CN102917444B - The method and device of discontinuous reception under idle condition - Google Patents

Abstract

The present invention is applicable to the communication field, and provides a method, device and system for discontinuous reception in an idle state. The method includes: sending a non-access stratum NAS message to a mobility management entity MME, and the NAS message includes: user equipment UE specific The value of the discontinuous reception DRX cycle and the time unit of the DRX cycle, so that the MME carries the value of the DRX cycle and the time unit of the DRX cycle in the core network CN side paging message and forwards it to the eNB eNB: calculate a paging time according to the value of the DRX cycle and the time unit of the DRX cycle, and receive a paging message on the radio access network RAN side sent by the eNB at the paging time. The technical solution provided by the invention has the advantages of extending the DRX cycle and saving UE power.

Description

Method and device for discontinuous reception in idle state

technical field

The invention belongs to the communication field, in particular to a method and device for discontinuous reception in an idle state.

Background technique

In the Long Term Evolution (LTE) standard, the radio access network (Radio Access Network, RAN) side defines two states of a user equipment (User Equipment, UE): an idle state and a connected state. The UE in the idle state can receive system information broadcast, monitor the paging channel, cell reselection, etc. At this time, the evolved base station (Evolved Node Base, eNB) does not save the radio resource control (Radio Resource Control, RRC) context of the UE ; In the connected state, an RRC connection has been established between the UE and the eNB, and the RRC context of the UE is saved. The UE in the connected state can perform system information capture, measurement and measurement reporting, and data reception with the network And send, monitor control channel, etc. In addition, in order to save the battery of the UE and improve resource utilization, the eNB can configure a discontinuous reception (Discontinuous Reception, DRX) cycle for the UE according to the activity status of the UE.

In the LTE standard, different DRX mechanisms are adopted for the UE in the idle state and the UE in the connected state. The DRX mechanism adopted by the UE in the idle state may specifically be: UE in the Non-Access Stratum (NonAccess Stratum, NAS) In the message, the UE-specific DRX cycle T1 is reported to the Mobility Management Entity (MME). When the UE is called, the MME sends the Core Network (Core Network, CN) side paging message, the message contains UE-specific DRX cycle T1 and UE identification (UE_ID), eNB compares T1 and T2, where T2 is the default call cycle of the cell, and selects a shorter cycle to calculate the paging time And send a paging message on the RAN side to the UE at this paging time. The specific calculation method of the paging time can be obtained by using the following formulas 1.1 and 1.2.

SFN mod T = (T div N)*(UE_ID mod N) 1.1;

i_s = floor(UE_ID/N) mod Ns 1.2;

Its UE_ID represents the identity of the UE, which is equal to IMSI mod 1024, mod represents modulo operation, and IMSI is the International Mobile Subscriber Identity. Ns is max(1, nB/T), which is the maximum value between 1 and nB/T. N is equal to min(T, nB), the minimum of T and nB. nB can be 4T, 2T, T, T/2, T/4, T/8, T/16, T/32, etc. T is the paging cycle. SFN is the obtained system frame number, and i_s is the subframe number, and the system frame number and subframe number are used to obtain the paging time.

In the process of realizing the present invention, it is found that the technical solutions of the prior art have the following problems:

The unit of cycle in the prior art defaults to milliseconds. It can be seen from the regulations in the LTE standard that the maximum paging cycle is only 512ms, so the technical solution of the prior art has a short paging cycle, and the UE needs to Wake up to monitor the paging message, which is not conducive to the UE's power saving.

Contents of the invention

The purpose of the embodiments of the present invention is to provide a method and device for discontinuous reception in an idle state. The above-mentioned technical solution about DRX can be applied to a larger paging cycle, which is beneficial to power saving of UE.

On the one hand, an embodiment of the present invention provides a method for discontinuously receiving DRX in an idle state, the method comprising:

Send a non-access stratum NAS message to the mobility management entity MME, the NAS message includes: the value of the user equipment UE-specific discontinuous reception DRX cycle and the time unit of the DRX cycle, so that the MME combines the value of the DRX cycle and the time unit of the DRX cycle The time unit of the DRX cycle is carried in the paging message on the CN side of the core network and forwarded to the evolved base station eNB;

The paging time is calculated according to the value of the DRX cycle and the time unit of the DRX cycle, and the paging message on the radio access network RAN side sent by the eNB is received at the paging time.

Another aspect of the embodiments of the present invention provides a method for paging an idle state user equipment UE, the method including:

Receive a paging message on the CN side of the core network sent by the mobility management entity MME, where the paging message on the CN side includes: the value of the UE-specific DRX cycle and the time unit of the DXR cycle;

calculating a paging time according to the value of the DRX cycle and the time unit of the DRX cycle; and sending a radio access network RAN side paging message to the UE at the paging time.

On the other hand, the embodiment of the present invention also provides a device for discontinuously receiving DRX in an idle state, the device comprising:

A sending unit, configured to send a non-access stratum NAS message to a mobility management entity MME, where the NAS message includes: a value of a user equipment UE-specific discontinuous reception DRX cycle and a time unit of the DRX cycle, so that the MME sends the The value of the DRX cycle and the time unit of the DRX cycle are carried in the paging message on the CN side of the core network and forwarded to the evolved base station eNB;

a calculation unit, configured to calculate the paging time according to the value of the DRX cycle and the time unit of the DRX cycle;

The receiving unit is configured to receive the radio access network RAN side paging message sent by the eNB at the paging moment.

On the other hand, the embodiment of the present invention provides an apparatus for paging user equipment UE in an idle state, the apparatus includes:

The receiving unit is configured to receive a paging message on the CN side of the core network sent by the mobility management entity MME, where the paging message on the CN side includes: the value of the UE-specific DRX cycle and the time unit of the DXR cycle;

a calculation unit, configured to calculate the paging time according to the value of the DRX cycle and the time unit of the DRX cycle;

A sending unit, configured to send a radio access network RAN side paging message to the UE at the paging time.

In the embodiment of the present invention, the technical solution can not only set the value of the DRX cycle, but also set the unit of the cycle (such as setting seconds or minutes, etc.), based on the value and time unit of the above cycle, a larger paging frame can be obtained value, the paging cycle (DXR cycle) of the UE can be extended to save the power of the UE, and the calculation method of the paging time is not changed, which does not affect the normal reception of the paging message by the UE in the prior art, and realizes a comparison with the prior art. Good compatibility.

Description of drawings

FIG. 1 is a flowchart of a method for discontinuous reception in an idle state provided by a specific embodiment of the present invention;

Fig. 2 is a schematic diagram of SFN expansion provided by a specific embodiment of the present invention;

Fig. 3 is a schematic diagram of a paging time provided by a specific embodiment of the present invention;

FIG. 4 is a flowchart of a method for paging an idle state UE according to a specific embodiment of the present invention;

FIG. 5 is a flow chart of a UE paging method provided by an embodiment of the present invention;

FIG. 6 is a structural diagram of a device for discontinuous reception in an idle state provided by a specific embodiment of the present invention;

Fig. 7 is a structural diagram of an apparatus for paging an idle state UE according to a specific embodiment of the present invention.

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

The specific embodiment of the present invention provides a method for discontinuous reception in an idle state. The technical scenario implemented by the method is: the method is completed between the UE, MME and eNB. The method is shown in Figure 1 and specifically includes:

S11. Send a NAS message to the MME, the NAS message includes: a UE-specific value of the DRX cycle and a time unit of the cycle; so that the MME carries the value of the DRX cycle and the time unit of the DRX cycle in the The paging message on the CN side of the core network is forwarded to the evolved base station eNB;

S12. Calculate the paging time according to the value of the UE-specific DRX cycle and the time unit of the cycle, and receive the RAN-side paging message sent by the eNB at the paging time.

Optionally, the method for implementing S12 may specifically be: calculate the low-order bits of the system frame number SFN by using the value of the DRX cycle; convert the unit of the DRX cycle into the high-order bits of the SFN; The lower bits determine the paging frame, and the paging time is determined based on the paging frame. In addition, the above method of calculating the lower bits of the SFN may use the paging time calculation formula in the prior art (that is, the formula 1.1 in the background art) to calculate the lower bits of the SFN. The embodiment of the present invention is equivalent to using the calculated low-order bits and high-order bits of the SFN to jointly indicate the paging frame, so that the length of the obtained paging frame is extended, which is applicable to a larger DRX cycle and is conducive to power saving of the UE. .

The decimal value corresponding to the time unit indicated by the high-order bit of the SFN can be determined according to the above-mentioned time unit and the default unit (ms) of the system, and the decimal value is converted into a binary value, and the binary value can be the high-order bit of the SFN. For example, if the time unit is seconds, the corresponding decimal value may be 1000, and the corresponding high-order bits of the SFN may be: 1111101000. In addition, in order to be compatible with the existing LTE protocol, the above-mentioned low-order bits may specifically be: the low-order 10 bits of the SFN, and the high-order bits may specifically be: bits in the SFN other than the low-order bits. The time unit of the cycle can be seconds, milliseconds or minutes, etc.

Optionally, the above method may further include: sending a radio resource control RRC connection establishment request message to the above eNB; receiving a response message of the RRC connection establishment request message sent by the eNB, the response message including: the upper extended bits of the SFN of the eNB Value; determine the current SFN of the eNB based on the value of the upper extended bit and the lower bit broadcast by the eNB, and perform synchronization with the eNB according to the current SFN of the eNB.

Optionally, the above response message may also include a system information (SI) timer parameter; the above method may also include: immediately starting the SI timer based on the SI timer parameter, and checking the system information before the SI timer expires Whether the block SIB is updated; if the SIB is updated, receive other SIB information according to the scheduling instruction in the SIB. If there is no update, it means that the SI has not changed, and the UE continues to enter the sleep state and wakes up at the UE's paging time to receive the paging message. It should be noted that the above-mentioned timer timeout is determined according to the time threshold issued by the eNB. The specific delivery method of the time threshold can be carried in the message between the eNB and the UE. The message can be any message, such as RRC Reconfiguration messages, other SIB messages or media access control (Media Access Control, MAC) layer messages, etc., the present invention is not limited to specific types of the above messages.

It should be noted that the above corresponding message may specifically be: RRC connection reconfiguration message, SIB message or MAC message, wherein the above SIB message or MAC message also includes the high-order extended bit value of the SFN of the eNB and the SI timer parameter.

In addition, considering that the DRX cycle parameters involved in the calculation still use basic values in order not to affect the UE of the previous version, and the time unit of the DRX cycle is converted into the high-order bit indication of the SFN, where the SFN extension diagram is shown in Figure 2. For example, the DRX cycle of a machine-to-machine communication user equipment (MTC-UE, also called a machine type communication user equipment) is T=32 seconds. For the period value T that participates in the calculation of the paging time, T=32 is still set. Since the default T unit of the prior art is milliseconds, the embodiment of the present invention sets the unit of T as seconds, and the time unit indicated by the upper bit of SFN should be The decimal value 1000, that is, the extended 10 bits of the high order of the SFN is a binary value 1111101000, and the low 10 bits of the SFN are still the same as in the prior art. Of course, those skilled in the art understand that the time unit can be selected arbitrarily, not limited to converting milliseconds into seconds, but also minutes or even hours. For example, when the time unit is minutes, it is 60,000 times longer than the default time unit of milliseconds, and the value indicated by the upper bit of the SFN is 60,000.

In addition, the method provided by the embodiment of the present invention also adds an SI timer, because in the prior art, the notification of SI update occurs in the default paging cycle of the cell, and the MTC-UE that adopts the extended DRX cycle is in the default paging cycle of the cell. It may be in a sleep state during the cycle, and the paging message of SI update notification cannot be received. The schematic diagram of the paging time is shown in Figure 3, where T represents the default DRX cycle, MP represents the modification period, and PF represents the paging frame. The SI contains some configuration information of the paging channel. If the configuration information of the paging channel changes and the UE does not receive the valid SI in time, the UE cannot receive the paging message normally. After the RRC connection is established and the extended DRX cycle is determined to be used, the eNB configures a SI validity timer, and the UE starts the timer after receiving the parameters of the timer, and before the timer expires, the UE actively wakes up to receive SIB1 , and check whether the valuetag value in SIB1 is the same as the previously stored value. If they are different, it means that the SI has changed, and receive other SIB information required by the UE according to the scheduling instructions in SIB1; if they are the same, it means that the SI has not changed. The UE continues to sleep and wakes up at the UE's paging time to receive the paging message.

The method provided by the specific embodiments of the present invention can not only set the value of the DRX cycle, but also set the time unit of the cycle (such as setting seconds or minutes), and calculate the paging frame through the time unit and the value of the DRX cycle. As far as the existing technology only relies on the value of the DRX cycle to obtain the paging frame, the calculated value of the paging frame is larger and can be used for a longer DRX cycle, so the paging cycle (DXR cycle) of the UE can be extended through the above solution , saving the power of the UE, and the calculation method of the paging time is not changed, which does not affect the normal reception of the paging message by the UE of the previous version, and achieves better compatibility with the existing technology.

The specific embodiment of the present invention also provides a method for paging an idle state UE, the method is completed by the eNB, the method is shown in Figure 4, including:

S41. Receive a paging message on the CN side of the core network sent by the mobility management entity MME, where the paging message on the CN side includes: a value of a UE-specific DRX cycle and a time unit of the DXR cycle;

S42. Calculate a paging time according to the value of the DRX cycle and the time unit of the DRX cycle; send a radio access network RAN side paging message to the UE at the paging time.

Optionally, the method for implementing S42 may specifically be: use the numerical value of the DRX cycle to calculate the low-order bits of the system frame number SFN; convert the unit of the DRX cycle into the high-order bits of the SFN; bits and the lower bits of the SFN determine a paging frame, and determine a paging time based on the paging frame. In addition, for the specific method of calculating the low-order bits and the high-order bits, refer to the related description in the realization of S12, which will not be repeated here.

Optionally, the above method may further include: receiving a radio resource control RRC connection establishment request message sent by the UE; sending a response message to the RRC connection establishment request message to the UE, where the response message includes: a system frame number SFN The high-order extended bit value, so that the UE determines the current SFN of the eNB based on the high-order extended bit value and the low-order bit broadcast by the eNB, and performs synchronization with the eNB according to the current SFN of the eNB.

Optionally, the above method also includes:

Receive an initial context request message sent by the MME, where the initial context request message includes: indication information indicating that the UE can use the extended DRX cycle; or the CN side paging message further includes: indicating that the UE can use the extended DRX cycle The indication information of the DRX cycle.

It should be noted that the above indication information may be any form of indication information.

Optionally, the above response message includes: RRC connection reconfiguration message, SIB message or MAC message.

Optionally, the above response message may also include: an SI timer parameter.

The method provided by the embodiment of the present invention not only depends on the value of the DRX cycle, but also needs the time unit of the DRX cycle when calculating the paging time, so it can extend the DRX cycle, has the advantage of saving power, and also ensures the paging time The calculation formula of is unchanged, so that the UE of the previous version can still normally receive the paging message according to the existing protocol, and achieve better compatibility with the existing technology.

Specific embodiments of the present invention provide an embodiment, this embodiment also provides a UE paging method, the method is completed between the UE, MME and eNB, the response message is an RRC connection reconfiguration message as an example, wherein the paging The call method is used in the idle state of the UE, as shown in Figure 5, including:

S51. The UE sends an RRC connection establishment request message to the eNB;

S52. The NAS message sent by the UE to the MME, the message carries information about the UE, including the UE-specific DRX cycle and the time unit of the cycle, and also needs to include any form of indication information indicating that the UE can use the extended DRX cycle .

The above indication message may be, for example, an MTC indicator or a delay tolerant indicator or a lowpower indicator, etc.;

S53. The initial context request (Initial context request) message sent by the MME to the eNB. In the message, the MME sends some information about the UE to the eNB. The information may include: information corresponding to the radio access bearer of the UE, and capability information of the UE Etc., it is necessary to add "any form of indication information indicating that the UE can use the extended DRX cycle";

S54. The eNB sends an RRC connection reconfiguration message (RRC connection reconfiguration) to the UE, and the message includes: the high-order extended bit value of the SFN of the eNB and the SI timer parameter;

S55. When the UE is called, the paging message on the CN side is sent by the MME to the eNB. The paging message needs to contain the following parameters: UE-specific DRX cycle, time unit corresponding to the DRX cycle, and "means that the UE can Any form of indication to use an extended DRX cycle”;

S56. After the eNB receives the paging message from the CN side, the eNB will select the UE-specific DRX cycle (including the cycle value and the time unit of the cycle) to calculate the paging call time;

S57. The eNB sends a paging message on the RAN side to the UE at the calculated paging time, and the UE will also use the UE-specific paging cycle to calculate the paging time, and wake up at the paging time to receive the paging message sent by the eNB.

It should be noted that, for the specific calculation method of the above paging time, please refer to the relevant description in S12 above. In addition, the above-mentioned high-order extended bit value of the SFN of the eNB can be used to make the UE broadcast based on the high-order extended bit value and the eNB. The lower bits of the eNB determine the current SFN of the eNB, and perform synchronization with the eNB according to the current SFN of the eNB; the above SI timer parameters can be used to enable the UE to immediately start the SI timer based on the SI timer parameters, and in the Check whether the SIB is updated before the SI timer expires; if the SIB is updated, receive other SIB information according to the scheduling instruction in the SIB. Since the UE has received the high-order extended bits of the eNB's SFN, it can obtain the current SFN of the eNB through the indication of the high-order extended bits combined with the low-order bits broadcast by the eNB in the prior art, so that the current SFN of the eNB is extended, indicating The frame number can be longer. Therefore, after the DRX cycle is extended, the UE can perform synchronization to the eNB based on the current SFN of the eNB.

The method provided by the embodiment of the present invention not only depends on the value of the DRX cycle, but also needs the time unit of the DRX cycle when calculating the paging time, so it can extend the DRX cycle, has the advantage of saving power, and also ensures the paging time The calculation formula of is unchanged, so that the UE of the previous version can still receive the paging message normally according to the existing protocol.

An embodiment of the present invention also provides a device for discontinuous reception in an idle state, as shown in Figure 6, including:

The sending unit 61 is configured to send a non-access stratum NAS message to a mobility management entity MME, where the NAS message includes: a value of a user equipment UE-specific discontinuous reception DRX cycle and a time unit of the DRX cycle, so that the MME sends the The value of the DRX cycle and the time unit of the DRX cycle are carried in the paging message on the CN side of the core network and forwarded to the evolved base station eNB;

A calculation unit 62, configured to calculate the paging time according to the value of the DRX cycle and the time unit of the DRX cycle;

The receiving unit 63 is configured to receive the radio access network RAN side paging message sent by the eNB at the paging moment.

Optionally, the above calculation unit includes:

A low-order calculation module 621, configured to use the value of the DRX cycle to calculate the low-order bits of the system frame number SFN;

A high-order calculation module 622, configured to convert the unit of the DRX cycle into a high-order bit of the SFN;

The paging determination module 623 is configured to determine a paging frame according to the upper bits of the SFN and the lower bits of the SFN, and determine a paging time based on the paging frame.

Optionally, the sending unit 61 in the above device is further configured to send a radio resource control RRC connection establishment request message to the eNB;

The receiving unit 63 is further configured to receive a response message of the RRC connection establishment request message sent by the eNB, where the response message includes: the high-order extended bit value of the SFN of the eNB;

The calculation unit 62 is further configured to determine the current SFN of the eNB based on the value of the upper extended bit and the lower bit broadcast by the eNB, and perform synchronization with the eNB according to the current SFN of the eNB.

Optionally, the above response message may also include a system information SI timer parameter, and the above device may also include:

A starting unit 64, configured to start the SI timer immediately based on the SI timer parameter;

The timing checking unit 65 is configured to check whether the SIB is updated before the SI timer expires; if the SIB is updated, receive other SIB information according to the scheduling instruction in the SIB.

It should be noted that the sending unit 61 or the receiving unit 63 may be an interface. The calculation unit 62 may be a processor, and may include processor units such as a low-order calculation module 621 , a high-order calculation module 622 , and a paging determination module 623 . These processors or their internal units can be realized by hardware, such as logic integrated circuits.

The device provided by the specific embodiment of the present invention can not only set the value of the DRX cycle, but also set the time unit of the cycle (such as setting seconds or minutes, etc.), so it can extend the paging cycle (DXR cycle) of the UE and save the UE's time. The calculation method of the paging time has not changed, and it does not affect the normal reception of paging messages by UEs of previous versions.

An embodiment of the present invention provides an apparatus for paging user equipment UE in an idle state. As shown in FIG. 7 , the apparatus includes:

The receiving unit 71 is configured to receive a paging message on the CN side of the core network sent by the mobility management entity MME, where the paging message on the CN side includes: the value of the UE-specific DRX cycle and the time unit of the DXR cycle;

A calculation unit 72, configured to calculate the paging time according to the value of the DRX cycle and the time unit of the DRX cycle;

The sending unit 73 is configured to send a radio access network RAN side paging message to the UE at the paging time.

Optionally, the above calculation unit 72 includes:

A low-order calculation module 721, configured to use the value of the DRX cycle to calculate the low-order bits of the system frame number SFN;

A high-order calculation module 722, configured to convert the unit of the DRX cycle into a high-order bit of the SFN;

The paging determination module 723 is configured to determine a paging frame according to the upper bits of the SFN and the lower bits of the SFN, and determine a paging time based on the paging frame.

Optionally, the receiving unit 71 of the above device is also configured to receive a radio resource control RRC connection establishment request message sent by the UE;

The above-mentioned sending unit 73 is further configured to send a response message of the RRC connection establishment request message to the UE, the response message includes: the value of the high-order extension bit of the system frame number SFN, so that the UE can obtain a response based on the high-order extension bit The numerical value and the lower bits broadcast by the eNB determine the current SFN of the eNB and perform synchronization with the eNB according to the current SFN of the eNB.

It should be noted that, the above-mentioned receiving unit 71 and sending unit 73 may be interfaces. The calculation unit 72 may be a processor, and may be implemented by hardware, such as a logic integrated circuit.

The device provided by the embodiment of the present invention not only depends on the value of the DRX cycle, but also needs the time unit of the DRX cycle when calculating the paging time, so it can extend the DRX cycle, has the advantage of saving power, and also ensures the paging time The calculation formula of is unchanged, so that the UE of the previous version can still normally receive the paging message according to the existing protocol, so it can be compatible with the existing protocol.

To sum up, the technical solutions provided by the embodiments of the present invention have the advantages of saving UE power and being compatible with existing protocols.

Those skilled in the art can understand that all or part of the process of the method described in this embodiment can be embodied in the form of software products, and the computer software products can be stored in a storage medium, and include several instructions to make a computer device (which can It is a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes. .

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (13)

1. the method for discontinuous reception DRX under an idle condition, it is characterised in that described method includes:

Sending non access stratum NAS message to mobile management entity MME, this NAS message includes: Yong Hushe The numerical value of the standby specific DRX cycle of UE and the unit of time of this DRX cycle so that described MME will The numerical value of described DRX cycle and the unit of time of described DRX cycle carry and disappear in the paging of core net CN side Breath is forwarded to evolved base station eNB；

Numerical value and the unit of time of described DRX cycle according to described DRX cycle calculate calling time, This calling time receives the Radio Access Network RAN side beep-page message that described eNB sends；

Wherein, the unit of time of the described numerical value according to described DRX cycle and described DRX cycle calculates and seeks The moment is exhaled to include:

The low-order bit of system frame number SFN is drawn by the numerical computations of described DRX cycle；

The unit conversion of described DRX cycle is become the high order bit of SFN；

High order bit and the low-order bit of described SFN according to described SFN determine paging frame, and based on described Paging frame determines calling time.

Method the most according to claim 1, it is characterised in that also include:

Radio resource control RRC connection establishment request message is sent to described eNB；

Receive the response message of the described RRC connection establishment request message that described eNB sends, this response message Including: the high-order extended bit numerical value of the SFN of described eNB；

Low-order bit based on described high-order extended bit numerical value and described eNB broadcast determines working as of described eNB Front SFN, performs Tong Bu according to the current SFN and described eNB of described eNB.

Method the most according to claim 2, it is characterised in that described response message also includes that system is believed Breath SI timer parameter；

Described method also includes: start SI intervalometer immediately based on described SI timer parameter, and described Check before SI timer expiry whether system information block SIB there occurs renewal；If described SIB there occurs Update, then indicate according to the scheduling in SIB and receive other SIB information.

The most according to the method in claim 2 or 3, it is characterised in that described response message includes:

RRC connects reconfiguration message, system information block SIB message or media interviews and controls MAC message.

5. the method for a paging idle condition user equipment (UE), it is characterised in that described method includes:

Receive the core net CN side beep-page message that mobile management entity MME sends, this CN side beep-page message Including: the numerical value of the specific discontinuous reception DRX period of UE and the unit of time in described DXR cycle；

Numerical value and the unit of time of described DRX cycle according to described DRX cycle calculate calling time；? Described calling time sends Radio Access Network RAN side beep-page message to described UE；

Wherein, the unit of time of the described numerical value according to described DRX cycle and described DRX cycle calculates and seeks The moment is exhaled to include:

The low-order bit of system frame number SFN is drawn by the numerical computations of described DRX cycle；

The unit conversion of described DRX cycle is become the high order bit of SFN；

High order bit and the low-order bit of described SFN according to described SFN determine paging frame, and based on described Paging frame determines calling time.

Method the most according to claim 5, it is characterised in that also include:

Receive the radio resource control RRC connection establishment request message that described UE sends；

Send the response message of described RRC connection establishment request message to described UE, this response message includes: System frame number SFN high position extended bit numerical value, so that described UE must be based on described high-order extended bit numerical value The current SFN of described eNB is determined and according to the current SFN of described eNB with the low-order bit of eNB broadcast Perform Tong Bu with described eNB.

7. according to the method described in claim 5 or 6, it is characterised in that also include:

Receiving the initial context request message that described MME sends, this initial context request message includes: Represent that described UE can use the instruction information of the DRX cycle of extension；Or

Described CN side beep-page message also includes: represent that described UE can use the finger of the DRX cycle of extension Show information.

Method the most according to claim 6, it is characterised in that described response message includes:

RRC connects reconfiguration message, system information block SIB message or media interviews and controls MAC message.

9. the device of discontinuous reception DRX under an idle condition, it is characterised in that described device includes:

Transmitting element, for sending non access stratum NAS message, this NAS to mobile management entity MME Message includes: the numerical value of the specific discontinuous reception DRX period of user equipment (UE) and this DRX cycle Unit of time so that described MME is by single to the numerical value of described DRX cycle and the time of described DRX cycle Position is carried and is forwarded to evolved base station eNB in the beep-page message of core net CN side；

Computing unit, based on the unit of time of the numerical value according to described DRX cycle and described DRX cycle Calculate calling time；

Receive unit, for receiving, at this calling time, the Radio Access Network RAN side that described eNB sends Beep-page message；

Wherein, described computing unit includes:

Low level computing module, for drawing the low of system frame number SFN by the numerical computations of described DRX cycle Position bit；

High-order computing module, for becoming the high order bit of SFN by the unit conversion of described DRX cycle；

Paging determines module, for determining according to the high order bit of described SFN and the low-order bit of described SFN Paging frame, and determine calling time based on described paging frame.

Device the most according to claim 9, it is characterised in that described transmitting element, be additionally operable to Described eNB sends radio resource control RRC connection establishment request message；

Described reception unit, the described RRC connection establishment being additionally operable to receive described eNB transmission asks message Response message, this response message includes: the high-order extended bit numerical value of the SFN of described eNB；

Described computing unit, is additionally operable to based on described high-order extended bit numerical value and the low level of described eNB broadcast Bit determines the current SFN of described eNB, and performs according to the current SFN and described eNB of described eNB Synchronize.

11. devices according to claim 10, it is characterised in that

Described response message also includes system information SI timer parameter, and described device also includes:

Start unit, for starting SI intervalometer immediately based on described SI timer parameter；

Regular check unit, for checking before described SI timer expiry whether system information block SIB sends out Give birth to renewal；If described SIB there occurs renewal, then indicate according to the scheduling in SIB and receive other SIB Information.

The device of 12. 1 kinds of paging idle condition user equipment (UE)s, it is characterised in that described device includes:

Receive unit, for receiving the core net CN side beep-page message that mobile management entity MME sends, should CN side beep-page message includes: the numerical value of the specific DRX cycle of UE and the unit of time in described DXR cycle；

Computing unit, based on the unit of time of the numerical value according to described DRX cycle and described DRX cycle Calculate calling time；

Transmitting element, for sending Radio Access Network RAN side paging at described calling time to described UE Message；

Wherein, described computing unit includes:

Low level computing module, for drawing the low of system frame number SFN by the numerical computations of described DRX cycle Position bit；

High-order computing module, for becoming the high order bit of SFN by the unit conversion of described DRX cycle；

Paging determines module, for determining according to the high order bit of described SFN and the low-order bit of described SFN Paging frame, and determine calling time based on described paging frame.

13. devices according to claim 12, it is characterised in that

Described reception unit, the radio resource control RRC connection establishment being additionally operable to receive described UE transmission please Seek message；

Described transmitting element, is additionally operable to send the response of described RRC connection establishment request message to described UE Message, this response message includes: system frame number SFN high position extended bit numerical value, so that described UE obtains base Low-order bit in described high-order extended bit numerical value and eNB broadcast determines the current SFN of described eNB also Current SFN according to described eNB and described eNB performs Tong Bu.