CN109076617B

CN109076617B - Random access method, device and storage medium of MTC (machine type communication) system

Info

Publication number: CN109076617B
Application number: CN201880001133.7A
Authority: CN
Inventors: 牟勤
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2018-07-25
Filing date: 2018-07-25
Publication date: 2022-08-19
Anticipated expiration: 2038-07-25
Also published as: CN109076617A; WO2020019211A1

Abstract

The disclosure relates to a random access method, a device and a storage medium of an MTC system, wherein the method comprises the following steps: a base station sends a system broadcast message, wherein the broadcast message is used for indicating the random access resources of a first capability user and a second capability user; the base station determines whether the user type of the user equipment is a first capacity user or a second capacity user according to the random access channel resource when the user equipment sends the random access preamble; a base station sends a physical downlink channel message containing a random access response and reconfiguration information to user equipment; and the base station sends the physical downlink channel message containing the competition resolving message to the user equipment by using the reconfigured physical downlink channel resource indicated by the reconfiguration information, wherein the reconfigured physical downlink channel resource is determined according to the user type. The present disclosure provides a mechanism for sending different types of physical downlink channel messages for different user capabilities in a random access process, which can improve backward compatibility of an independently deployed MTC system.

Description

Random access method, device and storage medium of MTC (machine type communication) system

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a random access method and apparatus for an MTC system, and a storage medium.

Background

Machine Type Communication (MTC) refers to Communication between machines without human interference, and is widely used in various fields such as smart cities (e.g., meter reading), smart agriculture (e.g., collection of information such as temperature and humidity), smart transportation (e.g., sharing a single vehicle/sharing a vehicle), and the like. At present, a basic MTC communication framework is formed in a Long Term Evolution (LTE) system (mainly release 12-release 13), and the characteristics of low complexity, low manufacturing cost, coverage enhancement, power saving and the like can be supported. The conventional MTC system is deployed in a frequency band of the LTE system (may be simply referred to as an in-band MTC system), and shares frequency resources and partial channels with users of the conventional LTE system. Since the in-band MTC system is deployed in the LTE frequency band, the coexistence with the existing channel of LTE needs to be considered in the resource mapping. When resource mapping is performed on MTC Downlink channels, such as MTC Physical Downlink Control Channel (MPDCCH) and MTC Physical Downlink Shared Channel (MPDSCH), the mapping is performed on Physical resources occupied by first 3 Orthogonal Frequency Division Multiplexing (OFDM) symbols of a subframe, which are not in the existing LTE Control Channel region.

However, considering that the MTC system needs to be deployed based on the LTE system in a non-flexible manner, the industry has started (at release16) to consider independent deployment of the MTC system, for example, allocating an independent spectrum and a dedicated channel/signal to the independently deployed MTC system. Since the independently deployed MTC is not dependent on the LTE system, the coexistence problem with other channels of the LTE system is not considered. Therefore, in the independent deployment mode, the MPDCCH and MPDSCH of the MTC system user of release16 (or the MTC system user of partial release16) may both support the use of the LTE control channel region. There are still user equipments that do not support the use of the LTE control channel region, such as the previous release version of user equipments.

Since the user equipment of the previous release version does not support the transmission of the MPDCCH and the MPDSCH occupying the LTE control channel region, in order to ensure that such users can work in the independently deployed MTC system, the base station preferably identifies when such users have just made random access, so as to provide the transmission of the MPDCCH and the MPDSCH of corresponding types. But current systems do not meet this requirement.

Disclosure of Invention

In order to overcome the problems in the related art, the present disclosure provides a random access method, apparatus, and storage medium for an MTC system.

According to a first aspect of the embodiments of the present disclosure, there is provided a random access method for an MTC system, which is applied to a base station, the method including:

sending a system broadcast message, wherein the broadcast message is used for indicating random access resources of a first capability user and a second capability user, the first capability user does not support the physical downlink channel transmission by using the LTE control channel area of the subframe, and the second capability user supports the physical downlink channel transmission by using the LTE control channel area of the subframe;

when receiving a random access preamble sent by user equipment, determining a user type of the user equipment according to a random access channel resource utilized when the user equipment sends the random access preamble, wherein the user type comprises the first capability user or the second capability user;

sending a physical downlink channel message containing a random access response and reconfiguration information of a physical downlink channel to the user equipment, wherein the reconfiguration information is used for indicating reconfigured physical downlink channel resources, and the reconfigured physical downlink channel resources are determined according to the user type;

and after receiving a scheduling transmission message sent by user equipment, sending a physical downlink channel message containing a contention resolution message to the user equipment by using the reconfigured physical downlink channel resource.

Optionally, the random access resource includes: a first random access channel resource set used for the first capability user to send the random access preamble, and a second random access channel resource set used for the second capability user to send the random access preamble, wherein when receiving the random access preamble sent by the user equipment, the user type of the user equipment is determined according to the random access channel resource utilized when the user equipment sends the random access preamble, including:

when the random access preamble is received, judging whether the random access channel resource utilized by the user equipment when the random access preamble is sent belongs to the first random access channel resource set or the second random access channel resource set;

determining that the user equipment is the first capability user when belonging to the first set of random access channel resources;

determining that the user equipment is the second capability user when belonging to the second set of random access channel resources.

Optionally, the first set of random access channel resources and the second set of random access channel resources each include: time resources, frequency resources and random access preamble resources;

the first set of random access channel resources is different from at least one resource in the second set of random access channel resources.

Optionally, the sending, to the user equipment, a physical downlink channel message including a random access response and reconfiguration information of a physical downlink channel, where the reconfiguration information is used to indicate a reconfigured physical downlink channel resource, and the reconfigured physical downlink channel resource is determined according to the user type, includes:

sending a first MTC (machine type communication) physical downlink control channel (MPDCCH) message to the user equipment, wherein the first MPDCCH message comprises first scheduling information of the random access response;

and sending a first MTC Physical Downlink Shared Channel (MPDSCH) message to the user equipment, wherein the first MPDSCH message comprises the random access response and reconfiguration information of the MPDCCH, the random access response comprises second scheduling information of the scheduling transmission message, the reconfiguration information is used for indicating reconfigured MPDCCH resources, and the reconfigured MPDCCH resources are determined according to the user type.

Optionally, the random access resource includes: a first MPDCCH set and a second MPDCCH set, where the first MPDCCH set is an MPDCCH resource set for scheduling the random access response for the first-capability user, and the second MPDCCH set is an MPDCCH resource set for scheduling the random access response for the second-capability user, where sending the first MPDCCH message to the user equipment includes:

when the user equipment is the first-capability user, the first MPDCCH message is sent to the user equipment by using MPDCCH resources in the first MPDCCH set, and the first MPDCCH message is a first-type MPDCCH message;

when the user equipment is the second-capability user, the first MPDCCH message is sent to the user equipment by using an MPDCCH resource in the second MPDCCH set, where the first MPDCCH message is a second-type MPDCCH message;

the first type of MPDCCH message is an MPDCCH message in an LTE control channel region which does not occupy a subframe, and the second type of MPDCCH message is an MPDCCH message in an LTE control channel region which occupies a subframe.

Optionally, the sending, to the user equipment, a first MPDSCH message, where the first MPDSCH message includes the random access response and reconfiguration information of an MPDCCH, where the random access response includes second scheduling information of the scheduling transmission message, and the reconfiguration information is used to indicate a reconfigured MPDCCH resource, where the reconfigured MPDCCH resource is determined according to the user type, and the method includes:

when the user equipment is the first-capability user, performing resource reconfiguration on the MPDCCH to obtain a third MPDCCH set, wherein the third MPDCCH set is a resource set used for scheduling the MPDCCH of the contention resolution message and scheduling the MPDCCH of subsequent data transmission for the first-capability user;

sending the first MPDSCH message to the user equipment, where the first MPDSCH message is a first type of MPDSCH message, the first MPDSCH message includes the random access response and reconfiguration information of MPDCCH, and the random access response includes the second scheduling information, where the reconfiguration information is used to indicate that an MPDCCH resource after reconfiguration is the third MPDCCH set;

or,

when the user equipment is the second-capability user, performing resource reconfiguration on the MPDCCH to obtain a fourth MPDCCH set, wherein the fourth MPDCCH set is a resource set used for scheduling the MPDCCH of the contention resolution message and scheduling the MPDCCH for subsequent data transmission for the second-capability user;

sending the first MPDSCH message to the user equipment, where the first MPDSCH message is a second MPDSCH message, the first MPDSCH message includes the random access response and reconfiguration information of MPDCCH, and the random access response includes the second scheduling information, where the reconfiguration information is used to indicate that an MPDCCH resource after reconfiguration is the fourth MPDCCH set;

the first type of MPDSCH message is an MPDSCH message which does not occupy an LTE control channel region of a subframe, and the second type of MPDSCH message is an MPDSCH message which occupies the LTE control channel region of the subframe.

Optionally, the sending the first MPDCCH message to the user equipment includes:

when the user equipment is the first-capability user or the second-capability user, sending the first MPDCCH message to the user equipment, where the first MPDCCH message is a first-class MPDCCH message;

the first type of MPDCCH message is an MPDCCH message that does not occupy an LTE control channel region of a subframe, and the second type of MPDCCH message is an MPDCCH message that occupies an LTE control channel region of a subframe.

when the user equipment is the first-capability user, performing MPDCCH resource reconfiguration to obtain a fifth MPDCCH set, wherein the fifth MPDCCH set is a resource set of an MPDCCH used for scheduling the contention resolution message and an MPDCCH used for scheduling subsequent data transmission for the first-capability user;

when the user equipment is the second-capability user, performing resource reconfiguration on the MPDCCH to obtain a sixth MPDCCH set, where the sixth MPDCCH set is a resource set of an MPDCCH used for scheduling the contention resolution message and an MPDCCH used for scheduling subsequent data transmission for the second-capability user;

sending the first MPDSCH message to the user equipment, where the first MPDSCH message is a first type of MPDSCH message, the first MPDSCH message includes the random access response and reconfiguration information of MPDCCH, and the random access response includes the second scheduling information; when the user equipment is the first-capability user, the reconfiguration information is used for indicating the reconfigured MPDCCH resource to be the fifth MPDCCH set, and when the user equipment is the second-capability user, the reconfiguration information is used for indicating the reconfigured MPDCCH resource to be the sixth MPDCCH set;

Optionally, the first MPDCCH set occupies a first time resource and a first frequency resource, and the second MPDCCH set occupies a second time resource and a second frequency resource;

the first time resource and the second time resource are different, and the first frequency resource and the second frequency resource are different; or,

the first time resource and the second time resource are the same, and the first frequency resource and the second frequency resource are different; or,

the first time resource and the second time resource are different, and the first frequency resource and the second frequency resource are the same;

the resource mapping modes of the first MPDCCH set and the second MPDCCH set are the same or different, and the resource mapping modes comprise dispersive mapping or centralized mapping;

the first MPDCCH set and the second MPDCCH set have the same or different transmission modes, and the transmission modes include: transmit diversity or beamforming.

Optionally, after receiving a scheduling transmission message sent by a user equipment, sending a physical downlink channel message including a contention resolution message to the user equipment by using the reconfigured physical downlink channel resource, where the sending includes:

when the user equipment is a first-capability user, transmitting a second MPDCCH message to the user equipment by using MPDCCH resources in the third MPDCCH set or the fifth MPDCCH set, wherein the second MPDCCH message is the first-type MPDCCH message and comprises third scheduling information of a contention resolution message;

sending a second MPDSCH message to the user equipment, where the second MPDSCH message is the first kind of MPDSCH message, and the second MPDSCH message includes the contention resolution message;

or,

when the user equipment is a second-capability user, transmitting a second MPDCCH message to the user equipment by using an MPDCCH resource in the fourth MPDCCH set or a sixth MPDCCH set, where the second MPDCCH message is a second-type MPDCCH message and includes the third scheduling information for contention;

and sending a second MPDSCH message to the user equipment, where the second MPDSCH message is the second type of MPDSCH message, and the second MPDSCH message includes the contention resolution message.

According to a second aspect of the embodiments of the present disclosure, there is provided a random access method of an MTC system, which is applied to a user equipment, the method including:

acquiring random access resources of a first capability user and a second capability user by receiving a system broadcast message sent by a base station, wherein the first capability user does not support physical downlink channel transmission by using an LTE control channel region of a subframe, and the second capability user supports physical downlink channel transmission by using the LTE control channel region of the subframe;

sending a random access preamble to the base station by using a random access resource corresponding to a user type of the user equipment, wherein the user type comprises the first capability user or the second capability user;

receiving a physical downlink channel message which is sent by the base station and contains a random access response and reconfiguration information of a physical downlink channel, wherein the reconfiguration information is used for indicating reconfigured physical downlink channel resources, and the reconfigured physical downlink channel resources are determined according to the user type;

and after sending a scheduling transmission message to the base station, receiving a physical downlink channel message which is sent by the base station and contains a contention resolution message by using the reconfigured physical downlink channel resource.

Optionally, the random access resource includes: a first set of random access channel resources for the first capability user to send the random access preamble, and a second set of random access channel resources for the second capability user to send the random access preamble, wherein the sending of the random access preamble to the base station by using the random access resources corresponding to the user type of the user equipment comprises:

when the user equipment is the first capability user, sending the random access preamble to the base station by using the random access channel resource in the first random access channel resource set;

and when the user equipment is the second capability user, the random access channel resource in the second random access channel resource set is utilized to send the random access preamble to the base station.

Optionally, the receiving, from the base station, a physical downlink channel message including a random access response and reconfiguration information of a physical downlink channel, where the reconfiguration information is used to indicate a reconfigured physical downlink channel resource, and the reconfigured physical downlink channel resource is determined according to the user type, includes:

receiving a first MTC Physical Downlink Control Channel (MPDCCH) message sent by the base station, wherein the first MPDCCH message comprises first scheduling information of the random access response;

receiving a first MTC (machine type communication) physical downlink shared channel (MPDSCH) message sent by the base station according to the first scheduling information, wherein the first MPDSCH message comprises the random access response and reconfiguration information of the MPDCCH, the random access response comprises second scheduling information of the scheduling transmission message, the reconfiguration information is used for indicating reconfigured MPDCCH resources, and the reconfigured MPDCCH resources are determined according to the user type.

Optionally, the random access resource includes: the method includes the steps of receiving a first MPDCCH message sent by a base station, where the first MPDCCH set is an MPDCCH resource set used for scheduling the random access response for the first-capability user, and the second MPDCCH set is an MPDCCH resource set used for scheduling the random access response for the second-capability user, and the method includes:

when the user equipment is the first capability user, receiving the first MPDCCH message sent by the base station by using MPDCCH resources in the first MPDCCH set, wherein the first MPDCCH message is a first type of MPDCCH message;

when the user equipment is the second-capability user, receiving the first MPDCCH message sent by the base station by using an MPDCCH resource in the second MPDCCH set, where the first MPDCCH message is a second-type MPDCCH message;

Optionally, the receiving, according to the first scheduling information, a first MPDSCH message sent by the base station, where the first MPDSCH message includes the random access response and reconfiguration information of an MPDCCH, where the random access response includes second scheduling information of the scheduling transmission message, and the reconfiguration information is used to indicate a reconfigured MPDCCH resource, where the reconfigured MPDCCH resource is determined according to the user type, and the receiving includes:

when the user equipment is the first-capability user, receiving the first MPDSCH message sent by the base station according to the first scheduling information, where the first MPDSCH message is a first-class MPDSCH message, the first MPDSCH message includes the random access response and reconfiguration information of MPDCCH, the random access response includes the second scheduling information, the reconfiguration information is used to indicate that an MPDCCH resource after reconfiguration is a third MPDCCH set, and the third MPDCCH set is a resource set of MPDCCH used for scheduling the contention resolution message and MPDCCH for scheduling subsequent data transmission for the first-capability user;

when the user equipment is the second-capability user, receiving the first MPDSCH message sent by the base station according to the first scheduling information, where the first MPDSCH message is a second-type MPDSCH message, the first MPDSCH message includes the random access response and reconfiguration information of MPDCCH, the random access response includes the second scheduling information, the reconfiguration information is used to indicate that an MPDCCH resource after reconfiguration is a fourth MPDCCH set, and the fourth MPDCCH set is a resource set of MPDCCH used for scheduling the contention resolution message and MPDCCH for scheduling subsequent data transmission for the second-capability user;

Optionally, the receiving the first MPDCCH message sent by the base station includes:

when the user equipment is the first-capability user or the second-capability user, receiving the first MPDCCH message sent by the base station, where the first MPDCCH message is a first-class MPDCCH message;

Optionally, the receiving, according to the first scheduling information, a first MPDSCH message sent by the base station, where the first MPDSCH message includes the random access response and reconfiguration information of MPDCCH, the random access response includes second scheduling information of the scheduling transmission message, the reconfiguration information is used to indicate reconfigured MPDCCH resources, and the reconfigured MPDCCH resources are determined according to the user type, including:

receiving the first MPDSCH message sent by the base station, where the first MPDSCH message is a first type of MPDSCH message, the first MPDSCH message includes the random access response and reconfiguration information of MPDCCH, and the random access response includes the second scheduling information; when the user equipment is the first-capability user, the reconfiguration information is used for indicating that the reconfigured MPDCCH resource is a fifth MPDCCH set, when the user equipment is the second-capability user, the reconfiguration information is used for indicating that the reconfigured MPDCCH resource is a sixth MPDCCH set after reconfiguration, the fifth MPDCCH set is a resource set of an MPDCCH used for scheduling the contention resolution message and an MPDCCH used for scheduling subsequent data transmission for the first-capability user, and the sixth MPDCCH set is a resource set of an MPDCCH used for scheduling the contention resolution message and an MPDCCH used for scheduling subsequent data transmission for the second-capability user;

Optionally, after sending the scheduling transmission message to the base station, the reconfigured physical downlink channel resource is used to receive a physical downlink channel message that includes a contention resolution message and is sent by the base station.

Sending a scheduling transmission message to the base station according to the second scheduling information;

when the user equipment is a first-capability user, receiving a second MPDCCH message sent by the base station by using an MPDCCH resource in the third MPDCCH set or a fifth MPDCCH set, where the second MPDCCH message is the first-class MPDCCH message and includes third scheduling information of a contention resolution message;

receiving a second MPDSCH message sent by the base station according to the third scheduling information, where the second MPDSCH message is the first kind of MPDSCH message, and the second MPDSCH message includes the contention resolution message;

or,

when the user equipment is a second-capability user, receiving a second MPDCCH message sent by the base station by using an MPDCCH resource in the fourth MPDCCH set or the sixth MPDCCH set, where the second MPDCCH message is the second-type MPDCCH message and the third scheduling information in the second MPDCCH message;

and receiving a second MPDSCH message sent by the base station according to the third scheduling information, where the second MPDSCH message is the second kind of MPDSCH message and includes the contention resolution message.

According to a third aspect of the embodiments of the present disclosure, there is provided a random access apparatus of an MTC system, which is applied to a base station, the apparatus including:

a broadcast module configured to send a system broadcast message, where the broadcast message is used to indicate random access resources of a first capability user and a second capability user, the first capability user does not support physical downlink channel transmission using an LTE control channel region of a subframe, and the second capability user uses the LTE control channel region to perform physical downlink channel transmission;

a user identification module configured to, when receiving a random access preamble sent by a user equipment, determine a user type of the user equipment according to a random access channel resource utilized when the user equipment sends the random access preamble, where the user type includes the first capability user or the second capability user;

a sending module, configured to send a physical downlink channel message including a random access response and reconfiguration information of a physical downlink channel to the user equipment, where the reconfiguration information is used to indicate reconfigured physical downlink channel resources, and the reconfigured physical downlink channel resources are determined according to the user type;

the sending module is further configured to send, after receiving a scheduling transmission message sent by the user equipment, a physical downlink channel message including a contention resolution message to the user equipment by using the reconfigured physical downlink channel resource.

Optionally, the random access resource includes: a first set of random access channel resources for the first capable user to transmit the random access preamble and a second set of random access channel resources for the second capable user to transmit the random access preamble, the user identification module configured to:

Optionally, the sending module includes:

a first sending sub-module, configured to send a first MTC physical downlink control channel MPDCCH message to the user equipment, where the first MPDCCH message includes first scheduling information of the random access response;

the second sending submodule is configured to send a first MTC physical downlink shared channel MPDSCH message to the user equipment, where the first MPDSCH message includes the random access response and reconfiguration information of the MPDCCH, the random access response includes second scheduling information of the scheduling transmission message, and the reconfiguration information is used to indicate reconfigured MPDCCH resources, where the reconfigured MPDCCH resources are determined according to the user type.

Optionally, the random access resource includes: a first MPDCCH set and a second MPDCCH set, the first MPDCCH set being an MPDCCH resource set for scheduling the random access response for the first-capability user, the second MPDCCH set being an MPDCCH resource set for scheduling the random access response for the second-capability user, the first transmitting sub-module configured to:

Optionally, the second sending submodule is configured to:

when the user equipment is the first-capability user, performing MPDCCH resource reconfiguration to obtain a third MPDCCH set, wherein the third MPDCCH set is a resource set of an MPDCCH used for scheduling the contention resolution message and an MPDCCH used for scheduling subsequent data transmission for the first-capability user;

sending the first MPDSCH message to the user equipment, where the first MPDSCH message is a first-class MPDSCH message, the first MPDSCH message includes the random access response and reconfiguration information of MPDCCH, the random access response includes the second scheduling information, and the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is the third MPDCCH set;

or,

when the user equipment is the second-capability user, performing resource reconfiguration on the MPDCCH to obtain a fourth MPDCCH set, wherein the fourth MPDCCH set is a resource set of the MPDCCH used for scheduling the contention resolution message and the MPDCCH used for scheduling subsequent data transmission for the second-capability user;

Optionally, the first sending submodule is configured to:

when the user equipment is the first-capability user or the second-capability user, sending the first MPDCCH message to the user equipment, where the first MPDCCH message is the first-class MPDCCH message;

Optionally, the second sending submodule is configured to:

when the user equipment is the first capability user, performing MPDCCH resource reconfiguration to obtain a reconfigured first MPDCCH set, wherein the first MPDCCH set is an MPDCCH set used for sending a first type of MPDCCH message to the first capability user;

Optionally, the sending module includes:

a reconfiguration sub-module, configured to send, when the user equipment is a first-capability user, a second MPDCCH message to the user equipment by using an MPDCCH resource in the third MPDCCH set or the fifth MPDCCH set, where the second MPDCCH message is the first-class MPDCCH message and includes third scheduling information of a contention resolution message;

a third sending submodule, configured to send a second MPDSCH message to the user equipment, where the second MPDSCH message is the first kind of MPDSCH message, and the second MPDSCH message includes the contention resolution message;

or,

the reconfiguration sub-module is configured to, when the user equipment is a second-capability user, send a second MPDCCH message to the user equipment by using an MPDCCH resource in the fourth MPDCCH set or a sixth MPDCCH set, where the second MPDCCH message is a second-type MPDCCH message and includes the contention for the third scheduling information;

the third sending submodule is configured to send a second MPDSCH message to the user equipment, where the second MPDSCH message is the second type of MPDSCH message, and the second MPDSCH message includes the contention resolution message.

According to a fourth aspect of the embodiments of the present disclosure, there is provided a random access apparatus of an MTC system, which is applied to a user equipment, the apparatus including:

the system comprises an acquisition module, a processing module and a transmission module, wherein the acquisition module is configured to acquire random access resources of a first capability user and a second capability user by receiving a system broadcast message sent by a base station, the first capability user does not support the physical downlink channel transmission by using an LTE control channel region of a subframe, and the second capability user supports the physical downlink channel transmission by using the LTE control channel region of the subframe;

a sending module configured to send a random access preamble to the base station by using a random access resource corresponding to a user type of the user equipment, where the user type includes the first capability user or the second capability user;

a receiving module, configured to receive a physical downlink channel message that is sent by the base station and includes a random access response and reconfiguration information of a physical downlink channel, where the reconfiguration information is used to indicate a reconfigured physical downlink channel resource, and the reconfigured physical downlink channel resource is determined according to the user type;

the receiving module is further configured to receive, after sending the scheduling transmission message to the base station, a physical downlink channel message that includes a contention resolution message and is sent by the base station by using the reconfigured physical downlink channel resource.

Optionally, the random access resource includes: a first set of random access channel resources for the first capable user to transmit the random access preamble and a second set of random access channel resources for the second capable user to transmit the random access preamble, the transmitting module configured to:

and when the user equipment is the second capability user, sending the random access preamble to the base station by using the random access channel resource in the second random access channel resource set.

Optionally, the receiving module includes:

a first receiving submodule configured to receive a first MTC physical downlink control channel MPDCCH message sent by the base station, where the first MPDCCH message includes first scheduling information of the random access response;

a second receiving sub-module, configured to receive a first MTC physical downlink shared channel MPDSCH message sent by the base station according to the first scheduling information, where the first MPDSCH message includes the random access response and reconfiguration information of MPDCCH, and the random access response includes second scheduling information of the scheduling transmission message, where the reconfiguration information is used to indicate reconfigured MPDCCH resources, and the reconfigured MPDCCH resources are determined according to the user type.

Optionally, the random access resource includes: a first MPDCCH set and a second MPDCCH set, the first MPDCCH set being an MPDCCH resource set for scheduling the random access response for the first-capability user, the second MPDCCH set being an MPDCCH resource set for scheduling the random access response for the second-capability user, the first receiving sub-module being configured to:

when the user equipment is the first-capability user, receiving the first MPDCCH message sent by the base station by using an MPDCCH resource in the first MPDCCH set, where the first MPDCCH message is a first-class MPDCCH message;

Optionally, the second receiving submodule is configured to:

when the user equipment is the first capability user, receiving the first MPDSCH message sent by the base station according to the first scheduling information, where the first MPDSCH message is a first-class MPDSCH message, the first MPDSCH message includes the random access response and reconfiguration information of MPDCCH, the random access response includes the second scheduling information, the reconfiguration information is used to indicate that an MPDCCH resource after reconfiguration is a third MPDCCH set, and the third MPDCCH set is a resource set used for scheduling an MPDCCH of the contention resolution message and an MPDCCH resource set used for scheduling subsequent data transmission for the first capability user;

Optionally, the first receiving submodule is configured to:

when the user equipment is the first-capability user or the second-capability user, receiving the first MPDCCH message sent by the base station, where the first MPDCCH message is the first-type MPDCCH message;

Optionally, the second receiving submodule is configured to:

Optionally, the sending module is further configured to: sending a scheduling transmission message to the base station according to the second scheduling information;

the receiving module further comprises:

a third receiving sub-module, configured to receive, when the user equipment is a first-capability user, a second MPDCCH message sent by the base station using an MPDCCH resource in a third MPDCCH set or a fifth MPDCCH set, where the second MPDCCH message is the first-type MPDCCH message and the second MPDCCH message includes third scheduling information of a contention resolution message;

a fourth receiving submodule configured to receive a second MPDSCH message sent by the base station according to the third scheduling information, where the second MPDSCH message is the first kind of MPDSCH message, and the second MPDSCH message includes the contention resolution message;

or,

the third receiving sub-module is configured to receive, when the user equipment is a second-capability user, a second MPDCCH message sent by the base station by using an MPDCCH resource in the fourth MPDCCH set or the sixth MPDCCH set, where the second MPDCCH message is the second-type MPDCCH message and the third scheduling information in the second MPDCCH message;

the fourth receiving submodule is configured to receive a second MPDSCH message sent by the base station according to the third scheduling information, where the second MPDSCH message is the second-type MPDSCH message, and the second MPDSCH message includes the contention resolution message.

According to a fifth aspect of the embodiments of the present disclosure, there is provided a random access apparatus of an MTC system, including: a processor; a memory for storing processor-executable instructions;

wherein the processor is configured to: sending a system broadcast message, wherein the broadcast message is used for indicating random access resources of a first capability user and a second capability user, the first capability user does not support physical downlink channel transmission by using an LTE control channel region of a subframe, and the second capability user supports physical downlink channel transmission by using the LTE control channel region of the subframe;

According to a sixth aspect of embodiments of the present disclosure, there is provided a computer-readable storage medium having stored thereon computer program instructions, which when executed by a processor, implement the steps of the random access method of the MTC system provided by the first aspect of the present disclosure.

According to a seventh aspect of the embodiments of the present disclosure, there is provided a random access apparatus of an MTC system, which is applied to a user equipment, including: a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to: acquiring random access resources of a first capability user and a second capability user by receiving a system broadcast message sent by a base station, wherein the first capability user does not support physical downlink channel transmission by using an LTE control channel region of a subframe, and the second capability user supports physical downlink channel transmission by using the LTE control channel region of the subframe;

According to an eighth aspect of embodiments of the present disclosure, there is provided a computer-readable storage medium on which computer program instructions are stored, the computer program instructions, when executed by a processor, implement the steps of the random access method of the MTC system provided by the second aspect of the present disclosure.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

in the technical scheme provided by the embodiment of the disclosure, a base station sends a system broadcast message, wherein the broadcast message is used for indicating random access resources of a first capability user and a second capability user, the first capability user does not support physical downlink channel transmission by using an LTE control channel region of a subframe, and the second capability user supports physical downlink channel transmission by using the LTE control channel region of the subframe; when receiving a random access preamble sent by user equipment, a base station determines whether the user type of the user equipment is a first capacity user or a second capacity user according to a random access channel resource utilized when the user equipment sends the random access preamble; then the base station sends a physical downlink channel message containing random access response and reconfiguration information of a physical downlink channel to the user equipment, wherein the reconfiguration information is used for indicating the reconfigured physical downlink channel resource, and the reconfigured physical downlink channel resource is determined by the base station according to the user type; after receiving the scheduling transmission message sent by the user equipment, the base station sends a physical downlink channel message containing a contention resolution message to the user equipment by using the reconfigured physical downlink channel resource. In the present disclosure, different random access resources are configured for user equipments with different capabilities, and a mechanism for sending different types of physical downlink channel messages for different user capabilities in a random access process is provided, so that the mechanism can be applied to user equipments of a previous release version, and therefore backward compatibility of an independently deployed MTC system can be improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a flowchart illustrating a random access method of an MTC system according to an exemplary embodiment.

Fig. 2 is a flow chart of a user type determiner according to the embodiment shown in fig. 1.

Fig. 3 is a flowchart illustrating a random access method of another MTC system according to the embodiment shown in fig. 1.

Fig. 4 is a flowchart illustrating a random access method of an MTC system according to the embodiment shown in fig. 1.

Fig. 5 is a flowchart illustrating a random access method of still another MTC system according to an exemplary embodiment.

Fig. 6 is a flowchart of a method for transmitting a random access preamble according to the embodiment shown in fig. 5.

Fig. 7 is a flowchart illustrating a random access method of an MTC system according to the embodiment shown in fig. 5.

Fig. 8 is a flowchart illustrating a random access method of an MTC system according to the embodiment shown in fig. 1.

Fig. 9 is a block diagram illustrating a random access device of an MTC system according to an exemplary embodiment of the present disclosure.

Fig. 10 is a block diagram of a transmit module according to the embodiment shown in fig. 9.

Fig. 11 is a block diagram illustrating another transmit module according to the embodiment shown in fig. 9.

Fig. 12 is a block diagram illustrating a random access device of another MTC system according to an exemplary embodiment of the present disclosure.

Fig. 13 is a block diagram of a receiving module according to the embodiment shown in fig. 12.

Fig. 14 is a block diagram illustrating another transmit module according to the embodiment shown in fig. 12.

Fig. 15 is a block diagram illustrating a random access device of still another MTC system according to an exemplary embodiment.

Fig. 16 is a block diagram illustrating a random access method of still another MTC system according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the disclosure, as detailed in the appended claims.

Before introducing the random access method of the MTC system provided by the present disclosure, an application scenario related to various embodiments of the present disclosure is first introduced. The MTC system may be deployed independently. For the independently deployed MTC system, independent frequency spectrum, dedicated channel and signal are configured. First, a physical channel of the MTC system is described herein, and the physical channel of the MTC system may include: a Physical Downlink Control Channel (MTC Physical Downlink Control Channel, MPDCCH), an MTC Physical Downlink Shared Channel (MPDSCH), a Physical Uplink Control Channel (MTC Physical Uplink Control Channel, MPDCCH), and an MTC Physical Uplink Shared Channel (MPUSCH), where MPDCCH and MPDCCH are generally used for transmission of Control information and MPDSCH and MPUSCH are generally used for transmission of data information. In various embodiments of the present disclosure, transmission of physical downlink channels, i.e., MPDCCH and MPDSCH, is primarily concerned. On the other hand, for the independently deployed MTC system, it is supported that the LTE control channel region of a subframe is occupied when the MPDCCH and MPDSCH messages are transmitted. Since not all User Equipments (UEs) have the capability of utilizing the LTE control channel region of the subframe to perform physical downlink channel transmission, in various embodiments of the present disclosure, different resources may be allocated to UEs with different capabilities to send different types of physical downlink channel messages.

Generally, the random access may include non-contention random access and contention random access, and the random access procedure involved in the embodiments of the present disclosure may be contention random access, where the contention random access procedure generally has four steps, and transmits four pieces of signaling (i.e., Msg1-4) in the contention random access respectively, including:

first, the ue transmits a Random Access Preamble (Random Access Preamble) to a base station (e.g., eNodeB). In the Random Access process, the Random Access Preamble is called Msg1, the user equipment may randomly select a Preamble code to initiate Msg1, and the base station may select part or all of 64 Preamble codes for Random Access, where the Msg1 is carried on a Physical Random Access Channel (PRACH).

Secondly, the base station replies a Random Access Response (RAR) to the user equipment. After detecting that the user equipment sends Msg1, the base station sends a random access response to the user equipment to inform the user of the uplink resource information that can be used by the user equipment, and in the random access process, the random access response is called Msg 2. The Msg2 is organized by a Media Access Control (MAC) layer of the base station, the base station uses MPDCCH to schedule Msg2, and the MPDSCH carries Msg2, and can simultaneously respond to random Access requests of multiple user equipments, and the Msg2 includes an uplink transmission timing advance, scheduling information of the Msg3, a Temporary C-RNTI (Cell Radio Network Temporary Identifier), and the like.

Then, the ue sends a First scheduled UL transmission (First scheduled UL transmission), abbreviated to scheduled transmission, to the base station. Herein, the scheduling transmission message in the random access procedure is referred to as Msg 3. And after receiving the Msg2, the user equipment transmits the Msg3 according to the uplink resource indicated by the scheduling information in the Msg 2. Typically, the Msg3 contains different content for different scenarios, such as initial access, connection re-establishment, handover, upstream/downstream data arrival, etc.

Finally, after the contention succeeds, the base station sends a contention resolution message (Msg 4) to the ue, where the Msg4 is referred to as a contention resolution message during the random access procedure.

Based on the application scenario, the random access method of the MTC system provided in the present disclosure is introduced below.

Fig. 1 is a flowchart illustrating a random access method of an MTC system, which is used in a base station, according to an exemplary embodiment, and may include the following steps, as shown in fig. 1.

In step S11, a system broadcast message is sent, where the broadcast message is used to indicate the random access resources of the first capability user and the second capability user.

The first capacity user does not support the physical downlink channel transmission by using the LTE control channel region of the subframe, and the second capacity user supports the physical downlink channel transmission by using the LTE control channel region of the subframe.

In step S12, when receiving the random access preamble sent by the user equipment, determining a user type of the user equipment according to the random access channel resource used when the user equipment sends the random access preamble, where the user type includes the first capability user or the second capability user.

After the base station, for example, the eNB sends the system broadcast message, the user equipment receiving the system broadcast message may select the random access channel resource for sending the random access preamble, that is, the Msg1, according to whether the user equipment is the first-capability user or the second-capability user, so that the base station may detect the Msg1 sent by the user equipment after sending the system broadcast message, and when receiving the Msg1 sent by a certain user equipment, the base station may determine whether the user type of the user equipment is the first-capability user or the second-capability user according to the random access channel resource sent by the user equipment by the Msg 1.

In step S13, a physical downlink channel message including a random access response and reconfiguration information of a physical downlink channel is sent to the ue, where the reconfiguration information is used to indicate a reconfigured physical downlink channel resource, and the reconfigured physical downlink channel resource is determined according to the user type.

When the base station reconfigures the physical downlink channel resource, the base station may configure different physical downlink channel resources for the user type of the ue, which is the first-capability user or the second-capability user, so that the reconfigured physical downlink channel resource indicated in the reconfiguration information is determined according to the user type.

In step S14, after receiving the scheduling transmission message sent by the ue, the reconfigured physical downlink channel resource is used to send a physical downlink channel message including a contention resolution message to the ue.

In the above technical solution, different random access resources are configured for user equipments with different capabilities, and a mechanism for sending different types of physical downlink channel messages for different user capabilities in a random access process is provided, so that the mechanism can be applied to user equipments of a previous release version, and therefore backward compatibility of an independently deployed MTC system can be improved.

The random access resource may include: a first set of random access channel resources for the first capable user to send the random access preamble, and a second set of random access channel resources for the second capable user to send the random access preamble. Fig. 2 is a flowchart of a user type determining party according to the embodiment shown in fig. 1, and as shown in fig. 2, when receiving a random access preamble sent by a user equipment, the step S12 of determining the user type of the user equipment according to a random access channel resource utilized when the user equipment sends the random access preamble may include the following steps:

in step S121, when receiving the random access preamble, it is determined whether the random access channel resource utilized by the ue when sending the random access preamble belongs to the first random access channel resource set or the second random access channel resource set.

In step S122, when belonging to the first set of random access channel resources, the ue is determined to be the first capability user.

In step S123, when belonging to the second set of random access channel resources, the ue is determined to be the second capability user.

Further, different sets of random access channel resources can be defined from three dimensions of time, frequency and code word (i.e. Preamble code) for the random access channel resources. Thus, the first set of random access channel resources and the second set of random access channel resources may each comprise: time resources, frequency resources and random access preamble resources, and at least one of the first set of random access channel resources is different from the second set of random access channel resources. The following are exemplified:

the first set of random access channel resources comprises: a first time resource, a first frequency resource and a first set of random access preambles, the second set of random access channel resources comprising: a second time resource, a second frequency resource, and a second set of random access preambles. Then there can be the following three ways of dividing the random access channel resource:

the first mode is as follows: the first time resource and the second time resource are the same, the first frequency resource and the second frequency resource are the same, and the first random access preamble set and the second random access preamble set are different.

For example, the first random access channel Resource set is denoted as RACH Resource set #1, and the second random access channel Resource set is denoted as RACH Resource set #2, then the first manner may be as shown in table 1.

TABLE 1

Random access channel resources	Corresponding resource
		RACH Resource set #1	T，F，Preamble#x～Preamble#y
RACH Resource set #2	T，F，Preamble#m～Preamble#n

Where T denotes a time Resource, such as a subframe or a slot, F denotes a frequency Resource, such as a Physical Resource Block (PRB), and Preamble denotes a Preamble. As shown in table 1, RACH Resource set #1 and RACH Resource set #2 have the same time Resource and frequency Resource, T and F, and Preamble codes are different.

The second mode is as follows: the first time resource and the second time resource are the same, the first frequency resource and the second frequency resource are different, and the first random access preamble set and the second random access preamble set are the same.

This second way may be as shown in table 2, for example.

TABLE 2

Random access channel resources	Corresponding resource
		RACH Resource set #1	T，F1，Preamble#x～Preamble#y
RACH Resource set #2	T，F2，Preamble#x～Preamble#y

As shown in table 2, the time Resource of RACH Resource set #1 and RACH Resource set #2 is T, the frequency Resource of RACH Resource set #1 is F1, the frequency Resource of RACH Resource set #2 is F2, and the Preamble codes are all Preamble # x to Preamble # y.

The third mode is as follows: the first time resource and the second time resource are different, the first frequency resource and the second frequency resource are the same, and the first random access preamble set and the second random access preamble set are the same.

This third way may be shown in table 3, for example.

TABLE 3

Random access channel resources	Corresponding resource
		RACH Resource set #1	T1,F,Preamble#x～Preamble#y
RACH Resource set #2	T2,F,Preamble#x～Preamble#y

As shown in table 3, the frequency resources of RACH Resource set #1 and RACH Resource set #2 are both F, the time Resource of RACH Resource set #1 is T1, the time Resource of RACH Resource set #2 is T2, and the Preamble codes are Preamble # x to Preamble # y. In addition, optionally, the time Resource, frequency Resource and Preamble code of RACH Resource set #1 and RACH Resource set #2 may all be different.

Accordingly, upon receiving the Msg1, it is determined whether the RACH Resource used by the user equipment to transmit the Msg1 belongs to the RACH Resource set #1 or the RACH Resource set # 2. When belonging to the first RACH Resource set #1, the user equipment is determined to be the first capable user. When belonging to the RACH Resource set #2, the user equipment is determined to be the second capable user.

Fig. 3 is a flowchart of a random access method of another MTC system according to the embodiment shown in fig. 1, where, as shown in fig. 3, the step S13 of sending a physical downlink channel message containing a random access response and reconfiguration information of a physical downlink channel to the ue may include the following steps:

in step S131, a first MPDCCH message is sent to the ue, where the first MPDCCH message includes the first scheduling information of the random access response.

The first scheduling information may include resource information of the MPDSCH carrying the random access response, i.e., carrying Msg2, and a modulation scheme when the base station sends the MPDSCH message carrying Msg 2. So that the user equipment obtains the first scheduling information after parsing the first MPDCCH message, thereby knowing the resource information of the MPDSCH carrying Msg2 and the modulation method, so that the user equipment can know how to receive the first MPDSCH message in step S132.

In step S132, a first MPDSCH message is sent to the ue, where the first MPDSCH message includes the random access response and reconfiguration information of MPDCCH, the random access response includes second scheduling information of the scheduling transmission message, and the reconfiguration information is used to indicate reconfigured MPDCCH resources, where the reconfigured MPDCCH resources are determined according to the user type.

Further, the MPDCCH message and the MPDSCH message may also be divided into two types for different user types, which may include a first type (type1) and a second type (type 2).

The first type of MPDCCH message is an MPDCCH message of an LTE control channel region which does not occupy a subframe, the second type of MPDCCH message is an MPDCCH message of an LTE control channel region which occupies a subframe, the first type of MPDSCH message is an MPDSCH message of an LTE control channel region which does not occupy a subframe, and the second type of MPDCCH message is an MPDSCH message of an LTE control channel region which occupies a subframe.

Therefore, in the first implementation of this embodiment, when the first MPDCCH message and the MPDSCH message are sent to the user equipment, the MPDCCH message and the MPDSCH message of corresponding types may be sent for the user type of the user equipment. Accordingly, the random access resource described in step S11 further includes: the system comprises a first MPDCCH set and a second MPDCCH set, wherein the first MPDCCH set is an MPDCCH resource set used for dispatching a random access response to a first capability user, and the second MPDCCH set is an MPDCCH resource set used for dispatching a random access response to a second capability user. The resource mapping of the first MPDCCH set does not occupy the LTE control channel region of the subframe, and the resource mapping of the second MPDCCH set occupies the LTE control channel region of the subframe. In addition, the two MPDCCH sets may also be divided from the frequency domain or the time domain.

For example, the first MPDCCH set occupies a first time resource and a first frequency resource, and the second MPDCCH set occupies a second time resource and a second frequency resource. There may be three divisions:

the first mode is as follows: the first time resource is different from the second time resource, and the first frequency resource is different from the second frequency resource.

The second mode is as follows: the first time resource is the same as the second time resource, and the first frequency resource is different from the second frequency resource; or,

the third mode is as follows: the first time resource is different from the second time resource, and the first frequency resource is the same as the second frequency resource.

It should be further noted that, when performing random access resource allocation for a first capability user and a second capability user, the base station may perform independent configuration or may perform joint configuration. Wherein, the independent configuration may be understood as that each parameter in the resource set of the first capability user is independent from each parameter in the resource set of the second capability user; joint configuration may be understood as that part of the parameters in the set of resources of the first capability user and the set of resources of the second capability user may be configured together, i.e. may take the same value.

The above partial parameters may be, for example, a transmission method and a resource mapping method, where the resource mapping methods of the first MPDCCH set and the second MPDCCH set may be the same or different, and the transmission methods of the first MPDCCH set and the second MPDCCH set may also be the same or different, where the transmission methods include: transmit diversity or beamforming, and the resource mapping manner includes dispersive mapping or centralized mapping.

For example, the first MPDCCH set is denoted as MPDCCH set #1, and the second MPDCCH set is denoted as MPDCCH set #2, and the random access resources of the first-capability users and the second-capability users after independent configuration may be as shown in tables 4 and 5.

TABLE 4

RACH Resource set #1	RACH Resource set #1
		T1，F1，Preamble#x～Preamble#y	T2，F2，Preamble#m～Preamble#n

As shown in table 4, the frequency resources of RACH Resource set #1 and RACH Resource set #2 are both F1 and F2, the time resources of RACH Resource set #1 and RACH Resource set #2 are T1 and T2, and the Preamble codes of RACH Resource set #1 and RACH Resource set #2 are both Preamble # x to Preamble # y and Preamble # m to Preamble # n.

TABLE 5

MPDCCH set #1	MPDCCH set #2
		T1，F1	T2，F2
And (3) resource mapping mode: scatter mapping	And (3) resource mapping mode: centrality mapping
		The sending mode is as follows: transmit diversity	The sending mode is as follows: beam forming

As shown in table 5, the time resources of MPDCCH set #1 and MPDCCH set #2 are T1 and T2, the frequency resources of MPDCCH set #1 and MPDCCH set #2 are F1 and F2, and the resource mapping method and the transmission method are also different.

If joint configuration is adopted, the configured random access resources of the first capability user and the second capability user can be as shown in table 6.

TABLE 6

MPDCCH set #1	MPDCCH set #2
		T1，F1	T2，F2
And (3) resource mapping mode: centralized mapping	And (3) a resource mapping mode: centrality mapping
		The sending mode is as follows: beam forming	The sending mode is as follows: beam forming

As shown in table 6, the resource mapping method and the transmission method of the jointly configured MPDCCH set #1 and MPDCCH set #2 are the same.

Accordingly, the sending the first MPDCCH message to the user equipment in step S131 may include the following steps:

when the user equipment is a first-capability user, the first MPDCCH message is sent to the user equipment by using MPDCCH resources in a first MPDCCH set, and the first MPDCCH message is the first-type MPDCCH message.

When the user equipment is the second-capability user, the first MPDCCH message is sent to the user equipment by using the MPDCCH resource in the second MPDCCH set, and the first MPDCCH message is the second-type MPDCCH message.

Accordingly, the step S132 of sending the first MPDSCH message to the ue may include the following steps:

firstly, when the user equipment is a first-capability user, performing MPDCCH resource reconfiguration to obtain a third MPDCCH set. The third MPDCCH set is a resource set of an MPDCCH for scheduling a contention resolution message and an MPDCCH for scheduling subsequent data transmission for the first-capability user.

Secondly, the first MPDSCH message is sent to the ue, where the first MPDSCH message is a first type of MPDSCH message, the first MPDSCH message includes the random access response and reconfiguration information of MPDCCH, and the random access response includes the second scheduling information, where the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is the third MPDCCH set.

Or,

and when the user equipment is a second-capability user, carrying out resource reconfiguration on the MPDCCH to obtain a fourth MPDCCH set, wherein the fourth MPDCCH set is used for scheduling the MPDCCH of the contention resolution message and scheduling the MPDCCH of the subsequent data transmission for the second-capability user.

And sending the first MPDSCH message to the user equipment, where the first MPDSCH message is a second MPDSCH message, the first MPDSCH message includes the random access response and reconfiguration information of the MPDCCH, and the random access response includes the second scheduling information, where the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is a fourth MPDCCH set.

That is, before sending the MPDCCH message carrying Msg2, the base station needs to reconfigure the MPDCCH resources for subsequent transmission of Msg4, and during reconfiguration, the MPDCCH resources need to be divided according to the user type of the user equipment, and the configuration methods of the third MPDCCH set and the fourth MPDCCH set are the same as the configuration methods of the first MPDCCH set and the second MPDCCH set described above, and are not described again. On the other hand, the resource of the MPDCCH scheduling the subsequent data transmission may also be configured together when performing the reconfiguration, where the subsequent data transmission may be understood as a data transmission performed subsequently after the random access procedure is successful, and the data transmission may be, for example, traffic data of the user equipment.

The second scheduling information may include resource information of the MPUSCH carrying the scheduling transmission message, i.e., Msg3, and a modulation scheme that should be used when the ue sends the MPUSCH message carrying Msg 3. So that the user equipment can obtain Msg2 after parsing the first MPDSCCH message and obtain the second scheduling information from Msg2, thereby obtaining the resource information of the MPUSCH carrying Msg3 and the modulation method, and thus the user equipment can know how to send Msg 3.

In the second implementation of this embodiment, when the first MPDCCH message and the MPDSCH message are sent to the user equipment, the first MPDCCH message and the MPDSCH message may both adopt the first type regardless of whether the user type is the first-capability user or the second-capability user. The random access resource described in step S11 may not be divided into MPDCCH resources first. Correspondingly, the sending the first MPDCCH message to the user equipment in step S131 may include:

and when the user equipment is a first-capability user or a second-capability user, sending the first MPDCCH message to the user equipment, wherein the first MPDCCH message is a first-type MPDCCH message.

firstly, when the user equipment is a first-capability user, performing MPDCCH resource reconfiguration to obtain a fifth MPDCCH set, wherein the fifth MPDCCH set is a resource set of an MPDCCH used for scheduling the competition resolving message and an MPDCCH used for scheduling subsequent data transmission for the first-capability user; or,

and when the user equipment is a second-capability user, carrying out resource reconfiguration on the MPDCCH to obtain a sixth MPDCCH set, wherein the sixth MPDCCH set is a resource set of the MPDCCH used for scheduling the competition resolving message and the MPDCCH used for scheduling subsequent data transmission for the second-capability user.

Secondly, the first MPDSCH message is sent to the ue, where the first MPDSCH message is a first type of MPDSCH message, the first MPDSCH message includes the random access response and reconfiguration information of MPDCCH, and the random access response includes the second scheduling information.

That is, whether the user equipment is a first-capability user or a second-capability user, the MPDCCH messages scheduling Msg2 are first-type MPDCCH messages, and the MPDSCH messages carrying Msg2 are first-type MPDSCH messages. However, when the user equipment is the first-capability user, the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is the fifth MPDCCH set, and when the user equipment is the second-capability user, the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is the sixth MPDCCH set. The configuration method of the fifth MPDCCH set and the sixth MPDCCH set is the same as the configuration method of the first MPDCCH set and the second MPDCCH set, and is not repeated here.

Fig. 4 is a flowchart of a random access method of an MTC system according to the embodiment shown in fig. 1, where as shown in fig. 4, after receiving a scheduling transmission message sent by a user equipment, the step S14 of sending a physical downlink channel message including the contention resolution message to the user equipment by using the reconfigured physical downlink channel resource may include the following steps.

In step S141, after receiving the scheduling transmission message sent by the ue, the reconfigured physical downlink channel resource is used to send a second MPDCCH message to the ue, where the second MPDCCH message includes third scheduling information of the contention resolution message.

The third scheduling information may include resource information of the MPDSCH carrying the contention resolution message, i.e., Msg4, and a modulation mode when the base station sends the MPDSCH message carrying Msg 4. So that the user equipment obtains the third scheduling information after parsing the second MPDCCH message, thereby knowing the resource information of the MPDSCH carrying Msg4 and the modulation mode, so that the user equipment can know how to receive the second MPDSCH message in step S142.

In step S142, a second MPDSCH message is sent to the ue, where the second MPDSCH message includes the contention resolution message.

If the random access procedure adopts the first implementation scheme in this embodiment, steps S141 and S142 may include:

and when the user equipment is a first-capability user, transmitting a second MPDCCH message to the user equipment by using MPDCCH resources in the third MPDCCH set, wherein the second MPDCCH message is a first-class MPDCCH message and comprises third scheduling information of a contention resolution message.

And sending a second MPDSCH message to the user equipment, wherein the second MPDSCH message is the first kind of MPDSCH message, and the second MPDSCH message includes the contention resolution message.

Or,

when the user equipment is a second-capability user, transmitting a second MPDCCH message to the user equipment by using an MPDCCH resource in the fourth MPDCCH set, where the second MPDCCH message is a second-type MPDCCH message and includes the third scheduling information;

and sending a second MPDSCH message to the ue, where the second MPDSCH message is the second type of MPDSCH message and includes the contention resolution message.

If the random access procedure adopts the second implementation scheme in this embodiment, steps S141 and S142 may include:

when the user equipment is a first-capability user, a second MPDCCH message is sent to the user equipment by using an MPDCCH resource in the fifth MPDCCH set, where the second MPDCCH message is a first-class MPDCCH message and the second MPDCCH message includes third scheduling information of a contention resolution message.

Or,

when the user equipment is a second-capability user, transmitting a second MPDCCH message to the user equipment by using an MPDCCH resource in the sixth MPDCCH set, where the second MPDCCH message is a second-type MPDCCH message and includes the third scheduling information for contention;

and sending a second MPDSCH message to the ue, wherein the second MPDSCH message is the second kind of MPDSCH message, and the second MPDSCH message includes the contention resolution message.

That is, when the base station sends the MPDCCH message of scheduling Msg4, it should send the MPDCCH message using the MPDCCH resource in the MPDCCH set corresponding to the user type of the user equipment, and then send the MPDSCH message carrying Msg4 to the user equipment, send the MPDSCH message of a type corresponding to the user type of the user equipment.

Fig. 5 is a flowchart illustrating a random access method of an MTC system according to an exemplary embodiment, where the method is used in a user equipment, and as shown in fig. 5, the method may include the following steps.

In step S51, the random access resources of the first capability user and the second capability user are obtained by receiving the system broadcast message sent by the base station.

In step S52, a random access preamble is sent to the base station by using a random access resource corresponding to a user type of the user equipment, where the user type includes the first capability user or the second capability user.

After the base station, for example, the eNB sends the system broadcast message, the user equipment receiving the system broadcast message may select the random access channel resource for sending the random access preamble, that is, the Msg1, according to whether the user equipment is the first-capability user or the second-capability user, so that after the base station sends the system broadcast message, the base station may detect the Msg1 sent by the user equipment, and when receiving the Msg1 sent by a certain user equipment, the base station may determine whether the user type of the user equipment is the first-capability user or the second-capability user according to the random access channel resource sent by the user equipment by the Msg 1.

In step S53, a physical downlink channel message sent by the base station and including a random access response and reconfiguration information of a physical downlink channel is received, where the reconfiguration information is used to indicate a reconfigured physical downlink channel resource, and the reconfigured physical downlink channel resource is determined according to the user type.

When the base station reconfigures the physical downlink channel resource, the base station may configure different physical downlink channel resources for the user type of the ue, which is the first capability user or the second capability user, so that the reconfigured physical downlink channel resource indicated in the reconfiguration information is determined according to the user type.

In step S54, after the scheduling transmission message is sent to the base station, the physical downlink channel resource after reconfiguration is used to receive a physical downlink channel message including a contention resolution message sent by the base station.

The random access resource may include: a first set of random access channel resources for the first capable user to send the random access preamble, and a second set of random access channel resources for the second capable user to send the random access preamble. Fig. 6 is a flowchart of a random access preamble transmission method according to the embodiment shown in fig. 5, where, as shown in fig. 6, the step S52 of transmitting the random access preamble to the base station by using the random access resource corresponding to the user type of the user equipment includes:

in step S521, when the ue is a first-capability user, the random access preamble is sent to the base station by using the random access channel resource in the first random access channel resource set.

In step S522, when the ue is a second-capability user, the random access preamble is transmitted to the base station by using the random access channel resource in the second set of random access channel resources.

Further, different sets of random access channel resources may be defined for the random access channel resources from three dimensions of time, frequency, and Preamble code, such that the first set of random access channel resources includes: a first time resource, a first frequency resource and a first set of random access preambles, the second set of random access channel resources comprising: a second time resource, a second frequency resource, and a second set of random access preambles. Then there can be the following three ways of dividing the random access channel resource:

For example, the three manners are the same as the above-mentioned dividing manner of the three random access channel resources, and reference may be made to the contents shown in any one of table 1 to table 3, which is not described herein again.

Fig. 7 is a flowchart of a random access method of another MTC system according to the embodiment shown in fig. 5, where as shown in fig. 5, the receiving a physical downlink channel message sent by a base station and including a random access response and reconfiguration information of a physical downlink channel in step S53 may include the following steps:

in step S531, a first MPDCCH message sent by the base station is received, where the first MPDCCH message includes first scheduling information of a random access response.

The first scheduling information may include resource information of the MPDSCH carrying the random access response, i.e., carrying Msg2, and a modulation scheme when the base station sends the MPDSCH message carrying Msg 2. So that the user equipment obtains the first scheduling information after parsing the first MPDCCH message, thereby obtaining the resource information of the MPDSCH carrying Msg2 and the modulation method, and thus the user equipment can know how to receive the first MPDSCH message in step S532.

In step S532, a first MPDSCH message sent by the base station is received according to the first scheduling information, where the first MPDSCH message includes the random access response and reconfiguration information of the MPDCCH, and the random access response includes second scheduling information of the scheduling transmission message, where the reconfiguration information is used to indicate reconfigured MPDCCH resources, and the reconfigured MPDCCH resources are determined according to the user type.

For different user types, the MPDCCH message and the MPDSCH message may also be classified into the first type and the second type, and in a first implementation scheme of this embodiment, when the base station sends the first MPDCCH message and the MPDSCH message to the user equipment, the base station may send the MPDCCH message and the MPDSCH message of corresponding types for the user type of the user equipment. Correspondingly, the receiving of the first MPDCCH message sent by the base station in step S531 includes:

when the user equipment is a first-capability user, receiving a first MPDCCH message sent by the base station by using an MPDCCH resource in the first MPDCCH set, wherein the first MPDCCH message is the first-type MPDCCH message;

when the user equipment is a user with a second capability, receiving the first MPDCCH message sent by the base station by using an MPDCCH resource in the second MPDCCH set, where the first MPDCCH message is the second-type MPDCCH message.

Correspondingly, the receiving of the first MPDSCH message sent by the base station according to the first scheduling information in step S532 may include the following steps:

and when the user equipment is a first capability user, receiving the first MPDSCH message sent by the base station according to the first scheduling information. The first MPDSCH message is a first-class MPDSCH message, the first MPDSCH message includes the random access response and reconfiguration information of the MPDCCH, the random access response includes the second scheduling information, the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is a third MPDCCH set, and the third MPDCCH set is a resource set used for scheduling the MPDCCH of the contention resolution message and scheduling the MPDCCH of subsequent data transmission for the first-capability user.

When the user equipment is a second-capability user, receiving the first MPDSCH message sent by the base station according to the first scheduling information, where the first MPDSCH message is a second-class MPDSCH message, the first MPDSCH message includes the random access response and reconfiguration information of MPDCCH, the random access response includes the second scheduling information, the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is a fourth MPDCCH set, and the fourth MPDCCH set is a resource set used for scheduling the MPDCCH of the contention resolution message and an MPDCCH of scheduling subsequent data transmission for the second-capability user.

That is, before sending an MPDCCH message carrying a random access response, that is, Msg2, the base station needs to reconfigure the MPDCCH resources for subsequent Msg4 transmission, and during reconfiguration, the MPDCCH resources need to be divided according to a user type of the user equipment, and the third MPDCCH set and the fourth MPDCCH set are obtained after the base station reconfigures the MPDCCH resources, and the configuration method is the same as the configuration method of the first MPDCCH set and the second MPDCCH set described above, and is not described again. On the other hand, the resource of the MPDCCH scheduling the subsequent data transmission may also be configured together when the reconfiguration is performed, where the subsequent data transmission may be understood as a data transmission performed subsequently after the random access procedure is successful, and the data transmission may be, for example, service data of the user equipment.

The second scheduling information may include resource information of the MPUSCH carrying the scheduled transmission message, i.e. carrying Msg3, and a modulation mode that should be adopted when the user equipment sends the MPUSCH message carrying Msg 3. So that the user equipment obtains the Msg2 after parsing the first mpdcch message and obtains the second scheduling information from the Msg2, thereby obtaining the resource information of the MPUSCH carrying the Msg3 and the modulation mode, and thus the user equipment can know how to send the Msg 3.

In the second implementation of this embodiment, when the first MPDCCH message and the MPDSCH message are sent to the user equipment, the first MPDCCH message and the MPDSCH message may both be in the first class regardless of whether the user type is the first-capability user or the second-capability user. Then partitioning of MPDCCH resources may not be done first. Correspondingly, the receiving of the first MPDCCH message sent by the base station in step S531 includes:

and when the user equipment is a first-capability user or a second-capability user, receiving the first MPDCCH message sent by the base station, wherein the first MPDCCH message is a first-type MPDCCH message.

Correspondingly, the receiving of the first MPDSCH message sent by the base station according to the first scheduling information in step S532 may include:

receiving the first MPDSCH message sent by the base station, where the first MPDSCH message is a first type of MPDSCH message, the first MPDSCH message includes the random access response and reconfiguration information of MPDCCH, and the random access response includes the second scheduling information; when the user equipment is the first-capability user, the reconfiguration information is used for indicating that the reconfigured MPDCCH resource is a fifth MPDCCH set, when the user equipment is the second-capability user, the reconfiguration information is used for indicating that the reconfigured MPDCCH resource is a sixth MPDCCH set, the fifth MPDCCH set is a resource set of an MPDCCH used for scheduling the contention resolution message and an MPDCCH used for scheduling subsequent data transmission for the first-capability user, and the sixth MPDCCH set is a resource set of an MPDCCH used for scheduling the contention resolution message and an MPDCCH used for scheduling subsequent data transmission for the second-capability user.

In other words, in the second implementation scheme, when an MPDCCH of the schedule Msg2 is sent, different MPDCCH sets are not divided for a user equipment that is a first-capability user or a second-capability user, but are divided when the base station reconfigures MPDCCH resources, which is exemplified by: the fifth MPDCCH set occupies a first time resource and a first frequency resource, and the sixth MPDCCH set occupies a second time resource and a second frequency resource; wherein,

the resource mapping modes of the fifth MPDCCH set and the sixth MPDCCH set are the same or different, and the resource mapping modes comprise dispersive mapping or centralized mapping;

the fifth MPDCCH set and the sixth MPDCCH set have the same or different transmission modes, and the transmission modes include: transmit diversity or beamforming.

That is, the configuration methods of the fifth MPDCCH set and the sixth MPDCCH set are the same as the configuration methods of the first MPDCCH set and the second MPDCCH set described above (a time resource and a frequency resource in the fifth MPDCCH set may be the same as or partially the same as those in the first MPDCCH set, and a time resource and a frequency resource in the sixth MPDCCH set may be the same as those in the second MPDCCH set or partially the same as those in the sixth MPDCCH set, and may be actually configured by the base station as required), and are not described again.

Fig. 8 is a flowchart illustrating a random access method of an MTC system according to the embodiment shown in fig. 1, where as shown in fig. 8, after sending a scheduling transmission message to the base station and receiving a physical downlink channel message containing a contention resolution message sent by the base station by using the reconfigured physical downlink channel resource in step S54, the method may include the following steps.

In step S541, a scheduled transmission message is transmitted to the base station according to the second scheduling information.

After the user equipment analyzes the first MPDSCH message, Msg2 can be obtained, and the second scheduling information is obtained from Msg2, so that the resource information of the mpisch used for carrying Msg3 and the modulation mode of the mpisch, which are indicated by the base station, are known, and the user equipment sends Msg3 to the base station according to the resource information of the MPUSCH and the modulation mode.

In step S542, a second MPDCCH message sent by the base station is received by using the reconfigured physical downlink channel resource, where the second MPDCCH message includes third scheduling information of the contention resolution message.

The third scheduling information may include resource information of the MPDSCH carrying the contention resolution message, i.e., Msg4, and a modulation mode when the base station sends the MPDSCH message carrying Msg 4. So that the user equipment obtains the third scheduling information after parsing the second MPDCCH message, thereby knowing the resource information of the MPDSCH carrying Msg4 and the modulation method, so that the user equipment can know how to receive the second MPDSCH message in step S542.

In step S542, a second MPDSCH message sent by the base station is received according to the third scheduling information, where the second MPDSCH message includes the contention resolution message.

Wherein, if the random access procedure adopts the first implementation scheme in this embodiment, steps S542 to S543 may include:

and when the user equipment is the first-capability user, receiving a second MPDCCH message sent by the base station by using the MPDCCH resource in the third MPDCCH set, wherein the second MPDCCH message is the first-type MPDCCH message and comprises third scheduling information of the contention resolution message.

And receiving a second MPDSCH message sent by the base station according to the third scheduling information, wherein the second MPDSCH message is a first type of MPDSCH message and comprises the competition resolving message.

Or,

and when the user equipment is a user with a second capability, receiving a second MPDCCH message sent by the base station by using an MPDCCH resource in the fourth MPDCCH set, wherein the second MPDCCH message is a second type MPDCCH message, and the third scheduling information is in the second MPDCCH message.

And receiving a second MPDSCH message sent by the base station according to the third scheduling information, where the second MPDSCH message is a second kind of MPDSCH message and includes the contention resolution message.

If the random access procedure adopts the second implementation scheme in this embodiment, steps S542 to S543 may include:

and when the user equipment is the first-capability user, receiving a second MPDCCH message sent by the base station by using the MPDCCH resource in the fourth MPDCCH set, wherein the second MPDCCH message is the first-type MPDCCH message and comprises third scheduling information of the contention resolution message.

Or,

and when the user equipment is a user with a second capability, receiving a second MPDCCH message sent by the base station by using the MPDCCH resource in the sixth MPDCCH set, wherein the second MPDCCH message is a second type MPDCCH message, and the third scheduling information is contained in the second MPDCCH message.

And receiving a second MPDSCH message sent by the base station according to the third scheduling information, where the second MPDSCH message is a second type of MPDSCH message, and the second MPDSCH message includes the contention resolution message.

In the technical scheme, a base station sends a system broadcast message, wherein the broadcast message is used for indicating random access resources of a first capability user and a second capability user, the first capability user does not support physical downlink channel transmission by using an LTE control channel region of a subframe, and the second capability user supports physical downlink channel transmission by using the LTE control channel region of the subframe; when receiving a random access preamble sent by user equipment, a base station determines whether the user type of the user equipment is a first capacity user or a second capacity user according to a random access channel resource utilized when the user equipment sends the random access preamble; then the base station sends a physical downlink channel message containing random access response and reconfiguration information of a physical downlink channel to the user equipment, wherein the reconfiguration information is used for indicating the reconfigured physical downlink channel resource, and the reconfigured physical downlink channel resource is determined by the base station according to the user type; after receiving the scheduling transmission message sent by the user equipment, the base station sends a physical downlink channel message containing a contention resolution message to the user equipment by using the reconfigured physical downlink channel resource. In the present disclosure, different random access resources are configured for user equipments with different capabilities, and a mechanism for sending different types of physical downlink channel messages for different user capabilities in a random access process is provided, so that the mechanism can be applied to user equipments of a previous release version, and therefore backward compatibility of an independently deployed MTC system can be improved.

Fig. 9 is a block diagram illustrating a random access apparatus of an MTC system according to an exemplary embodiment of the present disclosure, which is applied to a base station, and as shown in fig. 9, the apparatus 900 may include:

a broadcast module 901, configured to send a system broadcast message, where the broadcast message is used to indicate random access resources of a first capability user and a second capability user, the first capability user does not support physical downlink channel transmission using an LTE control channel region of a subframe, and the second capability user supports physical downlink channel transmission using the LTE control channel region of the subframe;

a user identification module 902, configured to, when receiving a random access preamble sent by a user equipment, determine a user type of the user equipment according to a random access channel resource utilized when the user equipment sends the random access preamble, where the user type includes the first capability user or the second capability user;

a sending module 903, configured to send, to the ue, a physical downlink channel message including a random access response and reconfiguration information of a physical downlink channel, where the reconfiguration information is used to indicate a reconfigured physical downlink channel resource, and the reconfigured physical downlink channel resource is determined according to the user type;

the sending module 903 is further configured to, after receiving the scheduling transmission message sent by the user equipment, send a physical downlink channel message including a contention resolution message to the user equipment by using the reconfigured physical downlink channel resource.

Optionally, the random access resource includes: a first set of random access channel resources for the first capable user to transmit the random access preamble, and a second set of random access channel resources for the second capable user to transmit the random access preamble, the user identification module configured to:

when receiving the random access preamble, judging whether the random access channel resource utilized by the user equipment when sending the random access preamble belongs to the first random access channel resource set or the second random access channel resource set;

when belonging to the second set of random access channel resources, determining that the user equipment is the second capability user.

Fig. 10 is a block diagram of a sending module according to the embodiment shown in fig. 9, and as shown in fig. 10, the sending module 903 may include:

a first sending submodule 9031, configured to send a first MTC physical downlink control channel MPDCCH message to the user equipment, where the first MPDCCH message includes first scheduling information of the random access response;

a second sending sub-module 9032, configured to send a first MTC pdcch message to the ue, where the first MPDSCH message includes the random access response and reconfiguration information of MPDCCH, and the random access response includes second scheduling information of the scheduling transmission message, where the reconfiguration information is used to indicate reconfigured MPDCCH resources, and the reconfigured MPDCCH resources are determined according to the user type.

Optionally, in a first implementation of this embodiment, the random access resource includes: a first MPDCCH set and a second MPDCCH set, where the first MPDCCH set is an MPDCCH resource set used for scheduling the random access response for the first capability user, and the second MPDCCH set is an MPDCCH resource set used for scheduling the random access response for the second capability user, and the first sending sub-module 9031 is configured to:

when the user equipment is the second-capability user, the first MPDCCH message is sent to the user equipment by using the MPDCCH resource in the second MPDCCH set, and the first MPDCCH message is a second-type MPDCCH message;

the first type of MPDCCH message is an MPDCCH message that does not occupy an LTE control channel region of the subframe, and the second type of MPDCCH message is an MPDCCH message that occupies an LTE control channel region of the subframe.

Optionally, the second sending submodule 9032 is configured to:

when the user equipment is the first-capability user, performing resource reconfiguration on the MPDCCH to obtain a third MPDCCH set, wherein the third MPDCCH set is a resource set of the MPDCCH used for scheduling the competition resolving message and the MPDCCH used for scheduling subsequent data transmission for the first-capability user;

sending the first MPDSCH message to the user equipment, where the first MPDSCH message is a first-class MPDSCH message, the first MPDSCH message includes the random access response and reconfiguration information of MPDCCH, and the random access response includes the second scheduling information, where the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is the third MPDCCH set;

or,

when the user equipment is the second-capability user, performing resource reconfiguration on the MPDCCH to obtain a fourth MPDCCH set, wherein the fourth MPDCCH set is used for scheduling the MPDCCH of the competition resolving message and scheduling the MPDCCH of subsequent data transmission for the second-capability user;

sending the first MPDSCH message to the ue, where the first MPDSCH message is a second MPDSCH message, the first MPDSCH message includes the random access response and reconfiguration information of MPDCCH, and the random access response includes the second scheduling information, where the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is the fourth MPDCCH set;

the first type of the MPDSCH message is an MPDSCH message which does not occupy an LTE control channel region of the subframe, and the second type of the MPDSCH message is an MPDSCH message which occupies the LTE control channel region of the subframe.

Optionally, in a second implementation scheme of this embodiment, the first sending submodule 9031 is configured to:

Optionally, the second sending submodule 9032 is configured to:

when the user equipment is the first-capacity user, carrying out MPDCCH resource reconfiguration to obtain a reconfigured first MPDCCH set, wherein the first MPDCCH set is used for sending a first-type MPDCCH message to the first-capacity user;

when the user equipment is the first-capacity user, performing resource reconfiguration on the MPDCCH to obtain a fifth MPDCCH set, wherein the fifth MPDCCH set is used for scheduling the MPDCCH of the competition resolving message and scheduling the MPDCCH of subsequent data transmission for the first-capacity user;

when the user equipment is the second-capability user, performing resource reconfiguration on the MPDCCH to obtain a sixth MPDCCH set, wherein the sixth MPDCCH set is a resource set of the MPDCCH used for scheduling the contention resolution message and the MPDCCH used for scheduling subsequent data transmission for the second-capability user;

sending the first MPDSCH message to the ue, where the first MPDSCH message is a first type of MPDSCH message, the first MPDSCH message includes the random access response and reconfiguration information of MPDCCH, and the random access response includes the second scheduling information; when the user equipment is the first-capability user, the reconfiguration information is used for indicating the reconfigured MPDCCH resource to be the fifth MPDCCH set, and when the user equipment is the second-capability user, the reconfiguration information is used for indicating the reconfigured MPDCCH resource to be the sixth MPDCCH set;

the first time resource is different from the second time resource, and the first frequency resource is different from the second frequency resource; or,

the first time resource is the same as the second time resource, and the first frequency resource is different from the second frequency resource; or,

the first time resource is different from the second time resource, and the first frequency resource is the same as the second frequency resource;

Optionally, fig. 11 is a block diagram of another sending module shown in the embodiment shown in fig. 9, and as shown in fig. 11, the sending module 903 may include:

a reconfiguration sub-module 9033, configured to send, when the user equipment is a first-capability user, a second MPDCCH message to the user equipment by using an MPDCCH resource in the third MPDCCH set or the fifth MPDCCH set, where the second MPDCCH message is the first-type MPDCCH message and the second MPDCCH message includes third scheduling information of a contention resolution message;

a third sending submodule 9034, configured to send a second MPDSCH message to the user equipment, where the second MPDSCH message is the first type of MPDSCH message, and the second MPDSCH message includes the contention resolution message;

or,

the reconfiguration sub-module 9033 is configured to, when the user equipment is a second-capability user, send a second MPDCCH message to the user equipment by using an MPDCCH resource in the fourth MPDCCH set or a sixth MPDCCH set, where the second MPDCCH message is a second-type MPDCCH message and includes a contention for the third scheduling information;

the third sending submodule 9034 is configured to send a second MPDSCH message to the user equipment, where the second MPDSCH message is the second kind of MPDSCH message and includes the contention resolution message.

Fig. 12 is a block diagram illustrating a random access apparatus of another MTC system according to an exemplary embodiment of the present disclosure, which is applied to a user equipment, and as shown in fig. 12, the apparatus 1200 may include:

an obtaining module 1201, configured to obtain, by receiving a system broadcast message sent by a base station, random access resources of a first capability user and a second capability user, where the first capability user does not support physical downlink channel transmission using an LTE control channel region of a subframe, and the second capability user supports physical downlink channel transmission using the LTE control channel region of the subframe;

a sending module 1202, configured to send a random access preamble to the base station by using a random access resource corresponding to a user type of the user equipment, where the user type includes the first capability user or the second capability user;

a receiving module 1203, configured to receive a physical downlink channel message that is sent by the base station and includes a random access response and reconfiguration information of a physical downlink channel, where the reconfiguration information is used to indicate a reconfigured physical downlink channel resource, and the reconfigured physical downlink channel resource is determined according to the user type;

the receiving module 1203 is further configured to receive, after sending the scheduling transmission message to the base station, a physical downlink channel message that is sent by the base station and includes the contention resolution message, by using the reconfigured physical downlink channel resource.

Optionally, the random access resource includes: a first set of random access channel resources for the first capable user to transmit the random access preamble, and a second set of random access channel resources for the second capable user to transmit the random access preamble, the transmitting module 1202 configured to:

when the user equipment is the first capability user, the random access channel resource in the first random access channel resource set is utilized to send the random access preamble to the base station;

Optionally, the first set of random access channel resources and the second set of random access channel resources both include: time resources, frequency resources and random access preamble resources;

Fig. 13 is a block diagram of a receiving module according to the embodiment shown in fig. 12, and as shown in fig. 13, the receiving module 1203 includes:

a first receiving submodule 12031 configured to receive a first MTC physical downlink control channel MPDCCH message sent by the base station, where the first MPDCCH message includes first scheduling information of the random access response;

a second receiving sub-module 12032, configured to receive, according to the first scheduling information, a first MTC physical downlink shared channel MPDSCH message sent by the base station, where the first MPDSCH message includes the random access response and reconfiguration information of the MPDCCH, and the random access response includes second scheduling information of the scheduling transmission message, where the reconfiguration information is used to indicate reconfigured MPDCCH resources, and the reconfigured MPDCCH resources are determined according to the user type.

Optionally, in a first implementation of this embodiment, the random access resource includes: a first MPDCCH set and a second MPDCCH set, where the first MPDCCH set is an MPDCCH resource set for scheduling the random access response to the first-capability user, and the second MPDCCH set is an MPDCCH resource set for scheduling the random access response to the second-capability user, and the first receiving sub-module 12031 is configured to:

Optionally, the second receiving submodule 12032 is configured to:

when the user equipment is the first-capability user, receiving the first MPDSCH message sent by the base station according to the first scheduling information, where the first MPDSCH message is a first-class MPDSCH message, the first MPDSCH message includes the random access response and reconfiguration information of MPDCCH, the random access response includes the second scheduling information, the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is a third MPDCCH set, and the third MPDCCH set is a resource set of MPDCCH used for scheduling the contention resolution message and MPDCCH used for scheduling subsequent data transmission for the first-capability user;

when the user equipment is the second-capability user, receiving the first MPDSCH message sent by the base station according to the first scheduling information, where the first MPDSCH message is a second-type MPDSCH message, the first MPDSCH message includes the random access response and reconfiguration information of MPDCCH, the random access response includes the second scheduling information, the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is a fourth MPDCCH set, and the fourth MPDCCH set is a resource set of MPDCCH used for scheduling the contention resolution message and MPDCCH used for scheduling subsequent data transmission for the second-capability user;

Optionally, in a second implementation of this embodiment, the first receiving submodule 12031 is configured to:

Optionally, the second receiving submodule 12032 is configured to: receiving the first MPDSCH message sent by the base station, where the first MPDSCH message is a first type of MPDSCH message, the first MPDSCH message includes the random access response and reconfiguration information of MPDCCH, and the random access response includes the second scheduling information; when the user equipment is the first-capability user, the reconfiguration information is used for indicating the reconfigured MPDCCH resource to be a fifth MPDCCH set, when the user equipment is the second-capability user, the reconfiguration information is used for indicating the reconfigured MPDCCH resource to be a sixth MPDCCH set, the fifth MPDCCH set is a resource set of an MPDCCH used for scheduling the contention resolution message and an MPDCCH used for scheduling subsequent data transmission for the first-capability user, and the sixth MPDCCH set is a resource set of an MPDCCH used for scheduling the contention resolution message and an MPDCCH used for scheduling subsequent data transmission for the second-capability user;

the resource mapping modes of the first MPDCCH set and the second MPDCCH set are the same or different, and the resource mapping mode comprises dispersive mapping or centralized mapping;

Optionally, the sending module 1202 is further configured to: sending a scheduling transmission message to the base station according to the second scheduling information;

fig. 14 is a block diagram of another sending module according to the embodiment shown in fig. 12, and as shown in fig. 14, the receiving module 1203 may include:

a third receiving sub-module 12033, configured to receive, when the user equipment is a first-capability user, a second MPDCCH message sent by the base station using an MPDCCH resource in the third MPDCCH set or a fifth MPDCCH set, where the second MPDCCH message is the first-class MPDCCH message and the second MPDCCH message includes third scheduling information of a contention resolution message;

a fourth receiving submodule 12034, configured to receive a second MPDSCH message sent by the base station according to the third scheduling information, where the second MPDSCH message is the first kind of MPDSCH message and includes the contention resolution message;

or,

the third receiving sub-module 12033 is configured to, when the user equipment is a second-capability user, receive a second MPDCCH message sent by the base station using an MPDCCH resource in the fourth MPDCCH set or the sixth MPDCCH set, where the second MPDCCH message is the second-type MPDCCH message and the third scheduling information in the second MPDCCH message;

the fourth receiving submodule 12034 is configured to receive a second MPDSCH message sent by the base station according to the third scheduling information, where the second MPDSCH message is the second type of MPDSCH message, and the second MPDSCH message includes the contention resolution message.

In the technical scheme, a base station sends a system broadcast message, wherein the broadcast message is used for indicating random access resources of a first capability user and a second capability user, the first capability user does not support physical downlink channel transmission by using an LTE control channel region of a subframe, and the second capability user supports physical downlink channel transmission by using the LTE control channel region of the subframe; when receiving a random access preamble sent by user equipment, a base station determines whether the user type of the user equipment is a first capacity user or a second capacity user according to a random access channel resource utilized when the user equipment sends the random access preamble; then the base station sends a physical downlink channel message containing a random access response and reconfiguration information of a physical downlink channel to the user equipment, wherein the reconfiguration information is used for indicating the reconfigured physical downlink channel resource, and the reconfigured physical downlink channel resource is determined by the base station according to the user type; after receiving the scheduling transmission message sent by the user equipment, the base station sends a physical downlink channel message containing a contention resolution message to the user equipment by using the reconfigured physical downlink channel resource. In the present disclosure, different random access resources are configured for user equipments with different capabilities, and a mechanism for sending different types of physical downlink channel messages for different user capabilities in a random access process is provided, so that the mechanism can be applied to user equipments of a previous release version, and therefore backward compatibility of an independently deployed MTC system can be improved.

With regard to the apparatus in the above embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be described in detail here.

The present disclosure also provides a computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the steps of the random access method of the MTC system provided by the present disclosure.

Fig. 15 is a block diagram illustrating a random access device of yet another MTC system according to an example embodiment. For example, the apparatus 1500 may be a user device, such as a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and so forth.

Referring to fig. 15, apparatus 1500 may include one or more of the following components: processing component 1502, memory 1504, power component 1506, multimedia component 1508, audio component 1510, input/output (I/O) interface 1512, sensor component 1514, and communications component 1516.

The processing component 1502 generally controls overall operation of the device 1500, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 1502 may include one or more processors 1520 executing instructions to perform all or some of the steps of the random access method of the MTC system described above. Further, processing component 1502 may include one or more modules that facilitate interaction between processing component 1502 and other components. For example, processing component 1502 may include a multimedia module to facilitate interaction between multimedia component 1508 and processing component 1502.

The memory 1504 is configured to store various types of data to support operations at the apparatus 1500. Examples of such data include instructions for any application or method operating on the device 1500, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 1504 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.

The power component 1506 provides power to the various components of the device 1500. The power components 1506 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the apparatus 1500.

The multimedia component 1508 includes a screen that provides an output interface between the device 1500 and a user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 1508 includes a front-facing camera and/or a rear-facing camera. The front camera and/or the rear camera may receive external multimedia data when the apparatus 1500 is in an operation mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

Audio component 1510 is configured to output and/or input audio signals. For example, the audio component 1510 includes a Microphone (MIC) configured to receive external audio signals when the apparatus 1500 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may further be stored in the memory 1504 or transmitted via the communication component 1516. In some embodiments, audio component 1510 also includes a speaker for outputting audio signals.

The I/O interface 1512 provides an interface between the processing component 1502 and peripheral interface modules, which can be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

The sensor assembly 1514 includes one or more sensors for providing status assessment of various aspects of the apparatus 1500. For example, the sensor assembly 1514 can detect an open/closed state of the device 1500, the relative positioning of components, such as a display and keypad of the device 1500, the sensor assembly 1514 can also detect a change in position of the device 1500 or a component of the device 1500, the presence or absence of user contact with the device 1500, orientation or acceleration/deceleration of the device 1500, and a change in temperature of the device 1500. The sensor assembly 1514 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 1514 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 1514 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 1516 is configured to facilitate wired or wireless communication between the apparatus 1500 and other devices. The apparatus 1500 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 1516 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1516 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the apparatus 1500 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components for performing the random access method of the MTC system described above.

In an exemplary embodiment, a non-transitory computer-readable storage medium comprising instructions, such as the memory 1504 comprising instructions, executable by the processor 1520 of the apparatus 1500 to perform the method of random access of an MTC system as described above is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

Fig. 16 is a block diagram illustrating a random access method of still another MTC system according to an exemplary embodiment. For example, the apparatus 1600 may be provided as a server or base station. Referring to fig. 16, apparatus 1600 includes a processing component 1622 that further includes one or more processors and memory resources, represented by memory 1632, for storing instructions, such as applications, that are executable by processing component 1622. The application programs stored in memory 1632 may include one or more modules that each correspond to a set of instructions. Further, the processing component 1622 is configured to execute the instructions to perform the random access method of the MTC system described above.

The apparatus 1600 may also include a power component 1626 configured to perform power management for the apparatus 1600, a wired or wireless network interface 1650 configured to connect the apparatus 1600 to a network, and an input/output (I/O) interface 1658. The apparatus 1600 may operate based on an operating system stored in the memory 1632, such as Windows Server, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, or the like.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A random access method of an MTC system is applied to a base station, and the method comprises the following steps:

sending a system broadcast message, wherein the system broadcast message is used for indicating random access resources of a first capability user and a second capability user, the first capability user does not support the physical downlink channel transmission by using the LTE control channel area of the subframe, and the second capability user supports the physical downlink channel transmission by using the LTE control channel area of the subframe;

after receiving a scheduling transmission message sent by user equipment, sending a physical downlink channel message containing a contention resolution message to the user equipment by using the reconfigured physical downlink channel resource;

the sending, to the ue, a physical downlink channel message including a random access response and reconfiguration information of a physical downlink channel, where the reconfiguration information is used to indicate reconfigured physical downlink channel resources, and the reconfigured physical downlink channel resources are determined according to the user type, and the sending, to the ue, includes:

2. The method of claim 1, wherein the random access resource comprises: a first random access channel resource set used for the first capability user to send the random access preamble, and a second random access channel resource set used for the second capability user to send the random access preamble, wherein when receiving the random access preamble sent by the user equipment, the user type of the user equipment is determined according to the random access channel resource utilized when the user equipment sends the random access preamble, including:

3. The method of claim 2, wherein the first set of random access channel resources and the second set of random access channel resources each comprise: time resources, frequency resources and random access preamble resources;

4. The method of claim 1, wherein the random access resource comprises: a first MPDCCH set and a second MPDCCH set, where the first MPDCCH set is an MPDCCH resource set for scheduling the random access response for the first-capability user, and the second MPDCCH set is an MPDCCH resource set for scheduling the random access response for the second-capability user, where sending the first MPDCCH message to the user equipment includes:

5. The method of claim 4, wherein the sending a first MPDSCH message to the ue, the first MPDSCH message including the random access response and reconfiguration information of MPDCCH, the random access response including second scheduling information of the scheduling transmission message, the reconfiguration information indicating reconfigured MPDCCH resources, the reconfigured MPDCCH resources being determined according to the user type, comprises:

or,

6. The method of claim 1, wherein the sending the first MPDCCH message to the user equipment comprises:

the first type of MPDCCH message is an MPDCCH message that does not occupy an LTE control channel region of a subframe.

7. The method of claim 6, wherein the sending a first MPDSCH message to the ue, the first MPDSCH message including the random access response and reconfiguration information of MPDCCH, the random access response including second scheduling information of the scheduling transmission message, the reconfiguration information indicating reconfigured MPDCCH resources, the reconfigured MPDCCH resources being determined according to the user type, comprises:

the first type of MPDSCH message is an MPDSCH message which does not occupy the LTE control channel region of the subframe, and the second type of MPDSCH message is an MPDSCH message which occupies the LTE control channel region of the subframe.

8. The method of claim 4, wherein the first MPDCCH set occupies a first time resource and a first frequency resource, and wherein the second MPDCCH set occupies a second time resource and a second frequency resource;

9. The method of claim 5, wherein the sending, after receiving the scheduling transmission message sent by the ue, the physical downlink channel message including the contention resolution message to the ue using the reconfigured physical downlink channel resource comprises:

when the user equipment is a first-capability user, transmitting a second MPDCCH message to the user equipment by using MPDCCH resources in the third MPDCCH set, wherein the second MPDCCH message is the first-type MPDCCH message and comprises third scheduling information of a contention resolution message;

or,

when the user equipment is a second-capability user, sending a second MPDCCH message to the user equipment by using an MPDCCH resource in the fourth MPDCCH set, where the second MPDCCH message is the second-type MPDCCH message and includes the third scheduling information for contention;

and sending a second MPDSCH message to the user equipment, where the second MPDSCH message is the second kind of MPDSCH message and the second MPDSCH message includes the contention resolution message.

10. The method of claim 7, wherein the sending, after receiving the scheduling transmission message sent by the ue, a physical downlink channel message including a contention resolution message to the ue using the reconfigured physical downlink channel resource comprises:

when the user equipment is a first-capability user, transmitting a second MPDCCH message to the user equipment by using MPDCCH resources in the fifth MPDCCH set, wherein the second MPDCCH message is the first-type MPDCCH message and comprises third scheduling information of a contention resolution message;

or,

when the user equipment is a second-capability user, transmitting a second MPDCCH message to the user equipment by using an MPDCCH resource in the sixth MPDCCH set, where the second MPDCCH message is a second-type MPDCCH message, the second-type MPDCCH message is an MPDCCH message occupying an LTE control channel region of a subframe, and the second MPDCCH message includes contention for the third scheduling information;

11. A random access method of an MTC system is applied to user equipment, and the method comprises the following steps:

acquiring random access resources of a first capability user and a second capability user by receiving a system broadcast message sent by a base station, wherein the first capability user does not support the physical downlink channel transmission by utilizing an LTE control channel region of a subframe, and the second capability user supports the physical downlink channel transmission by utilizing the LTE control channel region of the subframe;

after sending a scheduling transmission message to the base station, receiving a physical downlink channel message which is sent by the base station and contains a contention resolution message by using the reconfigured physical downlink channel resource;

the receiving, from the base station, a physical downlink channel message including a random access response and reconfiguration information of a physical downlink channel, where the reconfiguration information is used to indicate a reconfigured physical downlink channel resource, and the reconfigured physical downlink channel resource is determined according to the user type, and the receiving includes:

receiving a first MTC Physical Downlink Shared Channel (MPDSCH) message sent by the base station according to the first scheduling information, wherein the first MPDSCH message comprises the random access response and reconfiguration information of the MPDCCH, the random access response comprises second scheduling information of the scheduling transmission message, the reconfiguration information is used for indicating reconfigured MPDCCH resources, and the reconfigured MPDCCH resources are determined according to the user type.

12. The method of claim 11, wherein the random access resource comprises: a first set of random access channel resources for the first capability user to send the random access preamble, and a second set of random access channel resources for the second capability user to send the random access preamble, the sending the random access preamble to the base station using random access resources corresponding to a user type of the user equipment, comprising:

13. The method of claim 12, wherein the first set of random access channel resources and the second set of random access channel resources each comprise: time resources, frequency resources and random access preamble resources;

14. The method of claim 11, wherein the random access resource comprises: the method includes the steps of receiving a first MPDCCH message sent by a base station, where the first MPDCCH set is an MPDCCH resource set used for scheduling the random access response for the first-capability user, and the second MPDCCH set is an MPDCCH resource set used for scheduling the random access response for the second-capability user, and the method includes:

15. The method of claim 14, wherein the receiving a first MPDSCH message sent by the base station according to the first scheduling information, the first MPDSCH message includes the random access response and reconfiguration information of MPDCCH, the random access response includes second scheduling information of the scheduling transmission message, the reconfiguration information is used to indicate reconfigured MPDCCH resources, and the reconfigured MPDCCH resources are determined according to the user type, and the method includes:

when the user equipment is the second-capability user, receiving the first MPDSCH message sent by the base station according to the first scheduling information, where the first MPDSCH message is a second-class MPDSCH message, the first MPDSCH message includes the random access response and reconfiguration information of MPDCCH, the random access response includes the second scheduling information, the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is a fourth MPDCCH set, and the fourth MPDCCH set is a resource set used for scheduling the MPDCCH of the contention resolution message and the MPDCCH of scheduling subsequent data transmission for the second-capability user;

16. The method of claim 11, wherein the receiving the first MPDCCH message sent by the base station comprises:

17. The method of claim 16, wherein the receiving a first MPDSCH message sent by the base station according to the first scheduling information, the first MPDSCH message includes the random access response and reconfiguration information of MPDCCH, the random access response includes second scheduling information of the scheduling transmission message, the reconfiguration information is used to indicate reconfigured MPDCCH resources, and the reconfigured MPDCCH resources are determined according to the user type, and the method includes:

receiving the first MPDSCH message sent by the base station, where the first MPDSCH message is a first type of MPDSCH message, the first MPDSCH message includes the random access response and reconfiguration information of MPDCCH, and the random access response includes the second scheduling information; when the user equipment is the first-capability user, the reconfiguration information is used for indicating that the reconfigured MPDCCH resource is a fifth MPDCCH set, and when the user equipment is the second-capability user, the reconfiguration information is used for indicating that the reconfigured MPDCCH resource is a sixth MPDCCH set, the fifth MPDCCH set is a resource set of an MPDCCH used for scheduling the contention resolution message and an MPDCCH used for scheduling subsequent data transmission for the first-capability user, and the sixth MPDCCH set is a resource set of an MPDCCH used for scheduling the contention resolution message and an MPDCCH used for scheduling subsequent data transmission for the second-capability user;

18. The method of claim 14, wherein the first MPDCCH set occupies a first time resource and a first frequency resource, and wherein the second MPDCCH set occupies a second time resource and a second frequency resource;

19. The method according to claim 15, wherein the receiving, by using the reconfigured physical downlink channel resource, the physical downlink channel message including the contention resolution message after the scheduling transmission message is sent to the base station, comprises:

when the user equipment is a first-capability user, receiving a second MPDCCH message sent by the base station by using an MPDCCH resource in the third MPDCCH set, where the second MPDCCH message is the first-class MPDCCH message and includes third scheduling information of a contention resolution message;

receiving a second MPDSCH message sent by the base station according to the third scheduling information, where the second MPDSCH message is the first kind of MPDSCH message and includes the contention resolution message;

or,

when the user equipment is a second-capability user, receiving a second MPDCCH message sent by the base station by using an MPDCCH resource in the fourth MPDCCH set, where the second MPDCCH message is the second-type MPDCCH message and the third scheduling information in the second MPDCCH message;

and receiving a second MPDSCH message sent by the base station according to the third scheduling information, where the second MPDSCH message is the second type of MPDSCH message, and the second MPDSCH message includes the contention resolution message.

20. The method according to claim 17, wherein said receiving, after sending the scheduling transmission message to the base station, the physical downlink channel message including the contention resolution message sent by the base station using the reconfigured physical downlink channel resource comprises:

when the user equipment is a first-capability user, receiving a second MPDCCH message sent by the base station by using an MPDCCH resource in a fifth MPDCCH set, wherein the second MPDCCH message is the first-type MPDCCH message and comprises third scheduling information of a contention resolution message;

or,

when the user equipment is a second-capability user, receiving a second MPDCCH message sent by the base station by using an MPDCCH resource in the sixth MPDCCH set, where the second MPDCCH message is a second-type MPDCCH message, the second-type MPDCCH message is an MPDCCH message that occupies an LTE control channel region of a subframe, and the third scheduling information in the second MPDCCH message;

21. A random access device of an MTC system, applied to a base station, the device comprising:

a broadcast module configured to send a system broadcast message, where the system broadcast message is used to indicate random access resources of a first capability user and a second capability user, the first capability user does not support physical downlink channel transmission by using an LTE control channel region of a subframe, and the second capability user supports physical downlink channel transmission by using the LTE control channel region of the subframe;

the sending module is further configured to send a physical downlink channel message including a contention resolution message to the user equipment by using the reconfigured physical downlink channel resource after receiving a scheduling transmission message sent by the user equipment;

wherein, the sending module includes:

a second sending sub-module, configured to send a first MTC physical downlink shared channel MPDSCH message to the user equipment, where the first MPDSCH message includes the random access response and reconfiguration information of the MPDCCH, and the random access response includes second scheduling information of the scheduling transmission message, where the reconfiguration information is used to indicate reconfigured MPDCCH resources, and the reconfigured MPDCCH resources are determined according to the user type.

22. The apparatus of claim 21, wherein the random access resource comprises: a first set of random access channel resources for the first capable user to transmit the random access preamble and a second set of random access channel resources for the second capable user to transmit the random access preamble, the user identification module configured to:

23. The apparatus of claim 22, wherein the first set of random access channel resources and the second set of random access channel resources each comprise: time resources, frequency resources and random access preamble resources;

24. The apparatus of claim 21, wherein the random access resource comprises: a first MPDCCH set and a second MPDCCH set, the first MPDCCH set being an MPDCCH resource set for scheduling the random access response for the first-capability user, the second MPDCCH set being an MPDCCH resource set for scheduling the random access response for the second-capability user, the first transmitting sub-module configured to:

25. The apparatus of claim 24, wherein the second transmitting submodule is configured to:

when the user equipment is the first-capability user, performing resource reconfiguration on the MPDCCH to obtain a third MPDCCH set, wherein the third MPDCCH set is a resource set of the MPDCCH used for scheduling the contention resolution message and scheduling subsequent data transmission for the first-capability user;

or,

sending the first MPDSCH message to the user equipment, where the first MPDSCH message is a second-class MPDSCH message, the first MPDSCH message includes the random access response and reconfiguration information of MPDCCH, the random access response includes the second scheduling information, and the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is the fourth MPDCCH set;

26. The apparatus of claim 21, wherein the first sending submodule is configured to:

27. The apparatus of claim 26, wherein the second transmit submodule is configured to:

when the user equipment is the first-capacity user, performing MPDCCH resource reconfiguration to obtain a reconfigured first MPDCCH set, wherein the first MPDCCH set is used for sending a first-type MPDCCH message to the first-capacity user;

28. The apparatus of claim 24, wherein the first MPDCCH set occupies a first time resource and a first frequency resource, and wherein the second MPDCCH set occupies a second time resource and a second frequency resource;

29. The apparatus of claim 25, wherein the sending module comprises:

a reconfiguration sub-module, configured to send, when the user equipment is a first-capability user, a second MPDCCH message to the user equipment by using an MPDCCH resource in the third MPDCCH set, where the second MPDCCH message is the first-class MPDCCH message and the second MPDCCH message includes third scheduling information of a contention resolution message;

a third sending submodule configured to send a second MPDSCH message to the user equipment, where the second MPDSCH message is the first kind of MPDSCH message and includes the contention resolution message;

or,

the reconfiguration sub-module is configured to send a second MPDCCH message to the user equipment by using an MPDCCH resource in the fourth MPDCCH set when the user equipment is a second capability user, where the second MPDCCH message is the second-type MPDCCH message and the second MPDCCH message includes the third scheduling information for contention;

30. The apparatus of claim 27, wherein the sending module comprises:

a reconfiguration sub-module, configured to send, when the user equipment is a first-capability user, a second MPDCCH message to the user equipment by using an MPDCCH resource in the fifth MPDCCH set, where the second MPDCCH message is the first-class MPDCCH message and the second MPDCCH message includes third scheduling information of a contention resolution message;

or,

the reconfiguration sub-module is configured to, when the user equipment is a second-capability user, send a second MPDCCH message to the user equipment by using an MPDCCH resource in the sixth MPDCCH set, where the second MPDCCH message is a second-type MPDCCH message, and the second-type MPDCCH message is an MPDCCH message that occupies an LTE control channel region of a subframe, and the second MPDCCH message includes contention for the third scheduling information;

31. A random access device of an MTC system, applied to a user equipment, the device comprising:

the system comprises an acquisition module, a transmission module and a processing module, wherein the acquisition module is configured to acquire random access resources of a first capability user and a second capability user by receiving a system broadcast message sent by a base station, the first capability user does not support physical downlink channel transmission by using an LTE control channel region of a subframe, and the second capability user supports physical downlink channel transmission by using the LTE control channel region of the subframe;

the receiving module is further configured to receive, by using the reconfigured physical downlink channel resource, a physical downlink channel message including a contention resolution message sent by the base station after sending a scheduling transmission message to the base station;

wherein, the receiving module comprises:

a second receiving sub-module, configured to receive a first MTC physical downlink shared channel MPDSCH message sent by the base station according to the first scheduling information, where the first MPDSCH message includes the random access response and reconfiguration information of MPDCCH, the random access response includes second scheduling information of the scheduling transmission message, the reconfiguration information is used to indicate reconfigured MPDCCH resources, and the reconfigured MPDCCH resources are determined according to the user type.

32. The apparatus of claim 31, wherein the random access resource comprises: a first set of random access channel resources for the first capable user to transmit the random access preamble and a second set of random access channel resources for the second capable user to transmit the random access preamble, the transmitting module configured to:

33. The apparatus of claim 32, wherein the first set of random access channel resources and the second set of random access channel resources each comprise: time resources, frequency resources and random access preamble resources;

34. The apparatus of claim 31, wherein the random access resource comprises: a first MPDCCH set and a second MPDCCH set, the first MPDCCH set being an MPDCCH resource set for scheduling the random access response for the first-capability user, the second MPDCCH set being an MPDCCH resource set for scheduling the random access response for the second-capability user, the first receiving sub-module being configured to:

35. The apparatus of claim 34, wherein the second receiving submodule is configured to:

36. The apparatus of claim 31, wherein the first receiving submodule is configured to:

the first type of MPDCCH message is an MPDCCH message of an LTE control channel region which does not occupy a subframe, and the second type of MPDCCH message is an MPDCCH message of an LTE control channel region which occupies a subframe.

37. The apparatus of claim 36, wherein the second receiving submodule is configured to:

38. The apparatus of claim 34, wherein the first MPDCCH set occupies a first time resource and a first frequency resource, and wherein the second MPDCCH set occupies a second time resource and a second frequency resource;

39. The apparatus of claim 35, wherein the transmitting module is further configured to: sending a scheduling transmission message to the base station according to the second scheduling information;

the receiving module further comprises:

a third receiving sub-module, configured to receive, when the user equipment is a first-capability user, a second MPDCCH message sent by the base station by using an MPDCCH resource in the third MPDCCH set, where the second MPDCCH message is the first-class MPDCCH message and includes third scheduling information of a contention resolution message;

or,

the third receiving sub-module is configured to receive, when the user equipment is a second-capability user, a second MPDCCH message sent by the base station by using an MPDCCH resource in the fourth MPDCCH set, where the second MPDCCH message is the second-type MPDCCH message and the third scheduling information in the second MPDCCH message;

the fourth receiving submodule is configured to receive a second MPDSCH message sent by the base station according to the third scheduling information, where the second MPDSCH message is the second type of MPDSCH message, and the second MPDSCH message includes the contention resolution message.

40. The apparatus of claim 37, wherein the transmitting module is further configured to: sending a scheduling transmission message to the base station according to the second scheduling information;

the receiving module further comprises:

a third receiving sub-module, configured to receive, when the user equipment is a first-capability user, a second MPDCCH message sent by the base station by using an MPDCCH resource in the fifth MPDCCH set, where the second MPDCCH message is the first-class MPDCCH message and includes third scheduling information of a contention resolution message;

or,

the third receiving sub-module is configured to receive, when the user equipment is a second-capability user, a second MPDCCH message sent by the base station by using an MPDCCH resource in the sixth MPDCCH set, where the second MPDCCH message is a second-type MPDCCH message, the second-type MPDCCH message is an MPDCCH message that occupies an LTE control channel region of a subframe, and the third scheduling information in the second MPDCCH message;

41. A random access device of an MTC system is applied to a base station, and comprises:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to: sending a system broadcast message, wherein the system broadcast message is used for indicating random access resources of a first capability user and a second capability user, the first capability user does not support the physical downlink channel transmission by using the LTE control channel area of the subframe, and the second capability user supports the physical downlink channel transmission by using the LTE control channel area of the subframe;

sending a first MTC Physical Downlink Control Channel (MPDCCH) message to the user equipment, wherein the first MPDCCH message comprises first scheduling information of the random access response;

42. A computer-readable storage medium having computer program instructions stored thereon, which, when executed by a processor, implement the steps of the method of any one of claims 1 to 10.

43. A random access device of an MTC system, applied to a user equipment, includes:

a processor;

a memory for storing processor-executable instructions;

44. A computer readable storage medium having stored thereon computer program instructions, which when executed by a processor, implement the steps of the method of any one of claims 11 to 20.