WO2013170781A1 - Procédé, dispositif et système permettant de transmettre des informations de recherche de terminal - Google Patents

Procédé, dispositif et système permettant de transmettre des informations de recherche de terminal Download PDF

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Publication number
WO2013170781A1
WO2013170781A1 PCT/CN2013/075819 CN2013075819W WO2013170781A1 WO 2013170781 A1 WO2013170781 A1 WO 2013170781A1 CN 2013075819 W CN2013075819 W CN 2013075819W WO 2013170781 A1 WO2013170781 A1 WO 2013170781A1
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Prior art keywords
paging
enhanced
channel
information
paging channel
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PCT/CN2013/075819
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English (en)
Chinese (zh)
Inventor
秦飞
周海军
鲍炜
高秋彬
毕海
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电信科学技术研究院
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Publication of WO2013170781A1 publication Critical patent/WO2013170781A1/fr

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Classifications

    • 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

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a method, device, and system for transmitting paging information. Background technique
  • the process of receiving user information (User Equipment, UE) to receive paging information and connect to the service is as follows:
  • the UE After the UE is powered on, the UE first needs to perform a cell initial search process to obtain a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS); and then pass a downlink cell-specific pilot signal (Cell-specific). Reference signals, CRS) Port 0 and Physical Broadcast Channel (PBCH), obtain accurate synchronization, and obtain the cell master information block; then further read other System Information Block (SIB) information to obtain the network More content; The UE selects a resident network according to needs, and obtains a Temporary Mobile Subscriber Identity (TMSI) according to its International Mobile Subscriber Identity (IMSI).
  • PSS Primary Synchronization Signal
  • SSS Secondary Synchronization Signal
  • Cell-specific downlink cell-specific pilot signal
  • Reference signals, CRS CRS Port 0 and Physical Broadcast Channel (PBCH)
  • SIB System Information Block
  • the UE selects a resident network according to needs, and obtains a Temporary Mobile Subscriber Identity (TM
  • the system When there is a calling UE paging the called UE in the system, the system will instruct the wireless network base station to initiate a paging message to the called UE through the core network, where the paging message includes the TMSI of the called UE.
  • the radio network base station generally uses a public radio network temporary identifier (P-RNTI) to indicate the physical downlink of the called UE at a specified time-frequency resource location through a Physical Downlink Control Channel (PDCCH).
  • P-RNTI public radio network temporary identifier
  • the paging information is read on the PDSCH (Physical Downlink Shared Channel, ).
  • All the UEs in the cell receive the P-RNTI scrambled scheduling signaling at the paging time corresponding to the paging time (the paging moments corresponding to different UEs may be different), and read the information in the PDSCH; the PDSCH to be read
  • the indicated TMSI is compared with its own TMSI. If it is consistent, it determines that it is paged and returns the paging response. If it is inconsistent, the current paging is ignored.
  • the called UE initiates a random access procedure to establish a radio bearer.
  • the network side may further send related information of the service application layer of the calling UE to the called UE, for example, a subscription number of the calling UE, a calling UE application layer account, and the like.
  • the UE In the process of paging based on the Long Term Evolution-Advanced (LTE-Advanced) system, the UE needs to be able to normally receive PSS/SSS signals, PBCH, Broadcast Control Channel (BCCH), PDCCH, PDSCH. And business access.
  • the terminal may not receive the paging message sent by the network side if the UE cannot normally read any one of the above channels of the cell in the cell.
  • the coverage of the channel for transmitting paging messages in the existing LTE/LTE-Advanced system is low, and it is easy for the terminal to receive the data transmitted by the network side when the signal is weak.
  • the embodiment of the invention provides a method, a device and a system for transmitting paging information, which are used to solve the problem that the coverage of the channel for transmitting paging information existing in the prior art is low, and the terminal is weak in the signal. Under, the problem of data transmitted on the network side cannot be received normally.
  • the embodiment of the invention provides a method for sending paging information, including:
  • the network side After receiving the paging request of the calling terminal, the network side sends the paging information through the enhanced paging channel; the network side receives the paging response returned by the called terminal;
  • the enhanced paging channel satisfies one or more of the following conditions:
  • the coding gain of the enhanced paging channel is greater than the coding gain of all channels in the system
  • the sequence autocorrelation gain of the enhanced paging channel is greater than the sequence autocorrelation gain of all channels in the system; the transmit power of the enhanced paging channel is greater than the average transmit power of the cell where the called terminal is located.
  • An embodiment of the present invention provides a method for receiving paging information, including:
  • the terminal After determining that the terminal is in an idle state, the terminal detects the enhanced paging channel;
  • the terminal is configured to send a paging response to the network side after determining that the paging information received by the enhanced paging channel is itself paged;
  • the enhanced paging channel satisfies one or more of the following conditions:
  • the coding gain of the enhanced paging channel is greater than the coding gain of all channels in the system
  • the sequence autocorrelation gain of the enhanced paging channel is greater than the sequence autocorrelation gain of all channels in the system; the transmit power of the enhanced paging channel is greater than the average transmit power of the cell where the called terminal is located.
  • the embodiment of the invention provides a core network device for sending paging information, including:
  • the indication module is configured to: after receiving the paging request of the calling terminal, indicate, by the base station of the tracking area TA where the called terminal is located, to send the paging information by using the enhanced paging channel;
  • a receiving module configured to receive a paging response returned by the called terminal
  • the enhanced paging channel satisfies one or more of the following conditions:
  • the coding gain of the enhanced paging channel is greater than the coding gain of all channels in the system
  • the sequence autocorrelation gain of the enhanced paging channel is greater than the sequence autocorrelation gain of all channels in the system; the transmit power of the enhanced paging channel is greater than the average transmit power of the cell where the called terminal is located.
  • An embodiment of the present invention provides a base station for sending paging information, including: a receiving module, configured to receive indication information sent by the core network device;
  • a sending module configured to send paging information by using an enhanced paging channel according to the indication information
  • the enhanced paging channel satisfies one or more of the following conditions:
  • the coding gain of the enhanced paging channel is greater than the coding gain of all channels in the system
  • the sequence autocorrelation gain of the enhanced paging channel is greater than the sequence autocorrelation gain of all channels in the system; the transmit power of the enhanced paging channel is greater than the average transmit power of the cell where the called terminal is located.
  • An embodiment of the present invention provides a base station for sending paging information, including:
  • a determining module configured to, after failing to send the paging information by using another paging channel other than the enhanced paging channel, determine to send the paging information by using an enhanced paging channel; or While the other paging channel sends the paging information, determining to send the paging information by using an enhanced paging channel;
  • a paging sending module configured to send the paging information by using the enhanced paging channel
  • the enhanced paging channel satisfies one or more of the following conditions:
  • the coding gain of the enhanced paging channel is greater than the coding gain of all channels in the system
  • the sequence autocorrelation gain of the enhanced paging channel is greater than the sequence autocorrelation gain of all channels in the system; the transmit power of the enhanced paging channel is greater than the average transmit power of the cell where the called terminal is located.
  • An embodiment of the present invention provides a terminal for receiving paging information, including:
  • a detecting module configured to detect an enhanced paging channel after determining that the terminal is in an idle state
  • a processing module configured to: after determining that the terminal is paged according to the paging information received through the enhanced paging channel, send a paging response to the core network device and/or the base station;
  • the enhanced paging channel satisfies one or more of the following conditions:
  • the coding gain of the enhanced paging channel is greater than the coding gain of all channels in the system
  • the sequence autocorrelation gain of the enhanced paging channel is greater than the sequence autocorrelation gain of all channels in the system; the transmit power of the enhanced paging channel is greater than the average transmit power of the cell where the called terminal is located.
  • the embodiment of the invention provides a system for transmitting paging information, including:
  • the core network device is configured to: after receiving the paging request of the calling terminal, indicate that the base station where the called terminal is located sends the paging information through the enhanced paging channel; and receives the paging response returned by the called terminal;
  • a base station configured to receive indication information sent by the core network device, and send paging information by using an enhanced paging channel according to the indication information;
  • a terminal configured to: after determining that the user is in an idle state, detecting an enhanced paging channel; and determining, according to the paging information received through the enhanced paging channel, that the user is paged, to the core network device and/or Or the base station sends a paging response; wherein the enhanced paging channel meets one or more of the following conditions:
  • the coding gain of the enhanced paging channel is greater than the coding gain of all channels in the system
  • the sequence autocorrelation gain of the enhanced paging channel is greater than the sequence autocorrelation gain of all channels in the system;
  • the transmit power of the enhanced paging channel is greater than the average transmit power of the cell in which the called terminal is located.
  • the network side sends the paging information through the enhanced paging channel; after determining that the user is in the idle state, the terminal detects the enhanced paging channel, and after determining that the paging channel is enhanced according to the paging information of the enhanced paging channel, The network side sends a paging response; wherein, the enhanced paging channel satisfies one or more of the following conditions: the coding gain of the enhanced paging channel is greater than the coding gain of all channels in the system; and the sequence autocorrelation gain of the enhanced paging channel is greater than The sequence autocorrelation gain of all channels in the system; and the transmit power of the enhanced paging channel is greater than the average transmit power of the cell in which the called terminal is located;
  • FIG. 1 is a schematic structural diagram of a system for transmitting paging information according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a core network device that sends paging information according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a base station that sends paging information according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a terminal that receives paging information according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a second system for transmitting paging information according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a second base station that transmits paging information according to an embodiment of the present invention
  • FIG. 7 is a schematic flowchart diagram of a method for sending paging information according to an embodiment of the present invention.
  • FIG. 8 is a schematic flowchart of a method for receiving paging information according to an embodiment of the present invention.
  • FIG. 9 is a schematic flowchart diagram of a method for transmitting paging information according to an embodiment of the present invention.
  • FIG. 10 is a schematic flowchart of a method for sending paging information according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of mapping paging information to a resource unit according to an embodiment of the present invention.
  • FIG. 12 is a schematic flowchart diagram of a second method for receiving paging information according to an embodiment of the present invention. detailed description
  • the paging information is transmitted through the enhanced paging channel, and the coverage capability of the channel is improved, so that when more terminals are indoors or in the blind zone, the paging information in the enhanced paging channel can still be detected, thereby improving the searching.
  • the success rate of information transmission is improved.
  • a system for transmitting paging information includes:
  • the core network device 10 is configured to: after receiving the paging request of the calling terminal, the base station indicating the tracking area (TA) of the called terminal sends the paging information through the enhanced paging channel; and receives the called terminal to return. Paging response;
  • the base station 20 is configured to receive the indication information sent by the core network device 10, and send the paging information by using the enhanced paging channel according to the indication information;
  • the terminal 30 is configured to: after determining that the user is in an idle state, detect an enhanced paging channel; and after determining that the user is paged according to the paging information received through the enhanced paging channel, to the core network device 10 and/or the base station 20 transmitting a paging response; wherein the enhanced paging channel satisfies one or more of the following conditions:
  • the coding gain of the enhanced paging channel is greater than the coding gain of all channels in the system
  • the coding gain of the enhanced paging channel is greater than the coding gain of all physical channels and symbols (such as PDSCH, PDCCH, etc.) specified in the 3GPP TS36.211 protocol; if applied to wideband code division multiple access In a Wide-Band Code Division Multiple Access (WCDMA) system, the coding gain of the enhanced paging channel is greater than the coding gain of all channels (such as PBCH, PDCH, etc.) specified in the 25.211 protocol;
  • WCDMA Wide-Band Code Division Multiple Access
  • the process of sending paging information by the network side when performing precoding processing on the paging information, precoding the paging information by using an encoding method with high coding gain, so as to improve the coding gain of the enhanced paging channel, such as using the packet. Code coding method, etc.
  • the sequence autocorrelation gain of the enhanced paging channel is greater than the sequence autocorrelation gain of all channels in the system; for example, if applied to an LTE system, the sequence autocorrelation gain of the enhanced paging channel is greater than that specified in the 3GPP TS 36.211 protocol. Sequence autocorrelation gain of a channel (such as PSS/SSS channel, PBCH, etc.); if applied to a Time Division Synchronized Code Division Multiple Access (TD-SCDMA) system, the sequence of the enhanced paging channel is The correlation gain is greater than the sequence autocorrelation gain of all channels (such as uplink synchronization channel, downlink synchronization channel, etc.) specified in the 3GPP TS25.221 protocol;
  • TD-SCDMA Time Division Synchronized Code Division Multiple Access
  • the length of the generated sequence is extended, so that the length of the extended sequence is greater than the length of the generated sequence, so as to improve the sequence of the enhanced paging channel.
  • Autocorrelation gains such as extensions using Walsh orthogonal sequences;
  • the enhanced paging channel can improve the coverage by about 30 dB.
  • the transmit power of the enhanced paging channel is greater than the average transmit power of the cell where the called terminal is located;
  • the transmit power of the enhanced paging channel in the embodiment of the present invention may be increased by using a power allocation technique between different satellites of the satellite; for example, if the transmit power of the enhanced paging channel is greater than the average transmit power of the cell where the called terminal is located, the average transmit power is more than 10 dB.
  • the enhanced paging channel can increase the coverage capability by about 30 dB.
  • the resource block (RB) of the enhanced paging channel in the embodiment of the present invention is an unallocated resource block in the system, and the resource block occupied by the enhanced paging channel may be specified in the protocol, or may be configured by the core network device, the base station, and the terminal. Make an appointment.
  • the core network device or the base station notifies the terminal of the configuration information of the enhanced paging channel through a broadcast channel in the system.
  • the configuration information includes a period, a location of the paging information, and the like. It should be noted that the core network device may directly notify the terminal of the configuration information of the enhanced paging channel through the broadcast channel in the system; or may first notify the base station of the TA cell where the called terminal is located, the configuration information of the enhanced paging channel, and then The base station notifies the terminal in the base station of the configuration information of the enhanced paging channel.
  • the paging information of the embodiment of the present invention includes the IMSI, TMSI or M-TMSI of the called terminal.
  • the first core network device 10 of the embodiment of the present invention includes:
  • the indicating module 110 is configured to: after receiving the paging request of the calling terminal, indicate that the base station of the TA where the called terminal is located sends the paging information by using the enhanced paging channel;
  • the receiving module 120 is configured to receive a paging response returned by the called terminal.
  • the indication module 110 indicates that the base station of the TA cell where the called terminal is located passes the enhanced paging channel after determining that the paging information is sent by using another paging channel other than the enhanced paging channel. Send paging information;
  • the paging channel other than the enhanced paging channel is the PDCCH and the PDSCH.
  • the base station 20 uses the P-RNTI to read the paging information on the PDSCH of the specified time-frequency resource location through the PDCCH scheduling terminal 30.
  • the indication module 110 determines to fail to send paging information by using other paging channels than the enhanced paging channel according to the following steps:
  • the indication module 110 determines to successfully send the paging information by using other paging channels than the enhanced paging channel according to the following steps:
  • the receiving module 120 determines to pass the enhanced paging channel.
  • the paging channel other than the other paging channel succeeds; or
  • the receiving module 120 determines to pass the enhanced paging channel when receiving the paging response of the called terminal within the set number of transmission times.
  • the paging channel other than the other paging channel succeeds.
  • the indication module 110 instructs the base station 20 to send the paging information through the enhanced paging channel while instructing the base station 20 to send paging information through the PDCCH.
  • the first base station 20 for transmitting paging information includes:
  • the indication receiving module 210 is configured to receive the indication information sent by the core network device 10;
  • the sending module 220 is configured to send paging information by using an enhanced paging channel according to the indication information.
  • the indication information received by the receiving module 210 from the core network device 10 is that the core network device instructs the sending module 220 of the base station 20 to send paging information by using a paging channel other than the enhanced paging channel, or Whether to use the enhanced paging channel to transmit paging information, or to simultaneously use other paging channels other than the enhanced paging channel and the enhanced paging channel to transmit paging information.
  • the sending module 220 periodically sends the paging information.
  • the sending module 220 further performs the following processes in the process of sending the paging information: dividing the paging information that needs to be transmitted into multiple data segments, and each data segment is in the paging information. The location identifier of the location is placed in the corresponding data segment, and each data segment is sent separately.
  • the sending module 220 periodically transmits each data segment, and sends one data segment per cycle, and each data segment is sent at least once.
  • the sending module 220 after sending all the data segments included in one complete paging information, the sending module 220 repeatedly sends each data segment of the complete paging information; or the sending module 220 repeatedly sends a data segment and then repeatedly sends the data segment. The next data segment, and so on, until all data segments of the complete paging message are repeatedly transmitted;
  • the number of times each data segment is repeatedly sent can be set as needed, such as repeated transmission twice. It should be noted that the length of the period may be set as needed.
  • the transmission is performed in a period of 5 ms or 10 ms, so that the system PSS/SSS sequence can be maintained consistently, and the terminal detection complexity is further reduced.
  • the sending module 220 is specifically configured to:
  • the modulation symbols corresponding to each data segment are respectively mapped to specific resource units in an Orthogonal Frequency Division Multiplexing (OFDM) symbol, where the specific resource unit refers to the OFDM symbol except for protecting the modulation.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the sending module 220 is specifically configured to:
  • the sending module 220 is further configured to:
  • the data other than the paging information may be a service number and/or a paging identifier (ID) of the calling terminal.
  • ID paging identifier
  • the terminal 30 of the embodiment of the present invention includes:
  • the detecting module 310 is configured to detect an enhanced paging channel after determining that the terminal is in an idle state
  • the processing module 320 is configured to send a paging response to the core network device and/or the base station after determining that the terminal is paged according to the paging information received through the enhanced paging channel.
  • the detection module 310 periodically detects the enhanced paging channel.
  • the detecting module 310 determines that the terminal is in an idle state according to the following steps: determining that the terminal is in an idle state when determining that one or more of the PSS, SSS, PBCH, BCCH, PDCCH, and PDSCH cannot be detected; or
  • the paging information detected by the terminal 30 through the enhanced paging channel is divided into the following two situations: First, the paging information includes all data of the identification code of the called terminal, that is, the base station 20 is transmitting. The paging information is not segmented during the call information process;
  • the paging information includes partial data of the identification code of the called terminal and a location identifier of the location of the partial data in the identification code, that is, the base station 20 performs segmentation processing on the paging information in the process of sending the paging information. .
  • the paging information includes all the data of the identification code of the called terminal, and the processing procedure of the processing module 320 of the terminal 30 includes:
  • the terminal When it is determined that the identification code of the detected paging information is consistent with its own identification code, it is determined that the terminal is paged, and sends a paging response to the core network device 10 and/or the base station 20; or
  • the paging information includes the partial data of the identification code of the called terminal and the location identifier of the location of the partial data in the identification code
  • the processing procedure of the processing module 320 of the terminal 30 includes:
  • the enhanced paging channel is continuously detected; when it is determined that the partial data of the identification code in each detected paging information is consistent with the data of the same location in its own identification code, it is determined that the terminal is paged, and The core network device 10 and/or the base station 20 sends a paging response; or
  • the processing module 320 determines that the terminal is being paged, indicating that the terminal is being paged.
  • processing module 320 is further configured to:
  • Data other than paging information transmitted by the base station 20 is received through the enhanced paging channel.
  • the data other than the paging information may be a service number and/or a paging ID of the calling terminal.
  • the processing module 320 may send a paging response to the core network device 10 and/or the base station 20 through the enhanced paging channel, or may send the paging response through an existing channel in the system.
  • the terminal 30 if the terminal 30 only sends a paging response to the base station 20, the base station 20 re-routes to the core network device.
  • the 10 transmitting the paging response; if the terminal 30 only sends a paging response to the core network device 10, the core network device 10 The paging response is sent to the base station 20.
  • a second system for transmitting paging information includes:
  • the core network device 40 is configured to: after receiving the paging request of the calling terminal, indicate that the base station of the TA where the called terminal is located initiates paging;
  • the base station 50 is configured to: after transmitting the paging information by using another paging channel other than the enhanced paging channel, determine to send the paging information by using an enhanced paging channel; or by using an enhanced paging channel While the paging channel sends the paging information, determining to send the paging information by using the enhanced paging channel;
  • the terminal 60 is configured to: after determining that the user is in an idle state, detecting the enhanced paging channel; and after determining that the user is paged according to the paging information received through the enhanced paging channel, to the core network device 40 and/or the base station 50 sends a page response.
  • the core network device 40 in the system for transmitting paging information is the same as the core network in the prior art, and is configured to instruct the base station 50 to initiate paging after receiving the paging request sent by the calling terminal. .
  • the terminal 60 in the system for transmitting paging information is the same as the terminal 30 in the system for transmitting paging information shown in FIG. 1 in the embodiment of the present invention, and details are not described herein again.
  • the second base station 50 for transmitting paging information includes:
  • a determining module 510 configured to determine, after failing to send paging information by using another paging channel other than the enhanced paging channel, to send paging information by using an enhanced paging channel; or by using an enhanced paging channel While the paging channel sends the paging information, determining to send the paging information by using the enhanced paging channel;
  • the paging sending module 520 is configured to send paging information by using an enhanced paging channel.
  • the paging sending module 520 is specifically configured to:
  • the paging information is divided into a plurality of data segments, and the location identifier of each data segment in the paging information is placed in the corresponding data segment; each data segment is transmitted separately.
  • the paging sending module 520 is further configured to:
  • a method for transmitting paging information is also provided in the embodiment of the present invention.
  • the principle of solving the problem is similar to the foregoing core network device and base station for transmitting paging information, and therefore the method is implemented. See the implementation of the core network device and the base station, and the details are not repeated here.
  • the method for sending paging information in the embodiment of the present invention includes the following steps:
  • Step 701 After receiving the paging request of the calling terminal, the network side sends the paging information by using the enhanced paging channel.
  • the paging information includes IMSI, TMSI, or M-TMSI.
  • Step 702 The network side receives a paging response returned by the called terminal.
  • the enhanced paging channel satisfies one or more of the following conditions:
  • the coding gain of the enhanced paging channel is greater than the coding gain of all channels in the system;
  • the sequence autocorrelation gain of the enhanced paging channel is greater than the sequence autocorrelation gain of all channels in the system;
  • the transmit power of the enhanced paging channel is greater than the average transmit power of the cell in which the called terminal is located.
  • the network side sends the paging information through the enhanced paging channel in step 701, which specifically includes the following two methods: one of the modes may be selected to send the paging information through the enhanced paging channel:
  • Manner 1 The network side first sends paging information through other paging channels except the enhanced paging channel, and after determining that the paging information is sent through the physical downlink control channel except the enhanced paging channel Transmitting paging information through an enhanced paging channel;
  • Manner 2 The network side sends the paging information by using an enhanced paging channel while transmitting paging information through other paging channels except the enhanced paging channel.
  • the network side If the network side includes the base station and the base station of each cell corresponding to the core network, the network side sends the paging information through the enhanced paging channel in step 701, and further includes the following situations, and one of the modes may be selected as needed to enhance the paging.
  • Channel to send paging information :
  • Mode A After receiving the paging request from the calling terminal, the core network indicates that the paging station corresponding to the tracking area TA is located after determining that the paging information is sent by using another paging channel other than the enhanced paging channel. Sending paging information through an enhanced paging channel;
  • the core network After receiving the paging request from the calling terminal, the core network indicates that the base station corresponding to the tracking area TA where the called terminal is located sends the paging information through other paging channels except the enhanced paging channel, and indicates the The base station sends the paging information by using an enhanced paging channel;
  • the core network After receiving the paging request from the calling terminal, the core network indicates that the base station corresponding to the tracking area TA of the called terminal initiates paging, and the base station first sends the paging by using a paging channel other than the enhanced paging channel.
  • Information and after determining that the paging information has failed to be transmitted through other paging channels other than the enhanced paging channel, the paging information is transmitted through the enhanced paging channel;
  • the core network After receiving the paging request from the calling terminal, the core network indicates that the base station corresponding to the tracking area TA of the called terminal initiates paging, and the base station sends the paging by using other paging channels except the enhanced paging channel. At the same time as the information, the paging information is also transmitted through the enhanced paging channel.
  • the network side determines that the paging message fails to be sent through other paging channels except the enhanced paging channel.
  • the paging response of the called terminal is not received within the set time, and then the paging is determined by the addition of the enhanced paging channel.
  • the network side After the paging information is sent through the paging channel other than the enhanced paging channel, and the paging response of the called terminal is not received within the set number of transmissions, it is determined that other than the enhanced paging channel is obtained.
  • the paging channel failed to send paging information.
  • the network side periodically sends paging information.
  • the network side divides the paging information to be sent into multiple data segments, and segments each data segment.
  • the location identifier of the location in the paging information is placed in the corresponding data segment; each data segment is transmitted separately.
  • the network side periodically transmits each data segment, and sends one data segment in each cycle, and each data segment is sent at least once.
  • the network side separately sends each data segment, including:
  • the network side respectively maps the modulation symbols corresponding to each data segment to a specific resource unit in the OFDM symbol.
  • the network side separately sends each data segment, including:
  • the network side respectively maps the modulation symbols corresponding to each data segment to the resource elements of the OFDM symbols except the PSS and/or SSS mapped OFDM symbols in the subframe, to avoid the paging information and the PSS/SSS in the system. Coincidence occurs.
  • the network side notifies the terminal to enhance the configuration information of the paging channel through the broadcast channel in the system.
  • the configuration information includes a period in which the network side sends the paging information, a location where the paging information is located, and the like.
  • the core network may notify the terminal to enhance the configuration information of the paging channel by using the broadcast channel in the system; or the base station may notify the terminal to enhance the configuration information of the paging channel; The base station may also notify the base station first, and then the base station notifies the terminal.
  • step 702 the method further includes:
  • the network side transmits data other than paging information to the called terminal through the enhanced paging channel.
  • the base station transmits data other than the paging information to the called terminal through the enhanced paging channel.
  • the data except the paging information includes at least a service number and/or a paging ID of the calling terminal.
  • the embodiment of the present invention further provides a method for receiving paging information.
  • the principle of solving the problem is similar to the foregoing terminal for receiving paging information. Therefore, the implementation of the method can be referred to the terminal. Implementation, repetition will not be repeated.
  • the method for receiving paging information in the embodiment of the present invention includes the following steps:
  • Step 801 After determining that the terminal is in an idle state, the terminal detects the enhanced paging channel.
  • Step 802 The terminal determines to send a paging response to the network side after determining that the paging information received by the enhanced paging channel is itself paged;
  • the enhanced paging channel satisfies one or more of the following conditions:
  • the coding gain of the enhanced paging channel is greater than the coding gain of all channels in the system
  • the sequence autocorrelation gain of the enhanced paging channel is greater than the sequence autocorrelation gain of all channels in the system;
  • the transmit power of the enhanced paging channel is greater than the average transmit power of the cell in which the called terminal is located.
  • the terminal determines that it is in an idle state by the following steps:
  • the terminal determines that it is in an idle state when it determines that one or more of the PSS, SSS, PBCH, BCCH, PDCCH, and PDSCH cannot be detected; or
  • the terminal determines that one or more of the PSS, SSS, PBCH, BCCH, PDCCH, and PDSCH cannot be decoded, it determines that it is in an idle state.
  • the paging information in the enhanced paging channel detected by the terminal is divided into the following two cases:
  • the paging information includes all data of the identification code of the called terminal;
  • the paging information includes partial data of the identification code of the called terminal and a location identifier of the location of the partial data in the identification code.
  • the paging information includes all the data of the identification code of the called terminal, and the processing of the terminal includes:
  • the paging information includes the partial data of the identification code of the called terminal and the location identifier of the location of the partial data in the identification code.
  • the processing of the terminal includes:
  • the enhanced paging channel is continuously detected; when it is determined that part of the data of the identification code in each detected paging information is consistent with the data of the same location in its own identification code, it is determined that the terminal is paged; or
  • the terminal periodically detects the enhanced paging channel.
  • the sending of the paging response by the terminal in step 802 includes the following situations:
  • the terminal sends a paging response to the base station, and then the base station sends the paging response to the core network;
  • the terminal sends the paging response to the core network, and then the core network sends the paging response to the base station;
  • the terminal simultaneously sends the paging response to the base station and the core network.
  • the terminal receives data other than the paging information sent by the network side through the enhanced paging channel.
  • the data other than the paging information may be a service number and/or a paging ID of the calling terminal.
  • the method for transmitting paging information in the embodiment of the present invention is described in detail below by taking the LTE system as an example.
  • user equipment A is called as the calling user
  • user equipment B is the called user.
  • the method for transmitting paging information in the embodiment of the present invention includes the following steps:
  • Step 901 A service of user equipment A initiates a call to user equipment B, and sends a call request to the core network;
  • Step 902 The core network acquires the TMSI of the user equipment B according to the call request, and the tracking area TA where the user equipment B is located;
  • Step 903 The core network sends the indication information to the base station of all the cells in the tracking area TA where the user equipment B is located, to indicate that the base station initiates paging to the user equipment B by using other paging channels except the enhanced paging channel, where
  • the indication information includes at least the TMSI of the user equipment B and the configuration information of the user equipment B listening to the paging moment;
  • Step 904 The base station uses a common P-RNTI to schedule the user equipment B to read paging information on the PDSCH channel of the specified time-frequency resource location through the PDCCH channel.
  • Step 905 User equipment B determines whether it is in an idle state
  • step 911 If yes, user equipment B does not normally feed back the paging response, and step 911 is performed;
  • step 906 is performed
  • the user equipment B determines that the user enters the idle state when determining that the PSS/SS, the PBCH, the BCCH of the cell in which the cell is located, the PDCCH that is scrambled by the P-RNTI, and one or more channels in the PDSCH cannot be normally read; 906.
  • User equipment B reads paging information on a PDSCH channel that specifies a time-frequency resource location.
  • Step 907 User equipment B determines whether the TMSI indicated in the paging information in the PDSCH channel is consistent with its own TMSI.
  • Step 908 The user equipment B determines that the paging is a page for itself, and returns a paging response to the base station, further initiates a random access procedure, and establishes a radio bearer;
  • Step 909 After the core network fails to send the paging information by using the paging channel other than the enhanced paging channel, the base station indicating all the cells of the TA where the user equipment B is located initiates an enhanced paging, that is, indicates that the base station passes the enhanced paging. Sending paging information on the channel;
  • determining that the paging information is sent by using other paging channels except the enhanced paging channel fails.
  • Step 910 The base station sends paging information to the user equipment B by using an enhanced paging channel.
  • Step 911 User equipment B enters an idle paging monitoring mode according to the network configuration indication, and detects an enhanced paging channel.
  • Step 912 The user equipment B decodes the paging information of the enhanced paging channel, and determines the TMSI indicated in the paging information. Whether it is consistent with the TMSI before the idle time;
  • Step 913 Determine that the paging is a paging to itself, and feed back a paging response to the base station;
  • the network side is also enhanced by sending paging information through other paging channels except the enhanced paging channel.
  • the paging information is sent on the paging channel.
  • the network side After receiving the paging response from the called user, the network side sends the service number of the calling user to the called user within the time specified by the two parties or the time specified by the agreement, or the paging ID and the primary The service number is jointly sent to the called user.
  • the following is still taking the LTE system as an example to describe the design of the enhanced paging channel in detail to increase the sequence autocorrelation gain of the enhanced paging channel.
  • MME Mobility Management Entity
  • S-TMSI Temporary Mobile Subscriber Identity
  • MME Mobility Management Entity
  • S-TMSI Temporary Mobile Subscriber Identity
  • the meaning of the TMSI used to identify the UE is different in different systems.
  • the S-TMSI is used to identify the UE; in the Universal Mobile Telecommunication System (UMTS) system.
  • the P-TMSI is used to identify the UE in a packet switched (PS) domain.
  • the network side only needs to track the M-TMSI of the called UE at the called UE. Paging in the area TA;
  • the network side may also page the TMSI of the called UE in the tracking area TA where the called UE is located.
  • the following describes the enhanced paging channel in the embodiment of the present invention by using the M-TMSI as the example of the paging information sent by the network side through the enhanced paging channel.
  • Step 1001 The network side divides the 32-bit data of the M-TMSI when determining that the M-TMSI needs to be sent through the enhanced paging channel. It is 8 data segments, each data segment includes 4 bits of M-TMSI data, and the position identifier indicating the position of each 4 bit data segment in the 32-bit M-TMSI is placed in the corresponding data segment, wherein each position The identifier includes 3 bits of data, and each data segment includes 7 bits of data, thereby reducing the detection complexity of the terminal;
  • Step 1002 The network side performs sequence design in units of each data segment to obtain a sequence corresponding to each data segment.
  • the network side expands the sequence corresponding to each data segment, for example, each The sequence corresponding to the data segments is extended to a sequence of length 256.
  • Step 1003 Perform modulation processing on a sequence of length 256 corresponding to each data segment, where each data segment occupies 128 modulation symbols;
  • a Quaternary Phase Shift Keying (QPSK) modulation method a 16QAM (Quadature Amplitude Modulation) modulation method, an 8 QAM modulation method, or the like may be used;
  • QPSK Quadrature Phase Shift Keying
  • each data segment is modulated by a QPSK modulation method to ensure correct reception of the signal.
  • Step 1004 Map 128 modulation symbols corresponding to each data segment obtained in step 1003 to a physical resource block (PRB) of the LTE system center;
  • PRB physical resource block
  • the network side respectively maps the modulation symbols corresponding to each data segment to a specific resource unit (RE) in the OFDM symbol, where the specific resource unit refers to the resource unit in the OFDM symbol except for the protection modulation symbol.
  • RE resource unit
  • the LTE system includes 72 REs per OFDM symbol (Sign), and 128 modulation symbols corresponding to each data segment occupy 64 REs of two Symbols in the subframe, and 4 REs are reserved on each side of the two Symbols.
  • the 64 resource units in each Symbol are specific resource units.
  • the modulation symbols corresponding to each data segment are mapped to OFDM symbols other than the PSS and/or SSS mapped OFDM symbols.
  • the modulation symbols corresponding to each data segment are mapped to the 4th and 5th in the subframe.
  • Step 1005 The network side periodically sends each data segment, and sends one data segment per cycle.
  • the network side sends each data segment in a period of 5ms or 10ms, so as to maintain the consistency with the system PSS/SSS sequence, further reducing the terminal detection complexity.
  • the network side periodically transmits each data segment repeatedly;
  • the network side may repeatedly send each data segment in sequence; for example, for each data segment, the network side repeats the transmission twice, that is, the network side sends the first data segment in the first cycle, in the second cycle.
  • the first data segment is still sent, the second data segment is sent in the third cycle, the second data segment is still transmitted in the fourth cycle, and so on, until the M-TMSI is sent. All data segments;
  • the network side may further repeat each data segment corresponding to the paging information after transmitting a complete paging message; still sending the network side twice as an example, and the network side sends the first one in the first cycle.
  • the data segment, in the second cycle sends the second data segment, ..., sends the eighth data segment in the eighth cycle, and transmits the first data segment in the ninth cycle, in the tenth
  • the second data segment is sent periodically, ..., and the eighth data segment is sent in the sixteenth cycle; If the network side sends a data segment in a period of 5ms or 10ms, a complete enhanced paging cycle requires 16*5ms or 16*10ms.
  • the maximum number of times the system can configure full enhanced paging is 1-5 times.
  • the method for the terminal to receive the M-TMSI through the enhanced paging channel includes the following steps: Step 1201: After determining that the terminal is in an idle state, the terminal periodically detects the enhanced paging channel.
  • Step 1202 After detecting a paging information, the terminal determines its own according to the location identifier in the paging information.
  • step 1203 is performed
  • step 1204 is performed
  • Step 1203 The terminal determines whether there is still paging information corresponding to the M-TMSI of the called terminal.
  • step 1205 is performed
  • step 1206 is performed
  • Step 1204 After the sleep setting is set, the enhanced paging channel is continuously detected.
  • the terminal can continue to detect the enhanced paging channel after sleeping for 1 ⁇ 5 detection periods;
  • Step 1205 the terminal continues to detect the enhanced paging channel, and step 1202 is performed;
  • Step 1206 The terminal determines that it is paged, and returns a paging response to the network side.
  • the terminal stops detecting the enhanced paging channel, and sleeps 1 After the 5 enhanced paging cycles, the enhanced paging channel continues to be detected, thereby reducing the detection complexity of the terminal.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention can be embodied in the form of a computer program product embodied on one or more computer-usable storage interfaces (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.
  • computer-usable storage interfaces including but not limited to disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions can also be stored in a particular computer capable of booting a computer or other programmable data processing device In a computer readable memory that operates in a computer readable memory, causing instructions stored in the computer readable memory to produce an article of manufacture comprising instruction means implemented in a block or in a flow or in a flow chart and/or block diagram of the flowchart The functions specified in the boxes.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
  • the network side sends the paging information through the enhanced paging channel; after determining that the user is in the idle state, the terminal detects the enhanced paging channel, and after determining that the paging channel is enhanced according to the paging information of the enhanced paging channel, The network side sends a paging response; wherein, the enhanced paging channel satisfies one or more of the following conditions: the coding gain of the enhanced paging channel is greater than the coding gain of all channels in the system; and the sequence autocorrelation gain of the enhanced paging channel is greater than The sequence autocorrelation gain of all channels in the system; and the transmit power of the enhanced paging channel is greater than the average transmit power of the cell in which the called terminal is located; since the enhanced paging channel of the embodiment of the present invention is improved relative to other channels in the system The coverage capability of the channel, so that when more paging is transmitted indoors or in a blind zone, the paging information in the enhanced paging

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

Abstract

Selon ses modes de réalisation, la présente invention se rapporte au domaine des communications sans fil, et en particulier à un procédé, un dispositif et un système permettant de transmettre des informations de recherche de terminal destinées à résoudre le problème rencontré dans l'art antérieur lorsque le canal servant à transmettre les informations de recherche de terminal n'a que peu de capacités de couverture et qu'un terminal ne peut donc pas recevoir normalement les données transmises par un côté réseau dans les cas où les signaux sont faibles. Le procédé conforme aux modes de réalisation de la présente invention, qui permet de transmettre des informations de recherche de terminal, se déroule de la manière suivante : quand un côté réseau reçoit une demande de recherche de terminal en provenance d'un terminal demandeur, il transmet des informations de recherche de terminal par le biais d'un canal de recherche de terminal amélioré ; et il reçoit une réponse de recherche de terminal renvoyée par un terminal demandé. Par rapport à d'autres canaux du système, le canal de recherche de terminal amélioré selon les modes de réalisation de la présente invention a une meilleure capacité de couverture, et c'est la raison pour laquelle, lorsque les informations de recherche de terminal sont transmises par le biais de ce canal amélioré, un plus grand nombre de terminaux peut détecter ces informations sur ledit canal de recherche de terminal amélioré, même dans un espace clos ou dans une zone de silence. Ainsi, le taux de réussite de la transmission des informations de recherche de terminal est plus élevé.
PCT/CN2013/075819 2012-05-18 2013-05-17 Procédé, dispositif et système permettant de transmettre des informations de recherche de terminal WO2013170781A1 (fr)

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