WO2017015831A1 - 一种传输信息的方法和设备 - Google Patents

一种传输信息的方法和设备 Download PDF

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Publication number
WO2017015831A1
WO2017015831A1 PCT/CN2015/085198 CN2015085198W WO2017015831A1 WO 2017015831 A1 WO2017015831 A1 WO 2017015831A1 CN 2015085198 W CN2015085198 W CN 2015085198W WO 2017015831 A1 WO2017015831 A1 WO 2017015831A1
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WO
WIPO (PCT)
Prior art keywords
user equipment
base station
information
bits
downlink
Prior art date
Application number
PCT/CN2015/085198
Other languages
English (en)
French (fr)
Inventor
铁晓磊
于峰
温汉姆•史蒂夫•詹姆斯
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to ES20171877T priority Critical patent/ES2926165T3/es
Priority to EP15899183.6A priority patent/EP3313131B1/en
Priority to EP22177138.9A priority patent/EP4117359A1/en
Priority to CN201580079079.4A priority patent/CN107534950B/zh
Priority to EP20171877.2A priority patent/EP3761727B1/en
Priority to PCT/CN2015/085198 priority patent/WO2017015831A1/zh
Priority to CN202010754526.4A priority patent/CN112073942B/zh
Publication of WO2017015831A1 publication Critical patent/WO2017015831A1/zh
Priority to US15/881,230 priority patent/US10645670B2/en
Priority to US16/831,362 priority patent/US11350384B2/en
Priority to US17/743,174 priority patent/US20220272661A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02—Arrangements for increasing efficiency of notification or paging channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving 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
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • 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
    • H04W68/025—Indirect paging
    • 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
    • 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

  • Embodiments of the present invention relate to the field of communication technologies, and, more particularly, to a method and apparatus for transmitting information.
  • MTC Machine Type Communication
  • the user equipment In order to reduce the power consumption of the user equipment, the user equipment enters an idle (IDLE) state when it does not need to send uplink data or does not currently have downlink services.
  • IDLE idle
  • the user equipment In the IDLE state, the user equipment can enter the sleep mode for a long time, that is, the receiver is turned off to achieve power saving effect.
  • the user equipment needs to wake up periodically to listen to downlink data that may be received. For example, all user equipments in the IDLE state will try to receive a paging request message at their own paging moment. However, it is actually possible that most user equipments will not receive a paging request message. In this case, the user equipment still needs to read all the physical downlink control channels (Physical Downlink Control Channels, PDCCH for short) to determine that it is not scheduled at the paging moment. Adverse. For example, in the random access process, when the base station receives the random access request sent by the user equipment and agrees to access the user equipment, the base station feeds back the random access response report to the user equipment in N frames.
  • PDCCH Physical Downlink Control Channel
  • the user equipment continuously listens to N frames, and receives and decodes all PDCCH signaling or physical downlink shared channels that may carry random access response messages (Physical Downlink Shared Channel). , abbreviated as: PDSCH) data packet, detecting whether the corresponding random access response message is fed back to the base station by itself.
  • PDSCH Physical Downlink Shared Channel
  • the base station since the uplink and downlink resources are limited, the base station does not determine which frame of the N frames to send the random access response message to the user equipment. Therefore, the user equipment needs to monitor multiple frames to detect whether the base station feeds back the random access response message, which is disadvantageous for reducing the power consumption of the user equipment.
  • the connected user equipment continuously monitors several PDCCH scheduling moments to determine whether the user equipment is scheduled. It is. In other words, it is possible to schedule the user equipment at each scheduling moment, but the user equipment is only scheduled at a certain scheduling moment, and at this time, the user equipment still needs to listen to all possible scheduling moments, and therefore, the user is also wasted.
  • the power consumption of the device is not limited.
  • the embodiment of the invention provides a method and a device for transmitting information, which can reduce the power consumption of the user equipment and achieve the purpose of power saving.
  • an embodiment of the present invention provides a method for transmitting information, where the method includes: determining, by a base station, downlink information to P user equipments in at least one user equipment in a first time period;
  • the user equipment generates an indication field, where the indication field includes M bits, each of the at least one user equipment respectively corresponding to K bits of the M bits, the K bits being used to indicate the corresponding user equipment Whether it is necessary to receive and read the downlink information sent by the base station in the first time period, M is a positive integer greater than 1, K is a positive integer greater than 1 and less than M, and P is an integer greater than or equal to 0;
  • the base station sends the indication field to the at least one user equipment.
  • the K preset functions are K preset random functions; the K numbers are K random numbers Or, the K preset functions are K preset hash functions.
  • the type of the downlink information is any one of the following The paging signaling, the random access response for answering the uplink random access request, the signaling for scheduling the downlink user equipment to receive the downlink data, and the signaling for instructing the user equipment to send the uplink data.
  • the fourth possible implementation in the first aspect includes at least one of the following: an identifier of the user equipment corresponding to the paging signaling, and a system time. information.
  • the input information of the K preset functions of the i-th user equipment includes at least one of the following: identification information and system time information in the random access request.
  • the downlink information is the signaling for scheduling the ith user equipment to receive downlink data
  • the input information of the K preset functions of the i-th user equipment includes at least one of the following: an identifier and a system of the user equipment corresponding to the signaling, where the signaling of the ith user equipment is used to send the uplink data. Time information.
  • the i-th user equipment is in an idle state
  • the input information of the K preset functions of the i-th user equipment includes at least one of the following: an international mobile subscriber identity of the i-th user equipment, and a temporary logical link identifier of the i-th user equipment.
  • the input information of the K preset functions of the ith user equipment includes at least the connection state identifier of the ith user equipment.
  • the method further includes: The base station determines the value of K and the value of M, and sends the values of K and M to the at least one user equipment.
  • the base station is in the broadcast channel PBCH and/or the physical downlink control channel PDCCH to the user equipment Send the indicator field.
  • the embodiment of the present invention provides a method for transmitting information, where the method includes: the user equipment receives an indication field of a length of M bits sent by the base station; and the user equipment determines a K of the M bits corresponding to the user equipment. Position of bits, M is a positive integer greater than 1, and K is large A positive integer of 1 and less than a positive integer of M; the user equipment determines whether to receive and read the downlink information sent by the base station in the first time period according to the value of the K bits.
  • the user equipment determines K bit positions corresponding to the user equipment in the M bits, including: determining, by the user equipment, K preset functions Inputting information, generating K numbers corresponding to the user equipment according to the input information of the K preset functions and the K preset functions, where the K numbers are used to indicate that the K bits corresponding to the user equipment are a position among M bits; determining K bit positions corresponding to the K number among the M bits.
  • the K preset functions are K preset random functions, where the K numbers are K random numbers Or, the K preset functions K preset hash functions.
  • the user equipment determines, according to the value of the K bits, whether the first time period is Receiving and reading the downlink information sent by the base station, if: determining, by the user equipment, that the value of the K bits is affirmative, determining, in the first time period, receiving and reading the downlink information sent by the base station; The user equipment determines that at least one of the values of the K bits is negative, and determines that the downlink information sent by the base station is not received and read in the first time period.
  • the downlink The type of the information is any one of the following: paging signaling, a random access response for answering the uplink random access request, signaling for scheduling the downlink user equipment to receive the downlink data, and indicating the user equipment to send the uplink data. Signaling.
  • the input of the K preset functions in the case that the downlink information is the paging signaling
  • the information includes at least one of the following: an identification of the user equipment and system time information.
  • the input information of the K preset functions includes at least one of the following: identification information and system time information in the random access request.
  • the downlink information is used for scheduling downlink user equipment to receive downlink data signaling or
  • the input information of the K preset functions includes at least one of the following: identifier of the user equipment and system time information.
  • the input information of the K preset functions includes at least one of the following: an international mobile subscriber identity of the user equipment, a temporary logical link identifier of the user equipment, and the user equipment is in an air interface.
  • the input of the K preset functions is the connection state identifier of the user equipment.
  • the input information according to the K preset functions and the K The method further includes: the user equipment receiving the value of K sent by the base station and the value of M, before the generating the K number corresponding to the user equipment.
  • the embodiment of the present invention provides a base station, where the base station includes: a determining unit, configured to: send downlink information to P user equipments in at least one user equipment in a first time period; the determining unit is further configured to: And generating, according to the determined P user equipments, an indication field, where the indication field includes M bits, each user equipment of the at least one user equipment respectively corresponding to K bits of the M bits, where the K bits are used And indicating that the corresponding user equipment needs to receive and read the downlink information sent by the base station in the first time period, where M is a positive integer greater than 1, and K is a positive integer greater than 1 and less than M, and P is greater than or An integer equal to 0; a sending unit, configured to send the indication field to the at least one user equipment.
  • a determining unit configured to: send downlink information to P user equipments in at least one user equipment in a first time period
  • the determining unit is further configured to: And generating, according to the determined P user equipments, an indication field
  • the K preset functions are K preset random functions; the K numbers are K random numbers Or, the K preset functions are K preset hash functions.
  • the downlink information type is Any one of the following: a paging signaling, a random access response for answering an uplink random access request, signaling for scheduling downlink user equipment to receive downlink data, and signaling for indicating that the user equipment sends uplink data.
  • the Kth of the i th user equipment includes at least one of the following: an identifier of the user equipment corresponding to the paging signaling and system time information.
  • the input information of the K preset functions of the i-th user equipment includes at least one of the following: identification information and system time information in the random access request.
  • the downlink information is the signaling used to schedule the user equipment to receive downlink data, or the indication is used
  • the input information of the K preset functions of the i-th user equipment includes at least one of the following: an identifier of the user equipment corresponding to the signaling and system time information.
  • the i-th user equipment in conjunction with the first possible implementation of the third aspect or the second possible implementation of the third aspect, in the seventh possible implementation manner of the third aspect, the i-th user equipment is in an idle state
  • the input information of the K preset functions of the i-th user equipment includes at least one of the following: an international mobile subscriber identity of the i-th user equipment, and a temporary logical link identifier of the i-th user equipment.
  • the input information of the K preset functions of the ith user equipment includes at least the connection state identifier of the ith user equipment.
  • the determining unit is further configured to determine a value of K and a value of M;
  • the sending unit is further configured to send the value of the K and the value of the M to the at least one user equipment.
  • the sending unit is specifically configured to use the broadcast channel PBCH and/or the physical downlink control channel.
  • the PDCCH sends the indication field to the user equipment.
  • an embodiment of the present invention provides a user equipment, where the user equipment includes: a unit, configured to receive an indication field of a length of M bits sent by the base station, and a determining unit, configured to determine K bit positions corresponding to the user equipment of the M bits, where M is a positive integer greater than 1, and K is greater than And a positive integer that is less than a positive integer of M; the determining unit is further configured to determine, according to the value of the K bits, whether to receive and read the downlink information sent by the base station in the first time period.
  • the determining unit is specifically configured to determine input information of the K preset functions; and input information according to the K preset functions and the K a preset function, generating K numbers corresponding to the user equipment, where the K numbers are used to indicate a position of the K bits corresponding to the user equipment in the M bits; determining the K bits in the M bits The corresponding number of K bit positions.
  • the K preset functions are K preset random functions, where the K numbers are K random numbers Or, the K preset functions K preset hash functions.
  • the determining unit is specifically configured to determine whether the value of the K bits is affirmative If it is determined that the value of the K bits is affirmative, determining to receive and read the downlink information sent by the base station in the first time period, and if it is determined that at least one of the values of the K bits is negative, Determining that the downlink information sent by the base station is not received and read during the first time period.
  • the downlink The type of the information is any one of the following: paging signaling, a random access response for answering the uplink random access request, signaling for scheduling the downlink user equipment to receive the downlink data, and indicating the user equipment to send the uplink data. Signaling.
  • the input information of the K preset functions in the case that the downlink information is the paging signaling
  • the at least one of the following is included: the identifier of the user equipment and system time information.
  • the input information of the K preset functions includes at least one of the following: identification information and system time information in the random access request.
  • the downlink information is used for scheduling downlink user equipment to receive downlink data signaling or
  • the input information of the K preset functions includes at least one of the following: identifier of the user equipment and system time information.
  • the input information of the K preset functions includes at least one of the following: an international mobile subscriber identity of the user equipment, a temporary logical link identifier of the user equipment, and the user equipment is in an air interface.
  • the input of the K preset functions is the connection state identifier of the user equipment.
  • the receiving unit is further configured to receive a value of K and a value of M sent by the base station.
  • the base station may indicate, by using an indication field, whether each user equipment in the user equipment sends the downlink information to the base station to the first time period.
  • the user equipment may not listen to and receive the corresponding channel. In this way, the power consumption of the user equipment can be reduced to achieve the purpose of power saving.
  • FIG. 1 is a schematic flowchart of a method for transmitting information according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of a method for transmitting information according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of a method for transmitting information according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of another method for transmitting information according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of another method for transmitting information according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of another method for transmitting information according to an embodiment of the present invention.
  • FIG. 8 is a structural block diagram of a base station according to an embodiment of the present invention.
  • FIG. 9 is a structural block diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 10 is a structural block diagram of a base station according to an embodiment of the present invention.
  • FIG. 11 is a structural block diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 1 is a schematic flowchart of a method for transmitting information according to an embodiment of the present invention. The method shown in Figure 1 is performed by a base station.
  • the base station determines, in the first time period, the P user equipments of the at least one user equipment to send downlink information.
  • the base station generates an indication field according to the determined P user equipments, where the indication field includes M bits, and each user equipment of the at least one user equipment respectively corresponds to K bits of the M bits.
  • the K bits are used to indicate whether the corresponding user equipment needs to receive and read the downlink information sent by the base station in the first time period, where M is a positive integer greater than 1, and K is greater than 1 and less than M.
  • An integer, P is an integer greater than or equal to zero.
  • the base station sends the indication field to the at least one user equipment.
  • the base station may indicate, by using an indication field, whether each user equipment in the user equipment sends the downlink information to the base station to the first time period.
  • the user equipment receives the indication field from the base station, if the user equipment determines that the downlink information does not need to be received and read in the first time period, the user equipment may not listen to and receive the corresponding channel. In this way, the power consumption of the user equipment can be reduced to achieve the purpose of power saving.
  • the at least one user equipment may include the first type of user equipment and/or the second type of user equipment.
  • the P user devices in the at least one user equipment may be referred to as the first type user equipment.
  • the first type of user equipment is a type of user equipment that the base station determines to send downlink information to the at least one user equipment in a first time period. For example, if the downlink information to be sent is a paging message in the first time period, the base station may determine, according to the signaling of the core network, the user equipment that needs to be paged in the first time period, thereby determining the user equipments. For the first type of user equipment.
  • the base station determines, according to the scheduling algorithm, that in the first time period.
  • the scheduled user equipment is used as the first type of user equipment; for example, the first time period is a period of time after the uplink random access resource, and the downlink information to be sent is used to respond to the random access request sent by the user equipment.
  • a random access response message of the packet the base station selects a user equipment corresponding to the random access request message according to the available condition of the uplink resource, and feeds the random access response message to the user equipment in the first time period.
  • the base station determines that the user equipments are the first type of user equipment.
  • the second type of user equipment is a user equipment to which the base station does not send downlink information during the first time period.
  • the base station performing the method shown in FIG. 1 is the serving base station of the connected user equipment.
  • the base station performing the method shown in FIG. 1 is the base station where the camping cell of the user equipment in the idle state is located.
  • the base station may set the K bit positions corresponding to each of the P user equipments to be positive according to the P user equipments.
  • the K bit positions corresponding to each user equipment of the at least one user equipment are pre-configured by the base station, and the configuration result is sent to the corresponding user equipment.
  • the base station in the case that P is an integer greater than 0, the base station generates an indication field according to the determined P user equipments, where the base station determines an i-th user equipment of the P user equipments.
  • the input information of the K preset functions, where i 1, . . .
  • the base station inputs information according to the K preset functions of the i-th user equipment and K presets of the i-th user equipment a function, generating K numbers corresponding to the i-th user equipment, where the K numbers are used to indicate the positions of the K bits corresponding to the i user equipments in the M bits;
  • the corresponding bit positions of the K numbers are set to be positive to indicate that the i th user equipment needs to receive the downlink information sent by the base station in the first time period.
  • the initial values of the M bits are all negative.
  • the values of the K bits corresponding to the P user equipments are all set to be positive, and the remaining user equipments (ie, the second type) The corresponding K bit positions of the user equipment are not operated.
  • the base station can be instructed to send downlink information to the base station in the first time period by using the positive value of the K bits, and the base station is in the first time period by the presence of at least one of the values of the K bits being negative. No downstream information is sent to it.
  • the base station does not send downlink information to any user equipment in the first time period, and therefore, the base station determines that the M bits are all negative.
  • the base station and the user equipment can presuppose that "1" is used for affirmation, and "0" is used for negative.
  • the base station and the user equipment can also be pre-defined to use "0" for affirmation and "1" for negative.
  • the base station and the user equipment may also pre-specify the use of a specific set of codes to indicate affirmation, and the other set of codes to indicate negation. The invention is not limited.
  • the K preset functions are K preset random functions, and the K numbers are K random numbers.
  • the preset function is a random function
  • the generated number is a random number, which can cause different user equipments to generate corresponding numbers with randomness, thereby reducing the probability of false alarms.
  • the K preset functions are K preset hash functions.
  • the K preset functions are K hash functions or the hash function modulates M values.
  • the K preset functions are functions that equally map the input of each of the preset functions to M output values.
  • the type of the downlink information is any one of the following: paging signaling, a random access response for answering an uplink random access request, signaling for scheduling downlink user equipment to receive downlink data, and Signaling indicating that the user equipment sends uplink data.
  • the input information of the K preset functions of the i-th user equipment may correspond to the type of the downlink information. That is, the base station may determine input information of the K preset functions of the i-th user equipment according to the type of the downlink information.
  • the input information of the K preset functions of the i-th user equipment includes at least one of the following: an identifier of the user equipment corresponding to the paging signaling, and a system time. information.
  • the system time information includes any one or more of the following: a system superframe number, a system frame number, and a system subframe number.
  • the input information of the K preset functions of the i-th user equipment includes at least one of the following: the random access request Identification information and system time information in the middle.
  • the system time information includes any one or more of the following: a system superframe number, a system frame number, and a system subframe number.
  • the identifier information in the random access request is a random number included in the random access request or an index value corresponding to the access sequence corresponding to the random access request.
  • the ith user equipment includes at least one of the following: an identifier of the user equipment corresponding to the signaling and system time information.
  • the system time information includes any one or more of the following: a system superframe number, a system frame number, and a system subframe number.
  • input information of the K preset functions of the i-th user equipment may correspond to a state in which the i-th user equipment is located. That is, the base station can determine input information of the K preset functions of the i-th user equipment according to the state of the i-th user equipment.
  • the input information of the K preset functions of the ith user equipment includes at least one of the following: an international mobile of each of the first type of user equipments.
  • An International Mobile Subscriber Identification Number (IMSI) a temporary logical link identifier (Temporary Logical Link Identifier) of the first type of user equipment; where the i-th user equipment is in an air interface connection state,
  • the input information of the K preset functions of the i-th user equipment includes a connection state identifier of each of the first type of user equipments.
  • the connection state identifier may be a Cell Radio Network Temporary Identifier (C-RNTI).
  • the base station may further determine, according to a preset, input information of K preset functions of the i-th user equipment.
  • the base station determines, according to a preset rule, input information of the K preset functions of the i th user equipment, including: pre-specifying the identification information of the user equipment according to a preset (for example, IMSI or TLLI) at least one input information as a preset function; according to a preset, further for some or all of the K preset functions, the time information may also be input information of a preset function; further, for some or all of the presets K preset functions, the index number of the type of the downlink information can also be used as the input information of the preset function.
  • a preset for example, IMSI or TLLI
  • a method of mapping the K numbers output from the K preset functions to the K bit positions in the M bit indication field is exemplified as follows.
  • TLLI Temporary Logical Link Identifier
  • two functions preset between the base station and the user equipment can be defined as Hash (TLLI) and Hash (TLLI
  • Superframe number corresponding to the segment (SuperFrame Cascade of number).
  • the output of the Hash() function is an 8-bit long number (ranging from 0 to 255).
  • the base station generates two numbers of 8 bits long according to two preset functions Hash (TLLI_1) and Hash (TLLI_1
  • the base station separately obtains a modulo value for M, and obtains a modulo value output of 1 and 3 respectively, and the base station sets the first bit position and the third bit position to be positive (assuming 1 indicates affirmative); further
  • the base station generates two numbers of 8 bits long according to two preset functions Hash (TLLI_2) and Hash (TLLI_2
  • the base station respectively obtains a modulo value for M, and obtains a modulo value output of 2 and 3 respectively, and the base station sets the second bit position and the third bit position to be positive (assuming 1 indicates affirmative);
  • the base station according to the TLLI of the user equipment 1 and the user equipment 2 and the SuperFrame Number corresponding to the first time period, that the user equipment 1 should set the first and third bit positions, and the user equipment 2 should set the second bit position and the third position.
  • the bit position, so the combined indication field should set the first, second and third bit positions, and the set is 011100.
  • the method further includes: the base station determining the values of K and M, and transmitting the values of K and M to the user equipment.
  • the values of K and M are related to the average load in the first time period, that is, the average number of user equipments of the first type that need to be scheduled and sent downlink information in the first time period (assumed to be P' , where P' is the average number of first-class user devices).
  • P' the average number of first-class user devices.
  • the value of M should be increased.
  • the value of M can be appropriately reduced.
  • the K value is determined, if the load is heavy, the P' user equipments are likely to set most of the bit positions in the M bits for a certain time. At this time, for the first time period, it is not scheduled or sent by the base station.
  • the corresponding K bit positions will be set to a higher probability (this is the false alarm). Therefore, when the load becomes heavy, the number of bits of the indication field (ie, the value of M) should be appropriately increased.
  • the K value its optimal value is actually related to the average load number P' and the M value. Therefore, when the average load changes, the base station or other network device should be allowed to send and update K values and/or M values for all user equipments that need to read the indication field.
  • the base station can also adjust the values of K and/or M as needed. If the number of user equipments to be scheduled (assuming P) is relatively small, the value of M can be appropriately reduced. If the number of user equipments to be scheduled is relatively large, the value of increasing M may be appropriately increased to reduce the false alarm probability. Correspondingly, the base station can obtain an optimal or better value of K corresponding to different M values and the number of user equipments that need to be scheduled. For example, the K value can be taken as a typical value. Of course, optionally, in order to reduce the implementation complexity, K can also simply fix 2 or 3.
  • the base station may send the determined value of M to all user equipments that need to read the indication field.
  • the base station may also send the K value to all user equipments that need to read the indication field.
  • the base station can be sent to the user equipments by means of broadcast, and the base station can also directly send the user equipments.
  • the indication field may be sent periodically or sent according to an event trigger, where the user equipment indicates that the user equipment receives and reads the downlink information in different first time periods, the base station may maintain The M value is unchanged, only the K value is updated and the updated K value is sent to the user equipment; or the base station can keep the K value unchanged, only update the M value and send the updated M value to the user equipment; Alternatively, the K value and the M value are updated simultaneously, and the updated K value and M value are sent to the user equipment.
  • the K value and the M value may be preset between the base station and the user equipment. That is, optionally, the appropriate K value and M value may be determined according to the long-term average service model of the system; optionally, the determination of the M value may also need to be considered, and the limitation of the physical layer resource of the indication field is carried. Select the appropriate M value to further select the appropriate K value.
  • the K and M values are selected and do not need to be changed, and the base station and the user equipment perform calculation based on the preset K value and the M value.
  • the K value and the M value can be changed semi-statically, the same K value and M value can be set between the base station and the user equipment using higher layer signaling.
  • the base station sends the indication field to the user equipment in a broadcast channel (Physical Broadcast Channel, PBCH for short) and/or a physical downlink control channel entry.
  • PBCH Physical Broadcast Channel
  • the sending of the indication field may be performed by using a broadcast channel, or periodically by using a common downlink control unit (common DCI) or a common PDCCH message on the PDCCH.
  • common DCI common downlink control unit
  • the indication field and the first time period should have an explicit timing definition, and the timing relationship definition is pre-configured by the base station to the user equipment; or the timing relationship is a preset timing relationship.
  • Figure 2 is a schematic diagram of the timing relationship. As shown in FIG. 2, if the indication field is used to indicate whether the user equipment needs to receive and read the downlink information in the first time period, the indication field should start to be sent at a preset time position before the start position of the first time period. . If the time deviation between the indication field and the corresponding first time period is the timing relationship T1, the timing relationship T1 is greater than the user equipment acquisition indication field. Collection and processing time.
  • the base station and the user equipment should acquire the indication field according to the same timing relationship T1 and the setting of the first time period length ⁇ T and determine whether to receive and read the downlink information in the first time period. Therefore, the base station and the user equipment will pre-agreed the timing relationship T1 and the first time period length ⁇ T; or the base station configures the timing relationship T1 and the first time period length ⁇ T to the user equipment by signaling; or, the timing relationship T1 and the first The time period length ⁇ T is a predefined value.
  • the base station will send the corresponding indication field and the corresponding user equipment downlink information in the first time period according to the timing relationship T1 and the first time period length ⁇ T.
  • the user equipment determines the starting position and length of the first time period indicated by the read indication field according to the predefined/preconfigured timing relationship T1 and the first time period length ⁇ T.
  • the base station and the user equipment further need to preset an indication field sending period T2, and the indication field sending period may also be in the base station and the user equipment in a pre-configured or predefined manner. Pre-set between.
  • FIG. 3 is a schematic flowchart of a method for transmitting information according to an embodiment of the present invention.
  • the user equipment receives an indication field that is sent by the base station and has a length of M bits.
  • the user equipment determines a location of the M bits corresponding to the K bits of the user equipment.
  • the user equipment determines, according to the value of the K bits, whether to receive and read the downlink information sent by the base station in the first time period.
  • the user equipment may determine, according to the indication field, whether it needs to receive and read the downlink information sent by the base station in the first time period. If the user equipment determines that the downlink information sent by the base station needs to be received and read, the corresponding channel is monitored in the first time period. If the user equipment determines that the downlink information sent by the base station is not required to be received and read, the corresponding channel may not be monitored during the first time period. At the same time, since a plurality of bit positions are used to indicate whether a user equipment needs to receive and read the scheduling control information and the corresponding data channel in the first time period, unnecessary false alarms can be reduced. If the user equipment is a user equipment in a connected state, the base station is a serving base station of the user equipment. If the user equipment is a user equipment in an idle state, the base station is a base station where the camping cell of the user equipment is located.
  • determining the K bit positions of the M bits corresponding to the user equipment including: receiving, by the base station, pre-configured bit position indication information, where the bit position indication information includes K bit positions of the user equipment; according to the bit position indication letter Information, determine the K bit positions corresponding to the user equipment.
  • the user equipment determines K bit positions corresponding to the user equipment of the M bits, including: the user equipment determines input information of K preset functions; The input information of the K preset functions and the K preset functions generate K numbers corresponding to the user equipment, where the K numbers are used to indicate the position of the K bits corresponding to the user equipment in the M bits.
  • the user equipment determines K bit positions corresponding to the K number among the M bits. For example, for a user equipment in the IDLE state under the S1 architecture or a user equipment that has timed out for the Gb architecture preparation timer (Ready Timer), the user equipment periodically receives the paging occasion (Paging Occasion).
  • a paging request message (Paging Request message), so if the first time period includes a paging occasion of the user equipment in the IDLE state, the downlink information that the user equipment expects to receive in the first time period is a paging a request message; for example, for the user equipment that is in the connected state in the first time period, the downlink information that the user equipment expects to receive in the first time period is signaling for scheduling the user equipment to receive downlink data, and indicating the user
  • the device sends signaling of the uplink data. For the user equipment that wants to access the base station through the RACH procedure, after the random access request message is sent, the user equipment needs to wait for the base station to feed back the random access response message. And performing subsequent uplink sending and downlink receiving according to the response message, and therefore, the user who sent the random access request Equipment, the user equipment receives the downlink information of a first period of time desired for the random access response message.
  • the K preset functions are K preset random functions, and the K numbers are K random numbers.
  • the preset function is a random function
  • the generated number is a random number, which can cause different user equipments to generate corresponding numbers with randomness, thereby reducing the probability of false alarms.
  • the K preset functions are K preset hash functions.
  • the K preset functions are K hash functions or the hash function modulates M values.
  • the K preset functions are functions that equally map the input of each of the preset functions to M output values.
  • the user equipment determines, according to the value of the K bits, whether to receive and read the downlink information sent by the base station in the first time period, including: if the user equipment determines that the value of the K bits is affirmative, And determining, in the first time period, receiving and reading the downlink information sent by the base station; if the user equipment determines that at least one of the values of the K bits is negative, determining that the first time is The downlink information sent by the base station is not received and read in the interval.
  • the user equipment referred to in FIG. 3 refers to a user equipment that the base station may send downlink information to the first time period.
  • the base station may send a paging request message to the user at the paging occasion.
  • the device so the user equipment should obtain an indication field corresponding to the first time period to determine whether the downlink information in the first time period needs to be read.
  • the user equipments can be classified into three categories: a first type of user equipment, a second type of user equipment, and a third type of user equipment.
  • the first type of user equipment is the P user equipment in the method shown in FIG. 1 , and the base station determines to send downlink information to the first type of user equipment in the first time period, so the indication field corresponding to the first time period corresponds to The value of the K bits of each type of user equipment must be affirmative. Therefore, the first type of user equipment must further receive and read the downlink information in the first time period. Therefore, it can be seen that the method of the present invention does not cause any one of the first type of user equipments to miss the downlink information transmitted during the first time period.
  • the second type of user equipment is a user equipment to which the base station does not send downlink information in the first time period, and at least one of the values of the K bits corresponding to each second type of user equipment in the indication field is negative. . Therefore, after obtaining the indication field, the second type of user equipment can determine that the downlink information sent by the base station is not received and read in the first time period, thereby reducing power consumption.
  • the third type of user equipment is a user equipment to which the base station does not send downlink information in the first time period, and the value of the K bits corresponding to the third type of user equipment in the indication field is affirmative. Therefore, after reading the indication field, the third type of user equipment receives and reads the downlink information sent by the base station in the first time period, but because the base station does not actually send downlink information to the base station, the third type of user equipment In the process of reading the downlink information sent by the base station, the downlink information corresponding to the self (the downlink information matching the identity of the identity) may not be found, so that the reading of the subsequent information is stopped, for example, the third type of connected state user equipment obtains the indication.
  • the scheduling information in the PDCCH is continuously read.
  • the base station does not actually schedule the user equipment, the user equipment cannot find the corresponding scheduling in the PDCCH. Information, so it will not continue to read PDSCH or send PUSCH.
  • the appearance of the third type of user equipment is actually because the K bit positions of the third type of user equipment overlap with the bit positions set by all the first type of user equipments in the first time period, which is a false alarm situation.
  • the third type of equipment will During the subsequent downlink information reading process, it is known that the base station does not send downlink information to it, so the third type of device only fails to achieve the purpose of reading less downlink signaling power consumption of the second type of device, and does not introduce other as a result of.
  • the proportion of the third type of user equipment can be controlled to be lower than the preset threshold under a reasonable value of K and M values.
  • the type of the downlink information is any one of the following: paging signaling, a random access response for answering an uplink random access request, signaling for scheduling downlink user equipment to receive downlink data, and indicating The user equipment sends signaling of uplink data.
  • the input information of the K preset functions corresponds to the type of the downlink information. That is, the user equipment determines the input information of the K preset functions, and the user equipment determines the input information of the K preset functions according to the type of the downlink information.
  • the input information of the K preset functions of the i-th user equipment includes at least one of the following: an identifier of the user equipment corresponding to the paging signaling, and a system time. information.
  • the system time information includes any one or more of the following: a system superframe number, a system frame number, and a system subframe number.
  • the identifier of each user equipment may be different, so that the probability that the K numbers output based on the K preset functions are the same is low. In particular, for some functions (such as hash functions), if the inputs are different, the output will have a large probability of difference. Therefore, it is more reliable to ensure that the probability that the number of Ks outputted by different user equipments is the same is low, thereby avoiding the occurrence of false alarms.
  • the input information of the K preset functions of the i-th user equipment includes at least one of the following: the random access request Identification information and system time information in the middle.
  • the system time information includes any one or more of the following: a system superframe number, a system frame number, and a system subframe number.
  • the identifier information in the random access request is a random number included in the random access request or an index value corresponding to the access sequence corresponding to the random access request.
  • the identifier information in the random access request is a random number included in the random access request or an index value corresponding to the access sequence corresponding to the random access request, according to the agreement between the base station and the user equipment.
  • the identification information in the random access request of each first type of user equipment may be different, so the probability that the K numbers output based on the K preset functions are the same is low.
  • some functions such as hash functions
  • the output will have a large probability of difference. Therefore, it is more reliable to ensure that the probability that the number of Ks outputted by different user equipments is the same is low, thereby avoiding the occurrence of false alarms.
  • the downlink information is the signaling used to schedule downlink user equipment to receive downlink data.
  • the input information of the K preset functions of the i-th user equipment includes at least one of the following: an identifier of the user equipment corresponding to the signaling, and system time information.
  • the system time information includes any one or more of the following: a system superframe number, a system frame number, and a system subframe number.
  • the identifiers of each type of user equipment are different, so the probability that the number of Ks output based on the K preset functions are the same is low. In particular, for some functions (such as hash functions), if the inputs are different, the output will have a large probability of difference. Therefore, it is more reliable to ensure that the probability that the number of Ks outputted by different user equipments is the same is low, thereby avoiding the occurrence of false alarms.
  • the input information of the K preset functions corresponds to a state in which the user equipment is located. That is, the user equipment determines the input information of the K preset functions, and the user equipment determines the input information of the K preset functions according to the state of the user equipment.
  • the input information of the K preset functions includes at least one of: an international mobile subscriber identity of the user equipment, and a temporary logical link identifier of the user equipment;
  • the input information of the K preset functions is the connection state identifier of the user equipment.
  • the user equipment determines input information of the K preset functions, and the user equipment determines, according to a preset, input information of the K preset functions.
  • the method further includes: the user equipment receiving the K and M sent by the base station The value.
  • the indication field may be sent periodically or sent according to an event trigger, where the user equipment indicates that the user equipment receives and reads the downlink information in different first time periods, the base station may maintain The M value is unchanged, only the K value is updated and the updated K value is sent to the user equipment; or the base station can keep the K value unchanged, only update the M value and send the updated M value to the user equipment; Alternatively, the K value and the M value are updated simultaneously, and the updated K value and M value are sent to the user equipment. In this case, if the user equipment only receives the value of K, it is determined that the value of M is the same as the value of the last received M. Similarly, if the user equipment only receives the value of M, it is determined that the value of K is the same as the value of K received last time.
  • the base station determines that paging signaling needs to be sent to the user equipment 1 and the user equipment 2 at the paging moment within the first time period. It is assumed that for each user equipment to determine a random number using 2 random functions, the base station can use any one or more of the identity of the user equipment, the system superframe number, the frame number, and the subframe number as the input of the random function.
  • the identifier of the user equipment may be a Temporary Logical Link Identifier (TLLI), an International Mobile Subscriber Identification Number (IMSI), and a System Architecture Evolution (System Architecture Evolution).
  • SAE Any one or more of SAE-Temporary Mobile Subscriber Identit (S-TMSI).
  • the base station can use the identifier of the user equipment 1 as the input of the random function 1 of the user equipment 1 to obtain the random number 1 of the user equipment 1; the base station can also use the user equipment 1 identifier as the input of the random function 2 of the user equipment 1 Get the random number 2 of the user equipment 1.
  • the base station can use the IMSI of the user equipment 1 as the input of the random function 1 of the user equipment 1 to obtain the random number 1 of the user equipment 1; the base station can also use the TLLI of the user equipment 1 as the input of the random function 2 of the user equipment 1. Get the random number 2 of the user equipment 1.
  • the base station can also obtain the random number 1 and the random number 2 corresponding to the user equipment 2 by using the random function of the user equipment 2.
  • the random function and its input parameters are all pre-specified, that is, the base station and the user equipment use the same rule mapping to obtain the corresponding random number.
  • the base station may determine two bit positions corresponding to two random numbers of each user equipment in the indication field of the bit of length M.
  • the random number 1 of the user equipment 1 corresponds to the first bit position and the random number 2 of the user equipment 1 corresponds to the third bit position; the random number 1 of the user equipment 2 corresponds to the second bit position and the user equipment 2
  • the random number 2 corresponds to the third bit position.
  • the values of the 1, 2, and 3 bits in M can be set to affirmative.
  • the initial state of the M-bit bits in the indication field is negative. For example, using 0 for negative and 1 for affirmation indicates that the 0th to 5th bits in the initial state of the field are 0, that is, 000000.
  • the first, second, and third bits can be set to 1, indicating that the field status changes to 011100. After the base station sets the indication field, the base station sends the set indication field to the four user equipments.
  • a method of mapping K numbers outputted from K preset functions to K bit positions in the M bit indication field is as follows. It is assumed that user equipment 1 and user equipment 2 are paged, and their corresponding TLLI numbers are recorded as TLLI_1 and TLLI_2, respectively.
  • TLLI hash
  • Hash represents a hash function
  • SuperFrame number represents a cascading of the TLLI and the SuperFrame number corresponding to the first time period.
  • the output of the Hash() function is an 8-bit long number (ranging from 0 to 255).
  • the base station respectively takes the modulo value for M, and the output after obtaining the modulo value is 2 and 3 respectively, then the base station will position the 2nd bit and the 3rd bit.
  • the position is set to be positive (assuming 1 is positive); therefore, the base station can know that the user equipment 1 should set the first and third bit positions according to the TLLI of the user equipment 1 and the user equipment 2 and the SuperFrame Number corresponding to the first time period.
  • the user equipment 2 should set the second bit position and the third bit position, so that the combined indication field should set the first, second and third bit positions, and the set position is 011100.
  • FIG. 4 is a schematic diagram of a method for transmitting information according to an embodiment of the present invention.
  • the method shown in FIG. 4 is based on paging signaling.
  • the user equipment may determine K random numbers by using K preset random functions, and determine K bit positions corresponding to the K random numbers in the indication field, and according to values of K bits. It is determined whether a paging occasion (Paging Occasion) within the first time period is scheduled. It can be understood that the random function used by the user equipment and the input of the random function are the same as the random function used by the base station and the input of the random function.
  • the user equipment 1 can determine that the bit position corresponding to the random number 1 is the first bit position, and the bit position corresponding to the random number 2 is the third bit position.
  • the user equipment 2 can determine that the bit position corresponding to the random number 1 is the second bit position, and the bit position corresponding to the random number 2 is the third bit position.
  • the user equipment 1 reads that the two bit positions are set to be positive by reading the first bit position and the third bit position in the indication field, and the user equipment 1 can determine that the corresponding paging occasion may be scheduled. It may be determined that the paging information needs to be further read on the paging occasion corresponding to the first time period to read the corresponding paging request message.
  • the user equipment 2 reads that the two bit positions and the third bit position in the indication field, and that both bit positions are set to be positive, the user equipment 2 can determine the paging occasion in the first time period. May be scheduled, can be determined The paging occasion corresponding to the first time period needs to further read the scheduling information to match and read the corresponding paging request message. It is assumed that among the N user equipments, the user equipment 3, the user equipment 4, and the user equipment 5 receive the read indication information during the first time period. The user equipment 3 determines that the bit position corresponding to the random number 1 is the third bit position, and the bit position corresponding to the random number 2 is the fourth bit position, and the user equipment 3 reads the indication field to find that the third bit position is affirmative. The 4th bit position is negative.
  • the user equipment 3 determines that the paging occasions within the corresponding first time period are not scheduled.
  • the user equipment 4 determines that the bit position corresponding to the random number 1 is the fourth bit position, and the bit position corresponding to the random number 2 is the fifth bit position, the user equipment 4 finds the indication by reading the indication field.
  • the 4th bit position and the 5th bit position in the field are both negative.
  • the user equipment 4 can determine that all paging occasions within the first time period are not scheduled.
  • the user equipment 5 determines that the bit position corresponding to the random number 1 is the first bit position, and the bit position corresponding to the random number 2 is the second bit position, the user equipment 5 finds the indication field by reading the indication field.
  • Both the first bit position and the second bit position are positive.
  • the user equipment 5 considers that it may be scheduled in the paging occasion in the first time period, and may determine that the paging occasion in the corresponding first time period needs to further read the scheduling information to determine whether it is Paging.
  • the user equipment 1 and the user equipment 2 may read the physical downlink control channel (Physical Downlink Control Channel, referred to as PDCCH) in the first time period, when it is determined that the paging occasion may be scheduled in the first time period.
  • PDCCH Physical Downlink Control Channel
  • PDSCH Physical Downlink Shared Channel
  • User equipment 3 and user equipment 4 may determine that all paging occasions within the first time period will certainly not be paged, so the receiver may be turned off to continue into sleep mode without reading any PDCCH and PDSCH.
  • the user equipment 5 is not actually paged in the first time period (according to the assumption that only the user equipment 1 and the user equipment 2 are paged in the first time period), but due to the two bit positions corresponding to the user equipment 5 (The first bit position and the second bit position) coincide with a certain bit position of the user equipment 1 and the user equipment 2, and thus belong to the case of a false alarm.
  • the user equipment 5 considers that it may be paged in the first time period, and therefore checks the PDCCH in the first time period, and after checking all possible PDCCHs, finds that it is not paged.
  • the user equipment 1 and the user equipment 2 belong to the first type of user equipment
  • the user equipment 3 and the user equipment 4 belong to the second type of user equipment
  • the user equipment 5 belongs to the third type of user equipment.
  • K preset function output K
  • the method of mapping the number to the K bit positions in the M bit indication field is as follows.
  • the indication field is 011100.
  • User equipment 1 and user equipment 2 in the first type of user equipment are paged, and their corresponding TLLI numbers are recorded as TLLI_1 and TLLI_2, respectively.
  • two functions preset between the base station and the user equipment can be defined as Hash (TLLI) and Hash (TLLI
  • the output of the Hash() function is an 8-bit long number (ranging from 0 to 255).
  • the user equipment 1 generates two numbers of 8 bits long according to two preset functions Hash (TLLI_1) and Hash (TLLI_1
  • the user equipment 1 respectively obtains a modulo value for M, and the outputs after obtaining the modulo value respectively are 1 and 3. Therefore, the user equipment 1 determines whether to read the subsequent one by reading the first bit position and the third bit position in the indication field.
  • the PDCCH and PDSCH to read the paging message the first bit position and the third bit position in the indication field indicate that both bit positions are set to be positive, then the user equipment 1 can determine that the corresponding paging occasion may be scheduled. It may be determined that the paging information needs to be further read to read the corresponding paging request message on the paging occasion corresponding to the first time period.
  • the user equipment 2 generates two numbers of 8 bits long according to two preset functions Hash (TLLI_2) and Hash (TLLI_2
  • the rule is that the user equipment 2 respectively takes the modulo value for M, and the output after obtaining the modulo value is 2 and 3 respectively, so the user equipment 2 determines whether to read by reading the second bit position and the third bit position in the indication field.
  • the 2nd bit position and the 3rd bit position in the indication field know that both bit positions are set to be positive, then the user equipment 2 can determine the corresponding paging occasion It may be scheduled to determine that the paging information needs to be further read to read the corresponding paging request message on the paging occasion corresponding to the first time period.
  • the corresponding TLLI numbers of the corresponding TLLI numbers are recorded as TLLI_3 and TLLI_4, respectively.
  • the user equipment 3 generates two numbers of 8 bits long according to two preset functions Hash (TLLI_3) and Hash (TLLI_3
  • the user equipment 3 respectively obtains a modulo value for M, and the output after obtaining the modulo value respectively is 3 and 4. Therefore, the user equipment 3 determines whether to read the subsequent one by reading the third bit position and the fourth bit position in the indication field.
  • the user equipment 4 generates two numbers of 8 bits long according to two preset functions Hash (TLLI_4) and Hash (TLLI_4
  • the preset rule is that the user equipment 4 respectively takes the modulo value for M, and the output after obtaining the modulo value is 4 and 5 respectively, so the user equipment 4 determines whether to read by reading the 4th bit position and the 5th bit position in the indication field. Subsequent PDCCH and PDSCH are taken to read the paging message: the user equipment 4 finds that the fourth bit position and the fifth bit position in the indication field are both negative, in which case the user equipment 4 can determine the first time.
  • Hash TLLI_4
  • the corresponding TLLI number is TLLI_5.
  • the user equipment 5 generates two numbers of 8 bits long according to two preset functions Hash (TLLI_5) and Hash (TLLI_5
  • the user equipment 5 respectively obtains a modulo value for M, and the output after obtaining the modulo value respectively is 1 and 2.
  • the user equipment 5 is not actually paged in the first time period (according to the assumption that only the first time period User equipment 1 and user equipment 2 are paged), but due to the two bit positions (first bit position and second bit position) corresponding to user equipment 5, just a bit position with user equipment 1 and user equipment 2 Coincidence, so it is a false alarm.
  • the user equipment 5 considers that it may be paged in the first time period, and therefore checks the PDCCH in the first time period, and after checking all possible PDCCHs, finds that it is not paged. .
  • FIG. 5 is a schematic diagram of another method for transmitting information according to an embodiment of the present invention.
  • the method shown in FIG. 5 is exemplified by a user equipment that sends a Random Access Channel (RACH) message.
  • RACH Random Access Channel
  • the user equipment sends a random access request message to the base station on the preset RACH resource, and the base station replies to the random access request response message in one or more frames after the RACH resource; otherwise, the user equipment considers the random access request message Not being responded.
  • RACH Random Access Channel
  • the base station determines that a random access response message can be sent to the user equipment 1 and the user equipment 2 within a certain frame. It is assumed that, without loss of generality, for each user equipment to determine a random number using two random functions, the base station may use the random number in the random access request sent by the user equipment as at least one input parameter of the random function to determine the user equipment 1 And the random number of user equipment 2. After determining the random numbers of the user equipment 1 and the user equipment 2, respectively, the base station may determine two bit positions corresponding to two random numbers of each user equipment in the indication field of the bit of length M.
  • the random number 1 of the user equipment 1 corresponds to the first bit position and the random number 2 of the user equipment 1 corresponds to the third bit position; the random number 1 of the user equipment 2 corresponds to the second bit position and the random number of the user equipment 2 2 corresponds to the third bit position.
  • the values of the 1, 2, and 3 bits in M can be set to affirmative.
  • the initial state of the M-bit bit position in the indication field is negative. For example, using 0 for negative and 1 for affirmation indicates that the 0th to 5th bits in the initial state of the field are 0, that is, 000000.
  • the first, second, and third bit positions can be set to 1, indicating that the field status changes to 011100.
  • the base station After setting the indication field, the base station sends the set indication field to all user equipments that may need to read the random access response in the frame.
  • the user equipment may determine K random numbers by using K preset random functions, and determine K bit positions corresponding to the K random numbers in the indication field, and according to values of K bits. Determining whether the frame that can be used to send the random access response message is scheduled to feed back the random access response message. It can be understood that the random function used by the user equipment and the input of the random function are the same as the random function used by the base station and the input of the random function. In this case, the user equipment 1 can determine that the bit position corresponding to the random number 1 is the first bit position, and the bit position corresponding to the random number 2 is the third bit position.
  • the user equipment 2 can determine that the bit position corresponding to the random number 1 is the second bit position, and the bit position corresponding to the random number 2 is the third bit position. At the same time, the user equipment 1 knows that both the first bit position and the third bit position are set to be positive by reading the indication field, and the user equipment 2 reads the indication field to know that both the second bit position and the third bit position are known. If set to be positive, user equipment 1 and user equipment 2 may determine that they may be fed back a random access response message in the frame, and therefore determine that the PDCCH needs to be read to determine whether a random access response message is sent to Yourself.
  • the user equipment 3 determines that the bit position corresponding to the random number 1 is the third bit position, and the bit position corresponding to the random number 2 is the fourth bit position, the user equipment 3 learns the third bit position by reading the indication field. To be sure, the 4th bit is negative. In this case, the user equipment 3 determines that the base station does not send the random access response message to the user equipment 3 in the frame, and therefore the user equipment 3 does not need to read the subsequent PDCCH and the related PDSCH. Similarly, it is assumed that the user equipment 4 determines that the bit position corresponding to the random number 1 is the fourth bit position, and the bit position corresponding to the random number 2 is the fifth bit position, the user equipment 4 learns the fourth bit by reading the indication field.
  • the user equipment 4 may determine that the base station does not send the RACH response message to the user equipment 4 in the frame, and thus may stop reading the PDCCH that may carry the random access response or the random access response scheduling information.
  • User equipment 1 and user equipment 2 determine that the base station may send a random access response message to the frame in the frame.
  • the PDCCH or PDCCH of the frame and its corresponding PDSCH resource are continuously read to obtain a random access response message.
  • the user equipment 3 and the user equipment 4 can determine that the base station does not send the random access response message in the frame that can be used to send the random access response message, so the user equipment 3 and the user equipment 4 can skip the frame.
  • the PDCCH and its corresponding PDSCH are not read.
  • the user equipment 1 and the user equipment 2 belong to the first type of user equipment
  • the user equipment 3 and the user equipment 4 belong to the second type of user equipment.
  • the indication field is 011100.
  • the random numbers in the corresponding random access request messages are r1 and r2, respectively.
  • two functions preset between the base station and the user equipment can be defined as Hash(r) and Hash(r
  • the output of the Hash() function is an 8-bit long number (ranging from 0 to 255).
  • the user equipment 1 generates two numbers of 8 bits long according to two preset functions Hash(r1) and Hash(r1
  • the user equipment 1 respectively takes the modulo value for M, and obtains the modulo value output respectively as 1 and 3.
  • the user equipment 1 determines that the K (2) bit positions corresponding to the user equipment 1 are the first bit position and the first 3-bit position; similarly, the user equipment 2 generates two numbers of 8 bits long according to two preset functions Hash(r2) and Hash(r2
  • the second bit position and the third bit position are; for the user equipment 3 and the user equipment 4 in the second type of user equipment, the random numbers in the corresponding random access request message are r3 and r4, respectively.
  • the user equipment 3 generates two numbers of 8 bits long according to two preset functions Hash(r3) and Hash(r3
  • the user equipment 3 respectively obtains a modulo value for M, and the outputs after obtaining the modulo value respectively are 3 and 4, so the user equipment 3 determines that the K (2) bit positions corresponding to the user equipment 3 are the third bit position and the 4-bit position; similarly, the user equipment 4 generates two numbers of 8 bits long according to two preset functions Hash(r4) and Hash(r4
  • FIG. 6 is a schematic diagram of another method for transmitting information according to an embodiment of the present invention.
  • the method shown in FIG. 6 is an example of ordinary uplink and downlink scheduling.
  • the random number 1 of the user equipment 1 corresponds to the first bit position and the random number 2 of the user equipment 1 corresponds to the third bit position; the random number 1 of the user equipment 2 corresponds to the second bit position and the user equipment 2
  • the random number 2 corresponds to the third bit position.
  • the values of the 1, 2, and 3 bits in M can be set to affirmative.
  • the initial state of the M-bit bit position in the indication field is negative. For example, using 0 for negative and 1 for affirmation indicates that the 0th to 5th bits in the initial state of the field are 0, that is, 000000.
  • the first, second, and third bit positions can be set to 1, indicating that the field status changes to 011100.
  • the base station After the base station sets the indication field, the base station sends the set indication field to all possible scheduled user equipments in the first time period.
  • the user equipment may determine K random numbers by using K preset random functions, and determine values of K bits corresponding to the K random numbers in the indication field, and according to K bits. The value determines whether the scheduling occasion is scheduled. It can be understood that the random function used by the user equipment and the input of the random function are the same as the random function used by the base station and the input of the random function. In this case, the user equipment 1 can determine that the bit corresponding to the random number 1 is the first bit position, and the bit corresponding to the random number 2 is the third bit position.
  • the user equipment 2 can determine that the bit corresponding to the random number 1 is the second bit position, and the bit corresponding to the random number 2 is the third bit position. At the same time, the user equipment 1 can learn that the first bit position and the third bit position are both set to be positive by using the indication field, and the user equipment 2 knows that the second bit and the third bit position are both set to be positive by using the indication field. Then, the user equipment 1 and the user equipment 2 may determine that the scheduling occasion may be scheduled, and further read and check the scheduling information in the PDCCH.
  • the user equipment 3 determines that the bit corresponding to the random number 1 is the third bit position, and the bit corresponding to the random number 2 is the fourth bit position, the user equipment 3 can determine that the third bit in the indication field is affirmative, 4 bits are negative. In this case, the user equipment 3 determines that the scheduling opportunity is not scheduled.
  • the user equipment 4 determines that the bit corresponding to the random number 1 is the fourth bit. If the bit corresponding to the random number 2 is the 5th bit position, the user equipment 4 can determine that the 4th bit and the 5th bit in the indication field are both negative. In this case, the user equipment 4 can determine that the scheduling opportunity is not scheduled.
  • the user equipment 1 and the user equipment 2 determine that the PDCCH in the scheduling occasion is read and demodulated in a case where it is determined that the scheduling occasion may be scheduled, by reading the corresponding scheduling information carried on the PDCCH in the actual scheduling, further based on
  • the indication of the scheduling information receives downlink data transmitted by the base station on the downlink data channel (such as PDSCH) or uplink data on the uplink data channel (such as PUSCH).
  • User equipment 3 and user equipment 4 may determine that the base station will certainly not schedule itself within the scheduling opportunity, so user equipment 3 and user equipment 4 may skip the scheduling opportunity.
  • the user equipment 1 and the user equipment 2 belong to the first type of user equipment
  • the user equipment 3 and the user equipment 4 belong to the second type of user equipment.
  • the indication field is 011100.
  • the corresponding scheduling user equipment IDs are C-RNTI_1 and C-RNTI_2.
  • two functions preset between the base station and the user equipment may be defined as Hash (C-RNTI_1) and Hash (C-RNTI_1
  • Hash() represents a hash function
  • SuperFrame number Indicates a concatenation of the C-RNTI and the SuperFrame number corresponding to the first time period.
  • the output of the Hash() function is an 8-bit long number (ranging from 0 to 255).
  • the user equipment 1 generates two numbers of 8 bits long according to two preset functions Hash (C-RNTI_1) and Hash (C-RNTI_1
  • the user equipment 1 respectively takes the modulo value for M, and the output after obtaining the modulo value respectively is 1 and 3. Therefore, the user equipment 1 determines that the K (2) bit positions corresponding to the user equipment 1 are the first. The bit position and the third bit position; similarly, the user equipment 2 generates two numbers of 8 bits long according to two preset functions Hash (C-RNTI_2) and Hash (C-RNTI_2
  • Hash C-RNTI_22
  • the K (2) bit positions are the 2nd bit position and the 3rd bit position; for the user equipment 3 and the user equipment 4 in the second type of user equipment, the corresponding scheduling user equipment IDs are C-RNTI_3 and C- RNTI_4.
  • the user equipment 3 generates two numbers of 8 bits long according to two preset functions Hash (C-RNTI_3) and Hash (C-RNTI_3
  • the user equipment 3 respectively obtains a modulo value for M, and obtains the modulo value output respectively as 3 and 4, so the user equipment 3 determines K (2) bit positions corresponding to the user equipment 3 as the first 3 bit position and 4th bit position; similarly, the user equipment 4 generates two numbers of 8 bits long according to two preset functions Hash (C-RNTI_4) and Hash (C-RNTI_4
  • the K (2) bit positions are the 4th bit position and the 5th bit position.
  • the base station may separately generate different indication fields for different types of downlink information, and the M value and the K value of the indication field of each type of downlink information may be different, and each downlink information is The time period corresponding to the indication field may also be different.
  • a base station needs to generate different indication fields for three types of downlink information: paging signaling, a random access response for answering an uplink random access request, and normal scheduling signaling (ie, for scheduling downlink user equipment acceptance). Signaling of downlink data or signaling for instructing user equipment to transmit uplink data.
  • the indication field corresponding to the paging signaling is the indication field 1, which corresponds to M1 and K1; the indication field corresponding to the random access response message is the indication field 2, which corresponds to M2 and K2; the indication field corresponding to the common scheduling signaling is an indication.
  • Field three which corresponds to M3 and K3.
  • the values of M1, M2, and M3 may be different, and the values of K1, K2, and K3 may also be different.
  • the indication field 1, the indication field 2 and the indication field 3 may respectively correspond to different time periods. It will be understood that M1, M2 and M3 and K1, K2 and K3 are all positive integers greater than one.
  • Different indication fields of different types of downlink information may be sent in the same downlink broadcast message or a common downlink control unit.
  • the paging message, the random access response for answering the uplink random access request, and the signaling for scheduling the downlink user equipment to receive the downlink data may be used to indicate that the user equipment sends the uplink.
  • the signaling of the data is jointly indicated by the same M-bit indication field to indicate whether multiple downlink information is transmitted within the first time period.
  • FIG. 7 is a schematic diagram of another method for transmitting information according to an embodiment of the present invention. Without loss of generality, the method shown in FIG. 7 is exemplified by a paging message, a random access response, and a normal uplink and downlink scheduling.
  • the first type of user equipment is a user equipment to which downlink information is sent by the base station in the first time period, and the user equipment 1 is included in the example shown in the figure (the UE 1 is the identifier of the user equipment 1).
  • TLLI user equipment a
  • Ra is a random number in the transmitted random access request message
  • user equipment m UE m is an identifier for user equipment m for scheduling, such as C-RNTI.
  • the user equipment 1 is a user equipment that is paged in the IDLE state in the first time period; the user equipment a sends a random access request message before the first time period, and the random access response message is in the first time.
  • the user equipment is sent to the user equipment a in the segment; the user equipment m is the user equipment in the connected state in the S1 architecture or the user equipment in the Gb architecture in which the Ready Timer has not timed out, and the base station schedules the user equipment m to send the downlink to the user equipment in the first time period. Data or instruct it to send upstream data.
  • the base station can use the identifier of the user equipment or the random number in the random access as the input of the random function to determine the first type of user.
  • the random number corresponding to the device.
  • the base station may determine two bit positions corresponding to two random numbers of each first type of user equipment in the indication field of the bit of length M.
  • the random number 1 of the user equipment 1 corresponds to the first bit position and the random number 2 of the user equipment 1 corresponds to the second bit position; the random number 1 of the user equipment a corresponds to the second bit position and the user equipment a
  • the random number 2 corresponds to the seventh bit position; the random number 1 of the user equipment m corresponds to the third bit position and the random number 2 of the user equipment m corresponds to the seventh bit position.
  • the values of the 1, 2, 3, and 7 bits in M can be set to affirmative. It can be understood that the initial state of the M-bit bit position in the indication field is negative.
  • the base station After setting the indication field, the base station sends the set indication field to the user equipment that may be paged, answered the random access response, and scheduled in the first time period.
  • All the user equipments that can be paged by the base station in the first time period, send random access responses, and scheduled, will acquire and check the contents of the indication field.
  • the user equipment may determine K random numbers by using K preset random functions, and determine values of K bits corresponding to the K random numbers in the indication field, and according to K bits.
  • the value determines whether the base station sends downlink information to the user equipment in the first time period to determine whether further downlink information sent by the base station needs to be read. It can be understood that the random function used by the user equipment and the input of the random function are the same as the random function used by the base station and the input of the random function.
  • first type of user equipment the second type of user equipment, and the third type of user equipment are respectively illustrated.
  • First type of user equipment in this case, user equipment 1, user equipment a and user equipment m Belongs to the first type of user equipment.
  • the user equipment 1 can determine that the bit corresponding to the random number 1 is the first bit position, and the bit corresponding to the random number 2 is the second bit position.
  • the user equipment a can determine that the bit corresponding to the random number 1 is the second bit position, and the bit corresponding to the random number 2 is the seventh bit position.
  • the user equipment m can determine that the bit corresponding to the random number 1 is the third bit position, and the bit corresponding to the random number 2 is the seventh bit position.
  • the user equipment 1 can know that both the first bit position and the second bit position are set to be positive by using the indication field, and the user equipment a knows that the second bit and the third bit position are both set to be positive by the indication field.
  • the user equipment m knows that the third bit and the seventh bit position are both set to be positive by using the indication field, and the user equipment 1, the user equipment a, and the user equipment m may determine that the base station may send downlink information in the first time period. Give them, so the downlink information will be read further.
  • the PDCCH is continuously read to obtain the paging request message; for the user equipment a, the PDCCH is continuously read, and the random access corresponding message sent to it is found; for the user equipment m, the reading continues.
  • the PDCCH search scheduling information is obtained, and a scheduling message corresponding to the user equipment m is obtained, so that the PDSCH is further read or the uplink data is sent on the indicated PUSCH.
  • the second type of user equipment user equipment b and user equipment n belong to the second type of user equipment. It is assumed that the user equipment n is a connected state user equipment in the user equipment, which is not scheduled by the base station in the first time period, but the connected state user equipment determines that the bit corresponding to the random number 1 is the sixth bit position. The bit corresponding to the random number 2 is the ninth bit position, and the user equipment n can determine that the sixth bit and the ninth bit in the indication field are both negative. In this case, the user equipment n may determine that the scheduling opportunity in the first time period is not scheduled by the base station.
  • the user equipment b is a user equipment that initiates random access in the user equipment, and the base station does not feed back the random access response message by the base station in the first time period, but the connected state user equipment determines that the random number is corresponding.
  • the bit of 1 is the third bit position
  • the bit corresponding to the random number 2 is the fourth bit position
  • the user equipment n can determine that the third bit in the indication field is affirmative, and the fourth bit is negative.
  • the user equipment b may determine that the base station does not feed back the random access response during the first time period, and thus stops reading the PDCCH.
  • the third type of user equipment belongs to the third type of user equipment. It is assumed that the user equipment 2 is an IDLE state user equipment in the user equipment, and a certain paging occasion is included in the first time period. It is assumed that the user equipment 2 determines that the bit corresponding to the random number 1 is the first bit position, and the bit corresponding to the random number 2 is the second bit position, since the two bits have been respectively used by the user equipment 1 in the first type of user equipment And the user equipment a is set, then the user equipment 2 determines the indication field The first bit and the second bit in the middle are both positive.
  • the user equipment 2 may determine that the base station may send a paging request message to the user equipment 2 during the first time period, so the PDCCH is further read and read, and whether there is a paging corresponding to itself. Message. Since the base station does not actually send a paging request message to the user equipment 2 in the first time period, the user equipment 2 will not find any paging message matching its own identity, and thus will eventually stop reading the subsequent channel.
  • the user equipment of the first type is the user equipment that the base station actually sends information, and the solution of the invention ensures that all the first type of user equipment does not miss any downlink information sent to itself;
  • the second type of user equipment is the base station.
  • the user equipment that does not send the downlink information, and the second type of user equipment avoids reading all subsequent downlink information (such as PDCCH) by obtaining the indication field, thereby saving power consumption;
  • the third type of user equipment the base station is not in the first
  • the downlink information is sent to the third type of user equipment in the time range, but the third type of user equipment is a false alarm.
  • the third type of user equipment After acquiring and checking the indication field, the third type of user equipment still reads the downlink channel such as the PDCCH, and does not achieve the saving function. The purpose of consumption, but did not introduce other overhead.
  • the proportion of the third type of user equipment that is, the false alarm rate, can be controlled below a predetermined threshold.
  • the values of K and M are related to the average load in the first time period, that is, the average number of user equipments of the first type that need to be scheduled and sent downlink information in the first time period (assumed to be P' , where P' is the average number of first-class user devices).
  • P' the average number of first-class user devices.
  • the value of M should be increased.
  • the value of M can be appropriately reduced.
  • the K value is determined, if the load is heavy, the P' user equipments are likely to set most of the bit positions in the M bits for a certain time. At this time, for the first time period, it is not scheduled or sent by the base station.
  • the corresponding K bit positions will be set to a higher probability (this is the false alarm). Therefore, when the load becomes heavy, the number of bits of the indication field (ie, the value of M) should be appropriately increased.
  • the K value its optimal value is actually related to the average load number P' and the M value. Therefore, when the average load changes, the base station or other network device should be allowed to send and update K values and/or M values for all user equipments that need to read the indication field.
  • the base station can also adjust the values of K and/or M as needed. If the number of user equipments to be scheduled (assuming P) is relatively small, the value of M can be appropriately reduced. If the number of user equipments to be scheduled is relatively large, the value of increasing M may be appropriately increased to reduce the false alarm probability. Correspondingly, the base station can obtain an optimal or better value of K corresponding to different M values and the number of user equipments that need to be scheduled. For example, the K value can be taken as a typical value. Of course, optionally, in order to reduce the implementation complexity, K can also simply fix 2 or 3.
  • the base station can send the determined value of M to all user equipments that need to read the indication field.
  • the base station may also send the K value to all user equipments that need to read the indication field.
  • the base station can be sent to the user equipments by means of broadcast, and the base station can also directly send the user equipments.
  • the sending of the indication field may be performed by using a broadcast channel (Physical Broadcast Channel, PBCH for short) or periodically by using a common downlink control unit (common DCI) or a common PDCCH message on the PDCCH.
  • PBCH Physical Broadcast Channel
  • common DCI common downlink control unit
  • FIG. 8 is a structural block diagram of a base station according to an embodiment of the present invention. As shown in FIG. 8, the base station 800 includes a determining unit 801 and a transmitting unit 802.
  • the determining unit 801 is configured to determine to send downlink information to P user equipments in the at least one user equipment in the first time period.
  • the determining unit 801 is further configured to generate, according to the determined P user equipments, an indication field, where the indication field includes M bits, each of the at least one user equipment respectively corresponding to K of the M bits a bit, the K bits are used to indicate whether the corresponding user equipment needs to receive and read the downlink information sent by the base station in the first time period, where M is a positive integer greater than 1, and K is greater than 1 and less than M.
  • M is a positive integer greater than 1
  • K is greater than 1 and less than M.
  • a positive integer, P is an integer greater than or equal to zero.
  • the sending unit 802 is configured to send the indication field to the at least one user equipment.
  • the base station 800 shown in FIG. 8 may indicate, by using an indication field, downlink information that each user equipment in the user equipment transmits to the base station in the first time period.
  • the user equipment receives the indication field from the base station, if the user equipment determines that the downlink information does not need to be received and read in the first time period, the user equipment may not listen to and receive the corresponding channel. In this way, the power consumption of the user equipment can be reduced to achieve the purpose of power saving.
  • the at least one user equipment may include the first type of user equipment and/or the second type of user equipment.
  • the P user devices in the at least one user equipment may be referred to as the first type user equipment.
  • the first type of user equipment is a type of user equipment that the base station determines to send downlink information to the at least one user equipment in a first time period. For example, if the downlink information to be sent is a paging message in the first time period, the base station may determine, according to the signaling of the core network, the user equipment that needs to be paged in the first time period, thereby determining the user equipments. For the first type of user equipment.
  • the base station determines, according to the scheduling algorithm, the user equipment scheduled in the first time period, As a first type of user equipment; for example, assuming that the first time period is a period of time after the uplink random access resource, and the downlink information that needs to be sent is used to respond to the user equipment.
  • the base station selects a user equipment corresponding to the random access request message and accesses the user equipment in the first time period according to the availability of the uplink resource.
  • the random access response message the base station determines that the user equipment is the first type of user equipment.
  • the second type of user equipment is a user equipment to which the base station does not send downlink information during the first time period.
  • the base station 800 is a serving base station of the connected user equipment.
  • the base station 800 is the base station where the camped cell of the user equipment in the idle state is located.
  • the determining unit 801 can set the values of the K bits corresponding to each user equipment of the P user equipments to be positive according to the P user equipments.
  • the K bit positions corresponding to each user equipment of the at least one user equipment are pre-configured by the determining unit 801, and the sending unit 801 may send the configuration result to the corresponding user equipment.
  • the K preset functions are K preset random functions, and the K numbers are K random numbers.
  • the preset function is a random function
  • the generated number is a random number, which can cause different user equipments to generate corresponding numbers with randomness, thereby reducing the probability of false alarms.
  • the K preset functions are K preset hash functions.
  • the K preset functions are K hash functions or the hash function modulates M values.
  • the K preset functions are functions that equally map the input of each of the preset functions to M output values.
  • the type of the downlink information is any one of the following: paging signaling, a random access response for answering an uplink random access request, and a message for scheduling downlink user equipment to receive downlink data.
  • the input information of the K preset functions of the i-th user equipment may correspond to the type of the downlink information. That is to say, the determining unit 801 can determine input information of the K preset functions of the i-th user equipment according to the type of the downlink information.
  • the input information of the K preset functions of the i-th user equipment includes at least one of the following: an identifier of the first type of user equipment corresponding to the paging signaling And system time information.
  • the system time information includes any one or more of the following: a system superframe number, a system frame number, and a system subframe number.
  • the input information of the K preset functions of the i-th user equipment includes at least one of the following: the random access request Identification information and system time information in the middle.
  • the system time information includes any one or more of the following: a system superframe number, a system frame number, and a system subframe number.
  • the identifier information in the random access request is a random number included in the random access request or an index value corresponding to the access sequence corresponding to the random access request.
  • the K preset functions of the ith user equipment includes at least one of the following: an identifier of the first type of user equipment and system time information corresponding to the signaling.
  • the system time information includes any one or more of the following: a system superframe number, a system frame number, and a system subframe number.
  • input information of the K preset functions of the i-th user equipment may correspond to a state in which the i-th user equipment is located. That is to say, the determining unit 801 can determine input information of the K preset functions of the i-th user equipment according to the state of the i-th user equipment.
  • the input information of the K preset functions of the ith user equipment includes at least one of the following: an international mobile of each of the first type of user equipments.
  • An International Mobile Subscriber Identification Number (IMSI) a temporary logical link identifier (Temporary Logical Link Identifier) of the first type of user equipment; where the i-th user equipment is in an air interface connection state,
  • the input information of the K preset functions of the i-th user equipment includes a connection state identifier of each of the first type of user equipments.
  • the connection state identifier may be a Cell Radio Network Temporary Identifier (C-RNTI).
  • the determining unit 801 may further determine, according to a preset, input information of the K preset functions of the i-th user equipment.
  • the determining unit 801 determines, according to a preset rule, the input information of the K preset functions of the i-th user equipment, including: pre-specifying the identification information of the user equipment according to a preset (for example, IMSI or TLLI) as at least one input information as a preset function; according to a preset, further, for some or all K preset functions, time information may also be used as input function of a preset function; according to a preset, further to the part Or all K preset functions, the index number of the type of the downlink information may also be used as the input information of the preset function.
  • a preset for example, IMSI or TLLI
  • the determining unit 801 is further configured to determine the value of K and the value of M.
  • the sending unit 802 is further configured to send the value of the K and the value of the M to the user equipment.
  • the sending unit 802 is specifically configured to send the indication field to the user equipment on the broadcast channel PBCH and/or the physical downlink control channel PDCCH.
  • FIG. 9 is a structural block diagram of a user equipment according to an embodiment of the present invention.
  • the user equipment 900 includes a receiving unit 901 and a determining unit 902.
  • the receiving unit 901 is configured to receive an indication field of a length of M bits sent by the base station.
  • the determining unit 902 is configured to determine a position of the M bits corresponding to the K bits of the user equipment, where M is a positive integer greater than 1, and K is a positive integer greater than 1.
  • the determining unit 902 is further configured to determine, according to the value of the K bits, whether to receive and read the downlink information sent by the base station in the first time period.
  • the user equipment 900 shown in FIG. 9 may determine, according to the indication field, whether it needs to receive and read the downlink information sent by the base station in the first time period. If the user equipment determines that the downlink information sent by the base station needs to be received and read, the corresponding channel is monitored in the first time period. If the user equipment determines that the downlink information sent by the base station is not required to be received and read, the corresponding channel may not be monitored during the first time period. At the same time, since a plurality of bit positions are used to indicate whether a user equipment needs to receive and read the scheduling control information and the corresponding data channel in the first time period, unnecessary false alarms can be reduced.
  • the determining unit 902 specifically determines input information of the K preset functions; and generates K numbers corresponding to the user equipment according to the input information of the K preset functions and the K preset functions, where the K The number is used to indicate the position of the K bits corresponding to the user equipment in the M bits; and the K bit positions corresponding to the K number among the M bits are determined.
  • the K preset functions are K preset random functions, and the K numbers are K random functions. number.
  • the K preset functions are K preset hash functions.
  • the K preset functions are K hash functions or the hash function modulates M values.
  • the K preset functions are functions that equally map the input of each of the preset functions to M output values.
  • the determining unit 902 is specifically configured to determine whether the value of the K bits is affirmative, and if it is determined that the value of the K bits is positive, determining to receive and read the sent by the base station in the first time period. And determining, by the downlink information, that at least one of the values of the K bits is negative, determining that the downlink information sent by the base station is not received and read in the first time period.
  • the downlink information sent by the base station in the first time period is any one of the following: paging signaling, a random access response for answering the uplink random access request, and scheduling the downlink user equipment to receive downlink data.
  • Signaling signaling for indicating that the user equipment sends uplink data.
  • the input information of the K preset functions corresponds to the type of the downlink information. That is to say, the determining unit 902 can determine the input information of the K preset functions according to the type of the downlink information.
  • the input information of the K preset functions of the i-th user equipment includes at least one of the following: an identifier of the user equipment corresponding to the paging signaling, and a system time. information.
  • the system time information includes any one or more of the following: a system superframe number, a system frame number, and a system subframe number.
  • the identifier of each user equipment may be different, so that the probability that the K numbers output based on the K preset functions are the same is low. In particular, for some functions (such as hash functions), if the inputs are different, the output will have a large probability of difference. Therefore, it is more reliable to ensure that the probability that the number of Ks outputted by different user equipments is the same is low, thereby avoiding the occurrence of false alarms.
  • the input information of the K preset functions of the i-th user equipment includes at least one of the following: the random access request Identification information and system time information in the middle.
  • the system time information includes any one or more of the following: a system superframe number, a system frame number, and a system subframe number.
  • the identifier information in the random access request is a random number included in the random access request or an index value corresponding to the access sequence corresponding to the random access request.
  • the identifier information in the random access request is a random number included in the random access request or the random access request according to the agreement between the base station and the user equipment.
  • the index value corresponding to the access sequence is a random access response for answering the uplink random access request.
  • the identification information in the random access request of each first type of user equipment may be different, so the probability that the K numbers output based on the K preset functions are the same is low.
  • some functions such as hash functions
  • the output will have a large probability of difference. Therefore, it is more reliable to ensure that the probability that the number of Ks outputted by different user equipments is the same is low, thereby avoiding the occurrence of false alarms.
  • the K preset functions of the ith user equipment includes at least one of the following: an identifier of the user equipment corresponding to the signaling and system time information.
  • the system time information includes any one or more of the following: a system superframe number, a system frame number, and a system subframe number.
  • the identifiers of each type of user equipment are different, so the probability that the number of Ks output based on the K preset functions are the same is low. In particular, for some functions (such as hash functions), if the inputs are different, the output will have a large probability of difference. Therefore, it is more reliable to ensure that the probability that the number of Ks outputted by different user equipments is the same is low, thereby avoiding the occurrence of false alarms.
  • the input information of the K preset functions corresponds to a state in which the user equipment is located. That is to say, the determining unit 902 can determine the input information of the K preset functions according to the state of the user equipment.
  • the input information of the K preset functions includes at least one of: an international mobile subscriber identity of the user equipment, and a temporary logical link identifier of the user equipment;
  • the input information of the K preset functions is the connection state identifier of the user equipment.
  • the determining unit 902 may determine input information of the K preset functions according to a preset.
  • the receiving unit 901 is further configured to receive a value of K sent by the base station and a value of M.
  • FIG. 10 is a structural block diagram of a base station according to an embodiment of the present invention. As shown in FIG. 10, the base station 1000 includes a processor 1001, a memory 1002, and a transceiver circuit 1003.
  • bus system 1004 which in addition to the data bus includes a power bus, a control bus, and a status signal bus.
  • bus system 1004 various buses are labeled as bus system 1004 in FIG.
  • the method disclosed in the foregoing embodiment of the present invention may be applied to the processor 1001 or processed by the processor 1001.
  • the device 1001 is implemented.
  • the processor 1001 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 1001 or an instruction in a form of software.
  • the processor 1001 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or the like. Programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA Field Programmable Gate Array
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a random access memory (RAM), a flash memory, a read-only memory (ROM), a programmable read only memory or an electrically erasable programmable memory, a register, etc.
  • RAM random access memory
  • ROM read-only memory
  • programmable read only memory or an electrically erasable programmable memory
  • register etc.
  • the storage medium is located in the memory 1002, and the processor 1001 reads the instructions in the memory 1002 and completes the steps of the above method in combination with its hardware.
  • the processor 1001 is configured to determine to send downlink information to P user equipments in the at least one user equipment in the first time period.
  • the processor 1001 is further configured to generate, according to the determined P user equipments, an indication field, where the indication field includes M bits, each of the at least one user equipment respectively corresponding to K of the M bits a bit, the K bits are used to indicate whether the corresponding user equipment needs to receive and read the downlink information sent by the base station in the first time period, where M is a positive integer greater than 1, and K is greater than 1 and less than M.
  • M is a positive integer greater than 1
  • K is greater than 1 and less than M.
  • a positive integer, P is an integer greater than or equal to zero.
  • the transceiver circuit 1003 is configured to send the indication field to the at least one user equipment.
  • the base station 1000 shown in FIG. 10 may indicate, by using an indication field, downlink information that each user equipment in the user equipment transmits to the base station in the first time period.
  • the user equipment receives the indication field from the base station, if the user equipment determines that the downlink information does not need to be received and read in the first time period, the user equipment may not listen to and receive the corresponding channel. In this way, the power consumption of the user equipment can be reduced to achieve the purpose of power saving.
  • the at least one user equipment may include the first type of user equipment and/or the second type of user equipment.
  • the P user devices in the at least one user equipment may be referred to as the first type user equipment.
  • the first type of user equipment, in the at least one user equipment, the base station determines the first time period A type of user equipment that sends downstream information to it. For example, if the downlink information to be sent is a paging message in the first time period, the base station may determine, according to the signaling of the core network, the user equipment that needs to be paged in the first time period, thereby determining the user equipments. For the first type of user equipment.
  • the base station determines, according to the scheduling algorithm, the user equipment scheduled in the first time period, As a first type of user equipment; for example, assuming that the first time period is a period of time after the uplink random access resource, and the downlink information to be sent is a random access used to respond to the random access request message sent by the user equipment.
  • the base station selects a user equipment corresponding to the random access request message according to the available condition of the uplink resource, and feeds the random access response message to the user equipment in the first time period, and the base station determines the user equipment.
  • the second type of user equipment is a user equipment to which the base station does not send downlink information during the first time period.
  • the base station 800 is a serving base station of the connected user equipment.
  • the base station 800 is the base station where the camped cell of the user equipment in the idle state is located.
  • the processor 1001 may set the value of the K bits corresponding to each user equipment of the P user equipments to be positive according to the P user equipments.
  • the K bit positions corresponding to each user equipment of the at least one user equipment are pre-configured by the processor 1001, and the sending unit 801 may send the configuration result to the corresponding user equipment.
  • the K preset functions are K preset random functions, and the K numbers are K random numbers.
  • the preset function is a random function
  • the generated number is a random number, which can cause different user equipments to generate corresponding numbers with randomness, thereby reducing the probability of false alarms.
  • the K preset functions are K preset hash functions.
  • the K preset functions are K hash functions or the hash function modulates M values.
  • the K preset functions are functions that equally map the input of each of the preset functions to M output values.
  • the type of the downlink information is any one of the following: paging signaling, a random access response for answering an uplink random access request, signaling for scheduling downlink user equipment to receive downlink data, and Signaling indicating that the user equipment sends uplink data.
  • the input information of the K preset functions of the i-th user equipment may correspond to the type of the downlink information. That is, the processor 1001 may determine input information of the K preset functions of the i-th user equipment according to the type of the downlink information.
  • the input information of the K preset functions of the i-th user equipment includes at least one of the following: an identifier of the first type of user equipment corresponding to the paging signaling And system time information.
  • the system time information includes any one or more of the following: a system superframe number, a system frame number, and a system subframe number.
  • the input information of the K preset functions of the i-th user equipment includes at least one of the following: the random access request Identification information and system time information in the middle.
  • the system time information includes any one or more of the following: a system superframe number, a system frame number, and a system subframe number.
  • the identifier information in the random access request is a random number included in the random access request or an index value corresponding to the access sequence corresponding to the random access request.
  • the K preset functions of the ith user equipment includes at least one of the following: an identifier of the first type of user equipment and system time information corresponding to the signaling.
  • the system time information includes any one or more of the following: a system superframe number, a system frame number, and a system subframe number.
  • input information of the K preset functions of the i-th user equipment may correspond to a state in which the i-th user equipment is located. That is, the processor 1001 may determine input information of the K preset functions of the i-th user equipment according to the state of the i-th user equipment.
  • the i-th user The input information of the K preset functions of the device includes at least one of the following: an International Mobile Subscriber Identification Number (IMSI) of each of the first type of user equipments, and a temporary of each of the first type of user equipments. a logical link identifier (Temporary Logical Link Identifier); where the i-th user equipment is in an air interface connection state, the input information of the K preset functions of the i-th user equipment includes each of the first type of user equipments The connection state identifier.
  • the connection state identifier may be a Cell Radio Network Temporary Identifier (C-RNTI).
  • the processor 1001 may further determine, according to a preset, input information of K preset functions of the i-th user equipment.
  • the processor 1001 determines, according to a preset rule, the input information of the K preset functions of the i-th user equipment, including: pre-specifying the identification information of the user equipment according to a preset (for example, IMSI or TLLI) as at least one input information as a preset function; according to a preset, further, for some or all K preset functions, time information may also be used as input function of a preset function; according to a preset, further to the part Or all K preset functions, the index number of the type of the downlink information may also be used as the input information of the preset function.
  • a preset for example, IMSI or TLLI
  • the processor 1001 is further configured to determine the value of K and the value of M.
  • the transceiver circuit 1003 is further configured to send the value of the K and the value of the M to the user equipment.
  • the transceiver circuit 1003 is specifically configured to send the indication field to the user equipment on the broadcast channel PBCH and/or the physical downlink control channel PDCCH.
  • FIG. 11 is a structural block diagram of a user equipment according to an embodiment of the present invention.
  • the user equipment 1100 includes a processor 1101, a memory 1102, and a transceiver circuit 1103.
  • bus system 1104 which in addition to the data bus includes a power bus, a control bus, and a status signal bus.
  • bus system 1104 various buses are labeled as bus system 1104 in FIG.
  • the method disclosed in the foregoing embodiments of the present invention may be applied to the processor 1101 or implemented by the processor 1101.
  • the processor 1101 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 1101 or an instruction in a form of software.
  • the processor 1101 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or the like. Programmable logic device, discrete gate or transistor logic device, Discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a random access memory (RAM), a flash memory, a read-only memory (ROM), a programmable read only memory or an electrically erasable programmable memory, a register, etc.
  • RAM random access memory
  • ROM read-only memory
  • programmable read only memory or an electrically erasable programmable memory
  • register etc.
  • the storage medium is located in the memory 1102, and the processor 1101 reads the instructions in the memory 1102 and completes the steps of the above method in combination with its hardware.
  • the transceiver circuit 1103 is configured to receive an indication field of a length of M bits sent by the base station.
  • the processor 1101 is configured to determine a position of the M bits corresponding to the user equipment, where M is a positive integer greater than 1, and K is a positive integer greater than 1.
  • the processor 1101 is further configured to determine, according to the value of the K bits, whether to receive and read the downlink information sent by the base station in the first time period.
  • the user equipment 1100 shown in FIG. 11 may determine, according to the indication field, whether it needs to receive and read the downlink information sent by the base station in the first time period. If the user equipment determines that the downlink information sent by the base station needs to be received and read, the corresponding channel is monitored in the first time period. If the user equipment determines that the downlink information sent by the base station is not required to be received and read, the corresponding channel may not be monitored during the first time period. At the same time, since a plurality of bit positions are used to indicate whether a user equipment needs to receive and read the scheduling control information and the corresponding data channel in the first time period, unnecessary false alarms can be reduced.
  • the processor 1101 specifically determines input information of the K preset functions; and generates K numbers corresponding to the user equipment according to the input information of the K preset functions and the K preset functions, where the K The number is used to indicate the position of the K bits corresponding to the user equipment in the M bits; and the K bit positions corresponding to the K number among the M bits are determined.
  • the K preset functions are K preset random functions, and the K numbers are K random numbers.
  • the K preset functions are K preset hash functions.
  • the K preset functions are K hash functions or the hash function modulates M values.
  • the K preset functions are for each of the preset functions.
  • the processor 1101 is specifically configured to determine whether the value of the K bits is affirmative, and if it is determined that the value of the K bits is positive, determining to receive and read the sent by the base station in the first time period. And determining, by the downlink information, that at least one of the values of the K bits is negative, determining that the downlink information sent by the base station is not received and read in the first time period.
  • the downlink information sent by the base station in the first time period is any one of the following: paging signaling, a random access response for answering the uplink random access request, and scheduling the downlink user equipment to receive downlink data.
  • Signaling signaling for indicating that the user equipment sends uplink data.
  • the input information of the K preset functions corresponds to the type of the downlink information. That is, the processor 1101 can determine input information of the K preset functions according to the type of the downlink information.
  • the input information of the K preset functions of the i-th user equipment includes at least one of the following: an identifier of the user equipment corresponding to the paging signaling, and a system time. information.
  • the system time information includes any one or more of the following: a system superframe number, a system frame number, and a system subframe number.
  • the identifier of each user equipment may be different, so that the probability that the K numbers output based on the K preset functions are the same is low. In particular, for some functions (such as hash functions), if the inputs are different, the output will have a large probability of difference. Therefore, it is more reliable to ensure that the probability that the number of Ks outputted by different user equipments is the same is low, thereby avoiding the occurrence of false alarms.
  • the input information of the K preset functions of the i-th user equipment includes at least one of the following: the random access request Identification information and system time information in the middle.
  • the system time information includes any one or more of the following: a system superframe number, a system frame number, and a system subframe number.
  • the identifier information in the random access request is a random number included in the random access request or an index value corresponding to the access sequence corresponding to the random access request.
  • the identifier information in the random access request is a random number included in the random access request or an index value corresponding to the access sequence corresponding to the random access request, according to the agreement between the base station and the user equipment.
  • the identification information in the random access request of each first type of user equipment may be different, so the probability that the K numbers output based on the K preset functions are the same is low.
  • some functions such as hash functions
  • the output will have a large probability of difference. Therefore, it is more reliable to ensure that the probability that the number of Ks outputted by different user equipments is the same is low, thereby avoiding the occurrence of false alarms.
  • the K preset functions of the ith user equipment includes at least one of the following: an identifier of the user equipment corresponding to the signaling and system time information.
  • the system time information includes any one or more of the following: a system superframe number, a system frame number, and a system subframe number.
  • the identifiers of each type of user equipment are different, so the probability that the number of Ks output based on the K preset functions are the same is low. In particular, for some functions (such as hash functions), if the inputs are different, the output will have a large probability of difference. Therefore, it is more reliable to ensure that the probability that the number of Ks outputted by different user equipments is the same is low, thereby avoiding the occurrence of false alarms.
  • the input information of the K preset functions corresponds to a state in which the user equipment is located. That is, the processor 1101 can determine input information of the K preset functions according to the state of the user equipment.
  • the input information of the K preset functions includes at least one of: an international mobile subscriber identity of the user equipment, and a temporary logical link identifier of the user equipment;
  • the input information of the K preset functions is the connection state identifier of the user equipment.
  • the processor 1101 may determine input information of the K preset functions according to a preset.
  • the transceiver circuit 1103 is further configured to receive a value of K sent by the base station and a value of M.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division, and may be implemented in actual implementation.
  • multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

Abstract

本发明实施例提供传输信息的方法和相关设备。该方法包括：基站确定在第一时间段内向至少一个用户设备中的P个用户设备发送下行信息；该基站根据确定的该P个用户设备，生成指示字段，该指示字段包括M个比特，该至少一个用户设备中的每个用户设备分别对应于该M个比特中的K个比特，该K个比特用于指示对应的用户设备是否需要在该第一时间段内接收并读取该基站发送的该下行信息，M为大于1的正整数，K为大于1且小于M的正整数，P为大于或等于0的整数；该基站向该至少一个用户设备发送该指示字段。上述技术方案，可以降低用户设备的功耗，达到节电的目的。

Description

一种传输信息的方法和设备 技术领域
本发明实施例涉及通信技术领域，并且更具体地，涉及传输信息的方法和设备。
背景技术
机器类通信(Machine Type Communication，简称：MTC)将是未来通信领域的一项重要应用。MTC可以应用于智能抄表、医疗检测、物流检测、火情监测、可穿戴设备通信等方面。MTC中的用户设备通常具有较低的功耗，这是为了增加用户设备的待机时间，减少更换电池的人力成本。
为了降低用户设备的功耗，用户设备在不需要发送上行数据或者当前没有下行业务时，会进入空闲(IDLE)态。在IDLE态下，用户设备可以长时间进入睡眠模式，即关闭接收机以达到省电的效果。
但是，为了在省电效果和延时之间取得一定的平衡，用户设备需要周期性醒来监听可能会收到的下行数据。例如，所有处于IDLE态下的用户设备都会在自己对应的寻呼时刻上尝试接收寻呼请求消息。但是实际上可能大多数的用户设备都不会收到寻呼请求消息。在此情况下，这些用户设备依然需要读取所有的物理下行控制信道(Physical Downlink Control Channel，简称：PDCCH)后才可以确定自身没有在寻呼时刻被调度，这对于降低用户设备的功耗是不利的。再如，随机接入(Random Access)过程中，基站在收到了用户设备发送的随机接入请求且同意该用户设备接入的情况下，会在N个帧内向用户设备反馈随机接入响应报文。在此情况下，在发送了随机接入请求后，用户设备会连续监听N个帧，接收和译码所有可能承载随机接入响应报文的PDCCH信令或物理下行共享信道(Physical Downlink Shared Channel，简称：PDSCH)数据包，检测对应的随机接入响应报文是否是该基站反馈给自身的。但是，由于上下行资源是有限的，因此基站并不确定是在N个帧中的哪个帧向用户设备发送随机接入响应报文。因此，用户设备需要监听多个帧来检测该基站是否反馈随机接入响应报文，这对于降低用户设备的功耗是不利的。又如，在普通的上行调度和下行调度方案中，连接态的用户设备会持续监听若干个PDCCH调度时刻来确定该用户设备是否被调度 了。换句话说，每个调度时刻都有可能调度该用户设备，但是该用户设备仅会在某个调度时刻被调度，而此时用户设备依然需要监听所有可能的调度时刻，因此，也会浪费用户设备的功耗。
发明内容
本发明实施例提供传输信息的方法和设备，可以降低用户设备的功耗，达到节电的目的。
第一方面，本发明实施例提供一种传输信息的方法，该方法包括：基站确定在第一时间段内向至少一个用户设备中的P个用户设备发送下行信息；该基站根据确定的该P个用户设备，生成指示字段，该指示字段包括M个比特，该至少一个用户设备中的每个用户设备分别对应于该M个比特中的K个比特，该K个比特用于指示对应的用户设备是否需要在该第一时间段内接收并读取该基站发送的该下行信息，M为大于1的正整数，K为大于1且小于M的正整数，P为大于或等于0的整数；该基站向该至少一个用户设备发送该指示字段。
结合第一方面，在第一方面的第一种可能的实现方式中，在P为大于0的整数的情况下，该基站根据确定的该P个用户设备，生成指示字段，包括：该基站确定该P个用户设备中的第i个用户设备的K个预设函数的输入信息，其中，i＝1,…,P；根据该第i个用户设备的K个预设函数的输入信息以及该第i个用户设备的K个预设函数，生成与该第i个用户设备对应的K个数，该K个数用于指示该第i个用户设备对应的K个比特在该M个比特中的位置；将该M个比特中与该K个数相对应的比特位置均设置为肯定。
结合第一方面的第一种可能的实现方式，在第一方面的第二种可能的实现方式中，该K个预设函数为K个预设随机函数；该K个数为K个随机数；或者，该K个预设函数为K个预设散列函数。
结合第一方面的第一种可能的实现方式或第一方面的第二种可能的实现方式，在第一方面的第三种可能的实现方式中，该下行信息的类型为以下中的任一个：寻呼信令、用于应答上行随机接入请求的随机接入响应、用于调度下行用户设备接收下行数据的信令、用于指示用户设备发送上行数据的信令。
结合第一方面的第三种可选的，在第一方面的第四种可能的实现方式 中，在该下行信息为该寻呼信令的情况下，该第i个用户设备的K个预设函数的输入信息包括以下至少一个：该寻呼信令对应的用户设备的标识和系统时间信息。
结合第一方面的第三种可能的实现方式，在第一方面的第五种可能的实现方式中，在该下行信息为该用于应答上行随机接入请求的随机接入响应的情况下，该第i个用户设备的K个预设函数的输入信息包括以下至少一个：该随机接入请求中的标识信息和系统时间信息。
结合第一方面的第三种可能的实现方式，在第一方面的第六种可能的实现方式中，在该下行信息为该用于调度该第i个用户设备接收下行数据的信令或该用于指示该第i个用户设备发送上行数据的信令的情况下，该第i个用户设备的K个预设函数的输入信息包括以下至少一个：该信令对应的用户设备的标识和系统时间信息。
结合第一方面的第一种可能的实现方式或第一方面的第二种可能的实现方式，在第一方面的第七种可能的实现方式中，在该第i个用户设备处于空口空闲态的情况下，该第i个用户设备的K个预设函数的输入信息包括以下至少一种：该第i个用户设备的国际移动用户识别码、该第i个用户设备的临时逻辑链路标识；在该第i个用户设备处于空口连接态的情况下，该第i个用户设备的K个预设函数的输入信息至少包括该第i个用户设备的连接态标识。
结合第一方面的第一种可能的实现方式至第一方面的第七种可能的实现方式中的任一种可能的实现方式，在第一方面的第八种可能的实现方式中，在该基站根据该第i个用户设备的K个预设函数的输入信息以及该第i个用户设备的K个预设函数，生成与该第i个用户设备对应的K个数之前，该方法还包括：该基站确定K的取值以及M的取值，并将K和M的取值发送给该至少一个用户设备。
结合第一方面或第一方面的上述任一种可能的实现方式，在第一方面的第九种可能的实现方式中，该基站在广播信道PBCH和/或物理下行控制信道PDCCH向该用户设备发送该指示字段。
第二方面，本发明实施例提供一种传输信息方法，该方法包括：用户设备接收基站发送的长度为M个比特的指示字段；该用户设备确定该M个比特中对应于该用户设备的K个比特的位置，M为大于1的正整数，K为大 于1且小于M的正整数的正整数；该用户设备根据该K个比特的值，确定在第一时间段是否接收并读取该基站发送的下行信息。
结合第二方面，在第二方面的第一种可能的实现方式中，该用户设备确定该M个比特中对应于该用户设备的K个比特位置，包括：该用户设备确定K个预设函数的输入信息；根据该K个预设函数的输入信息以及该K个预设函数，生成与该用户设备对应的K个数，该K个数用于指示该用户设备对应的K个比特在该M个比特中的位置；确定在该M个比特中与该K个数对应的K个比特位置。
结合第二方面的第一种可能的实现方式，在第二方面的第二种可能的实现方式中，该K个预设函数为K个预设随机函数，该K个数为K个随机数；或者，该K个预设函数K个预设散列函数。
结合第二方面或第二方面的上述任一种可能的实现方式，在第二方面的第三种可能的实现方式中，该用户设备根据该K个比特的值，确定在第一时间段是否接收并读取该基站发送的下行信息，包括：若该用户设备确定该K个比特的值均为肯定，则确定在该第一时间段内接收并读取该基站发送的该下行信息；若该用户设备确定该K个比特的值中存在至少一位为否定，则确定在该第一时间段内不接收并读取该基站发送的该下行信息。
结合第二方面的第一种可能的实现方式至第二方面的第三种可能的实现方式中的任一种可能的实现方式，在第二方面的第四种可能的实现方式中，该下行信息的类型为以下任一种：寻呼信令、用于应答上行随机接入请求的随机接入响应、用于调度下行用户设备接收下行数据的信令、用于指示用户设备发送上行数据的信令。
结合第二方面的第四种可能的实现方式，在第二方面的额第五种可能的实现方式中，在该下行信息为该寻呼信令的情况下，该K个预设函数的输入信息包括以下至少一个：该用户设备的标识和系统时间信息。
结合第二方面的第四种可能的实现方式，在第二方面的第六种可能的实现方式中，在该下行信息为该用于应答上行随机接入请求的随机接入响应的情况下，该K个预设函数的输入信息包括以下至少一个：随机接入请求中的标识信息和系统时间信息。
结合第二方面的第四种可能的实现方式，在第二方面的第七种可能的实现方式中，在该下行信息为用于调度下行用户设备接收下行数据的信令或该 用于指示用户设备发送上行数据的信令的情况下，该K个预设函数的输入信息包括以下至少一个：该用户设备的标识和系统时间信息。
结合第二方面的第一种可能的实现方式至第二方面的第三种可能的实现方式中的任一种可能的实现方式，在第二方面的第八种可能的实现方式中，在该用户设备处于空口空闲态的情况下，该K个预设函数的输入信息包括以下至少一个：该用户设备的国际移动用户识别码、该用户设备的临时逻辑链路标识；在该用户设备处于空口连接态的情况下，该K个预设函数的输入为该用户设备的连接态标识。
结合第二方面或第二方面的上述任一种可能的实现方式，在第二方面的第九种可能的实现方式中，在该根据所述K个预设函数的输入信息以及所述K个预设函数，生成与所述用户设备对应的K个数之前，该方法还包括：该用户设备接收该基站发送的K的取值和M的取值。
第三方面，本发明实施例提供一种基站，该基站包括：确定单元，用于确定在第一时间段内向至少一个用户设备中的P个用户设备发送下行信息；该确定单元，还用于根据确定的该P个用户设备，生成指示字段，该指示字段包括M个比特，该至少一个用户设备中的每个用户设备分别对应于该M个比特中的K个比特，该K个比特用于指示对应的用户设备是否需要在该第一时间段内接收并读取该基站发送的该下行信息，M为大于1的正整数，K为大于1且小于M的正整数，P为大于或等于0的整数；发送单元，用于向该至少一个用户设备发送该指示字段。
结合第三方面，在第三方面的第一种可能的实现方式中，该确定单元，具体用于确定该P个用户设备中的第i个用户设备的K个预设函数的输入信息，其中，i＝1,…,P；根据该第i个用户设备的K个预设函数的输入信息以及该第i个用户设备的K个预设函数，生成与该第i个用户设备对应的K个数，该K个数用于指示该第i个用户设备对应的K个比特在该M个比特中的位置；将该M个比特中与该K个数相对应的比特位置均设置为肯定。
结合第三方面的第一种可能的实现方式，在第三方面的第二种可能的实现方式中，该K个预设函数为K个预设随机函数；该K个数为K个随机数；或者，该K个预设函数为K个预设散列函数。
结合第三方面的第一种可能的实现方式或第三方面的第二种可能的实现方式，在第三方面的第三种可能的实现方式中，该下行信息的类型为以下 中的任一个：寻呼信令、用于应答上行随机接入请求的随机接入响应、用于调度下行用户设备接收下行数据的信令、用于指示用户设备发送上行数据的信令。
结合第三方面的第三种可能的实现方式，在第三方面的第四种可能的实现方式中，在该下行信息为该寻呼信令的情况下，该第i个用户设备的K个预设函数的输入信息包括以下至少一个：该寻呼信令对应的用户设备的标识和系统时间信息。
结合第三方面的第三种可能的实现方式，在第三方面的第五种可能的实现方式中，在该下行信息为该用于应答上行随机接入请求的随机接入响应的情况下，该第i个用户设备的K个预设函数的输入信息包括以下至少一个：该随机接入请求中的标识信息和系统时间信息。
结合第三方面的第三种可能的实现方式，在第三方面的第六种可能的实现方式中，在该下行信息为该用于调度该用户设备接收下行数据的信令或该用于指示该用户设备发送上行数据的信令的情况下，该第i个用户设备的K个预设函数的输入信息包括以下至少一个：该信令对应的用户设备的标识和系统时间信息。
结合第三方面的第一种可能的实现方式或第三方面的第二种可能的实现方式，在第三方面的第七种可能的实现方式中，在该第i个用户设备处于空口空闲态的情况下，该第i个用户设备的K个预设函数的输入信息包括以下至少一种：该第i个用户设备的国际移动用户识别码、该第i个用户设备的临时逻辑链路标识；在该第i个用户设备处于空口连接态的情况下，该第i个用户设备的K个预设函数的输入信息至少包括该第i个用户设备的连接态标识。
结合第三方面或第三方面的上述任一种可能的实现方式，在第三方面的第八种可能的实现方式中，该确定单元还用于确定K的取值和M的取值；该发送单元，还用于将该K的取值和该M的取值发送给该至少一个用户设备。
结合第三方面或第三方面的上述任一种可能的实现方式，在第三方面的第九种可能的实现方式中，该发送单元，具体用于在广播信道PBCH和/或物理下行控制信道PDCCH向该用户设备发送该指示字段。
第四方面，本发明实施例提供一种用户设备，该用户设备包括：接收单 元，用于接收基站发送的长度为M个比特的指示字段；确定单元，用于确定该M个比特中对应于该用户设备的K个比特位置，M为大于1的正整数，K为大于1且小于M的正整数的正整数；该确定单元，还用于根据该K个比特的值，确定在第一时间段是否接收并读取该基站发送的下行信息。
结合第四方面，在第四方面的第一种可能的实现方式中，该确定单元，具体用于确定K个预设函数的输入信息；根据该K个预设函数的输入信息以及该K个预设函数，生成与该用户设备对应的K个数，该K个数用于指示该用户设备对应的K个比特在该M个比特中的位置；确定在该M个比特中与该K个数对应的K个比特位置。
结合第四方面的第一种可能的实现方式，在第四方面的第二种可能的实现方式中，该K个预设函数为K个预设随机函数，该K个数为K个随机数；或者，该K个预设函数K个预设散列函数。
结合第四方面或第四方面的上述任一种可能的实现方式，在第四方面的第三种可能的实现方式中，该确定单元，具体用于确定该K个比特的值是否均为肯定，若确定该K个比特的值均为肯定，则确定该第一时间段内接收并读取该基站发送的该下行信息，若确定该K个比特的值中存在至少一位为否定，则确定在该第一时间段内不接收并读取该基站发送的该下行信息。
结合第四方面的第一种可能的实现方式至第四方面的第三种可能的实现方式中的任一种可能的实现方式，在第四方面的第四种可能的实现方式中，该下行信息的类型为以下任一种：寻呼信令、用于应答上行随机接入请求的随机接入响应、用于调度下行用户设备接收下行数据的信令、用于指示用户设备发送上行数据的信令。
结合第四方面的第四种可能的实现方式，在第四方面的第五种可能的实现方式中，在该下行信息为该寻呼信令的情况下，该K个预设函数的输入信息包括以下至少一个：该用户设备的标识和系统时间信息。
结合第四方面的第四种可能的实现方式，在第四方面的第六种可能的实现方式中，在该下行信息为该用于应答上行随机接入请求的随机接入响应的情况下，该K个预设函数的输入信息包括以下至少一个：随机接入请求中的标识信息和系统时间信息。
结合第四方面的第四种可能的实现方式，在第四方面的第七种可能的实现方式中，在该下行信息为用于调度下行用户设备接收下行数据的信令或该 用于指示用户设备发送上行数据的信令的情况下，该K个预设函数的输入信息包括以下至少一个：该用户设备的标识和系统时间信息。
结合第四方面的第一种可能的实现方式至第四方面的第三种可能的实现方式中的任一种可能的实现方式，在第四方面的第八种可能的实现方式中，在该用户设备处于空口空闲态的情况下，该K个预设函数的输入信息包括以下至少一个：该用户设备的国际移动用户识别码、该用户设备的临时逻辑链路标识；在该用户设备处于空口连接态的情况下，该K个预设函数的输入为该用户设备的连接态标识。
结合第四方面的上述任一种可能的实现方式，在第四方面的第九种可能的实现方式中，该接收单元，还用于接收该基站发送的K的取值和M的取值。
上述技术方案中，基站可以通过指示字段指示用户设备中的每个用户设备该基站是否会在第一时间段内向其发送的下行信息。在用户设备响应从该基站接收到该指示字段时，如果用户设备确定不需要在第一时间段内接收并读取该下行信息，则该用户设备可以不监听和接收相应的信道。这样，可以降低用户设备的功耗，达到节电的目的。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对本发明实施例中所需要使用的附图作简单地介绍，显而易见地，下面所描述的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是根据本发明实施例提供的传输信息的方法的示意性流程图；
图2是定时关系的示意图；
图3是根据本发明实施例提供的传输信息的方法的示意性流程图；
图4是本发明实施例提供的一种传输信息的方法的示意图；
图5是本发明实施例提供的另一传输信息的方法的示意图；
图6是本发明实施例提供的另一传输信息的方法的示意图；
图7是本发明实施例提供的另一传输信息的方法的示意图；
图8是根据本发明实施例提供的基站的结构框图；
图9是根据本发明实施例提供的用户设备的结构框图；
图10是根据本发明实施例提供的基站的结构框图；
图11是根据本发明实施例提供的用户设备的结构框图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所述的实施例是本发明的一部分实施例，而不是全部实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都应属于本发明保护的范围。
图1是根据本发明实施例提供的传输信息的方法的示意性流程图。图1所示的方法由基站执行。
101，基站确定在第一时间段内项至少一个用户设备中的P个用户设备发送下行信息。
102，基站根据确定的该P个用户设备，生成指示字段，该指示字段包括M个比特(bit)，该至少一个用户设备中的每个用户设备分别对应于该M个比特中的K个比特，该K个比特用于指示对应的用户设备是否需要在该第一时间段内接收并读取该基站发送的该下行信息，M为大于1的正整数，K为大于1且小于M的正整数，P为大于或等于0的整数。
103，该基站向该至少一个用户设备发送该指示字段。
根据图1所示的方法，基站可以通过指示字段指示用户设备中的每个用户设备该基站是否会在第一时间段内向其发送的下行信息。在用户设备响应从该基站接收到该指示字段时，如果用户设备确定不需要在第一时间段内接收并读取该下行信息，则该用户设备可以不监听和接收相应的信道。这样，可以降低用户设备的功耗，达到节电的目的。
具体地，该至少一个用户设备中可以包括第一类用户设备和/或第二类用户设备。该至少一个用户设备中的P个用户设备可以称为该第一类用户设备。该第一类用户设备，为该至少一个用户设备中，基站确定在第一时间段内向其发送下行信息的一类用户设备。例如，假设在第一时间段内，需要发送的下行信息是寻呼消息，那么根据核心网的信令，基站可以确定在第一时间段内需要被寻呼的用户设备，从而确定这些用户设备为第一类用户设备。又如，假设需要发送的下行信息是普通上行数据或下行数据的调度信息，而该第一时间段是一个调度周期，则基站根据调度算法确定出在第一时间段内 被调度的用户设备，作为第一类用户设备；再如，假设第一时间段为上行随机接入资源之后的一段时间，而需要发送的下行信息为用来响应用户设备发送的随机接入请求报文的随机接入应答报文，则基站根据上行资源的可用情况，选择若干随机接入请求报文对应的用户设备接入并在第一时间段内向这些用户设备反馈随机接入响应报文，基站确定这些用户设备为第一类用户设备。第二类用户设备，为在第一时间段内基站没有向其发送下行信息的用户设备。
具体地，对于连接态的用户设备，执行图1所示的方法的基站是该连接态的用户设备的服务基站。对于空闲态的用户设备，执行图1所示的方法的基站是该空闲态的用户设备的驻留小区所在的基站。
该指示字段在初始状态下，M个比特的值均为否定。基站可以根据该P个用户设备，将该P个用户设备中的每个用户设备对应的K个比特位置均设置为肯定。
可选的，作为一个实施例，该至少一个用户设备中的每个用户设备对应的K个比特位置是该基站预先配置的，并将配置结果发送给对应的用户设备。
可选的，作为一个实施例，在P为大于0的整数的情况下，该基站根据确定的P个用户设备，生成指示字段包括：该基站确定该P个用户设备中的第i个用户设备的K个预设函数的输入信息，其中，i＝1,…,P；该基站根据该第i个用户设备的K个预设函数的输入信息以及该第i个用户设备的K个预设函数，生成与该第i个用户设备对应的K个数，该K个数用于指示该的i个用户设备对应的K个比特在该M个比特中的位置；将该M个比特中与该K个数相对应的比特位置均设置为肯定，以指示该第i个用户设备需要在第一时间段接收基站发送的下行信息。M个比特的初始值均为否定，通过上述方案，将该P个用户设备(即第一类用户设备)对应的K个比特的值均设置为肯定，而对其余用户设备(即第二类用户设备)对应的K个比特位置不做操作。这样，可以通过K个比特的值均为肯定来指示该基站在该第一时间段内向其发送下行信息，通过K个比特的值中存在至少一位为否定来指示基站在该第一时间段内不向其发送下行信息。
可以理解，在P为0的情况下，该基站在第一时间段内不会向任何用户设备发送下行信息，因此，该基站确定该M个比特均为否定。
本领域技术人员可以理解，基站和用户设备可以预先规定均使用“1”表示肯定，使用“0”表示否定。当然，基站和用户设备也可以预先规定均使用“0”表示肯定，“1”表示否定。或这，基站和用户设备还可以预先规定使用特定的一组编码表示肯定，另一组编码表示否定。本发明并不限定。
可选的，作为一个实施例，该K个预设函数为K个预设随机函数，该K个数为K个随机数。这样，由于预设函数为随机函数，因此产生的数是随机数，可以使得不同的用户设备产生对应的数具有随机性，从而可以降低虚警的概率。
可选的，作为另一个实施例，该K个预设函数为K个预设散列函数。
可选的，作为另一个实施例，该K个预设函数为K个哈希函数(Hash Function)或者哈希函数对M取模值。
可选的，作为另一个实施例，该K个预设函数为将每个该预设函数的输入等概率地映射到M个输出值的函数。
可选的，该下行信息的类型为以下中的任一个：寻呼信令、用于应答上行随机接入请求的随机接入响应、用于调度下行用户设备接收下行数据的信令、用于指示用户设备发送上行数据的信令。
可选的，作为一个实施例，该第i个用户设备的K个预设函数的输入信息可以与该下行信息的类型相对应。也就是说，该基站可以根据该下行信息的类型，确定该第i个用户设备的K个预设函数的输入信息。
具体地，在该下行信息为该寻呼信令情况下，该第i个用户设备的K个预设函数的输入信息包括以下至少一个：该寻呼信令对应的用户设备的标识和系统时间信息。该系统时间信息包括以下中的任一个或多个：系统超帧号、系统帧号和系统子帧号。
具体地，在该下行信息为用于应答上行随机接入请求的随机接入响应的情况下，该第i个用户设备的K个预设函数的输入信息包括以下至少一个：该随机接入请求中的标识信息和系统时间信息。该系统时间信息包括以下中的任一个或多个：系统超帧号、系统帧号和系统子帧号。可选的，该随机接入请求中的标识信息为随机接入请求中包含的随机数或者该随机接入请求对应的接入序列对应的索引值。
具体地，在该下行信息为该用于调度下行用户设备接收下行数据的信令或者该用于指示用户设备发送上行数据的信令的情况下，该第i个用户设备 的K个预设函数的输入信息包括以下至少一个：该信令对应的用户设备的标识和系统时间信息。该系统时间信息包括以下中的任一个或多个：系统超帧号、系统帧号和系统子帧号。
可选的，作为另一个实施例，该第i个用户设备的K个预设函数的输入信息可以与该第i个用户设备所处的状态相对应。也就是说，该基站可以根据该第i个用户设备所处的状态，确定该第i个用户设备的K个预设函数的输入信息。
具体地，在该第i个用户设备处于空口空闲态的情况下，该第i个用户设备的K个预设函数的输入信息包括以下至少一种：每个该第一类用户设备的国际移动用户识别码(International Mobile Subscriber Identification Number，IMSI)、每个该第一类用户设备的临时逻辑链路标识(Temporary Logical Link Identifier)；在该第i个用户设备处于空口连接态的情况下，该第i个用户设备的K个预设函数的输入信息包括每个该第一类用户设备的连接态标识。该连接态标识可以是小区无线网络临时标识(Cell Radio Network Temporary Identifier，C-RNTI)。
可选的，作为另一个实施例，该基站还可以根据预先设定，确定该第i个用户设备的K个预设函数的输入信息。
具体地，该基站根据预先设定的规则，确定第i个用户设备的该K个预设函数的输入信息，包括：按照预先设定，将预先规定的用户设备的标识信息(例如，IMSI或者TLLI)作为预设函数的至少一个输入信息；按照预先设定，进一步对于部分或全部K个预设函数，时间信息也可以作为预设函数的输入信息；按照预先设定，进一步对于部分或全部K个预设函数，下行信息的类型的索引编号也可以作为预设函数的输入信息。
作为一个例子，从K个预设函数输出的K个数映射到M位指示字段中的K个比特位置的方法如下边例子示意。可选的，不失一般性，以M＝6，K＝2为例。以寻呼信息为例，假设在第一时间段内，总共有两个用户设备，用户设备1和用户设备2，被寻呼。用户设备1和用户设备2对应的临时逻辑链路标识(Temporary Logical Link Identifier，简称：TLLI)号分别记为TLLI_1和TLLI_2。本例中基站和用户设备间预设两个函数可以定义为Hash(TLLI)和Hash(TLLI||SuperFrame number)，其中Hash()表示哈希函数，TLLI||SuperFrame number表示TLLI和第一时间段对应的超帧号(SuperFrame  number)的级联。不失一般性，假设Hash()函数的输出为一个8比特长的数(取值范围在0～255)。对于用户设备1，基站根据两个预设函数Hash(TLLI_1)和Hash(TLLI_1||SuperFrame number)，生成两个长为8比特的数，不失一般性，假设分别为67和123。按照预设规则，基站分别对M取模值，分别得到取模值后的输出为1和3，则基站将第1比特位置和第3比特位置置位为肯定(假设1表示肯定)；进一步，对于用户设备2，基站根据两个预设函数Hash(TLLI_2)和Hash(TLLI_2||SuperFrame number)，生成两个长为8比特的数，不失一般性，假设分别为254和57，则按照预设规则，基站分别对M取模值，分别得到取模值后的输出为2和3，则基站将第2比特位置和第3比特位置置位为肯定(假设1表示肯定)；因此基站根据用户设备1和用户设备2的TLLI和第一时间段对应的SuperFrame Number，可知用户设备1应置位第1和第3比特位置，而用户设备2应置位第2比特位置和第3比特位置，因此综合起来指示字段应该置位第1、第2和第3比特位置，置位后的为011100。
进一步，在该基站根据该第i个用户设备的K个预设函数的输入信息以及该第i个用户设备的K个预设函数，生成与该第i个用户设备对应的K个数之前，该方法还包括：该基站确定K和M的取值，并将K和M的取值发送给该用户设备。
可以理解的是，K和M的取值，与第一时间段内的平均负载，即第一时间段内需要被调度和发送下行信息的第一类用户设备的平均数量相关(假设为P’，这里的P’为平均第一类用户设备数)。当平均负载重时，M的取值应该增大，当平均负载较轻时，则M取值可以适当减小。当K值确定的条件下，如果负载较重，P’个用户设备很可能将M位中的绝大部分比特位置置位肯定，此时对于在第一时间段内没有被基站调度或发送下行信息的用户设备来说，其对应的K个比特位置将具有更高的概率均被置位为肯定(此时即为虚警)。因此，在负载变重时，应该适当加大指示字段的比特数(即M的值)。对于K值，其最优值实际上和平均负载数P’以及M值有关。因此，当平均负载变化时，应该允许基站或其他网络设备想所有需要读取指示字段的用户设备发送和更新K值和/或M值。
进一步，基站还可以根据需要调整K和/或M的取值。若需要调度的用户设备的数量(假设为P)比较少，则可以适当减少M的取值。若需要调度 的用户设备数量比较多，则可以适当增加增加M的取值，以降低虚警概率。对应地，对应于不同的M取值和需要调度的用户设备的数量，基站可以得到最优或较优的K的取值，例如典型地，K值可以取
Figure PCTCN2015085198-appb-000001
当然，可选地，为了降低实现复杂度，K也可以简单地固定取2或3。基站可以将确定好的M的取值发送给所有需要读取指示字段的用户设备。可选的，基站也可以将K值发送给所有需要读取指示字段的用户设备。可选的，基站可以通过广播的方式发送给这些用户设备，基站也可以直接发送给这些用户设备。
可选的，作为一个实施例，指示字段可以周期性发送或基于事件触发进行发送，用于指示用户设备在不同的第一时间段内是否接收并读取下行信息的情况下，该基站可以保持M值不变，只更新K值并将更新后的K值发送给该用户设备；或者，该基站可以保持K值不变，只更新M值并将更新后的M值发送给该用户设备；或者，同时更新K值和M值，并将更新后的K值和M值发送给该用户设备。
可选的，该K值和M值可以在基站和用户设备之间预先设定。即，可选的，可以根据该系统的长期平均的业务模型，确定出合适的K值和M值；可选的，M值的确定还可能需要考虑，承载指示字段的物理层资源的限制，选取合适的M值，从而进一步选取出对应合适的K值。可选的，该K和M值在选定后，不需要改变，基站和用户设备基于此预设定的K值和M值进行计算即可。可选的，如果K值和M值，可以半静态地改变，则可以使用高层信令在基站和用户设备之间设定相同的K值和M值。
进一步，该基站在广播信道(Physical Broadcast Channel，简称：PBCH)和/或物理下行控制信道项该用户设备发送该指示字段。具体地，该指示字段的发送可以通过广播信道进行广播，或者通过周期性地在PDCCH上通过公共下行控制单元(common Downlink Control Information，common DCI)或者公共PDCCH消息进行周期性发送。
进一步，该指示字段和该第一时间段应有明确的定时定义，该定时关系定义由基站预先配置给用户设备；或者，该定时关系为预设定时关系。图2是定时关系的示意图。如图2所示，若指示字段用于指示第一时间段内用户设备是否需要接收并读取下行信息，则该指示字段应该在该第一时间段起始位置之前某预设时间位置开始发送。设该指示字段和对应第一时间段之间的时间偏差为定时关系T1，则该定时关系T1大于用户设备获取指示字段的接 收和处理时间。
基站和用户设备应根据相同的定时关系T1和第一时间段长度ΔT的设定，获取指示字段并判定是否要在第一时间段接收和读取下行信息。因此，基站和用户设备将预先约定该定时关系T1和第一时间段长度ΔT；或者基站通过信令向用户设备配置该定时关系T1和第一时间段长度ΔT；或者，定时关系T1和第一时间段长度ΔT为预定义的值。
该基站将按照该定时关系T1和第一时间段长度ΔT发送相应的指示字段和对应的第一时间段内的用户设备下行信息。用户设备则根据预定义/预配置的定时关系T1和第一时间段长度ΔT，确定所读取的指示字段指示的第一时间段的起始位置和长度。
可选的，如果该指示字段为周期性发送，则基站和用户设备间还需要预先设定指示字段发送周期T2，该指示字段发送周期也可以通过预配置或预定义的方式在基站和用户设备之间预先设定。
图3是根据本发明实施例提供的传输信息的方法的示意性流程图。
301，用户设备接收基站发送的长度为M个比特的指示字段。
302，该用户设备确定该M个比特中对应于该用户设备的K个比特的位置。
303，该用户设备根据该K个比特的值，确定在第一时间段是否接收并读取该基站发送的下行信息。
根据图3示的方法，用户设备可以根据指示字段确定自身是否在第一时间段内需要接收并读取该基站发送的下行信息。若该用户设备确定需要接收并读取该基站发送的该下行信息，则在第一时间段内监听相应的信道。若该用户设备确定不需要接收并读取该基站发送的该下行信息，则可以在第一时间段内不监听相应的信道。同时，由于使用多个比特位置指示一个用户设备是否需要在第一时间段内接收并读取调度控制信息以及相应的数据信道，这样可以减少不必要的虚警。若该用户设备为处于连接态的用户设备，则该基站是该用户设备的服务基站。若该用户设备是处于空闲态的用户设备，则该基站是该用户设备的驻留小区所在的基站。
可选的，作为一个实施例，该确定该M个比特中对应于该用户设备的K个比特位置，包括：接收该基站预先配置的比特位置指示信息，该比特位置指示信息中包括对应于该用户设备的K个比特位置；根据该比特位置指示信 息，确定对应于该用户设备的K个比特位置。
可选的，作为另一个实施例，该用户设备确定该M个比特中对应于该用户设备的K个比特位置，包括：该用户设备确定K个预设函数的输入信息；该用户设备根据该K个预设函数的输入信息以及该K个预设函数，生成与该用户设备对应的K个数，该K个数用于指示该用户设备对应的K个比特在该M个比特中的位置；该用户设备确定在该M个比特中与该K个数对应的K个比特位置。例如，对于对于S1架构下处于IDLE态的用户设备或者对于Gb架构下准备定时器(Ready Timer)已经超时的用户设备来说，用户设备会周期性地在寻呼时机(Paging Occasion)上接收可能到达的寻呼请求消息(Paging Request message)，因此如果第一时间段包含某处于IDLE态的用户设备的寻呼时机，则该用户设备在第一时间段内期望收到的下行信息为寻呼请求消息；例如，对于在第一时间段内处于连接态的用户设备，则在第一时间段内该用户设备期望收到的下行信息为调度该用户设备接收下行数据的信令和指示该用户设备发送上行数据的信令；对于希望通过随机接入过程(RACH Procedure)接入基站的用户设备来说，当发送了随机接入请求消息后，用户设备需要等待基站反馈随机接入应答消息，并根据该应答消息进行后续的上行发送和下行接收，因此对发送了随机接入请求的用户设备，该用户设备在第一时间段内期望收到的下行信息为随机接入应答消息。
可选的，作为一个实施例，该K个预设函数为K个预设随机函数，该K个数为K个随机数。这样，由于预设函数为随机函数，因此产生的数是随机数，可以使得不同的用户设备产生对应的数具有随机性，从而可以降低虚警的概率。
可选的，作为另一个实施例，该K个预设函数为K个预设散列函数。
可选的，作为另一个实施例，该K个预设函数为K个哈希函数(Hash Function)或者哈希函数对M取模值。
可选的，作为另一个实施例，该K个预设函数为将每个该预设函数的输入等概率地映射到M个输出值的函数。
具体地，该用户设备根据该K个比特的值，确定在第一时间段内是否接收并读取该基站发送的下行信息，包括：若该用户设备确定该K个比特的值均为肯定，则确定在该第一时间段内接收并读取该基站发送的下行信息；若该用户设备确定该K个比特的值中存在至少一位为否定，则确定在该第一时 间段内不接收并读取该基站发送的下行信息。
可以理解的是，图3中所指的用户设备是指基站有可能在第一时间段内向其发送下行信息的用户设备。以寻呼为例，若第一时间段包含了某IDLE态用户设备的某个寻呼时机，则根据寻呼发送的规则，基站有可能在该寻呼时机上发送寻呼请求消息给该用户设备，因此该用户设备应该获取对应于第一时间段的指示字段以确定是否需要读取第一时间段中的下行信息。进一步，这些用户设备可以分为三类：第一类用户设备，第二类用户设备和第三类用户设备。
第一类用户设备即为图1所示方法中的P个用户设备，基站在第一时间段内确定向第一类用户设备发送下行信息，因此对应于第一时间段的指示字段中对应于每个第一类用户设备的K个比特的值一定为肯定，因此，第一类用户设备一定会进一步接收和读取该第一时间段内的下行信息。因此，可知，本发明的方法不会使任何一个第一类用户设备遗漏掉在第一时间段内发送的下行信息。
第二类用户设备为在第一时间段内基站没有向其发送下行信息的用户设备，并且在指示字段中对应于每个第二类用户设备的K个比特的值中存在至少一位为否定。因此，第二类用户设备在获取了指示字段后，即可确定在该第一时间段内不接收并读取该基站发送的下行信息，从而降低了功率消耗。
第三类用户设备为在第一时间段内基站没有向其发送下行信息的用户设备，并且在指示字段中对应于第三类用户设备的K个比特的值均为肯定。因此第三类用户设备在读取完指示字段后，会在第一时间段内接收并读取该基站发送的下行信息，但是由于基站实际上并没有向其发送下行信息，第三类用户设备在读取基站发送的下行信息的过程中将找不到对应于自己的下行信息(匹配于自身标识的下行信息)，从而停止读取后续的信息，例如，第三类连接态用户设备获取指示字段后，由于所有K个比特位置均为被置位，则会继续读取PDCCH中的调度信息，然而由于基站并没有实际调度该用户设备，因此该用户设备将无法在PDCCH中找到对应的调度信息，因此也不会再继续去读取PDSCH或者发送PUSCH。第三类用户设备的出现，实际上是因为第三类用户设备的K个比特位置恰好和第一时间段内的所有第一类用户设备置位的比特位置发生了重叠，属于虚警情况。但是，第三类设备会 在后续的下行信息读取过程中，获知基站并没有向其发送下行信息，因此第三类设备仅仅是不能达到第二类设备较少下行信令功耗读取的目的，并不会引入其他后果。本发明的方法，在合理的取值K和M值的情况下，可以将第三类用户设备的比例控制得较低，低于预设门限以下。
可选的，该下行信息的类型为以下任一种：寻呼信令、用于应答上行随机接入请求的随机接入响应、用于调度下行用户设备接收下行数据的信令、用于指示用户设备发送上行数据的信令。
可选的，作为一个实施例，该K个预设函数的输入信息与该下行信息的类型相对应。也就是说，该用户设备确定K个预设函数的输入信息，包括：该用户设备根据该下行信息的类型，确定该K个预设函数的输入信息。
具体地，在该下行信息为该寻呼信令情况下，该第i个用户设备的K个预设函数的输入信息包括以下至少一个：该寻呼信令对应的用户设备的标识和系统时间信息。该系统时间信息包括以下中的任一个或多个：系统超帧号、系统帧号和系统子帧号。每个用户设备的标识可以是不同的，因此可以保证基于该K个预设函数输出的K个数都相同的概率较低。特别的，对于一些函数(例如哈希函数)，如果输入不同，输出会有很大概率不同。因此更能保证针对不同的用户设备输出的K个数都相同的概率较低，进而避免虚警的发生。
具体地，在该下行信息为用于应答上行随机接入请求的随机接入响应的情况下，该第i个用户设备的K个预设函数的输入信息包括以下至少一个：该随机接入请求中的标识信息和系统时间信息。该系统时间信息包括以下中的任一个或多个：系统超帧号、系统帧号和系统子帧号。可选的，该随机接入请求中的标识信息为随机接入请求中包含的随机数或者该随机接入请求对应的接入序列对应的索引值。该随机接入请求中的标识信息，根据基站和用户设备的约定，为随机接入请求中包含的随机数或者该随机接入请求对应的接入序列对应的索引值。每个第一类用户设备的随机接入请求中的标识信息可以是不同的，因此基于K个预设函数输出的K个数都相同的概率较低。特别的，对于一些函数(例如哈希函数)，如果输入不同，输出会有很大概率不同。因此更能保证针对不同的用户设备输出的K个数都相同的概率较低，进而避免虚警的发生。
具体地，在该下行信息为该用于调度下行用户设备接收下行数据的信令 或者该用于指示用户设备发送上行数据的信令的情况下，该第i个用户设备的K个预设函数的输入信息包括以下至少一个：该信令对应的用户设备的标识和系统时间信息。该系统时间信息包括以下中的任一个或多个：系统超帧号、系统帧号和系统子帧号。每个第一类用户设备的标识是不同的，因此基于该K个预设函数输出的K个数都相同的概率较低。特别的，对于一些函数(例如哈希函数)，如果输入不同，输出会有很大概率不同。因此更能保证针对不同的用户设备输出的K个数都相同的概率较低，进而避免虚警的发生。
可选的，作为另一个实施例，该K个预设函数的输入信息与该用户设备所处的状态相对应。也就是说，该用户设备确定该K个预设函数的输入信息，包括：该用户设备根据该用户设备所处的状态，确定该K个预设函数的输入信息。
具体地，在该用户设备处于空口空闲态的情况下，该K个预设函数的输入信息包括以下至少一个：该用户设备的国际移动用户识别码、该用户设备的临时逻辑链路标识；在定该用户设备处于空口连接态的情况下，该K个预设函数的输入信息为该用户设备的连接态标识。
可选的，作为另一个实施例，该用户设备确定该K个预设函数的输入信息，包括：该用户设备根据预先设定，确定该K个预设函数的输入信息。
进一步，在该根据该K个预设函数的输入信息以及该K个预设函数，生成与该用户设备对应的K个数之前，该方法还包括：该用户设备接收该基站发送的K和M的取值。
可选的，作为一个实施例，指示字段可以周期性发送或基于事件触发进行发送，用于指示用户设备在不同的第一时间段内是否接收并读取下行信息的情况下，该基站可以保持M值不变，只更新K值并将更新后的K值发送给该用户设备；或者，该基站可以保持K值不变，只更新M值并将更新后的M值发送给该用户设备；或者，同时更新K值和M值，并将更新后的K值和M值发送给该用户设备。在此情况下，如果该用户设备仅接收到K的取值，则确定M的取值与上次接收到的M的取值相同。类似的，如果该用户设备仅接收到M的取值，则确定K的取值与上次接收到的K的取值相同。
为了帮助本领域技术人员更好地理解本发明，下面将结合具体实施例对本发明进行描述。可以理解的是，该具体实施例仅是为了帮助理解本发明， 而并非对本发明的限制。
不失一般性，这里以M＝6，K＝2为例，并以寻呼为例加以说明。基站确定需要在第一时间段内的寻呼时刻向用户设备1和用户设备2发送寻呼信令。假设，对于每个用户设备使用2个随机函数确定随机数，则基站可以使用用户设备的标识、系统超帧号、帧号和子帧号中的任一个或多个作为随机函数的输入。该用户设备的标识可以是用户设备的临时逻辑链路标识(Temporary Logical Link Identifier，简称：TLLI)、国际移动识别码(International Mobile Subscriber Identification Number，简称：IMSI)、系统架构演进(System Architecture Evolution，简称:SAE)临时移动用户识别码(SAE-Temporary Mobile Subscriber Identit，简称：S-TMSI)中的任一个或多个。例如，基站可以使用用户设备1的标识符作为用户设备1的随机函数1的输入，得到用户设备1的随机数1；基站还可以使用用户设备1标识符作为用户设备1的随机函数2的输入，得到用户设备1的随机数2。再如，基站可以使用用户设备1的IMSI作为用户设备1的随机函数1的输入，得到用户设备1的随机数1；基站还可以使用用户设备1的TLLI作为用户设备1的随机函数2的输入，得到用户设备1的随机数2。类似的，基站还可以使用用户设备2的随机函数得到用户设备2对应的随机数1和随机数2。该随机函数及其输入参数均是预先指定的，即基站和用户设备会使用相同的规则映射得到对应的随机数。基站在分别确定了用户设备1和用户设备2的随机数后，可以确定在长度为M的比特的指示字段中与每个用户设备的2个随机数对应的2个比特位置。假设M的取值为6，用户设备1的随机数1对应第1比特位置和用户设备1的随机数2对应第3比特位置；用户设备2的随机数1对应第2比特位置和用户设备2的随机数2对应第3比特位置。在此情况下，可以将M中的第1、2、3比特的值设置为肯定。可以理解，指示字段中的M位比特的初始状态为否定。例如，使用0表示否定，1表示肯定，则指示字段初始状态中第0位至第5位均为0，即000000。在本例中，可以将第1、2、3比特置位为1，即指示字段状态变为011100。基站在对指示字段进行置位后，将置位后的指示字段发送给这四个用户设备。
作为一个例子，具体从K个预设函数输出的K个数映射到M位指示字段中的K个比特位置的方法如下示意。假设用户设备1和用户设备2被寻呼，其对应的TLLI号分别记为TLLI_1和TLLI_2。本例中基站和用户设备间预 设两个函数可以定义为Hash(TLLI)和Hash(TLLI||SuperFrame number)，其中Hash()表示哈希函数，TLLI||SuperFrame number表示TLLI和第一时间段对应的SuperFrame number的级联。不失一般性，假设Hash()函数的输出为一个8比特长的数(取值范围在0～255)。则对于用户设备1基站根据两个预设函数Hash(TLLI_1)和Hash(TLLI_1||SuperFrame number)，生成两个长为8比特的数。不失一般性，假设分别为67和123，则按照预设规则，基站分别对M取模值，分别得到取模值后的输出为1和3，则基站将第1比特位置和第3比特位置置位为肯定(假设1表示肯定)；进一步，对于用户设备2，基站根据两个预设函数Hash(TLLI_2)和Hash(TLLI_2||SuperFrame number)，生成两个长为8比特的数，不失一般性，假设分别为254和57，则按照预设规则，基站分别对M取模值，分别得到取模值后的输出为2和3，则基站将第2比特位置和第3比特位置置位为肯定(假设1表示肯定)；因此基站根据用户设备1和用户设备2的TLLI和第一时间段对应的SuperFrame Number，可知用户设备1应置位第1和第3比特位置，而用户设备2应置位第2比特位置和第3比特位置，因此综合起来指示字段应该置位第1、第2和第3比特位置，置位后的为011100。
图4是本发明实施例提供的一种传输信息的方法的示意图。图4所示的方法是以寻呼信令为例。用户设备在接收到了指示字段后，可以使用K个预设随机函数，确定K个随机数，并确定该指示字段中与该K个随机数对应的K个比特位置，并根据K个比特的值确定是否在该第一时间段内的寻呼时机(Paging Occasion)被调度。可以理解的是，用户设备使用的随机函数以及随机函数的输入与基站使用的随机函数以及随机函数的输入是相同的。在此情况下，用户设备1可以确定出对应于随机数1的比特位置为第1比特位置，对应于随机数2的比特位置为第3比特位置。用户设备2可以确定对应于随机数1的比特位置为第2比特位置，对应于随机数2的比特位置为第3比特位置。同时，用户设备1通过读取指示字段中第1比特位置和第3比特位置，得知这两个比特位置均被置位为肯定，则用户设备1可以确定在对应寻呼时机可能被调度，可以确定在对应第一时间段内的寻呼时机上需要进一步读取调度信息以读取对应的寻呼请求消息。用户设备2通过读取指示字段中的第2比特位置和第3比特位置，获知这两个比特位置均被置位为肯定，则用户设备2可以确定在该第一时间段内的寻呼时机可能被调度，可以确定 在对应第一时间段内的寻呼时机需要进一步读取调度信息以匹配并读取对应的寻呼请求消息。假设，在N个用户设备中，还有用户设备3、用户设备4和用户设备5在该第一时间段内接收读取指示信息。用户设备3确定对应于随机数1的比特位置为第3比特位置，对应于随机数2的比特位置为第4比特位置，则用户设备3通过读取该指示字段，发现第3比特位置为肯定，第4比特位置为否定。在此情况下，用户设备3确定在对应第一时间段内的寻呼时机均不会被调度。类似的，假设用户设备4确定对应于随机数1的比特位置为第4比特位置，对应于随机数2的比特位置为第5比特位置，则用户设备4通过读取该指示字段，发现该指示字段中的第4比特位置和第5比特位置均为否定。在此情况下，用户设备4可以确定在该第一时间段内的所有寻呼时机均不会被调度。假设用户设备5确定对应于随机数1的比特位置为第1比特位置，对应于随机数2的比特位置为第2比特位置，则用户设备5通过读取该指示字段，发现该指示字段中的第1比特位置和第2比特位置均为肯定。在此情况下，用户设备5认为自身可能在该第一时间段内的寻呼时机中被调度，可以确定在对应第一时间段内的寻呼时机需要进一步读取调度信息以确定自己是否被寻呼。用户设备1和用户设备2在确定可能被在第一时间段内的寻呼时机被调度的情况下，可以读取第一时间段内的物理下行控制信道(Physical Downlink Control Channel，简称：PDCCH)，以及可选的物理下行共享信道(Physical Downlink Shared Channel，简称：PDSCH)，以确定是否被寻呼。用户设备3和用户设备4可以确定在第一时间段内的所有寻呼时机内肯定不会被寻呼，因此可以关闭接收机继续进入睡眠模式，而不读取任何PDCCH和PDSCH。用户设备5，实际上并没有在第一时间段内被寻呼(根据假设第一时间段内仅有用户设备1和用户设备2被寻呼)，但是由于用户设备5对应的两个比特位置(第一比特位置和第二比特位置)，刚好和用户设备1和用户设备2的某个比特位置重合，因此属于虚警的情况。这种情况下，用户设备5会认为自身可能会在第一时间段内被寻呼，因此会去检查第一时间段内的PDCCH，在检查所有可能的PDCCH后，发现自身并没有被寻呼。在本例子中，用户设备1和用户设备2属于第一类用户设备，用户设备3和用户设备4属于第二类用户设备，用户设备5属于第三类用户设备。
进一步，作为一个例子，具体从K个(以K＝2为例)预设函数输出的K 个数映射到M位指示字段中的K个比特位置的方法如下示意。根据前边例子，指示字段为011100。对于第一类用户设备中的用户设备1和用户设备2被寻呼，其对应的TLLI号分别记为TLLI_1和TLLI_2。本例中基站和用户设备间预设两个函数可以定义为Hash(TLLI)和Hash(TLLI||SuperFrame number)，其中Hash()表示哈希函数，TLLI||SuperFrame number表示TLLI和第一时间段对应的SuperFrame number的级联。不失一般性，假设Hash()函数的输出为一个8比特长的数(取值范围在0～255)。用户设备1根据两个预设函数Hash(TLLI_1)和Hash(TLLI_1||SuperFrame number)，生成两个长为8比特的数，不失一般性，假设分别为67和123，则按照预设规则，用户设备1分别对M取模值，分别得到取模值后的输出为1和3，因此用户设备1通过读取指示字段中第1比特位置和第3比特位置判定自己是否读取后续的PDCCH和PDSCH以读取寻呼消息：指示字段中第1比特位置和第3比特位置得知这两个比特位置均被置位为肯定，则用户设备1可以确定在对应寻呼时机可能被调度，可以确定在对应第一时间段内的寻呼时机上需要进一步读取调度信息以读取对应的寻呼请求消息。进一步，用户设备2根据两个预设函数Hash(TLLI_2)和Hash(TLLI_2||SuperFrame number)，生成两个长为8比特的数，不失一般性，假设分别为254和57，则按照预设规则，用户设备2分别对M取模值，分别得到取模值后的输出为2和3，因此用户设备2通过读取指示字段中第2比特位置和第3比特位置判定自己是否读取后续的PDCCH和PDSCH以读取寻呼消息：指示字段中第2比特位置和第3比特位置得知这两个比特位置均被置位为肯定，则则用户设备2可以确定在对应寻呼时机可能被调度，可以确定在对应第一时间段内的寻呼时机上需要进一步读取调度信息以读取对应的寻呼请求消息。对于第二类用户设备中的用户设备3和用户设备4，其对应的TLLI号其对应的TLLI号分别记为TLLI_3和TLLI_4。用户设备3根据两个预设函数Hash(TLLI_3)和Hash(TLLI_3||SuperFrame number)，生成两个长为8比特的数，不失一般性，假设分别为21和100，则按照预设规则，用户设备3分别对M取模值，分别得到取模值后的输出为3和4，因此用户设备3通过读取指示字段中第3比特位置和第4比特位置判定自己是否读取后续的PDCCH和PDSCH以读取寻呼消息：用户设备3通过读取该指示字段，发现第3比特位置为肯定，第4比特位置为否定，在此情况下，用户设备3确定在对应第一时间段内的寻 呼时机均不会被调度。类似地，用户设备4根据两个预设函数Hash(TLLI_4)和Hash(TLLI_4||SuperFrame number)，生成两个长为8比特的数，不失一般性，假设分别为244和59，则按照预设规则，用户设备4分别对M取模值，分别得到取模值后的输出为4和5，因此用户设备4通过读取指示字段中第4比特位置和第5比特位置判定自己是否读取后续的PDCCH和PDSCH以读取寻呼消息：用户设备4发现该指示字段中的第4比特位置和第5比特位置均为否定，在此情况下，用户设备4可以确定在该第一时间段内的所有寻呼时机均不会被调度。对于第三类用户设备中的用户设备5，其对应的TLLI号为TLLI_5。用户设备5根据两个预设函数Hash(TLLI_5)和Hash(TLLI_5||SuperFrame number)，生成两个长为8比特的数，不失一般性，假设分别为181和212，则按照预设规则，用户设备5分别对M取模值，分别得到取模值后的输出为1和2，用户设备5，实际上并没有在第一时间段内被寻呼(根据假设第一时间段内仅有用户设备1和用户设备2被寻呼)，但是由于用户设备5对应的两个比特位置(第一比特位置和第二比特位置)，刚好和用户设备1和用户设备2的某个比特位置重合，因此属于虚警的情况。这种情况下，用户设备5会认为自身可能会在第一时间段内被寻呼，因此会去检查第一时间段内的PDCCH，在检查所有可能的PDCCH后，发现自身并没有被寻呼。
图5是本发明实施例提供的另一传输信息的方法的示意图。图5所示的方法是以发送随机接入信道(Random Access Channel，简称：RACH)消息的用户设备为例。假设用户设备在预设的RACH资源上发送随机接入请求消息给基站，基站会在RACH资源后的一个或多个帧内回复随机接入请求响应消息；否则用户设备认为其随机接入请求消息没有被响应。假设在某RACH资源上，用户设备1、用户设备2、用户设备3和用户设备4均发送了随机接入请求消息，由于上行资源受限等原因，在RACH资源后的一个或多个帧内，基站确定在某个帧内能够向用户设备1和用户设备2发送随机接入响应消息。假设，不失一般性，对于每个用户设备使用2个随机函数确定随机数，则基站可以使用用户设备发送的随机接入请求中的随机数作为随机函数的至少一个输入参数以确定用户设备1和用户设备2的随机数。基站在分别确定了用户设备1和用户设备2的随机数后，可以确定在长度为M的比特的指示字段中与每个用户设备的2个随机数对应的2个比特位置。假设M的 取值为6，用户设备1的随机数1对应第1比特位置和用户设备1的随机数2对应第3比特位置；用户设备2的随机数1对应第2比特位置和用户设备2的随机数2对应第3比特位置。在此情况下，可以将M中的第1、2、3比特的值设置为肯定。可以理解，指示字段中的M位比特位置的初始状态为否定。例如，使用0表示否定，1表示肯定，则指示字段初始状态中第0位至第5位均为0，即000000。在本例中，可以将第1、2、3比特位置置位为1，即指示字段状态变为011100。基站在对指示字段进行置位后，将置位后的指示字段发送给所有在该帧内可能需要读取随机接入响应的用户设备。用户设备在接收到了指示字段后，可以使用K个预设随机函数，确定K个随机数，并确定该指示字段中与该K个随机数对应的K个比特位置，并根据K个比特的值确定是否在该能够用于发送随机接入响应报文的帧被调度反馈随机接入响应报文。可以理解的是，用户设备使用的随机函数以及随机函数的输入与基站使用的随机函数以及随机函数的输入是相同的。在此情况下，用户设备1可以确定出对应于随机数1的比特位置为第1比特位置，对应于随机数2的比特位置为第3比特位置。用户设备2可以确定对应于随机数1的比特位置为第2比特位置，对应于随机数2的比特位置为第3比特位置。同时，用户设备1通过读取该指示字段，获知第1比特位置和第3比特位置均被置位为肯定，用户设备2通过读取该指示字段，获知第2比特位置和第3比特位置均被置位为肯定，则用户设备1和用户设备2可以确定在该帧中自己可能会被反馈随机接入响应报文，因此确定需要读取PDCCH以确定是否有随机接入响应报文发送给自己。假设，用户设备3确定对应于随机数1的比特位置为第3比特位置，对应于随机数2的比特位置为第4比特位置，则用户设备3通过读取该指示字段，获知第3比特位置为肯定，第4比特为否定。在此情况下，用户设备3确定基站不会在该帧中发送随机接入响应报文给用户设备3，因此用户设备3不需要读取后续PDCCH及相关PDSCH。类似的，假设用户设备4确定对应于随机数1的比特位置为第4比特位置，对应于随机数2的比特位置为第5比特位置，则用户设备4通过读取指示字段，获知第4比特位置和第5比特位置均为否定。在此情况下，用户设备4可以确定基站不会在该帧中发送RACH响应报文给用户设备4，因此可以停止读取后续可能承载随机接入响应或随机接入响应调度信息的PDCCH。用户设备1和用户设备2在确定基站可能在该帧中向其发送随机接入响应报文 的情况下，会继续读取该帧的PDCCH或者PDCCH及其对应的PDSCH资源，以获取随机接入响应报文。用户设备3和用户设备4可以确定基站肯定不会在该能够用于发送随机接入响应报文的帧内发送随机接入响应报文，因此用户设备3和用户设备4可以跳过该帧，不读取PDCCH及其对应的PDSCH。在本例子中，用户设备1和用户设备2属于第一类用户设备，用户设备3和用户设备4属于第二类用户设备。
进一步，作为一个例子，具体从K个预设函数(以K＝2为例)输出的K个数映射到M位指示字段中的K个比特位置的方法如下示意。根据前边例子，指示字段为011100。对于第一类用户设备中的用户设备1和用户设备2，其对应的随机接入请求消息中的随机数分别为r1和r2。本例中基站和用户设备间预设两个函数可以定义为Hash(r)和Hash(r||SuperFrame number)，其中Hash()表示哈希函数，r||SuperFrame number表示随机数r和第一时间段对应的SuperFrame number的级联。不失一般性，假设Hash()函数的输出为一个8比特长的数(取值范围在0～255)。用户设备1根据两个预设函数Hash(r1)和Hash(r1||SuperFrame number)，生成两个长为8比特的数，不失一般性，假设分别为67和123，则按照预设规则，用户设备1分别对M取模值，分别得到取模值后的输出为1和3，因此用户设备1确定对应于用户设备1的K个(2个)比特位置为第1比特位置和第3比特位置；类似地，用户设备2根据两个预设函数Hash(r2)和Hash(r2||SuperFrame number)，生成两个长为8比特的数，不失一般性，假设分别为254和57，则按照预设规则，用户设备2分别对M取模值，分别得到取模值后的输出为2和3，因此用户设备2确定对应于用户设备2的K个(2个)比特位置为第2比特位置和第3比特位置；对于第二类用户设备中的用户设备3和用户设备4，其对应的随机接入请求消息中的随机数分别为r3和r4。用户设备3根据两个预设函数Hash(r3)和Hash(r3||SuperFrame number)，生成两个长为8比特的数，不失一般性，假设分别为21和100，则按照预设规则，用户设备3分别对M取模值，分别得到取模值后的输出为3和4，因此用户设备3确定对应于用户设备3的K个(2个)比特位置为第3比特位置和第4比特位置；类似地，用户设备4根据两个预设函数Hash(r4)和Hash(r4||SuperFrame number)，生成两个长为8比特的数，不失一般性，假设分别为244和59，则按照预设规则，用户设备4分别对M取模值，分别得到取模值后的输出为4和5，因此 用户设备4确定对应于用户设备4的K个(2个)比特位置为第4比特位置和第5比特位置。
图6是本发明实施例提供的另一传输信息的方法的示意图。图6所示的方法是以普通上下行调度为例。用户设备1和用户设备2。假设，对于每个用户设备使用2个随机函数确定随机数，则基站可以使用用户设备的标识符作为随机函数的输入以确定用户设备1和用户设备2的随机数。基站在分别确定了用户设备1和用户设备2的随机数后，可以确定在长度为M的比特的指示字段中与每个用户设备的2个随机数对应的2个比特位置。假设M的取值为6，用户设备1的随机数1对应第1比特位置和用户设备1的随机数2对应第3比特位置；用户设备2的随机数1对应第2比特位置和用户设备2的随机数2对应第3比特位置。在此情况下，可以将M中的第1、2、3比特的值设置为肯定。可以理解，指示字段中的M位比特位置的初始状态为否定。例如，使用0表示否定，1表示肯定，则指示字段初始状态中第0位至第5位均为0，即000000。在本例中，可以将第1、2、3比特位置置位为1，即指示字段状态变为011100。基站在对指示字段进行置位后，将置位后的指示字段发送给第一时间段内所有可能被调度的用户设备。用户设备在接收到了指示字段后，可以使用K个预设随机函数，确定K个随机数，并确定该指示字段中与该K个随机数对应的K个比特的值，并根据K个比特位的值确定是否在该调度时机(scheduling occasion)被调度。可以理解的是，用户设备使用的随机函数以及随机函数的输入与基站使用的随机函数以及随机函数的输入是相同的。在此情况下，用户设备1可以确定出对应于随机数1的比特为第1比特位置，对应于随机数2的比特为第3比特位置。用户设备2可以确定对应于随机数1的比特为第2比特位置，对应于随机数2的比特为第3比特位置。同时，用户设备1可以通过指示字段，获知第1比特位置和第3比特位置均被置位为肯定，用户设备2通过指示字段，获知第2比特和第3比特位置均被置位为肯定，则用户设备1和用户设备2可以确定在该调度时机可能会被调度，会进一步读取和检查PDCCH中的调度信息。假设，用户设备3确定对应于随机数1的比特为第3比特位置，对应于随机数2的比特为第4比特位置，则用户设备3可以确定该指示字段中的第3比特为肯定，第4比特为否定。在此情况下，用户设备3确定在该调度时机未被调度。类似的，假设用户设备4确定对应于随机数1的比特为第4比特位 置，对应于随机数2的比特为第5比特位置，则用户设备4可以确定该指示字段中的第4比特和第5比特均为否定。在此情况下，用户设备4可以确定在该调度时机未被调度。用户设备1和用户设备2在确定在该调度时机可能被调度的情况下，确定读取和解调该调度时机中的PDCCH，通过读取调度实际中PDCCH上承载的对应的调度信息，进一步根据调度信息的指示在下行数据信道(如PDSCH)上接收基站发送的下行数据或在上行数据信道(如PUSCH)上发送上行数据。用户设备3和用户设备4可以确定基站肯定不会在该调度时机内对自己进行调度，因此用户设备3和用户设备4可以跳过该调度时机。在本例子中，用户设备1和用户设备2属于第一类用户设备，用户设备3和用户设备4属于第二类用户设备。
进一步，作为一个例子，具体从K个预设函数(以K＝2为例)输出的K个数映射到M位指示字段中的K个比特位置的方法如下示意。根据前边例子，指示字段为011100。对于第一类用户设备中的用户设备1和用户设备2，其对应的调度用用户设备ID为C-RNTI_1和C-RNTI_2。本例中基站和用户设备间预设两个函数可以定义为Hash(C-RNTI_1)和Hash(C-RNTI_1||SuperFrame number)，其中Hash()表示哈希函数，C-RNTI||SuperFrame number表示C-RNTI和第一时间段对应的SuperFrame number的级联。不失一般性，假设Hash()函数的输出为一个8比特长的数(取值范围在0～255)。用户设备1根据两个预设函数Hash(C-RNTI_1)和Hash(C-RNTI_1||SuperFrame number)，生成两个长为8比特的数，不失一般性，假设分别为67和123，则按照预设规则，用户设备1分别对M取模值，分别得到取模值后的输出为1和3，因此用户设备1确定对应于用户设备1的K个(2个)比特位置为第1比特位置和第3比特位置；类似地，用户设备2根据两个预设函数Hash(C-RNTI_2)和Hash(C-RNTI_2||SuperFrame number)，生成两个长为8比特的数，不失一般性，假设分别为254和57，则按照预设规则，用户设备2分别对M取模值，分别得到取模值后的输出为2和3，因此用户设备2确定对应于用户设备2的K个(2个)比特位置为第2比特位置和第3比特位置；对于第二类用户设备中的用户设备3和用户设备4，其对应的调度用用户设备ID为C-RNTI_3和C-RNTI_4。用户设备3根据两个预设函数Hash(C-RNTI_3)和Hash(C-RNTI_3||SuperFrame number)，生成两个长为8比特的数，不失一般性，假设分别为21和100， 则按照预设规则，用户设备3分别对M取模值，分别得到取模值后的输出为3和4，因此用户设备3确定对应于用户设备3的K个(2个)比特位置为第3比特位置和第4比特位置；类似地，用户设备4根据两个预设函数Hash(C-RNTI_4)和Hash(C-RNTI_4||SuperFrame number)，生成两个长为8比特的数，不失一般性，假设分别为244和59，则按照预设规则，用户设备4分别对M取模值，分别得到取模值后的输出为4和5，因此用户设备4确定对应于用户设备4的K个(2个)比特位置为第4比特位置和第5比特位置。
可选的，作为一个实施例，基站可以分别为不同类型的下行信息生成不同的指示字段，每种类型的下行信息的指示字段的M值和K值可以是不同的，且每种下行信息的指示字段对应的时间段也可以是不同的。
例如，假设基站需要为三种类型的下行信息生成不同的指示字段：寻呼信令、用于应答上行随机接入请求的随机接入响应以及普通调度信令(即用于调度下行用户设备接受下行数据的信令或用于指示用户设备发送上行数据的信令)。假设寻呼信令对应的指示字段为指示字段一，其对应M1和K1；随机接入响应消息对应的指示字段为指示字段二，其对应M2和K2；普通调度信令对应的指示字段为指示字段三，其对应M3和K3。M1、M2和M3的取值可以不同，K1、K2和K3的值也可以不同。该指示字段一、指示字段二和指示字段三，可以分别对应不同的时间段。可以理解的是，M1、M2和M3以及K1、K2和K3均为大于1的正整数。
不同类型的下行信息的不同指示字段可以在同一下行广播报文或公共下行控制单元中发送。
可选的，作为一个实施例，也可以将寻呼消息、用于应答上行随机接入请求的随机接入响应、用于调度下行用户设备接收下行数据的信令、用于指示用户设备发送上行数据的信令用同一个M位指示字段联合指示多种下行信息是否在第一时间段内发送。
图7是根据本发明实施例提供的另一传输信息的方法的示意图。不失一般性，图7所示的方法是以寻呼消息、随机接入应答和普通上下行调度为例。如图7所示，假设第一类用户设备为在第一时间段内，基站向其发送下行信息的用户设备，在图中所示例子中包括用户设备1(UE1为用户设备1的标识，例如TLLI)、用户设备a(Ra为发送的随机接入请求消息中的随机数) 和用户设备m(UEm为用户设备m的用于调度的标识，例如C-RNTI)。其中，用户设备1为处于IDLE态在第一时间段内被寻呼的用户设备；用户设备a为在第一时间段之前发送了随机接入请求消息，其随机接入响应消息在第一时间段内被发送给用户设备a；用户设备m为S1架构下处于连接态的用户设备或者Gb架构下Ready Timer未超时的用户设备，并且在第一时间段内基站调度用户设备m向其发送下行数据或指示其发送上行数据。假设，对于每个用户设备使用2个随机函数(K＝2)确定随机数，则基站可以使用用户设备的标识符或者随机接入中的随机数作为随机函数的输入，以确定第一类用户设备对应的随机数。基站在分别确定了第一类用户设备的随机数后，可以确定在长度为M的比特的指示字段中与每个第一类用户设备的2个随机数对应的2个比特位置。假设M的取值为10，用户设备1的随机数1对应第1比特位置和用户设备1的随机数2对应第2比特位置；用户设备a的随机数1对应第2比特位置和用户设备a的随机数2对应第7比特位置；用户设备m的随机数1对应第3比特位置和用户设备m的随机数2对应第7比特位置。在此情况下，可以将M中的第1、2、3、7比特的值设置为肯定。可以理解，指示字段中的M位比特位置的初始状态为否定。例如，使用0表示否定，1表示肯定，则指示字段初始状态中第0位至第9位均为0，即0000000000。在本例中，可以将第1、2、3、7比特位置置位为1，即指示字段状态变为0111000100。基站在对指示字段进行置位后，将置位后的指示字段发送给第一时间段内可能被寻呼、被应答随机接入响应和被调度的用户设备。
所有可以被基站在该第一时间段内寻呼、发送随机接入响应和被调度的用户设备，都会获取和检查指示字段的内容。在获取指示字段后，用户设备可以使用K个预设随机函数，确定K个随机数，并确定该指示字段中与该K个随机数对应的K个比特的值，并根据K个比特位的值确定基站是否会在第一时间段内向该用户设备发送下行信息，以确定是否需要进一步读取基站发送的下行信息。可以理解的是，用户设备使用的随机函数以及随机函数的输入与基站使用的随机函数以及随机函数的输入是相同的。
进一步，分别对第一类用户设备、第二类用户设备和第三类用户设备举例说明。
第一类用户设备：在此情况下，用户设备1、用户设备a和用户设备m 属于第一类用户设备。用户设备1可以确定出对应于随机数1的比特为第1比特位置，对应于随机数2的比特为第2比特位置。用户设备a可以确定对应于随机数1的比特为第2比特位置，对应于随机数2的比特为第7比特位置。用户设备m可以确定对应于随机数1的比特为第3比特位置，对应于随机数2的比特为第7比特位置。同时，用户设备1可以通过指示字段，获知第1比特位置和第2比特位置均被置位为肯定，用户设备a通过指示字段，获知第2比特和第3比特位置均被置位为肯定，用户设备m通过指示字段，获知第3比特和第7比特位置均被置位为肯定，则用户设备1，用户设备a和用户设备m可以确定在该第一时间段内基站可能会发送下行信息给他们，因此会进一步读取下行信息。对于用户设备1，会继续读取PDCCH来获取寻呼请求消息；对于用户设备a，会继续读取PDCCH，并会查找到发送给它的随机接入相应消息；对于用户设备m，会继续读取PDCCH查找调度信息，会得到对应于用户设备m的调度消息，从而进一步读取PDSCH或者在指示的PUSCH上发送上行数据。
第二类用户设备：用户设备b和用户设备n属于第二类用户设备。假设用户设备n为该类用户设备中的连接态用户设备，其在第一时间段内并没有被基站调度，但是该连接态用户设备，确定对应于随机数1的比特为第6比特位置，对应于随机数2的比特为第9比特位置，则用户设备n可以确定该指示字段中的第6比特和第9比特均为否定。在此情况下，用户设备n可以确定在该第一时间段内的调度时机中未被基站调度。假设用户设备b，为该类用户设备中的发起随机接入的用户设备，其在第一时间段内并没有被基站反馈随机接入应答消息，但是该连接态用户设备，确定对应于随机数1的比特为第3比特位置，对应于随机数2的比特为第4比特位置，则用户设备n可以确定该指示字段中的第3比特为肯定，第4比特均为否定。在此情况下，用户设备b可以确定在该第一时间段内，基站未反馈随机接入响应，因此停止读取PDCCH。
第三类用户设备：在本例中，用户设备2属于第三类用户设备。假设用户设备2为该类用户设备中的IDLE态用户设备，其某个寻呼时机包含在第一时间段内。假设用户设备2，确定对应于随机数1的比特为第1比特位置，对应于随机数2的比特为第2比特位置，由于这两个比特已经分别被第一类用户设备中的用户设备1和用户设备a置位，则用户设备2确定该指示字段 中的第1比特和第2比特均为肯定。在此情况下，用户设备2可以确定在该第一时间段内基站可能会发送寻呼请求消息给用户设备2，因此会进一步读取读取PDCCH，并会查找是否有对应于自己的寻呼消息。由于基站实际在第一时间段内并没有向用户设备2发送寻呼请求消息，用户设备2将找不到任何匹配自己标识的寻呼消息，因此最终会停止读取后续信道。
在第一时间段内，第一类用户设备是基站实际发送信息的用户设备，本发明方案保证了所有第一类用户设备不会遗漏任何发送给自己的下行信息；第二类用户设备是基站没有发送下行信息的用户设备，且第二类用户设备通过获取指示字段，避免了读取后续所有的下行信息(例如PDCCH)，因此节省了功耗；第三类用户设备，基站没有在第一时间段内发送相关下行信息给第三类用户设备，但是第三类用户设备属于虚警，第三类用户设备在获取并检查指示字段后，仍然会读取PDCCH等下行信道，没有达到节省功耗的目的，但是也没有引入其他开销。通过，选取合适的M和K值，可以将第三类用户设备的比例，即虚警率，控制在预定门限之下。
可以理解的是，K和M的取值，与第一时间段内的平均负载，即第一时间段内需要被调度和发送下行信息的第一类用户设备的平均数量相关(假设为P’，这里的P’为平均第一类用户设备数)。当平均负载重时，M的取值应该增大，当平均负载较轻时，则M取值可以适当减小。当K值确定的条件下，如果负载较重，P’个用户设备很可能将M位中的绝大部分比特位置置位肯定，此时对于在第一时间段内没有被基站调度或发送下行信息的用户设备来说，其对应的K个比特位置将具有更高的概率均被置位为肯定(此时即为虚警)。因此，在负载变重时，应该适当加大指示字段的比特数(即M的值)。对于K值，其最优值实际上和平均负载数P’以及M值有关。因此，当平均负载变化时，应该允许基站或其他网络设备想所有需要读取指示字段的用户设备发送和更新K值和/或M值。
进一步，基站还可以根据需要调整K和/或M的取值。若需要调度的用户设备的数量(假设为P)比较少，则可以适当减少M的取值。若需要调度的用户设备数量比较多，则可以适当增加增加M的取值，以降低虚警概率。对应地，对应于不同的M取值和需要调度的用户设备的数量，基站可以得到最优或较优的K的取值，例如典型地，K值可以取
Figure PCTCN2015085198-appb-000002
当然，可选地，为了降低实现复杂度，K也可以简单地固定取2或3。基站可以将确定 好的M的取值发送给所有需要读取指示字段的用户设备。可选的，基站也可以将K值发送给所有需要读取指示字段的用户设备。可选的，基站可以通过广播的方式发送给这些用户设备，基站也可以直接发送给这些用户设备。
进一步，该指示字段的发送可以通过广播信道(Physical Broadcast Channel，简称：PBCH)进行广播，或者通过周期性地在PDCCH上通过公共下行控制单元(common DCI)或者公共PDCCH消息进行周期性发送。
图8是根据本发明实施例提供的基站的结构框图。如图8所示，基站800包括确定单元801和发送单元802。
确定单元801，用于确定在第一时间段内向至少一个用户设备中的P个用户设备发送下行信息。
确定单元801，还用于根据确定的该P个用户设备，生成指示字段，该指示字段包括M个比特，该至少一个用户设备中的每个用户设备分别对应于该M个比特中的K个比特，该K个比特用于指示对应的用户设备是否需要在该第一时间段内接收并读取该基站发送的该下行信息，M为大于1的正整数，K为大于1且小于M的正整数，P为大于或等于0的整数。
发送单元802，用于向该至少一个用户设备发送该指示字段。
图8所示的基站800可以通过指示字段指示用户设备中的每个用户设备该基站是否会在第一时间段内向其发送的下行信息。在用户设备响应从该基站接收到该指示字段时，如果用户设备确定不需要在第一时间段内接收并读取该下行信息，则该用户设备可以不监听和接收相应的信道。这样，可以降低用户设备的功耗，达到节电的目的。
具体地，该至少一个用户设备中可以包括第一类用户设备和/或第二类用户设备。该至少一个用户设备中的P个用户设备可以称为该第一类用户设备。该第一类用户设备，为该至少一个用户设备中，基站确定在第一时间段内向其发送下行信息的一类用户设备。例如，假设在第一时间段内，需要发送的下行信息是寻呼消息，那么根据核心网的信令，基站可以确定在第一时间段内需要被寻呼的用户设备，从而确定这些用户设备为第一类用户设备。又如，假设需要发送的下行信息是普通上行数据或下行数据的调度信息，而该第一时间段是一个调度周期，则基站根据调度算法确定出在第一时间段内被调度的用户设备，作为第一类用户设备；再如，假设第一时间段为上行随机接入资源之后的一段时间，而需要发送的下行信息为用来响应用户设备发 送的随机接入请求报文的随机接入应答报文，则基站根据上行资源的可用情况，选择若干随机接入请求报文对应的用户设备接入并在第一时间段内向这些用户设备反馈随机接入响应报文，基站确定这些用户设备为第一类用户设备。第二类用户设备，为在第一时间段内基站没有向其发送下行信息的用户设备。
具体地，对于连接态的用户设备，基站800是该连接态的用户设备的服务基站。对于空闲态的用户设备，基站800是该空闲态的用户设备的驻留小区所在的基站。
该指示字段在初始状态下，M个比特的值均为否定。确定单元801，可以根据该P个用户设备，将该P个用户设备中的每个用户设备对应的K个比特的值均设置为肯定。
可选的，作为一个实施例，该至少一个用户设备中的每个用户设备对应的K个比特位置是确定单元801预先配置的，并发送单元801可以将配置结果发送给对应的用户设备。
可选的，作为另一个实施例，确定单元801，具体用于确定该P个用户设备中的第i个用户设备的K个预设函数的输入信息，其中，i＝1,…,P；根据该第i个用户设备的K个预设函数的输入信息以及该第i个用户设备的K个预设函数，生成与该第i个用户设备对应的K个数，该K个数用于指示该第i个用户设备对应的K个比特在该M个比特中的位置；将该M个比特中与该K个数相对应的比特位置均设置为肯定。
可选的，作为一个实施例，该K个预设函数为K个预设随机函数，该K个数为K个随机数。这样，由于预设函数为随机函数，因此产生的数是随机数，可以使得不同的用户设备产生对应的数具有随机性，从而可以降低虚警的概率。
可选的，作为另一个实施例，该K个预设函数为K个预设散列函数。
可选的，作为另一个实施例，该K个预设函数为K个哈希函数(Hash Function)或者哈希函数对M取模值。
可选的，作为另一个实施例，该K个预设函数为将每个该预设函数的输入等概率地映射到M个输出值的函数。
可选的，该下行信息的类型为以下中的任一个：寻呼信令、用于应答上行随机接入请求的随机接入响应、用于调度下行用户设备接收下行数据的信 令、用于指示用户设备发送上行数据的信令。
可选的，作为一个实施例，该第i个用户设备的K个预设函数的输入信息可以与该下行信息的类型相对应。也就是说，确定单元801，可以根据该下行信息的类型，确定该第i个用户设备的K个预设函数的输入信息。
具体地，在该下行信息为该寻呼信令情况下，该第i个用户设备的K个预设函数的输入信息包括以下至少一个：该寻呼信令对应的第一类用户设备的标识和系统时间信息。该系统时间信息包括以下中的任一个或多个：系统超帧号、系统帧号和系统子帧号。
具体地，在该下行信息为用于应答上行随机接入请求的随机接入响应的情况下，该第i个用户设备的K个预设函数的输入信息包括以下至少一个：该随机接入请求中的标识信息和系统时间信息。该系统时间信息包括以下中的任一个或多个：系统超帧号、系统帧号和系统子帧号。可选的，该随机接入请求中的标识信息为随机接入请求中包含的随机数或者该随机接入请求对应的接入序列对应的索引值。
具体地，在该下行信息为该用于调度下行用户设备接收下行数据的信令或者该用于指示用户设备发送上行数据的信令的情况下，该第i个用户设备的K个预设函数的输入信息包括以下至少一个：该信令对应的第一类用户设备的标识和系统时间信息。该系统时间信息包括以下中的任一个或多个：系统超帧号、系统帧号和系统子帧号。
可选的，作为另一个实施例，该第i个用户设备的K个预设函数的输入信息可以与该第i个用户设备所处的状态相对应。也就是说，确定单元801，可以根据该第i个用户设备所处的状态，确定该第i个用户设备的K个预设函数的输入信息。
具体地，在该第i个用户设备处于空口空闲态的情况下，该第i个用户设备的K个预设函数的输入信息包括以下至少一种：每个该第一类用户设备的国际移动用户识别码(International Mobile Subscriber Identification Number，IMSI)、每个该第一类用户设备的临时逻辑链路标识(Temporary Logical Link Identifier)；在该第i个用户设备处于空口连接态的情况下，该第i个用户设备的K个预设函数的输入信息包括每个该第一类用户设备的连接态标识。该连接态标识可以是小区无线网络临时标识(Cell Radio Network Temporary Identifier，C-RNTI)。
可选的，作为另一个实施例，确定单元801，还可以根据预先设定，确定该第i个用户设备的K个预设函数的输入信息。
具体地，确定单元801，根据预先设定的规则，确定第i个用户设备的该K个预设函数的输入信息，包括：按照预先设定，将预先规定的用户设备的标识信息(例如，IMSI或者TLLI)作为预设函数的至少一个输入信息；按照预先设定，进一步对于部分或全部K个预设函数，时间信息也可以作为预设函数的输入信息；按照预先设定，进一步对于部分或全部K个预设函数，下行信息的类型的索引编号也可以作为预设函数的输入信息。
进一步，确定单元801还用于确定K的取值和M的取值。发送单元802，还用于将该K的取值和该M的取值发送给该用户设备。
可选的，发送单元802，具体用于在广播信道PBCH和/或物理下行控制信道PDCCH向该用户设备发送该指示字段。
图9是根据本发明实施例提供的用户设备的结构框图。如图9所示，用户设备900包括接收单元901和确定单元902。
接收单元901，用于接收基站发送的长度为M个比特的指示字段。
确定单元902，用于确定该M个比特中对应于该用户设备的K个比特的位置，M为大于1的正整数，K为大于1的正整数。
确定单元902，还用于根据该K个比特的值，确定在第一时间段是否接收并读取该基站发送的下行信息。
图9所示的用户设备900可以根据指示字段确定自身是否在第一时间段内需要接收并读取该基站发送的下行信息。若该用户设备确定需要接收并读取该基站发送的该下行信息，则在第一时间段内监听相应的信道。若该用户设备确定不需要接收并读取该基站发送的该下行信息，则可以在第一时间段内不监听相应的信道。同时，由于使用多个比特位置指示一个用户设备是否需要在第一时间段内接收并读取调度控制信息以及相应的数据信道，这样可以减少不必要的虚警。
具体地，确定单元902，具体确定K个预设函数的输入信息；根据该K个预设函数的输入信息以及该K个预设函数，生成与该用户设备对应的K个数，该K个数用于指示该用户设备对应的K个比特在该M个比特中的位置；确定在该M个比特中与该K个数对应的K个比特位置。
可选的，该K个预设函数为K个预设随机函数，该K个数为K个随机 数。
可选的，作为另一个实施例，该K个预设函数为K个预设散列函数。
可选的，作为另一个实施例，该K个预设函数为K个哈希函数(Hash Function)或者哈希函数对M取模值。
可选的，作为另一个实施例，该K个预设函数为将每个该预设函数的输入等概率地映射到M个输出值的函数。
具体地，确定单元902，具体用于确定该K个比特的值是否均为肯定，若确定该K个比特的值均为肯定，则确定该第一时间段内接收并读取该基站发送的该下行信息，若确定该K个比特的值中存在至少一位为否定，则确定在该第一时间段内不接收并读取该基站发送的该下行信息。
可选的，该第一时间段该基站发送的该下行信息为以下任一种：寻呼信令、用于应答上行随机接入请求的随机接入响应、用于调度下行用户设备接收下行数据的信令、用于指示用户设备发送上行数据的信令。
可选的，作为一个实施例，该K个预设函数的输入信息与该下行信息的类型相对应。也就是说，确定单元902，可以根据该下行信息的类型，确定该K个预设函数的输入信息。
具体地，在该下行信息为该寻呼信令情况下，该第i个用户设备的K个预设函数的输入信息包括以下至少一个：该寻呼信令对应的用户设备的标识和系统时间信息。该系统时间信息包括以下中的任一个或多个：系统超帧号、系统帧号和系统子帧号。每个用户设备的标识可以是不同的，因此可以保证基于该K个预设函数输出的K个数都相同的概率较低。特别的，对于一些函数(例如哈希函数)，如果输入不同，输出会有很大概率不同。因此更能保证针对不同的用户设备输出的K个数都相同的概率较低，进而避免虚警的发生。
具体地，在该下行信息为用于应答上行随机接入请求的随机接入响应的情况下，该第i个用户设备的K个预设函数的输入信息包括以下至少一个：该随机接入请求中的标识信息和系统时间信息。该系统时间信息包括以下中的任一个或多个：系统超帧号、系统帧号和系统子帧号。可选的，该随机接入请求中的标识信息为随机接入请求中包含的随机数或者该随机接入请求对应的接入序列对应的索引值。该随机接入请求中的标识信息，根据基站和用户设备的约定，为随机接入请求中包含的随机数或者该随机接入请求对应 的接入序列对应的索引值。每个第一类用户设备的随机接入请求中的标识信息可以是不同的，因此基于K个预设函数输出的K个数都相同的概率较低。特别的，对于一些函数(例如哈希函数)，如果输入不同，输出会有很大概率不同。因此更能保证针对不同的用户设备输出的K个数都相同的概率较低，进而避免虚警的发生。
具体地，在该下行信息为该用于调度下行用户设备接收下行数据的信令或者该用于指示用户设备发送上行数据的信令的情况下，该第i个用户设备的K个预设函数的输入信息包括以下至少一个：该信令对应的用户设备的标识和系统时间信息。该系统时间信息包括以下中的任一个或多个：系统超帧号、系统帧号和系统子帧号。每个第一类用户设备的标识是不同的，因此基于该K个预设函数输出的K个数都相同的概率较低。特别的，对于一些函数(例如哈希函数)，如果输入不同，输出会有很大概率不同。因此更能保证针对不同的用户设备输出的K个数都相同的概率较低，进而避免虚警的发生。
可选的，作为另一个实施例，该K个预设函数的输入信息与该用户设备所处的状态相对应。也就是说，确定单元902，可以根据该用户设备所处的状态，确定该K个预设函数的输入信息。
具体地，在该用户设备处于空口空闲态的情况下，该K个预设函数的输入信息包括以下至少一个：该用户设备的国际移动用户识别码、该用户设备的临时逻辑链路标识；在定该用户设备处于空口连接态的情况下，该K个预设函数的输入信息为该用户设备的连接态标识。
可选的，作为另一个实施例，确定单元902，可以根据预先设定，确定该K个预设函数的输入信息。
可选的，接收单元901，还用于接收该基站发送的K的取值和M的取值。
图10是根据本发明实施例提供的基站的结构框图。如图10所示，基站1000包括：处理器1001、存储器1002和收发电路1003。
基站1000中的各个组件通过总线系统1004耦合在一起，其中总线系统1004除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图10中将各种总线都标为总线系统1004。
上述本发明实施例揭示的方法可以应用于处理器1001中，或者由处理 器1001实现。处理器1001可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器1001中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器1001可以是通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本发明实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存取存储器(Random Access Memory，RAM)、闪存、只读存储器(Read-Only Memory，ROM)、可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器1002，处理器1001读取存储器1002中的指令，结合其硬件完成上述方法的步骤。
处理器1001，用于确定在第一时间段内向至少一个用户设备中的P个用户设备发送下行信息。
处理器1001，还用于根据确定的该P个用户设备，生成指示字段，该指示字段包括M个比特，该至少一个用户设备中的每个用户设备分别对应于该M个比特中的K个比特，该K个比特用于指示对应的用户设备是否需要在该第一时间段内接收并读取该基站发送的该下行信息，M为大于1的正整数，K为大于1且小于M的正整数，P为大于或等于0的整数。
收发电路1003，用于向该至少一个用户设备发送该指示字段。
图10所示的基站1000可以通过指示字段指示用户设备中的每个用户设备该基站是否会在第一时间段内向其发送的下行信息。在用户设备响应从该基站接收到该指示字段时，如果用户设备确定不需要在第一时间段内接收并读取该下行信息，则该用户设备可以不监听和接收相应的信道。这样，可以降低用户设备的功耗，达到节电的目的。
具体地，该至少一个用户设备中可以包括第一类用户设备和/或第二类用户设备。该至少一个用户设备中的P个用户设备可以称为该第一类用户设备。该第一类用户设备，为该至少一个用户设备中，基站确定在第一时间段 内向其发送下行信息的一类用户设备。例如，假设在第一时间段内，需要发送的下行信息是寻呼消息，那么根据核心网的信令，基站可以确定在第一时间段内需要被寻呼的用户设备，从而确定这些用户设备为第一类用户设备。又如，假设需要发送的下行信息是普通上行数据或下行数据的调度信息，而该第一时间段是一个调度周期，则基站根据调度算法确定出在第一时间段内被调度的用户设备，作为第一类用户设备；再如，假设第一时间段为上行随机接入资源之后的一段时间，而需要发送的下行信息为用来响应用户设备发送的随机接入请求报文的随机接入应答报文，则基站根据上行资源的可用情况，选择若干随机接入请求报文对应的用户设备接入并在第一时间段内向这些用户设备反馈随机接入响应报文，基站确定这些用户设备为第一类用户设备。第二类用户设备，为在第一时间段内基站没有向其发送下行信息的用户设备。
具体地，对于连接态的用户设备，基站800是该连接态的用户设备的服务基站。对于空闲态的用户设备，基站800是该空闲态的用户设备的驻留小区所在的基站。
该指示字段在初始状态下，M个比特的值均为否定。处理器1001，可以根据该P个用户设备，将该P个用户设备中的每个用户设备对应的K个比特的值均设置为肯定。
可选的，作为一个实施例，该至少一个用户设备中的每个用户设备对应的K个比特位置是处理器1001预先配置的，并发送单元801可以将配置结果发送给对应的用户设备。
可选的，作为另一个实施例，处理器1001，具体用于确定该P个用户设备中的第i个用户设备的K个预设函数的输入信息，其中，i＝1,…,P；根据该第i个用户设备的K个预设函数的输入信息以及该第i个用户设备的K个预设函数，生成与该第i个用户设备对应的K个数，该K个数用于指示该第i个用户设备对应的K个比特在该M个比特中的位置；将该M个比特中与该K个数相对应的比特位置均设置为肯定。
可选的，作为一个实施例，该K个预设函数为K个预设随机函数，该K个数为K个随机数。这样，由于预设函数为随机函数，因此产生的数是随机数，可以使得不同的用户设备产生对应的数具有随机性，从而可以降低虚警的概率。
可选的，作为另一个实施例，该K个预设函数为K个预设散列函数。
可选的，作为另一个实施例，该K个预设函数为K个哈希函数(Hash Function)或者哈希函数对M取模值。
可选的，作为另一个实施例，该K个预设函数为将每个该预设函数的输入等概率地映射到M个输出值的函数。
可选的，该下行信息的类型为以下中的任一个：寻呼信令、用于应答上行随机接入请求的随机接入响应、用于调度下行用户设备接收下行数据的信令、用于指示用户设备发送上行数据的信令。
可选的，作为一个实施例，该第i个用户设备的K个预设函数的输入信息可以与该下行信息的类型相对应。也就是说，处理器1001，可以根据该下行信息的类型，确定该第i个用户设备的K个预设函数的输入信息。
具体地，在该下行信息为该寻呼信令情况下，该第i个用户设备的K个预设函数的输入信息包括以下至少一个：该寻呼信令对应的第一类用户设备的标识和系统时间信息。该系统时间信息包括以下中的任一个或多个：系统超帧号、系统帧号和系统子帧号。
具体地，在该下行信息为用于应答上行随机接入请求的随机接入响应的情况下，该第i个用户设备的K个预设函数的输入信息包括以下至少一个：该随机接入请求中的标识信息和系统时间信息。该系统时间信息包括以下中的任一个或多个：系统超帧号、系统帧号和系统子帧号。可选的，该随机接入请求中的标识信息为随机接入请求中包含的随机数或者该随机接入请求对应的接入序列对应的索引值。
具体地，在该下行信息为该用于调度下行用户设备接收下行数据的信令或者该用于指示用户设备发送上行数据的信令的情况下，该第i个用户设备的K个预设函数的输入信息包括以下至少一个：该信令对应的第一类用户设备的标识和系统时间信息。该系统时间信息包括以下中的任一个或多个：系统超帧号、系统帧号和系统子帧号。
可选的，作为另一个实施例，该第i个用户设备的K个预设函数的输入信息可以与该第i个用户设备所处的状态相对应。也就是说，处理器1001，可以根据该第i个用户设备所处的状态，确定该第i个用户设备的K个预设函数的输入信息。
具体地，在该第i个用户设备处于空口空闲态的情况下，该第i个用户 设备的K个预设函数的输入信息包括以下至少一种：每个该第一类用户设备的国际移动用户识别码(International Mobile Subscriber Identification Number，IMSI)、每个该第一类用户设备的临时逻辑链路标识(Temporary Logical Link Identifier)；在该第i个用户设备处于空口连接态的情况下，该第i个用户设备的K个预设函数的输入信息包括每个该第一类用户设备的连接态标识。该连接态标识可以是小区无线网络临时标识(Cell Radio Network Temporary Identifier，C-RNTI)。
可选的，作为另一个实施例，处理器1001，还可以根据预先设定，确定该第i个用户设备的K个预设函数的输入信息。
具体地，处理器1001，根据预先设定的规则，确定第i个用户设备的该K个预设函数的输入信息，包括：按照预先设定，将预先规定的用户设备的标识信息(例如，IMSI或者TLLI)作为预设函数的至少一个输入信息；按照预先设定，进一步对于部分或全部K个预设函数，时间信息也可以作为预设函数的输入信息；按照预先设定，进一步对于部分或全部K个预设函数，下行信息的类型的索引编号也可以作为预设函数的输入信息。
进一步，处理器1001还用于确定K的取值和M的取值。收发电路1003，还用于将该K的取值和该M的取值发送给该用户设备。
可选的，收发电路1003，具体用于在广播信道PBCH和/或物理下行控制信道PDCCH向该用户设备发送该指示字段。
图11是根据本发明实施例提供的用户设备的结构框图。如图11所示，用户设备1100包括：处理器1101、存储器1102和收发电路1103。
用户设备1100中的各个组件通过总线系统1104耦合在一起，其中总线系统1104除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图11中将各种总线都标为总线系统1104。
上述本发明实施例揭示的方法可以应用于处理器1101中，或者由处理器1101实现。处理器1101可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器1101中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器1101可以是通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、 分立硬件组件。可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本发明实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存取存储器(Random Access Memory，RAM)、闪存、只读存储器(Read-Only Memory，ROM)、可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器1102，处理器1101读取存储器1102中的指令，结合其硬件完成上述方法的步骤。
收发电路1103，用于接收基站发送的长度为M个比特的指示字段。
处理器1101，用于确定该M个比特中对应于该用户设备的K个比特的位置，M为大于1的正整数，K为大于1的正整数。
处理器1101，还用于根据该K个比特的值，确定在第一时间段是否接收并读取该基站发送的下行信息。
图11所示的用户设备1100可以根据指示字段确定自身是否在第一时间段内需要接收并读取该基站发送的下行信息。若该用户设备确定需要接收并读取该基站发送的该下行信息，则在第一时间段内监听相应的信道。若该用户设备确定不需要接收并读取该基站发送的该下行信息，则可以在第一时间段内不监听相应的信道。同时，由于使用多个比特位置指示一个用户设备是否需要在第一时间段内接收并读取调度控制信息以及相应的数据信道，这样可以减少不必要的虚警。
具体地，处理器1101，具体确定K个预设函数的输入信息；根据该K个预设函数的输入信息以及该K个预设函数，生成与该用户设备对应的K个数，该K个数用于指示该用户设备对应的K个比特在该M个比特中的位置；确定在该M个比特中与该K个数对应的K个比特位置。
可选的，该K个预设函数为K个预设随机函数，该K个数为K个随机数。
可选的，作为另一个实施例，该K个预设函数为K个预设散列函数。
可选的，作为另一个实施例，该K个预设函数为K个哈希函数(Hash Function)或者哈希函数对M取模值。
可选的，作为另一个实施例，该K个预设函数为将每个该预设函数的输 入等概率地映射到M个输出值的函数。
具体地，处理器1101，具体用于确定该K个比特的值是否均为肯定，若确定该K个比特的值均为肯定，则确定该第一时间段内接收并读取该基站发送的该下行信息，若确定该K个比特的值中存在至少一位为否定，则确定在该第一时间段内不接收并读取该基站发送的该下行信息。
可选的，该第一时间段该基站发送的该下行信息为以下任一种：寻呼信令、用于应答上行随机接入请求的随机接入响应、用于调度下行用户设备接收下行数据的信令、用于指示用户设备发送上行数据的信令。
可选的，作为一个实施例，该K个预设函数的输入信息与该下行信息的类型相对应。也就是说，处理器1101，可以根据该下行信息的类型，确定该K个预设函数的输入信息。
具体地，在该下行信息为该寻呼信令情况下，该第i个用户设备的K个预设函数的输入信息包括以下至少一个：该寻呼信令对应的用户设备的标识和系统时间信息。该系统时间信息包括以下中的任一个或多个：系统超帧号、系统帧号和系统子帧号。每个用户设备的标识可以是不同的，因此可以保证基于该K个预设函数输出的K个数都相同的概率较低。特别的，对于一些函数(例如哈希函数)，如果输入不同，输出会有很大概率不同。因此更能保证针对不同的用户设备输出的K个数都相同的概率较低，进而避免虚警的发生。
具体地，在该下行信息为用于应答上行随机接入请求的随机接入响应的情况下，该第i个用户设备的K个预设函数的输入信息包括以下至少一个：该随机接入请求中的标识信息和系统时间信息。该系统时间信息包括以下中的任一个或多个：系统超帧号、系统帧号和系统子帧号。可选的，该随机接入请求中的标识信息为随机接入请求中包含的随机数或者该随机接入请求对应的接入序列对应的索引值。该随机接入请求中的标识信息，根据基站和用户设备的约定，为随机接入请求中包含的随机数或者该随机接入请求对应的接入序列对应的索引值。每个第一类用户设备的随机接入请求中的标识信息可以是不同的，因此基于K个预设函数输出的K个数都相同的概率较低。特别的，对于一些函数(例如哈希函数)，如果输入不同，输出会有很大概率不同。因此更能保证针对不同的用户设备输出的K个数都相同的概率较低，进而避免虚警的发生。
具体地，在该下行信息为该用于调度下行用户设备接收下行数据的信令或者该用于指示用户设备发送上行数据的信令的情况下，该第i个用户设备的K个预设函数的输入信息包括以下至少一个：该信令对应的用户设备的标识和系统时间信息。该系统时间信息包括以下中的任一个或多个：系统超帧号、系统帧号和系统子帧号。每个第一类用户设备的标识是不同的，因此基于该K个预设函数输出的K个数都相同的概率较低。特别的，对于一些函数(例如哈希函数)，如果输入不同，输出会有很大概率不同。因此更能保证针对不同的用户设备输出的K个数都相同的概率较低，进而避免虚警的发生。
可选的，作为另一个实施例，该K个预设函数的输入信息与该用户设备所处的状态相对应。也就是说，处理器1101，可以根据该用户设备所处的状态，确定该K个预设函数的输入信息。
具体地，在该用户设备处于空口空闲态的情况下，该K个预设函数的输入信息包括以下至少一个：该用户设备的国际移动用户识别码、该用户设备的临时逻辑链路标识；在定该用户设备处于空口连接态的情况下，该K个预设函数的输入信息为该用户设备的连接态标识。
可选的，作为另一个实施例，处理器1101，可以根据预先设定，确定该K个预设函数的输入信息。
可选的，收发电路1103，还用于接收该基站发送的K的取值和M的取值。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可 以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内，因此本发明的保护范围应以权利要求的保护范围为准。

Claims (40)

  1. 一种传输信息的方法，其特征在于，所述方法包括：
    基站确定在第一时间段内向至少一个用户设备中的P个用户设备发送下行信息；
    所述基站根据确定的所述P个用户设备，生成指示字段，所述指示字段包括M个比特，所述至少一个用户设备中的每个用户设备分别对应于所述M个比特中的K个比特，所述K个比特用于指示对应的用户设备是否需要在所述第一时间段内接收并读取所述基站发送的所述下行信息，M为大于1的正整数，K为大于1且小于M的正整数，P为大于或等于0的整数；
    所述基站向所述至少一个用户设备发送所述指示字段。
  2. 如权利要求1所述的方法，其特征在于，在P为大于0的整数的情况下，所述基站根据确定的所述P个用户设备，生成指示字段，包括：
    所述基站确定所述P个用户设备中的第i个用户设备的K个预设函数的输入信息，其中，i＝1,…,P；
    根据所述第i个用户设备的K个预设函数的输入信息以及所述第i个用户设备的K个预设函数，生成与所述第i个用户设备对应的K个数，所述K个数用于指示所述第i个用户设备对应的K个比特在所述M个比特中的位置；
    将所述M个比特中与所述K个数相对应的比特位置均设置为肯定。
  3. 如权利要求2所述的方法，其特征在于，所述K个预设函数为K个预设随机函数；所述K个数为K个随机数；或者
    所述K个预设函数为K个预设散列函数。
  4. 如权利要求2或3所述的方法，其特征在于，所述下行信息的类型为以下中的任一个：寻呼信令、用于应答上行随机接入请求的随机接入响应、用于调度下行用户设备接收下行数据的信令、用于指示用户设备发送上行数据的信令。
  5. 如权利要求4所述的方法，其特征在于，在所述下行信息为所述寻 呼信令的情况下，所述第i个用户设备的K个预设函数的输入信息包括以下至少一个：所述寻呼信令对应的用户设备的标识和系统时间信息。
  6. 如权利要求4所述的方法，其特征在于，在所述下行信息为所述用于应答上行随机接入请求的随机接入响应的情况下，所述第i个用户设备的K个预设函数的输入信息包括以下至少一个：所述随机接入请求中的标识信息和系统时间信息。
  7. 如权利要求4所述的方法，其特征在于，在所述下行信息为所述用于调度所述第i个用户设备接收下行数据的信令或所述用于指示所述第i个用户设备发送上行数据的信令的情况下，所述第i个用户设备的K个预设函数的输入信息包括以下至少一个：所述信令对应的用户设备的标识和系统时间信息。
  8. 如权利要求2或3所述的方法，其特征在于，在所述第i个用户设备处于空口空闲态的情况下，所述第i个用户设备的K个预设函数的输入信息包括以下至少一种：所述第i个用户设备的国际移动用户识别码、所述第i个用户设备的临时逻辑链路标识；
    在所述第i个用户设备处于空口连接态的情况下，所述第i个用户设备的K个预设函数的输入信息至少包括所述第i个用户设备的连接态标识。
  9. 如权利要求2至8中任一项所述的方法，其特征在于，在所述基站根据所述第i个用户设备的K个预设函数的输入信息以及所述第i个用户设备的K个预设函数，生成与所述第i个用户设备对应的K个数之前，所述方法还包括：
    所述基站确定K的取值以及M的取值，并将K和M的取值发送给所述至少一个用户设备。
  10. 如权利要求1至9中任一项所述的方法，其特征在于，所述基站在广播信道PBCH和/或物理下行控制信道PDCCH向所述用户设备发送所述指示字段。
  11. 一种传输信息方法，其特征在于，所述方法包括：
    用户设备接收基站发送的长度为M个比特的指示字段；
    所述用户设备确定所述M个比特中对应于所述用户设备的K个比特的位置，M为大于1的正整数，K为大于1且小于M的正整数的正整数；
    所述用户设备根据所述K个比特的值，确定在第一时间段是否接收并读取所述基站发送的下行信息。
  12. 如权利要求11所述的方法，其特征在于，所述用户设备确定所述M个比特中对应于所述用户设备的K个比特的位置，包括：
    所述用户设备确定K个预设函数的输入信息；
    根据所述K个预设函数的输入信息以及所述K个预设函数，生成与所述用户设备对应的K个数，所述K个数用于指示所述用户设备对应的K个比特在所述M个比特中的位置；
    确定在所述M个比特中与所述K个数对应的K个比特的位置。
  13. 如权利要求12所述的方法，其特征在于，所述K个预设函数为K个预设随机函数，所述K个数为K个随机数；或者
    所述K个预设函数K个预设散列函数。
  14. 如权利要求11至13中任一项所述的方法，其特征在于，所述用户设备根据所述K个比特的值，确定在第一时间段是否接收并读取所述基站发送的下行信息，包括：
    若所述用户设备确定所述K个比特的值均为肯定，则确定在所述第一时间段内接收并读取所述基站发送的所述下行信息；
    若所述用户设备确定所述K个比特的值中存在至少一位为否定，则确定在所述第一时间段内不接收并读取所述基站发送的所述下行信息。
  15. 如权利要求12至14中任一项所述的方法，其特征在于，所述下行信息的类型为以下任一种：寻呼信令、用于应答上行随机接入请求的随机接入响应、用于调度下行用户设备接收下行数据的信令、用于指示用户设备发 送上行数据的信令。
  16. 如权利要求15所述的方法，其特征在于，在所述下行信息为所述寻呼信令的情况下，所述K个预设函数的输入信息包括以下至少一个：所述用户设备的标识和系统时间信息。
  17. 如权利要求15所述的方法，其特征在于，在所述下行信息为所述用于应答上行随机接入请求的随机接入响应的情况下，所述K个预设函数的输入信息包括以下至少一个：随机接入请求中的标识信息和系统时间信息。
  18. 如权利要求15所述的方法，其特征在于，在所述下行信息为用于调度下行用户设备接收下行数据的信令或所述用于指示用户设备发送上行数据的信令的情况下，所述K个预设函数的输入信息包括以下至少一个：所述用户设备的标识和系统时间信息。
  19. 如权利要求12至14任一项所述的方法，其特征在于，在所述用户设备处于空口空闲态的情况下，所述K个预设函数的输入信息包括以下至少一个：所述用户设备的国际移动用户识别码、所述用户设备的临时逻辑链路标识；
    在所述用户设备处于空口连接态的情况下，所述K个预设函数的输入为所述用户设备的连接态标识。
  20. 如权利要求11至19中任一项所述的方法，其特征在于，在所述根据所述K个预设函数的输入信息以及所述K个预设函数，生成与所述用户设备对应的K个数之前，所述方法还包括：
    所述用户设备接收所述基站发送的K的取值和M的取值。
  21. 一种基站，其特征在于，所述基站包括：
    确定单元，用于确定在第一时间段内向至少一个用户设备中的P个用户设备发送下行信息；
    所述确定单元，还用于根据确定的所述P个用户设备，生成指示字段， 所述指示字段包括M个比特，所述至少一个用户设备中的每个用户设备分别对应于所述M个比特中的K个比特，所述K个比特用于指示对应的用户设备是否需要在所述第一时间段内接收并读取所述基站发送的所述下行信息，M为大于1的正整数，K为大于1且小于M的正整数，P为大于或等于0的整数；
    发送单元，用于向所述至少一个用户设备发送所述指示字段。
  22. 如权利要求21所述的基站，其特征在于，所述确定单元，具体用于确定所述P个用户设备中的第i个用户设备的K个预设函数的输入信息，其中，i＝1,…,P；根据所述第i个用户设备的K个预设函数的输入信息以及所述第i个用户设备的K个预设函数，生成与所述第i个用户设备对应的K个数，所述K个数用于指示所述第i个用户设备对应的K个比特在所述M个比特中的位置；将所述M个比特中与所述K个数相对应的比特位置均设置为肯定
  23. 如权利要求22所述的基站，其特征在于，所述K个预设函数为K个预设随机函数；所述K个数为K个随机数；或者
    所述K个预设函数为K个预设散列函数。
  24. 如权利要求22或23所述的基站，其特征在于，所述下行信息的类型为以下中的任一个：寻呼信令、用于应答上行随机接入请求的随机接入响应、用于调度下行用户设备接收下行数据的信令、用于指示用户设备发送上行数据的信令。
  25. 如权利要求24所述的基站，其特征在于，在所述下行信息为所述寻呼信令的情况下，所述第i个用户设备的K个预设函数的输入信息包括以下至少一个：所述寻呼信令对应的用户设备的标识和系统时间信息。
  26. 如权利要求24所述的基站，其特征在于，在所述下行信息为所述用于应答上行随机接入请求的随机接入响应的情况下，所述第i个用户设备的K个预设函数的输入信息包括以下至少一个：所述随机接入请求中的标识 信息和系统时间信息。
  27. 如权利要求24所述的基站，其特征在于，在所述下行信息为所述用于调度所述用户设备接收下行数据的信令或所述用于指示所述用户设备发送上行数据的信令的情况下，所述第i个用户设备的K个预设函数的输入信息包括以下至少一个：所述信令对应的用户设备的标识和系统时间信息。
  28. 如权利要求22或23所述的基站，其特征在于，在所述第i个用户设备处于空口空闲态的情况下，所述第i个用户设备的K个预设函数的输入信息包括以下至少一种：所述第i个用户设备的国际移动用户识别码、所述第i个用户设备的临时逻辑链路标识；
    在所述第i个用户设备处于空口连接态的情况下，所述第i个用户设备的K个预设函数的输入信息至少包括所述第i个用户设备的连接态标识。
  29. 如权利要求21至28中任一项所述的基站，其特征在于，所述确定单元还用于确定K的取值和M的取值；
    所述发送单元，还用于将所述K的取值和所述M的取值发送给所述至少一个用户设备。
  30. 如权利要求21至29中任一项所述的基站，其特征在于，所述发送单元，具体用于在广播信道PBCH和/或物理下行控制信道PDCCH向所述用户设备发送所述指示字段。
  31. 一种用户设备，其特征在于，所述用户设备包括：
    接收单元，用于接收基站发送的长度为M个比特的指示字段；
    确定单元，用于确定所述M个比特中对应于所述用户设备的K个比特的位置，M为大于1的正整数，K为大于1且小于M的正整数的正整数；
    所述确定单元，还用于根据所述K个比特的值，确定在第一时间段是否接收并读取所述基站发送的下行信息。
  32. 如权利要求31所述的用户设备，其特征在于，所述确定单元，具 体用于确定K个预设函数的输入信息；
    根据所述K个预设函数的输入信息以及所述K个预设函数，生成与所述用户设备对应的K个数，所述K个数用于指示所述用户设备对应的K个比特在所述M个比特中的位置；
    确定在所述M个比特中与所述K个数对应的K个比特位置。
  33. 如权利要求32所述的用户设备，其特征在于，所述K个预设函数为K个预设随机函数，所述K个数为K个随机数；或者
    所述K个预设函数K个预设散列函数。
  34. 如权利要求31至33中任一项所述的用户设备，其特征在于，所述确定单元，具体用于确定所述K个比特的值是否均为肯定，若确定所述K个比特的值均为肯定，则确定所述第一时间段内接收并读取所述基站发送的所述下行信息，若确定所述K个比特的值中存在至少一位为否定，则确定在所述第一时间段内不接收并读取所述基站发送的所述下行信息。
  35. 如权利要求32至34中任一项所述的用户设备，其特征在于，所述下行信息的类型为以下任一种：寻呼信令、用于应答上行随机接入请求的随机接入响应、用于调度下行用户设备接收下行数据的信令、用于指示用户设备发送上行数据的信令。
  36. 如权利要求35所述的用户设备，其特征在于，在所述下行信息为所述寻呼信令的情况下，所述K个预设函数的输入信息包括以下至少一个：所述用户设备的标识和系统时间信息。
  37. 如权利要求35所述的用户设备，其特征在于，在所述下行信息为所述用于应答上行随机接入请求的随机接入响应的情况下，所述K个预设函数的输入信息包括以下至少一个：随机接入请求中的标识信息和系统时间信息。
  38. 如权利要求35所述的用户设备，其特征在于，在所述下行信息为 用于调度下行用户设备接收下行数据的信令或所述用于指示用户设备发送上行数据的信令的情况下，所述K个预设函数的输入信息包括以下至少一个：所述用户设备的标识和系统时间信息。
  39. 如权利要求32至34任一项所述的用户设备，其特征在于，在所述用户设备处于空口空闲态的情况下，所述K个预设函数的输入信息包括以下至少一个：所述用户设备的国际移动用户识别码、所述用户设备的临时逻辑链路标识；
    在所述用户设备处于空口连接态的情况下，所述K个预设函数的输入为所述用户设备的连接态标识。
  40. 如权利要求31至39中任一项所述的用户设备，其特征在于，所述接收单元，还用于接收所述基站发送的K的取值和M的取值。
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