CN108990149B

CN108990149B - Paging configuration method

Info

Publication number: CN108990149B
Application number: CN201710414848.2A
Authority: CN
Inventors: 周欣; 陶雄强; 姜春霞; 吕征南
Original assignee: Potevio Information Technology Co Ltd
Current assignee: Potevio Information Technology Co Ltd
Priority date: 2017-06-05
Filing date: 2017-06-05
Publication date: 2021-10-26
Anticipated expiration: 2037-06-05
Also published as: CN108990149A

Abstract

The embodiment of the invention provides a paging configuration method. The method comprises the following steps: the method comprises the steps that UE determines paging time according to a paging cycle and offset acquired in advance, wherein the paging time is the time when eNB sends paging information, the paging cycle is the cycle when the paging information is sent, and the offset is a frame number offset value in the paging cycle; and at the paging time, the UE receives paging information sent by the eNB. The method of the embodiment of the invention calculates the paging time of the paging information through the paging cycle and the offset, the paging time of the paging information of different UE is the same, and the paging information can be sent to a plurality of UE at the same paging time, thereby saving the resource expense.

Description

Paging configuration method

Technical Field

The embodiment of the invention relates to the technical field of communication, in particular to a paging configuration method.

Background

In a broadband access system, a system available bandwidth is divided into a plurality of continuous or discontinuous sub-bands, and each sub-band is transmitted by using an Orthogonal Frequency Division Multiplexing (OFDM) technology. The sub-bands are divided into a synchronous sub-band and a normal sub-band according to functions. The main function of the synchronous sub-band is the uplink and downlink synchronous and broadcast channels, and the common sub-band is used for normal service transmission.

In order to reduce cost and implementation complexity, a User Equipment (UE) supports both multi-subband and single-subband modes of operation, i.e., the UE receiver bandwidth need not be the entire system bandwidth, and may support reception of multiple or single subbands, and need not necessarily be able to receive all subbands. Depending on the hardware capabilities, the UE supports operation on all or part of the sub-bands, with the simplest (i.e., low cost) UE supporting operation on a single sub-band. In this way, the requirements on the bandwidth of the UE receiver are reduced, and the requirements on the hardware capability of the system are also reduced.

The power load monitoring communication network is a typical application scenario, and the frequency spectrum of the power load monitoring communication network is discretely distributed on a 230M frequency band.

Fig. 1 shows a schematic diagram of the distribution of frequency resources in a 230MHz frequency band of a private network in the prior art.

As can be seen from fig. 1, the frequency spectrum is comb-shaped, the frequency resources of the frequency band can be divided into a plurality of sub-bands, the sub-band of the lowest frequency point is 223.525MHz, and the sub-band of the highest frequency point is 231.65 MHz.

It is specified in 3GPP (3rd Generation Partnership Project) protocol that a network can transmit paging information to UEs in an idle state and a connected state. The paging procedure may be triggered by the core network to notify a certain UE of receiving paging information, or triggered by a base station (eNode B) to notify system information update, and notify the UE of receiving information such as an earthquake, a tsunami warning system, or a commercial mobile alert service.

In the prior art, a Paging process is performed, where a network element of a core network, such as an MME (Mobility Management Entity), sends a Paging Request (Paging Request) to a base station through an S1 interface to initiate the Paging process, where each Paging Request carries an identifier of a paged UE. After receiving the paging request, the base station decodes the content of the paging request to obtain a TAI (Tracking Area Identity) list of the UE, performs air interface paging on a cell which belongs to a Tracking Area in the list, and sends paging information to the UE under the cell.

In consideration of power saving, the UE receives paging information following a Discontinuous Reception (DRX) principle, and the base station calculates a time for transmitting the paging information according to a default DRX-related parameter in the broadcast system information, and transmits the default DRX-related parameter to all UEs in the cell, so as to instruct the UEs to calculate the time for transmitting the paging information according to the same principle. The DRX related parameters may also be the information elements in the setup request message and the base station configuration update message at S1.

Narrowband Band Internet of Things (NB-IoT) is based on LTE evolved Internet of Things technology (LTE enhanced MTC, eMTC), and with the evolution of standard technology, common user paging optimization and NB-IoT user paging optimization mechanisms are given in TS36.300 and TS36.413 protocols released in 4 months of 2016. For NB-IoT users, the paging optimization mechanism is also applicable to NB-IoT users.

In the NB-IoT system, an MME optimizes the range of issuing the paging message according to the paging auxiliary information reported by a base station, the last serving cell information, the cell coverage enhancement grade information and a preset optimization strategy. When the paging message is sent, the MME can select one or more base stations to send, and the cell list information in the paging auxiliary information can not be processed by the MME, is directly sent to the base stations along with the paging message, is processed by the base stations, and can be used for judging the sending range of the air interface paging message.

For NB-IoT user paging DRX information, its default DRX information element is included in the S1 setup request message and the eNode B configuration update message to indicate NB-IoT UE default paging DRX parameters. A Paging eDRX field is introduced in the Paging message of port S1 for indicating a Paging eDRX cycle and a Paging Time Window (PTW) in the NB-IoT system. Due to the characteristic of infrequent traffic in the NB-IoT system, a superframe (Hyper-frame) is introduced in the NB-IoT system, wherein the eDRX period in the eDRX field is in units of superframes. The NB-IoT UE first negotiates with the MME to obtain UE-specific eDRX. The UE and the network side calculate the UE identification (UE ID) through the International Mobile Subscriber Identity (IMSI) of the UE and calculate the paging time of the UE by using the same principle and configuration parameters.

The principle of determining the SFN and subframe where the paging time is located is as follows: the Hyper-frame number (Hyper-SFN) where the Paging message is located is obtained through the calculation of the Paging Hyper-frame (Paging Hyper-frame). Secondly, the possible SFN area range where the paging message of the UE is located is obtained through the calculation of the paging transmission window. And finally, obtaining the SFN and the subframe where the paging message is located by calculating PF/PO. The calculated paging time is the time when the base station sends the paging information, and is also the time when the UE monitors the base station to send the paging information.

In the paging time calculation method provided by the 3GPP protocol, the calculation of the SFN, PF, and PO where the hyper frame number and the paging transmission window start position are located are all related to the IMSI of the UE, and since the IMSI of each UE is different, the calculated PF and PO are not necessarily the same, and thus the paging time of each NB-IoT UE is not necessarily the same.

Since it can be seen from the paging time calculation method in the 3GPP protocol that the paging time of each UE is not necessarily the same. When a base station pages a plurality of UEs at different paging times in a cell, paging information needs to be sent at the paging time corresponding to each UE respectively for paging. For single subband UE, the technical solution of paging processing may further increase paging transmission delay, increase resource overhead, and affect the utilization rate of the whole system resource. In addition, the longer time delay of transmitting the paging message will cause the wireless resource to be occupied by the paging message for a long time, which will affect the normal transmission of other user service data.

Disclosure of Invention

Aiming at the defects of the prior art, the embodiment of the invention provides a paging configuration method.

The embodiment of the invention provides a paging configuration method, which comprises the following steps:

the method comprises the steps that UE determines paging time according to a paging cycle and offset acquired in advance, wherein the paging time is the time when eNB sends paging information, the paging cycle is the cycle when the paging information is sent, and the offset is a frame number offset value in the paging cycle;

and at the paging time, the UE receives paging information sent by the eNB.

The eNB determines a paging moment for sending paging information according to a preset paging cycle and an offset, wherein the paging cycle is a paging information sending cycle, and the offset is a frame number offset value in the paging cycle;

and at the paging time, the eNB sends paging information to the predetermined UE.

The UE determines a paging time according to a paging cycle and an offset, which are obtained in advance, specifically,

and determining the paging time according to the paging cycle and the offset acquired from the locally stored data.

the UE receives paging configuration information sent by the eNB, wherein the paging configuration information comprises the paging cycle;

the UE determines the paging time according to the paging cycle and the offset acquired from the locally stored data;

or,

the UE receives paging configuration information sent by the eNB, wherein the paging configuration information comprises the paging cycle and an offset;

and the UE determines the paging time according to the paging cycle and the offset.

The UE receives paging configuration information sent by the eNB, specifically,

and the UE receives system information sent by the eNB, wherein the system information carries the paging configuration information.

and the paging time is obtained by taking the modulus of the paging cycle and the remainder is the deviant, and the paging time is determined.

the UE determines the paging time according to a paging cycle, an offset and a sending frequency which are acquired in advance, wherein the sending frequency is the frequency of sending paging information in the paging cycle;

or,

the UE obtains the initial paging time of the eNB sending paging information in the paging cycle according to the paging cycle and the offset which are obtained in advance;

obtaining a re-paging time according to the pre-obtained sending times, wherein the re-paging time and the initial paging time are in the same paging cycle;

and determining the paging time according to the initial paging time and the re-paging time, wherein the paging time comprises the initial paging time and the re-paging time.

At the paging time, the UE receives paging information sent by the eNB, specifically,

and at the paging time, the UE receives the paging information transmitted by the eNB on a predetermined subband.

According to the technical scheme, the paging configuration method provided by the embodiment of the invention calculates the paging time of the paging information through the paging cycle and the offset, the paging times of the paging information of different UEs are the same, and the paging information can be sent to a plurality of UEs at the same paging time, so that the resource overhead can be saved.

Drawings

Fig. 1 is a schematic diagram of a distribution of frequency resources in a 230MHz frequency band of a private network provided in the prior art;

fig. 2 is a flowchart illustrating a paging configuration method according to an embodiment of the present invention;

fig. 3 is a flowchart illustrating a paging configuration method according to another embodiment of the present invention;

fig. 4 is a schematic signaling interaction diagram of a paging configuration method according to another embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.

Fig. 2 is a flowchart illustrating a paging configuration method according to an embodiment of the present invention.

When a core network needs to send downlink data to UE, a paging request is sent to a base station, the paging request comprises at least one IMSI, the base station receives the paging request, and sends paging information to the UE corresponding to the user identification at a preset paging moment.

It should be noted that, the principle of discontinuous reception is followed when the UE receives the paging information, the base station transmits corresponding paging information on the subband where the UE is paged at the paging time, the UE attempts to receive the paging information on the subband, and when the UE successfully receives the paging information and has its own paging in the paging information, the UE monitors the PDCCH at the time when the network side configures the PDCCH channel for the UE.

Referring to fig. 2, the method provided by the embodiment of the present invention specifically includes the following steps:

step 11, the UE determines a paging time according to a paging cycle and an offset which are acquired in advance, wherein the paging time is the time when the eNB sends paging information, the paging cycle is the cycle when the paging information is sent, and the offset is a frame number offset value in the paging cycle.

In this step, the UE may obtain in advance a parameter, a paging cycle, and an offset used to determine a paging time at which the base station transmits paging information.

The paging cycle represents a time interval of sending paging time, and the frame number offset value is used for indicating that paging information is sent on the radio frame within the paging cycle.

Optionally, the paging cycle and the frame number offset value are configured by a base station.

Alternatively, the paging cycle and the frame number offset value may be obtained by other means.

For example, the paging cycle is 2000ms, which can be configured according to practical situations, but not limited thereto.

If the paging cycle is configured in units of radio frame number, it is equivalent to a paging cycle of 40. Since the length of a radio frame in the system applied in the present invention is 25ms, if the paging cycle is 2000ms, it is equivalent to the length of 40 radio frames. When the paging cycle is 40 and the frame number offset value is 0, the radio frame numbers at which the paging information can be transmitted are 0, 40, 80, 120, etc.

As another example, assume that when the paging cycle is 40 and the frame number offset value is 1, the radio frame numbers at which the paging information can be transmitted are 1, 41, 81, 121, and so on.

In this step, the UE may calculate the radio frame number for sending the paging information according to the paging cycle and the offset, that is, the paging time may be determined, that is, the paging time may be related to the paging cycle and the offset parameter acquired by the UE and is unrelated to the IMSI of the UE itself.

Further, if the paging request includes multiple IMSIs, different UEs may use the same paging cycle and offset to obtain the same paging time.

And step 12, the UE receives the paging information sent by the eNB at the paging time.

In this step, the base station may send paging information to the UE corresponding to the IMSI in two ways at the paging time.

One way is to transmit scheduling grant information of paging information through a PDCCH and transmit paging information through a PDSCH.

Correspondingly, the UE monitors the scheduling authorization information of paging in the PDCCH and then receives the paging information carried on the PDSCH channel.

Another way is to send the paging information directly through the PDCCH.

Correspondingly, the UE monitors a downlink control information format containing paging information in the PDCCH, that is, the DCI format contains specific paging information, and the UE can obtain the paging information by analyzing the DCI format. The method effectively reduces the paging transmission time delay, reduces the overhead of system resources and is further beneficial to improving the utilization rate of the system resources.

Furthermore, because the paging time of the paging information of different UEs is the same, it indicates that the base station can send the paging information to the UEs corresponding to different IMSIs at the same paging time, and different UEs receive the paging information sent by the base station at the same paging time, thereby saving the resource overhead.

The paging configuration method provided by the embodiment at least has the following technical effects:

the paging time is calculated through the paging cycle and the offset, the paging time of the paging information of different UE is the same, a plurality of UE can receive the paging information at the same paging time, and therefore resource overhead can be saved.

On the basis of the foregoing embodiment, a paging configuration method according to still another embodiment of the present invention includes the following steps.

The eNode B carries the paging configuration information element in the system information and broadcasts the paging configuration information element to the UE of the local cell on the broadcast sub-band. The UE receives the paging configuration cell in the system information on the broadcast subband to obtain the indication information of paging transmission, i.e. knows the opportunity of transmitting the paging information on the network side.

The system information includes radio resource configuration information common to all UEs. The invention carries the paging configuration information element in the system information. Paging messages are sent in a configurable period, and the paging configuration cell contains a paging message sending period (paging cycle) and an optional sending frame number offset (offset-FrameNumber). The sending period of the paging information is a paging period parameter which indicates the network side of the UE to send the paging information. The transmission frame number offset indicates that the paging information is transmitted in the radio frame within the transmission period, and the default value is 0. The offset is optional, and when the offset parameter is not carried in the paging information, the parameter value is configured according to a default value.

Specifically, the System Information may be contained in a Master Information Block (MIB) or a System Information Block (SIB). And transmitted to the UE through the broadcast subband.

Upon receiving the system information, the UE will apply the configuration contained in the system information. The UE applies the configuration contained in the paging configuration cell, calculates the paging time for starting to send the paging message in each paging message sending period and the time for repeatedly sending the paging message according to the paging configuration cell, and receives the paging message at the times.

There are various ways for the step 11 to obtain the paging cycle and the offset, and three of them are taken as examples in this embodiment.

Alternatively, the UE may be based on the paging cycle and offset obtained from locally stored data.

Specifically, the UE may perform negotiation with the base station in advance to obtain a paging cycle and an offset, store the paging cycle and the offset to the local, and determine the paging time according to the locally stored paging cycle and offset.

Optionally, the UE receives paging configuration information sent by the eNB, where the paging configuration information includes the paging cycle; and determining the paging time according to the paging cycle and the offset acquired from the locally stored data.

Optionally, in a paging scenario, the radio resource configuration information includes paging configuration information, and the paging configuration information includes the paging cycle.

Optionally, the UE receives paging configuration information sent by the eNB, where the paging configuration information includes the paging cycle and an offset.

Optionally, the UE may check whether the paging configuration information includes the offset, and if not, may obtain the offset from locally stored data, and determine the paging time according to the paging cycle and the offset.

Optionally, the offset is optional, and when the paging configuration information does not carry the offset parameter, the parameter value is configured according to a default value.

In this step, after the paging cycle and the offset are obtained, the paging time is determined according to the obtained paging cycle and the offset, and the paging information sent by the base station is received at the paging time.

the same paging cycle and offset are obtained from the locally stored data and/or paging configuration information by different UEs, the same paging time can be obtained, the paging times of the paging information of different UEs are the same, a plurality of UEs can receive the paging information at the same paging time, and therefore resource cost can be saved.

There are various ways for determining the paging time in step 11, and this embodiment illustrates one of them.

The step 11 specifically includes:

Specifically, the modulo is also a remainder, and the UE discards the quotient by taking the paging time as a dividend and the paging cycle as a divisor, and takes a remainder as the offset value.

Alternatively, the paging occasions may be represented by radio frames.

Specifically, it can be calculated according to the following formula:

(PF mod pagingCycle)＝offset-FrameNumber

wherein pagecycle represents the paging cycle of sending the paging information, offset-FrameNumber represents that the paging information is sent in the radio frame in the sending cycle, and the default value is 0.

For example, the UE acquires a preset paging cycle of 2000ms, which is equivalent to 40 when paging cycles are configured in units of radio frame number. Since the length of a radio frame in the system applied in the present invention is 25ms, if the paging cycle is 2000ms, it is equivalent to the length of 40 radio frames. When the pagencycle is 40 and the offset-FrameNumber is 0, the PF, that is, the radio frame number SFN at which the paging information is transmitted, can be calculated according to the above formula, for example, the radio frame numbers at which the paging information can be transmitted are 0, 40, 80, 120, and the like.

As another example, if the pagencycle is 40 and the offset-FrameNumber is 1, the PF, that is, the radio frame number SFN for transmitting the paging information, may be calculated according to the above formula, where the radio frame number for transmitting the paging information is 1, 41, 81, 121, for example.

the paging time of the paging information is related to the paging cycle and the offset and is unrelated to the IMSI of the UE, so that the related calculation of the paging time can be simplified.

On the basis of the above embodiment, between step 11 and step 12, the above method further includes:

and step 13, acquiring the sending times, wherein the sending times are the times of sending the paging information in the paging cycle.

In this step, the UE obtains the number of sending times, which may be a preset number of sending times of the paging information to the UE, in addition to the paging cycle and the offset.

The sending times is the times that the base station sends paging information to the UE in one paging cycle.

For example, the number of sending times may be greater than or equal to one, which means that the number of times that the base station sends the paging information to the UE in one paging cycle may be one or multiple.

Alternatively, the number of transmissions may be obtained from locally stored data and/or paging configuration information.

Specifically, the UE may determine each paging time corresponding to the number of transmissions according to the paging cycle, the offset, and the number of transmissions.

Further, at the paging time, the UEs receive paging information respectively.

The UE obtains a system radio frame number SFN (PF-start frame) for starting to transmit paging information in one paging cycle by the following formula.

(PF-start mod pagingCycle)＝offset-FrameNumber

PF-length is a paging window length and is configured by a transmission repetition number (pagingNumRepetitions), i.e., PF-length.

The sending time of the paging information in one paging cycle is [ PF-start, PF-start +1, …, PF-start + PF-length-1 ]. Thereby, the system radio frame number SFN of the paging occasion can be determined.

In the time domain, the paging information of all UEs is transmitted at the same starting time calculated at the same period, and the number of repetitions of the transmission is the same. The paging information transmission time is configured by applying the configuration information contained in the paging configuration cell. The base station repeatedly sends the paging information to the UE from the PF-start radio frame to the PF-start + PF-length-1 radio frame in the paging sending period, and the UE receives the paging information sent by the eNode B in one paging sending period at the corresponding paging moment. By repeatedly receiving the paging information, the coverage of the UE is enhanced, and the paging success rate is improved.

In this embodiment, the UE calculates the paging time at which the paging message starts to be transmitted in each paging message transmission cycle and the time at which the paging message is repeatedly transmitted according to the paging configuration information element, and receives the paging message at these times.

In this step, the UE receives the same paging information multiple times within one paging cycle, thereby improving the reliability of the UE receiving the paging information.

by setting the sending times, a plurality of paging moments for sending the paging information can be determined, so that the UE receives the paging information for a plurality of times in one paging cycle, and the paging receiving performance is improved under the condition of cell coverage enhancement.

The step 11 is specifically as follows:

and step 111, the UE obtains the initial paging time of the eNB sending the paging information in the paging cycle according to the paging cycle and the offset which are obtained in advance.

In this step, the base station transmits paging information for a plurality of times within one paging cycle, and accordingly, the UE receives paging information for a plurality of times within one paging cycle.

Specifically, the starting paging occasion may be calculated according to the following formula.

(PF-start mod paging Cycle)＝offset-Frame Number

The PF-start indicates a radio Frame where paging information starts to be transmitted, that is, the starting paging time, the paging Cycle indicates a paging Cycle, and the offset-Frame Number is an offset.

And step 112, obtaining a re-paging time according to the pre-obtained sending times, wherein the re-paging time and the initial paging time are in the same paging cycle.

Assume that the radio frame number for transmitting paging information at the beginning of a paging cycle is 0, and assume that when paging numrepetitions is 4, the radio frame numbers for transmitting paging information again in the paging cycle are 1, 2, and 3. The radio frame number for transmitting the paging information at the beginning of the next paging cycle is 40, and similarly, the radio frame numbers for transmitting the paging information again in the paging cycle are 41, 42 and 43.

As another example, if the pagewidth is 40 and the offset-FrameNumber is 1, PF-start, that is, the radio frame number SFN at which the paging information starts to be transmitted in each paging cycle, may be calculated according to the above formula, where the radio frame number at which the paging information can be transmitted is 1, 41, 81, 121, for example. Similarly, when pagengnumrepetitions is 4, the radio frame number for retransmitting paging information in a paging cycle is 2, 3, and 4, assuming that the radio frame number for transmitting paging information at the beginning of the paging cycle is 1. The radio frame number for transmitting paging information at the beginning of the next paging cycle is 41, and the radio frame numbers for transmitting paging information again in the paging cycle are 42, 43 and 44.

Step 113, determining the paging time according to the initial paging time and the re-paging time, wherein the paging time comprises the initial paging time and the re-paging time.

In the time domain, the paging information of all UEs is transmitted at the same starting time calculated at the same period, and the number of repetitions of the transmission is the same. The paging information transmission time is configured by applying the configuration information contained in the paging configuration cell. The base station repeatedly sends the paging information to the UE from the PF-start radio frame to the PF-start + PF-length-1 radio frame in the paging sending period, and the UE receives the paging information sent by the eNode B in one paging sending period at the corresponding paging moment. By repeatedly receiving the paging information, the performance of paging reception is improved under the condition of cell coverage enhancement, and the success rate of paging is improved.

It should be noted that, due to the single subband frame structure design of the 230MHz frequency band power grid system, downlink transmission uses the first 13 OFDM symbols of a radio frame, and data scheduling transmission is performed by taking the radio frame as a unit, so that the UE does not need to know the subframe number at the paging transmission time. Specifically, in the system, a radio frame is 25ms in length, and includes 5 subframes of 5ms, each subframe including 9 OFDM symbols. The uplink and downlink resources are planned according to the characteristics of the uplink and downlink services of the system. The downlink resource is 13 symbols, which are 9 symbols of the subframe 0 and the first 4 symbols of the subframe 1. The uplink resource is the last 4 symbols of subframe 1 and subframe 2, subframe 3, and subframe 4.

Specifically, the UE receives paging information from the PF-start radio frame to the PF-start + PF-length-1 radio frame in the paging cycle.

The paging information comprises at least one user identification, and the UE tries to receive the paging information at each paging moment in a paging cycle and analyzes the received paging information.

If the UE successfully resolves the paging information, the UE stops monitoring the subsequent paging time in the paging cycle (if there is a paging time in the subsequent time in the paging cycle), and checks whether there is a paging belonging to the UE in the paging information, that is, whether the UE identifier in the paging information includes its own identifier, if so, the UE monitors the PDCCH for the time at which the PDCCH channel is configured on the network side to receive downlink data of the UE, and if not, the UE continues monitoring the paging information at the paging time in the next paging cycle.

If the UE does not successfully resolve the paging information, the UE continues to monitor the next paging occasion until the paging cycle is finished.

It should be noted that, when the UE does not successfully analyze the paging information after the paging cycle is ended or does not have its own paging in the successfully analyzed paging information, the UE continues to monitor the paging information at the paging time in the next paging cycle.

by determining a plurality of moments including the initial paging moment and the secondary paging moment, the calculation is simple and convenient, the UE receives paging information for a plurality of times in one paging cycle, the cell coverage can be enhanced, and the success rate of the UE for receiving the paging information is improved.

On the basis of the foregoing embodiment, in a paging configuration method provided in another embodiment of the present invention, the step 12 of the method specifically includes:

Specifically, the eNode B transmits the corresponding paging information on each sub-band at the paging occasion of the paging information.

And at the paging time, encapsulating the paging information on each subband according to the recorded UE to be paged on each subband, and sending the corresponding paging information on the corresponding subband according to the regulation.

That is, the base station records and maintains the subband number of the subband where the UE resides and the C-RNTI value of the UE, and encapsulates and transmits paging information according to the subband corresponding to the paging UE. And the UE receives paging information on the monitoring sub-band where the UE is positioned at the paging time, and judges whether the UE belongs to the paging of the UE according to the C-RNTI value contained in the paging information received on the sub-band where the UE is positioned.

It should be noted that the monitored sub-band refers to a sub-band in which the UE monitors the PDCCH. For the paging scenario, the monitoring subband is the camping subband of the UE, i.e. the UE indicates the subband in which the UE camps through a random access process or a subband switching signaling on the network side.

considering supporting single subband users, the eNode B sends the paging information of the UE on the monitoring subband corresponding to the UE, so as to ensure that the UE with limited receiver can receive the paging information.

Fig. 3 is a flowchart illustrating a paging configuration method according to another embodiment of the present invention.

Referring to fig. 3, the method provided by the embodiment of the present invention specifically includes the following steps:

and step 21, the eNB determines the paging time for sending the paging information according to a preset paging cycle and an offset, wherein the paging cycle is the paging information sending cycle, and the offset is a frame number offset value in the paging cycle.

The system radio Frame number SFN where the Paging message is located is obtained by calculating PF-start (PF) and PF-length. In other words, the paging occasion is determined by PF-start and PF-length. The UE obtains a system radio frame number SFN (PF-start frame) for starting to transmit paging information in one paging cycle by the following formula.

(PF-start mod pagingCycle)＝offset-FrameNumber

In the time domain, the paging information of all UEs is transmitted at the same starting time calculated at the same period, and the number of repetitions of the transmission is the same. The paging information transmission time is configured by applying the configuration information contained in the paging configuration cell. The UE receives paging information transmitted by the eNode B in one paging transmission period at a corresponding paging occasion.

In this step, the base station may calculate the radio frame number for sending the paging information according to the configured paging cycle and the offset, that is, the paging time may be determined, that is, the paging time may be related to the paging cycle and the offset parameter configured by the base station and is unrelated to the IMSI.

Further, if the paging request includes multiple IMSIs, the paging time may also be determined by using a paging cycle and an offset, and for different IMSIs, the same paging cycle and offset are used, so that one paging time may be obtained, which indicates that the base station sends paging information to UEs corresponding to different IMSIs at the same paging time.

And step 22, the eNB sends paging information to the predetermined UE at the paging time.

Furthermore, because the paging time of the paging information of different UEs is the same, the base station can transmit the paging information of a plurality of UEs at the paging time, thereby saving the resource overhead.

the paging time of the paging information is calculated through the paging cycle and the offset, the paging time of the paging information of different UEs is the same, the paging information can be sent to a plurality of UEs at the same paging time, and therefore resource overhead can be saved.

Step 23, the eNB sends paging configuration information to the UE, where the paging configuration information includes the paging cycle, so that the UE determines the paging time according to the paging cycle and an offset obtained from locally stored data.

Step 23 may occur before or after step 21, or may occur simultaneously, and the timing sequence of step 23 is not limited in this embodiment.

And step 24, the eNB sends paging configuration information to the UE, wherein the paging configuration information comprises the paging cycle and the offset, so that the UE determines the paging time according to the paging cycle and the offset.

Accordingly, step 24 may occur before or after step 21, or may occur simultaneously, and the timing sequence of step 24 is not limited in this embodiment.

The eNB sends paging configuration information, specifically,

and the eNB sends system information to the UE, wherein the system information carries the paging configuration information.

In this embodiment, the eNB sends system information to the UE, where the system information includes radio resource configuration information common to all UEs, and the system information carries a paging configuration cell. Paging information is sent in a configurable period, and a paging configuration cell of the paging information comprises a paging information sending period (paging cycle), sending repetition times (paging number repetitions) and an optional sending frame number offset (offset-FrameNumber). The sending period of the paging information is a paging period parameter which indicates the network side of the UE to send the paging information. The transmission repetition number is a number indicating the number of times paging information is repeatedly transmitted in one paging cycle. The transmission frame number offset indicates that the paging information is transmitted in the radio frame within the transmission period, and the default value is 0. The offset is optional, and when the offset parameter is not carried in the paging information, the parameter value is configured according to a default value. The eNode B carries the paging configuration information element in the system information and broadcasts the paging configuration information element to the UE of the local cell on the broadcast sub-band. The UE receives the paging configuration cell in the system information on the broadcast subband to obtain the indication information of paging transmission, i.e. knows the opportunity of transmitting the paging information on the network side.

A method of determining the paging occasion is given below. The system radio Frame number SFN where the Paging message is located is obtained by calculating PF-start (PF) and PF-length. In other words, the paging occasion is determined by PF-start and PF-length. The UE obtains a system radio frame number SFN (PF-start frame) for starting to transmit paging information in one paging cycle by the following formula.

(PF-start mod pagingCycle)＝offset-FrameNumber

The sending time of the paging information in one paging cycle is [ PF-start, PF-start +1, …, PF-start + PF-length-1 ]. The PF-start corresponds to a preset initial paging moment, and the PF-start +1 corresponds to a preset re-paging moment from the PF-start + PF-length-1. Thereby, the system radio frame number SFN of the paging occasion can be determined.

In the time domain, the paging information of all UEs is transmitted at the same starting time calculated at the same period, and the number of repetitions of the transmission is the same. The paging information transmission time is configured by applying the configuration information contained in the paging configuration cell. The base station repeatedly sends the paging information to the UE from the PF-start radio frame to the PF-start + PF-length-1 radio frame in the paging sending period, and the UE receives the paging information sent by the eNode B in one paging sending period at the corresponding paging moment.

It should be noted that, due to the single subband frame structure design of the 230MHz frequency band power grid system, downlink transmission uses the first 13 OFDM symbols of the radio frame, so the UE does not need to know the subframe number of the paging transmission time. Specifically, in the system, a radio frame is 25ms in length, and includes 5 subframes of 5ms, each subframe including 9 OFDM symbols. The uplink and downlink resources are planned according to the characteristics of the uplink and downlink services of the system. The downlink resource is 13 symbols, which are 9 symbols of the subframe 0 and the first 4 symbols of the subframe 1. The uplink resource is the last 4 symbols of subframe 1 and subframe 2, subframe 3, and subframe 4.

In the frequency domain, considering the support of single subband users, the eNode B sends the paging information of the pre-paging user on the monitoring subband corresponding to the user, so as to ensure that the user with limited receiver can receive the paging information.

For receiving paging information, the UE needs to know a paging configuration cell according to a rule specified in the time-frequency domain, then calculates a paging time for transmitting the paging information in each paging information transmission cycle according to the paging configuration cell, and receives the paging information on a monitoring subband where the UE is located at the time.

the paging configuration information is sent to the UE, so that the UE determines the paging time according to the paging configuration information, and the UE receives the paging information on the subband where the UE is located at the paging time, thereby improving the reliability of the UE for receiving the paging information.

The embodiments of the present invention can be applied to various network systems, and for better describing the embodiments, the embodiments are described by taking the application to a private network as an example on the basis of the above embodiments.

When the core network needs to send downlink data to the UE, a paging request needs to be sent to the eNB first, and the paging request comprises at least one second identifier.

Specifically, the core network will send a paging request to the base station through the MME via the S1 interface, and include at least one second identifier in the paging request for identifying the UE to be paged.

Alternatively, the first identifier may be a unique identifier, such as an IMSI, of a subscriber in the network.

The eNB receives a paging request sent by a core network element, wherein the paging request comprises at least one second identifier;

at a preset paging time, an eNB sends paging information to UE corresponding to a first identifier through a physical downlink control channel, wherein the paging information comprises at least one first identifier, so that the UE receives the paging information at the paging time;

the eNB side maintains a first identification of the UE and a sub-band number of a sub-band predetermined by the UE, and the eNB obtains the first identification of the UE and the sub-band number of the sub-band predetermined by the UE according to a second identification provided by a core network for paging the UE.

In this step, the eNB side maintains the sub-band number of the sub-band predetermined by the UE and the C-RNTI value of the UE. And finding the C-RNTI and the subband number of the UE corresponding to the IMSI according to the IMSI of the paging UE provided by the core network.

In this step, the base station sends the paging information to the UE through the physical downlink control channel, and may not send the paging information to the UE through the physical downlink shared channel.

The paging information is used for notifying the UE that downlink data arrives.

It can be understood that the base station sends the paging information to the UE through the physical downlink control channel, so that the UE may not send the authorized scheduling information for paging to the UE through the physical downlink control channel, or may not send the paging information to the UE through the physical downlink shared channel, and the base station only occupies one channel resource, so that the UE may obtain the paging information.

Accordingly, the UE receives the paging information through the physical downlink control channel, so that the UE can acquire the paging information only by monitoring the physical downlink control channel without monitoring the authorized scheduling information of the paging of the physical downlink control channel, or analyzing the authorized scheduling information and receiving the paging information of the physical downlink shared channel.

There are various ways to send paging information, and one of them is taken as an example in this embodiment.

The method specifically comprises the following steps:

at a preset initial paging moment, the eNB sends paging information to the UE corresponding to the first identifier through a physical downlink control channel;

at the preset paging again time, the eNB sends paging information to the UE corresponding to the first identifier through a physical downlink control channel;

and the re-paging time and the initial paging time are in the same paging cycle.

In consideration of cell coverage enhancement, the base station transmits paging information at a preset initial paging time and a preset re-paging time. When the UE monitors the physical downlink control channel and does not successfully analyze the paging information, the UE can continue to monitor the physical downlink control channel at the time of paging again and repeatedly receive the paging information, so that the success rate of receiving paging by the UE is improved.

In this step, the re-paging time and the initial paging time are in the same paging cycle, so that the base station sends paging information for multiple times in one paging cycle, and the success rate of receiving the paging information by the UE is improved under the cell coverage enhancement.

By sending paging information for multiple times in one paging cycle, the UE receives the paging information for multiple times in one paging cycle, so that the UE can acquire the paging information without waiting for the next paging cycle, and the receiving delay of the paging information can be reduced.

The method specifically comprises the following steps:

at a preset paging moment, the eNB sends paging information to the UE corresponding to the first identifier through a physical downlink control channel on a predetermined subband;

and the predetermined sub-band is a sub-band which is acquired by the eNB from a local storage and corresponds to the UE.

For the UE supporting the single subband operating mode, Downlink Control Information (DCI) carried on the PDCCH must be sent independently on each subband, otherwise, the single subband UE cannot monitor the PDCCH due to the limitation of the receiver bandwidth.

In this embodiment, the design is performed according to the characteristics of the frequency resource of the 230MHz frequency band, the requirement of the single subband UE operating mode, and the requirement of coverage.

Specifically, the base station maintains the C-RNTI of the UE and the subband number of the subband in which the UE resides. After receiving a paging request from the MME, determining the UE to be paged and the corresponding transmission sub-band. And summarizing the paging information to be sent on each subband according to the monitoring subband to which the UE to be paged belongs, and sending the corresponding paging information on each subband at the paging moment.

It should be noted that, for the paging scenario, the monitoring subband is the camping subband of the UE, that is, the UE indicates the subband in which the UE camps through the random access process or the subband switching signaling on the network side.

In the frequency domain, the base station sends the paging information on the sub-band corresponding to the UE in consideration of supporting single sub-band users, so as to ensure that the UE with limited receiver can receive the paging information.

The format of the paging message may be various, and this embodiment illustrates one of them.

The method specifically comprises the following steps:

and the eNB encapsulates the paging information on each predetermined sub-band in a preset paging special downlink control information format, and scrambles the CRC of the encapsulated downlink control information by using a paging identifier P-RNTI to obtain the corresponding scrambled and encapsulated downlink control information on each sub-band.

In this step, a sending format of the paging information is designed, that is, the paging information is sent in the paging dedicated downlink control information by adopting a fixed transmission format and a fixed field size.

Specifically, the physical downlink control channel may carry downlink control information. After the base station determines the first identifier, namely C-RNTI, the sending format of the paging information comprises C-RNTI of each UE. And encapsulating the paging information in the format of the special downlink control information for paging.

Specifically, the length of the paging dedicated downlink control information format may be fixed, and the CRNTI field of the user is included in the fixed number of bits.

Specifically, the CRNTI field may include multiple C-RNTIs, for example, 21 bits for the fields C-RNTI for paging user 1, C-RNTI for paging user 2, and C-RNTI for paging user 3. Wherein the length of the C-RNTI of each paging user is 7 bits, and the C-RNTI value of each paging user is indicated. In other words, in this case, the length of the paging dedicated downlink control information format is 21 bits, and the CRNTI field contains the C-RNTI values of 3 paging users. Of course, the format and content of the specific paging message may be adjusted according to the actual situation, and is not limited thereto.

It should be noted that, in this embodiment, the RNTI of the user is compressed, for example, the C-RNTI is 7 bits, and the base station jointly identifies the user by two values, namely, the subband number and the C-RNTI value. And the paging P-RNTI is 16 bits in length and has a fixed value. The C-RNTI can identify the C-RNTI value of a user on each sub-band, but cannot uniquely identify all users in the cell, and for this purpose, the sub-band number corresponding to the sub-band used for transmitting paging information and the C-RNTI value contained in the paging information are combined to identify the user to be paged.

Correspondingly, at a preset paging time, the eNB sends the scrambled and encapsulated downlink control information to the UE corresponding to the first identifier through a physical downlink control channel.

In this embodiment, a new downlink control information format dedicated for paging is proposed, where a base station and a UE transmit according to a predefined DCI format or according to a format content determined by a predefined interactive negotiation between the base station and the UE. At the preset paging time, the base station adopts the format to transmit, and the UE can also perform blind detection on the PDCCH and analyze the format of the paging dedicated downlink control information.

The paging processing method provided by the embodiment at least has the following technical effects:

the UE can quickly decode and obtain the paging information through the paging special downlink control information sent to the UE by the eNB through the physical downlink control channel.

In order to better explain the embodiment, the embodiment of the present invention is described in detail on the basis of the above embodiment.

Fig. 4 is a signaling interaction diagram illustrating a paging configuration method according to yet another embodiment of the present invention.

Referring to fig. 4, the paging procedure of the present embodiment is described as follows.

1. When the core network needs to send downlink data to the UE, a paging request is sent to the base station through the MME via the S1 interface, and the paging request includes information such as a user ID (UE-Identity, i.e., IMSI) and a Tracking Area Identity (TAI, Tracking Area Identity) list.

Specifically, the core network maintains a subscriber identity IMSI, which identifies the UE by the IMSI.

When data needs to be sent to the UE, the core network triggers a paging procedure, and includes the user ID, i.e., IMSI and TAI information, in a paging request to send to the base station.

2. And after receiving the paging request, the base station executes paging judgment.

Two main judgment aspects are as follows: first, a UE to be paged and a corresponding transmission subband are determined.

And determining the UE to be paged according to the TAI list information of the UE in the cell in the TAI list according to a preset principle, and summarizing the paging information to be sent on each subband according to the monitoring subband to which the UE to be paged belongs.

Accordingly, the base station maintains the C-RNTI of the UE and the sub-band number of the sub-band in which the UE resides, and jointly identifies the UE by the C-RNTI and the sub-band number and associates with the IMSI of the UE.

Further, the base station may identify the UE through the C-RNTI and associate with the IMSI of the UE.

In the invention, for the first identifier, the specified used length and value range determine whether the first identifier can become the unique identifier of the UE in the cell. The lengths of the first identifiers are different, and the value ranges of the first identifiers are also different, namely, the number of the users which can be uniquely identified is different. Meanwhile, the length of the first identity determines the number of paging UEs that can be included in the paging information. When the length specified by the first identifier can be used as a unique identifier of the UE in the cell, the base station can use the first identifier to identify the UE. When the first identifier has a specified length which cannot be used as a unique identifier of the UE in the cell, the base station may use the first identifier and a subband number combination to identify the UE, where the first identifier is capable of uniquely identifying the UE on one subband. In the case that the same user capacity is required in the cell, the length of the first identifier for identifying the UE in association with the subband number is shorter than the length of using only the first identifier. Since the first identifier is short, the paging information may include a larger number of paging users, but in this case, the first identifier is identified by combining with the subband number, which is slightly higher in complexity. In practical applications, it can be considered which way to identify the UEs in a cell to use depending on the cell user capacity in the system. In addition, no matter which way is adopted to identify the UE in the cell, the base station records and maintains the UE in the cell and the corresponding subband number thereof, so that the base station can schedule the UE.

For example, when the first identity is C-RNTI, the base station defines the length of the C-RNTI and determines whether the C-RNTI can become the unique identity of the UE in the cell by using the range of the C-RNTI. The definition lengths of the C-RNTIs are different, the value ranges of the C-RNTIs are different, namely the number of users which can be uniquely identified is different. Meanwhile, the length of the C-RNTI determines the number of C-RNTIs that can be included in the paging information. To be provided withThe lengths of the C-RNTI are 7 bits and 16 bits respectively for example, and when the C-RNTI is 7 bits, the value range is [0,127 ]]Jointly identifying the RNTI value of the UE with the C-RNTI and the sub-band number, e.g. according to the formula n_RNTI＝(subbandIndex+1)×2⁷+n_C-RNTICalculating the unique identification value of the cell of the UE, wherein subbrandIndex is the index value of the subband number of the UE, and n_C-RNTIIs the C-RNTI value of the UE. And when the C-RNTI is 16 bits, the value range is [0,65535 ]]The C-RNTI may be used directly to identify the UE within the cell. In addition, when the length of the C-RNTI is 7 bits, it is assumed that the paging information includes 4C-RNTIs and the length of the paging dedicated DCI format is 28 bits. When the length of the C-RNTI is 16 bits, the paging information is assumed to comprise 2C-RNTIs, and the length of the paging special DCI format is 32 bits.

The operation is specifically as follows:

firstly, the eNode B searches the C-RNTI corresponding to the UE and the subband number of the monitoring subband according to the IMSI of the UE in the paging message.

Then, according to the TAI list information of the UE, determining the UE to be paged in the cell in the TAI list, where the UE to be paged should satisfy the following conditions a and b:

a. the current state recorded by the UE to be paged on the eNode B side is an inactive state. The inactive state indicates that the UE supports DRX and the state of the UE is in a dormant state, i.e. does not monitor the PDCCH scrambled by the C-RNTI.

b. The UE requiring paging has not transmitted a Scheduling Request (SR) until the paging occasion comes.

It should be noted that, if the UE to be paged recorded by the eNode B is in an inactive state, but before the paging time arrives (i.e., the eNode B has not sent the paging information of the UE to be paged), the eNodeB receives the SR sent by the UE to be paged, the eNode B will not send the paging information of the UE, and update the state of the UE to an active state.

And finally, recording the UE to be paged on each subband according to the C-RNTI of the UE to be paged and the subband number of the monitoring subband.

In the frequency domain, considering the support of single subband users, the paging information of the pre-paging user is sent on the monitoring subband corresponding to the user, so as to ensure that the user with limited receiver can receive the paging information.

It should be noted that the monitored sub-band refers to a sub-band in which the UE monitors the PDCCH.

For the paging scenario, the monitoring subband is the camping subband of the UE, i.e. the UE indicates the subband in which the UE camps through a random access process or a subband switching signaling on the network side.

And secondly, determining the paging time for sending the paging information according to the preset paging cycle and the offset.

The method for determining the paging time by the base station is the same as the method for determining the paging time by the UE in the foregoing embodiment, and details are not repeated in this embodiment.

In the time domain, the paging information of all UEs is transmitted at the same starting time calculated at the same period, and the number of repetitions of the transmission is the same. Paging information the paging occasions are configured by applying the configuration information contained in the paging configuration cell. The base station repeatedly sends the paging information to the UE from the PF-start radio frame to the PF-start + PF-length-1 radio frame in the paging sending period, and the UE receives the paging information sent by the eNode B in one paging sending period at the corresponding paging moment.

It should be noted that, due to the single subband frame structure design of the 230MHz frequency band power grid system, downlink transmission uses the first 13 OFDM symbols of the radio frame, so that the UE does not need to know the subframe number of the paging time. Specifically, in the system, a radio frame is 25ms in length, and includes 5 subframes of 5ms, each subframe including 9 OFDM symbols. The uplink and downlink resources are planned according to the characteristics of the uplink and downlink services of the system. The downlink resource is 13 symbols, which are 9 symbols of the subframe 0 and the first 4 symbols of the subframe 1. The uplink resource is the last 4 symbols of subframe 1 and subframe 2, subframe 3, and subframe 4.

It can be understood that the 230MHz frequency band power grid system adopts a TDD duplex mode, the uplink and the downlink are the same working frequency, except for the planning of the uplink and the downlink resources, the 5 th symbol of the subframe 1 is a guard interval gp (guard period) for protecting the interference of the downlink signal to the uplink signal. In order to meet the requirements of industrial users, the frame structure mode and the data transmission mechanism are established, and the base station and the UE do not need to calculate the subframe when calculating the paging time, so that the calculation complexity can be reduced, and the realization and development are simplified.

3. And the base station sends downlink control information to the UE on each sub-band through a physical downlink control channel.

It should be noted that, before this step, the base station determines the paging time when the eNB transmits the paging information, that is, when and how many times the paging information is transmitted, according to the preset paging cycle, offset and transmission times.

In the time domain, the paging information of all UEs is transmitted at the same starting time calculated at the same period, and the number of repetitions of the transmission is the same.

4. The UE receives paging information.

For the UE, the UE needs to know the paging configuration cell first, then calculate the paging time for sending the paging information in each paging information sending cycle according to the paging configuration cell, and receive the paging information on the monitoring subband where the UE is located at this time.

It should be noted that, before this step, the base station broadcasts system information to the UEs in the cell, where the system information includes paging configuration information, and the paging configuration information includes radio resource configuration information, specifically, a paging cycle and an offset, which is common to all UEs, so as to determine when and how many times the paging information is sent.

The paging configuration information includes a paging cycle, a transmission number and an offset. The paging cycle of the paging information is a paging cycle parameter indicating to the UE network side to send the paging information. The offset is optional, and when the offset parameter is not carried in the paging message, the parameter value is configured according to a default value, for example, the default value is 0.

The base station carries the paging configuration information in the system information and broadcasts the paging configuration information to the UE of the cell on the broadcast subband. The UE receives paging configuration information in the system information on the broadcast subband to obtain indication information for paging transmission, i.e. knows the opportunity for paging information to be transmitted on the network side.

After receiving the system information, the UE determines the paging time of the paging information according to the configuration contained in the application system information. The UE calculates the initial paging time for starting to transmit the paging information and the time for retransmitting the paging information in each paging information transmission period by using the paging configuration information according to the same principle as the base station, and receives the paging information at the time.

The method for determining the paging time is as described above, and this embodiment is not described again.

The UE tries to receive paging information at each paging time in a paging cycle and analyzes the received paging information.

If the UE successfully resolves the paging message, the UE stops monitoring the subsequent paging time in the paging cycle (if there is a paging time in the subsequent time in the paging cycle), and checks whether there is a paging belonging to the UE in the paging message, i.e. whether the UE identifier in the paging message includes its identifier. If so, the UE monitors the PDCCH at the moment when the network side configures the PDCCH for the UE to receive downlink data of the UE, and if not, the UE continues to monitor paging information at the paging moment in the next paging cycle.

The method provided by the embodiment at least has the following technical effects:

the paging time of the paging information is determined by utilizing the paging cycle and the offset, the paging time of the paging information of different terminals is the same, a plurality of terminals can receive the paging information at the same paging time, the paging information is transmitted through the PDCCH, and the resource overhead can be further saved.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, and not to limit the same; although embodiments of the present invention have been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A paging configuration method, comprising:

at the paging time, the UE receives paging information sent by the eNB;

the paging information is scheduling authorization information of the paging information sent by the base station through the PDCCH at the paging time, and the paging information is sent through the PDSCH;

or,

transmitting the paging information directly through a PDCCH;

wherein, the UE determines the paging time according to the paging cycle and the offset acquired in advance, specifically,

or,

determining the paging time according to the initial paging time and the re-paging time, wherein the paging time comprises the initial paging time and the re-paging time;

the UE determines the paging time according to a pre-obtained paging cycle, offset, and number of sending times, and specifically includes:

the UE determines the paging time by using formulas (1) to (3) according to a paging cycle, an offset and the number of sending times which are acquired in advance:

(PF-start mod pagingCycle)＝offset-FrameNumber (1)

PF-length＝pagingNumRepetitions (2)

T＝[PF-start，PF-start+1，……，PF-start+PF-length-1] (3)

the method comprises the following steps that PF-start represents initial paging time, pagecycle represents a paging cycle for sending paging messages, offset-FrameNumber represents that the paging messages are sent on the radio frames in the sending cycle, the default value is 0, PF-length is the length of a paging window, pageNumRepetitions represent sending times, T represents all paging times in one paging cycle, PF-start +1 represents second paging time in one paging cycle, and PF-start + PF-length-1 represents PF-length-1 paging time in one paging cycle;

at the paging time, on a predetermined sub-band, the UE receives paging information sent by the eNB;

after the UE receives the paging information sent by the eNB at the paging time, the method further includes:

and the UE analyzes the paging information, and if the UE successfully analyzes the paging information, the UE stops monitoring the paging information sent by the eNB at all paging moments after the paging moment in the paging cycle.

2. The method of claim 1, wherein: the UE determines a paging time according to a paging cycle and an offset, which are obtained in advance, specifically,

3. The method of claim 1, wherein: the UE determines a paging time according to a paging cycle and an offset, which are obtained in advance, specifically,

or,

4. The method of claim 3, wherein: the UE receives paging configuration information sent by the eNB, specifically,

5. The method of claim 1, wherein: the UE determines a paging time according to a paging cycle and an offset, which are obtained in advance, specifically,

6. A paging configuration method, comprising:

at the paging time, the eNB sends paging information to the predetermined UE;

or,

transmitting the paging information directly through a PDCCH;

wherein, the eNB determines the paging time for sending the paging information according to the preset paging cycle and the offset, specifically,

the eNB determines the paging time for sending the paging information according to a preset paging cycle, offset and sending times, wherein the sending times are the times for sending the paging information in the paging cycle;

or,

the eNB obtains an initial paging moment for sending paging information in a paging cycle according to a preset paging cycle and an offset;

obtaining a paging again time for sending the paging message according to the preset sending times, wherein the paging again time for sending the paging message and the initial paging time for sending the paging message are positioned in the same paging cycle;

determining the paging time for sending the paging information according to the initial paging time for sending the paging information and the re-paging time for sending the paging information, wherein the paging time for sending the paging information comprises the initial paging time for sending the paging information and the re-paging time for sending the paging information;

the eNB determines a paging time for sending paging information according to a preset paging cycle, an offset and a sending frequency, and specifically includes:

the eNB determines the paging time for sending the paging information by using formulas (4) to (6) according to a preset paging cycle, an offset and the sending times:

(PF-start mod pagingCycle)＝offset-FrameNumber (4)

PF-length＝pagingNumRepetitions (5)

T＝[PF-start，PF-start+1，……，PF-start+PF-length-1] (6)

the method comprises the steps that PF-start represents the initial paging time for sending paging information, pagecycle represents the paging cycle for sending the paging information, offset-FrameNumber represents that the paging information is sent on the radio frame in the sending cycle, the default value is 0, PF-length is the length of a paging window, pageNumReptions represents the sending times, T represents all the paging time in one paging cycle, PF-start +1 represents the second paging time for sending the paging information in one paging cycle, and PF-start + PF-length-1 represents the PF-length-1 paging time for sending the paging information in one paging cycle;

the eNB sends paging information to the predetermined UE at the paging time, specifically,

and at the paging time, the eNB transmits paging information to the UE on a predetermined subband.

7. The method of claim 6, wherein: the method further comprises the step of enabling the user to select the target,

the eNB sends paging configuration information to the UE, wherein the paging configuration information comprises the paging cycle, so that the UE determines the paging time according to the paging cycle and an offset acquired from locally stored data;

or,

and the eNB sends paging configuration information to the UE, wherein the paging configuration information comprises the paging cycle and the offset, so that the UE determines the paging time according to the paging cycle and the offset.

8. The method of claim 7, wherein: the eNB sends paging configuration information, specifically,