WO2018210074A1

WO2018210074A1 - Method and base station for determining number of machine type communication downlink control channel repetitions

Info

Publication number: WO2018210074A1
Application number: PCT/CN2018/082343
Authority: WO
Inventors: 李艳华; 刘蓉
Original assignee: 电信科学技术研究院有限公司
Priority date: 2017-05-16
Filing date: 2018-04-09
Publication date: 2018-11-22
Also published as: CN108882204B; CN108882204A

Abstract

An embodiment of the present application relates to the field of wireless communications, and particularly relates to a method and a base station for determining a number of MPDCCH repetitions, so as to solve the problem in the prior art in which when a base station transmits a paging message using a number of MPDCCH repetitions transmitted by a core network, the number of MPDCCH repetitions used in transmitting the paging message may be too large, resulting in wastage of resources. According to the embodiment of the present application, a base station obtains an initial number of MPDCCH repetitions used by user equipment; and performs an optimization process on the initial number of MPDCCH repetitions, and uses the optimized number of MPDCCH repetitions as a number of MPDCCH repetitions corresponding to the user equipment, wherein the optimized number of MPDCCH repetitions is less than the initial number of MPDCCH repetitions. In this way, a base station uses an optimized small number of MPDCCH repetitions when transmitting a paging message, thereby saving system resources.

Description

Method for determining number of repetitions of downlink control channel of machine type communication and base station

This application claims the priority of the Chinese patent application filed on May 16, 2017, the Chinese Patent Office, the application number is 201710344661.X, and the application name is "a method and base station for determining the number of repetitions of the downlink control channel of the machine type communication". The entire contents of this application are incorporated herein by reference.

Technical field

The present application relates to the field of wireless communication technologies, and in particular, to a method and a base station for determining a number of repetitions of a MSCH of a machine type communication downlink control channel.

Background technique

In order to make IoT user equipment working in LTE (Long Term Evolution) network system have greater coverage and lower acquisition cost, 3GPP (3rd Generation Partnership Project) standard The organization proposed eMTC (enhanced Machine Type Communication) user equipment technology. Compared with other LTE user equipments, the eMTC user equipment uses downlink single antenna to transmit and receive, and has loss in diversity gain and uplink transmit power, and the coverage is relatively small. The eMTC user equipment at the edge of the cell of the LTE network is limited by the coverage, and it is difficult to ensure normal data transmission and reception through a single data transmission.

In order to ensure that the eMTC user equipment at the cell edge of the LTE network can normally send and receive data, the coverage of the eMTC user equipment can only be enhanced by multiple data retransmissions. To this end, it is stipulated in the 3GPP standard that each physical channel in the eMTC technology needs to repeatedly transmit data multiple times in consecutive multiple subframes, thereby improving the received signal to noise ratio of the data receiver.

The 3GPP standard specifies that the MPDCCH (MTC physical downlink control channel) used by the base station that the user equipment accesses when the user equipment enters the idle state or the user equipment accesses the network before the user equipment is released. The number of repetitions of the communication physical downlink control channel is reported to the core network as paging assistance information, and the core network saves the MPDCCH repetition number of the user equipment. When the user equipment needs to be paged, the number of MPDCCH repetitions of the user equipment that is saved by the core network is sent to the base station by using a paging request message, and after receiving the paging request message, the base station sends the paging message by using the MPDCCH repetition number. . Moreover, since the core network does not notify the base station of the aggregation level to be used when transmitting the paging message when transmitting the paging request message to the base station, the base station transmits the highest aggregation level when transmitting the paging message. If the aggregation level used by the user equipment is not the highest aggregation level when the user equipment uses the MPDCCH repetition number, the base station may use a smaller MPDCCH repetition number when using the highest level to send the paging message, if the MPDCCH repetition of the core network notification is continued to be used. The number of times, there will be a problem that the number of MPDCCH repetitions used when sending a paging message is too large, and system resources are wasted.

In summary, in the prior art, when the base station sends a paging message using the MPDCCH repetition number sent by the core network, the number of MPDCCH repetitions used when the paging message is sent is too large, and the system resources are wasted.

Summary of the invention

The present application provides a method for determining the number of repetitions of an MPDCCH, and a base station, which is used to solve the problem of the MPDCCH used when the paging message is sent when the base station uses the MPDCCH repetition number sent by the base network to send a paging message. The number of times is too large, wasting system resources.

Based on the foregoing problem, in the first aspect, the embodiment of the present application provides a method for determining the number of repetitions of an MPDCCH, including:

The base station acquires the initial number of MPDCCH repetitions used by the user equipment, where the initial number of MPDCCH repetitions is the number of MPDCCH repetitions used when the user equipment accesses the network most recently, or the last time before the user equipment enters the idle state from the connected state. The number of MPDCCH repetitions used;

The base station performs an optimization process on the number of repetitions of the initial MPDCCH, and uses the optimized number of MPDCCH repetitions as the number of MPDCCH repetitions corresponding to the user equipment; wherein the optimized MPDCCH repetition number is smaller than the initial MPDCCH repetition number.

Optionally, if the base station is a base station that is accessed before the user equipment enters an idle state from a connected state, the base station optimizes the initial MPDCCH repetition number, and uses the optimized MPDCCH repetition number as a location. After the number of MPDCCH repetitions corresponding to the user equipment, the method further includes:

Sending, by the base station, the MPDCCH repetition number corresponding to the user equipment to the core network, so that the core network notifies the base station to use the MPDCCH repetition number corresponding to the user equipment to send the opposite to the user equipment when paging the user equipment A paging message of the user equipment.

Optionally, if the base station is a base station that needs to page the user equipment, before the base station acquires an initial number of MPDCCH repetitions used by the user equipment, the method further includes:

Receiving, by the base station, a paging message that is sent by the core network and includes the number of repetitions of the initial MPDCCH;

After the base station optimizes the initial MPDCCH repetition times, and the optimized MPDCCH repetition number is used as the MPDCCH repetition number corresponding to the user equipment, the method further includes:

The base station sends a paging message to the user equipment by using the MPDCCH repetition number.

Optionally, the base station performs an optimization process on the initial MPDCCH repetition times, including:

The base station performs an optimization process on the number of repetitions of the initial MPDCCH according to the reduced parameter.

Optionally, the reduction parameter is a ratio of an initial aggregation level corresponding to the highest aggregation level of the initial MPDCCH repetition times, or the reduction parameter is a preset value.

Optionally, the base station performs optimization processing on the initial MPDCCH repetition times according to the reduction parameter, including:

And the base station uses, as the optimized MPDCCH repetition quantity, a product of the reduced parameter and the initial MPDCCH repetition number; or

Determining, by the base station, a set of MPDCCH repetition times corresponding to a maximum number of repetitions configured by the user equipment according to a first binding relationship between a maximum number of repetitions and a set of the number of repetitions of the MPDCCH; determining, by the set of the MPDCCH repetition times, not less than The product of the reduction parameter and the number of repetitions of the initial MPDCCH, and the MPDCCH repetition number having the smallest difference from the product, is used as the optimized MPDCCH repetition number.

The base station performs optimization processing on the initial MPDCCH repetition times according to the second binding relationship between the aggregation level, the MPDCCH repetition number, and the SINR.

Optionally, the base station optimizes the initial MPDCCH repetition times according to the second binding relationship between the aggregation level, the MPDCCH repetition number, and the SINR, including:

Determining, by the base station, the first SINR corresponding to the initial aggregation level used by the user equipment and the initial MPDCCH repetition number according to the second binding relationship;

Determining, by the base station, the at least one target SINR that is within a preset range from the SINR corresponding to the highest aggregation level;

The base station determines the optimized number of MPDCCH repetitions according to the at least one target SINR.

Optionally, the determining, by the base station, the optimized number of MPDCCH repetitions according to the at least one target SINR, including:

The base station selects, from the number of MPDCCH repetitions corresponding to the at least one target SINR, an MPDCCH repetition number that is smaller than the initial MPDCCH repetition number, as the optimized MPDCCH repetition number; or

And the base station selects, according to the MPDCCH repetition number corresponding to the at least one target SINR, an MPDCCH repetition number that is smaller than the initial MPDCCH repetition number; and determines, according to the first binding relationship between the maximum repetition quantity and the MPDCCH repetition quantity set, Determining, by the MPDCCH repetition number set, a number of MPDCCH repetition times corresponding to the maximum number of repetitions of the MPDCCH, and determining that the MPDCCH repetition number is not smaller than the selected MPDCCH repetition number, and the difference between the selected MPDCCH repetition times and the selected MPDCCH repetition number is the smallest The number of MPDCCH repetitions is used as the number of times of the optimized MPDCCH repetition.

In a second aspect, the embodiment of the present application further provides a base station that determines the number of repetitions of an MPDCCH, including:

An acquiring module, configured to acquire an initial number of MPDCCH repetitions used by the user equipment, where the initial MPDCCH repetition number is the number of MPDCCH repetitions used when the user equipment accesses the network most recently, or the user equipment enters the idle state from the connected state. The number of MPDCCH repetitions last used before the state;

a processing module, configured to perform an optimization process on the initial MPDCCH repetition number, and use the optimized MPDCCH repetition number as the MPDCCH repetition number corresponding to the user equipment; where the optimized MPDCCH repetition number is smaller than the initial MPDCCH repetition frequency.

Optionally, if the base station is a base station that is accessed before the user equipment enters an idle state from a connected state, the processing module is further configured to:

After the number of the MPDCCH repetitions is optimized, and the number of the MPDCCH repetitions is used as the MPDCCH repetition number corresponding to the user equipment, the MPDCCH repetition number corresponding to the user equipment is sent to the core network, so that the When the user equipment is paging, the core network notifies the base station to send a paging message to the user equipment by using the MPDCCH repetition number corresponding to the user equipment.

Optionally, if the base station is a base station that needs to page the user equipment, the acquiring module is further configured to:

Receiving, by the core network, a paging message that includes the number of repetitions of the initial MPDCCH, before acquiring an initial number of MPDCCH repetitions used by the user equipment;

The processing module is further configured to:

After the initial MPDCCH repetition number is optimized, and the optimized MPDCCH repetition number is used as the MPDCCH repetition number corresponding to the user equipment, the paging message to the user equipment is sent by using the MPDCCH repetition number.

Optionally, the processing module is specifically configured to:

The initial MPDCCH repetition times are optimized according to the reduced parameters.

Optionally, the processing module is specifically configured to:

And multiplying the reduced parameter by the number of repetitions of the initial MPDCCH as the optimized number of MPDCCH repetitions; or

Determining, according to a first binding relationship between the maximum number of repetitions and the MPDCCH repetition number set, a set of MPDCCH repetition times corresponding to a maximum number of repetitions configured by the user equipment; determining, from the set of MPDCCH repetition times, not less than the reduction parameter The number of repetitions of the MPDCCH that is the product of the number of repetitions of the initial MPDCCH and the smallest difference from the product, as the number of repetitions of the optimized MPDCCH.

Optionally, the processing module is specifically configured to:

The initial MPDCCH repetition number is optimized according to the second binding relationship between the aggregation level, the MPDCCH repetition number, and the SINR.

Optionally, the processing module is specifically configured to:

Determining, according to the second binding relationship, a first SINR corresponding to an initial aggregation level used by the user equipment and an initial MPDCCH repetition number; and determining, by using an SINR corresponding to the highest aggregation level, a difference from the first SINR. At least one target SINR within a preset range; determining an optimized number of MPDCCH repetitions according to the at least one target SINR.

Optionally, the processing module is specifically configured to:

And selecting, from the number of MPDCCH repetitions corresponding to the at least one target SINR, an MPDCCH repetition number that is smaller than the initial MPDCCH repetition number, as the optimized MPDCCH repetition number; or

And selecting, according to the MPDCCH repetition number corresponding to the at least one target SINR, an MPDCCH repetition number that is smaller than the initial MPDCCH repetition number; determining, according to the first binding relationship between the maximum repetition quantity and the MPDCCH repetition quantity set, the user equipment And a set of MPDCCH repetition times corresponding to the maximum number of repetitions, and determining, from the MPDCCH repetition number set, an MPDCCH repetition number that is not less than the selected MPDCCH repetition number and the smallest difference from the selected MPDCCH repetition times As the optimized number of MPDCCH repetitions.

In a third aspect, the embodiment of the present application further provides a base station that determines a number of repetitions of a MSCH of a downlink communication channel of a machine type communication, including:

A processor for transmitting and receiving data through the transceiver and reading the program in the memory, performing the following process:

Obtaining an initial MPDCCH repetition number used by the user equipment, where the initial MPDCCH repetition number is the MPDCCH repetition number used when the user equipment accesses the network most recently, or the user equipment last used before entering the idle state from the connected state. And the number of MPDCCH repetitions is optimized, and the number of the MPDCCH repetitions is used as the MPDCCH repetition number corresponding to the user equipment; wherein the optimized MPDCCH repetition number is smaller than the initial MPDCCH repetition frequency.

Optionally, if the base station is a base station that is accessed before the user equipment enters an idle state from a connected state, the processor is further configured to:

Optionally, if the base station is a base station that needs to page the user equipment, the processor is further configured to:

Optionally, the processor is specifically configured to:

In a fourth aspect, the embodiment of the present application further provides a cache synchronization abnormal device readable storage medium, including program code, when the program code is run on a computing device, the program code is configured to enable the computing device to execute the foregoing The steps of any of the methods of the first aspect.

After obtaining the initial MPDCCH repetition number used by the user equipment, the initial MPDCCH repetition number is optimized, and the optimized MPDCCH repetition number is smaller than the initial MPDCCH repetition number. After receiving the paging message of the core network, the base station sends the paging message to the user equipment by using the optimized MPDCCH repetition number and the highest aggregation level. Because the base station sends the paging message, the optimized MPDCCH is used. The number of repetitions, thereby saving system resources.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following drawings will be briefly described in the description of the embodiments. It is obvious that the drawings in the following description are only some embodiments of the present application, Those skilled in the art can also obtain other drawings based on these drawings without paying for inventive labor.

FIG. 1 is a flowchart of a method for determining an MPDCCH repetition number according to an embodiment of the present application;

2 is a flowchart of a method for optimizing an initial MPDCCH repetition number according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a base station for determining an MPDCCH repetition number according to an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a base station for determining the number of repetitions of an MPDCCH according to an embodiment of the present application.

detailed description

The base station of the embodiment of the present application acquires the initial number of MPDCCH repetitions used by the user equipment, where the initial MPDCCH repetition number is the number of MPDCCH repetitions used when the user equipment accesses the network most recently, or the user equipment enters from the connected state. The MPDCCH repetition number of the last used before the idle state; the base station optimizes the initial MPDCCH repetition times, and uses the optimized MPDCCH repetition number as the MPDCCH repetition number corresponding to the user equipment; wherein the optimized The number of MPDCCH repetitions is less than the number of initial MPDCCH repetitions.

The present application will be further described in detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present application, but not all embodiments. . All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

As shown in FIG. 1 , the method for determining the number of repetitions of an MPDCCH in the embodiment of the present application includes:

Step 101: The base station acquires an initial MPDCCH repetition number used by the user equipment.

Step 102: The base station performs an optimization process on the initial MPDCCH repetition times, and uses the optimized MPDCCH repetition number as the MPDCCH repetition number corresponding to the user equipment, where the optimized MPDCCH repetition number is smaller than the initial MPDCCH. repeat times.

The number of MPDCCH repetitions used by the user equipment when the user equipment accesses the network last time, or the number of MPDCCH repetitions used by the user equipment before entering the idle state from the connected state.

It should be noted that the manner of determining the number of initial MPDCCH repetitions used by the user equipment is only the manner of determining the number of initial MPDCCH repetitions used by the user equipment in the embodiment of the present application. The number of repetitions of any MPDCCH used before the connection state enters the idle state is used as the initial MPDCCH repetition number used by the user equipment.

After the user equipment in the embodiment of the present application enters the idle state from the connected state, the base station that the user equipment accesses needs to report the number of MPDCCH repetitions of the user equipment to the core network, and the core network saves the MPDCCH repetition times used by the user equipment, so that When the user equipment is next paged, the core network sends the MPDCCH repetition number corresponding to the user equipment to the base station that needs to page the user equipment, so that the base station that needs to page the user equipment uses the core network to notify. The number of MPDCCH repetitions is paged.

It should be noted that, when determining the number of repetitions of the MPDCCH in the embodiment of the present application, in one case, the base station that is accessed by the user equipment before entering the idle state from the connected state determines the MPDCCH repetition number, and sends the determined MPDCCH repetition number to the core network. The other case is that the number of MPDCCH repetitions is determined by the base station that needs to page the user equipment, and the number of MPDCCH repetitions received by the base station that needs to be paged by the user equipment from the core network is the initial number of MPDCCH repetitions used by the user equipment.

The following two cases are separately described.

Case 1: The base station that determines the number of repetitions of the MPDCCH is the base station that the user equipment accesses before entering the idle state from the connected state.

Optionally, after the step 102, the base station sends the MPDCCH repetition number corresponding to the user equipment to the core network, so that the core network notifies the base station to use the user when paging the user equipment. The number of MPDCCH repetitions corresponding to the device sends a paging message to the user equipment.

In the embodiment of the present application, when the base station that determines the number of MPDCCH repetitions is the base station that the user equipment accesses before entering the idle state from the connected state, the following methods may be used to optimize the initial MPDCCH repetition times used by the user equipment.

Manner 1: The base station performs an optimization process on the number of repetitions of the initial MPDCCH according to the reduced parameter, where the reduction parameter is a ratio of an initial aggregation level corresponding to the highest aggregation level corresponding to the number of repetitions of the initial MPDCCH.

It should be noted that, in this case, since the base station that determines the number of repetitions of the MPDCCH is the base station that the user equipment accesses before entering the idle state from the connected state, the base station can directly obtain the initial MPDCCH repetition number used by the user equipment. And an initial aggregation level used by the user equipment.

The initial aggregation level used by the user equipment is an aggregation level corresponding to the number of repetitions of the initial MPDCCH, that is, an aggregation level used when the user equipment uses the initial MPDCCH repetition number. For example, if the initial aggregation level used by the user equipment is the number of MPDCCH repetitions used by the user equipment when accessing the network, the initial aggregation level corresponding to the initial number of MPDCCH repetitions is the aggregation level used when the user equipment accesses the network most recently. . For example, if the initial aggregation level used by the user equipment is the number of MPDCCH repetitions that are used last time before the user equipment enters the idle state from the connected state, the initial aggregation level corresponding to the initial number of MPDCCH repetitions is that the user equipment enters the idle state from the connected state. The aggregation level used last time.

For the MPDCCH formats specified in the protocol, Table 1 shows:

Table 1

As can be seen from Table 1 above, the highest aggregation level specified in the agreement is 24.

The manner in which the base station optimizes the initial MPDCCH repetition times according to the reduction parameter in the embodiment of the present application includes but is not limited to the following two types:

Mode 1, the base station, the product of the reduced parameter and the number of repetitions of the initial MPDCCH, as the optimized MPDCCH repetition number;

In the mode 2, the base station determines, according to the first binding relationship between the maximum number of repetitions and the MPDCCH repetition number set, the MPDCCH repetition number set corresponding to the maximum number of repetitions configured by the user equipment, and determines the MPDCCH repetition frequency set from the MPDCCH repetition frequency set. Not less than a product of the reduced parameter and the number of repetitions of the initial MPDCCH, and the number of MPDCCH repetitions having the smallest difference from the product, as the optimized number of MPDCCH repetitions.

The following describes the mode 1 and the mode 2 separately.

For the above method 1:

When the reduction parameter is the ratio of the initial aggregation level to the highest aggregation level, when the initial MPDCCH repetition number is optimized, the product of the ratio of the initial aggregation level to the highest aggregation level and the initial MPDCCH repetition number is used as the optimized MPDCCH. repeat times.

For example, the initial MPDCCH repetition number M=64 used by the user equipment acquired by the base station, and the initial aggregation level L=2. And the maximum aggregation level specified by the agreement is 24, then the reduction parameter is 2/64. Then, when the initial MPDCCH repetition number M=64 is optimized, the obtained optimized MPDCCH repetition number M′=floor(M*(L/24))=floor(64*(2/24))=5; Where floor represents a rounding down operation.

For the above method 2:

The first binding relationship between the maximum number of repetitions specified by the protocol and the MPDCCH repetition number set is as shown in Table 2.

Table 2

First, the base station determines, according to the first binding relationship between the maximum number of repetitions and the MPDCCH repetition number set, the MPDCCH repetition number set corresponding to the maximum repetition number r _max configured for the user equipment;

Where r _max is determined by the high-level parameter MPDCCH-NumRepetition-Paging.

For example, if the maximum number of repetitions r _max configured for the user equipment is 128, the set of MPDCCH repetition times corresponding to 128 is {2, 16, 64, 128}.

Then, the base station calculates a product of the reduction parameter and the number of repetitions of the initial MPDCCH;

Since the reduction parameter is the ratio of the initial aggregation level to the highest aggregation level, the product of the reduction parameter and the number of initial MPDCCH repetitions is the product of the ratio of the initial aggregation level to the highest aggregation level and the number of initial MPDCCH repetitions.

For example, the initial MPDCCH repetition number M=64 used by the user equipment acquired by the base station, and the initial aggregation level L=2. And the maximum aggregation level specified by the agreement is 24, then the reduction parameter is 2/64. Then the product of the reduction parameter and the number of initial MPDCCH repetitions is: floor(M*(L/24))=floor(64*(2/24))=5.

And determining, by the MPDCCH repetition number set, a product that is not smaller than the product of the reduction parameter and the initial MPDCCH repetition number, and the MPDCCH repetition number that is the smallest difference from the product, as the optimized MPDCCH repetition number;

That is, from the MPDCCH repetition number set {2, 16, 64, 128}, the MPDCCH repetition number 16 is not less than 5, and the difference from 5 is the smallest, and the optimized MPDCCH repetition number is 16.

Manner 2: The base station performs an optimization process on the number of repetitions of the initial MPDCCH according to the reduced parameter, where the reduction parameter is a preset value.

Optionally, the preset value is a fixed value configured by an OAM (Operations and Maintenance) entity.

It should be noted that, in this case, since the base station that determines the number of repetitions of the MPDCCH is the base station that the user equipment accesses before entering the idle state from the connected state, the base station can directly acquire the initial MPDCCH repetition number used by the user equipment.

As can be seen from Table 1 above, the highest aggregation level specified by the agreement is 24.

The following describes the mode 1 and the mode 2 separately.

For the above method 1:

When the reduction parameter is a preset value, when the initial MPDCCH repetition number is optimized, the product of the preset value and the initial MPDCCH repetition number is used as the optimized MPDCCH repetition number.

For example, the initial MPDCCH repetition number used by the user equipment acquired by the base station is M=64, and the preset reduction parameter is 1/4. Then, when the initial MPDCCH repetition number M=64 is optimized, the obtained MPDCCH repetition number M′=floor(M*(1/4))=floor(64*(1/4))=16; Where floor represents a rounding down operation.

For the above method 2:

First, the base station according to a first binding relationship with the maximum number of repetitions MPDCCH set the number of repetitions, is determined as a maximum number of repetitions r MPDCCH configuration of the user equipment corresponding to the set number of repetitions _max;

For example, the maximum number of repetitions for the configuration of the user equipment r _max is 128, the number of repetitions corresponding to 128 MPDCCH is {2,16,64,128}.

The reduced product is the product of the preset MCU.

For example, the initial MPDCCH repetition number used by the user equipment acquired by the base station is M=64, and the preset reduction parameter is 1/4. Then, the product of the preset value and the number of repetitions of the initial MPDCCH is: M'=floor(M*(1/4))=floor(64*(1/4))=16.

And determining, by the MPDCCH repetition number set, a product that is not less than a product of the preset value and the initial MPDCCH repetition number, and the MPDCCH repetition number that is the smallest difference from the product, as the optimized MPDCCH repetition number;

That is, from the MPDCCH repetition number set {2, 16, 64, 128}, the MPDCCH repetition number 16 is not less than 16 and the difference from 16 is the smallest, and the optimized MPDCCH repetition number is 16.

In a third manner, the base station optimizes the initial MPDCCH repetition number according to a second binding relationship between an aggregation level and an MPDCCH repetition number and a SINR (Signal to Interference plus Noise Ratio).

The second binding relationship between the aggregation level, the number of MPDCCH repetitions, and the SINR is as shown in Table 3:

聚合等级/MPDCCH重复次数Aggregation level/MPDCCH repetitions	SINRSINR
24/25624/256	SINR ₁ SINR ₁
24/12824/128	SINR ₂ SINR ₂
24/6424/64	SINR ₃ SINR ₃
24/3224/32	SINR ₄ SINR ₄
24/1624/16	SINR ₅ SINR ₅
24/824/8	SINR ₆ SINR ₆
24/424/4	SINR ₇ SINR ₇

24/224/2	SINR ₈ SINR ₈
24/124/1	SINR ₉ SINR ₉
16/25616/256	SINR ₁₀ SINR ₁₀
16/12816/128	SINR ₁₁ SINR ₁₁
16/6416/64	SINR ₁₂ SINR ₁₂
16/3216/32	SINR ₁₃ SINR ₁₃
16/1616/16	SINR ₁₄ SINR ₁₄
16/816/8	SINR ₁₅ SINR ₁₅
16/416/4	SINR ₁₆ SINR ₁₆
16/216/2	SINR ₁₇ SINR ₁₇
16/116/1	SINR ₁₈ SINR ₁₈
8/2568/256	SINR ₁₉ SINR ₁₉
8/1288/128	SINR ₂₀ SINR ₂₀
8/648/64	SINR ₂₁ SINR ₂₁
8/328/32	SINR ₂₂ SINR ₂₂
8/168/16	SINR ₂₃ SINR ₂₃
8/88/8	SINR ₂₄ SINR ₂₄
8/48/4	SINR ₂₅ SINR ₂₅
8/28/2	SINR ₂₆ SINR ₂₆
8/18/1	SINR ₂₇ SINR ₂₇
4/2564/256	SINR ₂₈ SINR ₂₈
4/1284/128	SINR ₂₉ SINR ₂₉
4/644/64	SINR ₃₀ SINR ₃₀
4/324/32	SINR ₃₁ SINR ₃₁
4/164/16	SINR ₃₂ SINR ₃₂
4/84/8	SINR ₃₃ SINR ₃₃
4/44/4	SINR ₃₄ SINR ₃₄
4/24/2	SINR ₃₅ SINR ₃₅
4/14/1	SINR ₃₆ SINR ₃₆
2/2562/256	SINR ₃₇ SINR ₃₇
2/1282/128	SINR ₃₈ SINR ₃₈
2/642/64	SINR ₃₉ SINR ₃₉
2/322/32	SINR ₄₀ SINR ₄₀
2/162/16	SINR ₄₁ SINR ₄₁
2/82/8	SINR ₄₂ SINR ₄₂
2/42/4	SINR ₄₃ SINR ₄₃
2/22/2	SINR ₄₄ SINR ₄₄
2/12/1	SINR ₄₅ SINR ₄₅
1/11/1	SINR ₄₆ SINR ₄₆

table 3

It should be noted that the SINR in the embodiment of the present application refers to a minimum SINR value required to reach a specified BLER (Block Error Ratio).

The distributed binding and the centralized transmission correspond to different aggregation levels, the second binding relationship between the MPDCCH repetition times and the SINR. Table 3 shows the second binding relationship between the aggregation level of the distributed transmission, the number of MPDCCH repetitions, and the SINR.

It should be noted that the second binding relationship between the aggregation level, the MPDCCH repetition number and the SINR corresponding to the distributed transmission and the centralized transmission is obtained through link simulation.

Specifically, as shown in FIG. 2, the embodiment of the present application optimizes the initial MPDCCH repetition times according to the second binding relationship between the aggregation level, the MPDCCH repetition number, and the SINR in the following manner:

Step 201: The base station determines, according to the second binding relationship, a first SINR corresponding to an initial aggregation level used by the user equipment and an initial MPDCCH repetition number.

Step 202: The base station determines, from the SINR corresponding to the highest aggregation level, at least one target SINR that is within a preset range from the first SINR;

Step 203: The base station determines, according to the at least one target SINR, an optimized number of MPDCCH repetitions.

In step 201, according to the initial aggregation level used by the user equipment and the initial MPDCCH repetition number, and according to the second binding relationship, the first SINR corresponding to the initial aggregation level and the initial MPDCCH repetition number is determined.

It should be noted that, when acquiring the initial aggregation level and the initial MPDCCH repetition number used by the user equipment, the base station needs to determine the transmission mode adopted by the MPDCCH corresponding to the initial aggregation level and the initial MPDCCH repetition number. If the transmission mode of the MPDCCH corresponding to the initial aggregation level and the number of the initial MPDCCH repetitions is a distributed transmission, the initial binding is determined according to the second binding relationship between the aggregation level, the MPDCCH repetition number, and the SINR. The first SINR corresponding to the aggregation level and the number of initial MPDCCH repetitions; if the transmission mode adopted by the MPDCCH corresponding to the initial aggregation level and the initial MPDCCH repetition number is centralized transmission, the aggregation level corresponding to the centralized transmission, the MPDCCH repetition number, and the SINR three The second binding relationship between the two determines a first SINR corresponding to the initial aggregation level and the number of initial MPDCCH repetitions.

For example, the second binding relationship between the aggregation level corresponding to the distributed transmission, the number of MPDCCH repetitions, and the SINR is as shown in Table 3. The base station obtains an initial aggregation level of 2 for the user equipment, and the initial MPDCCH repetition number is 64. The initial aggregation level is determined according to the second binding relationship between the aggregation level, the MPDCCH repetition number, and the SINR. 2 and the first SINR corresponding to the initial MPDCCH repetition number of 64 is SINR ₃₉ .

In step 202, after determining the first SINR, the base station determines, from the SINR corresponding to the highest aggregation level, at least one target SINR that is within a preset range from the first SINR.

The preset range is configured by the OAM entity.

For example, if the highest aggregation level specified by the protocol is 24, the base station selects, from all SINRs corresponding to the aggregation level 24, all target SINRs whose difference from the first SINR is within a preset range.

It should be noted that, in step 2, if the transmission mode adopted by the MPDCCH corresponding to the initial aggregation level and the initial MPDCCH repetition number is centralized transmission, the initial aggregation level corresponding to the centralized transmission and the initial MPDCCH repetition number and the SINR are After the first SINR is determined, the transmission mode of the MPDCCH used by the paging message is a distributed transmission, and the second aggregation of the initial aggregation level and the initial MPDCCH repetition number and the SINR according to the distributed transmission is required. Relationship, determine the target SINR.

For the step 203, the base station in the embodiment of the present application may determine the number of optimized MPDCCH repetitions by using, but not limited to, the following manners.

Manner 1: The base station selects an MPDCCH repetition number less than the initial MPDCCH repetition number from the MPDCCH repetition times corresponding to the at least one target SINR, as the optimized MPDCCH repetition number.

Manner 2: The base station selects an MPDCCH repetition number less than the initial MPDCCH repetition number from the MPDCCH repetition times corresponding to the at least one target SINR; and according to the first binding relationship between the maximum repetition number and the MPDCCH repetition frequency set, Determining a set of MPDCCH repetition times corresponding to the maximum number of repetitions configured for the user equipment, and determining, from the set of MPDCCH repetition times, not less than the selected number of MPDCCH repetitions, and the difference from the selected MPDCCH repetition times The minimum number of MPDCCH repetitions is used as the number of optimized MPDCCH repetitions.

The following describes the mode 1 and the mode 2 separately.

For mode 1:

If the base station determines, from the SINR corresponding to the highest aggregation level, a target SINR that is within a preset range from the first SINR, and the MPDCCH repetition number corresponding to the target SINR is less than the initial MPDCCH repetition number, the target is SINR as the number of MPDCCH repetitions after optimization;

If the base station determines, from the SINR corresponding to the highest aggregation level, that the target SINR is different from the first SINR, the base station randomly selects one MPDCCH repetition from the MPDCCH repetition times corresponding to the multiple target SINRs. The number of times as the number of MPDCCH repetitions after optimization.

Optionally, if the base station determines, from the SINR corresponding to the highest aggregation level, a plurality of target SINRs that are within a preset range of the difference between the first SINR, the base station selects the first SINR from the multiple target SINRs. The target SINR with the smallest difference is the number of MPDCCH repetitions corresponding to the target SINR as the optimized number of MPDCCH repetitions.

For example, the second binding relationship between the aggregation level corresponding to the distributed transmission, the number of MPDCCH repetitions, and the SINR is as shown in Table 3. The base station obtains an initial aggregation level of 2 for the user equipment, and the initial MPDCCH repetition number is 64, and determines the initial aggregation level 2 according to the second binding relationship between the aggregation level corresponding to the distributed transmission, the MPDCCH repetition number, and the SINR. The first SINR corresponding to the initial MPDCCH repetition number 64 is SINR ₃₉ .

The target SINR whose difference from the SINR ₃₉ is within a preset range is selected from all the SINRs corresponding to the highest aggregation level 24, and it is assumed that all the SINRs corresponding to the highest aggregation level 24 are selected within a preset range from the SINR ₃₉ . The SINR is SINR ₅ , SINR ₆ , SINR ₇ , and SINR ₈ .

Then, an SINR is randomly selected from the SINR ₅ , the SINR ₆ , the SINR ₇ , and the SINR ₈ , and the MPDCCH repetition number corresponding to the selected SINR is used as the optimized MPDCCH repetition number; or, from SINR ₅ , SINR ₆ , SINR ₇ , and SINR ₈ The SINR with the smallest difference from the SINR ₃₉ is selected, and if it is SINR ₆ , the MPDCCH repetition number 8 corresponding to the SINR ₆ is taken as the optimized MPDCCH repetition number.

For mode 2:

First, the base station selects, from the MPDCCH repetition times corresponding to the at least one target SINR, an MPDCCH repetition number that is smaller than the initial MPDCCH repetition number.

The manner in which the base station selects an MPDCCH repetition number that is smaller than the number of repetitions of the initial MPDCCH is the same as the manner in which the number of repetitions of the MPDCCH that is smaller than the number of repetitions of the initial MPDCCH is selected in the mode 1, and details are not described herein again.

Then, the base station determines, according to the first binding relationship between the maximum number of repetitions and the MPDCCH repetition number set, the MPDCCH repetition number set corresponding to the maximum repetition number configured by the user equipment;

Finally, the MPDCCH repetition number that is not less than the selected MPDCCH repetition number and the smallest difference from the selected MPDCCH repetition number is determined as the optimized MPDCCH repetition number.

Assuming that the number of MPDCCH repetitions is 8 and the number of MPDCCH repetitions is {2, 16, 64, 128}, the number of repetitions of the MPDCCH {2, 16, 64, 128} is not less than 8, and is 8 The minimum number of MPDCCH repetitions is 16, and the number of optimized MPDCCH repetitions is 16.

Case 2: The base station that determines the number of repetitions of the MPDCCH is a base station that needs to page the user equipment.

Optionally, before step 101, the base station receives a paging message that is sent by the core network and includes the initial number of MPDCCH repetitions.

The number of the initial MPDCCH repetitions sent by the core network received by the base station is the base station that the user equipment accesses the last time to notify the core network.

After step 102, the base station sends a paging message to the user equipment by using the MPDCCH repetition number.

It should be noted that, in this case, the base station that determines the number of repetitions of the MPDCCH is a base station that needs to page the user equipment, and the base station may be the same as or different from the base station that the user equipment accesses the last time.

The following describes the manner in which the base station determines the reduced parameters for the base station that needs to page the user equipment with the base station that the user equipment accesses last time:

1. If the base station that needs to page the user equipment is the same as the base station that the user equipment accesses the last time.

When the base station that needs to page the user equipment is the same as the base station that the user equipment accesses the last time, the base station acquires the reduced parameter corresponding to the user equipment that is saved by the user equipment;

The initial parameter of the initial MGW is the ratio of the initial aggregation level to the highest aggregation level. When the user equipment enters the idle state from the connected state, the base station accessed by the user equipment obtains the initial MPDCCH repetition number and initial used by the user equipment. Aggregation level, and the ratio of the initial aggregation level to the highest aggregation level is saved as a reduction parameter.

Alternatively, when the base station that needs to page the user equipment is the same as the base station that the user equipment accesses the last time, the base station obtains the initial aggregation level corresponding to the user equipment saved by the user equipment, and uses the ratio of the initial aggregation level and the highest aggregation level as Reduce the parameters;

When the user equipment enters the idle state from the connected state, the base station that the user equipment accesses last time acquires the initial aggregation level used by the user equipment, and saves the initial aggregation level.

2. If the base station that needs to page the user equipment is different from the base station that the user equipment accesses the last time.

When the user equipment needs to be paged, the core network sends the reduced parameter corresponding to the user equipment to the base station that needs to page the user equipment;

That is, in the mode, the core network stores the reduced parameters corresponding to the user equipment; and the reduced parameters corresponding to the user equipment saved by the core network are determined by the base station that the user equipment accesses last time and notified to the core network;

The initial parameter of the initial MGW is the ratio of the initial aggregation level to the highest aggregation level. When the user equipment enters the idle state from the connected state, the base station accessed by the user equipment obtains the initial MPDCCH repetition number and initial used by the user equipment. Aggregation level, and the ratio of the initial aggregation level to the highest aggregation level is sent to the core network as a reduction parameter.

Or, when the user equipment needs to be paged, the core network sends the initial aggregation level corresponding to the user equipment to the base station that needs to page the user equipment;

That is, in the mode, the core network stores the initial aggregation level corresponding to the user equipment; and the initial aggregation level corresponding to the user equipment saved by the core network is determined by the base station that the user equipment accesses last time and notified to the core network;

When the user equipment enters the idle state from the connected state, the base station that the user equipment accesses last time acquires the initial aggregation level used by the user equipment, and sends the initial aggregation level to the core network.

After receiving the aggregation level corresponding to the user equipment sent by the core network, the base station that needs to page the user equipment uses the ratio of the initial aggregation level to the highest aggregation level as the reduction parameter.

The following describes specifically the manner in which the initial MPDCCH repetition times are optimized in the case of the second embodiment of the present application, including but not limited to the following two types:

The following describes the mode 1 and the mode 2 separately.

For the above method 1:

For example, the initial MPDCCH repetition number used by the user equipment acquired by the base station is M=32, and the initial aggregation level is L=4. And the maximum aggregation level specified by the agreement is 24, then the reduction parameter is 4/24. Then, when the initial MPDCCH repetition number M=32 is optimized, the obtained MPDCCH repetition number M′=floor(M*(L/24))=floor(32*(4/24))=5; Where floor represents a rounding down operation.

For the above method 2:

Finally, a product that is not less than a product of the reduction parameter and the number of repetitions of the initial MPDCCH, and a minimum number of MPDCCH repetitions that are the smallest difference from the product is determined from the MPDCCH repetition number set as the optimized MPDCCH repetition number.

The initial MPDCCH repetition number M=32 used by the user equipment acquired by the base station, and the initial aggregation level L=4. And the maximum aggregation level specified by the agreement is 24, then the reduction parameter is 4/24. Then, when the initial MPDCCH repetition number M=32 is optimized, the obtained MPDCCH repetition number M′=floor(M*(L/24))=floor(32*(4/24))=5.

It should be noted that, in this case, the base station that determines the number of repetitions of the MPDCCH is the base station that needs to page the user equipment, and the base station obtains the initial MPDCCH repetition number used by the user equipment from the paging message sent by the core network.

Moreover, since the reduced parameter is a fixed value configured by the OAM entity, the base station may directly obtain the reduced parameter, and optimize the initial MPDCCH repetition number according to the reduced parameter.

The following describes the mode 1 and the mode 2 separately.

For the above method 1:

For the above method 2:

The reduced product is the product of the preset MCU.

For example, if the maximum number of repetitions r _max configured for the user equipment is 64, the set of MPDCCH repetitions corresponding to 128 is {2, 8, 32, 64}.

The initial MPDCCH repetition number used by the user equipment acquired by the base station is M=32, and the preset reduction parameter is 1/4. Then, the product of the preset value and the number of repetitions of the initial MPDCCH is: M'=floor(M*(1/5))=floor(32*(1/5))=6.

That is, from the MPDCCH repetition number set {2, 8, 32, 64}, the MPDCCH repetition number 8 is not less than 6 and the difference from 6 is the smallest, and the optimized MPDCCH repetition number is 8.

Manner 3: The base station performs optimization processing on the initial MPDCCH repetition number according to a second binding relationship between an aggregation level, an MPDCCH repetition number, and an SINR.

The distributed binding and the centralized transmission correspond to different aggregation levels, the second binding relationship between the MPDCCH repetition times and the SINR. Table 3 shows the second binding relationship between the aggregation level of the distributed transmission and the number of MPDCCH repetitions and the SINR.

For step 201:

The following describes the manner in which the base station that needs to page the user equipment is the same as the base station that the user equipment accesses the last time, and the base station determines the first SINR corresponding to the initial aggregation level and the initial MPDCCH repetition number:

When the base station that needs to page the user equipment is the same as the base station that the user equipment accesses the last time, the base station acquires the initial aggregation level used by the user equipment saved by the user equipment; and according to the obtained initial aggregation level and the initial of the core network notification a number of MPDCCH repetitions, and a first SINR corresponding to determining an initial aggregation level and an initial MPDCCH repetition number;

The first SINR is determined according to the aggregation level, the second binding relationship between the number of MPDCCH repetitions and the SINR, and the initial aggregation level used by the user equipment and the number of initial MPDCCH repetitions. When the connected state enters the idle state, the base station that the user equipment accesses last time acquires the initial aggregation level used by the user equipment, and saves the initial aggregation level used by the user equipment.

When the user equipment needs to be paged, the core network sends the initial aggregation level used by the user equipment and the initial MPDCCH repetition number to the base station that needs to page the user equipment; the base station that needs to page the user equipment according to the aggregation level, The second binding relationship between the number of MPDCCH repetitions and the SINR is determined, and the first SINR corresponding to the initial aggregation level and the initial MPDCCH repetition number is determined.

That is, in the mode, the core network stores the initial aggregation level and the initial MPDCCH repetition number used by the user equipment; and the initial aggregation level used by the user equipment saved by the core network and the initial MPDCCH repetition number are determined by the base station that the user equipment accesses last time. And notify the core network.

The preset range is configured by the OAM entity.

It should be noted that, in step 202, if the transmission mode adopted by the MPDCCH corresponding to the initial aggregation level and the initial MPDCCH repetition number is centralized transmission, the initial aggregation level corresponding to the centralized transmission and the initial MPDCCH repetition number and the SINR are After the first SINR is determined, the transmission mode of the MPDCCH used by the paging message is a distributed transmission, and the second aggregation of the initial aggregation level and the initial MPDCCH repetition number and the SINR according to the distributed transmission is required. Relationship, determine the target SINR.

The following describes the mode 1 and the mode 2 separately.

For mode 1:

For mode 2:

The manner in which the number of MPDCCH repetitions is smaller than the number of repetitions of the MPDCCH is the same as that of the MPDCCH.

Based on the same inventive concept, the first embodiment of the present application further provides a base station that determines the number of repetitions of the MPDCCH. The method for determining the number of repetitions of the MPDCCH is similar to the method for determining the number of repetitions of the MPDCCH in the embodiment of the present application. Therefore, the implementation of the base station can be referred to the implementation of the method, and the repeated description is not repeated.

As shown in FIG. 3, in the embodiment of the present application, a first base station that determines the number of repetitions of an MPDCCH includes:

The obtaining module 301 is configured to obtain an initial number of MPDCCH repetitions used by the user equipment, where the initial MPDCCH repetition number is the number of MPDCCH repetitions used when the user equipment accesses the network most recently, or the user equipment enters from the connected state. The number of MPDCCH repetitions last used before the idle state;

The processing module 302 is configured to perform optimization processing on the initial MPDCCH repetition times, and use the optimized MPDCCH repetition number as the MPDCCH repetition number corresponding to the user equipment, where the optimized MPDCCH repetition number is smaller than the initial MPDCCH repeat times.

Optionally, if the base station is a base station that is accessed before the user equipment enters an idle state from a connected state, the processing module 302 is further configured to:

Optionally, if the base station is a base station that needs to page the user equipment, the acquiring module 301 is further configured to:

The processing module 302 is further configured to:

Optionally, the processing module 302 is specifically configured to:

As shown in FIG. 4, in the second embodiment of the present application, a base station that determines the number of repetitions of an MPDCCH includes:

The processor 401 is configured to send and receive data through the transceiver 402, and read the program in the memory 404, and perform the following process:

The transceiver 402 is configured to receive and transmit data under the control of the processor 401.

Optionally, if the base station is a base station that is accessed before the user equipment enters an idle state from a connected state, the processor 401 is further configured to:

After the number of the MPDCCH repetitions is optimized, and the number of the MPDCCH repetitions is used as the MPDCCH repetition number of the user equipment, the MPDCCH repetition number corresponding to the user equipment is sent to the core network, so that the When the user equipment is paging, the core network notifies the base station to send a paging message to the user equipment by using the MPDCCH repetition number corresponding to the user equipment.

Optionally, if the base station is a base station that needs to page the user equipment, the processor 401 is further configured to:

The processor 401 is further configured to:

Optionally, the processor 401 is specifically configured to:

In FIG. 4, a bus architecture (represented by bus 400), bus 400 may include any number of interconnected buses and bridges, and bus 400 will include one or more processors represented by processor 401 and memory represented by memory 404. The various circuits are linked together. The bus 400 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art and, therefore, will not be further described herein. Bus interface 403 provides an interface between bus 400 and transceiver 402. Transceiver 402 can be an element or a plurality of elements, such as a plurality of receivers and transmitters, providing means for communicating with various other devices on a transmission medium. The data processed by the processor 401 is transmitted over the wireless medium via the antenna 405. Further, the antenna 405 also receives the data and transmits the data to the processor 401.

The processor 401 is responsible for managing the bus 400 and the usual processing, and can also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. The memory 404 can be used to store data used by the processor 401 in performing operations.

Optionally, the processor 401 may be a CPU (Central Embedded Device), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device). , complex programmable logic devices).

An embodiment of the present invention provides a readable storage medium, which is a non-volatile storage medium, including program code, when the program code is run on a computing device, the program code is used to make the The computing device performs the actions of the terminal described above.

The present application has been described above with reference to block diagrams and/or flowchart illustrations of a method, apparatus (system) and/or computer program product according to embodiments of the present application. It will be understood that one block of the block diagrams and/or flowchart illustrations and combinations of blocks of the block diagrams and/or flowchart illustrations can be implemented by computer program instructions. These computer program instructions may be provided to a general purpose computer, a processor of a special purpose computer, and/or other programmable data processing apparatus to produce a machine such that instructions for execution via a computer processor and/or other programmable data processing apparatus are created for A method of implementing the functions/actions specified in the block diagrams and/or flowchart blocks.

Accordingly, the application can also be implemented in hardware and/or software (including firmware, resident software, microcode, etc.). Still further, the application can take the form of a computer program product on a computer usable or computer readable storage medium having computer usable or computer readable program code embodied in a medium for use by an instruction execution system or Used in conjunction with the instruction execution system. In the context of the present application, a computer usable or computer readable medium can be any medium that can contain, store, communicate, communicate, or transport a program for use by an instruction execution system, apparatus or device, or in conjunction with an instruction execution system, Used by the device or device.

It will be apparent to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit and scope of the application. Thus, it is intended that the present invention cover the modifications and variations of the present invention.

Claims

A method for determining a number of MPDCCH repetitions of a machine type communication downlink control channel, the method comprising:

The base station acquires the initial number of MPDCCH repetitions used by the user equipment, where the initial number of MPDCCH repetitions is the number of MPDCCH repetitions used when the user equipment accesses the network most recently, or the last time before the user equipment enters the idle state from the connected state. The number of MPDCCH repetitions used;

The base station performs an optimization process on the number of repetitions of the initial MPDCCH, and uses the optimized number of MPDCCH repetitions as the number of MPDCCH repetitions corresponding to the user equipment; wherein the optimized MPDCCH repetition number is smaller than the initial MPDCCH repetition number.
The method according to claim 1, wherein if the base station is a base station that the user equipment accesses before entering the idle state from the connected state, the base station optimizes the initial MPDCCH repetition times, and After the MPDCCH repetition number is used as the MPDCCH repetition number corresponding to the user equipment, the method further includes:

Sending, by the base station, the MPDCCH repetition number corresponding to the user equipment to the core network, so that the core network notifies the base station to use the MPDCCH repetition number corresponding to the user equipment to send the opposite to the user equipment when paging the user equipment A paging message of the user equipment.
The method according to claim 1, wherein, if the base station is a base station that needs to page the user equipment, before the base station acquires an initial number of MPDCCH repetitions used by the user equipment, the method further includes:

Receiving, by the base station, a paging message that is sent by the core network and includes the number of repetitions of the initial MPDCCH;

After the base station optimizes the initial MPDCCH repetition times, and the optimized MPDCCH repetition number is used as the MPDCCH repetition number corresponding to the user equipment, the method further includes:

The base station sends a paging message to the user equipment by using the MPDCCH repetition number.
The method according to any one of claims 1 to 3, wherein the base station performs optimization processing on the number of repetitions of the initial MPDCCH, including:

The base station performs an optimization process on the number of repetitions of the initial MPDCCH according to the reduced parameter.
The method according to claim 4, wherein the reduction parameter is a ratio of an initial aggregation level corresponding to a maximum aggregation level of the initial MPDCCH repetition number, or the reduction parameter is a preset value.
The method according to claim 4, wherein the base station performs optimization processing on the number of repetitions of the initial MPDCCH according to the reduced parameter, including:

And the base station uses, as the optimized MPDCCH repetition quantity, a product of the reduced parameter and the initial MPDCCH repetition number; or

Determining, by the base station, a set of MPDCCH repetition times corresponding to a maximum number of repetitions configured by the user equipment according to a first binding relationship between a maximum number of repetitions and a set of the number of repetitions of the MPDCCH; determining, by the set of the MPDCCH repetition times, not less than The product of the reduction parameter and the number of repetitions of the initial MPDCCH, and the MPDCCH repetition number having the smallest difference from the product, is used as the optimized MPDCCH repetition number.
The method according to any one of claims 1 to 3, wherein the base station performs optimization processing on the number of repetitions of the initial MPDCCH, including:

The base station performs an optimization process on the number of repetitions of the initial MPDCCH according to a second binding relationship between an aggregation level, an MPDCCH repetition number, and a signal to interference plus noise ratio SINR.
The method according to claim 7, wherein the base station optimizes the initial MPDCCH repetition times according to the second binding relationship between the aggregation level, the MPDCCH repetition number and the SINR, including:

Determining, by the base station, the first SINR corresponding to the initial aggregation level used by the user equipment and the initial MPDCCH repetition number according to the second binding relationship;

Determining, by the base station, the at least one target SINR that is within a preset range from the SINR corresponding to the highest aggregation level;

And determining, by the base station, the optimized number of MPDCCH repetitions according to the at least one target SINR.
The method according to claim 8, wherein the base station determines the optimized number of MPDCCH repetitions according to the at least one target SINR, including:

The base station selects, from the number of MPDCCH repetitions corresponding to the at least one target SINR, an MPDCCH repetition number that is smaller than the initial MPDCCH repetition number, as the optimized MPDCCH repetition number; or

And the base station selects, according to the MPDCCH repetition number corresponding to the at least one target SINR, an MPDCCH repetition number that is smaller than the initial MPDCCH repetition number; and determines, according to the first binding relationship between the maximum repetition quantity and the MPDCCH repetition quantity set, Determining, by the MPDCCH repetition number set, a number of MPDCCH repetition times corresponding to the maximum number of repetitions of the MPDCCH, and determining that the MPDCCH repetition number is not smaller than the selected MPDCCH repetition number, and the difference between the selected MPDCCH repetition times and the selected MPDCCH repetition number is the smallest The number of MPDCCH repetitions is used as the number of times of the optimized MPDCCH repetition.
A base station for determining a number of repetitions of a MPDCCH of a downlink communication channel of a machine type communication, comprising:

An acquiring module, configured to acquire an initial number of MPDCCH repetitions used by the user equipment, where the initial MPDCCH repetition number is the number of MPDCCH repetitions used when the user equipment accesses the network most recently, or the user equipment enters the idle state from the connected state. The number of MPDCCH repetitions last used before the state;

a processing module, configured to perform an optimization process on the initial MPDCCH repetition number, and use the optimized MPDCCH repetition number as the MPDCCH repetition number corresponding to the user equipment; where the optimized MPDCCH repetition number is smaller than the initial MPDCCH repetition frequency.
The base station according to claim 10, wherein the processing module is further configured to: if the base station is a base station that is accessed before the user equipment enters an idle state from a connected state, the processing module is further configured to:

After the number of the MPDCCH repetitions is optimized, and the number of the MPDCCH repetitions is used as the MPDCCH repetition number corresponding to the user equipment, the MPDCCH repetition number corresponding to the user equipment is sent to the core network, so that the When the user equipment is paging, the core network notifies the base station to send a paging message to the user equipment by using the MPDCCH repetition number corresponding to the user equipment.
The base station according to claim 10, wherein if the base station is a base station that needs to page the user equipment, the acquiring module is further configured to:

Receiving, by the core network, a paging message that includes the number of repetitions of the initial MPDCCH, before acquiring an initial number of MPDCCH repetitions used by the user equipment;

The processing module is further configured to:

After the initial MPDCCH repetition number is optimized, and the optimized MPDCCH repetition number is used as the MPDCCH repetition number corresponding to the user equipment, the paging message to the user equipment is sent by using the MPDCCH repetition number.
The base station according to any one of claims 10 to 12, wherein the processing module is specifically configured to:

The initial MPDCCH repetition times are optimized according to the reduced parameters.
The base station according to claim 13, wherein the reduction parameter is a ratio of an initial aggregation level corresponding to a maximum aggregation level of the initial MPDCCH repetition number, or the reduction parameter is a preset value.
The base station according to claim 13, wherein the processing module is specifically configured to:

And multiplying the reduced parameter by the number of repetitions of the initial MPDCCH as the optimized number of MPDCCH repetitions; or

Determining, according to a first binding relationship between the maximum number of repetitions and the MPDCCH repetition number set, a set of MPDCCH repetition times corresponding to a maximum number of repetitions configured by the user equipment; determining, from the set of MPDCCH repetition times, not less than the reduction parameter The number of repetitions of the MPDCCH that is the product of the number of repetitions of the initial MPDCCH and the smallest difference from the product, as the number of repetitions of the optimized MPDCCH.
The base station according to any one of claims 10 to 12, wherein the processing module is specifically configured to:

The initial MPDCCH repetition times are optimized according to the second binding relationship between the aggregation level, the number of MPDCCH repetitions, and the SINR.
The base station according to claim 16, wherein the processing module is specifically configured to:

Determining, according to the second binding relationship, a first SINR corresponding to an initial aggregation level used by the user equipment and an initial MPDCCH repetition number; and determining, by using an SINR corresponding to the highest aggregation level, a difference from the first SINR. At least one target SINR within a preset range; determining an optimized number of MPDCCH repetitions according to the at least one target SINR.
The base station according to claim 17, wherein the processing module is specifically configured to:

And selecting, from the number of MPDCCH repetitions corresponding to the at least one target SINR, an MPDCCH repetition number that is smaller than the initial MPDCCH repetition number, as the optimized MPDCCH repetition number; or

And selecting, according to the MPDCCH repetition number corresponding to the at least one target SINR, an MPDCCH repetition number that is smaller than the initial MPDCCH repetition number; determining, according to the first binding relationship between the maximum repetition quantity and the MPDCCH repetition quantity set, the user equipment And a set of MPDCCH repetition times corresponding to the maximum number of repetitions, and determining, from the MPDCCH repetition number set, an MPDCCH repetition number that is not less than the selected MPDCCH repetition number and the smallest difference from the selected MPDCCH repetition times As the optimized number of MPDCCH repetitions.
A base station for determining a number of repetitions of a MPDCCH of a downlink communication channel of a machine type communication, comprising:

A processor for transmitting and receiving data through the transceiver and reading the program in the memory, performing the following process:

Obtaining an initial MPDCCH repetition number used by the user equipment, where the initial MPDCCH repetition number is the MPDCCH repetition number used when the user equipment accesses the network most recently, or the user equipment last used before entering the idle state from the connected state. And the number of MPDCCH repetitions is optimized, and the number of the MPDCCH repetitions is used as the MPDCCH repetition number corresponding to the user equipment; wherein the optimized MPDCCH repetition number is smaller than the initial MPDCCH repetition frequency.
The base station according to claim 19, wherein the processor is further configured to: if the base station is a base station that is accessed before the user equipment enters an idle state from a connected state, the processor is further configured to:

After the number of the MPDCCH repetitions is optimized, and the number of the MPDCCH repetitions is used as the MPDCCH repetition number corresponding to the user equipment, the MPDCCH repetition number corresponding to the user equipment is sent to the core network, so that the When the user equipment is paging, the core network notifies the base station to send a paging message to the user equipment by using the MPDCCH repetition number corresponding to the user equipment.
The base station according to claim 19, wherein if the base station is a base station that needs to page the user equipment, the processor is further configured to:

Receiving, by the core network, a paging message that includes the number of repetitions of the initial MPDCCH, before acquiring an initial number of MPDCCH repetitions used by the user equipment;

After the initial MPDCCH repetition number is optimized, and the optimized MPDCCH repetition number is used as the MPDCCH repetition number corresponding to the user equipment, the paging message to the user equipment is sent by using the MPDCCH repetition number.
The base station according to any one of claims 19 to 21, wherein the processor is specifically configured to:

The initial MPDCCH repetition times are optimized according to the reduced parameters.
The base station according to claim 22, wherein the reduction parameter is a ratio of an initial aggregation level corresponding to a maximum aggregation level of the initial MPDCCH repetition number, or the reduction parameter is a preset value.
The base station according to claim 22, wherein the processor is specifically configured to:

And multiplying the reduced parameter by the number of repetitions of the initial MPDCCH as the optimized number of MPDCCH repetitions; or

Determining, according to a first binding relationship between the maximum number of repetitions and the MPDCCH repetition number set, a set of MPDCCH repetition times corresponding to a maximum number of repetitions configured by the user equipment; determining, from the set of MPDCCH repetition times, not less than the reduction parameter The number of repetitions of the MPDCCH that is the product of the number of repetitions of the initial MPDCCH and the smallest difference from the product, as the number of repetitions of the optimized MPDCCH.
The base station according to any one of claims 19 to 21, wherein the processor is specifically configured to:

The initial MPDCCH repetition number is optimized according to the second binding relationship between the aggregation level, the MPDCCH repetition number, and the SINR.
The base station according to claim 25, wherein the processor is specifically configured to:

Determining, according to the second binding relationship, a first SINR corresponding to an initial aggregation level used by the user equipment and an initial MPDCCH repetition number; and determining, by using an SINR corresponding to the highest aggregation level, a difference from the first SINR. At least one target SINR within a preset range; determining an optimized number of MPDCCH repetitions according to the at least one target SINR.
The base station according to claim 26, wherein the processor is specifically configured to:

And selecting, from the number of MPDCCH repetitions corresponding to the at least one target SINR, an MPDCCH repetition number that is smaller than the initial MPDCCH repetition number, as the optimized MPDCCH repetition number; or

And selecting, according to the MPDCCH repetition number corresponding to the at least one target SINR, an MPDCCH repetition number that is smaller than the initial MPDCCH repetition number; determining, according to the first binding relationship between the maximum repetition quantity and the MPDCCH repetition quantity set, the user equipment And a set of MPDCCH repetition times corresponding to the maximum number of repetitions, and determining, from the MPDCCH repetition number set, an MPDCCH repetition number that is not less than the selected MPDCCH repetition number and the smallest difference from the selected MPDCCH repetition times As the optimized number of MPDCCH repetitions.
A cache synchronization exception device readable storage medium, comprising program code for causing the computing device to perform any of claims 1-9 when the program code is run on a computing device The steps of the method.