WO2018170896A1 - 一种指示信息的传输方法和装置 - Google Patents

一种指示信息的传输方法和装置 Download PDF

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Publication number
WO2018170896A1
WO2018170896A1 PCT/CN2017/078113 CN2017078113W WO2018170896A1 WO 2018170896 A1 WO2018170896 A1 WO 2018170896A1 CN 2017078113 W CN2017078113 W CN 2017078113W WO 2018170896 A1 WO2018170896 A1 WO 2018170896A1
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WIPO (PCT)
Prior art keywords
downlink control
control signal
time period
indication information
terminal device
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2017/078113
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English (en)
French (fr)
Inventor
汲桐
金哲
张维良
铁晓磊
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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 Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to EP17901371.9A priority Critical patent/EP3595367A4/en
Priority to BR112019019947A priority patent/BR112019019947A2/pt
Priority to CN202111162219.8A priority patent/CN114071677B/zh
Priority to PCT/CN2017/078113 priority patent/WO2018170896A1/zh
Priority to CN201780088785.4A priority patent/CN110447268B/zh
Priority to JP2019552561A priority patent/JP2020511903A/ja
Publication of WO2018170896A1 publication Critical patent/WO2018170896A1/zh
Priority to US16/579,311 priority patent/US11057916B2/en
Anticipated expiration legal-status Critical
Priority to JP2022062849A priority patent/JP7389164B2/ja
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • H04W52/0235—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal where the received signal is a power saving command
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/005—Transmission of information for alerting of incoming communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0466—Wireless resource allocation based on the type of the allocated resource the resource being a scrambling code
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to the field of communications, and in particular, to a method and an apparatus for transmitting indication information.
  • MTC Machine Type Communication
  • M2M Machine To Machine
  • IoT Intent of Things
  • a cellular IoT communication system a communication system based on an existing cellular architecture, which is called a cellular IoT.
  • a very high data transmission rate is generally not required between the MTC base station and the terminal device, but a large coverage area is required.
  • the terminal equipment of this type has high requirements on power consumption and equipment cost, and thus the capability of the terminal equipment is often limited.
  • the Narrow Band Internet of Things is a feature in the Long Term Evolution (LTE) Release 13 (Release-13), which is mainly targeted at some IoT scenarios.
  • the physical downlink control channel (PDCCH) carries the scheduling information of the downlink data, and is used to help the terminal device acquire the configuration information of the physical downlink shared channel (PDSCH) so as to be able to receive. Relevant information on the PDSCH.
  • the terminal When the PDCCH is transmitted, it is generally based on the form of the search space, that is, the terminal needs to listen to the search space to acquire the target PDCCH signal. However, there are often no valid PDCCHs in the search space. However, the terminal device still needs to monitor the PDCCH signal, which causes waste of power consumption of the terminal device.
  • Embodiments of the present application provide a method and apparatus for transmitting indication information.
  • the application provides a method for transmitting indication information, including: a network device generating indication information, where the indication information is used to indicate a presence of a downlink control signal in a first time period; and the network device is to a terminal
  • the device sends the indication information, where the presence includes at least one of: the downlink control signal is present in the first time period; and the downlink control signal does not exist in the first time period; a time resource location of the downlink control signal in the first time period; a frequency resource location of the downlink control signal in the first time period; and a downlink control signal in the first time period
  • the number of transmissions; the number of repetitions of the downlink control signal in the first time period; the transmission duration of the downlink control signal in the first time period; the downlink control signal is in the first time period Signal format.
  • a time resource position of the downlink control signal in the first time period is a start position of the downlink control signal in a first time period or the downlink control An alternate number of signals within the first time period.
  • the starting position of the first time period is at a first time position after the end of the indication information transmission, and the length of the first time period is a positive integer number of downlinks Control channel period.
  • the interval between the first time position and the last subframe of the indication information transmission is determined according to a system message or a high layer signaling indication and/or a preset rule.
  • the downlink control signal is a random access radio network temporary identifier, a cell radio network temporary identifier, a temporary cell radio network temporary identifier, a group radio network temporary identifier, and a single cell radio network.
  • Temporary identification or paging wireless network temporary identification scrambled.
  • the configuration information of the indication information is determined according to a system message or other high layer signaling indication and/or a preset rule.
  • the configuration information of the indication information is indicated in a first message, where the first message includes configuration information of a downlink control signal search space indicated by the indication information.
  • the present application provides a method for transmitting indication information, including: receiving, by a terminal device, indication information sent by a network device, where the indication information is used to indicate a presence of a downlink control signal in a first time period; Determining, by the terminal device, whether to monitor the downlink control signal according to the indication information, where the presence condition includes at least one of: the downlink control signal is present in the first time period; the downlink control signal Not present in the first time period; a time resource location of the downlink control signal in the first time period; a frequency resource location of the downlink control signal in the first time period; the downlink a number of transmissions of the control signal in the first time period; a number of repetitions of the downlink control signal in the first time period; a transmission time length of the downlink control signal in the first time period; The signal format of the downlink control signal during the first time period.
  • the determining, by the terminal device, whether to monitor the downlink control signal according to the indication information includes: when the indication information indicates that the downlink control signal is within a first time period
  • the terminal device monitors the downlink control signal in the first time period: the downlink control signal is present in the first time period; the downlink control signal a time resource location in the first time period; a frequency resource location of the downlink control signal in the first time period; a number of transmissions of the downlink control signal in the first time period; a repetition quantity of the downlink control signal in the first time period; a transmission duration of the downlink control signal in the first time period; a signal format of the downlink control signal in the first time period;
  • the indication information indicates that the downlink control signal does not exist in the first time period
  • the terminal device does not monitor the downlink control signal in the first time period.
  • a time resource location of the downlink control signal in the first time period is a start position of the downlink control signal in a first time period or the downlink control An alternate number of signals within the first time period.
  • the starting position of the first time period is at a first time position after the end of the indication information transmission, and the length of the first time period is a positive integer number of downlinks Control channel period.
  • the interval between the first time position and the last subframe of the indication information transmission is determined according to a system message or a high layer signaling indication and/or a preset rule.
  • the downlink control signal is a random access wireless network temporary identifier, a cell wireless network temporary identifier, a temporary cell wireless network temporary identifier, a group wireless network temporary identifier, and a single-cell wireless network. Temporary identification or paging wireless network temporary identification scrambled.
  • the configuration information of the indication information is determined according to a system message or other high layer signaling indication and/or a preset rule.
  • the configuration information of the indication information is indicated in a first message, where the first message includes configuration information of a downlink control signal search space indicated by the indication information.
  • the application provides a network device, including: a processing unit, configured to generate indication information, where the indication information is used to indicate a presence of a downlink control signal in a first time period; and a sending unit, configured to use the terminal
  • the device sends the indication information, where the presence includes at least one of: the downlink control signal is present in the first time period; and the downlink control signal does not exist in the first time period; a time resource location of the downlink control signal in the first time period; a frequency resource location of the downlink control signal in the first time period; and a downlink control signal in the first time period
  • the number of transmissions; the number of repetitions of the downlink control signal in the first time period; the transmission duration of the downlink control signal in the first time period; the downlink control signal is in the first time period Signal format.
  • a time resource location of the downlink control signal in the first time period is a start position of the downlink control signal in a first time period or the downlink control An alternate number of signals within the first time period.
  • the starting position of the first time period is at a first time position after the end of the indication information transmission, and the length of the first time period is a positive integer number of downlinks Control channel period.
  • the interval between the first time position and the last subframe of the indication information transmission is determined according to a system message or a high layer signaling indication and/or a preset rule.
  • the downlink control signal is a random access wireless network temporary identifier, a cell wireless network temporary identifier, a temporary cell wireless network temporary identifier, a group wireless network temporary identifier, and a single-cell wireless network. Temporary identification or paging wireless network temporary identification scrambled.
  • the configuration information of the indication information is determined according to a system message or other high layer signaling indication and/or a preset rule.
  • the configuration information of the indication information is indicated in a first message, where the first message includes configuration information of a downlink control signal search space indicated by the indication information.
  • the application provides a terminal device, including: a receiving unit, configured to receive indication information sent by a network device, where the indication information is used to indicate a presence of a downlink control signal in a first time period; a unit, configured to control, according to the indication information, whether the receiving unit monitors the downlink control signal, where the presence includes at least one of: the downlink control signal is present in the first time period; The downlink control signal does not exist in the first time period; the time resource position of the downlink control signal in the first time period; the frequency resource location of the downlink control signal in the first time period The number of transmissions of the downlink control signal in the first time period; the number of repetitions of the downlink control signal in the first time period; and the transmission of the downlink control signal in the first time period Duration; a signal format of the downlink control signal during the first time period.
  • the processing unit controls whether the receiving unit monitors the downlink control signal, includes: when the indication information indicates that the downlink control signal is first When the presence in the time period includes at least one of the following, the processing unit controls the receiving unit to monitor the downlink control signal in the first time period: the downlink control signal is in the first time a time resource in the first time period; the downlink control signal is in the first time period a frequency resource location; a number of transmissions of the downlink control signal in the first time period; a repetition number of the downlink control signal in the first time period; the downlink control signal is in the first time period a transmission duration within the first time period; the processing unit controls the The receiving unit does not monitor the downlink control signal during the first time period.
  • a time resource location of the downlink control signal in the first time period is a start position of the downlink control signal in a first time period or the downlink control An alternate number of signals within the first time period.
  • the starting position of the first time period is at a first time position after the end of the indication information transmission, and the length of the first time period is a positive integer number of downlinks Control channel period.
  • the interval between the first time position and the last subframe of the indication information transmission is determined according to a system message or a high layer signaling indication and/or a preset rule.
  • the downlink control signal is a temporary access wireless network temporary identifier, a cell wireless network temporary identifier, a temporary cell wireless network temporary identifier, a group wireless network temporary identifier, and a single-cell wireless network. Temporary identification or paging wireless network temporary identification scrambled.
  • the configuration information of the indication information is determined according to a system message or other high layer signaling indication and/or a preset rule.
  • the configuration information of the indication information is indicated in a first message, where the first message includes configuration information of a downlink control signal search space indicated by the indication information.
  • the present application provides a computer readable storage medium comprising instructions, when executed on a computer, causing a computer to perform the first aspect, the second aspect, any possible implementation of the first aspect, or any of the second aspects Possible implementation.
  • the network device sends the indication information to the terminal device to indicate whether the PDCCH signal exists and the configuration information is transmitted, so that the terminal device can be more targeted before monitoring the PDCCH signal, according to the indication information. Instructing to monitor the downlink control signal saves the power consumption of detecting and monitoring the downlink control signal. At the same time, because the number of bits carried by the indication information is small, the terminal device can complete the reception of the indication information at a lower power consumption cost, thereby further saving the power consumption of the terminal.
  • FIG. 1 is a schematic structural diagram of a wireless communication system according to an embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a method for transmitting indication information according to an embodiment of the present application
  • FIG. 3 is a schematic structural diagram of a network device according to an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a network device according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • the terminal device involved in the embodiment of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem.
  • the wireless terminal can communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and with a mobile terminal
  • RAN Radio Access Network
  • the computers for example, can be portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile devices that exchange language and/or data with the wireless access network.
  • a wireless terminal may also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, or an access point.
  • Remote Terminal Access Terminal, User Terminal, User Agent, User Device, or User Equipment.
  • a network device for example, an access point
  • the network device may refer to a device in an access network that communicates with a wireless terminal through one or more sectors on an air interface.
  • the network device can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network.
  • IP Internet Protocol
  • Network devices can also coordinate attribute management of air interfaces.
  • the network device may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station in LTE (eNB or e-NodeB, evolutional Node B) ), this application is not limited.
  • LTE Long Term Evolution
  • GSM Global System for Mobile Communication
  • UMTS Universal Mobile Telecommunications System
  • CDMA Code Division Multiple Access
  • various transmission and reception points such as a network device, such as a base station and a wireless local area network access point, provide the terminal device with an access service or a non-distribution under the licensed spectrum. Access services under the licensed spectrum.
  • the terminal device and the network device transmit various data, such as control signaling or service data, in accordance with a protocol layer on the uplink and the downlink.
  • the control signaling is mainly transmitted on the control channel
  • the service data is mainly transmitted on the traffic channel.
  • protocol layers include a physical layer, a Media Access Control (MAC) layer, and a radio resource control (RRC) layer. Regardless of the data transmitted at which layer, the final bearer is transmitted over the physical layer in the wireless space by at least one physical antenna.
  • MAC Media Access Control
  • RRC radio resource control
  • an embodiment of the present application provides a method for transmitting indication information, so that the terminal device completes monitoring of the downlink control channel with lower power consumption.
  • the method for transmitting the indication information may be applied to the network architecture shown in FIG. 1, and the method includes the following steps:
  • Step 201 The network device generates indication information, where the indication information is used to indicate the existence of the downlink control signal in the first time period.
  • the presence of the downlink control signal in the first time period may include at least one of the following:
  • the signal format of the downlink control signal during the first time period is the signal format of the downlink control signal during the first time period.
  • the presence of the downlink control signal PDCCH in the first time period includes indicating that the downlink control signal exists or does not exist in the first time period.
  • the network device sends the PDCCH signal to the terminal device through the Type 1 Common Search Space (Type1-CSS).
  • the PDCCH signal is generally scrambled by a Paging Radio Network Temporary Identity (PRNTI).
  • PRNTI Radio Network Temporary Identity
  • the method of scrambling the PDCCH by using the PRNTI may be to perform scrambling of the Cyclic Redundancy Check (CRC) of the PDCCH by using the PRNTI.
  • CRC Cyclic Redundancy Check
  • RNTI Radio Network Temporary Identity
  • the location of the PDCCH that the network device sends the scheduling paging signal is called a paging opportunity (Paging Occasion, PO).
  • the PDCCH signal may or may not exist. Because the PDCCH signal exists when the network device needs to page one or several terminal devices on this PO; or, when the network device needs to notify the terminal device system message change on this PO, the PDCCH signal is also present. . However, if the network device does not need to page any terminal equipment on this PO and the system message does not change, the network device may not transmit a PDCCH signal on this PO to save resources.
  • the terminal device even if there is no PDCCH transmission on the PO, the terminal device still needs to listen to the Type1-CSS to know that there is no PDCCH transmission, and the listening process consumes the power consumption of the terminal device, and this part of the power consumption is for the terminal device. Said to be unnecessary.
  • the role of the indication information is to indicate whether there is a valid PDCCH signal on the PO of the terminal device before the PO or at the location of the PO, and if present, the terminal device monitors the PDCCH signal; If not, the terminal device does not monitor the PDCCH signal.
  • the indication of the indication information makes the monitoring of the PDCCH of the terminal device more targeted, avoids unnecessary monitoring of the downlink control signal, and saves power consumption.
  • the network device For a PDCCH signal used to schedule a normal downlink data signal or an uplink data signal in the NB-IoT, the network device sends a PDCCH signal to the terminal device through a User Equipment Specific Search Space (USS).
  • the PDCCH signal is generally scrambled by a Cell Radio Network Temporary Identity (C-RNTI).
  • C-RNTI Cell Radio Network Temporary Identity
  • the PDCCH signal may or may not exist because the network device may schedule a terminal device within the USS or may not schedule the terminal device.
  • the terminal device still needs to monitor the entire USS to know that there is no valid PDCCH, and the listening process consumes power consumption of the terminal device. This part of the power consumption is not necessary for the terminal equipment.
  • the period of a downlink control signal search space is the period of the PDCCH corresponding to the search space, for example, the USS period is equivalent to the period of the PDCCH corresponding to the USS, and the PDCCH period is generally determined by the network side device. The terminal device is notified by system message or other signaling. Other points in this application will not be repeated here.
  • the effective PDCCH in the search space refers to, for example, for the USS
  • the effective PDCCH in a certain USS of one terminal device refers to the PDCCH that is scrambled by the C-RNTI of the UE in the USS. ,Correct It is similar in other search spaces and will not be described again.
  • the indication information is used to indicate whether the terminal device has a valid PDCCH signal in the USS before the USS. If present, the terminal device monitors the PDCCH signal; if not, the terminal device does not monitor the PDCCH signal.
  • the indication of the indication information makes the monitoring of the PDCCH of the terminal device more targeted, avoids unnecessary monitoring of the downlink control signal, and saves power consumption.
  • SC-MTCH Single Cell Multicast Traffic Channel
  • SC-MCCH Single Cell Multicast Control Channel
  • the PDCCH used to schedule the signal in the random access process is similar to the USS and will not be described again.
  • the signals in the random access process include Random Access Response (RAR), Message 3 or Message4.
  • the indication information is used to indicate the number of repetitions or the transmission duration of the PDCCH in the first time period.
  • the signal often needs to be transmitted repeatedly to improve the robustness of the received signal at the receiving end.
  • the PDCCH signal used for scheduling is also repeated for a certain number of times. Different repetition times mean that the transmission duration of the PDCCH is different, so the number of repetitions and the transmission duration have a corresponding relationship.
  • the terminal device monitors the PDCCH signal of the paging information, the terminal does not know the specific number of repetitions used for the PDCCH transmission even if the PDCCH signal transmission does exist.
  • the indication information indicates the number of repetitions of the PDCCH signal or the transmission duration, which can reduce the blind detection of the terminal device and save power consumption.
  • the indication information is used to indicate a signal format or a system message change of the PDCCH signal in the first time period.
  • the PDCCH of the paging signal has two formats, the format 1 is used to schedule paging information, and the format 2 is used to indicate system message change.
  • the network device sends a PDCCH of format 2 to indicate the terminal device system message change.
  • the terminal device needs to receive the PDCCH signal, and receiving the PDCCH signal generally requires a relatively large power consumption, because: First, since the PDCCH is a control channel, it generally needs to be relatively high.
  • the receiving performance is long, so the transmission duration is generally long, and the terminal equipment receives relatively high power consumption.
  • the paging is a cell-level behavior, so it is necessary to take into account the terminal equipment with poor environment and poor coverage, so the paging signal
  • the PDCCH will also be transmitted using a more conservative transmission strategy, which requires a longer transmission duration.
  • the indication information is used to indicate a signal format or a system message change of the PDCCH. For example, when the system message is changed, or when the PDCCH is in the format 2, the terminal does not need to continue to monitor the PDCCH signal to know that the system message has changed. The system message is updated, thereby saving power consumption of the terminal re-reading the PDCCH signal.
  • the indication information may also be used to indicate a time resource location of the PDCCH signal in the first time period. For example, even if there is a valid PDCCH in a search space, the PDCCH has many possible starting positions. When the terminal device listens to the search space, it does not know the specific location of the PDCCH, and needs to perform blind detection. Sometimes, the terminal device needs to always listen to the end of the search space to receive the PDCCH signal, resulting in unnecessary power consumption. Therefore, one of the functions of the indication information may be to indicate a time resource location of the PDCCH.
  • the time resource location may refer to a starting location of the PDCCH, or may be an alternate number indicating the PDCCH according to a preset numbering rule, or any other parameter that can achieve a similar indication. It should be explained here that the starting position of the PDCCH is not necessarily the starting position of the true transmission of the PDCCH, but the terminal device can The starting position of the PDCCH self-infers the starting position of the true transmission of the PDCCH, and similar problems are not repeated elsewhere in this application.
  • the indication information may also be used to indicate the number of transmissions of the PDCCH in the first time period.
  • the indication information may be used to indicate how many times the effective PDCCH transmission is shared in the first time period.
  • the number of transmissions is different from the number of repetitions.
  • the number of transmissions refers to how many times the PDCCH has effective transmission
  • the number of repetitions refers to the number of times the PDCCH is repeated in one transmission.
  • the length of the first time period may be a positive integer multiple of a discontinuous reception (DRX) period, because the PO is generally periodically distributed, and the period of the PO is a DRX period configured by the network device. Therefore, optionally, the indication information may indicate whether a PDCCH (PDCCH scheduling paging information) exists in a future paging DRX cycle or a plurality of paging DRX cycles.
  • the length of the first time period may also be a positive integer multiple of the eDRX cycle.
  • the length of the first time period may also be a non-integer multiple of the paging DRX cycle or the eDRX cycle, for example, a half paging DRX cycle or an eDRX cycle.
  • the length of the first time period may be a positive integer multiple of the PDCCH period, because the PDCCH search space is generally periodically distributed, and the period is a PDCCH period configured by the base station.
  • the PDCCH period is in dedicated RRC signaling. Indicates that for the PDCCH used to schedule the SC-MTCH data signal, its PDCCH period is indicated in the SC-MCCH, and for the PDCCH used to schedule the SC-MCCH data signal, its PDCCH period is indicated in the system message, and is used for scheduling The PDCCH of the signal in the random access procedure, whose PDCCH period is indicated in the system message.
  • the indication information may indicate whether a PDCCH exists in a future PDCCH period or a plurality of PDCCH periods.
  • the length of the first time period may also be a non-integer multiple of the PDCCH period, for example, a half PDCCH period or the like.
  • the starting position of the first time period may be the transmission end time of the indication information, or may be a time after the transmission end time of the indication information, and the terminal device may according to the indication information and/or The appointment rule determines the starting position of the first time period.
  • the transmission end time of the indication information may be the end of the last subframe of the indication information transmission, and the interval between the moment after the transmission end time of the indication information and the transmission end time of the indication information is according to the system message or High-level signaling indications and/or pre-set rules are determined.
  • Step 202 The network device sends the indication information to the terminal device.
  • the configuration information of the indication information may be used to indicate at least one of a start time resource location, a frequency resource location, a transmission duration, a presence, and a periodic configuration of the indication information.
  • the configuration information or part of the configuration information may be indicated in a system message or other RRC signaling.
  • the configuration information or the partial configuration information of the indication information may be indicated in the signaling that carries the downlink control signal search space configuration information, where the search space may be the search space indicated by the indication information.
  • the configuration information or the partial configuration information may be indicated in the signaling carrying the Type1-CSS configuration information, that is, in the system information block 2 (System Information Block 2) Instructed in the -Narrow Band, SIB2-NB); further optionally, configuration information or partial configuration information of the indication information of the PDCCH of the paging information may be indicated in the RadioResourceConfigCommonSIB-NB information element in the SIB2-NB.
  • the configuration information or the partial configuration information may be indicated in the signaling carrying the USS configuration information, that is, Indicated in DL-DCCH-Message-NB or UL-DCCH-Message-NB; further optionally, configuration of the indication information
  • the information or the partial configuration information may be indicated in the RRCConnectionReconfiguration-NB information element in the DL-DCCH-Message-NB or the UL-DCCH-Message-NB; further optionally, the configuration information or partial configuration information of the indication information may be in the RRCConnectionReconfiguration.
  • the configuration information or partial configuration information of the indication information may be indicated in a PhysicalConfigDedicated-NB information element in the RadioResourceConfigDedicated-NB; further optionally, the indication information
  • the configuration information or the partial configuration information may be indicated in the NPDCCH-ConfigDedicated-NB information element in the PhysicalConfigDedicated-NB; further optionally, the configuration information or partial configuration information of the indication information may be npdcch- in the NPDCCH-ConfigDedicated-NB- Indicated in NumRepetitions-r13.
  • the configuration information or the partial configuration information may be indicated in the signaling carrying the Type2-CSS configuration information, that is, Instructed in the System Information Block 2-Narrow Band (SIB2-NB); further optionally, the configuration information or partial configuration information of the indication information of the PDCCH may be a RadioResourceConfigCommonSIB-NB information element in the SIB2-NB.
  • the configuration information or the partial configuration information of the indication information of the PDCCH may be indicated in the NPRACH-ConfigSIB-NB-r13 in the RadioResourceConfigCommonSIB-NB.
  • the configuration information or the partial configuration information may be indicated in the signaling carrying the Type 2A-CSS configuration information, that is, in the SC-MCCH. Instructions.
  • the indication information may be an optional function, that is, the indication information is not used in a partial downlink control signal search space.
  • the network device indicates whether the indication information is supported in the configuration information of the indication information (that is, whether the indication information exists).
  • the sending period of the indication information may also be indicated in the configuration information.
  • the indication information may be sent on the same frequency resource as the downlink control signal search space indicated by the same, or may be sent on a different frequency resource in the downlink control signal search space indicated by the instruction information;
  • the frequency resource location may be pre-agreed or indicated by the network device, such as the network device may indicate in a system message or other high layer signaling, or may be jointly determined by a pre-agreed rule and a network device indication.
  • the start time resource location of the indication information transmission may be a time position before the start time of the downlink control signal search space indicated by the indication, or the start time of the indicated downlink control signal search space, or The indicated downlink control signal searches for a time position after the start time of the space.
  • the start time resource location of the indication information transmission may be pre-agreed or indicated by the network device, such as the network device may indicate in a system message or other high layer signaling, or may be jointly determined by a pre-agreed rule and a network device indication. of.
  • the transmission duration of the indication information may be pre-agreed or indicated by the network device, such as the network device may be indicated in a system message or other high-layer signaling, or indicated by a pre-agreed rule and a network device. definite.
  • the other high layer signaling may be SC-MCCH signaling, dedicated RRC signaling, or other RRC signaling.
  • Step 203 The terminal device receives the indication information sent by the network device.
  • the indication information may be composed of at least one sequence, the at least one sequence belongs to an alternative sequence set, which is pre-agreed or indicated by a system message or according to a pre-agreed rule and system message Determined together.
  • the candidate sequence set includes at least one candidate sequence, and different candidate sequences may represent no The same information.
  • the candidate sequence set includes at least two candidate sequences, wherein the candidate sequence 1 indicates that there is a valid PDCCH in the first time period, and the candidate sequence 2 indicates that there is no valid PDCCH in the first time period;
  • the candidate sequence set includes at least one candidate sequence indicating that a valid PDCCH exists within the first time period; and, for example, the candidate sequence set includes at least two candidate sequences, where Sequence 1 indicates that there is a valid PDCCH in the first time period, and is format one, that is, a PDCCH for scheduling paging information, and the alternative sequence 2 indicates that a valid PDCCH exists in the first time period, and is format 2, that is, To indicate the PDCCH of the system message change; etc.
  • the candidate sequence may be a pseudo-random sequence, such as an m-sequence, an M-sequence, a Gold sequence, a Zadoff-Chu sequence, or an orthogonal sequence (such as a Had code, a Walsh code, etc.).
  • the candidate sequence may also be a conjugate sequence or a cyclic shift sequence of the above sequence or the like.
  • the candidate sequence may also be a sequence determined according to the above sequence, ie the candidate sequence may be a function of the sequence described above.
  • the indication information may also be a data packet, that is, a transport block formed after the original information bits are encoded, modulated, and the like.
  • the original information bits of the indication information may represent different information by their bit values.
  • the original information bit of the indication information includes at least 1 bit, and when the value of the bit is '0', it indicates that there is no effective PDCCH transmission in the first time period, and when the bit takes a value of '1', it indicates the first There is a valid PDCCH transmission in the time period, or the bit meaning is reversed.
  • the original information bit of the indication information includes at least 1 bit, and when the value of the bit is '0', it indicates that there is a valid PDCCH transmission in the first time period, and is format one, that is, used to schedule paging information.
  • PDCCH when the value of the bit is '1', it indicates that there is a valid PDCCH transmission in the first time period, and is format 2, that is, a PDCCH used to indicate a system message change, or the bit meaning is reversed.
  • the original information bit of the indication information includes at least 2 bits, and when the 2 bit value is '00', it indicates that there is no effective PDCCH transmission in the first time period; when the bit value is '01', it indicates that the A valid PDCCH transmission exists in a time period, and is format 1, that is, a PDCCH for scheduling paging information; when the value of the bit is '10', it indicates that there is a valid PDCCH transmission in the first time period, and is format 2, That is, the PDCCH used to indicate the change of the system message;
  • the value of the bit indicating a certain meaning is not limited to the method in the example, for example, the presence of a valid PDCCH transmission may be '0' or '1', etc. Other places in this application are not repeated here.
  • the indication information may also be an energy detection signal, that is, the network device may not send the indication information at a resource location of the indication information. For example, when there is no valid PDCCH transmission in the first time period, the network device may not send the indication information, and the terminal device does not detect the indication information, that is, there is no effective PDCCH transmission in the first time period.
  • Step 204 The terminal device determines, according to the indication information, whether to monitor the downlink control signal.
  • the indication information can be used to indicate a variety of situations.
  • the terminal device does not monitor the downlink control signal in the first time period.
  • the indication information indicates that the presence of the downlink control signal in the first time period includes, for example, presence, time resource location, frequency resource location, number of transmissions, number of repetitions, transmission duration, and signal format
  • the terminal device may be at The downlink control signal is monitored during the first time period.
  • the PDCCH number of the paging signal is scrambled by a paging RNTI (Paging RNTI, P-RNTI).
  • a PDCCH of a non-paging signal for example, a PDCCH for scheduling a normal downlink data signal, scrambled with a C-RNTI; or a PDCCH for scheduling a normal uplink data signal, scrambled with a C-RNTI; or used to schedule an SC-MTCH
  • the PDCCH of the data signal is scrambled with a group RNTI (Group RNTI, GRNTI); or the PDCCH used to schedule the SC-MCCH data signal, scrambled with a single cell RNTI (Sigle Cell RNTI, SC-RNTI); or used to schedule random
  • the PDCCH in the access process such as the PDCCH, uses a random access RNTI (Radom Access RNTI, RA-RNTI) or TC-RNTI or C-RNTI scrambling.
  • the network device sends the indication information to the terminal device to indicate whether the PDCCH signal exists and transmits the configuration information, so that the terminal device can be more targeted before monitoring the PDCCH signal, and listen according to the indication of the indication information.
  • the downlink control signal saves the power consumption of detecting and monitoring the downlink control signal.
  • the terminal device can complete the reception of the indication information at a lower power consumption, thereby further saving the work of the terminal. Consumption.
  • an embodiment of the present application provides a network device 300, where the network device 300 includes:
  • the processing unit 301 is configured to generate indication information, where the indication information is used to indicate the existence of the downlink control signal in the first time period.
  • the sending unit 302 is configured to send the indication information to the terminal device.
  • the presence condition includes at least one of the following: the presence, absence, time resource location, frequency resource location, number of transmissions, number of repetitions, transmission duration, and signal format of the downlink control signal.
  • the content of the indication information used to indicate the existence of the at least one item of the downlink control signal in the first time period may be referred to the related content in step 201, and details are not described herein again.
  • the time resource location of the downlink control signal in the first time period is a start position of the downlink control signal in a first time period or the downlink control signal is in the first time period. Alternate number within.
  • the starting position of the first time period is a first time position after the end of the indication information transmission, and the length of the first time period is a positive integer number of downlink control channel periods.
  • the interval between the first time position and the last subframe of the indication information transmission is determined according to a system message or a high layer signaling indication and/or a preset rule.
  • the related content of the time resource position the length of the first time period, and the starting position of the downlink control signal in the first time period, refer to the related content in step 202, and details are not described herein again.
  • the downlink control signal is a temporary access wireless network temporary identifier, a cell wireless network temporary identifier, a temporary cell wireless network temporary identifier, a group wireless network temporary identifier, a single-cell wireless network temporary identifier, or a paging wireless network temporary. Identify the scrambled.
  • the configuration information of the indication information is indicated in a system message or other high layer signaling, or is determined according to a preset rule.
  • the other high layer signaling is single cell multicast control channel signaling, dedicated radio resource control signaling or other radio resource control signaling.
  • the network device 300 may perform various actions of the network device in the foregoing method embodiments.
  • the sending unit 302 is configured to perform the sending action of the network device in the foregoing method embodiment
  • the processing unit 301 is configured to perform the obtaining of the foregoing method embodiment, and determine a processing action.
  • the transmitting unit 302 can be a transmitter
  • the processing unit 301 can be a processor.
  • 400 is a network device, which includes a processor 401 and a transmitter 402. They are connected together by various electronic circuit interfaces such as buses.
  • the network device sends the indication information to the terminal device to indicate whether the PDCCH signal exists and the transmission configuration information, so that the terminal device can be more targeted before monitoring the PDCCH signal, and listen to the downlink according to the indication of the indication information.
  • the control signal saves the power consumption of detecting and monitoring the downlink control signal; at the same time, because the number of bits carried by the indication information is small, the terminal device can complete the reception of the indication information at a lower power consumption cost, thereby further saving the power consumption of the terminal. .
  • an embodiment of the present application provides a terminal device 500, where the terminal device 500 includes:
  • the receiving unit 501 is configured to receive indication information that is sent by the network device, where the indication information is used to indicate a presence of the downlink control signal in the first time period.
  • the processing unit 502 is configured to indicate, according to the indication information, whether the receiving unit receives the downlink control signal.
  • the content included in the presence may be referred to the related content in the network device 300, and the content indicating the information indicating that the downlink control signal includes the presence of the at least one content in the first time period may be referred to in step 201.
  • the relevant content will not be described here.
  • the processing unit 502 is further configured to: when the indication information indicates that the downlink control signal is in the first time period, the presence includes at least one of: presence, time resource location, frequency When the resource location, the number of transmissions, the number of repetitions, the transmission duration, and the signal format, the processing unit 502 instructs the receiving unit 501 to receive the downlink control signal in the first time period.
  • the time resource location of the downlink control signal in the first time period, the length of the first time period, and the related content of the starting location may be See the related content in step 202, and details are not described herein again.
  • the terminal device 500 may perform various actions of the terminal device in the foregoing method embodiments.
  • the receiving unit 501 is configured to perform the receiving action of the terminal device in the foregoing method embodiment
  • the processing unit 502 is configured to perform the acquiring of the terminal device in the foregoing method embodiment, and determine a processing action.
  • the receiving unit 501 can be a receiver
  • the processing unit 502 can be a processor.
  • 600 is a terminal device, which includes a processor 602 and a receiver 601. They are connected together by various electronic circuit interfaces such as buses.
  • the terminal device receives the indication information sent by the network device, and is used to indicate whether the PDCCH signal exists and the transmission configuration information, and the terminal device may be more targeted according to the indication information before monitoring the PDCCH signal, according to the indication information. Instructing to monitor the downlink control signal, saving the power consumption of detecting and monitoring the downlink control signal; at the same time, because the number of bits carried by the indication information is small, the terminal device can complete the reception of the indication information at a lower power consumption cost, further saving the terminal. Power consumption.
  • the computer program product includes one or more computer instructions.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).

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Abstract

本申请实施例提供了一种指示信息的传输方法和装置，涉及通信领域，所述方法包括：网络设备生成指示信息，所述指示信息用于指示下行控制信号在第一时间段内的存在情况；所述网络设备向终端设备发送所述指示信息。本申请能够使终端设备以更低的功耗来完成对下行控制信道的监听。

Description

一种指示信息的传输方法和装置 技术领域
本申请涉及通信领域，尤其涉及一种指示信息的传输方法和装置。
背景技术
机器类型通信(Machine Type Communication，MTC)(又称为机器间通信(Machine To Machine，M2M)或者物联网(Intent of Things，IoT))是未来通信领域的一项重要应用。在IoT系统中，一类重要的IoT通信系统是基于现有蜂窝架构的通信系统，被称为蜂窝IoT。在蜂窝IoT通信系统中，MTC基站和终端设备之间一般不需要非常高的数据传输速率，但是需要很大的覆盖面积。该类型的终端设备在与MTC基站进行通信过程中，对于功耗和设备成本的要求较高，因此终端设备的能力往往受到限制。
窄带物联网(Narrow Band Internet of Things，NB-IoT)是长期演进(Long Term Evolution，LTE)版本13(Release-13)中的特性，主要是针对一些物联网场景。在NB-IoT中，物理下行控制信道(Physical Downlink Control Channel，PDCCH)里面携带下行数据的调度信息，用来帮助终端设备获取物理下行共享信道(Physical Downlink Shared Channel，PDSCH)的配置信息从而能够接收PDSCH上的相关信息。
PDCCH在传输时，一般会基于搜索空间的形式，即终端需要监听搜索空间来获取目标PDCCH信号。但是搜索空间内很多时候是不存在有效PDCCH的，然而终端设备却依然需要监听PDCCH信号，这导致了终端设备功耗的浪费。
发明内容
本申请的实施例提供一种指示信息的传输方法和装置。
第一方面，本申请提供了一种指示信息的传输方法，包括：网络设备生成指示信息，所述指示信息用于指示下行控制信号在第一时间段内的存在情况；所述网络设备向终端设备发送所述指示信息；其中，所述存在情况包括以下至少一项：所述下行控制信号在所述第一时间段内存在；所述下行控制信号在所述第一时间段内不存在；所述下行控制信号在所述第一时间段内的时间资源位置；所述下行控制信号在所述第一时间段内的频率资源位置；所述下行控制信号在所述第一时间段内的传输次数；所述下行控制信号在所述第一时间段内的重复次数；所述下行控制信号在所述第一时间段内的传输时长；所述下行控制信号在所述第一时间段内的信号格式。
在第一方面的一个可能的实现方式中，所述下行控制信号在所述第一时间段内的时间资源位置为所述下行控制信号在第一时间段内的起始位置或者所述下行控制信号在所述第一时间段内的备选编号。
在第一方面的一个可能的实现方式中，所述第一时间段的起始位置是所述指示信息传输结束时刻后的第一时间位置处，所述第一时间段的长度是正整数个下行控制信道周期。
在第一方面的一个可能的实现方式中，所述第一时间位置与所述指示信息传输的最后一个子帧的间隔是根据系统消息或高层信令指示和/或预先设定的规则确定。
在第一方面的一个可能的实现方式中，所述下行控制信号是经过随机接入无线网络临时标识、小区无线网络临时标识、临时小区无线网络临时标识、组无线网络临时标识、单小区无线网络临时标识或寻呼无线网络临时标识加扰的。
在第一方面的一个可能的实现方式中，所述指示信息的配置信息根据系统消息或其它高层信令指示和/或预先设定的规则确定。
在第一方面的一个可能的实现方式中，所述指示信息的配置信息在第一消息中指示，所述第一消息包含所述指示信息指示的下行控制信号搜索空间的配置信息。
第二方面，本申请提供了一种指示信息的传输方法，包括：终端设备接收网络设备发送的指示信息，其中，所述指示信息用于指示下行控制信号在第一时间段内的存在情况；所述终端设备根据所述指示信息确定是否监听所述下行控制信号；其中，所述存在情况包括以下至少一项：所述下行控制信号在所述第一时间段内存在；所述下行控制信号在所述第一时间段内不存在；所述下行控制信号在所述第一时间段内的时间资源位置；所述下行控制信号在所述第一时间段内的频率资源位置；所述下行控制信号在所述第一时间段内的传输次数；所述下行控制信号在所述第一时间段内的重复次数；所述下行控制信号在所述第一时间段内的传输时长；所述下行控制信号在所述第一时间段内的信号格式。
在第二方面的一个可能的实现方式中，所述终端设备根据所述指示信息确定是否监听所述下行控制信号，包括：当所述指示信息指示所述下行控制信号在第一时间段内的所述存在情况包括以下至少一项时，所述终端设备在所述第一时间段内监听所述下行控制信号：所述下行控制信号在所述第一时间段内存在；所述下行控制信号在所述第一时间段内的时间资源位置；所述下行控制信号在所述第一时间段内的频率资源位置；所述下行控制信号在所述第一时间段内的传输次数；所述下行控制信号在所述第一时间段内的重复次数；所述下行控制信号在所述第一时间段内的传输时长；所述下行控制信号在所述第一时间段内的信号格式；当所述指示信息指示所述下行控制信号在第一时间段内不存在时，所述终端设备在所述第一时间段内不监听所述下行控制信号。
在第二方面的一个可能的实现方式中，所述下行控制信号在所述第一时间段内的时间资源位置为所述下行控制信号在第一时间段内的起始位置或者所述下行控制信号在所述第一时间段内的备选编号。
在第二方面的一个可能的实现方式中，所述第一时间段的起始位置是所述指示信息传输结束时刻后的第一时间位置处，所述第一时间段的长度是正整数个下行控制信道周期。
在第二方面的一个可能的实现方式中，所述第一时间位置与所述指示信息传输的最后一个子帧的间隔是根据系统消息或高层信令指示和/或预先设定的规则确定。
在第二方面的一个可能的实现方式中，所述下行控制信号是经过随机接入无线网络临时标识、小区无线网络临时标识、临时小区无线网络临时标识、组无线网络临时标识、单小区无线网络临时标识或寻呼无线网络临时标识加扰的。
在第二方面的一个可能的实现方式中，所述指示信息的配置信息根据系统消息或其它高层信令指示和/或预先设定的规则确定。
在第二方面的一个可能的实现方式中，所述指示信息的配置信息在第一消息中指示，所述第一消息包含所述指示信息指示的下行控制信号搜索空间的配置信息。
第三方面，本申请提供一种网络设备，包括：处理单元，用于生成指示信息，所述指示信息用于指示下行控制信号在第一时间段内的存在情况；发送单元，用于向终端设备发送所述指示信息；其中，所述存在情况包括以下至少一项：所述下行控制信号在所述第一时间段内存在；所述下行控制信号在所述第一时间段内不存在；所述下行控制信号在所述第一时间段内的时间资源位置；所述下行控制信号在所述第一时间段内的频率资源位置；所述下行控制信号在所述第一时间段内的传输次数；所述下行控制信号在所述第一时间段内的重复次数；所述下行控制信号在所述第一时间段内的传输时长；所述下行控制信号在所述第一时间段内的信号格式。
在第三方面的一个可能的实现方式中，所述下行控制信号在所述第一时间段内的时间资源位置为所述下行控制信号在第一时间段内的起始位置或者所述下行控制信号在所述第一时间段内的备选编号。
在第三方面的一个可能的实现方式中，所述第一时间段的起始位置是所述指示信息传输结束时刻后的第一时间位置处，所述第一时间段的长度是正整数个下行控制信道周期。
在第三方面的一个可能的实现方式中，所述第一时间位置与所述指示信息传输的最后一个子帧的间隔是根据系统消息或高层信令指示和/或预先设定的规则确定。
在第三方面的一个可能的实现方式中，所述下行控制信号是经过随机接入无线网络临时标识、小区无线网络临时标识、临时小区无线网络临时标识、组无线网络临时标识、单小区无线网络临时标识或寻呼无线网络临时标识加扰的。
在第三方面的一个可能的实现方式中，所述指示信息的配置信息根据系统消息或其它高层信令指示和/或预先设定的规则确定。
在第三方面的一个可能的实现方式中，所述指示信息的配置信息在第一消息中指示，所述第一消息包含所述指示信息指示的下行控制信号搜索空间的配置信息。
第四方面，本申请提供一种终端设备，包括：接收单元，用于接收网络设备发送的指示信息，其中，所述指示信息用于指示下行控制信号在第一时间段内的存在情况；处理单元，用于根据所述指示信息控制所述接收单元是否监听所述下行控制信号；其中，所述存在情况包括以下至少一项：所述下行控制信号在所述第一时间段内存在；所述下行控制信号在所述第一时间段内不存在；所述下行控制信号在所述第一时间段内的时间资源位置；所述下行控制信号在所述第一时间段内的频率资源位置；所述下行控制信号在所述第一时间段内的传输次数；所述下行控制信号在所述第一时间段内的重复次数；所述下行控制信号在所述第一时间段内的传输时长；所述下行控制信号在所述第一时间段内的信号格式。
在第四方面的一个可能的实现方式中，所述处理单元根据所述指示信息控制所述接收单元是否监听所述下行控制信号，包括：当所述指示信息指示所述下行控制信号在第一时间段内的所述存在情况包括以下至少一项时，所述处理单元控制所述接收单元在所述第一时间段内监听所述下行控制信号：所述下行控制信号在所述第一时间段内存在；所述下行控制信号在所述第一时间段内的时间资源位置；所述下行控制信号在所述第一时间段内的 频率资源位置；所述下行控制信号在所述第一时间段内的传输次数；所述下行控制信号在所述第一时间段内的重复次数；所述下行控制信号在所述第一时间段内的传输时长；所述下行控制信号在所述第一时间段内的信号格式；当所述指示信息指示所述下行控制信号在第一时间段内不存在时，所述处理单元控制所述接收单元在所述第一时间段内不监听所述下行控制信号。
在第四方面的一个可能的实现方式中，所述下行控制信号在所述第一时间段内的时间资源位置为所述下行控制信号在第一时间段内的起始位置或者所述下行控制信号在所述第一时间段内的备选编号。
在第四方面的一个可能的实现方式中，所述第一时间段的起始位置是所述指示信息传输结束时刻后的第一时间位置处，所述第一时间段的长度是正整数个下行控制信道周期。
在第四方面的一个可能的实现方式中，所述第一时间位置与所述指示信息传输的最后一个子帧的间隔是根据系统消息或高层信令指示和/或预先设定的规则确定。
在第四方面的一个可能的实现方式中，所述下行控制信号是经过随机接入无线网络临时标识、小区无线网络临时标识、临时小区无线网络临时标识、组无线网络临时标识、单小区无线网络临时标识或寻呼无线网络临时标识加扰的。
在第四方面的一个可能的实现方式中，所述指示信息的配置信息根据系统消息或其它高层信令指示和/或预先设定的规则确定。
在第四方面的一个可能的实现方式中，所述指示信息的配置信息在第一消息中指示，所述第一消息包含所述指示信息指示的下行控制信号搜索空间的配置信息。
第五方面，本申请提供一种计算机可读存储介质，包括指令，当其在计算机上运行时，使得计算机执行第一方面、第二方面、第一方面任意可能的实现方式或第二方面任意可能的实现方式。
在本申请以上方面的实现方式中，通过网络设备向终端设备发送指示信息，用来指示PDCCH信号是否存在以及传输配置信息，使终端设备可以在监听PDCCH信号之前更加有针对性，按照指示信息的指示监听下行控制信号，节省了检测监听下行控制信号的功耗。；同时，由于指示信息携带的比特数较少，终端设备可以以较低的功耗代价完成对指示信息的接收，进一步节省了终端的功耗。
附图说明
图1为本申请实施例提供的一种无线通信系统的架构示意图；
图2为本申请实施例提供的一种指示信息的传输方法流程示意图；
图3是本申请实施例提供的一种网络设备的结构示意图；
图4是本申请实施例提供的一种网络设备的结构示意图；
图5是本申请实施例提供的一种终端设备的结构示意图；
图6是本申请实施例提供的一种终端设备的结构示意图。
具体实施方式
本申请实施例涉及的终端设备,可以是指向用户提供语音和/或数据连通性的设备，具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。无线终端可以经无线接入网(例如，RAN，Radio Access Network)与一个或多个核心网进行通信，无线终端可以是移动终端，如移动电话(或称为“蜂窝”电话)和具有移动终端的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。例如，个人通信业务(PCS，Personal Communication Service)电话、无绳电话、会话发起协议(SIP)话机、无线本地环路(WLL，Wireless Local Loop)站、个人数字助理(PDA，Personal Digital Assistant)等设备。无线终端也可以称为系统、订户单元(Subscriber Unit)、订户站(Subscriber Station)，移动站(Mobile Station)、移动台(Mobile)、远程站(Remote Station)、接入点(Access Point)、远程终端(Remote Terminal)、接入终端(Access Terminal)、用户终端(User Terminal)、用户代理(User Agent)、终端设备(User Device)、或用户装备(User Equipment)。
本申请实施例所涉及的网络设备(例如，接入点)，可以是指接入网中在空中接口上通过一个或多个扇区与无线终端通信的设备。网络设备可用于将收到的空中帧与IP分组进行相互转换，作为无线终端与接入网的其余部分之间的路由器，其中接入网的其余部分可包括网际协议(IP)网络。网络设备还可协调对空中接口的属性管理。例如，网络设备可以是GSM或CDMA中的基站(BTS，Base Transceiver Station)，也可以是WCDMA中的基站(NodeB)，还可以是LTE中的演进型基站(eNB或e-NodeB，evolutional Node B)，本申请并不限定。
虽然前述内容以LTE系统为例进行了介绍，但本领域技术人员应当知晓，本申请不仅仅适用于LTE系统，也可以适用于其他无线通信系统，例如全球移动通信系统(Global System for Mobile Communication，GSM)，移动通信系统(Universal Mobile Telecommunications Systemc，UMTS)，码分多址接入(Code Division Multiple Access，CDMA)系统，以及新的网络系统等。下面以LTE系统为例进行具体实施例的介绍。
图1所示的无线通信系统架构示意图中，网络设备，例如基站,无线局域网接入点等各种传输接收点(Transmission Reception point，TRP)，为终端设备提供授权频谱下的接入服务或非授权频谱下的接入服务。所述终端设备和所述网络设备在上行链路和下行链路上按照协议层传输各种数据，例如控制信令或业务数据。其中，控制信令主要在控制信道上传输，业务数据主要在业务信道上传输。这些协议层包括物理层、媒体接入控制(Media Access Control，MAC)层以及无线资源控制(radio resource control，RRC)层等。无论是在哪一层传输的数据，最终承载在物理层上通过至少一个物理天线在无线空间中传输。
鉴于上述技术问题，本申请实施例一方面提供了一种指示信息的传输方法，用以使终端设备以更低的功耗来完成对下行控制信道的监听。如图2所示，该指示信息的传输方法可以应用于图1所示的网络架构，所述方法包括以下步骤：
步骤201：网络设备生成指示信息，所述指示信息用于指示下行控制信号在第一时间段内的存在情况。
可选的，下行控制信号在第一时间段内的存在情况可以包括以下至少一项：
下行控制信号在第一时间段内的时间资源位置；
下行控制信号在第一时间段内的频率资源位置；
下行控制信号在第一时间段内的传输次数；
下行控制信号在第一时间段内的重复次数；
下行控制信号在第一时间段内的传输时长；
下行控制信号在第一时间段内的信号格式。
可选的，下行控制信号PDCCH在第一时间段内的存在情况包括指示下行控制信号在第一时间段内存在或者不存在。
具体地，对于NB-IoT系统中用来调度寻呼(Paging)信号的PDCCH，网络设备通过第一类公共搜索空间(Type1Common Search Space，Type1-CSS)向终端设备发送PDCCH信号。该PDCCH信号一般是由寻呼无线网络临时标识(Paging Radio Network Temporary Identity，PRNTI)加扰的。用PRNTI加扰PDCCH的方法可以是，用PRNTI对PDCCH的循环冗余校验(Cyclic Redundancy Check，CRC)进行加扰等，本申请中使用其它无线网络临时标识(Radio Network Temporary Identity，RNTI)对PDCCH加扰都可使用该方法，不再赘述。网络设备发送调度寻呼信号的PDCCH的位置称为寻呼机会(Paging Occasion，PO)。在一个PO上，PDCCH信号可能存在也可能不存在。因为当网络设备需要在这个PO上寻呼某个或某几个终端设备时，PDCCH信号是存在的；或者，当网络设备需要在这个PO上通知终端设备系统消息变化时，PDCCH信号也是存在的。然而，如果网络设备在这个PO上无需寻呼任何终端设备，且系统消息也没有发生变化，则网络设备可以在这个PO上不发送PDCCH信号以节省资源。但是对于终端设备而言，即使在这个PO上没有PDCCH传输，终端设备依然需要监听Type1-CSS后才能知道没有PDCCH传输，监听过程会消耗终端设备的功耗，而这部分功耗对终端设备来说是不必要的。
因此，对于寻呼信号的PDCCH来说，指示信息的作用就是在PO之前，或者在PO的位置上，指示终端设备该PO上是否存在有效的PDCCH信号，如果存在，则终端设备监听PDCCH信号；如果不存在，则终端设备不监听PDCCH信号。指示信息的指示使终端设备对PDCCH的监听更加有针对性，避免了不必要的下行控制信号的监听，节省了功耗。
对于NB-IoT中用来调度普通下行数据信号或上行数据信号的PDCCH信号，网络设备通过用户级搜索空间(User Equipment Specific Search Space，USS)向终端设备发送PDCCH信号。该PDCCH信号一般是由小区无线网络临时标识(Cell Radio Network Temporary Identity，C-RNTI)加扰的。在一个USS周期内，PDCCH信号可能存在也可能不存在，因为网络设备有可能在这个USS内调度某个终端设备，也可能不调度该终端设备。但从终端设备角度，对于一个有可能发生调度的USS，即使在该USS内没有有效PDCCH传输，终端设备依然需要监听完整个USS才能知道没有有效的PDCCH，监听过程会消耗终端设备的功耗，而这部分功耗对终端设备来说是不必要的。
需要说明的是，本申请中，一个下行控制信号搜索空间的周期即为该搜索空间所对应的PDCCH的周期，例如USS周期等价于USS对应的PDCCH的周期，PDCCH周期一般是由网络侧设备通过系统消息或其它信令通知终端设备的。本申请其它地方对此点不再赘述。另外需要说明的一点是，搜索空间内的有效PDCCH指的是，例如，对于USS，一个终端设备的某个USS内的有效PDCCH指的是该USS内使用该UE的C-RNTI加扰的PDCCH，对 于其它搜索空间也是类似的，不再赘述。
因此，对于用来调度普通下行数据信号或上行数据信号的PDCCH来说，指示信息的作用就是在USS之前，指示终端设备该USS内是否存在有效的PDCCH信号。如果存在，则终端设备监听PDCCH信号；如果不存在，则终端设备不监听PDCCH信号。指示信息的指示使终端设备对PDCCH的监听更加有针对性，避免了不必要的下行控制信号的监听，节省了功耗。对于用来调度单小区多播业务信道(Signal Cell Multicast Traffic Channel，SC-MTCH)上的数据信号、用来调度单小区多播控制信道(Signal Cell Multicast Control Channel，SC-MCCH)上的数据信号或者用来调度随机接入过程中的信号的PDCCH，情况与USS类似，不再赘述。随机接入过程中的信号包括随机接入响应(Random Access Response，RAR)、Message 3或Message4等。
可选的，指示信息用来指示PDCCH在第一时间段内的重复次数或传输时长。在一些通信系统如NB-IoT中，信号经常需要被重复地发送以提高接收端接收信号的鲁棒性。用来调度PDCCH信号也会被进行一定次数的重复，不同的重复次数意味着PDCCH的传输时长不同，因此重复次数和传输时长有着对应的关系。在现有技术中，终端设备在监听寻呼信息的PDCCH信号时，即使确实存在PDCCH信号传输，终端也不知道PDCCH传输所使用的具体的重复次数。例如，PDCCH信号传输有4种可能的重复次数，终端需要对其进行盲检测才能具体知道PDCCH信号的重复次数，终端设备因此进行的盲检是对功耗的一种浪费。因此，指示信息指示PDCCH信号的重复次数或传输时长，可以使终端设备减少盲检，节省功耗。
可选的，指示信息用来指示PDCCH信号在第一时间段内的信号格式或系统消息变更情况。在现有技术中，寻呼信号的PDCCH有两种格式，格式1用来调度寻呼信息，格式2用来指示系统消息变更情况。当没有寻呼信息但却有系统消息变更时，网络设备会发送格式2的PDCCH，用来指示终端设备系统消息变更。但只为了获取系统消息变更这一信息，终端设备需要接收PDCCH信号，而接收PDCCH信号一般需要花费比较大的功耗，这是因为：第一，PDCCH因为是控制信道，所以一般要满足比较高的接收性能，所以其传输时长一般较长，终端设备接收也比较费功耗；第二，寻呼是小区级的行为，所以要兼顾环境不好、覆盖较差的终端设备，因此寻呼信号的PDCCH也会采用较为保守的传输策略进行传输，即需要较长的传输时长。
因此，指示信息用来指示PDCCH的信号格式或系统消息变更情况，例如，指示系统消息变更，或指示PDCCH为格式2时，终端无需继续监听PDCCH信号即可知道是系统消息发生了变化，直接去更新系统消息，从而节省了终端再读PDCCH信号的功耗。
可选的，指示信息也可以用来指示PDCCH信号在第一时间段内时间资源位置。例如，在一个搜索空间内即使存在有效PDCCH，该PDCCH还有很多种可能的起始位置，终端设备监听搜索空间时是不知道PDCCH的具体位置的，需要对其进行盲检测。有时，终端设备需要一直监听到该搜索空间的结尾处才能接收到该PDCCH信号，造成不必要的功耗花费。因此，该指示信息的一种作用可以是，指示PDCCH的时间资源位置。该时间资源位置可以指的是PDCCH的起始位置，也可以是根据预先设定的备选(candidate)编号规则指示PDCCH所处的备选编号，或者任何其它能达到类似指示作用的参数。这里需要解释的是，所谓PDCCH的起始位置，不一定是PDCCH真实发送的起始位置，但终端设备可以根据该 PDCCH的起始位置自行推断出PDCCH真实发送的起始位置，本申请其它地方不再赘述类似问题。
可选的，指示信息也可以用来指示PDCCH在第一时间段的传输次数。当第一时间段大于等于1个PDCCH周期时，指示信息可以用来指示在第一时间段内共有多少次有效PDCCH传输。传输次数与重复次数不同，传输次数指的是PDCCH有多少次有效传输，而重复次数指的是在一次传输中PDCCH被重复的次数。
可选的，第一时间段的长度可以是正整数倍的寻呼非连续接收(Discontinuous Reception，DRX)周期，因为PO一般是周期性分布的，PO的周期即为网络设备配置的DRX周期。因此，可选的，所述指示信息可以指示未来一个寻呼DRX周期或多个寻呼DRX周期内的PDCCH(调度寻呼信息的PDCCH)是否存在。特别地，若终端设备支持扩展DRX(Extended DRX，eDRX)配置，则第一时间段的长度也可以是正整数倍的eDRX周期。当然，第一时间段的长度也可以是非整数倍的寻呼DRX周期或eDRX周期，例如，半个寻呼DRX周期或eDRX周期等。
可选的，第一时间段的长度可以是正整数倍的PDCCH周期，因为PDCCH搜索空间一般是周期性分布的，周期即为基站配置的PDCCH周期，例如，对于USS，PDCCH周期在专用RRC信令中指示，对于用来调度SC-MTCH数据信号的PDCCH，其PDCCH周期在SC-MCCH中指示，对于用来调度SC-MCCH数据信号的PDCCH，其PDCCH周期在系统消息中指示，对于用来调度随机接入过程中的信号的PDCCH，其PDCCH周期在系统消息中指示。所以比较自然地，所述指示信息可以指示未来一个PDCCH周期或多个PDCCH周期内的PDCCH是否存在。当然，第一时间段的长度也可以是非整数倍的PDCCH周期，例如，半个PDCCH周期等。
可选的，第一时间段的起始位置可以是所述指示信息的传输结束时刻，也可以是所述指示信息的传输结束时刻后的某一个时刻，终端设备可以根据指示信息和/或预先约定规则确定该第一时间段的起始位置。可选的，所述指示信息的传输结束时刻可以为指示信息传输的最后一个子帧的末尾，指示信息的传输结束时刻后的某一个时刻与指示信息的传输结束时刻的间隔是根据系统消息或高层信令指示和/或预先设定的规则确定的。
步骤202：网络设备向终端设备发送指示信息。
所述指示信息的配置信息可用来指示所述指示信息的起始时间资源位置、频率资源位置、传输时长、是否存在和周期配置中的至少一项。所述配置信息或部分所述配置信息可以在系统消息或其它RRC信令里指示。
可选的，所述指示信息的配置信息或部分配置信息，可以在携带下行控制信号搜索空间配置信息的信令中指示，该搜索空间可以是所述指示信息所指示的搜索空间。例如，在NB-IoT中，对于寻呼信息的PDCCH的指示信息，其配置信息或部分配置信息可以在携带Type1-CSS配置信息的信令中指示，即可以在系统消息块2(System Information Block2-Narrow Band，SIB2-NB)中指示；进一步可选地，寻呼信息的PDCCH的指示信息的配置信息或部分配置信息可以在SIB2-NB中的RadioResourceConfigCommonSIB-NB信息元素里指示。
再例如，在NB-IoT中，对于用来指示调度普通下行数据信号或上行数据信号的PDCCH的指示信息，其配置信息或部分配置信息可以在携带USS配置信息的信令中指示，即可以在DL-DCCH-Message-NB或UL-DCCH-Message-NB中指示；进一步可选地，该指示信息的配置 信息或部分配置信息可以在DL-DCCH-Message-NB或UL-DCCH-Message-NB中的RRCConnectionReconfiguration-NB信息元素里指示；进一步可选地，该指示信息的配置信息或部分配置信息可以在RRCConnectionReconfiguration-NB中的RadioResourceConfigDedicated-NB信息元素里指示；进一步可选地，该指示信息的配置信息或部分配置信息可以在RadioResourceConfigDedicated-NB中的PhysicalConfigDedicated-NB信息元素里指示；进一步可选地，该指示信息的配置信息或部分配置信息可以在PhysicalConfigDedicated-NB中的NPDCCH-ConfigDedicated-NB信息元素里指示；进一步可选地，该指示信息的配置信息或部分配置信息可以在NPDCCH-ConfigDedicated-NB中的npdcch-NumRepetitions-r13里指示。
再例如，在NB-IoT中，对于用来指示调度随机接入过程中的信号的PDCCH的指示信息，其配置信息或部分配置信息可以在携带Type2-CSS配置信息的信令中指示，即可以在系统消息块2(System Information Block 2-Narrow Band，SIB2-NB)中指示；进一步可选地，该PDCCH的指示信息的配置信息或部分配置信息可以在SIB2-NB中的RadioResourceConfigCommonSIB-NB信息元素里指示；进一步可选地，该PDCCH的指示信息的配置信息或部分配置信息可以在RadioResourceConfigCommonSIB-NB中的NPRACH-ConfigSIB-NB-r13里指示。
再例如，在NB-IoT中，对于用来指示SC-MTCH的PDCCH的指示信息，其配置信息或部分配置信息可以在携带Type2A-CSS配置信息的信令中指示，即可以在SC-MCCH中指示。
可选的，所述指示信息可以是可选的功能，即支持在部分下行控制信号搜索空间中不使用所述指示信息。一种可能的实现方法为，网络设备在指示信息的配置信息里指示是否支持指示信息(即指示信息是否存在)。可选的，所述指示信息的发送周期也可以在配置信息里指示。
可选的，所述指示信息可以在与其指示的下行控制信号搜索空间在相同的频率资源上发送，也可以在与其指示的下行控制信号搜索空间在不同的频率资源上发送；该指示信息发送的频率资源位置可以是预先约定的，或者是网络设备指示的，如网络设备可在系统消息或其它高层信令中指示，或者是通过预先约定规则和网络设备指示共同确定的。
可选的，所述指示信息发送的起始时间资源位置可以为其指示的下行控制信号搜索空间的起始时间之前的一个时间位置，或其指示的下行控制信号搜索空间的起始时间，或其指示的下行控制信号搜索空间的起始时间之后的一个时间位置。该指示信息发送的起始时间资源位置可以是预先约定的，或者是网络设备指示的，如网络设备可在系统消息或其它高层信令中指示，或者是通过预先约定规则和网络设备指示共同确定的。
可选的，所述指示信息的传输时长可以是预先约定的，或者是网络设备指示的，如网络设备可在系统消息或其它高层信令中指示，或者是通过预先约定规则和网络设备指示共同确定的。
其中，其它高层信令可以是SC-MCCH信令、专用RRC信令或其它RRC信令。步骤203：终端设备接收网络设备发送的指示信息。
所述指示信息可以是由至少一段序列组成的，所述至少一段序列属于一个备选序列集合，该备选序列集合为预先约定的或由系统消息指示的或根据预先约定的规则和系统消息指示共同确定的。所述备选序列集合包含至少一种备选序列，不同的备选序列可以表示不 同的信息。例如，所述备选序列集合包含至少两种备选序列，其中备选序列1表示在第一时间段内存在有效PDCCH，备选序列2表示在第一时间段内不存在有效PDCCH；又例如，所述备选序列集合包含至少一种备选序列，该备选序列表示在第一时间段内存在有效PDCCH；又例如，所述备选序列集合包含至少两种备选序列，其中备选序列1表示在第一时间段内存在有效PDCCH，且为格式一，即用来调度寻呼信息的PDCCH，备选序列2表示在第一时间段内存在有效PDCCH，且为格式二，即用来指示系统消息变更的PDCCH；等。所述备选序列可以为伪随机序列，如m序列、M序列、Gold序列，也可以是Zadoff-Chu序列，也可以是正交序列(如哈德码、Walsh码等)等。所述备选序列也可以为上述序列的共轭序列或循环移位序列等。所述备选序列也可以是根据上述序列确定的序列，即所述备选序列可以是上述序列的函数。
所述指示信息也可以是数据包，即原始信息比特经编码、调制等过程后形成的传输块。所述指示信息的原始信息比特可以通过其比特取值来表示不同的信息。例如，所述指示信息的原始信息比特包含至少1比特，该比特取值为‘0’时，表示第一时间段内不存在有效PDCCH传输，该比特取值为‘1’时，表示第一时间段内存在有效PDCCH传输，或者比特含义反过来。又例如，所述指示信息的原始信息比特包含至少1比特，该比特取值为‘0’时，表示第一时间段内存在有效PDCCH传输，且为格式一，即用来调度寻呼信息的PDCCH；该比特取值为‘1’时，表示第一时间段内存在有效PDCCH传输，且为格式二，即用来指示系统消息变更的PDCCH，或者比特含义反过来。又例如，所述指示信息的原始信息比特包含至少2比特，该2比特取值为‘00’时，表示第一时间段内无有效PDCCH传输；该比特取值为‘01’时，表示第一时间段内存在有效PDCCH传输，且为格式一，即用来调度寻呼信息的PDCCH；该比特取值为‘10’时，表示第一时间段内存在有效PDCCH传输，且为格式二，即用来指示系统消息变更的PDCCH；等。需要解释的是，在本申请所有比特域的举例中，表示某个含义的比特取值不限于举例中的方法，例如，表示存在有效PDCCH传输的可以是’0’也可以是‘1’等，本申请其它地方不再赘述。
所述指示信息也可以是能量检测信号，即网络设备可以在指示信息的资源位置上不发送所述指示信息。例如，当第一时间段内无有效PDCCH传输时，网络设备可以不发指示信息，终端设备没有检测到指示信息即认为第一时间段内无有效PDCCH传输。
步骤204：终端设备根据指示信息确定是否监听下行控制信号。
如前所述，指示信息可以用来指示多种情况。可选的，当指示信息指示下行控制信号在第一时间段内不存在，则终端设备在第一时间段内不监听下行控制信号。当指示信息指示下行控制信号在第一时间段内的存在情况包括，例如存在、时间资源位置、频率资源位置、传输次数、重复次数、传输时长、信号格式的至少一项时，终端设备可以在第一时间段内监听下行控制信号。
其中，可选的，寻呼信号的PDCCH号用寻呼RNTI(Paging RNTI，P-RNTI)加扰。非寻呼信号的PDCCH，例如用来调度普通下行数据信号的PDCCH，用C-RNTI加扰；或者用来调度普通上行数据信号的PDCCH，用C-RNTI加扰；或者用来调度SC-MTCH数据信号的PDCCH，用组RNTI(Group RNTI，GRNTI)加扰；或者用来调度SC-MCCH数据信号的PDCCH，用单小区RNTI(Sigle Cell RNTI，SC-RNTI)加扰；或者用来调度随机接入过程中的信号如的PDCCH，用随机接入RNTI(Radom Access RNTI，RA-RNTI)或 TC-RNTI或C-RNTI加扰。
在本申请的实施例中，通过网络设备向终端设备发送指示信息，用来指示PDCCH信号是否存在以及传输配置信息，使终端设备可以在监听PDCCH信号之前更加有针对性，按照指示信息的指示监听下行控制信号，节省了检测监听下行控制信号的功耗；同时，由于指示信息携带的比特数较少，终端设备可以以较低的功耗代价完成对指示信息的接收，进一步节省了终端的功耗。
参见图3，本申请实施例提供了一种网络设备300，所述网络设备300包括：
处理单元301，用于生成指示信息，所述指示信息用于指示下行控制信号在第一时间段内的存在情况。
发送单元302，用于向终端设备发送所述指示信息。
其中，所述存在情况包括下行控制信号在第一时间段内的以下至少一项：存在、不存在、时间资源位置、频率资源位置、传输次数、重复次数、传输时长、信号格式。
其中，指示信息用于指示下行控制信号在第一时间段内的包括上述至少一项的存在情况的内容可以参见步骤201中的有关内容，在此不再赘述。
可选的，所述下行控制信号在所述第一时间段内的时间资源位置为所述下行控制信号在第一时间段内的起始位置或者所述下行控制信号在所述第一时间段内的备选编号。
可选的，所述第一时间段的起始位置是所述指示信息传输结束时刻后的第一时间位置处，所述第一时间段的长度是正整数个下行控制信道周期。可选的，所述第一时间位置与所述指示信息传输的最后一个子帧的间隔是根据系统消息或高层信令指示和/或预先设定的规则确定。
其中，下行控制信号在第一时间段内的时间资源位置、第一时间段的长度和起始位置的相关内容可以参见步骤202中的有关内容，在此不再赘述。
可选的，所述下行控制信号是经过随机接入无线网络临时标识、小区无线网络临时标识、临时小区无线网络临时标识、组无线网络临时标识、单小区无线网络临时标识或寻呼无线网络临时标识加扰的。
可选的，所述指示信息的配置信息在系统消息或其它高层信令中指示，或者根据预先设定的规则确定。所述其它高层信令是单小区多播控制信道信令、专用无线资源控制信令或其它无线资源控制信令。
需要说明的是，本申请实施例提供的网络设备300可以执行前述方法实施例中网络设备的各种动作。发送单元302用于执行前述方法实施例中网络设备的发送动作，处理单元301用于执行前述方法实施例的获取，确定等处理动作。在物理实现中，发送单元302可以为发送器，处理单元301可以为处理器，如图4所示，400为网络设备，其包括处理器401和发送器402。它们通过各种电子线路接口(例如总线)连接在一起。
在本申请的实施例中，网络设备向终端设备发送指示信息，用来指示PDCCH信号是否存在以及传输配置信息，使终端设备可以在监听PDCCH信号之前更加有针对性，按照指示信息的指示监听下行控制信号，节省了检测监听下行控制信号的功耗；同时，由于指示信息携带的比特数较少，终端设备可以以较低的功耗代价完成对指示信息的接收，进一步节省了终端的功耗。
参见图5，本申请的实施例提供一种终端设备500，所述终端设备500包括：
接收单元501，用于接收网络设备发送的指示信息，其中，所述指示信息用于指示下行控制信号在第一时间段内的存在情况。
处理单元502，用于根据所述指示信息指示所述接收单元是否接收所述下行控制信号。
其中，所述存在情况包括的内容可以参见网络设备300中的有关内容，指示信息用于指示下行控制信号在第一时间段内的包括上述至少一项内容的存在情况的内容可以参见步骤201中的有关内容，在此不再赘述。
在一可能的实现方式中，处理单元502，还用于当所述指示信息指示所述下行控制信号在第一时间段内的所述存在情况包括以下至少一项：存在、时间资源位置、频率资源位置、传输次数、重复次数、传输时长、信号格式时，处理单元502指示所述接收单元501在所述第一时间段内接收所述下行控制信号。
其中，关于指示信息以及下行控制信号的相关内容可以参见网络设备300中的有关内容，下行控制信号在第一时间段内的时间资源位置、第一时间段的长度和起始位置的相关内容可以参见步骤202中的有关内容，在此不再赘述。
需要说明的是，本申请实施例提供的终端设备500可以执行前述方法实施例中终端设备的各种动作。接收单元501用于执行前述方法实施例中终端设备的接收动作，处理单元502用于执行前述方法实施例终端设备的获取，确定等处理动作。在物理实现中，接收单元501可以为接收器，处理单元502可以为处理器，如图6所示，600为终端设备，其包括处理器602和接收器601。它们通过各种电子线路接口(例如总线)连接在一起。
在本申请的实施例中，终端设备接收网络设备发送的指示信息，用来指示PDCCH信号是否存在以及传输配置信息，终端设备可以根据指示信息在监听PDCCH信号之前更加有针对性，按照指示信息的指示监听下行控制信号，节省了检测监听下行控制信号的功耗；同时，由于指示信息携带的比特数较少，终端设备可以以较低的功耗代价完成对指示信息的接收，进一步节省了终端的功耗。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘Solid State Disk(SSD))等。
以上所述仅为本申请的示例，并不用以限制本申请，凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (31)

  1. 一种指示信息的传输方法，其特征在于，所述方法包括：
    网络设备生成指示信息，所述指示信息用于指示下行控制信号在第一时间段内的存在情况；
    所述网络设备向终端设备发送所述指示信息；
    其中，所述存在情况包括以下至少一项：
    所述下行控制信号在所述第一时间段内存在；
    所述下行控制信号在所述第一时间段内不存在；
    所述下行控制信号在所述第一时间段内的时间资源位置；
    所述下行控制信号在所述第一时间段内的频率资源位置；
    所述下行控制信号在所述第一时间段内的传输次数；
    所述下行控制信号在所述第一时间段内的重复次数；
    所述下行控制信号在所述第一时间段内的传输时长；
    所述下行控制信号在所述第一时间段内的信号格式。
  2. 如权利要求1所述的方法，其特征在于，所述下行控制信号在所述第一时间段内的时间资源位置为所述下行控制信号在第一时间段内的起始位置或者所述下行控制信号在所述第一时间段内的备选编号。
  3. 如权利要求1或2所述的方法，其特征在于，所述第一时间段的起始位置是所述指示信息传输结束时刻后的第一时间位置处，所述第一时间段的长度是正整数个下行控制信道周期。
  4. 如权利要求3所述的方法，其特征在于，所述第一时间位置与所述指示信息传输的最后一个子帧的间隔是根据系统消息或高层信令指示和/或预先设定的规则确定。
  5. 如权利要求1-4中任一项所述的方法，其特征在于，所述下行控制信号是经过随机接入无线网络临时标识、小区无线网络临时标识、临时小区无线网络临时标识、组无线网络临时标识、单小区无线网络临时标识或寻呼无线网络临时标识加扰的。
  6. 如权利要求1-5中任一项所述的方法，其特征在于，所述指示信息的配置信息根据系统消息或其它高层信令指示和/或预先设定的规则确定。
  7. 如权利要求6所述的方法，其特征在于，所述指示信息的配置信息在第一消息中指示，所述第一消息包含所述指示信息指示的下行控制信号搜索空间的配置信息。
  8. 一种指示信息的传输方法，其特征在于，所述方法包括：
    终端设备接收网络设备发送的指示信息，其中，所述指示信息用于指示下行控制信号在 第一时间段内的存在情况；
    所述终端设备根据所述指示信息确定是否监听所述下行控制信号；
    其中，所述存在情况包括以下至少一项：
    所述下行控制信号在所述第一时间段内存在；
    所述下行控制信号在所述第一时间段内不存在；
    所述下行控制信号在所述第一时间段内的时间资源位置；
    所述下行控制信号在所述第一时间段内的频率资源位置；
    所述下行控制信号在所述第一时间段内的传输次数；
    所述下行控制信号在所述第一时间段内的重复次数；
    所述下行控制信号在所述第一时间段内的传输时长；
    所述下行控制信号在所述第一时间段内的信号格式。
  9. 如权利要求8所述的方法，其特征在于，所述终端设备根据所述指示信息确定是否监听所述下行控制信号，包括：
    当所述指示信息指示所述下行控制信号在第一时间段内的所述存在情况包括以下至少一项时，所述终端设备在所述第一时间段内监听所述下行控制信号：
    所述下行控制信号在所述第一时间段内存在；
    所述下行控制信号在所述第一时间段内的时间资源位置；
    所述下行控制信号在所述第一时间段内的频率资源位置；
    所述下行控制信号在所述第一时间段内的传输次数；
    所述下行控制信号在所述第一时间段内的重复次数；
    所述下行控制信号在所述第一时间段内的传输时长；
    所述下行控制信号在所述第一时间段内的信号格式；
    当所述指示信息指示所述下行控制信号在第一时间段内不存在时，所述终端设备在所述第一时间段内不监听所述下行控制信号。
  10. 如权利要求8或9所述的方法，其特征在于，所述下行控制信号在所述第一时间段内的时间资源位置为所述下行控制信号在第一时间段内的起始位置或者所述下行控制信号在所述第一时间段内的备选编号。
  11. 如权利要求8-10中任一项所述的方法，其特征在于，所述第一时间段的起始位置是所述指示信息传输结束时刻后的第一时间位置处，所述第一时间段的长度是正整数个下行控制信道周期。
  12. 如权利要求11所述的方法，其特征在于，所述第一时间位置与所述指示信息传输的最后一个子帧的间隔是根据系统消息或高层信令指示和/或预先设定的规则确定。
  13. 如权利要求8-12中任一项所述的方法，其特征在于，所述下行控制信号是经过随机接入无线网络临时标识、小区无线网络临时标识、临时小区无线网络临时标识、组无线网络 临时标识、单小区无线网络临时标识或寻呼无线网络临时标识加扰的。
  14. 如权利要求8-13中任一项所述的方法，其特征在于，所述指示信息的配置信息根据系统消息或其它高层信令指示和/或预先设定的规则确定。
  15. 如权利要求14所述的方法，其特征在于，所述指示信息的配置信息在第一消息中指示，所述第一消息包含所述指示信息指示的下行控制信号搜索空间的配置信息。
  16. 一种网络设备，其特征在于，所述网络设备包括：
    处理单元，用于生成指示信息，所述指示信息用于指示下行控制信号在第一时间段内的存在情况；
    发送单元，用于向终端设备发送所述指示信息；
    其中，所述存在情况包括以下至少一项：
    所述下行控制信号在所述第一时间段内存在；
    所述下行控制信号在所述第一时间段内不存在；
    所述下行控制信号在所述第一时间段内的时间资源位置；
    所述下行控制信号在所述第一时间段内的频率资源位置；
    所述下行控制信号在所述第一时间段内的传输次数；
    所述下行控制信号在所述第一时间段内的重复次数；
    所述下行控制信号在所述第一时间段内的传输时长；
    所述下行控制信号在所述第一时间段内的信号格式。
  17. 如权利要求16所述的网络设备，其特征在于，所述下行控制信号在所述第一时间段内的时间资源位置为所述下行控制信号在第一时间段内的起始位置或者所述下行控制信号在所述第一时间段内的备选编号。
  18. 如权利要求16或17所述的网络设备，其特征在于，所述第一时间段的起始位置是所述指示信息传输结束时刻后的第一时间位置处，所述第一时间段的长度是正整数个下行控制信道周期。
  19. 如权利要求18所述的网络设备，其特征在于，所述第一时间位置与所述指示信息传输的最后一个子帧的间隔是根据系统消息或高层信令指示和/或预先设定的规则确定。
  20. 如权利要求16-19中任一项所述的网络设备，其特征在于，所述下行控制信号是经过随机接入无线网络临时标识、小区无线网络临时标识、临时小区无线网络临时标识、组无线网络临时标识、单小区无线网络临时标识或寻呼无线网络临时标识加扰的。
  21. 如权利要求16-20中任一项所述的网络设备，其特征在于，所述指示信息的配置信息根据系统消息或其它高层信令指示和/或预先设定的规则确定。
  22. 如权利要求21所述的网络设备，其特征在于，所述指示信息的配置信息在第一消息中指示，所述第一消息包含所述指示信息指示的下行控制信号搜索空间的配置信息。
  23. 一种终端设备，其特征在于，所述终端设备包括：
    接收单元，用于接收网络设备发送的指示信息，其中，所述指示信息用于指示下行控制信号在第一时间段内的存在情况；
    处理单元，用于根据所述指示信息控制所述接收单元是否监听所述下行控制信号；
    其中，所述存在情况包括以下至少一项：
    所述下行控制信号在所述第一时间段内存在；
    所述下行控制信号在所述第一时间段内不存在；
    所述下行控制信号在所述第一时间段内的时间资源位置；
    所述下行控制信号在所述第一时间段内的频率资源位置；
    所述下行控制信号在所述第一时间段内的传输次数；
    所述下行控制信号在所述第一时间段内的重复次数；
    所述下行控制信号在所述第一时间段内的传输时长；
    所述下行控制信号在所述第一时间段内的信号格式。
  24. 如权利要求23所述的终端设备，其特征在于，所述处理单元根据所述指示信息控制所述接收单元是否监听所述下行控制信号，包括：
    当所述指示信息指示所述下行控制信号在第一时间段内的所述存在情况包括以下至少一项时，所述处理单元控制所述接收单元在所述第一时间段内监听所述下行控制信号：
    所述下行控制信号在所述第一时间段内存在；
    所述下行控制信号在所述第一时间段内的时间资源位置；
    所述下行控制信号在所述第一时间段内的频率资源位置；
    所述下行控制信号在所述第一时间段内的传输次数；
    所述下行控制信号在所述第一时间段内的重复次数；
    所述下行控制信号在所述第一时间段内的传输时长；
    所述下行控制信号在所述第一时间段内的信号格式；
    当所述指示信息指示所述下行控制信号在第一时间段内不存在时，所述处理单元控制所述接收单元在所述第一时间段内不监听所述下行控制信号。
  25. 如权利要求23或24所述的终端设备，其特征在于，所述下行控制信号在所述第一时间段内的时间资源位置为所述下行控制信号在第一时间段内的起始位置或者所述下行控制信号在所述第一时间段内的备选编号。
  26. 如权利要求23-25中任一项所述的终端设备，其特征在于，所述第一时间段的起始位置是所述指示信息传输结束时刻后的第一时间位置处，所述第一时间段的长度是正整数个下行控制信道周期。
  27. 如权利要求26所述的终端设备，其特征在于，所述第一时间位置与所述指示信息传输的最后一个子帧的间隔是根据系统消息或高层信令指示和/或预先设定的规则确定。
  28. 如权利要求23-27中任一项所述的终端设备，其特征在于，所述下行控制信号是经过随机接入无线网络临时标识、小区无线网络临时标识、临时小区无线网络临时标识、组无线网络临时标识、单小区无线网络临时标识或寻呼无线网络临时标识加扰的。
  29. 如权利要求22-26中任一项所述的终端设备，其特征在于，所述指示信息的配置信息根据系统消息或其它高层信令指示和/或预先设定的规则确定。
  30. 如权利要求27所述的终端设备，其特征在于，所述指示信息的配置信息在第一消息中指示，所述第一消息包含所述指示信息指示的下行控制信号搜索空间的配置信息。
  31. 一种计算机可读存储介质，包括指令，当其在计算机上运行时，使得计算机执行如权利要求1-15任意一项所述的方法。
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