 v12.3.0“3rd Generation Partnership Project；Technical Specification Group Radio Access Network；Evolved Universal Terrestrial Radio Access(E-UTRA)；Radio Resource Control(RRC)；Protocol specification”的Section 6.3.2radioResourceConfigCommon information element。
PCCH-Config-r13的格式可以如下表1所示(其中用粗体示与现有PCCH-Config的区别)。
Figure PCTCN2015099197-appb-000001
表1
信元PCCH-Config-r13用于配置需要额外覆盖增强或者低复杂度/低成本MTC用户设备的寻呼控制信道相应的参数。可以修改3GPP TS 36.331 v12.3.0的Section 6.3.2中定义的信元radioResourceConfigCommonSIB信元，以包含该PCCH-Config-r13。修改后的radioResourceConfigCommonSIB信元可以如下表2所示(其中用粗体示出修改)。
Figure PCTCN2015099197-appb-000002
Figure PCTCN2015099197-appb-000003
表2
修改后的包含信元PCCH-Config-r13的信元radioResourceConfigCommonSIB可被包含在针对需要额外覆盖增强或者低复杂度/低成本MTC用户设备的系统信息中，例如可以包含在SystemInformationBlock20中。
MTC用户设备在处于RRC_IDLE状态下，或者在处于RRC_CONNECTED状态下，或者在退出节电模式(PSM：Power Saving Mode)状态时，都需要确保其所需的系统信息(例如称为SI_MTC或SystemInformationBlockType20)有一个有效版本存在。在用户设备中，可以针对所接收的系统信息(或具体地，其中包含的针对寻呼消息的资源分配指示信息)设置生存期限(例如3小时)。如果用户设备中保存的系统信息有效时间达到生命期限，则删除该系统信息，除非另有说明。如果唯一的有效版本被删除，则需要重新读取系统信息。
MTC用户设备在接收到所需的系统信息(如SystemInformationBlockType20)后，用户设备需要应用包含在radioResourceConfigCommonSIB中的配置信息。
当用户设备需要获取寻呼消息时，在频域资源上用户设备需要：
1＞通过SystemInformationBlockType20中的startindex信元确定寻 呼消息在频域上的开始位置。
2＞通过SystemInformationBlockType20中的numberofprb信元确定寻呼消息在频域上所占的物理资源块数目。
B.在非接入层信息中包含寻呼消息相关参数
对需要额外覆盖增强或者低复杂度/低成本MTC用户设备而言，新的非接入层(Non-Access Stratum，NAS)信息将会引入。在本发明中，针对MTC用户设备的非接入层信息可以称为NAS_MTC消息。该NAS_MTC消息中至少包含有MTC用户设备寻呼消息配置的相关信元。例如可以在NAS_MTC消息中引入两个信元numberofprb和startindex，其中numberofprb用于指示连续分配的资源块数目，startindex用于指示资源块的起始位置。
本发明的一些实施例提出，可以定义一个与现有的下行NAS传输(Downlink NAS Transport)类似但包括numberofprb信元和startindex信元的信元(例如称为下行MTC非接入层传输消息，或称为Downlink MTC NAS Transport)来作为本发明提出的针对MTC用户设备寻呼消息的资源分配指示信息。Downlink NAS Transport消息可以参考现有TS 24.301Non-Access-Stratum(NAS)protocol for Evolved Packet System(EPS)的section 8.2.12中定义的Downlink NAS Transport。
具体地，Downlink MTC NAS Transport下行MTC非接入层消息的格式可以如下表3所示。
消息类型：下行MTC非接入层传输消息
含义：双重的(即，对网络侧和用户设备是相同的)。
方向：网络——＞用户设备
(其中用粗体示出修改)
Figure PCTCN2015099197-appb-000004
表3
如表3所示，Downlink MTC NAS Transport消息包含四个信元，即协议鉴别(Protocol discriminator)信元、安全头类型(Security header type)信元、下行非接入层传输消息标志(Downlink MTC NAS transport message identity)信元、MTC非接入层消息承载(MTC NAS message container)信元。
其中第一个8位字节的前四位是协议鉴别信元，此处可取值0010。协议鉴别信元格式具体可见TS 24.007中的section 11.2.3.1。
其中第一个8位字节的后四位是安全头类型信元，具体取值可见TS 24.301中的section 9.3.1Security header type。
其中第二个8位字节是下行非接入层传输消息标志信元，可以修改TS 24.301中的section 9.8.1Message type信元，以包含下行非接入层传输消息标识信元。修改后的信元可取值01101010。
其中关于MTC非接入层消息承载信元，可以修改TS 24.301中的section 9.9.3.22NAS message container信元，以包含MTC非接入层消息承载信元。MTC非接入层消息承载信元的格式可以如表4所示，其中numberofprb信元和startindex信元被包含在表4中的MTC非接入层消息承载信元内容中。
Figure PCTCN2015099197-appb-000005
表4 MTC非接入层消息承载信元
如上所述，在Downlink MTC NAS Transport消息中将包括两个信元numberofprb和startindex。
当用户设备需要获取寻呼消息时，在频域资源上用户设备需要：
1＞通过下行非接入层消息内的NAS-MTC-PDU中的startindex信元确定寻呼消息在频域上的开始位置。
2＞通过下行非接入层消息内的NAS-MTC-PDU中的numberofprb信元确定寻呼消息在频域上所占的物理资源块数目。
图2示出了根据本发明实施例的网络节点10的结构示意图。在一些实施例中，网络节点10是基站。而在另一些实施例中，网络节点10可以是核心网中的移动管理实体。
如图2所示，网络节电10可以包括分配模块12和通信模块14。
分配模块12可以配置为：分配用于向MTC用户设备发送寻呼消息的资源块集合。
通信模块14可以配置为：向MTC用户设备发送资源分配指示信息。所述资源分配指示信息包括指示所述资源块集合的起始资源块的位置的第一信息(例如，上述startindex)以及指示所述资源块集合包括的连续分配的资源块的数目的第二信息(例如，上述numberofprb)。
在一些实施例中，通信模块14进一步配置为：通过系统信息块来承载所述资源分配指示信息；或者，通过非接入层NAS消息来承载所述资源分配指示信息。
在一些实施例中，网络节点10发送的寻呼信息资源分配指示信息包含分别针对不同覆盖增强等级的多个第一信息和多个第二信息。
在本发明的一些实施例中，网络节电10还包括存储模块16，用于存储要发送的信息，例如与寻呼消息的资源分配有关的信息、物理资源块集的大小、寻呼消息等等。
图3示出了根据本发明实施例的MTC用户设备20的结构示意图。如图3所示，MTC UE 20包括通信模块22和配置模块24。
通信模块22可以配置为：从网络节点接收针对寻呼消息的资源分配指示信息。所述资源分配指示信息包括指示分配用于向MTC用户设备发送寻呼消息的资源块集合的起始资源块的位置的第一信息(例 如，上述startindex)以及指示所述资源块集合包括的连续分配的资源块的数目的第二信息(例如，上述numberofprb)。
可选地，所述资源分配指示信息是通过系统信息块或非接入层NAS消息来承载的。
优选地，所述资源分配指示信息包括分别针对不同覆盖增强等级的多个第一信息和多个第二信息。
配置模块24可以配置为：应用所接收的资源分配指示信息。
优选地，配置模块24还配置为：针对所接收的资源分配指示信息设置生存期限。
所述配置模块还可以配置为：在无线资源控制连接RCC CONNECT状态和/或无线资源控制空闲RRC IDLE状态下时，维护有效的资源分配指示信息。
在一些实施例中，通信模块22还用于接收寻呼消息。具体地，通信模块22还配置为：根据所应用的资源分配指示信息确定的寻呼消息在频域上的开始位置以及所占的物理资源块的数目，接收寻呼消息。
在本发明的一些实施例中，MTC UE 20还包括存储模块26，用于存储接收的信息，例如针对寻呼消息的资源分配指示信息、系统信息、寻呼消息等等。
网络节点10和MTC用户设备20可以执行上文参考图1已经描述的用于MTC系统的寻呼消息频域资源分配方法，在此不再对其功能和操作进行赘述。
上文已经结合优选实施例对本发明的方法和涉及的设备进行了描述。本领域技术人员可以理解，上面示出的方法仅是示例性的。本发明的方法并不局限于上面示出的步骤和顺序。上面示出的网络节点和用户设备可以包括更多的模块，例如还可以包括可以开发的或者将来开发的可用于基站、MME、或UE的模块等等。上文中示出的各种标识仅是示例性的而不是限制性的，本发明并不局限于作为这些标识的示例的具体信元。本领域技术人员根据所示实施例的教导可以进行许多变化和修改。
通过本发明实施例可以向MTC用户设备通知与寻呼消息有关的配置参数，使得用户设备能够获取寻呼消息。优选地，本发明实施例通过例如在系统信息块或者NAS消息中发送用于针对MTC用户设备的寻呼消息的频域资源分配，使得在没有对应的物理下行控制信道的情况下MTC用户设备也能够确定寻呼消息在频域上的位置，从而能够正确获取寻呼消息。
应该理解，本发明的上述实施例可以通过软件、硬件或者软件和硬件两者的结合来实现。例如，上述实施例中的基站和用户设备内部的各种组件可以通过多种器件来实现，这些器件包括但不限于：模拟电路器件、数字电路器件、数字信号处理(DSP)电路、可编程处理器、专用集成电路(ASIC)、现场可编程门阵列(FPGA)、可编程逻辑器件(CPLD)，等等。
在本申请中，“基站”是指具有较大发射功率和较广覆盖面积的移动通信数据和控制交换中心，包括资源分配调度、数据接收发送等功能。“用户设备”是指用户移动终端，例如包括移动电话、笔记本等可以与基站或者微基站进行无线通信的终端设备。“移动管理实体”是指核心网中具有管理用户的移动性的能力的实体。
此外，这里所公开的本发明的实施例可以在计算机程序产品上实现。更具体地，该计算机程序产品是如下的一种产品：具有计算机可读介质，计算机可读介质上编码有计算机程序逻辑，当在计算设备上执行时，该计算机程序逻辑提供相关的操作以实现本发明的上述技术方案。当在计算系统的至少一个处理器上执行时，计算机程序逻辑使得处理器执行本发明实施例所述的操作(方法)。本发明的这种设置典型地提供为设置或编码在例如光介质(例如CD-ROM)、软盘或硬盘等的计算机可读介质上的软件、代码和/或其他数据结构、或者诸如一个或多个ROM或RAM或PROM芯片上的固件或微代码的其他介质、或一个或多个模块中的可下载的软件图像、共享数据库等。软件或固件或这种配置可安装在计算设备上，以使得计算设备中的一个或多个处理器执行本发明实施例所描述的技术方案。
尽管以上已经结合本发明的优选实施例示出了本发明，但是本领域的技术人员将会理解，在不脱离本发明的精神和范围的情况下，可以对 本发明进行各种修改、替换和改变。因此，本发明不应由上述实施例来限定，而应由所附权利要求及其等价物来限定。

Claims (22)

  1. 一种由网络节点执行的针对寻呼消息的频域资源分配的方法，包括：
    分配用于向机器间通信MTC用户设备发送寻呼消息的资源块集合；以及
    向MTC用户设备发送资源分配指示信息，所述资源分配指示信息包括指示所述资源块集合的起始资源块的位置的第一信息以及指示所述资源块集合包括的连续分配的资源块的数目的第二信息。
  2. 根据权利要求1所述的方法，其中，所述网络节点是基站或移动管理实体MME。
  3. 根据权利要求1所述的方法，其中，向MTC用户设备发送资源分配指示信息包括：
    通过系统信息块来承载所述资源分配指示信息；或者
    通过非接入层NAS消息来承载所述资源分配指示信息。
  4. 根据权利要求1-3中任一项所述的方法，其中，所述资源分配指示信息包含分别针对不同覆盖增强等级的多个所述第一信息和多个所述第二信息。
  5. 一种由机器间通信MTC用户设备接收针对寻呼消息的频域资源分配的方法，包括：
    从网络节点接收针对寻呼消息的资源分配指示信息，所述资源分配指示信息包括指示分配用于向MTC用户设备发送寻呼消息的资源块集合的起始资源块的位置的第一信息以及指示所述资源块集合包括的连续分配的资源块的数目的第二信息；以及
    应用所接收的资源分配指示信息。
  6. 根据权利要求5所述的方法，其中，所述网络节点是基站或移动管理实体MME。
  7. 根据权利要求5所述的方法，其中，所述资源分配指示信息是通过系统信息块或非接入层NAS消息来承载的。
  8. 根据权利要求5-7中任一项所述的方法，其中，所述资源分 配指示信息包括分别针对不同覆盖增强等级的多个所述第一信息和多个所述第二信息。
  9. 根据权利要求5所述的方法，还包括：针对所接收的资源分配指示信息设置生存期限。
  10. 根据权利要求5所述的方法，还包括：在RCC CONNECT状态和/或RRC IDLE状态下维护有效的资源分配指示信息。
  11. 根据权利要求5所述的方法，还包括：根据所应用的资源分配指示信息确定寻呼消息在频域上的开始位置以及所占的物理资源块的数目，以便接收寻呼消息。
  12. 一种在支持机器间通信MTC的无线电信系统中的网络节点，包括：
    分配模块，配置为：分配用于向MTC用户设备发送寻呼消息的资源块集合；以及
    通信模块，配置为：向MTC用户设备发送资源分配指示信息，所述资源分配指示信息包括指示所述资源块集合的起始资源块的位置的第一信息以及指示所述资源块集合包括的连续分配的资源块的数目的第二信息。
  13. 根据权利要求12所述的网络节点，其中，所述网络节点是基站或移动管理实体MME。
  14. 根据权利要求12所述的网络节点，其中，所述通信模块进一步配置为：
    通过系统信息块来承载所述资源分配指示信息；或者
    通过非接入层NAS消息来承载所述资源分配指示信息。
  15. 根据权利要求12-14中任一项所述的网络节点，其中，所述资源分配指示信息包含分别针对不同覆盖增强等级的多个所述第一信息和多个所述第二信息。
  16. 一种机器间通信MTC用户设备，包括：
    通信模块，配置为：从网络节点接收针对寻呼消息的资源分配指示信息，所述资源分配指示信息包括指示分配用于向MTC用户设备发送寻呼消息的资源块集合的起始资源块的位置的第一信息以及指示 所述资源块集合包括的连续分配的资源块的数目的第二信息；以及
    配置模块，配置为：应用所接收的资源分配指示信息。
  17. 根据权利要求16所述的MTC用户设备，其中，所述网络节点是基站或移动管理实体MME。
  18. 根据权利要求16所述的MTC用户设备，其中，所述资源分配指示信息是通过系统信息块或非接入层NAS消息来承载的。
  19. 根据权利要求16-18中任一项所述的MTC用户设备，其中，所述资源分配指示信息包括分别针对不同覆盖增强等级的多个所述第一信息和多个所述第二信息。
  20. 根据权利要求16所述的MTC用户设备，其中所述配置模块还配置为：针对所接收的资源分配指示信息设置生存期限。
  21. 根据权利要求16所述的MTC用户设备，所述配置模块还配置为：在无线资源控制连接RCC CONNECT状态和/或无线资源控制空闲RRC IDLE状态下时，维护有效的资源分配指示信息。
  22. 根据权利要求16所述的MTC用户设备，所述通信模块还配置为：根据所应用的资源分配指示信息确定的寻呼消息在频域上的开始位置以及所占的物理资源块的数目，接收寻呼消息。
PCT/CN2015/099197 2014-12-30 2015-12-28 针对寻呼消息的资源分配方法及网络节点和用户设备 WO2016107520A1 (zh)

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