WO2016149940A1 - 一种消息变更处理的方法、装置及系统 - Google Patents

一种消息变更处理的方法、装置及系统 Download PDF

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Publication number
WO2016149940A1
WO2016149940A1 PCT/CN2015/075131 CN2015075131W WO2016149940A1 WO 2016149940 A1 WO2016149940 A1 WO 2016149940A1 CN 2015075131 W CN2015075131 W CN 2015075131W WO 2016149940 A1 WO2016149940 A1 WO 2016149940A1
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Prior art keywords
user equipment
paging
pich
radio frame
paging occasion
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PCT/CN2015/075131
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English (en)
French (fr)
Inventor
舒兵
庞伶俐
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.)
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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 CN201580024807.1A priority Critical patent/CN106465330A/zh
Priority to PCT/CN2015/075131 priority patent/WO2016149940A1/zh
Publication of WO2016149940A1 publication Critical patent/WO2016149940A1/zh

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    • 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

Definitions

  • the present invention relates to the field of communications, and in particular, to a method, device, and system for message change processing.
  • the network side and the terminal side are connected through an air interface.
  • the terminal can be instructed by paging, for example, the system message is changed or the terminal is called, and the terminal obtains the network side notification in time by periodically listening to the paging.
  • the basic process of paging is related to two channels, namely, Paging Indication Channel (PICH) and Paging Control Channel (PCCH), that is, user equipment (UE, User Equipment) obtains information from PICH.
  • PICH Paging Indication Channel
  • PCCH Paging Control Channel
  • the PCCH channel or the BCCH channel needs to be heard according to the self state and configuration, the PCCH channel can be mapped to the secondary common control physical channel (SCCPCH, Secondary Common Control Physical Channel), and the BCCH can be mapped to the forward access channel (FACH).
  • SCCPCH Secondary Common Control Physical Channel
  • FACH forward access channel
  • the user equipment selects according to its own state and configuration.
  • HS-DSCH High Speed Downlink Shared Channel
  • the network informs the idle state, the cell paging channel (Cell_PCH, Cell Paging Channel) state, the URA_PCH, UTRAN Registration Area Paging Channel state, and the cell front.
  • All user equipments in the state of the access channel (CELL_FACH, Forward Access Channel) need to send a paging indication (PI, Paging Indication) on all paging occasions of the DRX (discontinuous reception) period, and Set all PIs to 1 to ensure that all user devices receive subsequent messages during a DRX cycle.
  • PI paging indication
  • the user equipment When the user equipment obtains the PI set to 1, it receives a notification message paging type 1 (PAGING TYPE 1) or a system information change indication (SYSTEM INFORMATION CHANGE INDICATION) according to the information element included in the received notification message. (IE, Information Element)
  • IE Information Element
  • the content of the "BCCH modification info" (Broadcast Control Channel modification information) determines whether or not to read the system message.
  • each user equipment will read the PI indication once in each DRX cycle, if PI When the value is 1, it needs to receive the corresponding notification message, and these actions will cause the battery of the user equipment to be consumed.
  • the network side repeatedly sends a change notification to the user equipment during the entire DRX cycle.
  • the system change information has all been notified in the first DRX cycle. The user equipment, so the PI will not be sent in the subsequent second DRX cycle, and the user equipment will not receive the corresponding notification message.
  • a long DRX cycle is introduced for a certain type of first user equipment (longer than the DRX cycle of the second user equipment, and the DRX cycle of the second user equipment is called a short DRX cycle)
  • all the first user equipments are received.
  • the system change information needs to send a PI indication set to 1 in the entire long DRX cycle. Since the PI indication is limited, the second user equipment and the new user equipment share the PI information, so the second user equipment will again in the subsequent short cycle.
  • the embodiment of the invention provides a message change processing method, which can prevent the user equipment from reading the notification message of the system message change multiple times in the long DRX cycle, so that the user equipment saves its own power and improves the user experience.
  • a first aspect of the present invention provides a method for message change processing, including:
  • the bit of the paging indicator PI of the first user equipment is at least one of the spare bits in the PICH radio frame corresponding to the paging occasion corresponding to the paging occasion, or determining that the paging indicator PI of the first user equipment is a predefined PI, wherein the predefined PI bit is located in a paging indicator channel PICH radio frame corresponding to the paging occasion, and the predefined PI is indicated by the network side or the network side and the user equipment An agreed indication of a system broadcast message change;
  • the PI is transmitted at the paging occasion.
  • the spare bit is the last 12 bits of the PICH radio frame.
  • the predefined PI bit is at least one of the first 288 bits in the PICH radio frame.
  • the determining a paging occasion of the first user equipment includes:
  • the determining a paging occasion of the first user equipment includes:
  • Paging Occasion indicates the paging occasion
  • IMSI is the international mobile subscriber identity code
  • mod indicates the modulo operation
  • div indicates the division operation
  • PBP is the paging block period
  • Frame Offset is the frame offset
  • DRX cycle length1 is the DRX length used by the first user equipment, that is, the length of the first DRX cycle
  • DRX cycle length2 is the DRX length used by the second user equipment. The length of the two DRX cycles, and the DRX cycle length2 is less than the DRX cycle length1.
  • any one of the first to the fourth possible implementation manners of the first aspect in a fifth possible implementation manner, is located At least one of the spare bits in the paging indicator channel PICH radio frame corresponding to the paging occasion, including:
  • the method further includes:
  • the number of spare bits of the PI of the first user equipment in the PICH radio frame is calculated according to the following alternate bit formula:
  • V pi is a value calculated according to the identification number of the first user equipment and Np
  • SFN is the system frame number
  • Np represents the number of PIs in each PICH radio frame
  • Np' represents the number of PIs transmitted by the first user equipment through the spare bits.
  • any one of the first to the sixth possible implementation manners of the first aspect in a seventh possible implementation, the method further includes:
  • the associated channel of the PICH of the PI of the first user equipment includes:
  • S-CCPCH Auxiliary common control physical channel S-CCPCH, said S-CCPCH associated with said PICH, or
  • High speed shared control channel HS-SCCH the HS-SCCH is associated with the PICH, or
  • a high speed physical downlink shared channel HS-PDSCH the HS-PDSCH being associated with the PICH.
  • a second aspect of the present invention provides a method for message change processing, including:
  • the spare bit is the last 12 bits in the PICH radio frame.
  • the predefined PI bit is at least one of the first 288 bits in the PICH radio frame.
  • the determining the first user equipment Call timing including:
  • the determining a paging occasion of the first user equipment includes:
  • Paging Occasion indicates the paging occasion
  • IMSI is the international mobile subscriber identity code
  • mod indicates the modulo operation
  • div indicates the division operation
  • PBP is the paging block period
  • Frame Offset is the frame offset
  • DRX cycle length1 is the DRX length used by the first user equipment, that is, the length of the first DRX cycle
  • DRX cycle length2 is the DRX length used by the second user equipment. The length of the two DRX cycles, and the DRX cycle length2 is less than the DRX cycle length1.
  • any one of the first to fourth possible implementation manners of the second aspect in a fifth possible implementation, the parsing at least one of the spare bits in the PICH radio frame, including :
  • the method further includes:
  • V PI is calculated according to the identification number of the first user equipment and the value of Np
  • SFN represents the system frame number
  • Np represents the number of PIs in each PICH radio frame
  • Np' represents the number of PIs transmitted by the first user equipment through the spare bits.
  • the method further includes:
  • the associated channel of the PICH includes:
  • S-CCPCH Auxiliary common control physical channel S-CCPCH, said S-CCPCH associated with said PICH, or
  • High speed shared control channel HS-SCCH the HS-SCCH is associated with the PICH, or
  • a high speed physical downlink shared channel HS-PDSCH the HS-PDSCH being associated with the PICH.
  • a third aspect of the present invention provides an apparatus for message change processing, including:
  • a first determining module configured to determine a paging occasion of the first user equipment when the cell system broadcasts a message change
  • a second determining module configured to determine that a bit of the paging indicator PI of the first user equipment is at least one of spare bits in a PICH radio frame corresponding to a paging occasion determined by the first determining module, Or determining that the paging indicator PI of the first user equipment is a predefined PI, where the predefined PI bits are located in the paging indicator channel PICH radio frame corresponding to the paging occasion, the predefined The PI is an indication indicated by the network side or agreed by the network side and the user equipment to indicate a system broadcast message change;
  • a setting module configured to set a PI of the first user equipment determined by the second determining module to a predetermined value
  • a first sending module configured to send the setting module when the first determining module determines a paging occasion Set the PI.
  • the spare bit is the last 12 bits in the PICH radio frame.
  • the predefined PI bit is at least one of the first 288 bits in the PICH radio frame.
  • the first determining module includes:
  • a first determining unit configured to determine, according to the identifier of the first user equipment, a length of a first discontinuous reception DRX cycle used by the first user equipment and a length of a second DRX cycle used by the second user equipment
  • the PI of the first user equipment is located in a frame number of the PICH radio frame, and the frame number of the PI of the first user equipment that is located in the PICH radio frame indicates the paging occasion, where the second DRX cycle
  • the length is less than the length of the first DRX cycle.
  • the first determining module includes:
  • a second determining unit configured to determine a frame number of the PICH radio frame where the PI of the first user equipment is located according to a paging timing calculation formula, where a PI of the first user equipment is located in the PICH radio frame
  • the frame number indicates the paging occasion, and the paging timing calculation formula:
  • Paging Occasion indicates the paging occasion
  • IMSI is the international mobile subscriber identity code
  • mod indicates the modulo operation
  • div indicates the division operation
  • PBP is the paging block period
  • Frame Offset is the frame offset
  • DRX cycle length1 is the DRX length used by the first user equipment, that is, the length of the first DRX cycle
  • DRX cycle length2 is the DRX length used by the second user equipment. The length of the two DRX cycles, and the DRX cycle length2 is less than the DRX cycle length1.
  • the second determining module includes:
  • a third determining unit configured to determine, according to the number of paging indications and the identifier of the first user equipment, a number of spare bits of the PI of the first user equipment in the PICH radio frame, where The number of paging indications is based on the PICH wireless corresponding to the paging occasion of the first user equipment The number of spare bits of the frame and the number of bits occupied by the PI are determined.
  • the device further includes:
  • a calculation module configured to calculate, according to the following alternate bit formula, that the second determining module determines a number of spare bits of the PI of the first user equipment in the PICH radio frame:
  • V pi is a value calculated according to the identification number of the first user equipment and Np
  • SFN is the system frame number
  • Np represents the number of PIs in each PICH radio frame
  • Np' represents the number of PIs transmitted by the first user equipment through the spare bits.
  • the device further includes:
  • a second sending module configured to send a paging message on the associated channel of the PICH of the PI of the first user equipment, to notify the first user equipment that the broadcast message has changed.
  • the associated channel of the PICH of the PI of the first user equipment includes:
  • S-CCPCH Auxiliary common control physical channel S-CCPCH, said S-CCPCH associated with said PICH, or
  • High speed shared control channel HS-SCCH the HS-SCCH is associated with the PICH, or
  • a high speed physical downlink shared channel HS-PDSCH the HS-PDSCH being associated with the PICH.
  • a fourth aspect of the present invention provides an apparatus for message change processing, including:
  • a determining module configured to determine a paging occasion of the first user equipment
  • a monitoring module configured to monitor a corresponding paging indicator channel PICH at a paging occasion determined by the first determining module
  • a parsing module configured to parse at least one of spare bits in a PICH radio frame monitored by the intercepting module and obtain a predetermined value of the PI, or parse a predefined PI in the PICH radio frame and obtain a predetermined value of the PI, the predefined
  • the PI is an indication indicated by the network side or agreed by the network side and the user equipment to indicate a system broadcast message change;
  • the indication module is configured to: when the predetermined value of the PI obtained by the parsing module is 1 The system broadcast message has changed.
  • the spare bit is the last 12 bits in the PICH radio frame.
  • the predefined PI bit is at least one of the first 288 bits in the PICH radio frame.
  • the determining module includes:
  • a first determining unit configured to determine, according to the identifier of the first user equipment, a length of a first discontinuous reception DRX cycle used by the first user equipment and a length of a second DRX cycle used by the second user equipment
  • the PI of the first user equipment is located in a frame number of the PICH radio frame, and the frame number of the PI of the first user equipment that is located in the PICH radio frame indicates the paging occasion, where the second DRX cycle
  • the length is less than the length of the first DRX cycle.
  • the determining module includes:
  • a second determining unit configured to determine a frame number of the PICH radio frame where the PI of the first user equipment is located according to a paging timing calculation formula, where a PI of the first user equipment is located in the PICH radio frame
  • the frame number indicates the paging occasion, and the paging timing calculation formula:
  • Paging Occasion indicates the paging occasion
  • IMSI is the international mobile subscriber identity code
  • mod indicates the modulo operation
  • div indicates the division operation
  • PBP is the paging block period
  • Frame Offset is the frame offset
  • DRX cycle length1 is the DRX length used by the first user equipment, that is, the length of the first DRX cycle
  • DRX cycle length2 is the DRX length used by the second user equipment. The length of the two DRX cycles, and the DRX cycle length2 is less than the DRX cycle length1.
  • the parsing module includes:
  • a first parsing unit configured to parse, according to the number of paging indications and the identifier of the first user equipment, a number of spare bits of the PI of the first user equipment in the PICH radio frame, where The number of paging indications is based on the PICH wireless corresponding to the paging occasion of the first user equipment The number of spare bits of the frame and the number of bits occupied by the PI are determined.
  • the apparatus further includes:
  • a calculation module configured to calculate, according to the following alternate bit formula, a number of spare bits of the PI of the first user equipment parsed by the parsing module in the PICH radio frame:
  • V PI is calculated according to the identification number of the first user equipment and the value of Np
  • SFN represents the system frame number
  • Np represents the number of PIs in each PICH radio frame
  • Np' represents the number of PIs transmitted by the first user equipment through the spare bits.
  • the device further includes:
  • a receiving module configured to: after the indication module indicates that the system broadcast message is changed, receive a paging message from the associated channel of the PICH, and perform a system broadcast message change according to the paging message; or
  • the associated channel of the PICH includes:
  • S-CCPCH Auxiliary common control physical channel S-CCPCH, said S-CCPCH associated with said PICH, or
  • High speed shared control channel HS-SCCH the HS-SCCH is associated with the PICH, or
  • a high speed physical downlink shared channel HS-PDSCH the HS-PDSCH being associated with the PICH.
  • a fifth aspect of the present invention provides a system for message change processing, including: a base station and a user equipment,
  • the base station is configured to: when a cell system broadcast message changes, determine a paging occasion of the first user equipment; determine that a paging indicator PI of the first user equipment is located at a paging indicator channel PICH corresponding to the paging occasion At least one of the spare bits in the radio frame, or determining that the paging indicator PI of the first user equipment is a predefined PI, wherein the pre-defined PI bit is located at the paging indicator corresponding to the paging occasion
  • the predefined PI is an indication indicated by the network side or agreed by the network side and the user equipment to indicate a system broadcast message change; setting the PI of the first user equipment to a predetermined value; The PI is transmitted at the paging occasion.
  • the user equipment is configured to: determine a paging occasion of the first user equipment; monitor a paging indicator channel PICH corresponding to the paging occasion; parse at least one of the spare bits in the PICH radio frame and obtain a predetermined value of the PI, Or parsing a pre-defined PI in the PICH radio frame and acquiring a predetermined value of the PI, where the predefined PI is an indication indicated by the network side or agreed by the network side and the user equipment to indicate a system broadcast message change; When the predetermined value of PI is 1, the system broadcast message is instructed to be changed.
  • a sixth aspect of the present invention provides an apparatus for message change processing, including: an input device, an output device, a memory, and a processor,
  • the processor is configured to perform the following steps:
  • the bit of the paging indicator PI of the first user equipment is at least one of the spare bits in the PICH radio frame corresponding to the paging occasion corresponding to the paging occasion, or determining that the paging indicator PI of the first user equipment is a predefined PI, wherein the predefined PI bit is located in a paging indicator channel PICH radio frame corresponding to the paging occasion, and the predefined PI is indicated by the network side or the network side and the user equipment An agreed indication of a system broadcast message change;
  • the output device is configured to perform the following steps:
  • the PI is transmitted at the paging occasion.
  • a seventh aspect of the present invention provides an apparatus for message change processing, including: an input device, an output device, a memory, and a processor,
  • the processor is configured to perform the following steps:
  • the PI for indicating cell system message change is placed in the PICH radio frame.
  • the base station side indicates the change of the system message to the first user equipment by using the special PI, so as to prevent the second user equipment from being in the first DRX cycle.
  • the notification message of the system message change is read, so that the second user equipment saves its own power and improves the user experience.
  • FIG. 1 is a schematic diagram showing changes after introducing a long discontinuous reception cycle in this embodiment
  • FIG. 2 is a schematic diagram of an embodiment of a method for message change processing in this embodiment
  • FIG. 3 is a schematic structural diagram of a paging indicator channel in this embodiment
  • FIG. 4 is a schematic diagram of a message change of a multiplexed bit indication system in the embodiment
  • FIG. 5 is a schematic diagram of another embodiment of a method for message change processing in this embodiment.
  • FIG. 6 is a schematic diagram of an embodiment of an apparatus for message change processing in this embodiment
  • FIG. 7 is a schematic diagram of another embodiment of a device for message change processing in this embodiment.
  • FIG. 8 is a schematic diagram of another embodiment of a device for message change processing in this embodiment.
  • FIG. 9 is a schematic diagram of another embodiment of a device for message change processing in this embodiment.
  • FIG. 10 is a schematic diagram of another embodiment of a device for message change processing in this embodiment.
  • FIG. 11 is a schematic diagram of another embodiment of a device for message change processing in this embodiment.
  • FIG. 12 is a schematic diagram of an embodiment of an apparatus for message change processing in this embodiment.
  • FIG. 13 is a schematic diagram of another embodiment of a device for message change processing in this embodiment.
  • FIG. 14 is a schematic diagram of another embodiment of a device for message change processing in this embodiment.
  • 15 is a schematic diagram of another embodiment of a device for message change processing in this embodiment.
  • 16 is a schematic diagram of another embodiment of a device for message change processing in this embodiment.
  • 17 is a schematic diagram of another embodiment of a device for message change processing in this embodiment.
  • FIG. 18 is a schematic diagram of an embodiment of a system for message change processing in the embodiment.
  • FIG. 19 is a schematic structural diagram of a base station for message change processing in the embodiment.
  • FIG. 20 is a schematic structural diagram of a user equipment for message change processing in the embodiment.
  • the embodiment of the invention provides a method, a device and a system for processing a message change, which can send a PI of a system message change to a first user equipment by using a spare bit or a predefined bit in a radio frame to avoid all second old user equipments. These bits are processed repeatedly to save power.
  • the first user equipment may be understood as a new user equipment, that is, a user equipment having a long DRX period
  • the second user equipment is an old user equipment, that is, having a shorter
  • the user equipment of the DRX cycle the first device appears after the second device.
  • the long DRX cycle herein may also be understood as a DRX cycle exceeding 5.12 seconds
  • the short DRX cycle means that the DRX cycle is less than or equal to 5.12 seconds.
  • the first user equipment reads the paging indicator PI of the paging indicator channel PICH of the first user equipment in the first discontinuous reception DRX cycle
  • the second user equipment reads the second user in the second DRX cycle.
  • the PI of the PICH of the device where the first DRX period is greater than the second DRX period
  • the user equipment identifier of the device is used to uniquely identify the user equipment
  • the user equipment refers to the user equipment including the user.
  • the method may be performed by a base station, where the first user equipment is in a first discontinuous reception (DRX) period. Reading a paging indicator channel of the first user equipment (PICH) Paging Indication (PI), the second user equipment reads the PI of the PICH of the second user equipment in a second DRX cycle, wherein the first DRX cycle is greater than the second DRX cycle.
  • DRX discontinuous reception
  • PICH Paging Indication
  • the paging occasion of the first user equipment is determined, and the paging occasion may correspond to the frame number of the radio frame.
  • the cell system broadcast message change may refer to a change of the system message or a situation in which the terminal is called.
  • the manner of determining the paging occasion may be calculated and obtained by using a corresponding formula.
  • the paging indication read by the user equipment is based on an International Mobile Subscriber Identity (IMSI) or a Universal Mobile Telecommunications System Radio Network Temporary Identifier (U_RNTI). It is determined that each user equipment has a paging occasion in each DRX cycle, that is, each user equipment needs to read the PI once in one DRX cycle.
  • IMSI International Mobile Subscriber Identity
  • U_RNTI Universal Mobile Telecommunications System Radio Network Temporary Identifier
  • the base station When the cell system message is changed, the base station notifies the idle state, the cell paging channel (Cell_PCH, Cell Paging Channel) state, the URA_PCH, UTRAN Registration Area Paging Channel state, and the cell forward access channel ( All user equipments in the CELL_FACH, Forward Access Channel state, preferably, the base station needs to set the PI on all radio frames in the entire DRX cycle to 1, so that all user equipments in the DRX cycle will receive the PI.
  • Cell_PCH Cell Paging Channel
  • URA_PCH User Radio Access Channel
  • UTRAN Registration Area Paging Channel state a cell forward access channel
  • All user equipments in the CELL_FACH, Forward Access Channel state preferably, the base station needs to set the PI on all radio frames in the entire DRX cycle to 1, so that all user equipments in the DRX cycle will receive the PI.
  • the paging indicator of the first user equipment is located at least one of the spare bits in the paging indicator channel PICH radio frame corresponding to the paging occasion, or determine that the paging indicator PI of the first user equipment is a predefined PI, wherein the pre-defined PI bit is located in a paging indicator channel PICH radio frame corresponding to a paging occasion, and the predefined PI is indicated by the network side or agreed by the network side and the user equipment for indicating the system.
  • the base station determines that the bit of the PI of the first user equipment is at least one of the spare bits in the PICH radio frame corresponding to the paging indicator corresponding to the paging occasion.
  • FIG. 3 is a paging indicator channel.
  • a PICH radio frame length of 10 milliseconds (ms), consisting of 300 bits, of which 288 bits (b0, b1, ..., b287)) are used to carry PI can
  • a bit called a predefined PI may also be referred to as a multiplexed bit, wherein the predefined PI may be located in a predefined PI bit within the PICH radio frame corresponding to the paging occasion, predefined PI It is an indication indicated by the network side or agreed by the network side and the user equipment to indicate a system broadcast message change.
  • the remaining 12 bits are reserved for future use without transmitting bits (b288, b289, ..., b299), which are referred to as spare bits in this embodiment.
  • the base station may also determine that the bit of the PI of the first user equipment is at least one of the predefined PI bits in the PICH radio frame corresponding to the paging occasion, where the PI is located in the PICH radio frame. At least one of 288 bits, please refer to FIG. 4.
  • FIG. 4 is a schematic diagram of a predefined PI bit indication system message change, wherein the first 288 bits in a PICH radio frame, the pre-defined PI bit is in the bearer PI The pre-defined PI bit also carries the PI used by the first user equipment, and will now carry the new PI to indicate whether the first user equipment needs to change the system message.
  • the system message change is indicated by using one or more bits of b0 to b287.
  • the location of the PI in the PICH radio frame is not limited, and the specific location may be through the base station side and the first user.
  • the device calculates, or may be a PI indicating that the specific user message is changed to the first user equipment by the base station side.
  • the paging occasion of the first user equipment corresponds to a first PICH radio frame
  • at least one of spare bits (eg, 12 bits) of the first PICH radio frame is set to the first The bit of the PI of a user equipment.
  • the number of bits occupied by the PI is the common divisor of the spare bits (for example, 12 bits): 1, 2, 3, 4, 6, and 12.
  • the second user equipment uses The bit of the PI is at least one of the first 288 bits of the first PICH radio frame.
  • the paging occasion of the first user equipment corresponds to a first PICH radio frame
  • the bit of the PI used by the first user equipment is the first 288 bits of the first PICH radio frame.
  • the PI of other user equipment may also use the corresponding bit, instead of using the PI for the first user equipment, the PI of the first user equipment and other user equipment may be used.
  • the PI multiplexes the bit for example, when the PI of the second user equipment uses at least one bit of the first 288 of the second PICH radio frame, the first used by the second user equipment
  • the bit of the PI of the PICH radio frame is also set to the bit of the PI of the first user equipment, that is, the first user equipment and the second user equipment use the same PICH radio frame and the PI is the same
  • the bits occupied by the PICH radio frame that is, the same PI.
  • the number of bits occupied by the PI is a common divisor of reserved bits (for example, 288 bits): 1, 2, 3, 4, ..., 288.
  • the predetermined value is used to indicate that the user equipment reads the notification message to obtain the system message change information or directly indicates that the system message has changed.
  • the base station sets the PI value of the first user equipment to 1, when the PI When the value is 1, it indicates that the user equipment reads the notification message to obtain the system message change information or directly indicates that the system message has changed.
  • the PI value is 0, the user equipment does not read the notification message or the system message on the associated channel. No changes have occurred and vice versa.
  • the base station sends a PI at the paging occasion obtained in the foregoing step 201, so that the first user equipment receives the PI, and obtains information of the system broadcast message change.
  • the first DRX period is a DRX period of the first user equipment, and after the base station broadcasts the PI in the first DRX period, the first user equipment receives the PI at the paging occasion.
  • the second user equipment receives the PI in the second DRX cycle, the second DRX cycle is the DRX cycle of the second user equipment, and the second user equipment, the length of the second DRX cycle is less than the first DRX cycle.
  • the second DRX cycle may be 5.12 s
  • the first DRX cycle may be 40.96 s.
  • the PI for indicating the cell system message change is placed in the spare bit of the PICH radio frame or in a predefined bit.
  • the base station side passes the special PI direction.
  • a user equipment indicates a change of the system message, and the second user equipment is prevented from reading the notification message of the system message change multiple times in the first DRX period, so that the second user equipment saves its own power and improves the user experience.
  • the spare bit is the last 12 bits in the PICH radio frame.
  • the spare bit is determined to be the last 12 remaining in the PICH radio frame for future use without being transmitted, that is, 12 bits of b288 to b299 corresponding to FIG. 3 in the foregoing embodiment. .
  • the predefined PI bit is in the PICH radio frame. At least one of the first 288 bits.
  • the pre-defined PI bits determine the first 288 pre-occupied bits of the start of the PICH radio frame, that is, 288 bits of b0 to b287 corresponding to FIG. 3 in the above embodiment.
  • bit of the predefined PI may also be referred to as a multiplexed bit, or a reserved bit.
  • a multiplexed bit or a reserved bit.
  • the spare bit is interpreted with the predefined PI bit, so that the operability of the solution in actual use is improved, and at the same time, the specific situation of the solution is specifically analyzed and increased. The feasibility of this program.
  • determining a paging occasion of the first user equipment may include:
  • the frame number of the first user equipment whose PI is located in the PICH radio frame indicates a paging occasion, wherein the length of the second DRX cycle is less than the length of the first DRX cycle.
  • the base station determines, according to the identifier of the first user equipment, the length of the first DRX cycle used by the first user equipment, and the length of the second DRX cycle used by the second user equipment to determine that the PI of the first user equipment is located.
  • the frame number of the PICH radio frame specifically, can be calculated using a paging timing calculation formula.
  • the length of the second DRX cycle is less than the length of the first DRX cycle.
  • determining a paging occasion of the first user equipment may include:
  • Paging Occasion indicates the paging occasion
  • IMSI is the international mobile subscriber identity code
  • mod indicates the modulo operation
  • div indicates the division operation
  • PBP is the paging block period
  • Frame Offset is the frame offset
  • DRX cycle length1 is the DRX length used by the first user equipment, that is, the length of the first DRX cycle
  • DRX cycle length2 is the DRX length used by the second user equipment. The length of the two DRX cycles, and the DRX cycle length2 is less than the DRX cycle length1.
  • the paging timing calculation formula can have two expressions, and the two formulas are respectively introduced below:
  • Paging Occasion indicates the paging occasion
  • IMSI is the international mobile subscriber identity code
  • mod indicates the modulo operation
  • DRX cycle length indicates the first DRX cycle length used by the first user equipment
  • div indicates the division operation
  • PBP is the paging block period.
  • PBP Paging Block Periodicity
  • Frame Offset is the frame offset
  • for frequency division duplex (FDD, frequency division) Duplex is a frame offset of 0
  • PBP is 1 for FDD, and for time division duplex (TDD), the value of the PICH radio frame is informed in the system information.
  • Paging Occasion indicates the paging occasion
  • IMSI is the international mobile subscriber identity code
  • mod indicates the modulo operation
  • div indicates the division operation
  • PBP is the paging block period
  • Frame Offset is the frame offset
  • DRX cycle length1 is the DRX length used by the first user equipment, that is, the length of the first DRX cycle
  • DRX cycle length2 is the DRX length used by the second user equipment. The length of the two DRX cycles, and the DRX cycle length2 is less than the DRX cycle length1.
  • the DRX cycle length 1 may be an integer multiple of the DRX cycle length 2 or other length longer than the DRX cycle length 2, and thus is not limited herein.
  • the maximum value is 4096 radio frames, because a radio frame length is 10 milliseconds (ms), so only the SFN is in the SFN. Supporting 40.96 seconds, when the paging occasion of the first user equipment exceeds 40.96 seconds, the base station and the second user equipment may save the result as an absolute time, which is an accurate time at a certain time point. Time, such as at 18:30:25,500 milliseconds on October 8, 2015, the first user equipment will listen to the PICH at the absolute time point.
  • the base station and the first user equipment may also save the result as an integer multiple of the SFN maximum value + PO', and the value of PO' is within 4096, the first user equipment The PICH is monitored at a time point corresponding to an integer multiple of the SFN maximum value + PO', where PO' is a paging occasion.
  • two paging timing calculation formulas are specifically proposed, one of which is a method for calculating a paging occasion in the prior art, and the other is a new paging timing calculation formula constructed in the present scheme. This can greatly improve the operability of the program in practical applications.
  • determining that the bit of the paging indicator PI of the first user equipment is at least one of the spare bits in the PICH radio frame corresponding to the paging occasion corresponding to the paging occasion may include:
  • the number of spare bits of the PICH radio frame corresponding to the timing and the number of bits occupied by the PI are determined.
  • the base station may also determine, according to the number of paging indications of the first user equipment and the identifier of the first user equipment, the number of spare bits of the PI of the first user equipment in the PICH radio frame, where The number of the call indications may be determined according to the number of spare bits of the PICH radio frame corresponding to the paging occasion of the first user equipment and the number of bits occupied by the PI. Specifically, the number of spare bits of the PI in the PICH radio frame can be calculated by the alternate bit formula.
  • the sixth optional embodiment of the method for message change processing provided by the embodiment of the present invention may further include:
  • the number of spare bits of the PI of the first user equipment in the PICH radio frame is calculated according to the following alternate bit formula:
  • V pi is a value calculated according to the identification number of the first user equipment and Np
  • SFN is the system frame number
  • Np represents the number of PIs in each PICH radio frame
  • Np' represents the number of PIs transmitted by the first user equipment through the spare bits.
  • the base station determines, according to the number of paging indications and the identification number of the first user equipment, a number of reserved bits of the PI of the first user equipment in the PICH radio frame, where the The number of the call indications is determined according to the number of reserved bits of the PICH radio frame corresponding to the paging occasion of the first user equipment and the number of bits occupied by the PI.
  • the number of paging indications is equal to the number of reserved bits of the PICH radio frame corresponding to the paging occasion of the first user equipment divided by the number of bits occupied by the PI, for example, the The number of paging indications is a common divisor of the number of reserved bits of the PICH radio frame corresponding to the paging occasion of the first user equipment, for example, if the paging moment of the first user equipment corresponds to the PICH
  • the number of reserved bits of the radio frame is 12 bits
  • the number of bits occupied by the PI is a common divisor of 12: 1, 2, 3, 4, 6, and 12, then the number of paging indications Corresponding are: 12, 6, 4, 3, 2 and 1.
  • the number of spare bits of the PI of the first user equipment in the PICH radio frame is calculated according to the following alternate bit formula (3):
  • the frame number, mod represents the modulo operation
  • Np represents the number of PIs in each PICH radio frame
  • Np' represents the number of PIs transmitted through the spare bits.
  • the base station may determine, according to the alternate bit bit formula, the number of the spare bit of the PI of the first user equipment in the corresponding PICH radio frame, and the spare bit formula is used to calculate the first use. For the number of spare bits of the PI of the user equipment in the PICH radio frame, see Equation (3).
  • the number of bits occupied by the PI is a common divisor of 12, and a PI can have 1 bit or multiple bits, because there are 12 spare bits in a PICH radio frame.
  • Carrying PI when carrying 2 PIs, each PI is composed of 6 bits; when carrying 3 PIs, each PI is composed of 4 bits.
  • the PI derived from the above may also be composed of 2 bits or 3 bits, and thus is not limited herein.
  • each user equipment monitors the bit where the PI is located in the PICH radio frame where the corresponding paging occasion is located, and when the PI corresponding to the bit where the PI is located is 1, the user equipment is indicated.
  • the system message is changed or the user equipment is instructed to read the notification message, thereby obtaining system message change information, that is, reading the paging channel (PCH, Paging Channel) or the high speed downlink shared channel (HS-DSCH) associated with the PICH.
  • PCH paging channel
  • HS-DSCH high speed downlink shared channel
  • the modulo values are 0, 1, 2, ..., 11 respectively corresponding to b288, b289, b290, ... b299 of the PICH spare bits, and the first user equipment also reads the corresponding bit to determine whether a paging indication is received.
  • the IMSI is only a calculation method, and the user equipment can also be calculated by other identifiers, such as a U-RNTI (UT-Radio Temporary Identifier), which is not limited herein.
  • U-RNTI UT-Radio Temporary Identifier
  • the same bit of the spare bit in the PICH radio frame may be allocated to the PI of each user equipment for different user equipments, for example, the base station side specifies that the system broadcast message needs to be read by the PI. s position.
  • different user bits on the spare bits in the PICH radio frame may also be allocated for different user equipment's PIs for different user equipments.
  • the PI here is only a description of the paging indication, and the PI may be one when the current user equipment receives the non-system broadcast message change. It may be different, so it is not limited here.
  • each user equipment monitors certain bits of the PICH radio frame in which the corresponding paging occasion is located, for example, b288 bit and b289 bit, and when it is judged that the corresponding PI is 1, it receives
  • the PCH or HS-DSCH associated with the PICH is used to obtain information about the corresponding cell system message change.
  • the PI calculated by the upper layer for a certain user equipment is associated with a paging indicator Pq, where q is calculated according to a functional formula, see Equation 3.
  • the PI calculated by the higher layer is associated with the value of the paging indicator Pq. If the paging indicator is set to "1" in a certain frame, it indicates that the user equipment associated with this paging indication and PI should read the associated S-CCPCH frame or HS-DSCH.
  • the same multiple bits on the spare bits in the PICH radio frame may be allocated to the PI of each user equipment for different user equipments, or the PICH radio frames may be allocated to different user equipments.
  • a plurality of different bits on different bits on the spare bits are used for the PI of each user equipment.
  • determining the number of the spare bit in the PICH radio frame corresponding to the frame number of the PI of the first user equipment according to the spare bit formula is important for the implementation of the scheme, and is included for the PI. Different calculations can be made for different bit positions, which is practical for the implementation of the program. The benefits of a wide range of applications.
  • the seventh method of the message change processing method provided by the embodiment of the present invention is provided on the basis of the foregoing embodiment corresponding to FIG. 2 and any one of the first to sixth alternative embodiments corresponding to FIG.
  • the method may further include:
  • a paging message is sent on the associated channel of the PICH of the PI of the first user equipment to inform the first user equipment that the broadcast message has changed.
  • the base station sends a paging message on the associated channel of the PICH of the PI of the first user equipment, so as to notify the first user equipment that the broadcast message has changed.
  • the first user equipment When the first user equipment obtains the PI set to 1, it receives the notification message paging type 1 (PAGING TYPE 1) or system information change indication (SYSTEM INFORMATION
  • PAGING TYPE 1 PAGING TYPE 1
  • SYSTEM INFORMATION The CHANGE INDICATION determines whether or not to read the system message based on the content of the BC (Improvement Information Element) (Broadcast Control Channel modification information) of the information element (IE, Information Element) included in the received notification message.
  • a method for the base station to notify the first user equipment when the cell system message is changed is provided, so that the solution is more operable in the implementation process, and at the same time, for the first user equipment
  • the information of the cell system message change can be received through the relevant channel, so that the first device reads the message more time-sensitive.
  • the associated channel of the PICH of the PI of the first user equipment is selected.
  • High speed shared control channel HS-SCCH High speed shared control channel HS-SCCH, HS-SCCH associated with PICH, or
  • the high speed physical downlink shared channel HS-PDSCH, HS-PDSCH is associated with PICH.
  • the associated channel of the PICH of the first user equipment may be a Secondary Common Control Physical Channel (S-CCPCH) for carrying data from the transport channels FACH and PCH, used by the S-CCPCH.
  • S-CCPCH Secondary Common Control Physical Channel
  • Configuration information such as code and time slot is broadcast in the cell.
  • the physical layer may combine data from one or more FACHs and one PCH on a coded composite transport channel (CCTrCH, Coded Composite Transport Channel) according to the configuration, and then map CCTrCH data to one or more pieces according to the configuration.
  • CCTrCH Coded Composite Transport Channel
  • the associated channel of the PICH of the first user equipment may also be a high speed shared control channel (HS-SCCH), the PICH and the HS-SCCH have a specified timing relationship, and the HS-SCCH carries the downlink channel of the signaling information. And up to 4 HS-SCCHs per user equipment.
  • the HS-SCCH is associated with a high speed physical downlink shared channel (HS-PDSCH), and is mapped to a high-speed downlink shared channel (HS-DSCH) for carrying a paging message. On the HS-PDSCH, the HS-DSCH is associated with the PICH.
  • the associated channel is embodied as an S-CCPCH or HS-PDSCH, or HS-DSCH indirectly associated with PICH, makes this scheme more feasible in practical applications, and can select associated channels according to different situations, further improving the flexibility of the scheme.
  • the method for the message change processing in this embodiment is described above from the perspective of the base station.
  • the method for the message change processing in this embodiment is described from the perspective of the first user equipment. Referring to FIG. 5, the message change processing in this embodiment is described.
  • Another embodiment of the method includes:
  • the paging occasion of the first user equipment is determined, and the paging occasion may correspond to the frame number of the radio frame.
  • the cell system broadcast message change may refer to a change of the system message or a situation in which the terminal is called.
  • the manner of determining the paging occasion may be calculated and obtained by using a corresponding formula.
  • the paging indicator read by the user equipment is determined based on the IMS or by the U_RNTI, and each user equipment has a paging occasion in each DRX cycle, that is, each user equipment is in a DRX cycle. Read PI once.
  • the base station When the cell system message is changed, the base station needs to notify all user equipments of the idle state, the Cell_PCH state, the URA_PCH state, and the CELL_FACH state, preferably, the base station needs to set the PI on all radio frames of the entire DRX cycle to 1, such a DRX. All user devices in the cycle receive PI.
  • the first user equipment monitors the PICH corresponding to the paging occasion, and the listening time may be a fixed period of time.
  • the first user equipment may obtain at least one of the spare bits in the PICH radio frame and obtain a predetermined value of the PI.
  • FIG. 3 is a schematic structural diagram of a paging indicator channel, and a PICH radio frame. It is 10 milliseconds (ms) long and consists of 300 bits. The last 12 bits are reserved for future use without transmitting bits (b288, b289, ..., b299), that is, in this embodiment. It is called the spare bit.
  • the first user equipment may also obtain at least one of the predefined PI bits in the PICH radio frame and obtain a predetermined value of the PI, see FIG. 3, where the first 288 bits in a PICH radio frame (b0, B1, ..., b287)) is a bit used to carry the PI, which may be referred to as a predefined PI in this embodiment, and may also be referred to as a multiplexing bit, and may also be called To reserve a bit, the pre-defined PI bit is already occupied before the PI is carried. That is, the pre-defined PI bit also carries the PI used by the original first user equipment, and will now carry the new PI.
  • a bit or a plurality of bits in b0 to b287 are used to indicate system message change.
  • the PI is in the PICH radio frame.
  • the location is not limited. The specific location may be calculated by the base station side and the first user equipment, or may be the PI indicating the specific system message change to the first user equipment by the base station side.
  • the paging occasion of the first user equipment corresponds to a first PICH radio frame
  • at least one of spare bits (eg, 12 bits) of the first PICH radio frame is set to the first The bit of the PI of a user equipment.
  • the number of bits occupied by the PI is the common divisor of the spare bits (for example, 12 bits): 1, 2, 3, 4, 6, and 12.
  • the second user equipment uses The bit of the PI is at least one of the first 288 bits of the first PICH radio frame.
  • the paging occasion of the first user equipment corresponds to a first PICH radio frame
  • the bit of the PI used by the first user equipment is the first 288 bits of the first PICH radio frame.
  • the PI of other user equipment may also use the corresponding bit, instead of using the PI for the first user equipment, the PI of the first user equipment and other user equipment may be used.
  • the PI multiplexes the bit, for example, when the PI of the second user equipment uses at least one bit of the first 288 of the second PICH radio frame, the PI of the first PICH radio frame used by the second user equipment
  • the bit is also set to the bit of the PI of the first user equipment, that is, the first user equipment and the second user equipment use the same PICH radio frame and the PI is occupied by the same PICH radio frame.
  • the bits are the same PI.
  • the bits occupied by the PI The number of bits is a common divisor of reserved bits (for example, 288 bits): 1, 2, 3, 4, ..., 288.
  • the predetermined value is used to indicate that the user equipment reads the notification message to obtain the system message change information or directly indicates that the system message has changed.
  • the base station sets the PI value of the first user equipment to 1, when the PI When the value is 1, it indicates that the user equipment reads the notification message to obtain the system message change information or directly indicates that the system message has changed.
  • the PI value is 0, the user equipment does not read the notification message or the system message on the associated channel. No changes have occurred and vice versa.
  • the PI for indicating the cell system message change is placed in the spare bit of the PICH radio frame or in a predefined bit.
  • the base station side passes the special PI direction.
  • a user equipment indicates a change of the system message, and the second user equipment is prevented from reading the notification message of the system message change multiple times in the first DRX period, so that the second user equipment saves its own power and improves the user experience.
  • the spare bit is the last 12 bits in the PICH radio frame.
  • the spare bit is determined to be the last 12 remaining in the PICH radio frame for future use without being transmitted, that is, 12 bits of b288 to b299 corresponding to FIG. 3 in the foregoing embodiment. .
  • the predefined PI bit is in the PICH radio frame. At least one of the first 288 bits.
  • the pre-defined PI bits determine the first 288 pre-occupied bits of the start of the PICH radio frame, that is, 288 bits of b0 to b287 corresponding to FIG. 3 in the above embodiment. It may also be referred to as a multiplexed bit, or a reserved bit, which should be understood herein as a noun that can express its function, so the specific name is not limited herein.
  • the spare bit is interpreted with the predefined PI bit, so that the operability of the solution in actual use is improved, and at the same time, the specific situation of the solution is specifically analyzed and increased. The feasibility of this program.
  • determining the paging occasion of the first user equipment may include:
  • the frame number of the first user equipment whose PI is located in the PICH radio frame indicates a paging occasion, wherein the length of the second DRX cycle is less than the length of the first DRX cycle.
  • the first user equipment may determine the first user according to the identifier of the first user equipment, and the length of the first DRX period used by the first user equipment and the length of the second DRX period used by the second user equipment.
  • the PI of the device is located in the frame number of the PICH radio frame, and specifically, it can be calculated using the paging timing calculation formula.
  • the length of the second DRX cycle is less than the length of the first DRX cycle.
  • determining a paging occasion of the first user equipment may include:
  • the frame number of the PICH radio frame in which the PI of the first user equipment is located is determined according to the following paging timing calculation formula.
  • the PI of the first user equipment is located in the frame number of the PICH radio frame indicating the paging occasion, and the paging timing calculation formula is:
  • Paging Occasion indicates the paging occasion
  • IMSI is the international mobile subscriber identity code
  • mod indicates the modulo operation
  • div indicates the division operation
  • PBP is the paging block period
  • Frame Offset is the frame offset
  • DRX cycle length1 is the DRX length used by the first user equipment, that is, the length of the first DRX cycle
  • DRX cycle length2 is the DRX length used by the second user equipment. The length of the two DRX cycles, and the DRX cycle length2 is less than the DRX cycle length1.
  • the paging timing calculation formula can have two expressions, and the two formulas are respectively introduced below:
  • Paging Occasion indicates the paging occasion
  • IMSI is the international mobile subscriber identity code
  • mod indicates the modulo operation
  • DRX cycle length indicates the first DRX cycle length used by the first user equipment
  • div indicates the division operation
  • PBP is the paging block period.
  • n is the cell SFN
  • n 0, 1, 2...SFN
  • Frame Offset is the frame offset
  • the frame offset is 0 for FDD
  • PBP is 1 for FDD
  • TDD TDD
  • Paging Occasion indicates the paging occasion
  • IMSI is the international mobile subscriber identity code
  • mod indicates the modulo operation
  • div indicates the division operation
  • PBP is the paging block period
  • Frame Offset is the frame offset
  • DRX cycle length1 is the DRX length used by the first user equipment, that is, the length of the first DRX cycle
  • DRX cycle length2 is the DRX length used by the second user equipment. The length of the two DRX cycles, and the DRX cycle length2 is less than the DRX cycle length1.
  • the DRX cycle length 1 may be an integer multiple of the DRX cycle length 2 or other length longer than the DRX cycle length 1 , and thus is not limited herein.
  • the maximum value is 4096 radio frames, because a radio frame length is 10 milliseconds (ms), so only the SFN is in the SFN. Supporting 40.96 seconds, when the paging occasion of the first user equipment exceeds 40.96 seconds, the base station and the second user equipment may save the result as an absolute time, which is an accurate time at a certain time point. Time, such as at 18:30:25,500 milliseconds on October 8, 2015, the first user equipment will listen to the PICH at the absolute time point.
  • the base station and the first user equipment may also save the result as an integer multiple of the SFN maximum value + PO', and the value of PO' is within 4096, the first user equipment The PICH is monitored at a time point corresponding to an integer multiple of the SFN maximum value + PO', where PO' is a paging occasion.
  • two paging timing calculation formulas are specifically proposed, one of which is a method for calculating a paging occasion in the prior art, and the other is a new paging timing calculation formula constructed in the present scheme. This can greatly improve the operability of the program in practical applications.
  • parsing at least one of the spare bits in the PICH radio frame may include:
  • the first user equipment may also determine, according to the number of paging indicators of the first user equipment and the identifier of the first user equipment, the number of spare bits of the PI of the first user equipment in the PICH radio frame.
  • the number of paging indications may be determined according to the number of spare bits of the PICH radio frame corresponding to the paging occasion of the first user equipment and the number of bits occupied by the PI. Specifically, the number of spare bits of the PI in the PICH radio frame can be calculated by the alternate bit formula.
  • the method may further include:
  • the number of spare bits of the PI of the first user equipment in the PICH radio frame is calculated according to the following alternate bit formula:
  • V PI is calculated according to the identification number of the first user equipment and the value of Np
  • SFN represents the system frame number
  • Np represents the number of PIs in each PICH radio frame
  • Np' represents the number of PIs transmitted by the first user equipment through the spare bits.
  • the first user equipment determines, according to the number of paging indications and the identification number of the first user equipment, a number of reserved bits of the PI of the first user equipment in the PICH radio frame,
  • the number of the paging indications is determined according to the number of reserved bits of the PICH radio frame corresponding to the paging occasion of the first user equipment and the number of bits occupied by the PI.
  • the number of paging indications is equal to the number of reserved bits of the PICH radio frame corresponding to the paging occasion of the first user equipment divided by the number of bits occupied by the PI, for example, the The number of paging indications is the first a common divisor of the number of reserved bits of the PICH radio frame corresponding to the paging occasion of the user equipment, for example, if the number of reserved bits of the PICH radio frame corresponding to the paging occasion of the first user equipment is 12 bits, the number of bits occupied by the PI is a common divisor of 12: 1, 2, 3, 4, 6, and 12, and the number of paging indications corresponds to: 12, 6, 4, 3 , 2 and 1.
  • the number of spare bits of the PI of the first user equipment in the PICH radio frame is calculated according to the following alternate bit formula (3):
  • the frame number, mod represents the modulo operation
  • Np represents the number of PIs in each PICH radio frame
  • Np' represents the number of PIs transmitted through the spare bits.
  • the first user equipment may determine, according to the alternate bit bit formula, the number of the spare bit in the corresponding PICH radio frame of the PI of the first user equipment, and the spare bit formula is used to calculate the PI of the first user equipment. For the number of spare bits in the PICH radio frame, see equation (3).
  • the number of bits occupied by the PI is a common divisor of 12, and a PI can have 1 bit or multiple bits, because there are 12 spare bits in a PICH radio frame.
  • Carrying PI when carrying 2 PIs, each PI is composed of 6 bits; when carrying 3 PIs, each PI is composed of 4 bits.
  • the PI derived from the above may also be composed of 2 bits or 3 bits, and thus is not limited herein.
  • each user equipment monitors the bit where the PI is located in the PICH radio frame where the corresponding paging occasion is located, and when the PI corresponding to the bit where the PI is located is 1, the user equipment is indicated.
  • the system message is changed or the user equipment is instructed to read the notification message, thereby obtaining system message change information, that is, reading the paging channel (PCH, Paging Channel) or the high speed downlink shared channel (HS-DSCH) associated with the PICH.
  • PCH paging channel
  • HS-DSCH high speed downlink shared channel
  • the IMSI is only a calculation method, and the user equipment can also be calculated by other identifiers, such as a U-RNTI (UT-Radio Temporary Identifier), which is not limited herein.
  • U-RNTI UT-Radio Temporary Identifier
  • the same bit of the spare bit in the PICH radio frame may be allocated to the PI of each user equipment for different user equipments, for example, the base station side specifies that the system broadcast message needs to be read by the PI. s position.
  • different user bits on the spare bits in the PICH radio frame may also be allocated for different user equipment's PIs for different user equipments.
  • the PI here is only a description of the paging indication, and the PI may be one or different when the current user equipment receives the non-system broadcast message change, so No restrictions are imposed.
  • each user equipment monitors certain bits of the PICH radio frame in which the corresponding paging occasion is located, for example, b288 bit and b289 bit, and when it is judged that the corresponding PI is 1, it receives
  • the PCH or HS-DSCH associated with the PICH is used to obtain information about the corresponding cell system message change.
  • the PI calculated by the upper layer for a certain user equipment is associated with a paging indicator Pq, where q is calculated according to a functional formula, see Equation 3.
  • the PI calculated by the higher layer is associated with the value of the paging indicator Pq. If the paging indicator is set to "1" in a certain frame, it indicates that the user equipment associated with this paging indication and PI should read the associated S-CCPCH frame or HS-DSCH.
  • the same multiple bits on the spare bits in the PICH radio frame may be allocated to the PI of each user equipment for different user equipments, or the PICH radio frames may be allocated to different user equipments.
  • a plurality of different bits on different bits on the spare bits are used for the PI of each user equipment.
  • determining the number of the spare bit in the PICH radio frame corresponding to the frame number of the PI of the first user equipment according to the spare bit formula is important for the implementation of the scheme, and is included for the PI. Different calculations can be made for different bit positions, which is practical for the implementation of the program. The benefits of a wide range of applications.
  • the seventh method of the message change processing method provided by the embodiment of the present invention is provided on the basis of any one of the first to sixth alternative embodiments corresponding to the embodiment of FIG.
  • the method may further include:
  • the first user equipment may receive the paging message from the associated channel of the PICH, and then perform the change of the corresponding system broadcast message according to the paging message.
  • the first user equipment does not receive the paging message from the associated channel of the PICH, but directly receives the Master Informaiton Block (MIB), and then determines whether the system message is based on the received MIB. A change has occurred, and if a change has occurred, the system message is updated to the latest state.
  • MIB Master Informaiton Block
  • two methods for reading a new system broadcast message on the first user equipment side are provided, wherein, after directly reading the MIB, it is determined whether the system message changes, thereby updating the system message.
  • the method provides a new method for the invention, thereby increasing the feasibility of the scheme and at the same time improving the flexibility.
  • the associated channel of the PICH may include:
  • High speed shared control channel HS-SCCH High speed shared control channel HS-SCCH, HS-SCCH associated with PICH, or
  • the high speed physical downlink shared channel HS-PDSCH, HS-PDSCH is associated with PICH.
  • the associated channel of the PICH of the first user equipment may be an S-CCPCH for carrying data from the transport channels FACH and PCH, and configuration information such as codes and time slots used by the S-CCPCH are broadcast in the cell.
  • the physical layer can combine the data of one or more FACHs and one PCH on one CCTrCH according to the configuration, and then map the CCTrCH data according to the configuration. Go to one or more S-CCPCH physical channels.
  • the associated channel of the PICH of the first user equipment may also be an HS-SCCH, the PICH and the HS-SCCH have a specified timing relationship, the HS-SCCH carries a downlink channel of signaling information, and each user equipment has a maximum of four HS-SCCHs.
  • the HS-SCCH is associated with the HS-PDSCH, and the HS-DSCH for carrying the paging message is mapped to the HS-PDSCH, so that the HS-DSCH is associated with the PICH.
  • the associated channel is embodied as an S-CCPCH or an HS-PDSCH, or an HS-DSCH indirectly associated with the PICH, so that the solution is more feasible in practical applications, and can be different according to different situations. Selecting the associated channel further enhances the flexibility of the solution.
  • the embodiment of the present invention further provides an apparatus based on the message change processing method.
  • the meaning of the noun is the same as the method of the message change processing described above. For specific implementation details, refer to the description in the method embodiment.
  • the first determining module 601 is configured to determine a paging occasion of the first user equipment when the cell system broadcasts the message change;
  • the second determining module 602 is configured to determine that the bit of the paging indicator PI of the first user equipment is at least the spare bit in the PICH radio frame corresponding to the paging occasion determined by the first determining module 601. Or determining that the paging indicator PI of the first user equipment is a predefined PI, where the predefined PI bit is located in a paging indicator channel PICH radio frame corresponding to the paging occasion, where the pre- The defined PI is an indication indicated by the network side or agreed by the network side and the user equipment to indicate a system broadcast message change;
  • a setting module 603, configured to set a PI of the first user equipment determined by the second determining module 602 to a predetermined value
  • the first sending module 604 is configured to send the PI set by the setting module 603 when the first determining module 601 determines a paging occasion.
  • the first determining module 601 determines the paging occasion of the first user equipment, and the second determining module 602 determines that the bit of the paging indicator PI of the first user equipment is located in the first determining.
  • the paging time corresponding to the paging occasion determined by the module 601 indicates at least one of the spare bits in the channel PICH radio frame, or determines that the paging indicator PI of the first user equipment is a predefined PI, where the predefined PI bits
  • the bit is located in the paging indicator channel PICH radio frame corresponding to the paging occasion, and the predefined PI is an indication indicated by the network side or the network side and the user equipment for indicating a system broadcast message change, and the setting module 603 is to be the second.
  • the PI of the first user equipment determined by the determining module 602 is set to a predetermined value, and the first determining module 601 determines that the paging first sending module 604 sends the PI set by the setting module 603.
  • the PI for indicating the cell system message change is placed in the spare bit of the PICH radio frame or in a predefined bit.
  • the base station side passes the special PI direction.
  • a user equipment indicates a change of the system message, and the second user equipment is prevented from reading the notification message of the system message change multiple times in the first DRX period, so that the second user equipment saves its own power and improves the user experience.
  • the spare bit is the last 12 in the PICH radio frame. Bits.
  • the predefined PI bit is the PICH. At least one of the first 288 bits in the radio frame.
  • the spare bit is interpreted with the predefined PI bit, so that the operability of the solution in actual use is improved, and at the same time, the specific situation of the solution is specifically analyzed and increased. The feasibility of this program.
  • another embodiment of the apparatus for the message change processing in the embodiment of the present invention includes:
  • the first determining module 601 is configured to determine a paging occasion of the first user equipment when the cell system broadcasts the message change;
  • the second determining module 602 is configured to determine that the bit of the paging indicator PI of the first user equipment is at least the spare bit in the PICH radio frame corresponding to the paging occasion determined by the first determining module 601. Or determining that the paging indicator PI of the first user equipment is a predefined PI, where the predefined PI bit is located in a paging indicator channel PICH radio frame corresponding to the paging occasion, where the pre- The defined PI is an indication indicated by the network side or agreed by the network side and the user equipment to indicate a system broadcast message change;
  • a setting module 603, configured to set a PI of the first user equipment determined by the second determining module 602 to a predetermined value
  • the first sending module 604 is configured to: when the first determining module 601 determines a paging occasion, send the PI set by the setting module 603;
  • the first determining module 601 includes:
  • a first determining unit 6011 configured to determine, according to the identifier of the first user equipment, a length of a first discontinuous reception DRX cycle used by the first user equipment and a length of a second DRX cycle used by the second user equipment
  • the PI of the first user equipment is located in a frame number of the PICH radio frame, and the PI of the first user equipment is located in a frame number of the PICH radio frame indicating the paging occasion, where the second DRX period
  • the length is less than the length of the first DRX cycle.
  • FIG. 8 another embodiment of the apparatus for the message change processing in the embodiment of the present invention includes:
  • the first determining module 601 is configured to determine, when the cell system broadcasts a message change, the first user equipment Paging opportunity
  • the second determining module 602 is configured to determine that the bit of the paging indicator PI of the first user equipment is at least the spare bit in the PICH radio frame corresponding to the paging occasion determined by the first determining module 601. Or determining that the paging indicator PI of the first user equipment is a predefined PI, where the predefined PI bit is located in a paging indicator channel PICH radio frame corresponding to the paging occasion, where the pre- The defined PI is an indication indicated by the network side or agreed by the network side and the user equipment to indicate a system broadcast message change;
  • a setting module 603, configured to set a PI of the first user equipment determined by the second determining module 602 to a predetermined value
  • the first sending module 604 is configured to: when the first determining module 601 determines a paging occasion, send the PI set by the setting module 603;
  • the first determining module 601 includes:
  • a second determining unit 6012 configured to determine a frame number of the PICH radio frame where the PI of the first user equipment is located according to a paging timing calculation formula, where a PI of the first user equipment is located in the PICH radio frame The frame number indicates the paging occasion, and the paging timing calculation formula:
  • Paging Occasion indicates the paging occasion
  • IMSI is the international mobile subscriber identity code
  • mod indicates the modulo operation
  • div indicates the division operation
  • PBP is the paging block period
  • Frame Offset is the frame offset
  • DRX cycle length1 is the DRX length used by the first user equipment, that is, the length of the first DRX cycle
  • DRX cycle length2 is the DRX length used by the second user equipment. The length of the two DRX cycles, and the DRX cycle length2 is less than the DRX cycle length1.
  • two paging timing calculation formulas are specifically proposed, one of which is a method for calculating a paging occasion in the prior art, and the other is a new paging timing calculation formula constructed in the present scheme. This can greatly improve the operability of the program in practical applications.
  • another embodiment of the apparatus for the message change processing in the embodiment of the present invention includes:
  • the first determining module 601 is configured to determine, when the cell system broadcasts a message change, the first user equipment Paging opportunity
  • the second determining module 602 is configured to determine that the bit of the paging indicator PI of the first user equipment is at least the spare bit in the PICH radio frame corresponding to the paging occasion determined by the first determining module 601. Or determining that the paging indicator PI of the first user equipment is a predefined PI, where the predefined PI bit is located in a paging indicator channel PICH radio frame corresponding to the paging occasion, where the pre- The defined PI is an indication indicated by the network side or agreed by the network side and the user equipment to indicate a system broadcast message change;
  • a setting module 603, configured to set a PI of the first user equipment determined by the second determining module 602 to a predetermined value
  • the first sending module 604 is configured to: when the first determining module 601 determines a paging occasion, send the PI set by the setting module 603;
  • the first determining module 601 includes:
  • a second determining unit 6012 configured to determine a frame number of the PICH radio frame where the PI of the first user equipment is located according to a paging timing calculation formula, where a PI of the first user equipment is located in the PICH radio frame The frame number indicates the paging occasion, and the paging timing calculation formula:
  • Paging Occasion indicates the paging occasion
  • IMSI is the international mobile subscriber identity code
  • mod indicates the modulo operation
  • div indicates the division operation
  • PBP is the paging block period
  • Frame Offset is the frame offset
  • DRX cycle length1 is the DRX length used by the first user equipment, that is, the length of the first DRX cycle
  • DRX cycle length2 is the DRX length used by the second user equipment. The length of the two DRX cycles, and the DRX cycle length2 is less than the DRX cycle length1.
  • the second determining module 602 includes:
  • a third determining unit 6021 configured to determine, according to the number of paging indications and the identifier of the first user equipment, a number of spare bits of the PI of the first user equipment in the PICH radio frame, where The number of the paging indications is determined according to the number of spare bits of the PICH radio frame corresponding to the paging occasion of the first user equipment and the number of bits occupied by the PI.
  • another embodiment of the apparatus for the method for message change processing in the embodiment of the present invention includes:
  • the first determining module 601 is configured to determine a paging occasion of the first user equipment when the cell system broadcasts the message change;
  • the second determining module 602 is configured to determine that the bit of the paging indicator PI of the first user equipment is at least the spare bit in the PICH radio frame corresponding to the paging occasion determined by the first determining module 601. Or determining that the paging indicator PI of the first user equipment is a predefined PI, where the predefined PI bit is located in a paging indicator channel PICH radio frame corresponding to the paging occasion, where the pre- The defined PI is an indication indicated by the network side or agreed by the network side and the user equipment to indicate a system broadcast message change;
  • a setting module 603, configured to set a PI of the first user equipment determined by the second determining module 602 to a predetermined value
  • the first sending module 604 is configured to: when the first determining module 601 determines a paging occasion, send the PI set by the setting module 603;
  • the calculating module 605 is configured to calculate, according to the following alternate bit formula, that the second determining module 602 determines the number of spare bits of the PI of the first user equipment in the PICH radio frame:
  • V pi is a value calculated according to the identification number of the first user equipment and Np
  • SFN is the system frame number
  • Np represents the number of PIs in each PICH radio frame
  • Np' represents the number of PIs transmitted by the first user equipment through the spare bits.
  • determining the number of the spare bit in the PICH radio frame corresponding to the frame number of the PI of the first user equipment according to the spare bit formula is important for the implementation of the scheme, and is included for the PI. Different calculations can be made for different bit positions, which is practical for the implementation of the program. The benefits of a wide range of applications.
  • another embodiment of the apparatus for the message change processing in the embodiment of the present invention includes:
  • the first determining module 601 is configured to determine, when the cell system broadcasts a message change, the first user equipment Paging opportunity
  • the second determining module 602 is configured to determine that the bit of the paging indicator PI of the first user equipment is at least the spare bit in the PICH radio frame corresponding to the paging occasion determined by the first determining module 601. Or determining that the paging indicator PI of the first user equipment is a predefined PI, where the predefined PI bit is located in a paging indicator channel PICH radio frame corresponding to the paging occasion, where the pre- The defined PI is an indication indicated by the network side or agreed by the network side and the user equipment to indicate a system broadcast message change;
  • a setting module 603, configured to set a PI of the first user equipment determined by the second determining module 602 to a predetermined value
  • the first sending module 604 is configured to: when the first determining module 601 determines a paging occasion, send the PI set by the setting module 603;
  • the calculating module 605 is configured to calculate, according to the following alternate bit formula, that the second determining module 602 determines the number of spare bits of the PI of the first user equipment in the PICH radio frame:
  • V pi is a value calculated according to the identification number of the first user equipment and Np
  • SFN is the system frame number
  • Np represents the number of PIs in each PICH radio frame
  • Np' represents the number of PIs transmitted by the first user equipment through the spare bits
  • the second sending module 606 is configured to send, after the first sending module 604 sends the PI, a paging message on the associated channel of the PICH of the PI of the first user equipment, to notify the first user equipment that the system broadcast message occurs. change.
  • a method for the base station to notify the first user equipment when the cell system message is changed is provided, so that the solution is more operable in the implementation process, and at the same time, for the first user equipment
  • the information of the cell system message change can be received through the relevant channel, so that the first device reads the message more time-sensitive.
  • the associated channel of the PICH of the PI of the first user equipment include:
  • S-CCPCH Auxiliary common control physical channel S-CCPCH, said S-CCPCH associated with said PICH, or
  • High speed shared control channel HS-SCCH the HS-SCCH is associated with the PICH, or
  • a high speed physical downlink shared channel HS-PDSCH the HS-PDSCH being associated with the PICH.
  • the associated channel is embodied as an S-CCPCH or an HS-PDSCH, or an HS-DSCH indirectly associated with the PICH, so that the solution is more feasible in practical applications, and can be different according to different situations. Selecting the associated channel further enhances the flexibility of the solution.
  • an embodiment of an apparatus for message change processing in an embodiment of the present invention includes:
  • a determining module 701, configured to determine a paging occasion of the first user equipment
  • the monitoring module 702 is configured to monitor the corresponding paging indicator channel PICH on the paging occasion determined by the first determining module 701;
  • the parsing module 703 is configured to parse at least one of the spare bits in the PICH radio frame monitored by the snooping module 702 and obtain a predetermined value of the PI, or parse the pre-defined PI in the PICH radio frame and obtain a predetermined value of the PI,
  • the predefined PI is an indication indicated by the network side or agreed by the network side and the user equipment to indicate a system broadcast message change;
  • the instructing module 704 is configured to indicate that the system broadcast message has been changed when the predetermined value of the PI obtained by the parsing module 703 is 1.
  • the determining module 701 determines the paging occasion of the first user equipment
  • the listening module 702 monitors the corresponding paging indicator channel PICH at the paging occasion determined by the first determining module 701
  • the parsing module 703 analyzes the listening module 702 to monitor.
  • the instruction for instructing the system to broadcast the message change agreed with the user equipment.
  • the indication module 704 instructs the system broadcast message to be changed.
  • the PI for indicating the cell system message change is placed in the spare bit of the PICH radio frame or in a predefined bit.
  • the base station side passes the special PI direction.
  • a user equipment indicates a change of the system message, and the second user equipment is prevented from reading the notification message of the system message change multiple times in the first DRX period, so that the second user equipment saves its own power and improves the user experience.
  • the spare bit is the last 12 in the PICH radio frame. Bits.
  • the bit of the predefined PI is the PICH wireless. At least one of the first 288 bits in the frame.
  • the spare bit is interpreted with the predefined PI bit, so that the operability of the solution in actual use is improved, and at the same time, the specific situation of the solution is specifically analyzed and increased. The feasibility of this program.
  • another embodiment of the apparatus for message change processing in the embodiment of the present invention includes:
  • a determining module 701, configured to determine a paging occasion of the first user equipment
  • the monitoring module 702 is configured to monitor the corresponding paging indicator channel PICH on the paging occasion determined by the first determining module 701;
  • the parsing module 703 is configured to parse at least one of the spare bits in the PICH radio frame monitored by the snooping module 702 and obtain a predetermined value of the PI, or parse the pre-defined PI in the PICH radio frame and obtain a predetermined value of the PI,
  • the predefined PI is an indication indicated by the network side or agreed by the network side and the user equipment to indicate a system broadcast message change;
  • the indicating module 704 is configured to: when the predetermined value of the PI obtained by the parsing module 703 is 1, to indicate that the system broadcast message has been changed;
  • the determining module 701 includes:
  • a first determining unit 7011 configured to determine, according to the identifier of the first user equipment, a length of a first discontinuous reception DRX cycle used by the first user equipment and a length of a second DRX cycle used by the second user equipment
  • the PI of the first user equipment is located in a frame number of the PICH radio frame, and the PI of the first user equipment is located in a frame number of the PICH radio frame indicating the paging occasion, where the second DRX period
  • the length is less than the length of the first DRX cycle.
  • FIG. 14 another embodiment of the apparatus for message change processing in the embodiment of the present invention includes:
  • a determining module 701, configured to determine a paging occasion of the first user equipment
  • the monitoring module 702 is configured to monitor the corresponding paging indicator channel PICH on the paging occasion determined by the first determining module 701;
  • the parsing module 703 is configured to parse at least one of the spare bits in the PICH radio frame monitored by the snooping module 702 and obtain a predetermined value of the PI, or parse the pre-defined PI in the PICH radio frame and obtain a predetermined value of the PI,
  • the predefined PI is an indication indicated by the network side or agreed by the network side and the user equipment to indicate a system broadcast message change;
  • the indicating module 704 is configured to: when the predetermined value of the PI obtained by the parsing module 703 is 1, to indicate that the system broadcast message has been changed;
  • the determining module 701 includes:
  • a second determining unit 7012 configured to determine a frame number of the PICH radio frame where the PI of the first user equipment is located according to a paging timing calculation formula, where a PI of the first user equipment is located in the PICH radio frame The frame number indicates the paging occasion, and the paging timing calculation formula:
  • Paging Occasion indicates the paging occasion
  • IMSI is the international mobile subscriber identity code
  • mod indicates the modulo operation
  • div indicates the division operation
  • PBP is the paging block period
  • Frame Offset is the frame offset
  • DRX cycle length1 is the DRX length used by the first user equipment, that is, the length of the first DRX cycle
  • DRX cycle length2 is the DRX length used by the second user equipment. The length of the two DRX cycles, and the DRX cycle length2 is less than the DRX cycle length1.
  • two paging timing calculation formulas are specifically proposed, one of which is a method for calculating a paging occasion in the prior art, and the other is a new paging timing calculation formula constructed in the present scheme. This can greatly improve the operability of the program in practical applications.
  • another embodiment of the apparatus for message change processing in the embodiment of the present invention includes:
  • a determining module 701, configured to determine a paging occasion of the first user equipment
  • the monitoring module 702 is configured to monitor the corresponding paging indicator channel PICH on the paging occasion determined by the first determining module 701;
  • the parsing module 703 is configured to parse at least one of the spare bits in the PICH radio frame monitored by the intercepting module 702 and obtain a predetermined value of the PI, or parse the predefined PI in the PICH radio frame and obtain the PI a predetermined value of the PI, where the predefined PI is an indication indicated by the network side or agreed by the network side and the user equipment to indicate a system broadcast message change;
  • the indicating module 704 is configured to: when the predetermined value of the PI obtained by the parsing module 703 is 1, to indicate that the system broadcast message has been changed;
  • the determining module 701 includes:
  • a second determining unit 7012 configured to determine a frame number of the PICH radio frame where the PI of the first user equipment is located according to a paging timing calculation formula, where a PI of the first user equipment is located in the PICH radio frame The frame number indicates the paging occasion, and the paging timing calculation formula:
  • Paging Occasion indicates the paging occasion
  • IMSI is the international mobile subscriber identity code
  • mod indicates the modulo operation
  • div indicates the division operation
  • PBP is the paging block period
  • Frame Offset is the frame offset
  • DRX cycle length1 is the DRX length used by the first user equipment, that is, the length of the first DRX cycle
  • DRX cycle length2 is the DRX length used by the second user equipment. The length of the two DRX cycles, and the DRX cycle length2 is less than the DRX cycle length1;
  • the parsing module 703 includes:
  • the first parsing unit 7031 is configured to parse the number of the spare bit in the PICH radio frame of the PI of the first user equipment according to the number of paging indications and the identifier of the first user equipment, where The number of the paging indications is determined according to the number of spare bits of the PICH radio frame corresponding to the paging occasion of the first user equipment and the number of bits occupied by the PI.
  • FIG. 16 another embodiment of the apparatus for message change processing in the embodiment of the present invention includes:
  • a determining module 701, configured to determine a paging occasion of the first user equipment
  • the monitoring module 702 is configured to monitor the corresponding paging indicator channel PICH on the paging occasion determined by the first determining module 701;
  • the parsing module 703 is configured to parse at least one of the spare bits in the PICH radio frame monitored by the intercepting module 702 and obtain a predetermined value of the PI, or parse the predefined PI in the PICH radio frame and obtain the PI a predetermined value of the PI, where the predefined PI is an indication indicated by the network side or agreed by the network side and the user equipment to indicate a system broadcast message change;
  • the indicating module 704 is configured to: when the predetermined value of the PI obtained by the parsing module 703 is 1, to indicate that the system broadcast message has been changed;
  • the calculation module 705 is configured to calculate, according to the following alternate bit formula, the number of the spare bit of the PI of the first user equipment parsed by the parsing module 703 in the PICH radio frame:
  • V PI is calculated according to the identification number of the first user equipment and the value of Np
  • SFN represents the system frame number
  • Np represents the number of PIs in each PICH radio frame
  • Np' represents the number of PIs transmitted by the first user equipment through the spare bits
  • the parsing module 703 includes:
  • the first parsing unit 7031 is configured to parse the number of the spare bit in the PICH radio frame of the PI of the first user equipment according to the number of paging indications and the identifier of the first user equipment, where The number of the paging indications is determined according to the number of spare bits of the PICH radio frame corresponding to the paging occasion of the first user equipment and the number of bits occupied by the PI.
  • determining the number of the spare bit in the PICH radio frame corresponding to the frame number of the PI of the first user equipment according to the spare bit formula is important for the implementation of the scheme, and is included for the PI. Different calculations can be made for different bit positions, which is practical for the implementation of the program. The benefits of a wide range of applications.
  • FIG. 17 another embodiment of the apparatus for message change processing in the embodiment of the present invention includes:
  • a determining module 701, configured to determine a paging occasion of the first user equipment
  • the monitoring module 702 is configured to monitor the corresponding paging indicator channel PICH on the paging occasion determined by the first determining module 701;
  • the parsing module 703 is configured to parse at least one of the spare bits in the PICH radio frame monitored by the snooping module 702 and obtain a predetermined value of the PI, or parse the pre-defined PI in the PICH radio frame and obtain a predetermined value of the PI,
  • the predefined PI is an indication indicated by the network side or agreed by the network side and the user equipment to indicate a system broadcast message change;
  • the indicating module 704 is configured to: when the predetermined value of the PI obtained by the parsing module 703 is 1, Instructing the system broadcast message to change;
  • the calculation module 705 is configured to calculate, according to the following alternate bit formula, the number of the spare bit of the PI of the first user equipment parsed by the parsing module 703 in the PICH radio frame:
  • V PI is calculated according to the identification number of the first user equipment and the value of Np
  • SFN represents the system frame number
  • Np represents the number of PIs in each PICH radio frame
  • Np' represents the number of PIs transmitted by the first user equipment through the spare bits
  • the receiving module 706 is configured to: after the indication module 704 indicates that the system broadcast message is changed, receive a paging message from the associated channel of the PICH, and perform a system broadcast message change according to the paging message; or
  • the parsing module 703 includes:
  • the first parsing unit 7031 is configured to parse the number of the spare bit in the PICH radio frame of the PI of the first user equipment according to the number of paging indications and the identifier of the first user equipment, where The number of the paging indications is determined according to the number of spare bits of the PICH radio frame corresponding to the paging occasion of the first user equipment and the number of bits occupied by the PI.
  • two methods for reading a new system broadcast message on the first user equipment side are provided, wherein, after directly reading the MIB, it is determined whether the system message changes, thereby updating the system message.
  • the method provides a new method for the invention, thereby increasing the feasibility of the scheme and at the same time improving the flexibility.
  • the associated channel of the PICH includes:
  • S-CCPCH Auxiliary common control physical channel S-CCPCH, said S-CCPCH associated with said PICH, or
  • High speed shared control channel HS-SCCH the HS-SCCH is associated with the PICH, or
  • a high speed physical downlink shared channel HS-PDSCH the HS-PDSCH being associated with the PICH.
  • the associated channel is embodied as an S-CCPCH or an HS-PDSCH, or an HS-DSCH indirectly associated with the PICH, so that the solution is in practical application. It is more feasible, and the associated channel can be selected according to different situations, which further enhances the flexibility of the solution.
  • an embodiment of the present invention further provides a system for message change processing, including: a base station 1801 and a user equipment 1802;
  • the base station 1801 is configured to: when the cell system broadcast message changes, the base station 1801 determines a paging occasion of the first user equipment 1802; and determine that a bit of the paging indication PI of the first user equipment 1802 is located at the paging occasion Corresponding paging indicator channel at least one of the spare bits in the PICH radio frame, or determining that the paging indicator PI of the first user equipment 1802 is a predefined PI, wherein the predefined PI bits are located in the Paging timing corresponding to the paging indicator channel PICH radio frame, the predefined PI is an indication indicated by the network side or agreed by the network side and the user equipment to indicate a system broadcast message change; the first user is to be The PI of the device 1802 is set to a predetermined value; the base station 1801 transmits the PI at the paging occasion.
  • the user equipment 1802 is configured to: the user equipment 1802 determines a paging occasion of the first user equipment 1802; the user equipment 1802 monitors a paging indicator channel PICH corresponding to the paging occasion; and parses at least a spare bit in the PICH radio frame. Obtaining a predetermined value of the PI together, or parsing a predefined PI in the PICH radio frame and acquiring a predetermined value of the PI, where the predefined PI is indicated by the network side or agreed by the network side and the user equipment for indicating the system. An indication of a broadcast message change; when the predetermined value of the PI is 1, the system broadcast message is indicated to have changed.
  • the PI for indicating the cell system message change is placed in the spare bit of the PICH radio frame or in a predefined bit.
  • the base station side passes the special PI direction.
  • a user equipment indicates a change of the system message, and the second user equipment is prevented from reading the notification message of the system message change multiple times in the first DRX period, so that the second user equipment saves its own power and improves the user experience.
  • FIG. 19 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • the base station 1900 may generate a large difference due to different configurations or performances, and may include one or more central processing units (CPU) 1922 (for example, One or more processors) and memory 1932, one or more storage media 1930 that store application 1942 or data 1944 (eg, one or one storage device in Shanghai).
  • the memory 1932 and the storage medium 1930 may be short-term storage or persistent storage.
  • the program stored on the storage medium 1930 may include one or more modules (The illustration is not labeled), each module can include a series of instruction operations on the server.
  • central processor 1922 can be configured to communicate with storage medium 1930, which performs a series of instruction operations in storage medium 1930.
  • Base station 1900 can also include one or more power supplies 1926, one or more wired or wireless network interfaces 1950, one or more input and output interfaces 1958, and/or one or more operating systems 1941, such as Windows ServerTM, Mac OS. XTM, UnixTM, LinuxTM, FreeBSDTM and more.
  • operating systems 1941 such as Windows ServerTM, Mac OS. XTM, UnixTM, LinuxTM, FreeBSDTM and more.
  • the central processing unit 1922 included in the base station further has the following functions:
  • the bit of the paging indicator PI of the first user equipment is at least one of the spare bits in the PICH radio frame corresponding to the paging occasion corresponding to the paging occasion, or determining that the paging indicator PI of the first user equipment is a predefined PI, wherein the predefined PI bit is located in a paging indicator channel PICH radio frame corresponding to the paging occasion, and the predefined PI is indicated by the network side or the network side and the user equipment An agreed indication of a system broadcast message change;
  • the wired or wireless network interface 1950 or the input/output interface 1958 included in the base station also has the following functions:
  • the PI is transmitted at the paging occasion.
  • the steps performed by the base station in the above embodiments may be based on the base station structure shown in FIG.
  • the embodiment of the present invention further provides a user equipment. As shown in FIG. 20, for the convenience of description, only parts related to the embodiment of the present invention are shown. For details that are not disclosed, refer to the method part of the embodiment of the present invention. .
  • the user equipment may be any terminal device including a mobile phone, a tablet computer, a PDA (Personal Digital Assistant), a POS (Point of Sales), a vehicle-mounted computer, and the like:
  • FIG. 20 is a block diagram showing a partial structure of a mobile phone related to a terminal provided by an embodiment of the present invention.
  • the mobile phone includes: a radio frequency (RF) circuit 2010, a memory 2020, an input unit 2030, a display unit 2040, a sensor 2050, an audio circuit 2060, a wireless fidelity (WiFi) module 2070, and a processor 2080. And power supply 2090 and other components.
  • RF radio frequency
  • the RF circuit 2010 can be used for receiving and transmitting signals during the transmission or reception of information or during a call. Specifically, after receiving the downlink information of the base station, the processor 2080 processes the data. In addition, the uplink data is designed to be sent to the base station. Generally, RF circuit 2010 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, the RF circuit 2010 can also communicate with the network and other devices through wireless communication. The above wireless communication may use any communication standard or protocol, including but not limited to Global System of Mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (Code Division). Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), E-mail, Short Messaging Service (SMS), and the like.
  • GSM Global System of Mobile communication
  • GPRS General Packet Radio Service
  • CDMA Code
  • the memory 2020 can be used to store software programs and modules, and the processor 2080 executes various functional applications and data processing of the mobile phone by running software programs and modules stored in the memory 2020.
  • the memory 2020 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may be stored according to Data created by the use of the mobile phone (such as audio data, phone book, etc.).
  • memory 2020 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
  • the input unit 2030 can be configured to receive input numeric or character information and to generate key signal inputs related to user settings and function controls of the handset.
  • the input unit 2030 may include a touch panel 2031 and other input devices 2032.
  • the touch panel 2031 also referred to as a touch screen, can collect touch operations on or near the user (such as the user using a finger, a stylus, or the like on the touch panel 2031 or near the touch panel 2031. Operation), and drive the corresponding connecting device according to a preset program.
  • the touch panel 2031 may include two parts: a touch detection device and a touch controller.
  • the touch detection device detects the touch orientation of the user, and detects a signal brought by the touch operation, and transmits a signal to the touch controller; the touch controller receives the touch from the touch detection device.
  • the information is touched and converted into contact coordinates, sent to processor 2080, and can receive commands from processor 2080 and execute them.
  • the touch panel 2031 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves.
  • the input unit 2030 may also include other input devices 2032.
  • other input devices 2032 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, joysticks, and the like.
  • the display unit 2040 can be used to display information input by the user or information provided to the user as well as various menus of the mobile phone.
  • the display unit 2040 can include a display panel 2041.
  • the display panel 2041 can be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.
  • the touch panel 2031 can cover the display panel 2041. When the touch panel 2031 detects a touch operation on or near the touch panel 2031, the touch panel 2031 transmits to the processor 2080 to determine the type of the touch event, and then the processor 2080 according to the touch event. The type provides a corresponding visual output on display panel 2041.
  • touch panel 2031 and the display panel 2041 are used as two independent components to implement the input and input functions of the mobile phone in FIG. 20, in some embodiments, the touch panel 2031 and the display panel 2041 may be integrated. Realize the input and output functions of the phone.
  • the handset can also include at least one type of sensor 2050, such as a light sensor, motion sensor, and other sensors.
  • the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display panel 2041 according to the brightness of the ambient light, and the proximity sensor may close the display panel 2041 and/or when the mobile phone moves to the ear. Or backlight.
  • the accelerometer sensor can detect the magnitude of acceleration in all directions (usually three axes). When it is stationary, it can detect the magnitude and direction of gravity.
  • the mobile phone can be used to identify the gesture of the mobile phone (such as horizontal and vertical screen switching, related Game, magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for the mobile phone can also be configured with gyroscopes, barometers, hygrometers, thermometers, infrared sensors and other sensors, no longer Narration.
  • the gesture of the mobile phone such as horizontal and vertical screen switching, related Game, magnetometer attitude calibration
  • vibration recognition related functions such as pedometer, tapping
  • the mobile phone can also be configured with gyroscopes, barometers, hygrometers, thermometers, infrared sensors and other sensors, no longer Narration.
  • An audio circuit 2060, a speaker 2061, and a microphone 2062 can provide an audio interface between the user and the handset.
  • the audio circuit 2060 can transmit the converted electrical data of the received audio data to the speaker 2061, and convert it into a sound signal output by the speaker 2061; on the other hand, the microphone 2062 converts the collected sound signal into an electrical signal, by the audio circuit 2060. Convert to audio data after receiving, then audio After the data output processor 2080 processes, it is sent via RF circuitry 2010 to, for example, another handset, or audio data is output to memory 2020 for further processing.
  • WiFi is a short-range wireless transmission technology.
  • the mobile phone can help users to send and receive emails, browse web pages and access streaming media through the WiFi module 2070. It provides users with wireless broadband Internet access.
  • FIG. 20 shows the WiFi module 2070, it can be understood that it does not belong to the essential configuration of the mobile phone, and may be omitted as needed within the scope of not changing the essence of the invention.
  • the processor 2080 is a control center for the handset that connects various portions of the entire handset using various interfaces and lines, by executing or executing software programs and/or modules stored in the memory 2020, and invoking data stored in the memory 2020, executing The phone's various functions and processing data, so that the overall monitoring of the phone.
  • the processor 2080 may include one or more processing units; preferably, the processor 2080 may integrate an application processor and a modem processor, where the application processor mainly processes an operating system, a user interface, an application, and the like.
  • the modem processor primarily handles wireless communications. It will be appreciated that the above described modem processor may also not be integrated into the processor 2080.
  • the mobile phone also includes a power supply 2090 (such as a battery) for powering various components.
  • a power supply 2090 (such as a battery) for powering various components.
  • the power supply can be logically coupled to the processor 2080 through a power management system to manage functions such as charging, discharging, and power management through the power management system.
  • the mobile phone may further include a camera, a Bluetooth module, and the like, and details are not described herein again.
  • the processor 2080 included in the user equipment further has the following functions:
  • the disclosed system, apparatus, and method 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 the actual implementation may have another
  • the manner of division, such as 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 above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention which is essential or contributes to the prior art, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) 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. .

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Abstract

本发明实施例公开了一种消息变更处理的方法，包括：将小区系统广播消息变更时，确定第一用户设备的寻呼时机，确定第一用户设备的寻呼指示（PI）的比特位位于寻呼时机对应的寻呼指示信道（PICH）无线帧内的备用比特位至少之一，或，确定第一用户设备的寻呼指示（PI）为预定义的PI，其中预定义的PI的比特位位于寻呼时机对应的PICH无线帧内，将第一用户设备的PI设置为预定值，在寻呼时机发送PI。本发明实施例还提供一种消息变更处理的装置及系统。本发明实施例能够避免第二用户设备在第一非接收（DRX）周期内多次读取系统消息变更的通知消息，从而使得第二用户设备节省自身的电量，提升用户的使用体验。

Description

一种消息变更处理的方法、装置及系统 技术领域
本发明涉及通信领域，尤其涉及一种消息变更处理的方法、装置及系统。
背景技术
在通用移动通讯系统(UMTS，Universal Mobile Telecommunications System)中，网络侧与终端侧通过空中接口相联。当网络侧由于某种原因需要通知终端时，可以通过寻呼来指示终端，如系统消息变更或终端被呼叫等，终端则通过周期性听取寻呼从而及时得到网络侧的通知。寻呼的基本过程与两个信道相关，分别是寻呼指示信道(PICH，paging Indication Channel)和寻呼控制信道(PCCH，Paging Control Channel)，即用户设备(UE，User Equipment)从PICH得到寻呼指示后，根据自已状态及配置需要听取PCCH信道或者BCCH信道，PCCH信道可以映射到辅助公用控制物理信道(SCCPCH，Secondary Common Control Physical Channel),而BCCH则可以映射到前向接入信道(FACH，Forward Access Channel)或者高速物理下行共享信道(HS-DSCH，High Speed Downlink Shared Channel)上，用户设备根据自身状态和配置进行选择。
现有技术中，当系统消息发送改变时，网络为了通知空闲状态、小区寻呼信道(Cell_PCH，Cell Paging Channel)状态、路由更新区寻呼信道(URA_PCH，UTRAN Registration Area Paging Channel)状态和小区前向接入信道(CELL_FACH，Forward Access Channel)状态的所有用户设备，需要在整个非连续接收(DRX，discontinuous reception)周期的所有的寻呼时机上都发送寻呼指示(PI，Paging Indication)，且将所有的PI设置为1，确保在一个DRX周期内所有的用户设备都能接收后续的消息。而当用户设备获得设置为1的该PI后，会接收通知消息寻呼类型1(PAGING TYPE 1)或系统信息变更指示(SYSTEM INFORMATION CHANGE INDICATION)，根据所接收到的通知消息内包含的信息元素(IE，Information Element)“广播控制信道变更信息”(BCCH modification info，Broadcast Control Channel modification information)的内容，判断是否读取系统消息。
然而每个用户设备都会在每个DRX周期内读取PI指示一次，如果PI的 值为1时，则需要接收相应的通知消息，这些动作都会使得用户设备的电池产生消耗。当系统消息发生改变时，网络侧会在整个DRX周期期间重复发送变更通知给用户设备，请参阅图1，在没有引入长DRX周期时，系统变更信息在第一个DRX周期已经全部通知了所有的用户设备，所以在随后的第二个DRX周期内便不再发送PI，用户设备也就不会接收相应的通知消息。当为某类第一用户设备引入长DRX周期(比第二用户设备的DRX周期长，第二用户设备的DRX周期称之为短DRX周期)时，为了使所有的第一用户设备都接收到系统变更信息，需要在整个长DRX周期内发送设置为1的PI指示，由于PI指示有限，第二用户设备和新的用户设备会共享PI信息，因此第二用户设备会在后续短周期时再次接收到了该PI指示，进而再次接收通知消息，这些通知消息指示系统消息变更的内容第二用户设备已经在第一个DRX周期收到了，再次读取会导致第二用户设备耗费了更多的电池能量。
发明内容
本发明实施例提供了一种消息变更处理的方法，可以避免用户设备在长DRX周期内多次读取系统消息变更的通知消息，从而使得用户设备节省自身的电量，提升用户的使用体验。
本发明第一方面提供一种消息变更处理的方法，包括：
当小区系统广播消息变更时，确定第一用户设备的寻呼时机；
确定第一用户设备的寻呼指示PI的比特位位于所述寻呼时机对应的寻呼指示信道PICH无线帧内的备用比特位至少之一，或，确定第一用户设备的寻呼指示PI为预定义的PI，其中所述预定义的PI的比特位位于所述寻呼时机对应的寻呼指示信道PICH无线帧内，所述预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示；
将所述第一用户设备的PI设置为预定值；
在所述寻呼时机发送所述PI。
结合第一方面，在第一种可能的实现方式中，所述备用比特位为所述PICH无线帧中最后12个比特。
结合第一方面，在第二种可能的实现方式中，所述预定义的PI的比特位为所述PICH无线帧中前288个比特至少之一。
结合第一方面，在第三种可能的实现方式中，所述确定第一用户设备的寻呼时机，包括：
根据所述第一用户设备的识别码，所述第一用户设备使用的第一非连续接收DRX周期的长度和第二用户设备使用的第二DRX周期的长度确定所述第一用户设备的PI位于所述PICH无线帧的帧号，所述第一用户设备的PI位于所述PICH无线帧的帧号指示所述寻呼时机，其中，所述第二DRX周期的长度小于第一DRX周期的长度。
结合第一方面、第一方面第一至第三种可能的实现方式中的任意一种，在第四种可能的实现方式中，所述确定第一用户设备的寻呼时机，包括：
根据如下寻呼时机计算公式，确定所述第一用户设备的PI位于的所述PICH无线帧的帧号，所述第一用户设备的PI位于所述PICH无线帧的帧号指示所述寻呼时机，所述寻呼时机计算公式：
Paging Occasion＝{IMSI mod(DRX cycle length2 div PBP)}*PBP+n*DRX cycle length1+Frame Offset
其中，Paging Occasion表示寻呼时机，IMSI为国际移动用户识别码，mod表示取模运算，div表示除法运算，PBP为寻呼块周期，n是小区系统帧号且n＝0,1,2…SFN，Frame Offset为帧偏移量，DRX cycle length1表示为第一用户设备使用的DRX长度，即为第一DRX周期的长度，DRX cycle length2表示为第二用户设备使用的DRX长度，即为第二DRX周期的长度，且DRX cycle length2小于DRX cycle length1。
结合第一方面、第一方面第一至第四种可能的实现方式中的任意一种，在第五种可能的实现方式中，所述确定第一用户设备的寻呼指示PI的比特位位于所述寻呼时机对应的寻呼指示信道PICH无线帧内的备用比特位至少之一，包括：
根据寻呼指示的个数以及所述第一用户设备的识别码确定所述第一用户设备的PI在所述PICH无线帧中的备用比特位的编号，其中，所述寻呼指示的个数根据所述第一用户设备的寻呼时机对应的PICH无线帧的备用比特位个数和所述PI所占的比特位个数确定。
结合第一方面，在第六种可能的实现方式中，所述方法还包括：
根据如下备用比特位公式计算所述第一用户设备的PI在PICH无线帧中的备用比特位的编号：
Figure PCTCN2015075131-appb-000001
其中，q表示所述第一用户设备的PI在PICH无线帧中的备用比特位的编号，Vpi根据所述第一用户设备的识别号与Np计算得到的值，SFN表示系统帧号，mod表示取模运算，Np表示每个PICH无线帧内PI的个数，Np’表示所述第一用户设备通过备用比特位发射的PI个数。
结合第一方面、第一方面第一至第六种可能的实现方式种的任意一种，在第七种可能的实现方式中，所述方法还包括：
在所述第一用户设备的PI的PICH的关联信道上发送寻呼消息，以通知所述第一用户设备系统广播消息发生了变更。
结合第一方面第七种实现方式，在第八种可能的实现方式中，所述第一用户设备的PI的PICH的关联信道，包括：
辅助公用控制物理信道S-CCPCH，所述S-CCPCH与所述PICH关联，或
高速共享控制信道HS-SCCH，所述HS-SCCH与所述PICH关联，或
高速物理下行链路共享信道HS-PDSCH，所述HS-PDSCH与所述PICH关联。
本发明第二方面提供一种消息变更处理的方法，其特征在于，包括：
确定第一用户设备的寻呼时机；
监听所述寻呼时机对应的寻呼指示信道PICH；
解析PICH无线帧内的备用比特位至少之一并获取PI的预定值，或，解析PICH无线帧内预定义的PI并获取PI的预定值，所述预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示；
当所述PI的预定值为1时，则指示系统广播消息发生了变更。
结合第二方面，在第一种可能的实现方式中，所述备用比特位为所述PICH无线帧中最后12个比特。
结合第二方面，在第二种可能的实现方式中，所述预定义的PI的比特位为所述PICH无线帧中前288个比特至少之一。
结合第二方面，在第三种可能的实现方式中，所述确定第一用户设备的寻 呼时机，包括：
根据所述第一用户设备的识别码，所述第一用户设备使用的第一非连续接收DRX周期的长度和第二用户设备使用的第二DRX周期的长度确定所述第一用户设备的PI位于所述PICH无线帧的帧号，所述第一用户设备的PI位于所述PICH无线帧的帧号指示所述寻呼时机，其中，所述第二DRX周期的长度小于第一DRX周期的长度。
结合第二方面、第二方面第一至第三种可能的实现方式中的任意一种，在第四种可能的实现方式中，所述确定第一用户设备的寻呼时机，包括：
根据如下寻呼时机计算公式，确定所述第一用户设备的PI位于的所述PICH无线帧的帧号，所述第一用户设备的PI位于所述PICH无线帧的帧号指示所述寻呼时机，所述寻呼时机计算公式：
Paging Occasion＝{IMSI mod(DRX cycle length2 div PBP)}*PBP+n*DRX cycle length1+Frame Offset
其中，Paging Occasion表示寻呼时机，IMSI为国际移动用户识别码，mod表示取模运算，div表示除法运算，PBP为寻呼块周期，n是小区系统帧号且n＝0,1,2…SFN，Frame Offset为帧偏移量，DRX cycle length1表示为第一用户设备使用的DRX长度，即为第一DRX周期的长度，DRX cycle length2表示为第二用户设备使用的DRX长度，即为第二DRX周期的长度，且DRX cycle length2小于DRX cycle length1。
结合第二方面、第二方面第一至第四种可能的实现方式中的任意一种，在第五种可能的实现方式中，所述解析PICH无线帧内的备用比特位至少之一，包括：
根据寻呼指示的个数以及所述第一用户设备的识别码解析所述第一用户设备的PI在所述PICH无线帧中的备用比特位的编号，其中，所述寻呼指示的个数根据所述第一用户设备的寻呼时机对应的PICH无线帧的备用比特位个数和所述PI所占的比特位个数确定。
结合第二方面，在第六种可能的实现方式中，其特征在于，所述方法还包括：
根据如下备用比特位公式计算所述第一用户设备的PI在PICH无线帧中 的备用比特位的编号：
Figure PCTCN2015075131-appb-000002
其中，q表示所述第一用户设备的PI在PICH无线帧中的备用比特位的编号，VPI根据所述第一用户设备的识别号与Np计算得到的值，SFN表示系统帧号，mod表示取模运算，Np表示每个PICH无线帧内PI的个数，Np’表示所述第一用户设备通过备用比特位发射的PI个数。
结合第二方面、第二方面第一至第六种可能的实现方式中的任意一种，在第七种可能的实现方式中，其特征在于，所述方法还包括：
从所述PICH的关联信道上接收寻呼消息，并根据所述寻呼消息进行系统广播消息变更；或，
直接获取变更的系统广播消息。
结合第二方面第七种实现方式，在第八种可能的实现方式中，所述PICH的关联信道包括：
辅助公用控制物理信道S-CCPCH，所述S-CCPCH与所述PICH关联，或
高速共享控制信道HS-SCCH，所述HS-SCCH与所述PICH关联，或
高速物理下行链路共享信道HS-PDSCH，所述HS-PDSCH与所述PICH关联。
本发明第三方面提供一种消息变更处理的装置，其特征在于，包括：
第一确定模块，用于当小区系统广播消息变更时，确定第一用户设备的寻呼时机；
第二确定模块，用于确定第一用户设备的寻呼指示PI的比特位位于所述第一确定模块确定的寻呼时机对应的寻呼指示信道PICH无线帧内的备用比特位至少之一，或，确定第一用户设备的寻呼指示PI为预定义的PI，其中所述预定义的PI的比特位位于所述寻呼时机对应的寻呼指示信道PICH无线帧内，所述预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示；；
设置模块，用于将所述第二确定模块确定的所述第一用户设备的PI设置为预定值；
第一发送模块，用于在所述第一确定模块确定寻呼时机发送所述设置模块 设置的PI。
结合第三方面，在第一种可能的实现方式中，所述备用比特位为所述PICH无线帧中最后12个比特。
结合第三方面，在第二种可能的实现方式中，所述预定义的PI的比特位为所述PICH无线帧中前288个比特至少之一。
结合三方面，在第三种可能的实现方式中，所述第一确定模块包括：
第一确定单元，用于根据所述第一用户设备的识别码，所述第一用户设备使用的第一非连续接收DRX周期的长度和第二用户设备使用的第二DRX周期的长度确定所述第一用户设备的PI位于所述PICH无线帧的帧号，所述第一用户设备的PI位于所述PICH无线帧的帧号指示所述寻呼时机，其中，所述第二DRX周期的长度小于第一DRX周期的长度。
结合第三方面、第三方面第一至第三种可能的实现方式种的任意一种，在第四种可能的实现方式中，所述第一确定模块包括：
第二确定单元，用于根据如下寻呼时机计算公式，确定所述第一用户设备的PI位于的所述PICH无线帧的帧号，所述第一用户设备的PI位于所述PICH无线帧的帧号指示所述寻呼时机，所述寻呼时机计算公式：
Paging Occasion＝{IMSI mod(DRX cycle length2 div PBP)}*PBP+n*DRX cycle length1+Frame Offset
其中，Paging Occasion表示寻呼时机，IMSI为国际移动用户识别码，mod表示取模运算，div表示除法运算，PBP为寻呼块周期，n是小区系统帧号且n＝0,1,2…SFN，Frame Offset为帧偏移量，DRX cycle length1表示为第一用户设备使用的DRX长度，即为第一DRX周期的长度，DRX cycle length2表示为第二用户设备使用的DRX长度，即为第二DRX周期的长度，且DRX cycle length2小于DRX cycle length1。
结合第三方面、第一方面第一至第四种可能的实现方式种的任意一种，在第五种可能的实现方式中，所述第二确定模块包括：
第三确定单元，用于根据寻呼指示的个数以及所述第一用户设备的识别码确定所述第一用户设备的PI在所述PICH无线帧中的备用比特位的编号，其中，所述寻呼指示的个数根据所述第一用户设备的寻呼时机对应的PICH无线 帧的备用比特位个数和所述PI所占的比特位个数确定。
结合第一方面，在第六种可能的实现方式中，其特征在于，所述装置还包括：
计算模块，用于根据如下备用比特位公式计算所述第二确定模块确定所述第一用户设备的PI在PICH无线帧中的备用比特位的编号：
Figure PCTCN2015075131-appb-000003
其中，q表示所述第一用户设备的PI在PICH无线帧中的备用比特位的编号，Vpi根据所述第一用户设备的识别号与Np计算得到的值，SFN表示系统帧号，mod表示取模运算，Np表示每个PICH无线帧内PI的个数，Np’表示所述第一用户设备通过备用比特位发射的PI个数。
结合第三方面、第一方面第一至第六种可能的实现方式中的任意一种，在第七种可能的实现方式中，所述装置还包括：
第二发送模块，用于在所述第一用户设备的PI的PICH的关联信道上发送寻呼消息，以通知所述第一用户设备系统广播消息发生了变更。
结合第三方面第七种实现方式，在第八种可能的实现方式中，所述第一用户设备的PI的PICH的关联信道，包括：
辅助公用控制物理信道S-CCPCH，所述S-CCPCH与所述PICH关联，或
高速共享控制信道HS-SCCH，所述HS-SCCH与所述PICH关联，或
高速物理下行链路共享信道HS-PDSCH，所述HS-PDSCH与所述PICH关联。
本发明第四方面提供一种消息变更处理的装置，包括：
确定模块，用于确定第一用户设备的寻呼时机；
监听模块，用于在所述第一确定模块确定的寻呼时机上监听对应的寻呼指示信道PICH；
解析模块，用于解析监听模块监听的PICH无线帧内的备用比特位至少之一并获取PI的预定值，或，解析PICH无线帧内预定义的PI并获取PI的预定值，所述预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示；
指示模块，用于当所述解析模块解析得到的PI的预定值为1时，则指示 系统广播消息发生了变更。
结合第四方面，在第一种可能的实现方式中，所述备用比特位为所述PICH无线帧中最后12个比特。
结合第四方面，在第一种可能的实现方式中，所述预定义的PI的比特位为所述PICH无线帧中前288个比特至少之一。
结合第四方面，在第一种可能的实现方式中，所述确定模块包括：
第一确定单元，用于根据所述第一用户设备的识别码，所述第一用户设备使用的第一非连续接收DRX周期的长度和第二用户设备使用的第二DRX周期的长度确定所述第一用户设备的PI位于所述PICH无线帧的帧号，所述第一用户设备的PI位于所述PICH无线帧的帧号指示所述寻呼时机，其中，所述第二DRX周期的长度小于第一DRX周期的长度。
结合第四方面、第四方面第一至第三种可能的实现方式中的任意一种，在第四种可能的实现方式中，所述确定模块包括：
第二确定单元，用于根据如下寻呼时机计算公式，确定所述第一用户设备的PI位于的所述PICH无线帧的帧号，所述第一用户设备的PI位于所述PICH无线帧的帧号指示所述寻呼时机，所述寻呼时机计算公式：
Paging Occasion＝{IMSI mod(DRX cycle length2 div PBP)}*PBP+n*DRX cycle length1+Frame Offset
其中，Paging Occasion表示寻呼时机，IMSI为国际移动用户识别码，mod表示取模运算，div表示除法运算，PBP为寻呼块周期，n是小区系统帧号且n＝0,1,2…SFN，Frame Offset为帧偏移量，DRX cycle length1表示为第一用户设备使用的DRX长度，即为第一DRX周期的长度，DRX cycle length2表示为第二用户设备使用的DRX长度，即为第二DRX周期的长度，且DRX cycle length2小于DRX cycle length1。
结合第四方面、第四方面第一至第四种可能的实现方式中的任意一种，在第五种可能的实现方式中，所述解析模块包括：
第一解析单元，用于根据寻呼指示的个数以及所述第一用户设备的识别码解析所述第一用户设备的PI在所述PICH无线帧中的备用比特位的编号，其中，所述寻呼指示的个数根据所述第一用户设备的寻呼时机对应的PICH无线 帧的备用比特位个数和所述PI所占的比特位个数确定。
结合第四方面，在第六种可能的实现方式中，所述装置还包括：
计算模块，用于根据如下备用比特位公式计算所述解析模块解析的第一用户设备的PI在PICH无线帧中的备用比特位的编号：
Figure PCTCN2015075131-appb-000004
其中，q表示所述第一用户设备的PI在PICH无线帧中的备用比特位的编号，VPI根据所述第一用户设备的识别号与Np计算得到的值，SFN表示系统帧号，mod表示取模运算，Np表示每个PICH无线帧内PI的个数，Np’表示所述第一用户设备通过备用比特位发射的PI个数。
结合第四方面、第四方面第一至第六种可能的实现方式种的任意一种，在第七种可能的实现方式中，所述装置还包括：
接收模块，用于在所述指示模块指示指示系统广播消息发生了变更后，从PICH的关联信道上接收寻呼消息，并根据所述寻呼消息进行系统广播消息变更；或，
直接获取变更的系统广播消息。
结合第四方面第七种实现方式，在第八种可能的实现方式中，所述PICH的关联信道包括：
辅助公用控制物理信道S-CCPCH，所述S-CCPCH与所述PICH关联，或
高速共享控制信道HS-SCCH，所述HS-SCCH与所述PICH关联，或
高速物理下行链路共享信道HS-PDSCH，所述HS-PDSCH与所述PICH关联。
本发明第五方面提供一种消息变更处理的系统，包括：基站和用户设备，
所述基站用于：当小区系统广播消息变更时，确定第一用户设备的寻呼时机；确定第一用户设备的寻呼指示PI的比特位位于所述寻呼时机对应的寻呼指示信道PICH无线帧内的备用比特位至少之一，或，确定第一用户设备的寻呼指示PI为预定义的PI，其中所述预定义的PI的比特位位于所述寻呼时机对应的寻呼指示信道PICH无线帧内，所述预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示；将所述第一用户设备的PI设置为预定值；在所述寻呼时机发送所述PI。
所述用户设备用于：确定第一用户设备的寻呼时机；监听所述寻呼时机对应的寻呼指示信道PICH；解析PICH无线帧内的备用比特位至少之一并获取PI的预定值，或，解析PICH无线帧内预定义的PI并获取PI的预定值，所述预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示；当所述PI的预定值为1时，则指示系统广播消息发生了变更。
本发明第六方面提供一种消息变更处理的装置，包括：输入装置、输出装置、存储器和处理器，
其中，所述处理器用于执行如下步骤：
当小区系统广播消息变更时，确定第一用户设备的寻呼时机；
确定第一用户设备的寻呼指示PI的比特位位于所述寻呼时机对应的寻呼指示信道PICH无线帧内的备用比特位至少之一，或，确定第一用户设备的寻呼指示PI为预定义的PI，其中所述预定义的PI的比特位位于所述寻呼时机对应的寻呼指示信道PICH无线帧内，所述预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示；
将所述第一用户设备的PI设置为预定值；
其中，所述输出装置用于执行如下步骤：
在所述寻呼时机发送所述PI。
本发明第七方面提供一种消息变更处理的装置，包括：输入装置、输出装置、存储器和处理器，
其中，所述处理器用于执行如下步骤：
确定第一用户设备的寻呼时机；
监听所述寻呼时机对应的寻呼指示信道PICH；
解析PICH无线帧内的备用比特位至少之一并获取PI的预定值，或，解析PICH无线帧内预定义的PI并获取PI的预定值，所述预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示；
当所述PI的预定值为1时，则指示系统广播消息发生了变更。
从以上技术方案可以看出，本发明实施例具有以下优点：
本实施例中，将用于指示小区系统消息变更的PI置于PICH无线帧的备 用比特位中或者预先定义的比特位中，当小区系统消息发送变更时，基站侧通过该特殊的PI向第一用户设备指示系统消息的变更，避免第二用户设备在第一DRX周期内多次读取系统消息变更的通知消息，从而使得第二用户设备节省自身的电量，提升用户的使用体验。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域技术人员来讲，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是本实施例中引入长非连续接收周期后的变化示意图；
图2是本实施例中消息变更处理的方法一个实施例示意图；
图3是本实施例中寻呼指示信道的结构示意图；
图4是本实施例中复用比特位指示系统消息变更示意图；
图5是本实施例中消息变更处理的方法另一个实施例示意图；
图6是本实施例中消息变更处理的装置一个实施例示意图；
图7是本实施例中消息变更处理的装置另一个实施例示意图；
图8是本实施例中消息变更处理的装置另一个实施例示意图；
图9是本实施例中消息变更处理的装置另一个实施例示意图；
图10是本实施例中消息变更处理的装置另一个实施例示意图；
图11是本实施例中消息变更处理的装置另一个实施例示意图；
图12是本实施例中消息变更处理的装置一个实施例示意图；
图13是本实施例中消息变更处理的装置另一个实施例示意图；
图14是本实施例中消息变更处理的装置另一个实施例示意图；
图15是本实施例中消息变更处理的装置另一个实施例示意图；
图16是本实施例中消息变更处理的装置另一个实施例示意图；
图17是本实施例中消息变更处理的装置另一个实施例示意图；
图18为本实施例中消息变更处理的系统一个实施例示意图；
图19为本实施例中消息变更处理的基站一个结构示意图；
图20为本实施例中消息变更处理的用户设备一个结构示意图。
具体实施方式
下面将结合本实施例中的附图，对本实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”“第四”等(如果存在)是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本发明的实施例例如能够以除了在这里图示或描述的那些以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
本发明实施例提供了一种消息变更处理的方法、装置及系统，可以通过无线帧内备用比特位或者预定义比特位向第一用户设备发送系统消息变更的PI，避免所有第二老用户设备重复处理这些比特位，从而达到节省电量的功效。
应理解，本发明实施例提供的消息变更处理的方法中，第一用户设备可理解为新用户设备，即具有较长DRX周期的用户设备，第二用户设备为老用户设备，即具有较短DRX周期的用户设备，第一设备出现在第二设备之后。可选地，这里的长DRX周期也可以理解为DRX周期超过5.12秒，短DRX周期是指DRX周期小于或者等于5.12秒。也即第一用户设备在第一非连续接收DRX周期读取所述第一用户设备的寻呼指示信道PICH的寻呼指示PI，第二用户设备在第二DRX周期读取所述第二用户设备的PICH的PI，其中所述第一DRX周期大于所述第二DRX周期，本文的用户设备识别码用于唯一标识用户设备，所述用户设备是指包括用户的用户设备。
请参阅图2，为本实施例中一种小区系统广播消息变更处理的方法的流程示意图，本方法可以由基站执行，其中，第一用户设备在第一非连续接收(DRX，discontinuous reception)周期读取所述第一用户设备的寻呼指示信道 (PICH)的寻呼指示(PI)，第二用户设备在第二DRX周期读取所述第二用户设备的PICH的PI，其中所述第一DRX周期大于所述第二DRX周期。
201、当小区系统广播消息变更时，确定第一用户设备的寻呼时机；
本实施例中，当小区系统消息发生变更时，确定第一用户设备的寻呼时机，寻呼时机可以与无线帧的帧号对应。
小区系统广播消息变更可以是指系统消息的变化，或者终端被呼叫等情况，确定寻呼时机的方式可以通过相应的公式进行计算获取。
在一个DRX周期中，用户设备读取的寻呼指示基于国际移动用户识别码(IMSI，International Mobile Subscriber Identity)或者由通用移动通信系统无线网络临时标识(U_RNTI，Universal Mobile Telecommunications System Radio Network Temporary Identifier)确定，且每个DRX周期里每个用户设备都有一个寻呼时机，即每个用户设备在一个DRX周期里都要读一次PI。
当小区系统消息变更时，基站为了通知空闲状态、小区寻呼信道(Cell_PCH，Cell Paging Channel)状态、路由更新区寻呼信道(URA_PCH，UTRAN Registration Area Paging Channel)状态和小区前向接入信道(CELL_FACH，Forward Access Channel)状态的所有用户设备，优选地，基站需要在整个DRX周期的所有无线帧上的PI均设置为1，这样一个DRX周期内所有的用户设备都会收到PI。
202、确定第一用户设备的寻呼指示PI的比特位位于寻呼时机对应的寻呼指示信道PICH无线帧内的备用比特位至少之一，或，确定第一用户设备的寻呼指示PI为预定义的PI，其中预定义的PI的比特位位于寻呼时机对应的寻呼指示信道PICH无线帧内，预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示；
本实施例中，基站确定第一用户设备的PI的比特位位于寻呼时机对应的寻呼指示信道PICH无线帧内的备用比特位至少之一，请参阅图3，图3为寻呼指示信道的结构示意图，一个PICH无线帧长为10毫秒(ms)，由300个比特组成，其中，288个比特(b0,b1,......,b287))是用来承载PI的，可以被称为预定义的PI的比特位，也可以被称为复用比特位，其中，预定义的PI可以位于寻呼时机对应的PICH无线帧内的预定义的PI的比特位中，预定义的PI 是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示。而其余的12个比特被留作将来使用而不发送的比特位(b288，b289,......,b299)，即在本实施例中被称为备用比特位。
而在本实施例中，基站也可以确定第一用户设备的PI的比特位位于寻呼时机对应的PICH无线帧内预定义的PI的比特位至少之一，该PI位于PICH无线帧中前的288比特至少之一，请参阅图4，图4为预定义的PI的比特位指示系统消息变更示意图，其中，在一个PICH无线帧内前面的288比特，预定义的PI的比特位在承载PI前已被占用，也就是说，预定义的PI的比特位还承载了原本第一用户设备使用的PI，现在将承载新的PI用于指示第一用户设备是否需要进行系统消息变更，由图可知，即利用b0至b287中某一位或者某多位来指示系统消息变更，在本实施例中，对PI在PICH无线帧的位置不做限定，具体的位置可以通过基站侧和第一用户设备计算得到，也可以是基站侧向第一用户设备指示具体的系统消息变更的PI。
在一个实施例中，所述第一用户设备的寻呼时机对应第一PICH无线帧，将所述第一PICH无线帧的备用比特位(例如12个比特)的至少之一设置为所述第一用户设备的PI的比特位。通常，PI所占用的比特位的个数为备用比特位(例如12个比特)的公约数：1、2、3、4、6和12。如果所述第二用户设备的寻呼时机对应第二PICH无线帧，且所述第一PICH无线帧与所述第二PICH无线帧不同，所述第二用户设备使用的PI的比特位为所述第二PICH无线帧的前288个比特的至少一个。如果所述第二用户设备的寻呼时机对应所述第一PICH无线帧，即所述第一用户设备和所述第二用户设备使用相同的第一PICH无线帧，所述第二用户设备使用的PI的比特位为所述第一PICH无线帧的前288个比特的至少一个。
在另一个实施例中，所述第一用户设备的寻呼时机对应第一PICH无线帧，所述第一用户设备使用的PI的比特位为所述第一PICH无线帧的前288个比特的至少一个，在本实施中，由于其它用户设备的PI也可能使用该对应的比特位，所以替换为给所述第一用户设备的PI使用，可以所述第一用户设备的PI与其它用户设备的PI复用该比特位，例如当所述第二用户设备的PI使用第二PICH无线帧的前288个的至少一个比特，将所述第二用户设备使用的第一 PICH无线帧的PI的比特位同时也设置为所述第一用户设备的PI的比特位，也就是所述第一用户设备和所述第二用户设备使用相同的PICH无线帧以及PI在该相同的PICH无线帧占用的比特位，即同一个PI。通常，PI所占用的比特位的个数为预留比特位(例如288个比特)的公约数：1、2、3、4、…、288。
203、将第一用户设备的PI设置为预定值；
本实施例中，所述预定值用于指示用户设备读取通知消息而得到系统消息变更信息或者直接指示系统消息发生了变更，例如，基站将第一用户设备的PI值设置为1，当PI值为1时，则指示用户设备读取通知消息而得到系统消息变更信息或者直接指示系统消息发生了变更，当PI值为0时，则用户设备不读取关联信道上的通知消息或者系统消息没有发生变更，反之亦然。
204、在寻呼时机发送PI。
本实施例中，基站在上述步骤201中获得的寻呼时机时发送PI，以使第一用户设备接收PI，获得系统广播消息变更的信息。
本实施例中，第一DRX周期为第一用户设备的DRX周期，基站在第一DRX周期内广播该PI后，第一用户设备在寻呼时机接收PI。第二用户设备在第二DRX周期内接收PI，第二DRX周期为第二用户设备的DRX周期，且第二用户设备，第二DRX周期的长度小于第一DRX周期。本实施例中，所述第二DRX周期可以为5.12s，第一DRX周期可以为40.96s。
本实施例中，将用于指示小区系统消息变更的PI置于PICH无线帧的备用比特位中或者预先定义的比特位中，当小区系统消息发送变更时，基站侧通过该特殊的PI向第一用户设备指示系统消息的变更，避免第二用户设备在第一DRX周期内多次读取系统消息变更的通知消息，从而使得第二用户设备节省自身的电量，提升用户的使用体验。
可选地，在上述图2对应的实施例的基础上，本发明实施例提供的消息变更处理的方法第一个可选实施例中，备用比特位为PICH无线帧中最后12个比特。
本实施例中，备用比特位确定为PICH无线帧内剩余的最后12个留作将来使用而不发送的比特位，也即为上述实施例中图3所对应的b288至b299的12个比特位。
可选地，在上述图2对应的实施例的基础上，本发明实施例提供的消息变更处理的方法第二个可选实施例中，预定义的PI的比特位为所述PICH无线帧中前288个比特至少之一。
本实施例中，预定义的PI的比特位确定PICH无线帧开始的前288个已被提前占用的比特位，也即为上述实施例中图3所对应的b0至b287的288个比特位。
需要说明的是，该预定义的PI的比特位也可以被称为复用比特位，或预留比特位，此处应理解为可以表达其功能的一个名词，故此处不对具体名称进行限定。
其次，本实施例中，对备用比特位与预定义的PI的比特位进行解释，使该方案在实际使用中的可操作性得以提升，同时，对方案的具体情况做了具体分析，增大本方案的可行性。
可选地，在上述图2对应的实施例的基础上，本发明实施例提供的消息变更处理的方法第三个可选实施例中，确定第一用户设备的寻呼时机，可以包括：
根据第一用户设备的识别码，第一用户设备使用的第一非连续接收DRX周期的长度和第二用户设备使用的第二DRX周期的长度确定第一用户设备的PI位于PICH无线帧的帧号，第一用户设备的PI位于PICH无线帧的帧号指示寻呼时机，其中，第二DRX周期的长度小于第一DRX周期的长度。
本实施例中，基站根据第一用户设备的识别码，以及第一用户设备使用的第一DRX周期的长度和第二用户设备使用的第二DRX周期的长度来确定第一用户设备的PI位于PICH无线帧的帧号，具体地，可以使用寻呼时机计算公式进行计算。其中，第二DRX周期的长度小于第一DRX周期的长度。
再次，本实施例中，提出一种可以确定PICH无线帧中寻呼时机计算的方法，使得方案的实际应用更具有可行性。
可选地，在上述图2对应的实施例、图2对应的第一个至第三个可选实施例中任意一项的基础上，本发明实施例提供的消息变更处理的方法第四个可选实施例中，确定第一用户设备的寻呼时机，可以包括：
根据如下寻呼时机计算公式，确定第一用户设备的PI位于的PICH无线帧的帧号，第一用户设备的PI位于PICH无线帧的帧号指示寻呼时机，寻呼 时机计算公式：
Paging Occasion＝{IMSI mod(DRX cycle length2 div PBP)}*PBP+n*DRX cycle length1+Frame Offset
其中，Paging Occasion表示寻呼时机，IMSI为国际移动用户识别码，mod表示取模运算，div表示除法运算，PBP为寻呼块周期，n是小区系统帧号且n＝0,1,2…SFN，Frame Offset为帧偏移量，DRX cycle length1表示为第一用户设备使用的DRX长度，即为第一DRX周期的长度，DRX cycle length2表示为第二用户设备使用的DRX长度，即为第二DRX周期的长度，且DRX cycle length2小于DRX cycle length1。
本实施例中，寻呼时机计算公式可以有两种表达式，下面将分别对这两个公式进行介绍：
Paging Occasion＝{IMSI mod(DRX cycle length div PBP)}*PBP+n*DRX cycle length+Frame Offset                                   (1)
其中，Paging Occasion表示寻呼时机，IMSI为国际移动用户识别码，mod表示取模运算，DRX cycle length表示第一用户设备使用的第一DRX周期长度，div表示除法运算，PBP为寻呼块周期(PBP，Paging Block Periodicity)，n是小区系统帧号(SFN，System Frame Number)且n＝0,1,2…SFN，Frame Offset为帧偏移量，对于频分双工(FDD，frequency division duplex)而言帧偏移为0，且对FDD来说PBP为1，而对于时分双工(TDD，time division duplex)而言，PICH无线帧的值会在系统信息中被告知。
寻呼时机计算公式的第二种表达式如下所述：
Paging Occasion＝{IMSI mod(DRX cycle length2 div PBP)}*PBP+n*DRX cycle length1+Frame Offset                               (2)
其中，Paging Occasion表示寻呼时机，IMSI为国际移动用户识别码，mod表示取模运算，div表示除法运算，PBP为寻呼块周期，n是小区系统帧号且n＝0,1,2…SFN，Frame Offset为帧偏移量，DRX cycle length1表示为第一用户设备使用的DRX长度，即为第一DRX周期的长度，DRX cycle length2表示为第二用户设备使用的DRX长度，即为第二DRX周期的长度，且DRX cycle length2小于DRX cycle length1。
需要说明的是，DRX cycle length1可以为DRX cycle length2的整数倍，也可以比DRX cycle length2长的其它长度，故此处不作限定。
由于所述第一用户设备的寻呼时机可能会超过SFN，且考虑到SFN有最大值限制，最大值为4096个无线帧，因为一个无线帧帧长为10毫秒(ms)，所以SFN中只支持40.96秒，当所述第一用户设备的寻呼时机超过40.96秒时，所述基站和所述第二用户设备可以将结果保存为绝对时间，该绝对时间即为某个时间点上的准确时间，如在2015年10月8日的18时30分25秒500毫秒这一时刻，所述第一用户设备会在该绝对时间点监听PICH。在本发明的另一实施例中，所述基站和所述第一用户设备也可以将结果保存为SFN最大值的整数倍+PO’，PO’的值在4096内，所述第一用户设备在该SFN最大值的整数倍+PO’对应的时间点监听PICH，其中，PO’为寻呼时机。
进一步地，本实施例中，具体提出了两种寻呼时机计算公式，其一为现有技术中计算寻呼时机的方式，另一为本方案中构建的一种新的寻呼时机计算公式，由此可以大幅度的提升方案在实际应用的可操作性。
可选地，在上述图2对应的实施例、图2对应的第一个至第四个可选实施例中任意一项的基础上，本发明实施例提供的消息变更处理的方法第五个可选实施例中，确定第一用户设备的寻呼指示PI的比特位位于寻呼时机对应的寻呼指示信道PICH无线帧内的备用比特位至少之一，可以包括：
根据寻呼指示的个数以及第一用户设备的识别码确定第一用户设备的PI在PICH无线帧中的备用比特位的编号，其中，寻呼指示的个数根据第一用户设备的寻呼时机对应的PICH无线帧的备用比特位个数和PI所占的比特位个数确定。
本实施例中，基站也可以根据第一用户设备的寻呼指示个数以及第一用户设备的识别码来确定第一用户设备的PI在PICH无线帧中的备用比特位的编号，其中，寻呼指示的个数可以根据第一用户设备的寻呼时机对应的PICH无线帧的备用比特位个数和PI所占的比特位个数确定。具体地，可以通过备用比特位公式计算得到PI在PICH无线帧中的备用比特位的编号。
再进一步地，本实施例中，提出一种可以确定PICH无线帧中的备用比特位的编号的方法，使得方案的实际应用更具有可行性。
可选地，在上述图2对应的实施例的基础上，本发明实施例提供的消息变更处理的方法第六个可选实施例中，还可以包括：
根据如下备用比特位公式计算第一用户设备的PI在PICH无线帧中的备用比特位的编号：
Figure PCTCN2015075131-appb-000005
其中，q表示所述第一用户设备的PI在PICH无线帧中的备用比特位的编号，Vpi根据所述第一用户设备的识别号与Np计算得到的值，SFN表示系统帧号，mod表示取模运算，Np表示每个PICH无线帧内PI的个数，Np’表示所述第一用户设备通过备用比特位发射的PI个数。
本实施例中，基站根据寻呼指示的个数以及所述第一用户设备的识别号确定所述第一用户设备的PI在所述PICH无线帧中的预留比特位的编号，所述寻呼指示的个数根据所述第一用户设备的寻呼时机对应的PICH无线帧的预留比特位个数和所述PI所占的比特位个数确定。例如，所述寻呼指示的个数等于所述第一用户设备的寻呼时机对应的PICH无线帧的预留比特位的个数除以PI所占用的比特位的个数，例如，所述寻呼指示的个数为所述第一用户设备的寻呼时机对应的PICH无线帧的预留比特位的个数的公约数，例如，如果所述第一用户设备的寻呼时机对应的PICH无线帧的预留比特位的个数为12位，PI所占用的比特位的个数为12的公约数：1、2、3、4、6和12，则所述寻呼指示的个数对应的为：12、6、4、3、2和1。
根据如下备用比特位公式(3)计算第一用户设备的PI在PICH无线帧中的备用比特位的编号：
Figure PCTCN2015075131-appb-000006
其中，q表示备用比特位的编号，Vpi表示根据第一用户设备标识号与Np计算得到无线帧的编号，例如Vpi＝DRX Index mod Np，其中，DRX Index＝IMSI div 8192，SFN表示系统帧号，mod表示取模运算，Np表示每个PICH无线帧内PI的个数，Np’表示通过备用比特位发射的PI个数。
本实施例中，基站可以根据备用比特位公式，确定第一用户设备的PI在对应的PICH无线帧中的备用比特位的编号，备用比特位公式用于计算第一用 户设备的PI在PICH无线帧中的备用比特位的编号，请参见公式(3)。
可以理解的是，PI所占用的比特位的个数为12的公约数，一个PI可以有1个比特位，也可以有多个比特位，由于一个PICH无线帧内有12个备用比特位可以承载PI，当承载2个PI时，则每个PI由6个比特位组成；当承载3个PI时，则每个PI由4个比特位组成。由上述推导PI还可以由2个比特位或3个比特位组成，故此处不作限定。
以下介绍可以针对每个PI包含的比特位位数的不同分别进行说明。
当每个PI为一个比特位时，各个用户设备监视其对应的寻呼时机所在的PICH无线帧中PI所在的比特位，当判断PI所在的比特位相应的PI为1时，则指示用户设备系统消息发生了变更或者指示用户设备读取通知消息，从而得到系统消息变更信息，即读取与该PICH相关联的寻呼信道(PCH，Paging Channel)或者高速下行链路共享信道(HS-DSCH，High-Speed Downlink Shared Channel)上相应的通知信息；当PI值为0时，则指示用户设备系统消息没有发生变更或者指示用户设备不读取该PI对应的通知消息。
例如，所述第一用户设备的PI使用对应的寻呼时机所在的PICH无线帧的备用份比特位，使用IMSI取模进行指派，例如，PI＝IMSI mod 12，或者(IMSI div 8192)mod 12，取模值为0，1，2……..11分别对应PICH备用位的b288，b289，b290……b299，所述第一用户设备也读取相应位来判断是否接收到寻呼指示。
这里IMSI仅仅是一种计算方式，用户设备也可以通过其他的标识进行计算，例如无线网络临时标识(U-RNTI，UTRAN Radio Network Temporary Identifier)，故此处不做限定。
需要说明的是，本实施例中，可以针对不同的用户设备分配PICH无线帧中备用比特位上同一个比特用于各个用户设备的PI，例如：基站侧指定系统广播消息变更需要读取的PI的位置。在另一实施例中，也可以针对不同的用户设备分配PICH无线帧中备用比特位上不同比特位用于不同的用户设备的PI。
需要说明的是，在系统广播消息变更中，这里的PI仅仅是对寻呼指示的一种描述，和当前用户设备接收非系统广播消息变更时的PI可能为一个，也 可能是不同的，故此处不做限定。
当每个PI由多个比特位组成时，各个用户设备监视其对应寻呼时机所在的PICH无线帧的某几位，例如b288位和b289位，当判断相应为的PI为1时，便接收与该PICH相关联的PCH或者HS-DSCH以得到相应的小区系统消息变更的信息。
此时，也使用IMSI取模进行指派，在每一个PICH无线帧内，通过备用比特发射Np’个寻呼指示{P0,…,PNp’-1}，其中Np’＝1,2,3,4,6或12。高层为某一用户设备而计算的PI，是与某个寻呼指示Pq相关联的，其中q是按照一个函数式计算的，参见公式3。
由高层计算的PI是与寻呼指示Pq的值相关联的。如果在某一帧中，寻呼指示被设为“1”，则它指示与这个寻呼指示和PI相关的用户设备应该读取关联的S-CCPCH帧或者HS-DSCH。
需要说明的是，本实施例中，可以针对不同的用户设备分配PICH无线帧中备用比特位上相同的多个比特用于各个用户设备的PI，也可以针对不同的用户设备分配PICH无线帧中备用比特位上不同比特位上不同的多个比特用于各个用户设备的PI。
更进一步地，本实施例中，根据备用比特位公式来确定第一用户设备的PI在帧号对应的PICH无线帧中的备用比特位的编号，对方案的实现具有重要意义，而针对PI包含的比特位位数的不同可以制定不同的计算方法，对方案的实现具有实用性强。适用范围大的好处。
可选地，在上述图2对应的实施例、图2对应的第一个至第六个可选实施例中任意一项的基础上，本发明实施例提供的消息变更处理的方法第七个可选实施例中，还可以包括：
在第一用户设备的PI的PICH的关联信道上发送寻呼消息，以通知第一用户设备系统广播消息发生了变更。
本实施例中，基站在设置有第一用户设备的PI的PICH的关联信道上发送寻呼消息，以此来通知第一用户设备系统广播消息发生了变更。
而当第一用户设备获得设置为1的该PI后，会接收通知消息寻呼类型1(PAGING TYPE 1)或系统信息变更指示(SYSTEM INFORMATION  CHANGE INDICATION)，根据所接收到的通知消息内包含的信息元素(IE，Information Element)“广播控制信道变更信息”(BCCH modification info，Broadcast Control Channel modification information)的内容，判断是否读取系统消息。
再进一步地，本实施例中，提供了当小区系统消息发生变更时基站通知第一用户设备的方法，这样，使得方案在实现过程中更具有可操作性，同时，对于第一用户设备而言，可以通过相关信道接收小区系统消息变更的信息，使得第一设备读取消息的时效性更强。
可选地，在上述图2对应第七个的实施例的基础上，本发明实施例提供的消息变更处理的方法第八个可选实施例中，第一用户设备的PI的PICH的关联信道，可以包括：
辅助公用控制物理信道S-CCPCH，S-CCPCH与PICH关联，或
高速共享控制信道HS-SCCH，HS-SCCH与PICH关联，或
高速物理下行链路共享信道HS-PDSCH，HS-PDSCH与PICH关联。
本实施例中，第一用户设备的PICH的关联信道可以是辅助公用控制物理信道(S-CCPCH，Secondary Common Control Physical Channel)，用于承载来自传输信道FACH和PCH的数据，S-CCPCH所使用的码和时隙等配置信息在小区中广播。物理层上可以根据配置把来自一条或多条的FACH与一条PCH的数据组合在一条编码组合传输信道(CCTrCH，Coded Composite Transport Channel)上，然后再根据配置，将CCTrCH数据映射到一条或多条S-CCPCH物理信道上。
第一用户设备的PICH的关联信道也可以是高速共享控制信道(HS-SCCH，high speed shared control channel)，PICH与HS-SCCH具有指定的定时关系，HS-SCCH承载信令信息的下行信道，而且每用户设备最多4条HS-SCCH。HS-SCCH与高速物理下行共享信道(HS-PDSCH，high speed physical downlink shared channel)关联，用于承载寻呼消息的高速下行链路共享信道(HS-DSCH，High-Speed Downlink Shared Channel)映射到该HS-PDSCH上，从而HS-DSCH与PICH存在关联关系。
又进一步地，本实施例中，将关联信道具体化为S-CCPCH或者 HS-PDSCH，或者与PICH间接关联的HS-DSCH，使得本方案在实际应用中更具有可行性，并且可以根据不同情况选择关联信道，进一步提升了方案的灵活性。
上面从基站的角度对本实施例中消息变更处理的方法进行了描述，下面从第一用户设备的角度对本实施例中消息变更处理的方法进行描述，请参阅图5，本实施例中消息变更处理的方法另一实施例包括：
501、确定第一用户设备的寻呼时机；
本实施例中，当小区系统消息发生变更时，确定第一用户设备的寻呼时机，寻呼时机可以与无线帧的帧号对应。
小区系统广播消息变更可以是指系统消息的变化，或者终端被呼叫等情况，确定寻呼时机的方式可以通过相应的公式进行计算获取。
在一个DRX周期中，用户设备读取的寻呼指示基于IMS或者由U_RNTI确定，且每个DRX周期里每个用户设备都有一个寻呼时机，即每个用户设备在一个DRX周期里都要读一次PI。
当小区系统消息变更时，基站为了通知空闲状态、Cell_PCH状态、URA_PCH状态和CELL_FACH状态的所有用户设备，优选地，基站需要在整个DRX周期的所有无线帧上的PI均设置为1，这样一个DRX周期内所有的用户设备都会收到PI。
502、监听寻呼时机对应的寻呼指示信道PICH；
本实施例中，第一用户设备会监听寻呼时机对应的PICH，监听的时间可以为一段固定的时间。
503、解析PICH无线帧内的备用比特位至少之一并获取PI的预定值，或，解析PICH无线帧内预定义的PI并获取PI的预定值，预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示；
本实施例中，第一用户设备可以通过解析PICH无线帧内的备用比特位至少之一并获取PI的预定值，请参阅图3，图3为寻呼指示信道的结构示意图，一个PICH无线帧长为10毫秒(ms)，由300个比特组成，最后的12个比特被留作将来使用而不发送的比特位(b288，b289,......,b299)，即在本实施例中被称为备用比特位。
第一用户设备也可以通过解析PICH无线帧内的预定义的PI的比特位至少之一并获取PI的预定值，请参阅图3，其中，在一个PICH无线帧内前面的288比特(b0,b1,......,b287))是用来承载PI的，可以被称为本实施例中的预定义的PI的比特位，也可以被称为复用比特位，还可以被称为预留比特位，预定义的PI的比特位在承载PI前已被占用，也就是说，预定义的PI的比特位还承载了原本第一用户设备使用的PI，现在将承载新的PI用于指示第一用户设备是否需要进行系统消息变更，由图可知，即利用b0至b287中某一位或者某多位来指示系统消息变更，在本实施例中，对PI在PICH无线帧的位置不做限定，具体的位置可以通过基站侧和第一用户设备计算得到，也可以是基站侧向第一用户设备指示具体的系统消息变更的PI。
在一个实施例中，所述第一用户设备的寻呼时机对应第一PICH无线帧，将所述第一PICH无线帧的备用比特位(例如12个比特)的至少之一设置为所述第一用户设备的PI的比特位。通常，PI所占用的比特位的个数为备用比特位(例如12个比特)的公约数：1、2、3、4、6和12。如果所述第二用户设备的寻呼时机对应第二PICH无线帧，且所述第一PICH无线帧与所述第二PICH无线帧不同，所述第二用户设备使用的PI的比特位为所述第二PICH无线帧的前288个比特的至少一个。如果所述第二用户设备的寻呼时机对应所述第一PICH无线帧，即所述第一用户设备和所述第二用户设备使用相同的第一PICH无线帧，所述第二用户设备使用的PI的比特位为所述第一PICH无线帧的前288个比特的至少一个。
在另一个实施例中，所述第一用户设备的寻呼时机对应第一PICH无线帧，所述第一用户设备使用的PI的比特位为所述第一PICH无线帧的前288个比特的至少一个，在本实施中，由于其它用户设备的PI也可能使用该对应的比特位，所以替换为给所述第一用户设备的PI使用，可以所述第一用户设备的PI与其它用户设备的PI复用该比特位，例如当所述第二用户设备的PI使用第二PICH无线帧的前288个的至少一个比特，将所述第二用户设备使用的第一PICH无线帧的PI的比特位同时也设置为所述第一用户设备的PI的比特位，也就是所述第一用户设备和所述第二用户设备使用相同的PICH无线帧以及PI在该相同的PICH无线帧占用的比特位，即同一个PI。通常，PI所占用的比特 位的个数为预留比特位(例如288个比特)的公约数：1、2、3、4、…、288。
504、当PI的预定值为1时，则指示系统广播消息发生了变更。
本实施例中，所述预定值用于指示用户设备读取通知消息而得到系统消息变更信息或者直接指示系统消息发生了变更，例如，基站将第一用户设备的PI值设置为1，当PI值为1时，则指示用户设备读取通知消息而得到系统消息变更信息或者直接指示系统消息发生了变更，当PI值为0时，则用户设备不读取关联信道上的通知消息或者系统消息没有发生变更，反之亦然。
本实施例中，将用于指示小区系统消息变更的PI置于PICH无线帧的备用比特位中或者预先定义的比特位中，当小区系统消息发送变更时，基站侧通过该特殊的PI向第一用户设备指示系统消息的变更，避免第二用户设备在第一DRX周期内多次读取系统消息变更的通知消息，从而使得第二用户设备节省自身的电量，提升用户的使用体验。
可选地，在上述图5对应的实施例的基础上，本发明实施例提供的消息变更处理的方法第一个可选实施例中，备用比特位为PICH无线帧中最后12个比特。
本实施例中，备用比特位确定为PICH无线帧内剩余的最后12个留作将来使用而不发送的比特位，也即为上述实施例中图3所对应的b288至b299的12个比特位。
可选地，在上述图2对应的实施例的基础上，本发明实施例提供的消息变更处理的方法第二个可选实施例中，预定义的PI的比特位为所述PICH无线帧中前288个比特至少之一。
本实施例中，预定义的PI的比特位确定PICH无线帧开始的前288个已被提前占用的比特位，也即为上述实施例中图3所对应的b0至b287的288个比特位。也可以被称为复用比特位，或预留比特位，此处应理解为可以表达其功能的一个名词，故此处不对具体名称进行限定。
其次，本实施例中，对备用比特位与预定义的PI的比特位进行解释，使该方案在实际使用中的可操作性得以提升，同时，对方案的具体情况做了具体分析，增大本方案的可行性。
可选地，在上述图2对应的实施例的基础上，本发明实施例提供的消息变 更处理的方法第三个可选实施例中，确定第一用户设备的寻呼时机，可以包括：
根据第一用户设备的识别码，第一用户设备使用的第一非连续接收DRX周期的长度和第二用户设备使用的第二DRX周期的长度确定第一用户设备的PI位于PICH无线帧的帧号，第一用户设备的PI位于PICH无线帧的帧号指示寻呼时机，其中，第二DRX周期的长度小于第一DRX周期的长度。
本实施例中，第一用户设备可以根据第一用户设备的识别码，以及第一用户设备使用的第一DRX周期的长度和第二用户设备使用的第二DRX周期的长度来确定第一用户设备的PI位于PICH无线帧的帧号，具体地，可以使用寻呼时机计算公式进行计算。其中，第二DRX周期的长度小于第一DRX周期的长度。
再次，本实施例中，提出一种可以确定PICH无线帧中寻呼时机计算的方法，使得方案的实际应用更具有可行性。
可选地，在上述图2对应的实施例、图2对应的第一个至第三个可选实施例中任意一项的基础上，本发明实施例提供的消息变更处理的方法第四个可选实施例中，确定第一用户设备的寻呼时机，可以包括：
根据如下寻呼时机计算公式，确定第一用户设备的PI位于的PICH无线帧的帧号，第一用户设备的PI位于PICH无线帧的帧号指示寻呼时机，寻呼时机计算公式：
Paging Occasion＝{IMSI mod(DRX cycle length2 div PBP)}*PBP+n*DRX cycle length1+Frame Offset
其中，Paging Occasion表示寻呼时机，IMSI为国际移动用户识别码，mod表示取模运算，div表示除法运算，PBP为寻呼块周期，n是小区系统帧号且n＝0,1,2…SFN，Frame Offset为帧偏移量，DRX cycle length1表示为第一用户设备使用的DRX长度，即为第一DRX周期的长度，DRX cycle length2表示为第二用户设备使用的DRX长度，即为第二DRX周期的长度，且DRX cycle length2小于DRX cycle length1。
本实施例中，寻呼时机计算公式可以有两种表达式，下面将分别对这两个公式进行介绍：
Paging Occasion＝{IMSI mod(DRX cycle length div PBP)}*PBP+n*DRX  cycle length+Frame Offset                                   (1)
其中，Paging Occasion表示寻呼时机，IMSI为国际移动用户识别码，mod表示取模运算，DRX cycle length表示第一用户设备使用的第一DRX周期长度，div表示除法运算，PBP为寻呼块周期，n是小区SFN，且n＝0,1,2…SFN，Frame Offset为帧偏移量，对于FDD而言帧偏移为0，且对FDD来说PBP为1，而对于TDD而言，PICH无线帧的值会在系统信息中被告知。
寻呼时机计算公式的第二种表达式如下所述：
Paging Occasion＝{IMSI mod(DRX cycle length2 div PBP)}*PBP+n*DRX cycle length1+Frame Offset                              (2)
其中，Paging Occasion表示寻呼时机，IMSI为国际移动用户识别码，mod表示取模运算，div表示除法运算，PBP为寻呼块周期，n是小区系统帧号且n＝0,1,2…SFN，Frame Offset为帧偏移量，DRX cycle length1表示为第一用户设备使用的DRX长度，即为第一DRX周期的长度，DRX cycle length2表示为第二用户设备使用的DRX长度，即为第二DRX周期的长度，且DRX cycle length2小于DRX cycle length1。
需要说明的是，DRX cycle length1可以为DRX cycle length2的整数倍，也可以比DRX cycle length1长的其它长度，故此处不作限定。
由于所述第一用户设备的寻呼时机可能会超过SFN，且考虑到SFN有最大值限制，最大值为4096个无线帧，因为一个无线帧帧长为10毫秒(ms)，所以SFN中只支持40.96秒，当所述第一用户设备的寻呼时机超过40.96秒时，所述基站和所述第二用户设备可以将结果保存为绝对时间，该绝对时间即为某个时间点上的准确时间，如在2015年10月8日的18时30分25秒500毫秒这一时刻，所述第一用户设备会在该绝对时间点监听PICH。在本发明的另一实施例中，所述基站和所述第一用户设备也可以将结果保存为SFN最大值的整数倍+PO’，PO’的值在4096内，所述第一用户设备在该SFN最大值的整数倍+PO’对应的时间点监听PICH，其中，PO’为寻呼时机。
进一步地，本实施例中，具体提出了两种寻呼时机计算公式，其一为现有技术中计算寻呼时机的方式，另一为本方案中构建的一种新的寻呼时机计算公式，由此可以大幅度的提升方案在实际应用的可操作性。
可选地，在上述图5对应的实施例、图5对应的第一个至第四个可选实施例中任意一项的基础上，本发明实施例提供的消息变更处理的方法第五个可选实施例中，解析PICH无线帧内的备用比特位至少之一，可以包括：
根据寻呼指示的个数以及第一用户设备的识别码解析第一用户设备的PI在PICH无线帧中的备用比特位的编号，其中，寻呼指示的个数根据第一用户设备的寻呼时机对应的PICH无线帧的备用比特位个数和PI所占的比特位个数确定。
本实施例中，第一用户设备也可以根据第一用户设备的寻呼指示个数以及第一用户设备的识别码来确定第一用户设备的PI在PICH无线帧中的备用比特位的编号，其中，寻呼指示的个数可以根据第一用户设备的寻呼时机对应的PICH无线帧的备用比特位个数和PI所占的比特位个数确定。具体地，可以通过备用比特位公式计算得到PI在PICH无线帧中的备用比特位的编号。
再进一步地，本实施例中，提出一种可以确定PICH无线帧中的备用比特位的编号的方法，使得方案的实际应用更具有可行性。
可选地，在上述图5对应的实施例的基础上，本发明实施例提供的消息变更处理的方法第六个可选实施例中，还可以包括：
根据如下备用比特位公式计算所述第一用户设备的PI在PICH无线帧中的备用比特位的编号：
Figure PCTCN2015075131-appb-000007
其中，q表示所述第一用户设备的PI在PICH无线帧中的备用比特位的编号，VPI根据所述第一用户设备的识别号与Np计算得到的值，SFN表示系统帧号，mod表示取模运算，Np表示每个PICH无线帧内PI的个数，Np’表示所述第一用户设备通过备用比特位发射的PI个数。
本实施例中，第一用户设备根据寻呼指示的个数以及所述第一用户设备的识别号确定所述第一用户设备的PI在所述PICH无线帧中的预留比特位的编号，所述寻呼指示的个数根据所述第一用户设备的寻呼时机对应的PICH无线帧的预留比特位个数和所述PI所占的比特位个数确定。例如，所述寻呼指示的个数等于所述第一用户设备的寻呼时机对应的PICH无线帧的预留比特位的个数除以PI所占用的比特位的个数，例如，所述寻呼指示的个数为所述第一 用户设备的寻呼时机对应的PICH无线帧的预留比特位的个数的公约数，例如，如果所述第一用户设备的寻呼时机对应的PICH无线帧的预留比特位的个数为12位，PI所占用的比特位的个数为12的公约数：1、2、3、4、6和12，则所述寻呼指示的个数对应的为：12、6、4、3、2和1。
根据如下备用比特位公式(3)计算第一用户设备的PI在PICH无线帧中的备用比特位的编号：
Figure PCTCN2015075131-appb-000008
其中，q表示备用比特位的编号，Vpi表示根据第一用户设备标识号与Np计算得到无线帧的编号，例如Vpi＝DRX Index mod Np，其中，DRX Index＝IMSI div 8192，SFN表示系统帧号，mod表示取模运算，Np表示每个PICH无线帧内PI的个数，Np’表示通过备用比特位发射的PI个数。
本实施例中，第一用户设备可以根据备用比特位公式，确定第一用户设备的PI在对应的PICH无线帧中的备用比特位的编号，备用比特位公式用于计算第一用户设备的PI在PICH无线帧中的备用比特位的编号，请参见公式(3)。
可以理解的是，PI所占用的比特位的个数为12的公约数，一个PI可以有1个比特位，也可以有多个比特位，由于一个PICH无线帧内有12个备用比特位可以承载PI，当承载2个PI时，则每个PI由6个比特位组成；当承载3个PI时，则每个PI由4个比特位组成。由上述推导PI还可以由2个比特位或3个比特位组成，故此处不作限定。
以下介绍可以针对每个PI包含的比特位位数的不同分别进行说明。
当每个PI为一个比特位时，各个用户设备监视其对应的寻呼时机所在的PICH无线帧中PI所在的比特位，当判断PI所在的比特位相应的PI为1时，则指示用户设备系统消息发生了变更或者指示用户设备读取通知消息，从而得到系统消息变更信息，即读取与该PICH相关联的寻呼信道(PCH，Paging Channel)或者高速下行链路共享信道(HS-DSCH，High-Speed Downlink Shared Channel)上相应的通知信息；当PI值为0时，则指示用户设备系统消息没有发生变更或者指示用户设备不读取该PI对应的通知消息。
例如，所述第一用户设备的PI使用对应的寻呼时机所在的PICH无线帧的备用份比特位，使用IMSI取模进行指派，例如，PI＝IMSI mod 12，或者(IMSI  div 8192)mod 12，取模值为0，1，2……..11分别对应PICH备用位的b288，b289，b290……b299，所述第一用户设备也读取相应位来判断是否接收到寻呼指示。
这里IMSI仅仅是一种计算方式，用户设备也可以通过其他的标识进行计算，例如无线网络临时标识(U-RNTI，UTRAN Radio Network Temporary Identifier)，故此处不做限定。
需要说明的是，本实施例中，可以针对不同的用户设备分配PICH无线帧中备用比特位上同一个比特用于各个用户设备的PI，例如：基站侧指定系统广播消息变更需要读取的PI的位置。在另一实施例中，也可以针对不同的用户设备分配PICH无线帧中备用比特位上不同比特位用于不同的用户设备的PI。
需要说明的是，在系统广播消息变更中，这里的PI仅仅是对寻呼指示的一种描述，和当前用户设备接收非系统广播消息变更时的PI可能为一个，也可能是不同的，故此处不做限定。
当每个PI由多个比特位组成时，各个用户设备监视其对应寻呼时机所在的PICH无线帧的某几位，例如b288位和b289位，当判断相应为的PI为1时，便接收与该PICH相关联的PCH或者HS-DSCH以得到相应的小区系统消息变更的信息。
此时，也使用IMSI取模进行指派，在每一个PICH无线帧内，通过备用比特发射Np’个寻呼指示{P0,…,PNp’-1}，其中Np’＝1,2,3,4,6或12。高层为某一用户设备而计算的PI，是与某个寻呼指示Pq相关联的，其中q是按照一个函数式计算的，参见公式3。
由高层计算的PI是与寻呼指示Pq的值相关联的。如果在某一帧中，寻呼指示被设为“1”，则它指示与这个寻呼指示和PI相关的用户设备应该读取关联的S-CCPCH帧或者HS-DSCH。
需要说明的是，本实施例中，可以针对不同的用户设备分配PICH无线帧中备用比特位上相同的多个比特用于各个用户设备的PI，也可以针对不同的用户设备分配PICH无线帧中备用比特位上不同比特位上不同的多个比特用于各个用户设备的PI。
更进一步地，本实施例中，根据备用比特位公式来确定第一用户设备的PI在帧号对应的PICH无线帧中的备用比特位的编号，对方案的实现具有重要意义，而针对PI包含的比特位位数的不同可以制定不同的计算方法，对方案的实现具有实用性强。适用范围大的好处。
可选地，在上述图5对应的实施例、图5对应的第一个至第六个可选实施例中任意一项的基础上，本发明实施例提供的消息变更处理的方法第七个可选实施例中，还可以包括：
从PICH的关联信道上接收寻呼消息，并根据寻呼消息进行系统广播消息变更；或，
直接获取变更的系统广播消息。
本实施例中，当系统广播消息发送了变更时，第一用户设备可以从PICH的关联信道上接收寻呼消息，再根据寻呼消息进行对应的系统广播消息的变更。或者，第一用户设备收到指示后，并不从PICH的关联信道上接收寻呼消息，而是直接接收主信息块(MIB，Master Informaiton Block)，再根据收到的MIB来判断系统消息是否发生了改变，若发生了改变，则将系统消息更新到最新的状态。
再进一步地，本实施例中，提供了两种在第一用户设备侧读取新的系统广播消息的方法，其中，直接读取MIB后判断系统消息是否发生变化，从而将系统消息进行更新的方法为本发明提供的一种新方法，由此为本方案增加了可行性，同时，灵活性也得以提升。
可选地，在上述图2对应第七个的实施例的基础上，本发明实施例提供的消息变更处理的方法第八个可选实施例中，PICH的关联信道可以包括：
辅助公用控制物理信道S-CCPCH，S-CCPCH与PICH关联，或
高速共享控制信道HS-SCCH，HS-SCCH与PICH关联，或
高速物理下行链路共享信道HS-PDSCH，HS-PDSCH与PICH关联。
本实施例中，第一用户设备的PICH的关联信道可以是S-CCPCH，用于承载来自传输信道FACH和PCH的数据，S-CCPCH所使用的码和时隙等配置信息在小区中广播。物理层上可以根据配置把来自一条或多条的FACH与一条PCH的数据组合在一条CCTrCH上，然后再根据配置，将CCTrCH数据映射 到一条或多条S-CCPCH物理信道上。
第一用户设备的PICH的关联信道也可以是HS-SCCH，PICH与HS-SCCH具有指定的定时关系，HS-SCCH承载信令信息的下行信道，而且每用户设备最多4条HS-SCCH。HS-SCCH与HS-PDSCH关联，用于承载寻呼消息的HS-DSCH映射到该HS-PDSCH上，从而HS-DSCH与PICH存在关联关系。
又进一步地，本实施例中，将关联信道具体化为S-CCPCH或者HS-PDSCH，或者与PICH间接关联的HS-DSCH，使得本方案在实际应用中更具有可行性，并且可以根据不同情况选择关联信道，进一步提升了方案的灵活性。
为了便于理解，下面以一个具体应用场景对本发明中一种消息变更处理的方法进行详细描述，具体为：
预计小数据应用将成为一个很大的增长区域，具有数十亿连接设备的潜力。在许多情况下，相对于传统的通信业务，此类型的业务对服务需求有些不同，如对功耗和延迟的要求可以会变化。
为了应对这一需求，相关的研究建议用于该类应用的用户设备在满足数据传输时延的要求情况，可以采用长DRX，当基站发送系统消息变更通知，比如系统消息变更、终端被呼叫或地震与海啸报警系统响应时，将用于指示系统消息变更的寻呼指示加载在长DRX周期中某个PICH无线帧A的b288号比特位上，引入长DRX周期后，由于寻呼指示位于新的用户设备对应的长DRX周期中PICH无线帧的备用比特位上，因此老的用户设备不需要处理这些备用比特位上的寻呼指示，从而达到省电的目的。
为便于更好的实施本发明实施例提供的消息变更处理的方法，本发明实施例还提供一种基于上述消息变更处理方法的装置。其中名词的含义与上述消息变更处理的方法中相同，具体实现细节可以参考方法实施例中的说明。
上面对本发明实施例中消息变更处理的方法进行了描述，下面对本发明实施例中的消息变更处理的装置进行描述，请参阅图6，本发明实施例中的消息变更处理的方法的装置一个实施例包括：
第一确定模块601，用于当小区系统广播消息变更时，确定第一用户设备的寻呼时机；
第二确定模块602，用于确定第一用户设备的寻呼指示PI的比特位位于所述第一确定模块601确定的寻呼时机对应的寻呼指示信道PICH无线帧内的备用比特位至少之一，或，确定第一用户设备的寻呼指示PI为预定义的PI，其中所述预定义的PI的比特位位于所述寻呼时机对应的寻呼指示信道PICH无线帧内，所述预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示；
设置模块603，用于将所述第二确定模块602确定的所述第一用户设备的PI设置为预定值；
第一发送模块604，用于在所述第一确定模块601确定寻呼时机发送所述设置模块603设置的PI。
本实施例中，当小区系统广播消息变更时，第一确定模块601确定第一用户设备的寻呼时机，第二确定模块602确定第一用户设备的寻呼指示PI的比特位位于第一确定模块601确定的寻呼时机对应的寻呼指示信道PICH无线帧内的备用比特位至少之一，或，确定第一用户设备的寻呼指示PI为预定义的PI，其中预定义的PI的比特位位于寻呼时机对应的寻呼指示信道PICH无线帧内，预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示，设置模块603将第二确定模块602确定的第一用户设备的PI设置为预定值，在第一确定模块601确定寻呼时机第一发送模块604发送设置模块603设置的PI。
本实施例中，将用于指示小区系统消息变更的PI置于PICH无线帧的备用比特位中或者预先定义的比特位中，当小区系统消息发送变更时，基站侧通过该特殊的PI向第一用户设备指示系统消息的变更，避免第二用户设备在第一DRX周期内多次读取系统消息变更的通知消息，从而使得第二用户设备节省自身的电量，提升用户的使用体验。
可选地，在上述图6对应的实施例的基础上，本发明实施例提供的消息变更处理的装置第一个可选实施例中，所述备用比特位为所述PICH无线帧中最后12个比特。
可选地，在上述图6对应的实施例的基础上，本发明实施例提供的消息变更处理的装置第二个可选实施例中，所述预定义的PI的比特位为所述PICH 无线帧中前288个比特至少之一。
其次，本实施例中，对备用比特位与预定义的PI的比特位进行解释，使该方案在实际使用中的可操作性得以提升，同时，对方案的具体情况做了具体分析，增大本方案的可行性。
请参阅图7，本发明实施例中的消息变更处理的方法的装置另一个实施例包括：
第一确定模块601，用于当小区系统广播消息变更时，确定第一用户设备的寻呼时机；
第二确定模块602，用于确定第一用户设备的寻呼指示PI的比特位位于所述第一确定模块601确定的寻呼时机对应的寻呼指示信道PICH无线帧内的备用比特位至少之一，或，确定第一用户设备的寻呼指示PI为预定义的PI，其中所述预定义的PI的比特位位于所述寻呼时机对应的寻呼指示信道PICH无线帧内，所述预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示；
设置模块603，用于将所述第二确定模块602确定的所述第一用户设备的PI设置为预定值；
第一发送模块604，用于在所述第一确定模块601确定寻呼时机发送所述设置模块603设置的PI；
其中，所述第一确定模块601包括：
第一确定单元6011，用于根据所述第一用户设备的识别码，所述第一用户设备使用的第一非连续接收DRX周期的长度和第二用户设备使用的第二DRX周期的长度确定所述第一用户设备的PI位于所述PICH无线帧的帧号，所述第一用户设备的PI位于所述PICH无线帧的帧号指示所述寻呼时机，其中，所述第二DRX周期的长度小于第一DRX周期的长度。
再次，本实施例中，提出一种可以确定PICH无线帧中寻呼时机计算的方法，使得方案的实际应用更具有可行性。
请参阅图8，本发明实施例中的消息变更处理的方法的装置另一个实施例包括：
第一确定模块601，用于当小区系统广播消息变更时，确定第一用户设备 的寻呼时机；
第二确定模块602，用于确定第一用户设备的寻呼指示PI的比特位位于所述第一确定模块601确定的寻呼时机对应的寻呼指示信道PICH无线帧内的备用比特位至少之一，或，确定第一用户设备的寻呼指示PI为预定义的PI，其中所述预定义的PI的比特位位于所述寻呼时机对应的寻呼指示信道PICH无线帧内，所述预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示；
设置模块603，用于将所述第二确定模块602确定的所述第一用户设备的PI设置为预定值；
第一发送模块604，用于在所述第一确定模块601确定寻呼时机发送所述设置模块603设置的PI；
其中，所述第一确定模块601包括：
第二确定单元6012，用于根据如下寻呼时机计算公式，确定所述第一用户设备的PI位于的所述PICH无线帧的帧号，所述第一用户设备的PI位于所述PICH无线帧的帧号指示所述寻呼时机，所述寻呼时机计算公式：
Paging Occasion＝{IMSI mod(DRX cycle length2 div PBP)}*PBP+n*DRX cycle length1+Frame Offset
其中，Paging Occasion表示寻呼时机，IMSI为国际移动用户识别码，mod表示取模运算，div表示除法运算，PBP为寻呼块周期，n是小区系统帧号且n＝0,1,2…SFN，Frame Offset为帧偏移量，DRX cycle length1表示为第一用户设备使用的DRX长度，即为第一DRX周期的长度，DRX cycle length2表示为第二用户设备使用的DRX长度，即为第二DRX周期的长度，且DRX cycle length2小于DRX cycle length1。
进一步地，本实施例中，具体提出了两种寻呼时机计算公式，其一为现有技术中计算寻呼时机的方式，另一为本方案中构建的一种新的寻呼时机计算公式，由此可以大幅度的提升方案在实际应用的可操作性。
请参阅图9，本发明实施例中的消息变更处理的方法的装置另一个实施例包括：
第一确定模块601，用于当小区系统广播消息变更时，确定第一用户设备 的寻呼时机；
第二确定模块602，用于确定第一用户设备的寻呼指示PI的比特位位于所述第一确定模块601确定的寻呼时机对应的寻呼指示信道PICH无线帧内的备用比特位至少之一，或，确定第一用户设备的寻呼指示PI为预定义的PI，其中所述预定义的PI的比特位位于所述寻呼时机对应的寻呼指示信道PICH无线帧内，所述预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示；
设置模块603，用于将所述第二确定模块602确定的所述第一用户设备的PI设置为预定值；
第一发送模块604，用于在所述第一确定模块601确定寻呼时机发送所述设置模块603设置的PI；
其中，所述第一确定模块601包括：
第二确定单元6012，用于根据如下寻呼时机计算公式，确定所述第一用户设备的PI位于的所述PICH无线帧的帧号，所述第一用户设备的PI位于所述PICH无线帧的帧号指示所述寻呼时机，所述寻呼时机计算公式：
Paging Occasion＝{IMSI mod(DRX cycle length2 div PBP)}*PBP+n*DRX cycle length1+Frame Offset
其中，Paging Occasion表示寻呼时机，IMSI为国际移动用户识别码，mod表示取模运算，div表示除法运算，PBP为寻呼块周期，n是小区系统帧号且n＝0,1,2…SFN，Frame Offset为帧偏移量，DRX cycle length1表示为第一用户设备使用的DRX长度，即为第一DRX周期的长度，DRX cycle length2表示为第二用户设备使用的DRX长度，即为第二DRX周期的长度，且DRX cycle length2小于DRX cycle length1。
其中，所述第二确定模块602包括：
第三确定单元6021，用于根据寻呼指示的个数以及所述第一用户设备的识别码确定所述第一用户设备的PI在所述PICH无线帧中的备用比特位的编号，其中，所述寻呼指示的个数根据所述第一用户设备的寻呼时机对应的PICH无线帧的备用比特位个数和所述PI所占的比特位个数确定。
再进一步地，本实施例中，提出一种可以确定PICH无线帧中的备用比特 位的编号的方法，使得方案的实际应用更具有可行性。
请参阅图10，本发明实施例中的消息变更处理的方法的装置另一个实施例包括：
第一确定模块601，用于当小区系统广播消息变更时，确定第一用户设备的寻呼时机；
第二确定模块602，用于确定第一用户设备的寻呼指示PI的比特位位于所述第一确定模块601确定的寻呼时机对应的寻呼指示信道PICH无线帧内的备用比特位至少之一，或，确定第一用户设备的寻呼指示PI为预定义的PI，其中所述预定义的PI的比特位位于所述寻呼时机对应的寻呼指示信道PICH无线帧内，所述预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示；
设置模块603，用于将所述第二确定模块602确定的所述第一用户设备的PI设置为预定值；
第一发送模块604，用于在所述第一确定模块601确定寻呼时机发送所述设置模块603设置的PI；
计算模块605，用于根据如下备用比特位公式计算所述第二确定模块602确定所述第一用户设备的PI在PICH无线帧中的备用比特位的编号：
Figure PCTCN2015075131-appb-000009
其中，q表示所述第一用户设备的PI在PICH无线帧中的备用比特位的编号，Vpi根据所述第一用户设备的识别号与Np计算得到的值，SFN表示系统帧号，mod表示取模运算，Np表示每个PICH无线帧内PI的个数，Np’表示所述第一用户设备通过备用比特位发射的PI个数。
更进一步地，本实施例中，根据备用比特位公式来确定第一用户设备的PI在帧号对应的PICH无线帧中的备用比特位的编号，对方案的实现具有重要意义，而针对PI包含的比特位位数的不同可以制定不同的计算方法，对方案的实现具有实用性强。适用范围大的好处。
请参阅图11，本发明实施例中的消息变更处理的方法的装置另一个实施例包括：
第一确定模块601，用于当小区系统广播消息变更时，确定第一用户设备 的寻呼时机；
第二确定模块602，用于确定第一用户设备的寻呼指示PI的比特位位于所述第一确定模块601确定的寻呼时机对应的寻呼指示信道PICH无线帧内的备用比特位至少之一，或，确定第一用户设备的寻呼指示PI为预定义的PI，其中所述预定义的PI的比特位位于所述寻呼时机对应的寻呼指示信道PICH无线帧内，所述预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示；
设置模块603，用于将所述第二确定模块602确定的所述第一用户设备的PI设置为预定值；
第一发送模块604，用于在所述第一确定模块601确定寻呼时机发送所述设置模块603设置的PI；
计算模块605，用于根据如下备用比特位公式计算所述第二确定模块602确定所述第一用户设备的PI在PICH无线帧中的备用比特位的编号：
Figure PCTCN2015075131-appb-000010
其中，q表示所述第一用户设备的PI在PICH无线帧中的备用比特位的编号，Vpi根据所述第一用户设备的识别号与Np计算得到的值，SFN表示系统帧号，mod表示取模运算，Np表示每个PICH无线帧内PI的个数，Np’表示所述第一用户设备通过备用比特位发射的PI个数；
第二发送模块606，用于所述第一发送模块604发送PI后，在第一用户设备的PI的PICH的关联信道上发送寻呼消息，以通知所述第一用户设备系统广播消息发生了变更。
再进一步地，本实施例中，提供了当小区系统消息发生变更时基站通知第一用户设备的方法，这样，使得方案在实现过程中更具有可操作性，同时，对于第一用户设备而言，可以通过相关信道接收小区系统消息变更的信息，使得第一设备读取消息的时效性更强。
可选地，在上述图11对应的实施例的基础上，本发明实施例提供的消息变更处理的装置第一个可选实施例中，所述第一用户设备的PI的PICH的关联信道，包括：
辅助公用控制物理信道S-CCPCH，所述S-CCPCH与所述PICH关联，或
高速共享控制信道HS-SCCH，所述HS-SCCH与所述PICH关联，或
高速物理下行链路共享信道HS-PDSCH，所述HS-PDSCH与所述PICH关联。
又进一步地，本实施例中，将关联信道具体化为S-CCPCH或者HS-PDSCH，或者与PICH间接关联的HS-DSCH，使得本方案在实际应用中更具有可行性，并且可以根据不同情况选择关联信道，进一步提升了方案的灵活性。
请参阅图12，本发明实施例中消息变更处理的装置一个实施例包括：
确定模块701，用于确定第一用户设备的寻呼时机；
监听模块702，用于在所述第一确定模块701确定的寻呼时机上监听对应的寻呼指示信道PICH；
解析模块703，用于解析监听模块702监听的PICH无线帧内的备用比特位至少之一并获取PI的预定值，或，解析PICH无线帧内预定义的PI并获取PI的预定值，所述预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示；
指示模块704，用于当所述解析模块703解析得到的PI的预定值为1时，则指示系统广播消息发生了变更。
本实施例中，确定模块701确定第一用户设备的寻呼时机，监听模块702在第一确定模块701确定的寻呼时机上监听对应的寻呼指示信道PICH，解析模块703解析监听模块702监听的PICH无线帧内的备用比特位至少之一并获取PI的预定值，或，解析PICH无线帧内预定义的PI并获取PI的预定值，预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示，当解析模块703解析得到的PI的预定值为1时，指示模块704则指示系统广播消息发生了变更。
本实施例中，将用于指示小区系统消息变更的PI置于PICH无线帧的备用比特位中或者预先定义的比特位中，当小区系统消息发送变更时，基站侧通过该特殊的PI向第一用户设备指示系统消息的变更，避免第二用户设备在第一DRX周期内多次读取系统消息变更的通知消息，从而使得第二用户设备节省自身的电量，提升用户的使用体验。
可选地，在上述图12对应的实施例的基础上，本发明实施例提供的消息变更处理的装置第一个可选实施例中，所述备用比特位为所述PICH无线帧中最后12个比特。
可选地，在上述图12对应的实施例的基础上，本发明实施例提供的消息变更处理的装置第二个可选实施例中，所述预定义的PI的比特位为所述PICH无线帧中前288个比特至少之一。
其次，本实施例中，对备用比特位与预定义的PI的比特位进行解释，使该方案在实际使用中的可操作性得以提升，同时，对方案的具体情况做了具体分析，增大本方案的可行性。
请参阅图13，本发明实施例中消息变更处理的装置另一个实施例包括：
确定模块701，用于确定第一用户设备的寻呼时机；
监听模块702，用于在所述第一确定模块701确定的寻呼时机上监听对应的寻呼指示信道PICH；
解析模块703，用于解析监听模块702监听的PICH无线帧内的备用比特位至少之一并获取PI的预定值，或，解析PICH无线帧内预定义的PI并获取PI的预定值，所述预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示；
指示模块704，用于当所述解析模块703解析得到的PI的预定值为1时，则指示系统广播消息发生了变更；
其中，所述确定模块701包括：
第一确定单元7011，用于根据所述第一用户设备的识别码，所述第一用户设备使用的第一非连续接收DRX周期的长度和第二用户设备使用的第二DRX周期的长度确定所述第一用户设备的PI位于所述PICH无线帧的帧号，所述第一用户设备的PI位于所述PICH无线帧的帧号指示所述寻呼时机，其中，所述第二DRX周期的长度小于第一DRX周期的长度。
再次，本实施例中，提出一种可以确定PICH无线帧中寻呼时机计算的方法，使得方案的实际应用更具有可行性。
请参阅图14，本发明实施例中消息变更处理的装置另一个实施例包括：
确定模块701，用于确定第一用户设备的寻呼时机；
监听模块702，用于在所述第一确定模块701确定的寻呼时机上监听对应的寻呼指示信道PICH；
解析模块703，用于解析监听模块702监听的PICH无线帧内的备用比特位至少之一并获取PI的预定值，或，解析PICH无线帧内预定义的PI并获取PI的预定值，所述预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示；
指示模块704，用于当所述解析模块703解析得到的PI的预定值为1时，则指示系统广播消息发生了变更；
其中，所述确定模块701包括：
第二确定单元7012，用于根据如下寻呼时机计算公式，确定所述第一用户设备的PI位于的所述PICH无线帧的帧号，所述第一用户设备的PI位于所述PICH无线帧的帧号指示所述寻呼时机，所述寻呼时机计算公式：
Paging Occasion＝{IMSI mod(DRX cycle length2 div PBP)}*PBP+n*DRX cycle length1+Frame Offset
其中，Paging Occasion表示寻呼时机，IMSI为国际移动用户识别码，mod表示取模运算，div表示除法运算，PBP为寻呼块周期，n是小区系统帧号且n＝0,1,2…SFN，Frame Offset为帧偏移量，DRX cycle length1表示为第一用户设备使用的DRX长度，即为第一DRX周期的长度，DRX cycle length2表示为第二用户设备使用的DRX长度，即为第二DRX周期的长度，且DRX cycle length2小于DRX cycle length1。
进一步地，本实施例中，具体提出了两种寻呼时机计算公式，其一为现有技术中计算寻呼时机的方式，另一为本方案中构建的一种新的寻呼时机计算公式，由此可以大幅度的提升方案在实际应用的可操作性。
请参阅图15，本发明实施例中消息变更处理的装置另一个实施例包括：
确定模块701，用于确定第一用户设备的寻呼时机；
监听模块702，用于在所述第一确定模块701确定的寻呼时机上监听对应的寻呼指示信道PICH；
解析模块703，用于解析监听模块702监听的PICH无线帧内的备用比特位至少之一并获取PI的预定值，或，解析PICH无线帧内预定义的PI并获取 PI的预定值，所述预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示；
指示模块704，用于当所述解析模块703解析得到的PI的预定值为1时，则指示系统广播消息发生了变更；
其中，所述确定模块701包括：
第二确定单元7012，用于根据如下寻呼时机计算公式，确定所述第一用户设备的PI位于的所述PICH无线帧的帧号，所述第一用户设备的PI位于所述PICH无线帧的帧号指示所述寻呼时机，所述寻呼时机计算公式：
Paging Occasion＝{IMSI mod(DRX cycle length2 div PBP)}*PBP+n*DRX cycle length1+Frame Offset
其中，Paging Occasion表示寻呼时机，IMSI为国际移动用户识别码，mod表示取模运算，div表示除法运算，PBP为寻呼块周期，n是小区系统帧号且n＝0,1,2…SFN，Frame Offset为帧偏移量，DRX cycle length1表示为第一用户设备使用的DRX长度，即为第一DRX周期的长度，DRX cycle length2表示为第二用户设备使用的DRX长度，即为第二DRX周期的长度，且DRX cycle length2小于DRX cycle length1；
其中，所述解析模块703包括：
第一解析单元7031，用于根据寻呼指示的个数以及所述第一用户设备的识别码解析所述第一用户设备的PI在所述PICH无线帧中的备用比特位的编号，其中，所述寻呼指示的个数根据所述第一用户设备的寻呼时机对应的PICH无线帧的备用比特位个数和所述PI所占的比特位个数确定。
再进一步地，本实施例中，提出一种可以确定PICH无线帧中的备用比特位的编号的方法，使得方案的实际应用更具有可行性。
请参阅图16，本发明实施例中消息变更处理的装置另一个实施例包括：
确定模块701，用于确定第一用户设备的寻呼时机；
监听模块702，用于在所述第一确定模块701确定的寻呼时机上监听对应的寻呼指示信道PICH；
解析模块703，用于解析监听模块702监听的PICH无线帧内的备用比特位至少之一并获取PI的预定值，或，解析PICH无线帧内预定义的PI并获取 PI的预定值，所述预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示；
指示模块704，用于当所述解析模块703解析得到的PI的预定值为1时，则指示系统广播消息发生了变更；
计算模块705，用于根据如下备用比特位公式计算所述解析模块703解析的第一用户设备的PI在PICH无线帧中的备用比特位的编号：
Figure PCTCN2015075131-appb-000011
其中，q表示所述第一用户设备的PI在PICH无线帧中的备用比特位的编号，VPI根据所述第一用户设备的识别号与Np计算得到的值，SFN表示系统帧号，mod表示取模运算，Np表示每个PICH无线帧内PI的个数，Np’表示所述第一用户设备通过备用比特位发射的PI个数；
其中，所述解析模块703包括：
第一解析单元7031，用于根据寻呼指示的个数以及所述第一用户设备的识别码解析所述第一用户设备的PI在所述PICH无线帧中的备用比特位的编号，其中，所述寻呼指示的个数根据所述第一用户设备的寻呼时机对应的PICH无线帧的备用比特位个数和所述PI所占的比特位个数确定。
更进一步地，本实施例中，根据备用比特位公式来确定第一用户设备的PI在帧号对应的PICH无线帧中的备用比特位的编号，对方案的实现具有重要意义，而针对PI包含的比特位位数的不同可以制定不同的计算方法，对方案的实现具有实用性强。适用范围大的好处。
请参阅图17，本发明实施例中消息变更处理的装置另一个实施例包括：
确定模块701，用于确定第一用户设备的寻呼时机；
监听模块702，用于在所述第一确定模块701确定的寻呼时机上监听对应的寻呼指示信道PICH；
解析模块703，用于解析监听模块702监听的PICH无线帧内的备用比特位至少之一并获取PI的预定值，或，解析PICH无线帧内预定义的PI并获取PI的预定值，所述预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示；
指示模块704，用于当所述解析模块703解析得到的PI的预定值为1时， 则指示系统广播消息发生了变更；
计算模块705，用于根据如下备用比特位公式计算所述解析模块703解析的第一用户设备的PI在PICH无线帧中的备用比特位的编号：
Figure PCTCN2015075131-appb-000012
其中，q表示所述第一用户设备的PI在PICH无线帧中的备用比特位的编号，VPI根据所述第一用户设备的识别号与Np计算得到的值，SFN表示系统帧号，mod表示取模运算，Np表示每个PICH无线帧内PI的个数，Np’表示所述第一用户设备通过备用比特位发射的PI个数；
接收模块706，用于在所述指示模块704指示指示系统广播消息发生了变更后，从PICH的关联信道上接收寻呼消息，并根据所述寻呼消息进行系统广播消息变更；或，
直接获取变更的系统广播消息。
其中，所述解析模块703包括：
第一解析单元7031，用于根据寻呼指示的个数以及所述第一用户设备的识别码解析所述第一用户设备的PI在所述PICH无线帧中的备用比特位的编号，其中，所述寻呼指示的个数根据所述第一用户设备的寻呼时机对应的PICH无线帧的备用比特位个数和所述PI所占的比特位个数确定。
再进一步地，本实施例中，提供了两种在第一用户设备侧读取新的系统广播消息的方法，其中，直接读取MIB后判断系统消息是否发生变化，从而将系统消息进行更新的方法为本发明提供的一种新方法，由此为本方案增加了可行性，同时，灵活性也得以提升。
可选地，在上述图17对应的实施例的基础上，本发明实施例提供的消息变更处理的装置第一个可选实施例中，所述PICH的关联信道包括：
辅助公用控制物理信道S-CCPCH，所述S-CCPCH与所述PICH关联，或
高速共享控制信道HS-SCCH，所述HS-SCCH与所述PICH关联，或
高速物理下行链路共享信道HS-PDSCH，所述HS-PDSCH与所述PICH关联。
又进一步地，本实施例中，将关联信道具体化为S-CCPCH或者HS-PDSCH，或者与PICH间接关联的HS-DSCH，使得本方案在实际应用中 更具有可行性，并且可以根据不同情况选择关联信道，进一步提升了方案的灵活性。
请参阅图18，本发明实施例还提供了一种消息变更处理的系统，包括：基站1801和用户设备1802；
所述基站1801用于：当小区系统广播消息变更时，所述基站1801确定第一用户设备1802的寻呼时机；确定第一用户设备1802的寻呼指示PI的比特位位于所述寻呼时机对应的寻呼指示信道PICH无线帧内的备用比特位至少之一，或，确定第一用户设备1802的寻呼指示PI为预定义的PI，其中所述预定义的PI的比特位位于所述寻呼时机对应的寻呼指示信道PICH无线帧内，所述预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示；将所述第一用户设备1802的PI设置为预定值；所述基站1801在所述寻呼时机发送所述PI。
所述用户设备1802用于：用户设备1802确定第一用户设备1802的寻呼时机；用户设备1802监听所述寻呼时机对应的寻呼指示信道PICH；解析PICH无线帧内的备用比特位至少之一并获取PI的预定值，或，解析PICH无线帧内预定义的PI并获取PI的预定值，所述预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示；当所述PI的预定值为1时，则指示系统广播消息发生了变更。
本实施例中，将用于指示小区系统消息变更的PI置于PICH无线帧的备用比特位中或者预先定义的比特位中，当小区系统消息发送变更时，基站侧通过该特殊的PI向第一用户设备指示系统消息的变更，避免第二用户设备在第一DRX周期内多次读取系统消息变更的通知消息，从而使得第二用户设备节省自身的电量，提升用户的使用体验。
图19是本发明实施例提供的一种基站结构示意图，该基站1900可因配置或性能不同而产生比较大的差异，可以包括一个或一个以上中央处理器(CPU，central processing units)1922(例如，一个或一个以上处理器)和存储器1932，一个或一个以上存储应用程序1942或数据1944的存储介质1930(例如一个或一个以上海量存储设备)。其中，存储器1932和存储介质1930可以是短暂存储或持久存储。存储在存储介质1930的程序可以包括一个或一个以上模块 (图示没标出)，每个模块可以包括对服务器中的一系列指令操作。更进一步地，中央处理器1922可以设置为与存储介质1930通信，在服务器1900上执行存储介质1930中的一系列指令操作。
基站1900还可以包括一个或一个以上电源1926，一个或一个以上有线或无线网络接口1950，一个或一个以上输入输出接口1958，和/或，一个或一个以上操作系统1941，例如Windows ServerTM，Mac OS XTM，UnixTM,LinuxTM，FreeBSDTM等等。
在本发明实施例中，该基站所包括的中央处理器1922还具有以下功能：
当小区系统广播消息变更时，确定第一用户设备的寻呼时机；
确定第一用户设备的寻呼指示PI的比特位位于所述寻呼时机对应的寻呼指示信道PICH无线帧内的备用比特位至少之一，或，确定第一用户设备的寻呼指示PI为预定义的PI，其中所述预定义的PI的比特位位于所述寻呼时机对应的寻呼指示信道PICH无线帧内，所述预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示；
将所述第一用户设备的PI设置为预定值；
该基站所包括的有线或无线网络接口1950或输入输出接口1958还具有以下功能：
在所述寻呼时机发送所述PI。
上述实施例中由基站所执行的步骤可以基于该图19所示的基站结构。
本发明实施例还提供了一种用户设备，如图20所示，为了便于说明，仅示出了与本发明实施例相关的部分，具体技术细节未揭示的，请参照本发明实施例方法部分。该用户设备可以为包括手机、平板电脑、PDA(Personal Digital Assistant，个人数字助理)、POS(Point of Sales，销售终端)、车载电脑等任意终端设备，以用户设备为手机为例：
图20示出的是与本发明实施例提供的终端相关的手机的部分结构的框图。参考图20，手机包括：射频(Radio Frequency，RF)电路2010、存储器2020、输入单元2030、显示单元2040、传感器2050、音频电路2060、无线保真(wireless fidelity，WiFi)模块2070、处理器2080、以及电源2090等部件。本领域技术人员可以理解，图20中示出的手机结构并不构成对手机的限定， 可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置。
下面结合图20对手机的各个构成部件进行具体的介绍：
RF电路2010可用于收发信息或通话过程中，信号的接收和发送，特别地，将基站的下行信息接收后，给处理器2080处理；另外，将设计上行的数据发送给基站。通常，RF电路2010包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器(Low Noise Amplifier，LNA)、双工器等。此外，RF电路2010还可以通过无线通信与网络和其他设备通信。上述无线通信可以使用任一通信标准或协议，包括但不限于全球移动通讯系统(Global System of Mobile communication，GSM)、通用分组无线服务(General Packet Radio Service，GPRS)、码分多址(Code Division Multiple Access，CDMA)、宽带码分多址(Wideband Code Division Multiple Access,WCDMA)、长期演进(Long Term Evolution，LTE)、电子邮件、短消息服务(Short Messaging Service，SMS)等。
存储器2020可用于存储软件程序以及模块，处理器2080通过运行存储在存储器2020的软件程序以及模块，从而执行手机的各种功能应用以及数据处理。存储器2020可主要包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序(比如声音播放功能、图像播放功能等)等；存储数据区可存储根据手机的使用所创建的数据(比如音频数据、电话本等)等。此外，存储器2020可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他易失性固态存储器件。
输入单元2030可用于接收输入的数字或字符信息，以及产生与手机的用户设置以及功能控制有关的键信号输入。具体地，输入单元2030可包括触控面板2031以及其他输入设备2032。触控面板2031，也称为触摸屏，可收集用户在其上或附近的触摸操作(比如用户使用手指、触笔等任何适合的物体或附件在触控面板2031上或在触控面板2031附近的操作)，并根据预先设定的程式驱动相应的连接装置。可选的，触控面板2031可包括触摸检测装置和触摸控制器两个部分。其中，触摸检测装置检测用户的触摸方位，并检测触摸操作带来的信号，将信号传送给触摸控制器；触摸控制器从触摸检测装置上接收触 摸信息，并将它转换成触点坐标，再送给处理器2080，并能接收处理器2080发来的命令并加以执行。此外，可以采用电阻式、电容式、红外线以及表面声波等多种类型实现触控面板2031。除了触控面板2031，输入单元2030还可以包括其他输入设备2032。具体地，其他输入设备2032可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆等中的一种或多种。
显示单元2040可用于显示由用户输入的信息或提供给用户的信息以及手机的各种菜单。显示单元2040可包括显示面板2041，可选的，可以采用液晶显示器(Liquid Crystal Display，LCD)、有机发光二极管(Organic Light-Emitting Diode,OLED)等形式来配置显示面板2041。进一步的，触控面板2031可覆盖显示面板2041，当触控面板2031检测到在其上或附近的触摸操作后，传送给处理器2080以确定触摸事件的类型，随后处理器2080根据触摸事件的类型在显示面板2041上提供相应的视觉输出。虽然在图20中，触控面板2031与显示面板2041是作为两个独立的部件来实现手机的输入和输入功能，但是在某些实施例中，可以将触控面板2031与显示面板2041集成而实现手机的输入和输出功能。
手机还可包括至少一种传感器2050，比如光传感器、运动传感器以及其他传感器。具体地，光传感器可包括环境光传感器及接近传感器，其中，环境光传感器可根据环境光线的明暗来调节显示面板2041的亮度，接近传感器可在手机移动到耳边时，关闭显示面板2041和/或背光。作为运动传感器的一种，加速计传感器可检测各个方向上(一般为三轴)加速度的大小，静止时可检测出重力的大小及方向，可用于识别手机姿态的应用(比如横竖屏切换、相关游戏、磁力计姿态校准)、振动识别相关功能(比如计步器、敲击)等；至于手机还可配置的陀螺仪、气压计、湿度计、温度计、红外线传感器等其他传感器，在此不再赘述。
音频电路2060、扬声器2061，传声器2062可提供用户与手机之间的音频接口。音频电路2060可将接收到的音频数据转换后的电信号，传输到扬声器2061，由扬声器2061转换为声音信号输出；另一方面，传声器2062将收集的声音信号转换为电信号，由音频电路2060接收后转换为音频数据，再将音频 数据输出处理器2080处理后，经RF电路2010以发送给比如另一手机，或者将音频数据输出至存储器2020以便进一步处理。
WiFi属于短距离无线传输技术，手机通过WiFi模块2070可以帮助用户收发电子邮件、浏览网页和访问流式媒体等，它为用户提供了无线的宽带互联网访问。虽然图20示出了WiFi模块2070，但是可以理解的是，其并不属于手机的必须构成，完全可以根据需要在不改变发明的本质的范围内而省略。
处理器2080是手机的控制中心，利用各种接口和线路连接整个手机的各个部分，通过运行或执行存储在存储器2020内的软件程序和/或模块，以及调用存储在存储器2020内的数据，执行手机的各种功能和处理数据，从而对手机进行整体监控。可选的，处理器2080可包括一个或多个处理单元；优选的，处理器2080可集成应用处理器和调制解调处理器，其中，应用处理器主要处理操作系统、用户界面和应用程序等，调制解调处理器主要处理无线通信。可以理解的是，上述调制解调处理器也可以不集成到处理器2080中。
手机还包括给各个部件供电的电源2090(比如电池)，优选的，电源可以通过电源管理系统与处理器2080逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。
尽管未示出，手机还可以包括摄像头、蓝牙模块等，在此不再赘述。
在本发明实施例中，该用户设备所包括的处理器2080还具有以下功能：
确定第一用户设备的寻呼时机；
监听所述寻呼时机对应的寻呼指示信道PICH；
解析PICH无线帧内的备用比特位至少之一并获取PI的预定值，或，解析PICH无线帧内预定义的PI并获取PI的预定值，所述预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示I；
当所述PI的预定值为1时，则指示系统广播消息发生了变更。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
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。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元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全部或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)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。
以上对本发明所提供的一种消息变更处理的方法进行了详细介绍，本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的技术人员，依据本发明实施例的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制。

Claims (39)

  1. 一种消息变更处理的方法，其特征在于，包括：
    当小区系统广播消息变更时，确定第一用户设备的寻呼时机；
    确定第一用户设备的寻呼指示PI的比特位位于所述寻呼时机对应的寻呼指示信道PICH无线帧内的备用比特位至少之一，或，确定第一用户设备的寻呼指示PI为预定义的PI，其中所述预定义的PI的比特位位于所述寻呼时机对应的寻呼指示信道PICH无线帧内，所述预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示；
    将所述第一用户设备的PI设置为预定值；
    在所述寻呼时机发送所述PI。
  2. 根据权利要求1所述的方法，其特征在于，所述备用比特位为所述PICH无线帧中最后12个比特。
  3. 根据权利要求1所述的方法，其特征在于，所述预定义的PI的比特位为所述PICH无线帧中前288个比特至少之一。
  4. 根据权利要求1所述的方法，其特征在于，所述确定第一用户设备的寻呼时机，包括：
    根据所述第一用户设备的识别码，所述第一用户设备使用的第一非连续接收DRX周期的长度和第二用户设备使用的第二DRX周期的长度确定所述第一用户设备的PI位于所述PICH无线帧的帧号，所述第一用户设备的PI位于所述PICH无线帧的帧号指示所述寻呼时机，其中，所述第二DRX周期的长度小于第一DRX周期的长度。
  5. 根据权利要求1-4中任意一项所述的方法，其特征在于，所述确定第一用户设备的寻呼时机，包括：
    根据如下寻呼时机计算公式，确定所述第一用户设备的PI位于的所述PICH无线帧的帧号，所述第一用户设备的PI位于所述PICH无线帧的帧号指示所述寻呼时机，所述寻呼时机计算公式：
    Paging Occasion＝{IMSI mod(DRX cycle length2div PBP)}*PBP+n*DRX cycle length1+Frame Offset
    其中，Paging Occasion表示寻呼时机，IMSI为国际移动用户识别码，mod 表示取模运算，div表示除法运算，PBP为寻呼块周期，n是小区系统帧号且n＝0,1,2…SFN，Frame Offset为帧偏移量，DRX cycle length1表示为第一用户设备使用的DRX长度，即为第一DRX周期的长度，DRX cycle length2表示为第二用户设备使用的DRX长度，即为第二DRX周期的长度，且DRX cycle length2小于DRX cycle length1。
  6. 根据权利要求1至5中任意一项所述的方法，其特征在于，所述确定第一用户设备的寻呼指示PI的比特位位于所述寻呼时机对应的寻呼指示信道PICH无线帧内的备用比特位至少之一，包括：
    根据寻呼指示的个数以及所述第一用户设备的识别码确定所述第一用户设备的PI在所述PICH无线帧中的备用比特位的编号，其中，所述寻呼指示的个数根据所述第一用户设备的寻呼时机对应的PICH无线帧的备用比特位个数和所述PI所占的比特位个数确定。
  7. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    根据如下备用比特位公式计算所述第一用户设备的PI在PICH无线帧中的备用比特位的编号：
    Figure PCTCN2015075131-appb-100001
    其中，q表示所述第一用户设备的PI在PICH无线帧中的备用比特位的编号，Vpi根据所述第一用户设备的识别号与Np计算得到的值，SFN表示系统帧号，mod表示取模运算，Np表示每个PICH无线帧内PI的个数，Np’表示所述第一用户设备通过备用比特位发射的PI个数。
  8. 根据权利要求1至7中任意一项所述的方法，其特征在于，所述方法还包括：
    在所述第一用户设备的PI的PICH的关联信道上发送寻呼消息，以通知所述第一用户设备系统广播消息发生了变更。
  9. 根据权利要求8所述的方法，其特征在于，所述第一用户设备的PI的PICH的关联信道，包括：
    辅助公用控制物理信道S-CCPCH，所述S-CCPCH与所述PICH关联，或
    高速共享控制信道HS-SCCH，所述HS-SCCH与所述PICH关联，或
    高速物理下行链路共享信道HS-PDSCH，所述HS-PDSCH与所述PICH 关联。
  10. 一种消息变更处理的方法，其特征在于，包括：
    确定第一用户设备的寻呼时机；
    监听所述寻呼时机对应的寻呼指示信道PICH；
    解析PICH无线帧内的备用比特位至少之一并获取PI的预定值，或，解析PICH无线帧内预定义的PI并获取PI的预定值，所述预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示；
    当所述PI的预定值为1时，则指示系统广播消息发生了变更。
  11. 根据权利要求10所述的方法，其特征在于，所述备用比特位为所述PICH无线帧中最后12个比特。
  12. 根据权利要求10所述的方法，其特征在于，所述预定义的PI的比特位为所述PICH无线帧中前288个比特至少之一。
  13. 根据权利要求10所述的方法，其特征在于，所述确定第一用户设备的寻呼时机，包括：
    根据所述第一用户设备的识别码，所述第一用户设备使用的第一非连续接收DRX周期的长度和第二用户设备使用的第二DRX周期的长度确定所述第一用户设备的PI位于所述PICH无线帧的帧号，所述第一用户设备的PI位于所述PICH无线帧的帧号指示所述寻呼时机，其中，所述第二DRX周期的长度小于第一DRX周期的长度。
  14. 根据权利要求10-13任意一项所述的方法，其特征在于，所述确定第一用户设备的寻呼时机，包括：
    根据如下寻呼时机计算公式，确定所述第一用户设备的PI位于的所述PICH无线帧的帧号，所述第一用户设备的PI位于所述PICH无线帧的帧号指示所述寻呼时机，所述寻呼时机计算公式：
    Paging Occasion＝{IMSI mod(DRX cycle length2div PBP)}*PBP+n*DRX cycle length1+Frame Offset
    其中，Paging Occasion表示寻呼时机，IMSI为国际移动用户识别码，mod表示取模运算，div表示除法运算，PBP为寻呼块周期，n是小区系统帧号且n＝0,1,2…SFN，Frame Offset为帧偏移量，DRX cycle length1表示为第一用户 设备使用的DRX长度，即为第一DRX周期的长度，DRX cycle length2表示为第二用户设备使用的DRX长度，即为第二DRX周期的长度，且DRX cycle length2小于DRX cycle length1。
  15. 根据权利要求10-14任意一项所述的方法，其特征在于，所述解析PICH无线帧内的备用比特位至少之一，包括：
    根据寻呼指示的个数以及所述第一用户设备的识别码解析所述第一用户设备的PI在所述PICH无线帧中的备用比特位的编号，其中，所述寻呼指示的个数根据所述第一用户设备的寻呼时机对应的PICH无线帧的备用比特位个数和所述PI所占的比特位个数确定。
  16. 根据权利要求10所述的方法，其特征在于，所述方法还包括：
    根据如下备用比特位公式计算所述第一用户设备的PI在PICH无线帧中的备用比特位的编号：
    Figure PCTCN2015075131-appb-100002
    其中，q表示所述第一用户设备的PI在PICH无线帧中的备用比特位的编号，VPI根据所述第一用户设备的识别号与Np计算得到的值，SFN表示系统帧号，mod表示取模运算，Np表示每个PICH无线帧内PI的个数，Np’表示所述第一用户设备通过备用比特位发射的PI个数。
  17. 根据权利要求10-16中任意一项所述的方法，其特征在于，所述方法还包括：
    从所述PICH的关联信道上接收寻呼消息，并根据所述寻呼消息进行系统广播消息变更；或，
    直接获取变更的系统广播消息。
  18. 根据权利要求17所述的方法，其特征在于，所述PICH的关联信道包括：
    辅助公用控制物理信道S-CCPCH，所述S-CCPCH与所述PICH关联，或
    高速共享控制信道HS-SCCH，所述HS-SCCH与所述PICH关联，或
    高速物理下行链路共享信道HS-PDSCH，所述HS-PDSCH与所述PICH关联。
  19. 一种消息变更处理的装置，其特征在于，包括：
    第一确定模块，用于当小区系统广播消息变更时，确定第一用户设备的寻呼时机；
    第二确定模块，用于确定第一用户设备的寻呼指示PI的比特位位于所述第一确定模块确定的寻呼时机对应的寻呼指示信道PICH无线帧内的备用比特位至少之一，或，确定第一用户设备的寻呼指示PI为预定义的PI，其中所述预定义的PI的比特位位于所述寻呼时机对应的寻呼指示信道PICH无线帧内，所述预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示；
    设置模块，用于将所述第二确定模块确定的所述第一用户设备的PI设置为预定值；
    第一发送模块，用于在所述第一确定模块确定寻呼时机发送所述设置模块设置的PI。
  20. 根据权利要求19所述的装置，其特征在于，所述备用比特位为所述PICH无线帧中最后12个比特。
  21. 根据权利要求19所述的装置，其特征在于，所述预定义的PI的比特位为所述PICH无线帧中前288个比特至少之一。
  22. 根据权利要求19所述的装置，其特征在于，所述第一确定模块包括：
    第一确定单元，用于根据所述第一用户设备的识别码，所述第一用户设备使用的第一非连续接收DRX周期的长度和第二用户设备使用的第二DRX周期的长度确定所述第一用户设备的PI位于所述PICH无线帧的帧号，所述第一用户设备的PI位于所述PICH无线帧的帧号指示所述寻呼时机，其中，所述第二DRX周期的长度小于第一DRX周期的长度。
  23. 根据权利要求19-22中任意一项所述的装置，其特征在于，所述第一确定模块包括：
    第二确定单元，用于根据如下寻呼时机计算公式，确定所述第一用户设备的PI位于的所述PICH无线帧的帧号，所述第一用户设备的PI位于所述PICH无线帧的帧号指示所述寻呼时机，所述寻呼时机计算公式：
    Paging Occasion＝{IMSI mod(DRX cycle length2div PBP)}*PBP+n*DRX cycle length1+Frame Offset
    其中，Paging Occasion表示寻呼时机，IMSI为国际移动用户识别码，mod表示取模运算，div表示除法运算，PBP为寻呼块周期，n是小区系统帧号且n＝0,1,2…SFN，Frame Offset为帧偏移量，DRX cycle length1表示为第一用户设备使用的DRX长度，即为第一DRX周期的长度，DRX cycle length2表示为第二用户设备使用的DRX长度，即为第二DRX周期的长度，且DRX cycle length2小于DRX cycle length1。
  24. 根据权利要求19-23中任意一项所述的装置，其特征在于，所述第二确定模块包括：
    第三确定单元，用于根据寻呼指示的个数以及所述第一用户设备的识别码确定所述第一用户设备的PI在所述PICH无线帧中的备用比特位的编号，其中，所述寻呼指示的个数根据所述第一用户设备的寻呼时机对应的PICH无线帧的备用比特位个数和所述PI所占的比特位个数确定。
  25. 根据权利要求19所述的装置，其特征在于，所述装置还包括：
    计算模块，用于根据如下备用比特位公式计算所述第二确定模块确定所述第一用户设备的PI在PICH无线帧中的备用比特位的编号：
    Figure PCTCN2015075131-appb-100003
    其中，q表示所述第一用户设备的PI在PICH无线帧中的备用比特位的编号，Vpi根据所述第一用户设备的识别号与Np计算得到的值，SFN表示系统帧号，mod表示取模运算，Np表示每个PICH无线帧内PI的个数，Np’表示所述第一用户设备通过备用比特位发射的PI个数。
  26. 根据权利要求19-25中任意一项所述的装置，其特征在于，所述装置还包括：
    第二发送模块，用于在所述第一用户设备的PI的PICH的关联信道上发送寻呼消息，以通知所述第一用户设备系统广播消息发生了变更。
  27. 根据权利要求26所述的装置，其特征在于，所述第一用户设备的PI的PICH的关联信道，包括：
    辅助公用控制物理信道S-CCPCH，所述S-CCPCH与所述PICH关联，或
    高速共享控制信道HS-SCCH，所述HS-SCCH与所述PICH关联，或
    高速物理下行链路共享信道HS-PDSCH，所述HS-PDSCH与所述PICH 关联。
  28. 一种消息变更处理的装置，其特征在于，包括：
    确定模块，用于确定第一用户设备的寻呼时机；
    监听模块，用于在所述第一确定模块确定的寻呼时机上监听对应的寻呼指示信道PICH；
    解析模块，用于解析监听模块监听的PICH无线帧内的备用比特位至少之一并获取PI的预定值，或，解析PICH无线帧内预定义的PI并获取PI的预定值，所述预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示；
    指示模块，用于当所述解析模块解析得到的PI的预定值为1时，则指示系统广播消息发生了变更。
  29. 根据权利要求28所述的装置，其特征在于，所述备用比特位为所述PICH无线帧中最后12个比特。
  30. 根据权利要求28所述的装置，其特征在于，所述预定义的PI的比特位为所述PICH无线帧中前288个比特至少之一。
  31. 根据权利要求28所述的装置，其特征在于，所述确定模块包括：
    第一确定单元，用于根据所述第一用户设备的识别码，所述第一用户设备使用的第一非连续接收DRX周期的长度和第二用户设备使用的第二DRX周期的长度确定所述第一用户设备的PI位于所述PICH无线帧的帧号，所述第一用户设备的PI位于所述PICH无线帧的帧号指示所述寻呼时机，其中，所述第二DRX周期的长度小于第一DRX周期的长度。
  32. 根据权利要求28-31中任意一项所述的装置，其特征在于，所述确定模块包括：
    第二确定单元，用于根据如下寻呼时机计算公式，确定所述第一用户设备的PI位于的所述PICH无线帧的帧号，所述第一用户设备的PI位于所述PICH无线帧的帧号指示所述寻呼时机，所述寻呼时机计算公式：
    Paging Occasion＝{IMSI mod(DRX cycle length2div PBP)}*PBP+n*DRX cycle length1+Frame Offset
    其中，Paging Occasion表示寻呼时机，IMSI为国际移动用户识别码，mod 表示取模运算，div表示除法运算，PBP为寻呼块周期，n是小区系统帧号且n＝0,1,2…SFN，Frame Offset为帧偏移量，DRX cycle length1表示为第一用户设备使用的DRX长度，即为第一DRX周期的长度，DRX cycle length2表示为第二用户设备使用的DRX长度，即为第二DRX周期的长度，且DRX cycle length2小于DRX cycle length1。
  33. 根据权利要求28-32中任意一项所述的装置，其特征在于，所述解析模块包括：
    第一解析单元，用于根据寻呼指示的个数以及所述第一用户设备的识别码解析所述第一用户设备的PI在所述PICH无线帧中的备用比特位的编号，其中，所述寻呼指示的个数根据所述第一用户设备的寻呼时机对应的PICH无线帧的备用比特位个数和所述PI所占的比特位个数确定。
  34. 根据权利要求28所述的装置，其特征在于，所述装置还包括：
    计算模块，用于根据如下备用比特位公式计算所述解析模块解析的第一用户设备的PI在PICH无线帧中的备用比特位的编号：
    Figure PCTCN2015075131-appb-100004
    其中，q表示所述第一用户设备的PI在PICH无线帧中的备用比特位的编号，VPI根据所述第一用户设备的识别号与Np计算得到的值，SFN表示系统帧号，mod表示取模运算，Np表示每个PICH无线帧内PI的个数，Np’表示所述第一用户设备通过备用比特位发射的PI个数。
  35. 根据权利要求28-34中任意一项所述的装置，其特征在于，所述装置还包括：
    接收模块，用于在所述指示模块指示指示系统广播消息发生了变更后，从PICH的关联信道上接收寻呼消息，并根据所述寻呼消息进行系统广播消息变更；或，
    直接获取变更的系统广播消息。
  36. 根据权利要求28所述的装置，其特征在于，所述PICH的关联信道包括：
    辅助公用控制物理信道S-CCPCH，所述S-CCPCH与所述PICH关联，或
    高速共享控制信道HS-SCCH，所述HS-SCCH与所述PICH关联，或
    高速物理下行链路共享信道HS-PDSCH，所述HS-PDSCH与所述PICH关联。
  37. 一种消息变更处理的装置，其特征在于，包括：输入装置、输出装置、存储器和处理器，
    其中，所述处理器用于执行如下步骤：
    当小区系统广播消息变更时，确定第一用户设备的寻呼时机；
    确定第一用户设备的寻呼指示PI的比特位位于所述寻呼时机对应的寻呼指示信道PICH无线帧内的备用比特位至少之一，或，确定第一用户设备的寻呼指示PI为预定义的PI，其中所述预定义的PI的比特位位于所述寻呼时机对应的寻呼指示信道PICH无线帧内，所述预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示；
    将所述第一用户设备的PI设置为预定值；
    其中，所述输出装置用于执行如下步骤：
    在所述寻呼时机发送所述PI。
  38. 一种消息变更处理的装置，其特征在于，包括：输入装置、输出装置、存储器和处理器，
    其中，所述处理器用于执行如下步骤：
    确定第一用户设备的寻呼时机；
    监听所述寻呼时机对应的寻呼指示信道PICH；
    解析PICH无线帧内的备用比特位至少之一并获取PI的预定值，或，解析PICH无线帧内预定义的PI并获取PI的预定值，所述预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示；
    当所述PI的预定值为1时，则指示系统广播消息发生了变更。
  39. 一种消息变更处理的系统，其特征在于，包括：基站和用户设备，
    所述基站用于：当小区系统广播消息变更时，确定第一用户设备的寻呼时机；确定第一用户设备的寻呼指示PI的比特位位于所述寻呼时机对应的寻呼指示信道PICH无线帧内的备用比特位至少之一，或，确定第一用户设备的寻呼指示PI为预定义的PI，其中所述预定义的PI的比特位位于所述寻呼时机对应的寻呼指示信道PICH无线帧内，所述预定义的PI是由网络侧指示的或者 网络侧和用户设备约定的用于指示系统广播消息变更的指示；将所述第一用户设备的PI设置为预定值；在所述寻呼时机发送所述PI；
    所述用户设备用于：确定第一用户设备的寻呼时机；监听所述寻呼时机对应的寻呼指示信道PICH；解析PICH无线帧内的备用比特位至少之一并获取PI的预定值，或，解析PICH无线帧内预定义的PI并获取PI的预定值，所述预定义的PI是由网络侧指示的或者网络侧和用户设备约定的用于指示系统广播消息变更的指示；当所述PI的预定值为1时，则指示系统广播消息发生了变更。
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