WO2016115666A1

WO2016115666A1 - Method and apparatus for determining gp length and sending uplink data packet

Info

Publication number: WO2016115666A1
Application number: PCT/CN2015/071024
Authority: WO
Inventors: 金哲; 刘铮
Original assignee: 华为技术有限公司
Priority date: 2015-01-19
Filing date: 2015-01-19
Publication date: 2016-07-28
Also published as: CN106465364B; CN106465364A

Abstract

The present invention relates to the technical field of communications, and in particular to a method and apparatus for determining a GP length and sending an uplink data packet for solving the technical problem of there being no method capable of avoiding uplink transmission collision more efficiently. In the embodiments of the present invention, a base station can determine configuration information about all MTC devices within a coverage range of the base station, determine a first GP length according the determined information, and indicate the first GP length to the MTC devices, so that the MTC devices do not send any uplink data within a time period indicated by the first GP length, thereby avoiding collision between uplink data packets as far as possible.

Description

GP length determination, uplink data packet transmission method and device

Technical field

The present invention relates to the field of communications technologies, and in particular, to a GP length determination, uplink data packet sending method and apparatus.

Background technique

IoT (Internet of things, Internet of Things) is "the Internet of things connected." It extends the client side of the Internet between any item and item for information exchange and communication. Such a communication method is also called MTC (Machine type communications), and a user node for communication is called an MTC device. Typical Internet of Things applications include smart meter reading, smart homes, and more.

In a cellular network, because the user equipment (UE) is different from the base station, different transmission delays are experienced in the transmission process, which causes the uplink transmission data packets from different UEs to arrive at the base station. This misalignment in the arrival time may cause collisions between uplink transmission packets from different UEs, affecting reception performance. The greater the difference in distance between the two UEs and the base station, the larger the area where collisions may occur and the worse the performance. For example, as shown in FIG. 1, slot indicates a time slot, and scheduling UE1 (ie, the planned duration of user equipment 1 in FIG. 1) indicates that the base station receives the uplink packet time sent by UE1 if there is no transmission delay. The scheduling UE2 (ie, the planned duration of the user equipment 2 in FIG. 1) indicates that the base station assumes that the uplink data packet sent by the UE2 is transmitted without a transmission delay. It can be seen that the different distances between the UE1 and the UE2 to the base station cause their uplink. The transmission experiences different transmission delays (represented by d1 and d2 in Fig. 1, respectively), resulting in collisions between the uplink transmissions of UE1 and UE2 (i.e., the intersection of the two uplink data packets in Fig. 1).

In the prior art, in order to avoid such a collision as much as possible, in a cellular network such as LTE (Long Term Evolution), a commonly used method is that the base station configures an uplink transmission advance (TA) for each UE. Then, the base station sends the configured information to each UE separately, so as to separate the time of receiving the data packets sent by each UE as much as possible to avoid collision. Of course However, configuring the uplink transmission time advancement requires a relatively complex random access procedure, and also requires the base station to frequently update the uplink transmission time advancement configured for different UEs to adapt to the environment change, and the implementation complexity is high. Moreover, for the M2M (Machine-To-Machine) system, in most cases, the service packets sent are very small, and the TA mechanism introduces relatively large signaling overhead and wastes network resources.

Summary of the invention

Embodiments of the present invention provide a GP length determination, an uplink data packet sending method, and a device, which are used to solve the technical problem of a method for avoiding an uplink transmission collision in a narrowband M2M system.

A first aspect of the present invention provides a method for determining a GP length, including:

Determining, by the base station, a first GP length according to configuration information of all MTC devices in the coverage of the base station;

Transmitting, by the base station, the first GP length to all MTC devices in the coverage of the base station, where the first GP length is used to indicate that the MTC device receiving the first GP length does not send any uplink The time period of the packet.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the configuration information includes a distribution of all the MTC devices in the coverage of the base station, a length of time for the MTC device to send the uplink symbol, and an MTC device. At least one of the number of symbols included in the transmitted upstream packet.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the base station sends the first GP length to the coverage of the base station All MTC devices, including:

The base station sends the first GP length to all MTC devices in the coverage of the base station by static signaling or semi-static signaling.

A second aspect of the present invention provides an uplink data packet sending method, including:

The MTC device determines the first GP length according to the configuration information of the MTC device;

Transmitting, by the MTC device, an uplink data packet carrying the first GP length to the base station, to The base station does not send any uplink data packet in the time period indicated by the first GP length.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the configuration information includes a length of time for the MTC device to send an uplink symbol, and/or an uplink data packet sent by the MTC device includes The number of symbols.

With reference to the second aspect or the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the MTC device determines, according to the configuration information of the MTC device, the first GP length, including:

The MTC device determines the first GP length according to the configuration information of the MTC device and according to a first correspondence between the configuration information of the pre-stored MTC device and the GP length.

With reference to the second possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, the MTC device is configured according to the configuration information of the MTC device, and according to the configuration of the pre-stored MTC device The first correspondence between the information and the GP length, before determining the first GP length, further includes:

The MTC device receives a first indication message sent by the base station, where the first indication message is used to instruct the MTC device to select a correspondence between configuration information of a plurality of MTC devices stored in advance and a GP length. Determining the first correspondence to determine the first GP length.

With reference to the second aspect or the first possible implementation of the second aspect to any one of the third possible implementation manners, in a fourth possible implementation manner of the second aspect,

Before determining, by the MTC device, the first GP length, according to the configuration information of the MTC device, the method further includes:

Receiving, by the MTC device, a second indication message sent by the base station;

Determining, by the MTC device, the first GP length according to the configuration information of the MTC device, if the second indication message is used to instruct the MTC device to enable a function of determining a GP length, the MTC device according to the MTC device The configuration information determines the first GP length.

A third aspect of the present invention provides a method for determining a GP length, including:

The base station acquires configuration information of the MTC device;

The base station determines a first GP length according to the configuration information of the MTC device, where the first GP length is a time period for indicating that the MTC device does not send any uplink data packet.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the configuration information includes a length of time for the MTC device to send an uplink symbol, and/or an uplink data packet sent by the MTC device includes The number of symbols.

With reference to the third aspect, or the first possible implementation manner of the third aspect, in a second possible implementation manner of the third aspect, the base station determines, according to configuration information of the MTC device, a first GP length, including :

The base station determines the first GP length according to the configuration information of the MTC device and according to a first correspondence between the configuration information of the pre-stored MTC device and the GP length.

With reference to the second possible implementation manner of the third aspect, in a third possible implementation manner of the third aspect, the base station is configured according to the configuration information of the MTC device, and according to configuration information of the pre-stored MTC device Before determining the first GP length, the first correspondence between the GP length and the GP length includes:

Determining, by the base station, the first correspondence from the correspondence between the configuration information of the pre-stored MTC device and the GP length according to the distribution of all the MTC devices in the coverage of the base station to determine the first GP. length;

The base station indicates the first correspondence to the MTC device.

With reference to the third aspect, or the first possible implementation manner of the third aspect, to any one of the third possible implementation manners, in a fourth possible implementation manner of the third aspect, The method also includes:

The base station sends a second indication message to the MTC device, where the second indication message is used to instruct the MTC device to enable a function of determining a GP length.

A fourth aspect of the present invention provides a base station, including:

a determining module, configured to determine, according to configuration information of all MTC devices in the coverage of the base station, a first GP length;

a sending module, configured to send the first GP length to all MTC devices in the coverage of the base station, where the first GP length is used to indicate that the MTC device that receives the first GP length does not send The time period of any upstream packet.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the configuration information includes a distribution of all the MTC devices in the coverage of the base station, a length of time for the MTC device to send the uplink symbol, and an MTC device. At least one of the number of symbols included in the transmitted upstream packet.

With reference to the fourth aspect, or the first possible implementation manner of the fourth aspect, in the second possible implementation manner of the fourth aspect, the sending module is specifically configured to:

The first GP length is sent to all MTC devices within the coverage of the base station by static signaling or semi-static signaling.

According to a fifth aspect of the present invention, an MTC device is provided, including:

a determining module, configured to determine a first GP length according to the configuration information of the MTC device;

And a sending module, configured to send, to the base station, an uplink data packet carrying the first GP length, to notify the base station that the MTC device does not send any uplink data packet within a time period indicated by the first GP length.

With reference to the fifth aspect, in a first possible implementation manner of the fifth aspect, the configuration information includes a length of time for the MTC device to send an uplink symbol, and/or an uplink data packet sent by the MTC device includes The number of symbols.

With reference to the fifth aspect or the first possible implementation manner of the fifth aspect, in a second possible implementation manner of the fifth aspect, the determining module is specifically configured to:

Determining the first GP length according to the configuration information of the MTC device and according to a first correspondence between the configuration information of the pre-stored MTC device and the GP length.

With the second possible implementation of the fifth aspect, in a third possible implementation manner of the fifth aspect, the MTC device further includes: a receiving module, configured to:

Determining, by the determining module, the first GP length according to the configuration information of the MTC device, and according to a first correspondence between the configuration information of the pre-stored MTC device and the GP length Before receiving the first indication message sent by the base station, the first indication message is used to indicate that the MTC device selects the correspondence between the configuration information of the plurality of MTC devices and the GP length stored in advance. The first correspondence determines the first GP length.

With reference to the fifth aspect or the first possible implementation manner of the fifth aspect, the possible implementation manner of the third possible implementation manner, in the fourth possible implementation manner of the fifth aspect, The MTC device also includes a receiving module for:

Receiving, by the determining module, the second indication message sent by the base station before determining the first GP length according to the configuration information of the MTC device;

The determining module is specifically configured to determine the first GP length according to the configuration information of the MTC device, if the second indication message is used to instruct the MTC device to enable the function of determining the GP length.

A sixth aspect of the present invention provides a base station, including:

Obtaining a module, configured to acquire configuration information of the MTC device;

And a determining module, configured to determine, according to configuration information of the MTC device, a first GP length, where the first GP length is a time period used to indicate that the MTC device does not send any uplink data packet.

With reference to the sixth aspect, in a first possible implementation manner of the sixth aspect, the configuration information includes a length of time for the MTC device to send an uplink symbol, and/or an uplink data packet sent by the MTC device includes The number of symbols.

With reference to the sixth aspect, or the first possible implementation manner of the sixth aspect, in the second possible implementation manner of the sixth aspect, the determining module is specifically configured to:

With reference to the second possible implementation manner of the sixth aspect, in a third possible implementation manner of the sixth aspect, the base station further includes a selecting module and an indicating module;

The selecting module is configured to: in the determining module, according to the configuration information of the MTC device, and according to a first correspondence between the pre-stored configuration information of the MTC device and the GP length, Before the first GP length is determined, according to the distribution of all the MTC devices in the coverage of the base station, the first correspondence is selected from the correspondence between the configuration information of the pre-stored MTC device and the GP length. Determining the first GP length;

The indication module is configured to: indicate the first correspondence to the MTC device.

With reference to the sixth aspect, or the first possible implementation manner of the sixth aspect, the possible implementation manner of the third possible implementation manner, in the fourth possible implementation manner of the sixth aspect, The base station further includes a sending module, configured to:

Sending a second indication message to the MTC device, where the second indication message is used to instruct the MTC device to enable a function of determining a GP length.

A seventh aspect of the present invention provides a base station including a memory, a processor, and a transmitter connected to the same bus;

The memory is configured to store an instruction;

The processor is configured to execute the instruction, and determine, according to configuration information of all MTC devices in the coverage of the base station, a first GP length;

The transmitter is configured to send the first GP length to all MTC devices in the coverage of the base station, where the first GP length is an MTC device used to indicate that the first GP length is received The time period during which no upstream packets are sent.

With reference to the seventh aspect, in a first possible implementation manner of the seventh aspect, the configuration information includes a distribution of all the MTC devices in the coverage of the base station, a length of time for the MTC device to send the uplink symbol, and an MTC device. At least one of the number of symbols included in the transmitted upstream packet.

With reference to the seventh aspect, or the first possible implementation manner of the seventh aspect, in a second possible implementation manner of the seventh aspect, the transmitter is specifically configured to:

An eighth aspect of the present invention provides an MTC device including a memory, a processor, and a transmitter connected to a same bus;

The memory is configured to store an instruction;

The processor is configured to execute the instruction, and determine, according to configuration information of the MTC device, a first GP length;

The transmitter is configured to: when the uplink data packet carrying the first GP length is sent to the base station, notify the base station that the MTC device does not send any uplink data packet within a time period indicated by the first GP length. .

With reference to the eighth aspect, in a first possible implementation manner of the eighth aspect, the configuration information includes a length of time for the MTC device to send an uplink symbol, and/or an uplink data packet sent by the MTC device includes The number of symbols.

With reference to the eighth aspect, or the first possible implementation manner of the eighth aspect, in a second possible implementation manner of the eighth aspect, the processor is specifically configured to:

Executing the instruction, determining the first GP length according to the configuration information of the MTC device, and according to a first correspondence between the pre-stored configuration information of the MTC device and the GP length.

In conjunction with the second possible implementation of the eighth aspect, in a third possible implementation of the eighth aspect, the MTC device further includes a receiver connected to the bus;

The receiver is configured to: before the first GP length is determined by the processor according to the configuration information of the MTC device, and according to a first correspondence between pre-stored configuration information of the MTC device and a GP length, Receiving a first indication message sent by the base station; the first indication message is used to instruct the MTC device to select the first correspondence from a correspondence between configuration information of a plurality of MTC devices and a GP length stored in advance Relationship to determine the first GP length.

With reference to the eighth aspect, or the first possible implementation manner of the eighth aspect, to any one of the third possible implementation manners, in a fourth possible implementation manner of the eighth aspect, The MTC device also includes a receiver coupled to the bus;

The receiver is configured to: before the determining, by the processor, the first GP length, according to the configuration information of the MTC device, receiving a second indication message sent by the base station;

The processor is specifically configured to: execute the instruction, if the second indication message is used to indicate The MTC device starts the function of determining the GP length, and determines the first GP length according to the configuration information of the MTC device.

A ninth aspect of the present invention provides a base station including a memory and a processor connected to the same bus;

The memory is configured to store an instruction;

The processor is configured to execute the instruction, obtain configuration information of the MTC device, and determine a first GP length according to the configuration information of the MTC device, where the first GP length is used to indicate the MTC device The time period during which no upstream packets are sent.

With reference to the ninth aspect, in a first possible implementation manner of the ninth aspect, the configuration information includes a length of time for the MTC device to send an uplink symbol, and/or an uplink data packet sent by the MTC device includes The number of symbols.

With reference to the ninth aspect, or the first possible implementation manner of the ninth aspect, in a second possible implementation manner of the ninth aspect, the processor is configured to determine, according to configuration information of the MTC device, a first GP length ,Specifically:

In conjunction with the second possible implementation of the ninth aspect, in a third possible implementation manner of the ninth aspect, the base station further includes a transmitter connected to the bus;

The processor is further configured to: execute the instruction, determine the first GP according to the first correspondence between the configuration information of the MTC device and the pre-stored configuration information of the MTC device and the GP length. Before the length, the first correspondence is determined from the correspondence between the configuration information of the pre-stored MTC device and the GP length according to the distribution of all the MTC devices in the coverage of the base station to determine the first GP. length;

The transmitter is configured to: indicate the first correspondence to the MTC device.

With reference to the ninth aspect, or the first possible implementation manner of the ninth aspect, to any one of the third possible implementation manners, in a fourth possible implementation manner of the ninth aspect, The base station also includes a transmitter coupled to the bus;

The transmitter is configured to send a second indication message to the MTC device, where the second indication message is used to instruct the MTC device to enable a function of determining a GP length.

In the embodiment of the present invention, the configuration information of all the MTC devices in the coverage of the base station may be determined. For example, the configuration information may include the length of time that the MTC device sends the uplink symbol, the number of uplink symbols included in the uplink data packet sent by the MTC device, and the like. Therefore, the GP length (ie, the first GP length) may be determined according to the determined configuration information, and the MTC device may send the first GP length and the uplink data packet together when sending the uplink data packet to the base station, where During the length of the first GP, the MTC device does not send any data, so that collisions during the uplink transmission can be avoided as much as possible.

DRAWINGS

1 is a schematic diagram of a situation in which an uplink data packet collides in the prior art;

2 is a main flowchart of a method for determining a first GP length according to an embodiment of the present invention;

3A is a schematic diagram of attaching a first GP length to a front end of an uplink data packet according to an embodiment of the present invention;

FIG. 3B is a schematic diagram of attaching a first GP length to a back end of an uplink data packet according to an embodiment of the present invention; FIG.

3C is a schematic diagram of dividing a first GP length into two parts and attaching the two parts to a front end and a back end of an uplink data packet according to an embodiment of the present invention;

4 is an interaction flowchart of a first GP length determining manner according to an embodiment of the present invention;

5 is a main flowchart of an uplink data packet sending method implemented by an MTC device in a second GP length determining manner according to an embodiment of the present invention;

6 is a main flowchart of a method for determining a GP length implemented by a base station in a second GP length determining manner according to an embodiment of the present invention;

FIG. 7 is a structural block diagram of a base station according to an embodiment of the present invention;

8 is a structural block diagram of an MTC device according to an embodiment of the present invention;

9 is another structural block diagram of a base station according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a base station according to an embodiment of the present invention;

11 is a schematic structural diagram of an MTC device according to an embodiment of the present invention;

FIG. 12 is another schematic structural diagram of a base station according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The techniques described herein may be used in various IoT narrowband communication systems, such as single carrier based narrowband communication systems, or multi-carrier based narrowband communication systems, and the like.

Various aspects are described herein in connection with user equipment and/or network equipment.

The User Equipment (UE) in the embodiment of the present invention refers to an MTC device, and specifically may be a wireless terminal.

A network device, such as a base station or an access point, may specifically refer to a device in an access network that communicates with a wireless terminal over one or more sectors over an air interface. The base station can be used to convert the received air frame with an IP (Internet Protocol) packet as a router between the wireless terminal and the rest of the access network, wherein the rest of the access network can include an IP network. The base station can also coordinate attribute management of the air interface. Specifically, the base station in the embodiment of the present invention may refer to a base station in an Internet of Things narrowband communication network.

The communication system in which the base station and the MTC device are located in the embodiment of the present invention may specifically refer to a narrowband M2M communication system.

Additionally, the terms "system" and "network" are used interchangeably herein. The term "and/or" in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations. In addition, the character "/" in this article, unless otherwise specified, generally indicates that the contextual object is a An "or" relationship.

In general, the embodiment of the present invention includes two GP (Guard Period) length determination methods.

The first type of GP length determination mode: the base station determines the GP length;

The second GP length determination mode: the base station and the MTC device use the same method to determine the GP length once, and because the methods used are the same, the GP length determined by the base station and the MTC device is the same. Certainly, in the second GP length determining manner, the determining method used by the base station and the MTC device may be the same as the determining method used by the base station in the first mode, or may be different.

The two GP length determination methods in the embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

Referring to FIG. 2, an embodiment of the present invention provides a method for determining a GP length. The embodiment of FIG. 2 is a specific process of determining a first GP length in the foregoing embodiment of the present invention. The main flow of the method is described below.

Step 201: The base station determines the first GP length according to configuration information of all MTC devices in the coverage of the base station.

In the embodiment of the present invention, the configuration information of the MTC device, which may also be referred to as the scheduling information of the MTC device, is controlled and adjusted by the base station, and thus is known to the base station in advance.

Optionally, in the embodiment of the present invention, the configuration information may include: a distribution of all the MTC devices in the coverage of the base station, a length of time for the MTC device to send the uplink symbol, and an uplink data packet sent by the MTC device. At least one of the number of symbols.

The distribution of the MTC devices mainly refers to the physical space distribution of all MTC devices within the coverage of the base station. For example, if the mutual difference between the distances of all the MTC devices in the coverage of the base station and the base station is relatively small, the base station may make the first GP length shorter because if the MTC device and the base station If the difference between the distances is small, the difference in delay between them is relatively small, and the required GP length is naturally small, saving system resources.

For the length of time that the MTC device sends the uplink symbol, if the MTC device sends the upper The longer the length of the line symbol is, the stronger the uplink data packet sent by the MTC device is tolerant to the collision, and the base station can make the first GP length shorter and save system resources.

The number of symbols included in the uplink data packet (burst) sent by the MTC device is similar to the consideration of the length of time for the MTC device to send the uplink symbol, that is, the number of symbols included in the uplink data packet sent by the MTC device is larger. The stronger the uplink packet sent by the MTC device is tolerant to the collision, the base station can make the first GP length shorter and save system resources.

The base station may determine the first GP length according to one or any of the above factors. To determine the first GP length according to the above factors, it is necessary to comprehensively consider various factors to obtain the first GP length.

In the embodiment of the present invention, the GP length determined by the base station according to the configuration information of all the MTC devices in the coverage of the base station is such that the determined GP length is more in line with the actual situation, and the determined GP length can be ensured as much as possible to avoid Waste of resources.

Step 202: The base station sends the first GP length to all the MTC devices in the coverage of the base station, where the first GP length is used to indicate that the MTC device that receives the first GP length does not The time period during which any upstream packets are sent.

Specifically, the first GP length is used to: when all the MTC devices in the coverage of the base station send the uplink data packet, carry the first GP length, and the time indicated by the first GP length No upstream packets are sent within the segment.

In this embodiment, all MTC devices within the coverage of the base station can use the same GP length (ie, the first GP length) to send uplink data packets.

Optionally, in the embodiment of the present invention, the base station sends the first GP length to all the MTC devices in the coverage of the base station, including:

The base station separately sends the first GP length to all MTC devices in the coverage of the base station by using static signaling or semi-static signaling.

In the embodiment of the present invention, it is considered that the MTC devices in the narrowband M2M system are basically in a static state, or the mobility is very limited even if there is movement. Therefore, the uplink transmission delay distribution of the MTC device in the system can be considered as Does not change very dynamically over time, so it can pass The first GP length is sent over relatively static signaling or semi-static signaling. For example, semi-static signaling may refer to system broadcast messages or higher layer signaling. This will introduce only a small amount of additional signaling overhead and save system resources.

Of course, in an actual application process, the base station may determine, according to the situation, whether to update the GP length configured for each MTC device within the coverage of the base station. If the update is required, the steps of the process of FIG. 2 may be repeatedly performed. After receiving the new GP length, the MTC device attaches the new GP length to the uplink data packet to be sent. Specifically, when the GP length is updated, it is determined by the base station, and is also related to factors such as a specific algorithm set in the base station, and the present invention is not limited.

Specifically, the MTC device attaches the first GP length to the uplink data packet, and may have three different attachment modes. Please refer to FIG. 3A, FIG. 3B, and FIG. 3C, respectively.

As shown in FIG. 3A, the MTC device attaches the first GP length to the front end of the uplink data packet, that is, the MTC device needs to send the uplink data packet after the time period indicated by the first GP length.

As shown in FIG. 3B, the MTC device attaches the first GP length to the back end of the uplink data packet, that is, the MTC device waits for the time period indicated by the first GP length after transmitting the uplink data packet. Then send the next upstream packet.

As shown in FIG. 3C, the MTC device divides the first GP length into two parts, and respectively attaches the two parts to the front end and the back end of the uplink data packet, that is, the MTC device is at the front end of the uplink data packet. The uplink data packet is sent after the time period indicated by the attached GP length, and then the next data packet is sent after waiting for the time period indicated by the GP length attached to the back end of the uplink data packet. In this case, the MTC device may evenly allocate the first GP length into two parts, that is, as shown in FIG. 3C, or may also be unevenly allocated, and may be determined according to actual conditions.

There are various attachment methods in the embodiments of the present invention, and the MTC device can be arbitrarily selected, and the method is flexible.

To illustrate the complete process of the first GP determining mode in the embodiment of the present invention, refer to FIG. 4, which is an interaction flowchart of the first GP determining mode in the embodiment of the present invention.

Step 1: The base station determines, according to the configuration information of all the MTC devices in the coverage of the base station, The first GP length is determined. The specific determination method is shown in the flow of Figure 2.

Step 2: The base station sends the first GP length to all MTC devices in the coverage of the base station.

Step 3: The MTC device receives the first GP length. The MTC device is any MTC device within the coverage of the associated base station.

Step 4: The MTC device attaches the first GP length to an uplink data packet.

Step 5: The MTC device sends the uplink data packet to the base station. The first GP length is attached to the uplink data packet.

Referring to FIG. 5, based on the same inventive concept, an embodiment of the present invention provides an uplink data packet sending method, which is described in the embodiment of FIG. 5, which is the second GP length determining manner in the foregoing embodiment of the present invention. As described above, in the second GP length determination mode, the base station and the MTC device use the same method to determine the GP length, and the embodiment of FIG. 5 describes the process in which the MTC device determines the GP length. The main flow of the method is described below.

Step 501: The MTC device determines the first GP length according to the configuration information of the MTC device.

For the MTC device, the configuration information of the MTC device may include: the length of the uplink symbol sent by the MTC device, and/or the number of symbols included in the uplink packet sent by the MTC device.

For the length of the uplink symbol sent by the MTC device, if the length of the uplink symbol sent by the MTC device is longer, the uplink data packet sent by the MTC device is more resistant to collision, and the MTC device is more resistant. The first GP can be made shorter in length, saving system resources.

The number of symbols included in the uplink data packet sent by the MTC device is similar to the consideration of the length of time for the MTC device to send the uplink symbol, that is, the more the number of symbols included in the uplink data packet sent by the MTC device, the MTC device The stronger the received uplink data packet is tolerant to the collision, the MTC device can make the first GP length shorter and save system resources.

Optionally, in the embodiment of the present invention, determining the first GP length according to the configuration information of the MTC device, including:

Determining, by the MTC device, the first GP length according to the configuration information of the MTC device, and according to a first correspondence between the configuration information of the pre-stored MTC device and the GP length degree.

That is, when determining the first GP length, the MTC device may consider the first correspondence relationship in addition to the configuration information of the MTC device.

Specifically, the MTC device may store only the correspondence between the configuration information of one MTC device and the GP length (or may also be referred to as a mapping relationship), and the MTC device may be directly applied, or the MTC. The device may store the corresponding relationship between the configuration information of the multiple MTC devices and the GP length, and the MTC device first selects a corresponding relationship from the MTC device. The corresponding relationship selected in the embodiment of the present invention is referred to as the first Correspondence), then apply it later.

Optionally, in the embodiment of the present invention, the first GP length is determined by the MTC device according to the configuration information of the MTC device, and according to a first correspondence between the pre-stored configuration information of the MTC device and the GP length. Previously, it also included:

Specifically, the base station performs the same processing procedure as the MTC device, and therefore, the base station stores the same correspondence relationship with the MTC device. The base station may determine, according to the distribution of all the MTC devices in the coverage of the base station, which correspondence relationship should be used by each MTC device, and indicate the determined result to the corresponding MTC device. Then, after receiving the indication of the base station, an MTC device may select a corresponding relationship from the stored multiple correspondences, for example, refer to the selected correspondence as the first correspondence. In this way, when determining the first GP length, the MTC device can consider not only the configuration information of the MTC device itself but also the configuration information of all MTC devices within the coverage of the base station (ie, the physicality of the MTC device). The distribution case can make the determined first GP length more accurate, and save system resources as much as possible without collision.

Optionally, in the embodiment of the present invention, the correspondence between the configuration information of the MTC device and the GP length may be a correspondence between the length of time that the MTC device sends the uplink symbol and the GP length, or may refer to the MTC device. The number of symbols included in the transmitted upstream packet and the length of the GP The correspondence between the two may also be the correspondence between the length of time that the MTC device transmits the uplink symbol, the number of symbols included in the uplink packet sent by the MTC device, and the GP length.

Specifically, if the mapping between the configuration information of the MTC device and the GP length refers to the length of time that the MTC device sends the uplink symbol, the number of symbols included in the uplink data packet sent by the MTC device, and the GP length. Corresponding relationship, a possible correspondence is shown in Table 1:

Table 1

In the embodiment of the present invention, when configuring the GP length, the MTC device can configure the GP length according to the actual situation, and the GP lengths configured by different MTC devices may also be different, which can implement dynamic and flexible configuration, so that the MTC device can be used effectively. GP resources, thereby reducing the performance loss caused by adding GP. It should be particularly emphasized that Table 1 is only one possible example, and other possible correspondences are not limited in the embodiment of the present invention.

Optionally, in the embodiment of the present invention, before the determining, by the MTC device, the first GP length according to the configuration information of the MTC device, the method further includes:

Determining, by the MTC device, the first GP length according to the configuration information of the MTC device, including: if the second indication message is used to instruct the MTC device to enable a function of determining a GP length, The MTC device determines the first GP length according to the configuration information of the MTC device.

That is, one signaling (ie, the second indication message) can be introduced to control the opening of the function of the MTC device to configure the GP length. That is, if the base station sends the second indication message to the MTC device, and the second indication message is used to instruct the MTC device to enable the function of determining the GP length, the MTC device may adopt the method described in the flow of FIG. To configure the GP length for itself, and if the base station does not send the second indication message to the MTC device, or the base station sends the second indication message to the MTC device, but the second indication message is used. In order to instruct the MTC device to turn off the function of determining the GP length, the MTC device does not use the method described in the flow of FIG. 5 to configure the GP length, and when transmitting the uplink data packet, the system default or predefined GP length may be adopted. In this way, you can choose whether the MTC device needs to enable this function. If it is not enabled, the processing complexity of the MTC device can be reduced.

Step 502: The MTC device sends an uplink data packet carrying the first GP length to the base station, to notify the base station that the MTC device does not send any uplink data packet within a time period indicated by the first GP length.

After determining the first GP length, when the MTC device needs to send an uplink data packet to the base station, the first GP length may be attached to the uplink data packet to be sent and sent, that is, Carrying the first GP length in the uplink data packet to be sent, and sending the same GP length, and the MTC device does not send any uplink data packet in the time period corresponding to the first GP length, thereby Collisions between upstream packets sent by different MTC devices are avoided.

Specifically, the MTC device attaches the first GP length to the uplink data packet, and may have three different adding manners, which are described in FIG. 3A, FIG. 3B, and FIG. 3C, and are not described herein.

Referring to FIG. 6, an embodiment of the present invention provides another GP length determining method based on the same inventive concept. The two GP length determination modes in the embodiment of the present invention have been introduced. In the second GP length determination mode, the base station and the MTC device use the same method to determine the GP length, which is described in the embodiment of FIG. 5. The process in which the MTC device determines the GP length, and the embodiment of FIG. 6 describes the process in which the base station determines the GP length in the same manner as the MTC device. The main flow of the method is described below.

Step 601: The base station acquires configuration information of the MTC device.

Step 602: The base station determines a first GP length according to the configuration information of the MTC device, where the first GP length is a time period for indicating that the MTC device does not send any uplink data packet.

The base station coverage includes multiple MTC devices, and the embodiment of FIG. 6 is only a process for determining the GP length of the base station for any one of the MTC devices, and for all MTC devices within the coverage of the base station, The processing of the base station is similar.

Since the base station and the MTC device both determine the GP length and the determined GP lengths are the same, the base station does not need to transmit to the MTC device after determining the GP length.

Optionally, in the embodiment of the present invention, the configuration information includes a length of time that the MTC device sends an uplink symbol, and/or a number of symbols included in an uplink data packet sent by the MTC device.

Optionally, in the embodiment of the present invention, the determining, by the base station, the first GP length, according to the configuration information of the MTC device, includes:

Optionally, in the embodiment of the present invention, the first GP is determined by the base station according to the configuration information of the MTC device, and according to a first correspondence between the pre-stored configuration information of the MTC device and the GP length. Before the length, it also includes:

The base station indicates the first correspondence to the MTC device.

The number and content of the correspondence between the base station and the MTC device are the same. For an MTC device, if there are multiple correspondences, the base station may first select one of the multiple correspondences according to the distribution of all the MTC devices in the coverage of the base station, for example, the selected correspondence relationship is called For the first correspondence, the base station indicates the first correspondence to the MTC device, for example, may send a first indication message to the MTC device, The first indication message is used to instruct the MTC device to select the first correspondence from multiple correspondences. Therefore, the base station and the MTC device determine the GP length according to the same correspondence, and ensure that the base station and the MTC device determine the same GP length.

Optionally, in the embodiment of the present invention, the method further includes:

It has been described in the flow of FIG. 5 that a signaling (ie, the second indication message) can be introduced to control the opening of the function of configuring the GP length of the MTC device. If the base station sends the second indication message to the MTC device, and the second indication message is used to instruct the MTC device to enable the function of determining the GP length, the MTC device may use the method described in the process of FIG. The GP length is configured by itself, and the base station can determine the GP length of the MTC device in the same manner (ie, the method described in the flowchart of FIG. 6). Otherwise, if the base station does not send the second indication message to the MTC device, or the base station sends the second indication message to the MTC device, but the second indication message is used to indicate that the MTC device is closed to determine the GP length. The function of the MTC device does not use the method described in the flow of FIG. 5 to configure the GP length, and the base station does not use the method described in the flow of FIG. 6 to configure the GP length.

Preferably, the step may be implemented before step 601, or may be implemented in synchronization with step 601 to ensure that the base station and the MTC device can determine the GP length synchronously. Of course, this step can also be implemented at other times, as long as the MTC device does not affect the sending of the uplink data packet, and the present invention is not limited.

As for other specific implementation details of the flow of FIG. 6, any embodiment not shown in the flow of FIG. 6 is the same as the embodiment described in the flow of FIG. 5, except that the execution subject is a base station. Because it has been described in detail in the flow of Figure 5, there is not much detail in the flow of Figure 6.

In summary, the flow of FIG. 5 and the flow of FIG. 6 constitute a second GP length determination mode in the embodiment of the present invention. That is, in the second GP length determining mode in the embodiment of the present invention, the MTC device and the base station determine the GP length in the same manner. After the base station determines the GP length, the base station does not need to notify the MTC device, because the MTC device also The same method will be used to determine the GP length, and it is because The same method is used, so the GP length determined by the MTC device is the same as that of the base station. After the MTC device determines the GP length, the determined GP length is attached to the uplink data packet, and since the base station has also determined the same GP length, the base station knows the GP attached to the MTC device when transmitting the uplink data packet. length.

Referring to FIG. 7 , based on the same inventive concept, an embodiment of the present invention provides a base station, where the base station may include a determining module 701 and a sending module 702.

a determining module 701, configured to determine, according to configuration information of all MTC devices in the coverage of the base station, a first GP length;

The indicating module 701 is configured to send the first GP length to all the MTC devices in the coverage of the base station, where the first GP length is used to indicate that the MTC device that receives the first GP length does not The time period during which any upstream packets are sent.

Optionally, in the embodiment of the present invention, the first GP length is sent to all the MTC devices in the coverage of the base station; wherein the first GP length is used to not send any uplink data in the indicated time period. package

Optionally, in the embodiment of the present invention, the sending module 702 is specifically configured to:

Referring to FIG. 8 , based on the same inventive concept, an embodiment of the present invention provides an MTC device, where the MTC device may include a determining module 801 and a sending module 802.

a determining module 801, configured to determine, according to configuration information of the MTC device, a first GP length;

The sending module 802 is configured to send, to the base station, an uplink data packet carrying the first GP length, to notify the base station that the MTC device does not send any uplink data packet within a time period indicated by the first GP length.

Optionally, in the embodiment of the present invention, the configuration information includes a length of time for the MTC device to send an uplink symbol, and/or a number of symbols included by the uplink data packet sent by the MTC device.

Optionally, in the embodiment of the present invention, the determining module 801 is specifically configured to:

According to the configuration information of the MTC device, and according to the configuration of the pre-stored MTC device The first correspondence between the information and the GP length determines the first GP length.

Optionally, in the embodiment of the present invention, the MTC device further includes a receiving module, configured to:

Receiving, by the determining module 801, according to the configuration information of the MTC device, and according to the first correspondence between the pre-stored configuration information of the MTC device and the GP length, before determining the first GP length, receiving the An indication message, the first indication message is used to instruct the MTC device to select the first correspondence from a correspondence between configuration information of a plurality of MTC devices and a GP length stored in advance to determine the first GP length.

Receiving, by the determining module 801, the second indication message sent by the base station before determining the first GP length according to the configuration information of the MTC device;

The determining module 801 is specifically configured to: if the second indication message is used to instruct the MTC device to enable the function of determining the GP length, determine the first GP length according to the configuration information of the MTC device.

Referring to FIG. 9 , based on the same inventive concept, an embodiment of the present invention provides a base station, where the base station may include an obtaining module 901 and a determining module 902.

The obtaining module 901 is configured to acquire configuration information of the MTC device.

The determining module 902 is configured to determine a first GP length according to the configuration information of the MTC device, where the first GP length is a time period for indicating that the MTC device does not send any uplink data packet.

Optionally, in the embodiment of the present invention, the determining module 902 is specifically configured to:

Optionally, in the embodiment of the present invention, the base station further includes a selection module and an indication module;

The selecting module is configured to: in the determining module 902, according to the configuration information of the MTC device, and according to a first correspondence between the pre-stored configuration information of the MTC device and the GP length, Before the first GP length is determined, according to the distribution of all the MTC devices in the coverage of the base station, the first correspondence is selected from the correspondence between the configuration information of the pre-stored MTC device and the GP length. Determining the first GP length;

Optionally, in the embodiment of the present invention, the base station further includes a sending module, configured to:

Referring to FIG. 10, based on the same inventive concept, an embodiment of the present invention provides a base station including a memory 1001, a processor 1002, and a transmitter 1003 connected to a bus 1000.

The memory 1001 is configured to store an instruction required by the processor 1002 to perform a task;

The processor 1002 is configured to execute an instruction stored by the memory 1001, and determine a first GP length according to configuration information of all MTC devices in the coverage of the base station;

The transmitter 1003 is configured to send the first GP length to all the MTC devices in the coverage of the base station, where the first GP length is used to indicate that the MTC device that receives the first GP length does not The time period during which any upstream packets are sent.

Optionally, in the embodiment of the present invention, the configuration information includes a distribution of all the MTC devices in the coverage of the base station, a length of time for the MTC device to send the uplink symbol, and a symbol included in the uplink data packet sent by the MTC device. At least one of the numbers.

Optionally, in the embodiment of the present invention, the transmitter 1003 is specifically configured to:

Referring to FIG. 11 , based on the same inventive concept, an embodiment of the present invention provides an MTC device, where the MTC device includes a memory 1101, a processor 1102, and a transmitter 1103 connected to a bus 1100.

The memory 1101 is configured to store an instruction required by the processor 1102 to perform a task;

The processor 1102 is configured to execute an instruction stored by the memory 1101, and determine a first GP length according to the configuration information of the MTC device;

The transmitter 1103 is configured to: when sending, to the base station, an uplink data packet carrying the first GP length, And notifying the base station that the MTC device does not send any uplink data packet within a time period indicated by the first GP length.

Optionally, in the embodiment of the present invention, the processor 1102 is specifically configured to:

Optionally, in the embodiment of the present invention, the MTC device further includes a receiver connected to the bus 1100;

The receiver is configured to: before the processor 1102 determines the first GP length according to the configuration information of the MTC device, and according to the first correspondence between the configuration information of the pre-stored MTC device and the GP length, the receiving station a first indication message sent by the base station, where the first indication message is used to instruct the MTC device to select the first correspondence from a correspondence between configuration information of a plurality of MTC devices and a GP length stored in advance. The first GP length is determined.

Optionally, in the embodiment of the present invention, the receiver is configured to:

Receiving, by the processor 1102, the second indication message sent by the base station before determining the first GP length according to the configuration information of the MTC device;

The processor 1102 is specifically configured to: execute the instruction stored in the memory 1101, and if the second indication message is used to instruct the MTC device to enable the function of determining the GP length, determine the first GP according to the configuration information of the MTC device. length.

Referring to FIG. 12, an embodiment of the present invention provides a base station according to the same inventive concept. The base station includes a memory 1201 and a processor 1202 that are coupled to bus 1200.

The memory 1201 is configured to store an instruction required by the processor 1202 to perform a task;

The processor 1202 is configured to execute the instruction stored in the memory 1201, obtain configuration information of the MTC device, and determine a first GP length according to the configuration information of the MTC device, where the first GP length is used to indicate the MTC The period of time during which the device does not send any upstream packets.

Optionally, in the embodiment of the present invention, the processor 1202 is configured to determine, according to configuration information of the MTC device, a first GP length, specifically:

Optionally, in the embodiment of the present invention, the base station further includes a transmitter connected to the bus 1200;

The processor 1202 is further configured to: execute the instruction, determine the first GP length according to the first correspondence between the configuration information of the MTC device and the pre-stored configuration information of the MTC device and the GP length. The first correspondence relationship is determined by determining the first correspondence relationship from the correspondence between the configuration information of the pre-stored MTC device and the GP length according to the distribution of all the MTC devices in the coverage of the base station. ;

Optionally, in the embodiment of the present invention, the transmitter is configured to:

It will be clearly understood by those skilled in the art that for the convenience and brevity of the description, only the division of each functional module described above is exemplified. In practical applications, the above function assignment can be completed by different functional modules as needed. The internal structure of the device is divided into different functional modules to perform all or part of the functions described above. The specifics of the systems, devices and units described above For the working process, refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be used. Combinations can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application, in essence or the contribution to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server, or base station, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

The above embodiments are only used to describe the technical solutions of the present application in detail, but the descriptions of the above embodiments are only used to help understand the method and core ideas of the present invention, and should not be understood. To limit the invention. Those skilled in the art will be able to devise variations or alternatives within the scope of the present invention within the scope of the present invention.

Claims

A method for determining a guard time GP length, comprising:

Determining, by the base station, the first GP length according to configuration information of all the machine type communication MTC devices in the coverage of the base station;

Transmitting, by the base station, the first GP length to all MTC devices in the coverage of the base station, where the first GP length is used to indicate that the MTC device receiving the first GP length does not send any uplink The time period of the packet.
The method according to claim 1, wherein the configuration information includes a distribution of all MTC devices within the coverage of the base station, a length of time for the MTC device to transmit uplink symbols, and an uplink data packet sent by the MTC device. At least one of the number of symbols included.
The method according to claim 1 or 2, wherein the base station sends the first GP length to all MTC devices in the coverage of the base station, including:

The base station sends the first GP length to all MTC devices in the coverage of the base station by static signaling or semi-static signaling.
An uplink data packet sending method, comprising:

The machine type communication MTC device determines the first protection time GP length according to the configuration information of the MTC device;

The MTC device sends an uplink data packet carrying the first GP length to the base station to notify the base station that the MTC device does not send any uplink data packet within a time period indicated by the first GP length.
The method according to claim 4, wherein the configuration information comprises a length of time during which the MTC device sends an uplink symbol, and/or a number of symbols included in an uplink data packet sent by the MTC device.
The method according to claim 4 or 5, wherein the MTC device determines the first GP length according to the configuration information of the MTC device, including:

The MTC device is configured according to the configuration information of the MTC device, and according to pre-stored The first correspondence between the configuration information of the MTC device and the GP length determines the first GP length.
The method according to claim 6, wherein the MTC device determines the location according to the configuration information of the MTC device and according to a first correspondence between the configuration information of the pre-stored MTC device and the GP length. Before the first GP length, it also includes:

The MTC device receives a first indication message sent by the base station, where the first indication message is used to instruct the MTC device to select a correspondence between configuration information of a plurality of MTC devices stored in advance and a GP length. Determining the first correspondence to determine the first GP length.
A method according to any one of claims 4-7, wherein

Before determining, by the MTC device, the first GP length, according to the configuration information of the MTC device, the method further includes:

Receiving, by the MTC device, a second indication message sent by the base station;

Determining, by the MTC device, the first GP length according to the configuration information of the MTC device, if the second indication message is used to instruct the MTC device to enable a function of determining a GP length, the MTC device according to the MTC device The configuration information determines the first GP length.
A method for determining a guard time GP length, comprising:

The base station acquires configuration information of the MTC device;

The base station determines a first GP length according to the configuration information of the MTC device, where the first GP length is a time period for indicating that the MTC device does not send any uplink data packet.
The method according to claim 9, wherein the configuration information comprises a length of time for the MTC device to send an uplink symbol, and/or a number of symbols included by the uplink data packet sent by the MTC device.
The method according to claim 9 or 10, wherein the base station determines the first GP length according to the configuration information of the MTC device, including:

The base station determines the first GP length according to the configuration information of the MTC device and according to a first correspondence between the configuration information of the pre-stored MTC device and the GP length.
The method of claim 11 wherein said base station is in accordance with said MTC The configuration information of the device, and the first correspondence between the configuration information of the pre-stored MTC device and the GP length, before determining the first GP length, further includes:

Determining, by the base station, the first correspondence from the correspondence between the configuration information of the pre-stored MTC device and the GP length according to the distribution of all the MTC devices in the coverage of the base station to determine the first GP. length;

The base station indicates the first correspondence to the MTC device.
The method of any of claims 9-12, wherein the method further comprises:

The base station sends a second indication message to the MTC device, where the second indication message is used to instruct the MTC device to enable a function of determining a GP length.
A base station, comprising:

a determining module, configured to determine, according to configuration information of all machine type communication MTC devices in the coverage of the base station, a first protection time GP length;

a sending module, configured to send the first GP length to all MTC devices in the coverage of the base station, where the first GP length is used to indicate that the MTC device that receives the first GP length does not send The time period of any upstream packet.
The base station according to claim 14, wherein the configuration information includes a distribution of all MTC devices within the coverage of the base station, a length of time for the MTC device to send uplink symbols, and an uplink data packet sent by the MTC device. At least one of the number of symbols included.
The base station according to claim 14 or 15, wherein the sending module is specifically configured to:

The first GP length is sent to all MTC devices within the coverage of the base station by static signaling or semi-static signaling.
A machine type communication MTC device, comprising:

a determining module, configured to determine a first guard time GP length according to the configuration information of the MTC device;

a sending module, configured to send, to the base station, an uplink data packet carrying the first GP length, to notify the base station that the MTC device does not send any uplink within a time period indicated by the first GP length data pack.
The MTC device according to claim 17, wherein the configuration information includes a length of time during which the MTC device sends an uplink symbol, and/or a number of symbols included in an uplink data packet sent by the MTC device.
The MTC device according to claim 17 or 18, wherein the determining module is specifically configured to:

Determining the first GP length according to the configuration information of the MTC device and according to a first correspondence between the configuration information of the pre-stored MTC device and the GP length.
The MTC device of claim 19, wherein the MTC device further comprises a receiving module, configured to:

Receiving, by the determining module, according to the configuration information of the MTC device, and according to the first correspondence between the configuration information of the pre-stored MTC device and the GP length, before determining the first GP length, receiving the sending by the base station a first indication message, the first indication message is used to instruct the MTC device to select the first correspondence from a correspondence between configuration information of a plurality of MTC devices and a GP length stored in advance to determine the first A GP length.
The MTC device according to any one of claims 17 to 20, wherein the MTC device further comprises a receiving module, configured to:

Receiving, by the determining module, the second indication message sent by the base station before determining the first GP length according to the configuration information of the MTC device;

The determining module is specifically configured to determine the first GP length according to the configuration information of the MTC device, if the second indication message is used to instruct the MTC device to enable the function of determining the GP length.
A base station, comprising:

Obtaining a module, configured to acquire configuration information of the MTC device;

And a determining module, configured to determine a first protection time GP length according to the configuration information of the MTC device, where the first GP length is a time period for indicating that the MTC device does not send any uplink data packet.
The base station according to claim 22, wherein the configuration information includes a length of time during which the MTC device sends an uplink symbol, and/or a number of symbols included in an uplink data packet sent by the MTC device.
The base station according to claim 22 or 23, wherein the determining module is specifically configured to:

Determining the first GP length according to the configuration information of the MTC device and according to a first correspondence between the configuration information of the pre-stored MTC device and the GP length.
The base station according to claim 24, wherein the base station further comprises a selection module and an indication module;

The selecting module is configured to: before the determining, the determining, by the determining module, according to the configuration information of the MTC device, and according to the first correspondence between the pre-stored configuration information of the MTC device and the GP length, determining the first GP length Determining, according to the distribution of all the MTC devices in the coverage of the base station, the first correspondence relationship from the correspondence between the configuration information of the pre-stored MTC device and the GP length to determine the first GP length;

The indication module is configured to: indicate the first correspondence to the MTC device.
The base station according to any one of claims 22-25, wherein the base station further comprises a sending module, configured to:

Sending a second indication message to the MTC device, where the second indication message is used to instruct the MTC device to enable a function of determining a GP length.
A base station, comprising: a memory, a processor and a transmitter connected to the same bus;

The memory is configured to store an instruction;

The processor is configured to execute the instruction, and determine a first protection time GP length according to configuration information of all machine type communication MTC devices in the coverage of the base station;

The transmitter is configured to send the first GP length to all MTC devices in the coverage of the base station, where the first GP length is an MTC device used to indicate that the first GP length is received The time period during which no upstream packets are sent.
The base station according to claim 27, wherein the configuration information includes a distribution of all MTC devices within the coverage of the base station, a length of time for the MTC device to send uplink symbols, and an uplink data packet sent by the MTC device. At least one of the number of symbols included.
The base station according to claim 27 or 28, wherein the transmitter is specifically configured to:

The first GP length is sent to all MTC devices within the coverage of the base station by static signaling or semi-static signaling.
A machine type communication MTC device, characterized by comprising a memory, a processor and a transmitter connected to the same bus;

The memory is configured to store an instruction;

The processor is configured to execute the instruction, and determine a first guard time GP length according to configuration information of the MTC device;

The transmitter is configured to: when the uplink data packet carrying the first GP length is sent to the base station, notify the base station that the MTC device does not send any uplink data packet within a time period indicated by the first GP length. .
The MTC device according to claim 30, wherein the configuration information includes a length of time during which the MTC device sends an uplink symbol, and/or a number of symbols included in an uplink data packet sent by the MTC device.
The MTC device according to claim 30 or 31, wherein the processor is specifically configured to:

Executing the instruction, determining the first GP length according to the configuration information of the MTC device, and according to a first correspondence between the pre-stored configuration information of the MTC device and the GP length.
The MTC device of claim 32, wherein the MTC device further comprises a receiver connected to the bus;

The receiver is configured to: determine, according to configuration information of the MTC device, according to a first correspondence between configuration information of a pre-stored MTC device and a GP length, Before the first GP length, the first indication message sent by the base station is received; the first indication message is used to indicate a correspondence between the configuration information of the MTC device and the GP length of the plurality of MTC devices stored in advance. The first correspondence is selected to determine the first GP length.
An MTC device according to any of claims 30-33, wherein said MTC device further comprises a receiver connected to said bus;

The receiver is configured to: before the determining, by the processor, the first GP length, according to the configuration information of the MTC device, receiving a second indication message sent by the base station;

The processor is specifically configured to: execute the instruction, if the second indication message is used to instruct the MTC device to enable the function of determining the GP length, determine the first GP length according to the configuration information of the MTC device.
A base station, comprising: a memory and a processor connected to the same bus;

The memory is configured to store an instruction;

The processor is configured to execute the instruction, obtain configuration information of the MTC device, and determine a first GP length according to the configuration information of the MTC device, where the first GP length is used to indicate the MTC device The time period during which no upstream packets are sent.
The base station according to claim 35, wherein the configuration information includes a length of time during which the MTC device transmits an uplink symbol, and/or a number of symbols included in an uplink data packet sent by the MTC device.
The base station according to claim 35 or claim 36, wherein the processor is configured to determine a first GP length according to configuration information of the MTC device, specifically:

Determining the first GP length according to the configuration information of the MTC device and according to a first correspondence between the configuration information of the pre-stored MTC device and the GP length.
The base station according to claim 37, wherein said base station further comprises a transmitter connected to said bus;

The processor is further configured to: execute the instruction, determine the first GP according to the first correspondence between the configuration information of the MTC device and the pre-stored configuration information of the MTC device and the GP length. Before the length, according to the points of all MTC devices within the coverage of the base station In the case of the cloth, the first correspondence is determined from the correspondence between the configuration information of the pre-stored MTC device and the GP length to determine the first GP length;

The transmitter is configured to: indicate the first correspondence to the MTC device.
A base station according to any of claims 35-38, wherein said base station further comprises a transmitter coupled to said bus;

The transmitter is configured to send a second indication message to the MTC device, where the second indication message is used to instruct the MTC device to enable a function of determining a GP length.