WO2014110938A1 - 终端直达通信中发现信号的发送方法、通信终端及系统 - Google Patents

终端直达通信中发现信号的发送方法、通信终端及系统 Download PDF

Info

Publication number
WO2014110938A1
WO2014110938A1 PCT/CN2013/087500 CN2013087500W WO2014110938A1 WO 2014110938 A1 WO2014110938 A1 WO 2014110938A1 CN 2013087500 W CN2013087500 W CN 2013087500W WO 2014110938 A1 WO2014110938 A1 WO 2014110938A1
Authority
WO
WIPO (PCT)
Prior art keywords
communication
terminal
paging
base station
discovery signal
Prior art date
Application number
PCT/CN2013/087500
Other languages
English (en)
French (fr)
Inventor
罗宇民
谢峰
陈琳
马书宇
黄莹
刘玉兰
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2014110938A1 publication Critical patent/WO2014110938A1/zh

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/005—Discovery of network devices, e.g. terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • the present invention relates to the field of communications, and in particular, to a method, a communication terminal and a system for transmitting a signal found in a terminal direct communication.
  • terminal direct communication technology, which enables communication between two communication terminals without having to pass through the core network device.
  • D2D communication technology includes two parts: D2D Discovery process and D2D communication process; D2D discovery means that when the distance between multiple wireless terminal devices is close to the direct communication between wireless devices, each other finds each other. D2D communication means that two wireless terminal devices do not communicate directly through the core network device.
  • the current communication terminal when performing D2D discovery, the current communication terminal often draws a mechanism for continuously transmitting a D2D discovery signal on the available resources to allow the neighboring communication terminal to receive the D2D discovery signal to confirm that the communication terminal is in the vicinity, and the communication mechanism mode causes the communication terminal to
  • the waste of electricity leads to a great waste of wireless network communication resources, and may lead to the rush of discovery signal messages sent by different communication terminals.
  • the invention provides a method for transmitting a discovery signal in a terminal direct communication, a communication terminal and a system, and solves the problem that the communication terminal continuously transmits D2D discovery on the available resources in the current terminal direct communication.
  • the present invention provides a method for transmitting a discovery signal in a terminal direct communication.
  • the method includes: the source terminal acquires communication parameters when the network side device communicates with other communication terminals; and the source terminal sends the discovery according to the communication parameter. signal.
  • the network side device in the foregoing embodiment includes a base station, and further includes a mobility management entity and/or a newly added network element.
  • the step of the source terminal acquiring communication parameters when the network side device communicates with other communication terminals is:
  • the mobility management entity and/or the newly added network element acquires communication parameters when the base station sends a paging signal to other communication terminals, and the communication parameter includes a subframe number of the subframe used by the base station to send the paging signal to other communication terminals, and the subframe The frame number of the paging frame to which it belongs and the paging cycle.
  • the step of the source terminal in the foregoing embodiment acquiring the communication parameter when the base station sends the paging signal to the other communication terminal is: the source terminal selects the target communication terminal; the source terminal sends the terminal direct communication discovery request to the base station, the discovery request Carrying the identification information of the target communication terminal; the source terminal receives the response signal fed back by the base station, and the response signal carries the communication parameter when the base station sends the paging signal to the target communication terminal; and the source terminal extracts the communication parameter in the response signal.
  • the step of the source terminal in the foregoing embodiment transmitting the discovery signal according to the communication parameter is: the source terminal sends a discovery signal corresponding to the frame number of the paging signal sent by the base station to the target communication terminal.
  • the step of the source terminal in the foregoing embodiment transmitting the discovery signal according to the communication parameter is: the source terminal sends a discovery periodic transmission discovery signal to the communication terminal by the base station to the communication terminal according to a predetermined paging cycle of the communication terminal.
  • the step of periodically transmitting the discovery signal in the foregoing embodiment is: the source terminal determines, according to its own and/or the network side device, the transmission period and the number of transmissions of the transmission discovery signal, and according to the transmission period and the transmission.
  • the quantity sends a discovery signal.
  • the present invention provides a communication terminal.
  • the communication terminal includes an acquisition module and a transmission module.
  • the acquisition module is configured to: acquire communication parameters when the network side device communicates with other communication terminals;
  • the module is set to: send a discovery signal according to the communication parameters obtained by the acquisition module.
  • the present invention also provides a communication system for terminal direct communication.
  • the terminal discovery system includes at least one communication terminal provided by the present application as a source terminal and a network side device; : Acquire communication parameters when the network side device communicates with other communication terminals, and send a discovery signal according to the communication parameters.
  • the source terminal acquires the communication parameter that the network side device communicates with other communication terminals, and according to the communication parameter, only the network side device sends the communication parameter to the other communication terminal.
  • the communication signal simultaneously transmits the discovery signal, while ensuring that the other communication terminal can receive the discovery signal, avoiding waste of communication resources, accelerating the discovery process of the terminal direct communication, and saving the power of the double-ended communication of the D2D communication.
  • FIG. 1 is a schematic diagram of a method for transmitting a discovery signal according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a method for transmitting a discovery signal according to another embodiment of the present invention
  • FIG. 3 is a schematic diagram of a communication system according to an embodiment of the present invention
  • Figure 4 is a schematic diagram of the source terminal of Figure 3;
  • FIG. 5 is a schematic diagram of the acquisition module of Figure 4.
  • FIG. 6 is a schematic diagram of a terminal transmitting a discovery signal in the prior art
  • FIG. 7 is a schematic diagram of a terminal transmitting a discovery signal according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a terminal transmitting a discovery signal according to another embodiment of the present invention.
  • FIG. 9 is a schematic diagram of a terminal transmitting a discovery signal according to another embodiment of the present invention.
  • FIG. 10a is a schematic diagram of a terminal transmitting a discovery signal according to another embodiment of the present invention.
  • FIG. 10b is a schematic diagram of a terminal transmitting a discovery signal according to another embodiment of the present invention
  • FIG. 10c is a schematic diagram of a terminal transmitting a discovery signal according to another embodiment of the present invention.
  • the communication parameters mentioned in the following embodiments of the present invention refer to communication parameters used by the network side device, such as a base station, when communicating with the communication terminal for paging signal transmission and reception, not when the two communication terminals perform D2D communication.
  • a method for transmitting a discovery signal in D2D communication includes the following steps:
  • Step S101 The source terminal acquires communication parameters when the network side device communicates with other communication terminals.
  • the source terminal to obtain communication parameters when the network side device communicates with other communication terminals: one is obtained through the network side device, which will be described in detail below; the other is obtained according to the communication protocol, because The communication period in which the network side device communicates with other communication terminals is predetermined.
  • the base station sends a paging signal to the communication terminal (ie, 32, 64, 128, 256 radio frames) and subframe positions (0, 4, 5, 9 subframe positions of paging frames in FDD mode, 0, 4, 5, 6 subframe positions of paging frames in TDD mode), source
  • the terminal selects a period parameter and each subframe position parameter, and rotates the discovery signal according to the selected paging period at the subframe position.
  • the network side device includes a base station, and further includes a mobility management entity (MME) and/or a newly added network element, where the newly added network element refers to a newly added network entity for managing a communication terminal to perform a D2D discovery and/or communication process; Steps for obtaining communication parameters when the network side device communicates with other communication terminals Specifically, the source terminal acquires the communication parameter when the base station sends the paging signal to the other communication terminal, and the step of the source terminal acquiring the communication parameter when the base station sends the paging signal to the other communication terminal may specifically be: the base station stores its own or The communication parameters of the base station and other target communication terminals acquired by the mobility management entity (MME) and/or the newly added network element are delivered to the source terminal: the communication parameters include the subframe used by the base station to send the paging signal to other communication terminals.
  • MME mobility management entity
  • MME mobile management entity
  • the manner in which the base station sends the communication parameters of the base station and the other target communication terminal that are stored by the base station and/or the newly added network element to the source terminal may be: the mobility management entity (MME) And/or the newly added network element sends other parameter information capable of deriving the paging frame number, the subframe number, and the paging period, such as the UE-ID of the communication terminal, the paging period T, and the number of paging opportunities nB to the source.
  • the terminal needs to calculate the paging frame number, the subframe number, and the paging period according to the information parameters.
  • the source terminal receives the UE-ID, paging period T, and paging opportunity of the communication terminal.
  • the subframe number of the subframe used by the base station required to send the discovery signal by the source terminal to the other communication terminal, the frame number of the paging frame to which the subframe belongs, and the paging cycle are calculated according to the communication protocol;
  • a calculation example may be: setting the communication mode to FDD mode, the UE_ID is 135, the paging cycle T is 128, and the number of paging opportunities nB is 32, which can be calculated according to the protocol 3GPP36.304.
  • the total number of paging frames is 32.
  • the offset position of the paging frame is 28, that is, the position of the radio frame offset 28 is the paging frame position
  • the subframe position is the subframe number 9.
  • the step of the source terminal acquiring the communication parameter when the base station sends the paging signal to the other communication terminal may be specifically: the source terminal acquires the communication when the base station sends the paging signal to the other communication terminal by using the mobility management entity and/or the newly added network element. parameter.
  • the process may be specifically: the source terminal sends a request message for requesting the communication parameter of the base station to the base station, and the base station forwards the request message to the mobility management entity and/or the newly added network element, the mobility management entity, and/or the newly added network element.
  • the base station that it stores is in communication with the other
  • the communication parameters used by the terminal for communication are added to the corresponding signals and transmitted to the source terminal through the base station.
  • Step S102 The source terminal sends a discovery signal according to the communication parameter.
  • the source terminal acquires a paging position and a paging cycle in which the base station sends a paging signal to the other communication terminal according to the communication parameter, and sends the paging signal to the base station to send the paging signal at the same time as the paging period is sent in the D2D communication.
  • the discovery signal ; at this time, the source terminal only needs to send the discovery signal at a specific paging resource location and time, and other communication terminals that can perform D2D communication only need to detect and receive the paging signal sent by the base station.
  • the signal is found to reduce the power consumption of the source terminal and the receiving terminal.
  • the method for transmitting a discovery signal in D2D communication includes the following steps:
  • Step S201 The source terminal selects a D2D communication object, that is, a target communication terminal.
  • the manner in which the source terminal selects the target communication terminal may be: the source terminal selects at least one communication terminal from the stored buddy list and/or the known communication terminal as the target communication terminal.
  • Step S202 The source terminal sends a discovery request of the terminal direct communication to the base station; the discovery request carries a field requesting the communication parameter of the target communication terminal.
  • the source terminal determines the target communication terminal by the source terminal selecting at least one communication terminal from the stored buddy list and/or the known communication terminal as the target communication terminal, the source terminal sends the discovery request to the base station to carry the target communication terminal.
  • Identification information may be unique information such as a telephone number, a name, an IMEI of the target communication terminal.
  • Step S203 The source terminal receives the response signal fed back by the base station, where the response signal carries the communication parameter of the target communication terminal.
  • the base station When the base station receives the discovery request carrying the identification information of the target communication terminal, extracting the identification information of the target communication terminal carried by the base station, and submitting the identification information of the target communication terminal carried by the mobile station to the mobile management entity and/or the newly added network element, the mobility management entity, and/or adding The network element queries, according to the identifier information, the target communication corresponding to the identifier information by the base station
  • a communication parameter such as nB is added to the response signal when the queried base station sends a paging signal to the target communication terminal, and is fed back to the source terminal that sends the discovery request.
  • Step S204 The source terminal extracts the communication parameter in the response signal.
  • Step S205 The source terminal sends a discovery signal according to the communication parameter of the network side device.
  • the communication parameters extracted by the source terminal include the subframe number of the subframe used by the base station to send the paging signal to the other communication terminal, the frame number of the paging frame to which the subframe belongs, and the communication parameter of the paging cycle, at the base station And transmitting the discovery signal under the control of the mobility management entity and/or the newly added network element and/or the source terminal itself, which may be: the source terminal uses a paging cycle as a period, and the base station terminates with other communication ends, periodically.
  • the rotation sends a discovery signal.
  • the subframe number of the subframe used by the base station to send the paging signal to other communication terminals is calculated according to the protocol, The frame number of the paging frame to which the subframe belongs and the communication parameter of the paging cycle, in calculating the subframe number of the subframe used by the base station to send the paging signal to other communication terminals, and the frame number of the paging frame to which the subframe belongs After the communication parameters of the paging cycle, the previous steps are performed.
  • the sending of the periodic rotation transmission discovery signal may be that the source terminal determines the transmission period and the number of transmissions of the transmission discovery signal under the control of the base station and/or the mobility management entity and/or the newly added network element and/or the source terminal itself, The base station and/or the mobility management entity and/or the newly added network element and/or the source terminal itself determine the transmission period and the number of transmissions of the discovery signal sent by the source terminal according to the network operation load or the priority of the source terminal.
  • Step S206 The target communication terminal receives the discovery signal and enters the D2D response process.
  • the other communication terminal After receiving the discovery signal sent by the source terminal, the other communication terminal feeds back the response information to the base station or the source terminal to complete the D2D discovery process, and according to the two communication ends carried by the discovery signal.
  • the terminal performs D2D communication on parameters required for D2D communication.
  • the communication system 3 provided by the present invention includes a source terminal 31 and a network side device 32.
  • the communication terminal provided by the invention is configured to acquire communication parameters when the network side device 32 communicates with other mobile terminals, and send a discovery signal according to the communication parameters.
  • the network side device 32 in the embodiment shown in FIG. 3 includes a base station, and further includes a mobility management entity and/or a newly added network element; at this time, the source terminal 31 is configured to use the mobility management entity and/or The new network element acquires communication parameters when the base station sends a paging signal to other mobile terminals.
  • the communication parameters include a subframe number of a subframe used by the base station to send a paging signal to other mobile terminals, and a frame of the paging frame to which the subframe belongs. Number and paging cycle.
  • the network side device 32 in the embodiment shown in FIG. 3 is not required, and the source terminal 31 can obtain the communication parameters of the target communication terminal through the network side device 32, and can also use other methods, such as standard searching. Call communication protocol and other methods to obtain communication parameters.
  • the communication terminal 31 provided by the present invention includes an acquisition module 311 and a transmission module 312 connected to each other;
  • the communication parameter when the network side device communicates with other communication terminals is obtained; the manner of obtaining may be obtained by reading a standard paging communication protocol built in and/or stored by the source terminal 31, or obtained from the network side device;
  • the sending module 312 is configured to send a discovery signal according to the communication parameter acquired by the obtaining module 311.
  • the network side device 32 includes a base station, the mobile management entity and/or the newly added network element; the obtaining module 311 in the foregoing embodiment is configured to acquire the base station by using the mobility management entity and/or the newly added network element.
  • the communication parameter when the paging signal is sent to the other communication terminal, the communication parameter includes the subframe number of the subframe used by the base station to send the paging signal to the other communication terminal, the frame number of the paging frame to which the subframe belongs, and the paging cycle.
  • FIG. 5 is a schematic diagram of the acquisition module of FIG. 4; as shown in FIG. 5, in the embodiment, the acquisition module 311 in the embodiment shown in FIG. 4 includes a selection sub-module 3111 and a transmission sub-module 3112, which are connected to each other. Submodule 3113 and extraction submodule 3114, at this time:
  • the selection sub-module 3111 is used by the user of the source terminal 31 to select the target communication terminal; the manner in which the source terminal user selects the target communication terminal may be that the source terminal user selects at least one communication terminal from among the stored buddy list and/or the known communication terminal. As a target communication terminal, thereby implementing a simultaneous discovery function of single or multiple target communication terminals;
  • the sending sub-module 3112 is configured to send a discovery request of the terminal direct communication to the network side device 32 such as a base station, where the discovery request carries the identification information of the target communication terminal; when the selection sub-module 3111 selects the target communication terminal, the source terminal stores the information from the source terminal.
  • the sending submodule 3112 sends the discovery request to the base station to carry the identification information of the target communication terminal, and the identification information may be the telephone number of the target communication terminal.
  • Information such as the UE-ID or IMEI of the terminal that uniquely identifies the identity of the terminal;
  • the receiving submodule 3113 is configured to receive a response signal fed back by the network side device 32 such as a base station; the response signal carries a communication parameter when the base station sends the paging signal to the target communication terminal; and when the base station receives the identification information carrying the identification information of the target communication terminal
  • the network side device 32 such as a base station
  • the response signal carries a communication parameter when the base station sends the paging signal to the target communication terminal
  • the base station receives the identification information carrying the identification information of the target communication terminal
  • extracting the identification information of the target communication terminal carried by the mobile communication entity and/or the newly added network element, and the mobile management entity and/or the newly added network element query the corresponding target communication terminal according to the identification information, and query Transmitting, when the base station sends a paging signal to the target communication terminal, the communication parameter is added to the response signal, and is fed back to the source terminal that sends the discovery request;
  • the extraction sub-module 3114 is configured to extract communication parameters in the response signal. At this time, the communication parameters when the network side device communicates with the target communication terminal selected by the selection sub-module 3111 are extracted.
  • the selection sub-module 3111 in the embodiment shown in FIG. 4 is not necessary.
  • the target communication terminal can be set to communicate with the base station. And all communication terminals within the D2D communication range of the source terminal.
  • the sending module 312 is configured to send, according to the paging cycle, a subframe corresponding to the subframe number in the paging frame corresponding to the frame number of the paging signal sent by the base station to the other communication terminal or A periodic rotation of the discovery signal is transmitted at all resource locations of the adjacent subframe.
  • the sending module 312 is further configured to use a base station to set a predetermined paging cycle of the communication terminal as a period, that is, take one of four default periods, and the base station transmits a paging signal to the communication terminal. signal.
  • the sending module 312 is further configured to determine, according to the source terminal itself and/or the network side device, a transmission period and a transmission quantity of the transmission discovery signal, and send the discovery signal according to the transmission period and the transmission quantity.
  • the method for transmitting a discovery signal according to the obtained communication parameter in the method for transmitting a discovery signal in the terminal direct communication provided by the present invention is further described below with reference to FIG. 2 to FIG. 10c, the background art and the application example, FIG. 6 to FIG.
  • the subframe number represented by the black background white font in 10c is the resource location that the source terminal may use to transmit the discovery signal.
  • the base station When the communication terminal communicates with the base station, the base station passes a specific subframe in the specific paging frame.
  • One paging frame includes 10 subframes, numbered 0, 1 9 ) to send paging signals, and LTE technology is divided into two major directions: TDD (time division duplex) and FDD (frequency division duplex).
  • TDD time division duplex
  • FDD frequency division duplex
  • Describe the LTE technology for the FDD direction (for the FDD mode, the base station performs paging to the communication terminal by using the subframe numbered "0, 4, 5, 9" in the paging frame; for the TDD mode, the base station is The paging of the communication terminal is performed by the subframe numbered "0, 1, 5, 6" in the paging frame, and the following assumption is made:
  • There is only one source terminal, and only one base station, the target communication terminal The number of the communication terminals is different; the following describes the case where the number of target communication terminals is different:
  • FIG. 6 is a schematic diagram of a communication terminal transmitting a discovery signal in the prior art; as can be seen from FIG. 6, in the prior art, the transmission of the source communication terminal discovery signal may be performed on any subframe of the radio frame. Continuous transmission, since the target communication terminal may be in the IDLE state, the mechanism for transmitting the discovery signal causes the target communication terminal in the IDLE state to continuously detect the reception discovery signal, and does not periodically receive the discovery signal. The effect is that the power of the double-ended terminal is wasted, and the wireless resources of the network are wasted.
  • FIG. 7 is a schematic diagram of a terminal transmitting a discovery signal according to an embodiment of the present invention.
  • the communication system in the embodiment shown in FIG. 3 further includes a target communication terminal, and at this time, the source terminal is directed to a specific target communication terminal.
  • Sending a discovery signal through the implementation of the embodiment shown in FIG.
  • the frame resource location or calculated by parameters such as the UE-ID information of the target communication terminal, the DRX period T and the number of paging opportunities, determine that the communication parameter of the base station transmitting the paging signal to the target communication terminal is the frame number.
  • the subframe in the paging frame of PF ( i ) " is 0"; the source terminal periodically transmits the discovery signal only at the location shown in FIG. 7; the target communication terminal only transmits the homing sent by the receiving base station At the same time as the signal is called, the discovery signal is detected and received.
  • FIG. 8 is a schematic diagram of a terminal transmitting a discovery signal according to another embodiment of the present invention.
  • the communication system in the embodiment shown in FIG. 3 further includes four target communication terminals, which are determined by the implementation of the embodiment shown in FIG.
  • the communication parameters when the base station transmits the paging signal to the target communication terminals are the subframe numbers in the paging frame with the frame number "PF ( i ) " being "0", "4", "5", "9". "Subframe; the source terminal periodically transmits the discovery signal only at the location shown in FIG. 8; the target communication terminal detects and receives the discovery signal only while receiving the paging signal transmitted by the base station.
  • FIG. 9 is a schematic diagram of a terminal transmitting a discovery signal according to another embodiment of the present invention.
  • the communication system in the embodiment shown in FIG. 3 further includes N communication terminals, which are determined by the implementation of the embodiment shown in FIG.
  • the communication parameters of the paging signal sent by the base station to the target communication terminals are the subframe number in the paging frame with the frame number "PF (1)", "PF (2)" and "PF (N)" being "0".
  • Sub-frame the source terminal periodically transmits the discovery signal only at the position shown in FIG. 9; the target communication terminal only While receiving the paging signal transmitted by the base station, the discovery signal is detected and received.
  • 10a, 10b, and 10c are schematic diagrams of a terminal transmitting a discovery signal according to another embodiment of the present invention; at this time, the communication system in the embodiment shown in FIG. 3 further includes N communication terminals, and the UE-ID of each UE is not known. And the information, according to the paging period used by the base station paging terminal, periodically traverses the position of the paging frame and the subframe of the idle state terminal in the to-be-discovered group. Since the implementation of the embodiment shown in FIG. 2 determines that the communication parameters of the base station transmitting the paging signal to the communication terminals are respectively the frame number "PF (1)",
  • the source terminal determines the transmission period and the number of transmissions of the transmission discovery signal under the control of the source terminal itself and/or the network side device, and sends a discovery signal according to the transmission period and the number of transmissions, for example, according to FIG. 10a, 10b, and 10c.
  • the method shown periodically sends a discovery signal; the communication terminal detects and receives the discovery signal sent by the source terminal only when receiving the paging signal sent by the base station; specifically:
  • the source terminal selects, under the control of the base station, a method of selecting one or more (shown as one paging frame in FIG. 10a) paging frames in a paging cycle to transmit a discovery signal, Specifically, the source terminal selects all subframes in another one or more paging frames to send a discovery signal in a next cycle; periodically traverses paging frames and subframes of the target communication terminal that complete all idle states of the source terminal. The location sends a discovery signal; the target communication terminal receives the discovery signal at the corresponding paging frame and the subframe position according to its own paging cycle and communication parameters, and ignores the discovery signal on the non-self paging frame and the subframe.
  • the source terminal selects one or more subframes for selecting all paging frames in one paging cycle under the control of the base station (FIG. 10b is one subframe of all paging frames in one paging cycle).
  • the manner of discovering the signal is specifically: the source terminal selects another one or more subframes of all paging frames to send a discovery signal in the next cycle; periodically traverses the paging frame of the target communication terminal that completes all idle states of the source terminal and The location of the subframe transmits a discovery signal; the target communication terminal receives the discovery signal at the corresponding paging frame and subframe position according to its own paging cycle and communication parameters. Number, ignores the discovery signal on non-self paging frames and sub-frames.
  • the source terminal selects one or more subframes of one or more paging frames to be selected in one paging cycle under the control of the base station (FIG. 10c shows three paging frames in one paging cycle).
  • the method of transmitting the discovery signal by two subframes is specifically: the source terminal selects one or more subframes of another paging frame to transmit the discovery signal in the next cycle; periodically traverses the target communication of all the idle states of the source terminal.
  • the location of the paging frame and the subframe of the terminal sends a discovery signal; the target communication terminal receives the discovery signal at the corresponding paging frame and the subframe position according to its own paging cycle and communication parameters, ignoring the non-self paging frame and the sub-frame The discovery signal on the frame.
  • the source terminal acquires the communication parameter that the network side device communicates with other communication terminals, and according to the communication parameter, only the network side device sends the communication parameter to the other communication terminal.
  • the communication signal transmits the discovery signal at the same time, while ensuring that the other communication terminal can receive the discovery signal, the waste of communication resources caused by the source terminal transmitting the discovery signal on all the radio frames is avoided, and the communication burden of the communication network is reduced.
  • the source terminal and other communication terminals since the source terminal and other communication terminals only transmit/receive the discovery signal while the base station transmits the paging signal, the power of the communication terminal is saved, the discovery rate of the target communication terminal and the source terminal is also accelerated, and the use of the user is increased. Experience.

Landscapes

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

Abstract

一种终端直达通信中发现信号的发送方法、通信终端及系统。该终端直达通信中发现信号的发送方法包括：源终端获取网络侧设备与其他通信终端进行通信时的通信参数；源终端根据通信参数发送发现信号。上述方案在终端直达通信中发现信号的发送阶段，源终端获取到网络侧设备与其他通信终端进行通信的通信参数，并根据该通信参数仅在网络侧设备向其他通信终端发送通信信号的同时发送发现信号，在保证其他通信终端可以接收到该发现信号的同时，避免了通信资源的浪费，也加速了终端直达通信的发现进程。

Description

终端直达通信中发现信号的发送方法、 通信终端及系统
技术领域
本发明涉及通信领域， 尤其涉及一种终端直达通信中发现信号的发送方 法、 通信终端及系统。
背景技术
随着智能终端的快速发展， 用户对终端应用及通信速率的要求也越来越 高， 而在当前的 LTE ( Long Term Evolution , 长期演进）通信系统中， 两个 通信终端必须通过 eNB ( evolution Node B, 演进的节点 B )及核心网设备才 能通信； 为了解决这个问题， 本领域的技术人员提供了一种 D2D ( Device to
Device, 终端直达）通信技术， 这种通信技术使得两个通信终端之间不必通 过核心网设备就可进行通信。
D2D通信技术包括 D2D发现（ D2D Discovery )过程和 D2D通信 ( D2D Communication )过程两部分； D2D发现是指当多个无线终端设备之间的距 离近到无线设备之间可以直接通信时， 彼此发现对方， D2D通信指两个无线 终端设备不通过核心网设备直接通信。
但是， 当前通信终端在进行 D2D发现时， 往往釆取持续在可用资源上发 送 D2D发现信号的机制来让邻近通信终端接收 D2D发现信号以确认通信终 端在邻近， 这种通信机制方式既导致通信终端电力的浪费， 又导致无线网络 通信资源的极大浪费， 而且可能导致不同通信终端所发送发现信号消息的冲
发明内容
本发明提供了一种终端直达通信中发现信号的发送方法、 通信终端及系 统，解决了当前终端直达通信中通信终端在可用资源上持续地发送 D2D发现 信号所导致通信资源浪费的问题。
本发明提供了一种终端直达通信中发现信号的发送方法， 在一个实施例 中， 该方法包括： 源终端获取网络侧设备与其他通信终端进行通信时的通信 参数； 源终端根据通信参数发送发现信号。
优选地， 上述实施例中的网络侧设备包括基站， 还包括移动管理实体和 / 或新增网元； 源终端获取网络侧设备与其他通信终端进行通信时的通信参数 的步骤为： 源终端通过移动管理实体和 /或新增网元获取基站向其他通信终端 发送寻呼信号时的通信参数， 通信参数包括基站向其他通信终端发送寻呼信 号时所使用子帧的子帧号、 该子帧所属寻呼帧的帧号及寻呼周期。
优选地， 上述实施例中的源终端获取基站向其他通信终端发送寻呼信号 时的通信参数的步骤为： 源终端选择目标通信终端； 源终端向基站发送终端 直达通信的发现请求， 该发现请求携带目标通信终端的标识信息； 源终端接 收基站反馈的响应信号， 响应信号携带有基站向目标通信终端发送寻呼信号 时的通信参数； 源终端提取响应信号中的通信参数。
优选地， 上述实施例中的源终端根据通信参数发送发现信号的步骤为： 源终端以寻呼周期为周期， 在基站向目标通信终端发送寻呼信号的帧号对应 送发现信号。
优选地， 上述实施例中的源终端根据通信参数发送发现信号的步骤为： 源终端以基站对通信终端既定的寻呼周期为周期， 在基站向通信终端发送寻 周期性的轮换发送发现信号。
优选地， 上述实施例中的周期性轮换发送发现信号的步骤为： 源终端在 自身和 /或网络侧设备的控制下，确定其发送发现信号的发送周期及发送数量, 并根据发送周期和发送数量发送发现信号。 同时， 本发明提供了一种通信终端， 在一个实施例中， 该通信终端包括 获取模块及发送模块； 其中， 获取模块设置为： 获取网络侧设备与其他通信 终端进行通信时的通信参数； 发送模块设置为： 根据获取模块获取到的通信 参数发送发现信号。
同时， 本发明也提供了一种用于终端直达通信的通信系统， 在一个实施 例中， 该终端发现系统包括至少一个本申请提供的通信终端作为源终端， 及 网络侧设备； 源终端设置为： 获取网络侧设备与其他通信终端进行通信时的 通信参数， 并根据通信参数发送发现信号。
通过本发明的实施， 在终端直达通信中发现信号的发送阶段， 源终端获 取到网络侧设备与其他通信终端进行通信的通信参数， 并根据该通信参数， 仅在网络侧设备向其他通信终端发送通信信号的同时发送发现信号， 在保证 其他通信终端可以接收到该发现信号的同时， 避免了通信资源的浪费， 加速 了终端直达通信的发现进程， 还节约了 D2D通信双端的电力。
附图概述
图 1为本发明一实施例提供的发现信号的发送方法的示意图； 图 2为本发明另一实施例提供的发现信号的发送方法的示意图； 图 3为本发明一实施例提供的通信系统的示意图；
图 4为图 3中源终端的一种示意图；
图 5为图 4中获取模块的一种示意图；
图 6为现有技术中终端发送发现信号的示意图；
图 7为本发明一实施例中终端发送发现信号的示意图；
图 8为本发明另一实施例中终端发送发现信号的示意图；
图 9为本发明另一实施例中终端发送发现信号的示意图；
图 10a为本发明另一实施例中终端发送发现信号的示意图；
图 10b为本发明另一实施例中终端发送发现信号的示意图； 图 10c为本发明另一实施例中终端发送发现信号的示意图。
本发明的较佳实施方式
下面通过具体实施方式结合附图的方式对本发明做出进一步的诠释说 明。
本发明下文实施例中提到的通信参数是指网络侧设备， 如基站等， 与通 信终端进行寻呼信号的发送与接收等通信时所使用的通信参数， 并非两个通 信终端进行 D2D通信时所使用的连接选项等参数；下文中的源终端是指本发 明提供的通信终端，其他通信终端可以是常规的通信终端或者支持 D2D通信 的通信终端或者本发明提供的通信终端。
图 1为本发明一实施例提供的 D2D通信中发现信号的发送方法的示意图; 由图 1可知，在一个实施例中，本发明提供的 D2D通信中发现信号的发送方 法包括以下步骤：
步骤 S101 :源终端获取网络侧设备与其他通信终端进行通信时的通信参 数。
源终端获取网络侧设备与其他通信终端进行通信时的通信参数的方式 有两种： 一种是通过网络侧设备来获取， 将在下文做详细说明； 另一种是根 据通信协议来获取， 因为网络侧设备与其他通信终端进行通信的通信周期是 既定的，如根据协议 3GPP/36.304 & 36.331可以获取到基站向通信终端发送寻 呼信号的默认寻呼周期有 4种类型（即 32、 64、 128、 256无线帧）和子帧位 置（FDD模式下为寻呼帧的 0、 4、 5、 9子帧位置, TDD模式下为寻呼帧的 0、 4、 5、 6 子帧位置） ， 源终端从中选择一个周期参数和各子帧位置参数， 按 照该选择的寻呼周期在子帧位置上， 轮换发送发现信号。
网络侧设备包括基站， 还包括移动管理实体（MME )和 /或新增网元， 该新增网元是指用于管理通信终端进行 D2D发现和 /或通信过程的新增网络 实体； 源终端获取网络侧设备与其他通信终端进行通信时的通信参数的步骤 具体为： 源终端获取基站向其他通信终端发送寻呼信号时的通信参数， 源终 端获取基站向其他通信终端发送寻呼信号时的通信参数的步骤具体的可以是: 基站将其自身存储的或通过移动管理实体（MME )和 /或新增网元获取 到的基站与其他目标通信终端的通信参数下发到源终端： 通信参数包括基站 向其他通信终端发送寻呼信号时所使用子帧的子帧号、 该子帧所属寻呼帧的 帧号及寻呼周期； 该实例是通过移动管理实体（MME )和 /或新增网元是直 接下发源终端发送发现信号是所需要的帧号、 子帧号及寻呼周期， 源终端不 需要另外进行计算；
基站将其自身存储的或通过移动管理实体（MME )和 /或新增网元获取 到的基站与其他目标通信终端的通信参数下发到源终端的方式还可以是： 移 动管理实体（MME )和 /或新增网元下发能够推导寻呼帧号、 子帧号及寻呼 周期的其他参数信息， 如通信终端的 UE— ID、 寻呼周期 T及寻呼机会数 nB 等信息参数到源终端 ,源终端需要根据这些信息参数进行计算获得寻呼帧号、 子帧号及寻呼周期； 在该实施例中， 源终端在接收到通信终端的 UE— ID、 寻 呼周期 T及寻呼机会数 nB之后,根据通信协议计算得到源终端发送发现信号 需要的基站向其他通信终端发送寻呼信号时所使用子帧的子帧号、 该子帧所 属寻呼帧的帧号及寻呼周期； 一个计算实例可以是， 设定通信模式为 FDD 模式， UE— ID为 135 , 寻呼周期 T为 128, 寻呼机会数 nB为 32, 可以依据 协议 3GPP36.304计算得出： 寻呼帧总数为 32, 进一步可以得出寻呼帧的偏 移位置为 28, 即无线帧偏移 28的位置为寻呼帧位置， 子帧位置为子帧号 9。
源终端获取基站向其他通信终端发送寻呼信号时的通信参数的步骤具 体的可以是： 源终端通过移动管理实体和 /或新增网元来获取基站向其他通信 终端发送寻呼信号时的通信参数。 该过程具体的可以是： 源终端发送用于请 求基站通信参数的请求消息到基站， 基站将该请求消息转发到移动管理实体 和 /或新增网元， 移动管理实体和 /或新增网元将其存储的该基站与其他通信 终端进行通信时所使用的通信参数添加到相应信号中通过基站发送到源终端。 步骤 S102: 源终端根据通信参数发送发现信号。
源终端根据通信参数获取到基站向其他通信终端发送寻呼信号的寻呼 位置及寻呼周期， 并在该寻呼位置以寻呼周期为发送周期与基站发送寻呼信 号的同时发送 D2D通信中的发现信号； 此时， 源终端仅需要在特定的寻呼资 源位置及时刻发送发现信号，而其他可以进行 D2D通信的通信终端也仅需要 在接收基站发送的寻呼信号的同时， 检测并接收发现信号， 降低了源终端及 接收终端的电力消耗。
图 2为本发明另一实施例提供的发现信号的发送方法的示意图； 由图 2 可知，在本实施例中，本发明提供的 D2D通信中发现信号的发送方法包括以 下步骤：
步骤 S201 : 源终端选择 D2D通信对象， 即目标通信终端。
源终端选择目标通信终端的方式可以是： 源终端从其存储的好友列表中 和 /或已知通信终端中选择至少一个通信终端作为目标通信终端。
步骤 S202: 源终端向基站发送终端直达通信的发现请求； 该发现请求中 携带了请求目标通信终端通信参数的字段。
当源终端确定目标通信终端的方式是源终端从其存储的好友列表中和 / 或已知通信终端中选择至少一个通信终端作为目标通信终端时， 源终端向基 站发送发现请求携带目标通信终端的标识信息； 该标识信息可以是目标通信 终端的电话号码、 名称、 IMEI等唯一的信息。
步骤 S203: 源终端接收基站反馈的响应信号， 响应信号中携带了目标通 信终端的通信参数。
当基站接收到携带有目标通信终端的标识信息的发现请求时， 提取其携 带的目标通信终端的标识信息， 并交由移动管理实体和 /或新增网元， 移动管 理实体和 /或新增网元根据标识信息查询基站向该标识信息对应的目标通信 终端发送寻呼信号的寻呼周期、 所使用寻呼资源位置的寻呼子帧的子帧号、 该子帧所属寻呼帧的帧号等， 或者 UE— ID、 寻呼周期 T和寻呼机会数 nB等 通信参数， 将查询到的基站向该目标通信终端发送寻呼信号时的通信参数添 加到响应信号中， 并反馈给发送该发现请求的源终端。
步骤 S204: 源终端提取响应信号中的通信参数。
步骤 S205: 源终端根据网络侧设备的通信参数发送发现信号。
当源终端提取到的通信参数包括有基站向其他通信终端发送寻呼信号 时所使用子帧的子帧号、 该子帧所属寻呼帧的帧号及寻呼周期的通信参数之 后， 在基站和 /或移动管理实体和 /或新增网元和 /或源终端自身的控制下发送 发现信号， 具体的可以是： 源终端以寻呼周期为周期， 在基站向其他通信终 上， 周期性的轮换发送发现信号。
当源终端提取到的通信参数为 UE— ID、 寻呼周期 T和寻呼机会数 nB等 通信参数时， 则根据协议计算基站向其他通信终端发送寻呼信号时所使用子 帧的子帧号、 该子帧所属寻呼帧的帧号及寻呼周期的通信参数， 在计算得到 基站向其他通信终端发送寻呼信号时所使用子帧的子帧号、 该子帧所属寻呼 帧的帧号及寻呼周期的通信参数之后， 执行前文的步骤。
周期性的轮换发送发现信号的发送可以是源终端在基站和 /或移动管理 实体和 /或新增网元和 /或源终端自身的控制下确定发送发现信号的发送周期 及发送数量， 具体的可以是： 基站和 /或移动管理实体和 /或新增网元和 /或源 终端自身根据网络运行负载或者源终端的优先级， 确定源终端发送发现信号 的发送周期及发送数量。
步骤 S206: 目标通信终端接收到发现信号， 进入 D2D响应流程。
其他通信终端在接收到该源终端发送的发现信号之后， 向基站或源终端 反馈响应信息， 以完成 D2D发现过程， 并根据发现信号所携带的两个通信终 端进行 D2D通信所需要的参数进行 D2D通信。
图 3为本发明一实施例提供的通信系统的示意图； 由图 3可知， 在一个 实施例中，本发明提供的通信系统 3包括源终端 31及网络侧设备 32;其中， 源终端 31也是本发明提供的通信终端， 用于获取网络侧设备 32与其他移动 终端进行通信时的通信参数， 并根据通信参数发送发现信号。
在另一个实施例中， 图 3所示实施例中的网络侧设备 32 包括基站， 还 包括移动管理实体和 /或新增网元； 此时， 源终端 31用于通过移动管理实体 和 /或新增网元获取基站向其他移动终端发送寻呼信号时的通信参数，通信参 数包括基站向其他移动终端发送寻呼信号时所使用子帧的子帧号、 该子帧所 属寻呼帧的帧号及寻呼周期。
可以预见的是， 图 3所示实施例中的网络侧设备 32并不是必须的， 源 终端 31可以通过网络侧设备 32获取目标通信终端的通信参数， 也可以通过 其他的方式， 如标准的寻呼通信协议等方式， 来获取通信参数。
图 4为图 3中的源终端的一种示意图； 由图 4可知， 在该实施例中， 本 发明提供的通信终端 31包括相互连接的获取模块 311及发送模块 312;其中， 获取模块 311用于获取网络侧设备与其他通信终端进行通信时的通信参 数； 获取的方式可以是读取源终端 31 自身内置和 /或存储的标准的寻呼通信 协议获取， 也可以从网络侧设备获得；
发送模块 312用于根据获取模块 311获取到的通信参数发送发现信号。 在其他实施例中， 若网络侧设备 32包括基站， 还包括移动管理实体和 / 或新增网元；上述实施例中的获取模块 311用于通过移动管理实体和 /或新增 网元获取基站向其他通信终端发送寻呼信号时的通信参数， 通信参数包括基 站向其他通信终端发送寻呼信号时所使用子帧的子帧号、 该子帧所属寻呼帧 的帧号及寻呼周期， 也可以是 UE— ID、 寻呼周期 T和寻呼机会数 nB等通信 参数。 图 5为图 4中获取模块的一种示意图； 由图 5可知， 在本实施例中， 图 4所示实施例中的获取模块 311包括相互连接的选择子模块 3111、 发送子模 块 3112、 接收子模块 3113及提取子模块 3114, 此时：
选择子模块 3111用于源终端 31的用户选择目标通信终端； 源终端用户 选择目标通信终端的方式可以是源终端用户从其存储的好友列表中和 /或已 知通信终端中选择至少一个通信终端作为目标通信终端， 进而实现单个或多 个目标通信终端的同时发现功能；
发送子模块 3112用于向基站等网络侧设备 32发送终端直达通信的发现 请求，该发现请求携带目标通信终端的标识信息； 当选择子模块 3111选择目 标通信终端的方式是源终端从其存储的好友列表中和 /或已知通信终端中选 择至少一个通信终端作为目标通信终端时，发送子模块 3112向基站发送发现 请求携带目标通信终端的标识信息， 该标识信息可以是目标通信终端的电话 号码、 终端的 UE— ID或 IMEI等唯一标识终端身份的信息；
接收子模块 3113用于接收基站等网络侧设备 32反馈的响应信号； 响应 信号携带有基站向目标通信终端发送寻呼信号时的通信参数； 当基站接收到 携带有目标通信终端的标识信息的发现请求时， 提取其携带的目标通信终端 的标识信息， 交由移动管理实体和 /或新增网元， 移动管理实体和 /或新增网 元根据标识信息查询到对应的目标通信终端， 将查询到的基站向该目标通信 终端发送寻呼信号时的通信参数添加到响应信号中， 并反馈给发送该发现请 求的源终端；
提取子模块 3114 用于提取响应信号中的通信参数， 此时所提取的是基 站当网络侧设备与选择子模块 3111 所选择的目标通信终端进行通信时的通 信参数。
可以预见的是， 图 4所示实施例中的选择子模块 3111并非是必须的， 当不存在选择子模块 3111时，可以将目标通信终端设定为与基站进行通信的、 且在源终端的 D2D通信范围内的所有通信终端。
在图 5所示的实施例中， 发送模块 312用于以寻呼周期为周期， 在基站 向其他通信终端发送寻呼信号的帧号对应的寻呼帧中的子帧号对应的子帧或 邻近子帧的所有资源位置上， 周期性的轮换发送发现信号。
在其他实施例中， 发送模块 312还用于以基站对通信终端既定的寻呼周 期为周期， 即取 4个默认周期中的一个， 在基站向通信终端发送寻呼信号的 性的轮换发送发现信号。
在其他实施例中，发送模块 312还用于在源终端自身和 /或网络侧设备的 控制下， 确定其发送发现信号的发送周期及发送数量， 并根据发送周期和发 送数量发送发现信号。
下面结合图 2至图 10c、 背景技术及应用实例来进一步的说明本发明所 提供的终端直达通信中发现信号发送方法中的源终端根据获取到的通信参数 发送发现信号的方法， 图 6至图 10c中黑色背景白色字体所代表的子帧号为 源终端可能用来发送发现信号的资源位置。
通信终端与基站进行通信时， 是基站是通过特定寻呼帧中的特定子帧
(一个寻呼帧包括 10个子帧， 编号为 0、 1 9 ) 来发送寻呼信号的， 而 LTE技术又分为 TDD (时分双工 )及 FDD (频分双工 ) 两大方向， 现举 例针对 FDD方向的 LTE技术来说明 (对于 FDD模式，基站是通过寻呼帧中 的编号为" 0、 4、 5、 9"的子帧来进行对通信终端的寻呼； 对 TDD模式， 基站 是通过寻呼帧中的编号为" 0、 1、 5、 6"的子帧来进行对通信终端的寻呼） ， 并做如下假定： 源终端仅有一个， 基站也仅有一个， 目标通信终端的个数不 定； 下面分别对目标通信终端个数不同的情况下做说明：
图 6为现有技术中的通信终端发送发现信号的示意图； 由图 6可知， 在 现有技术中， 源通信终端发现信号的发送可能是在无线帧的任意子帧上进行 连续发送， 由于目标通信终端可能处于 IDLE (空闲）状态， 这种发送发现 信号的机制会造成处于 IDLE (空闲）状态的目标通信终端不断地检测接收 发现信号， 起不到周期性接收发现信号的功效， 造成双端终端的电力浪费， 同时造成网络无线资源的浪费。
图 7为本发明一实施例中终端发送发现信号的示意图； 此时， 图 3所示 实施例中的通信系统还包括 1个目标通信终端， 此时， 为源终端针对一个特 定的目标通信终端发送发现信号， 通过图 2所示实施例的实施， 根据获取的 通信参数知道该目标通信终端处于 IDLE状态， 利用获取得到的基站向该目 标通信终端发送寻呼信号时所用的寻呼帧及子帧资源位置， 或者通过目标通 信终端的 UE— ID信息、 其所处的 DRX周期 T和寻呼机会数等参数计算， 确 定了基站向该目标通信终端发送寻呼信号的通信参数为帧号为" PF ( i ) "的寻 呼帧中的子帧号为" 0"的子帧；则源终端仅在图 7所示的位置周期性的发送发 现信号； 目标通信终端仅在接收基站发送的寻呼信号的同时， 检测并接收发 现信号。
图 8为本发明另一实施例中终端发送发现信号的示意图； 此时， 图 3所 示实施例中的通信系统还包括 4个目标通信终端， 由于通过图 2所示实施例 的实施， 确定了基站向这些目标通信终端发送寻呼信号时的通信参数分别为 帧号为 "PF ( i ) "的寻呼帧中的子帧号为" 0"、 "4"、 "5"、 "9"的子帧； 源终端 仅在图 8所示的位置周期性的发送发现信号； 目标通信终端仅在接收基站发 送的寻呼信号的同时， 检测并接收发现信号。
图 9为本发明另一实施例中终端发送发现信号的示意图； 此时， 图 3所 示实施例中的通信系统还包括 N个通信终端， 由于通过图 2所示实施例的实 施， 确定了基站向这些目标通信终端发送寻呼信号的通信参数分别为帧号为 "PF ( 1 ) "、 "PF ( 2 ) " "PF ( N ) "的寻呼帧中的子帧号为" 0"的子 帧； 源终端仅在图 9所示的位置周期性的发送发现信号； 目标通信终端仅在 接收基站发送的寻呼信号的同时， 检测并接收发现信号。
图 10a、 10b、 10c为本发明另一实施例中终端发送发现信号的示意图； 此时， 图 3所示实施例中的通信系统还包括 N个通信终端， 且未知晓各 UE 的 UE— ID等信息，依据基站寻呼终端所用寻呼周期进行周期性遍历待发现组 内空闲状态终端寻呼帧及子帧的位置。 由于通过图 2所示实施例的实施， 确 定了基站向这些通信终端发送寻呼信号的通信参数分别为帧号为" PF ( 1 ) "、
"PF ( 2 ) " "PF ( i ) "的寻呼帧中的子帧号为" 0"、 "4"、 "5"、 "9"的 子帧； 由于这么目标通信终端的通信参数比较混乱， 源终端在源终端自身和 / 或网络侧设备的控制下， 确定其发送发现信号的发送周期及发送数量， 并根 据发送周期和发送数量发送发现信号， 例如可以按照图 10a、 10b、 10c所示 的方式周期性的发送发现信号； 通信终端仅在接收基站发送的寻呼信号的同 时， 检测并接收源终端发送的发现信号； 具体的为：
参照图 10a的方式： 源终端在基站的控制下选择在一个寻呼周期里选择 一个或多个（图 10a显示为一个寻呼帧）寻呼帧下的所有子帧进行发送发现 信号的方式， 具体的为； 源终端在下一个周期里选择另外一个或多个寻呼帧 下的所有子帧发送发现信号； 周期地遍历完成源终端所有的空闲状态的目标 通信终端的寻呼帧及子帧的位置发送发现信号； 目标通信终端依据自己的寻 呼周期及通信参数， 在相应的寻呼帧及子帧位置上接收发现信号， 忽略非自 己寻呼帧及子帧上的发现信号。
参照图 10b的方式： 源终端在基站的控制下选择在一个寻呼周期里选择 所有寻呼帧的一个或多个子帧 （图 10b为一个寻呼周期里所有寻呼帧的一个 子帧）发送发现信号的方式， 具体的为； 源终端在下一个周期里选择所有寻 呼帧的另外一个或多个子帧发送发现信号； 周期地遍历完成源终端所有的空 闲状态的目标通信终端的寻呼帧及子帧的位置发送发现信号； 目标通信终端 依据自己的寻呼周期及通信参数， 在相应的寻呼帧及子帧位置上接收发现信 号， 忽略非自己寻呼帧及子帧上的发现信号。
参照图 10c的方式： 源终端在基站的控制下选择在一个寻呼周期里选择 一个或多个寻呼帧的一个或多个子帧 （图 10c显示为一个寻呼周期里三个寻 呼帧的两个子帧）进行发送发现信号的方式， 具体的为； 源终端在下一个周 期里选择另外的寻呼帧的一个或多个子帧发送发现信号； 周期地遍历完成源 终端所有的空闲状态的目标通信终端的寻呼帧及子帧的位置发送发现信号； 目标通信终端依据自己的寻呼周期及通信参数， 在相应的寻呼帧及子帧位置 上接收发现信号， 忽略非自己寻呼帧及子帧上的发现信号。
以上仅是本发明的具体实施方式而已， 并非对本发明做任何形式上的限
变化或修饰， 均仍属于本发明技术方案的保护范围。
工业实用性
通过本发明的实施， 在终端直达通信中发现信号的发送阶段， 源终端获 取到网络侧设备与其他通信终端进行通信的通信参数， 并根据该通信参数， 仅在网络侧设备向其他通信终端发送通信信号的同时发送发现信号， 在保证 其他通信终端可以接收到该发现信号的同时， 避免了源终端在所有无线帧上 进行发送发现信号所造成的通信资源的浪费 , 降低了通信网络的通信负担； 同时， 由于源终端和其他通信终端仅在基站发送寻呼信号的同时发送 /接收发 现信号， 节省了通信终端的电量， 还加快了目标通信终端与源终端的发现速 率， 增加了用户的使用体验。

Claims

权 利 要 求 书
1. 一种终端直达通信中发现信号的发送方法， 包括：
源终端获取网络侧设备与其他通信终端进行通信时的通信参数； 所述源终端根据所述通信参数发送发现信号。
2. 如权利要求 1 所述的发现信号的发送方法， 其中， 所述网络侧设备 包括基站， 还包括移动管理实体和 /或新增网元； 所述源终端获取网络侧设备 与其他通信终端进行通信时的通信参数的步骤为： 所述源终端通过所述移动 管理实体和 /或新增网元获取所述基站向其他通信终端发送寻呼信号时的通 信参数， 所述通信参数包括所述基站向其他通信终端发送寻呼信号时所使用 子帧的子帧号、 该子帧所属寻呼帧的帧号及寻呼周期。
3. 如权利要求 2 所述的发现信号的发送方法， 其中， 所述源终端获取 所述基站向其他通信终端发送寻呼信号时的通信参数的步骤为：
所述源终端选择目标通信终端；
所述源终端向所述基站发送终端直达通信的发现请求； 所述发现请求携 带目标通信终端的标识信息；
所述源终端接收所述基站反馈的响应信号； 所述响应信号携带有所述基 站向所述目标通信终端发送寻呼信号时的通信参数；
所述源终端提取所述响应信号中的通信参数。
4. 如权利要求 3 所述的发现信号的发送方法， 其中， 所述源终端根据 所述通信参数发送发现信号的步骤为： 所述源终端以寻呼周期为周期， 在所 述基站向所述目标通信终端发送寻呼信号的所述帧号对应的寻呼帧中的所述 子帧号对应的子帧或邻近子帧的资源位置上， 周期性的轮换发送发现信号。
5. 如权利要求 2 所述的发现信号的发送方法， 其中， 所述源终端根据 所述通信参数发送发现信号的步骤为： 源终端以基站对通信终端既定的寻呼 周期为周期， 在基站向通信终端发送寻呼信号的帧号对应的寻呼帧中的子帧 号对应的子帧或邻近子帧的资源位置上， 周期性的轮换发送发现信号。
6. 如权利要求 4或 5所述的发现信号的发送方法， 其中， 所述周期性 轮换发送发现信号的步骤为： 源终端在自身和 /或网络侧设备的控制下， 确定 其发送发现信号的发送周期及发送数量， 并根据发送周期和发送数量发送发 现信号。
7. 一种通信终端， 包括获取模块及发送模块； 其中，
所述获取模块设置为： 获取网络侧设备与其他通信终端进行通信时的通 信参数；
所述发送模块设置为： 根据所述获取模块获取到的通信参数发送发现信 号。
8. 如权利要求 7 所述的通信终端， 其中， 所述网络侧设备包括基站， 还包括移动管理实体和 /或新增网元； 所述获取模块设置为： 通过所述移动管 理实体和 /或新增网元获取所述基站向其他通信终端发送寻呼信号时的通信 参数， 所述通信参数包括所述基站向其他通信终端发送寻呼信号时所使用子 帧的子帧号、 该子帧所属寻呼帧的帧号及寻呼周期。
9. 如权利要求 8 所述的通信终端， 其中， 所述获取模块包括选择子模 块、 发送子模块、 接收子模块及提取子模块； 其中：
所述选择子模块设置为： 选择目标通信终端；
所述发送子模块还设置为： 向所述基站发送终端直达通信的发现请求； 所述发现请求携带目标通信终端的标识信息；
所述接收子模块还设置为： 接收所述基站反馈的响应信号； 所述响应信 号携带有所述基站向所述目标通信终端发送寻呼信号时的通信参数；
所述提取子模块还设置为： 提取所述响应信号中的通信参数。
10. 如权利要求 9所述的通信终端， 其中， 所述发送模块还设置为： 以 寻呼周期为周期， 在所述基站向所述目标通信终端发送寻呼信号的所述帧号 的轮换发送发现信号。
11. 如权利要求 8所述的通信终端， 其中， 所述发送模块还设置为： 以 基站对通信终端既定的寻呼周期为周期， 在基站向通信终端发送寻呼信号的 的轮换发送发现信号。
12. 如权利要求 10或 11所述的通信终端， 其中， 所述发送模块还设置 为： 在源终端自身和 /或网络侧设备的控制下， 确定其发送发现信号的发送周 期及发送数量， 并根据发送周期和发送数量发送发现信号。
13. 一种通信系统， 包括如权利要求 7至 12任一项所述的通信终端作 为源终端、 及网络侧设备； 所述源终端设置为： 获取所述网络侧设备与其他 通信终端进行通信时的通信参数， 并根据所述通信参数发送发现信号。
14. 如权利要求 13所述的通信系统，其中，所述网络侧设备包括基站， 还包括移动管理实体和 /或新增网元； 所述源终端设置为： 通过所述移动管理 实体和 /或新增网元获取所述基站向其他通信终端发送寻呼信号时的通信参 数， 所述通信参数包括所述基站向其他通信终端发送寻呼信号时所使用子帧 的子帧号、 该子帧所属寻呼帧的帧号及寻呼周期。
PCT/CN2013/087500 2013-01-18 2013-11-20 终端直达通信中发现信号的发送方法、通信终端及系统 WO2014110938A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310019971.6A CN103945497B (zh) 2013-01-18 2013-01-18 终端直达通信中发现信号的发送方法、通信终端及系统
CN201310019971.6 2013-01-18

Publications (1)

Publication Number Publication Date
WO2014110938A1 true WO2014110938A1 (zh) 2014-07-24

Family

ID=51192921

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/087500 WO2014110938A1 (zh) 2013-01-18 2013-11-20 终端直达通信中发现信号的发送方法、通信终端及系统

Country Status (2)

Country Link
CN (1) CN103945497B (zh)
WO (1) WO2014110938A1 (zh)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105376869B (zh) * 2014-08-22 2020-04-03 中兴通讯股份有限公司 一种在非授权载波上发送发现信号的方法、系统及接入点
US20180007528A1 (en) * 2015-01-14 2018-01-04 Nokia Solutions And Networks Oy Method, apparatus and system
WO2016161623A1 (zh) * 2015-04-10 2016-10-13 富士通株式会社 发现信号的传输方法、装置以及通信系统
US10075930B2 (en) * 2015-05-04 2018-09-11 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for transmitting device-to-device (D2D) synchronization signals
CN104936132B (zh) * 2015-05-29 2019-12-06 Oppo广东移动通信有限公司 机器类型通信的方法、终端以及基站
CN106550343B (zh) * 2015-09-21 2020-11-10 华为技术有限公司 端到端通信站点发现方法、站点及接入点
US10667200B2 (en) 2015-12-16 2020-05-26 Huawei Technologies Co., Ltd. User access method and user equipment
CN110167108B (zh) * 2018-02-13 2021-01-29 华为技术有限公司 信号传输的方法和装置
WO2020042180A1 (zh) * 2018-08-31 2020-03-05 华为技术有限公司 参考信号接收与发送方法、设备及系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101453788A (zh) * 2007-12-03 2009-06-10 华为技术有限公司 确定寻呼时刻的方法及装置
US20110140846A1 (en) * 2009-12-11 2011-06-16 Qualcomm Incorporated Apparatus and method for network-initiated attachment and registration-less paging
CN102547984A (zh) * 2012-02-23 2012-07-04 华为技术有限公司 一种设备到设备通信中寻呼的方法及装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101453788A (zh) * 2007-12-03 2009-06-10 华为技术有限公司 确定寻呼时刻的方法及装置
US20110140846A1 (en) * 2009-12-11 2011-06-16 Qualcomm Incorporated Apparatus and method for network-initiated attachment and registration-less paging
CN102547984A (zh) * 2012-02-23 2012-07-04 华为技术有限公司 一种设备到设备通信中寻呼的方法及装置

Also Published As

Publication number Publication date
CN103945497A (zh) 2014-07-23
CN103945497B (zh) 2018-01-23

Similar Documents

Publication Publication Date Title
WO2014110938A1 (zh) 终端直达通信中发现信号的发送方法、通信终端及系统
CN105379406B (zh) 一种设备到设备d2d通信中的信号传输方法及装置
KR101405685B1 (ko) 그룹 기반의 머신-투-머신 통신
WO2017185867A1 (zh) 一种进行业务传输的方法和终端
CN102651908B (zh) 一种传输数据的方法及设备
US11064437B2 (en) Power saving for wireless device
WO2014044081A1 (zh) 信号及配置信息发送和终端发现方法与设备
KR102005537B1 (ko) Gas 프로토콜을 이용한 단말의 서비스 탐색 방법 및 장치
WO2013155411A1 (en) Small data communications in a wireless communication network
US9125026B2 (en) Method for receiving multicast data in wireless communication system and M2M device therefor
TWI489901B (zh) 實現用戶設備與外部網路之間通訊之方法及系統
WO2018137457A1 (zh) 一种寻呼优化的方法和装置
US11218961B2 (en) Power saving for wireless device
WO2013127304A1 (zh) 下行数据传输方法及相关设备和通信系统
CN102316528B (zh) 基于网络共享资源管理的方法及系统
WO2014086018A1 (zh) 寻呼方法和设备
CN116491218A (zh) 多sim用户装备的rrc状态与基站的同步
TW201640835A (zh) 在無線通訊系統中管理不連續接收之方法及相關無線通訊系統
WO2020181943A1 (zh) 一种请求系统信息的方法及设备
US20230337319A1 (en) Methods, devices, and systems for configuring sidelink drx
US20170019749A1 (en) Service control system, user apparatus, and service control method
WO2022127777A1 (zh) 一种通信方法及通信装置
WO2014079313A1 (zh) 一种确定用户设备之间邻近关系的方法、设备及通信系统
WO2014121599A1 (zh) 传递蜂窝网络负荷信息的方法和相关设备
JP2023524889A (ja) 通信方法及び装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13871889

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13871889

Country of ref document: EP

Kind code of ref document: A1