CN107005977B

CN107005977B - Information transmission method, base station and user equipment

Info

Publication number: CN107005977B
Application number: CN201580038884.2A
Authority: CN
Inventors: 余政; 张向东; 南方; 王轶; 程型清
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2015-08-14
Filing date: 2015-08-14
Publication date: 2020-11-17
Anticipated expiration: 2035-08-14
Also published as: CN107005977A; CN112492684B; CN112492685A; WO2017028052A1; CN112492684A

Abstract

A method for transmitting information, a base station and user equipment are provided. The information transmission method comprises the following steps: determining first downlink control information, wherein the first downlink control information comprises at least one of the following information: indication information of a narrowband resource used for first information transmission, indication information of a modulation coding method of first information transmission, frequency hopping indication information of the first information transmission, and coverage enhancement transmission indication information of the first information transmission, where the first information includes: a random access response message and/or a paging message; and sending the first downlink control information to the UE, and sending the first information to the UE according to the first downlink control information.

Description

Information transmission method, base station and user equipment

Technical Field

The embodiment of the invention relates to the field of communication, in particular to an information transmission method, a base station and user equipment.

Background

The internet of things is a network which acquires information of a physical world by deploying various devices with certain sensing, computing, executing and communication capabilities, and realizes information transmission, cooperation and processing through a network, so that interconnection of people and objects, and interconnection of objects and objects are realized. In short, the internet of things is to realize interconnection and intercommunication between people and objects. Possible applications include smart grid, smart agriculture, smart transportation, and environmental detection, among others.

The third Generation Partnership Project (3 rd Generation Partnership Project, 3GPP) of the mobile communication standardization organization is developing technical research and standard optimization work for internet of things services. The main research and optimization directions are cost reduction and coverage enhancement. In the aspect of cost reduction, the working bandwidth of the terminal device can be reduced, for example, the working bandwidth of the terminal device is limited to 1.4MHz, which is an important research direction; in the aspect of coverage enhancement, coverage enhancement support is mainly provided for Machine Type Communication (MTC) devices with large path loss in basements and the like, so that the devices in special scenes can be accessed to a network to obtain services, wherein signal repeated transmission is one of methods for realizing coverage enhancement. With the technique of signal repetition, some coverage enhancement can be brought about, but more resources may be consumed. How to improve the resource utilization rate in the case of using signal repetition to realize coverage enhancement is a problem to be solved.

For a Random Access Response (RAR) message or a paging message, according to the current protocol, the RAR message or the paging message is transmitted through a Physical Downlink shared data Channel (PDSCH) scheduled by a Physical Downlink Control Channel (PDCCH). User Equipment (User Equipment, UE) needs to receive a PDCCH first, obtain a Transport Block Size (Transport Block Size, TBS) of a random access response message (or paging message) according to an indication of control information in the received PDCCH, and then receive the random access response message (or paging message) according to the determined TBS.

In a scenario that coverage enhancement transmission needs to be performed on a random access response message (or a paging message), a user equipment first receives a control channel of scheduling information before receiving the random access response message (or the paging message), determines a size of a transmission block carrying the random access response message (or the paging message) according to the received control channel, and further receives the random access response message (or the paging message) according to the determined size of the transmission block. In order for the user equipment to successfully receive the random access response message (or the paging message), the control channel needs to be repeated for many times, and the random access response message (or the paging message) also needs to be repeated for many times, so that the resource overhead of the system is increased, the resource utilization rate of the network is reduced, and the detection complexity and the power consumption overhead of the user equipment are greatly increased.

Disclosure of Invention

The embodiment of the invention provides an information transmission method, a base station and user equipment, which can improve the resource utilization efficiency of downlink control information transmission and reduce the power consumption overhead of a user equipment detection channel.

In a first aspect, an embodiment of the present invention provides an information transmission method, including:

determining first downlink control information, wherein the first downlink control information comprises at least one of the following information: indication information of a narrowband resource used for first information transmission, indication information of a modulation coding method of first information transmission, frequency hopping indication information of the first information transmission, and coverage enhancement transmission indication information of the first information transmission, where the first information includes: a random access response message and/or a paging message;

and sending the first downlink control information to the UE, and sending the first information to the UE according to the first downlink control information.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the first downlink control information further includes at least one of the following information: the first information transmission comprises differentiation indication information of a downlink control information format, authorization differentiation indication information, resource allocation indication information in a narrow band used for the first information transmission, and transmission block size indication information of the first information transmission.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the first downlink control information further includes at least one of the following information: the system information updating indication information, the alarm indication information of the earthquake typhoon alarm system and the alarm indication information of the commercial mobile alarm service.

With reference to the first aspect or the first possible implementation manner or the second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the first downlink control information further includes: one or more random access preamble indication information corresponding to the random access response message.

With reference to the first aspect or the first possible implementation manner, the second possible implementation manner, or the third possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, a load size of the first downlink control information is the same as a load size of second downlink control information, where the second downlink control information is used to carry the first information.

In a second aspect, an embodiment of the present invention provides an information transmission method, including:

receiving first downlink control information sent by a base station;

acquiring at least one of the following information from the downlink control information: indication information of a narrowband resource used for first information transmission, indication information of a modulation coding method of first information transmission, frequency hopping indication information of the first information transmission, and coverage enhancement transmission indication information of the first information transmission, where the first information includes: a random access response message and/or a paging message;

and receiving the first information according to the first downlink control information.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the first downlink control information further includes at least one of the following information: the first information transmission method includes the following steps of distinguishing indication information of a downlink control information format, distinguishing indication information authorized by the downlink control information, resource allocation indication information in a narrow band used for the first information transmission, and transmission block size indication information of the first information transmission.

With reference to the second aspect or the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the first downlink control information further includes at least one of the following information: the system information updating indication information, the alarm indication information of the earthquake typhoon alarm system and the alarm indication information of the commercial mobile alarm service.

With reference to the second aspect or the first possible implementation manner or the second possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, the first downlink control information further includes: one or more random access preamble identification indication information corresponding to the random access response message.

With reference to the second aspect or the first possible implementation manner, the second possible implementation manner, or the third possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the first information is carried in second downlink control information, and a load size of the first downlink control information is the same as a load size of the second downlink control information.

In a third aspect, an embodiment of the present invention further provides a base station, including:

an information determining module, configured to determine first downlink control information, where the first downlink control information includes at least one of the following information: indication information of a narrowband resource used for first information transmission, indication information of a modulation coding base station of the first information transmission, frequency hopping indication information of the first information transmission, and coverage enhancement transmission indication information of the first information transmission, wherein the first information includes: a random access response message and/or a paging message;

a sending module, configured to send the first downlink control information to the UE, and send the first information to the UE according to the first downlink control information.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the first downlink control information further includes at least one of the following information: the first information transmission comprises differentiation indication information of a downlink control information format, authorization differentiation indication information, resource allocation indication information in a narrow band used for the first information transmission, and transmission block size indication information of the first information transmission.

With reference to the third aspect or the first possible implementation manner of the third aspect, in a second possible implementation manner of the third aspect, the first downlink control information further includes at least one of the following information: the system information updating indication information, the alarm indication information of the earthquake typhoon alarm system and the alarm indication information of the commercial mobile alarm service.

With reference to the third aspect or the first possible implementation manner or the second possible implementation manner of the third aspect, in a third possible implementation manner of the third aspect, the first downlink control information further includes: one or more random access preamble indication information corresponding to the random access response message.

With reference to the third aspect or the first possible implementation manner, the second possible implementation manner, or the third possible implementation manner of the third aspect, in a fourth possible implementation manner of the third aspect, a load size of the first downlink control information is the same as a load size of second downlink control information, where the second downlink control information is used to carry the first information.

In a fourth aspect, an embodiment of the present invention further provides a user equipment, including:

the receiving module is used for receiving first downlink control information sent by a base station;

an obtaining module, configured to obtain at least one of the following information from the downlink control information: indication information of a narrowband resource used for a first information transmission, indication information of modulation coding user equipment of the first information transmission, frequency hopping indication information of the first information transmission, and coverage enhancement transmission indication information of the first information transmission, wherein the first information includes: a random access response message and/or a paging message;

the receiving module is further configured to receive the first information according to the first downlink control information.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the first downlink control information further includes at least one of the following information: the first information transmission method includes the following steps of distinguishing indication information of a downlink control information format, distinguishing indication information authorized by the downlink control information, resource allocation indication information in a narrow band used for the first information transmission, and transmission block size indication information of the first information transmission.

With reference to the fourth aspect or the first possible implementation manner of the fourth aspect, in a second possible implementation manner of the fourth aspect, the first downlink control information further includes at least one of the following information: the system information updating indication information, the alarm indication information of the earthquake typhoon alarm system and the alarm indication information of the commercial mobile alarm service.

With reference to the fourth aspect or the first possible implementation manner or the second possible implementation manner of the fourth aspect, in a third possible implementation manner of the fourth aspect, the first downlink control information further includes: one or more random access preamble identification indication information corresponding to the random access response message.

With reference to the fourth aspect or the first possible implementation manner, the second possible implementation manner, or the third possible implementation manner of the fourth aspect, in a fourth possible implementation manner of the fourth aspect, the first information is carried in second downlink control information, and a load size of the first downlink control information is the same as a load size of the second downlink control information.

According to the technical scheme, the embodiment of the invention has the following advantages:

in the embodiment of the present invention, first, a base station determines first downlink control information, where the first downlink control information includes at least one of the following information: indication information of a narrow-band resource used for the first information transmission, modulation coding method indication information of the first information transmission, frequency hopping indication information of the first information transmission, and coverage enhancement transmission indication information of the first information transmission. The first information includes: a random access response message and/or a paging message. The base station firstly sends first downlink control information to the UE and then sends the first information to the UE according to the first downlink control information. In the embodiment of the present invention, the first downlink control information is used to schedule the first information, where the first downlink control information includes at least one of the foregoing indication information, and the foregoing indication information has less bit overhead, so that the first downlink control information has a more simplified structure, so that fewer resources can be used to transmit the first downlink control information, the resource utilization efficiency of transmitting the first downlink control information is improved, and the user equipment detects the simplified first downlink control information, so that the power consumption overhead of the user equipment for detecting the control channel can be reduced.

Drawings

Fig. 1 is a system architecture diagram of a communication system to which the information transmission method of the present invention is applied;

fig. 2 is a schematic flow chart of a method for transmitting information according to an embodiment of the present invention;

fig. 3 is a schematic flow chart of another information transmission method according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a base station according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a user equipment according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of another base station according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of another user equipment according to an embodiment of the present invention.

Detailed Description

The embodiment of the invention provides an information transmission method, a base station and user equipment, which can improve the resource utilization efficiency of downlink control information transmission and reduce the power consumption overhead of the user equipment for detecting a control channel and a data channel.

In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one skilled in the art from the embodiments given herein are intended to be within the scope of the invention.

The terms "first," "second," and the like in the description and in the claims, and in the drawings described above, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances and are merely descriptive of the invention in its embodiments for distinguishing between objects of the same nature. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of elements is not necessarily limited to those elements, but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Firstly, a system architecture applied to the information transmission method is introduced, and the method is mainly applied to an LTE system or an LTE-Advanced (LTE-A) system. The present invention can also be applied to other communication systems, such as Wideband Code Division Multiple Access (WCDMA), Time Division Synchronous Code Division Multiple Access (TD-SCDMA), etc., as long as an entity in the communication system can send information and another entity in the communication system can receive information. For example, the information is one or more of system information, a Random Access Response (RAR) message, and a paging message.

The transmission may be either transmission or reception in embodiments of the present invention. If the transmission of the equipment at one side is sending, the transmission of the communication equipment at the other side corresponding to the equipment at the side is receiving; and vice versa. Coverage enhancement in embodiments of the present invention may be one or more of repeated transmissions, spread spectrum transmissions, retransmissions, bundled time interval transmissions, narrowband (e.g., subcarrier scheduling) transmissions, ultra narrowband (e.g., bandwidth of tens of hertz to tens of kilohertz) transmissions, increased power spectral density transmissions, relaxed demand transmissions, and constant attempt transmissions. Referring to fig. 1, a system architecture diagram of the information transmission method applied in a communication system according to the present invention is shown in fig. 1, where a Base station (Base station) and User Equipments (UEs) 1 to 6 form a communication system, in the communication system, the Base station sends one or more of system information, RAR messages and paging messages to one or more UEs 1 to 6, the Base station is a sending end device in the information transmission method according to the present invention, and the UEs 1 to 6 are receiving end devices in the information transmission method according to the present invention. In addition, the UEs 4-6 also form a communication system, in which the UE5 may be implemented as a base station, and the UE5 may transmit one or more of system information, RAR messages, and paging messages to one or more of the UE4 and the UE 6.

The following are detailed below.

An embodiment of the information transmission method of the present invention may be applied to a base station sending information, please refer to fig. 2, where the information transmission method may include the following steps:

201. determining first downlink control information, wherein the first downlink control information comprises at least one of the following information: indication information of a narrow-band resource used for the first information transmission, modulation coding method indication information of the first information transmission, frequency hopping indication information of the first information transmission, and coverage enhancement transmission indication information of the first information transmission. Wherein the first information includes: a random access response message and/or a paging message.

In the embodiment of the present invention, when the base station needs to send control information to the user equipment through the control channel, the base station generates first downlink control information, where the first downlink control information is information transmitted by the control channel, and in order to improve the transmission efficiency of the downlink control information and simplify the detection overhead of the UE on the channel, the base station needs to generate brief first downlink control information. In the embodiment of the present invention, the first abbreviated downlink control information generated by the base station includes at least one of the following four types of information: 1) indication information of narrowband resources used for the first information transmission, 2), modulation coding method indication information of the first information transmission, 3), frequency hopping indication information of the first information transmission, 4), coverage enhancement transmission indication information of the first information transmission. Wherein the first information includes: a random access response message and/or a paging message. It should be noted that the first downlink control information may include any one of the above four information, or any two information, or any three information, or all four information, where which information or which information is specifically included in the first downlink control information may be specifically determined by an application scenario.

In some embodiments of the present invention, in addition to the at least one type of information of the indication information shown in 1) to 4) described above, the first downlink control information provided in embodiments of the present invention further includes at least one of the following four types of information: 5) the indication information of downlink control information format, 6), the indication information of authorized differentiation, 7), the indication information of resource allocation in the narrow band used for the first information transmission, 8), and the indication information of the size of the transmission block of the first information transmission. It should be noted that the first downlink control information may include any one of the above four information, or any two information, or any three information, or all four information. Specifically, which kind of information or which kind of information should be included in the first downlink control information may be specifically determined by an application scenario.

In some embodiments of the present invention, the first downlink control information includes at least one of the following three types of information in addition to the at least one type of information of the indication information shown in 1) to 4) described above, or the first information includes at least one type of information of the indication information shown in 1) to 8) described above: 9) system information update indication information, 10), alarm indication information of the earthquake typhoon alarm system, 11), alarm indication information of the commercial mobile alarm service. It should be noted that the first downlink control information may include any one of the three information, or any two of the three information, or all three information. Specifically, which kind of information or which kind of information should be included in the first downlink control information may be specifically determined by an application scenario.

In some embodiments of the invention, the first downlink control information further comprises: one or more random access preamble indication information corresponding to the random access response message. When the first downlink control information is used for scheduling the random access response message, one or more random access preamble identifications are also required to be included in the first downlink control information, and the one or more random access preamble identifications correspond to the random access response message.

It should be noted that, in the embodiment of the present invention, the first downlink control information may include one kind of indication information or multiple kinds of indication information in the foregoing description, and specific implementation manners of these indication information may refer to the description of the first downlink control information in the subsequent embodiments.

202. And sending the first downlink control information to the UE, and sending the first information to the UE according to the first downlink control information.

In this embodiment of the present invention, after the base station generates the simplified first downlink control information as described above, the first downlink control information is sent to the UE by the base station, the UE may obtain a scheduling indication of the first downlink control information for the first information by receiving the first downlink control information, and after the base station sends the first information to the UE according to the first downlink control information, the UE may receive the first information according to the scheduling indication of the first downlink control information for the first information, where the first information may be a random access response message or a paging message.

Specifically, in some embodiments of the present invention, if the base station sends the first information through the second downlink control information, and the first information may be carried in the second downlink control information, in order to reduce the complexity of the UE blind detection control channel, the load size of the first downlink control information is the same as the load size of the second downlink control information. The payload size is the number of bits, or bit length. That is, the first downlink control information and the second downlink control information have the same number of bits. In the embodiment of the present invention, a design method of the second downlink control information may be the same as or similar to a design method of the first downlink control information.

As can be seen from the above description of the embodiments of the present invention, first, the base station determines first downlink control information, where the first downlink control information includes at least one of the following information: indication information of a narrow-band resource used for the first information transmission, modulation coding method indication information of the first information transmission, frequency hopping indication information of the first information transmission, and coverage enhancement transmission indication information of the first information transmission. The first information includes: a random access response message and/or a paging message. And then the base station sends the first downlink control information to the UE, and sends the first information to the UE according to the first downlink control information. In the embodiment of the present invention, the first downlink control information is used to schedule the first information, and the first downlink control information only includes at least one of the foregoing indication information, so that the first downlink control information has a more simplified structure, and thus, the first downlink control information can be transmitted using fewer resources, so as to improve the resource utilization efficiency of transmitting the first downlink control information.

In the above embodiment, the method for transmitting information is described from the base station side, and next, the method for transmitting information provided by the present invention is described from the opposite end (user equipment) side of the base station, please refer to fig. 3, where the method for transmitting information provided by another embodiment of the present invention may include the following steps:

301. and receiving first downlink control information sent by the base station.

In the embodiment of the present invention, after the base station generates the reduced first downlink control information as described above, the first downlink control information is sent to the UE by the base station, and the UE receives the first downlink control information sent by the base station, and then triggers to execute step 302.

302. Acquiring at least one of the following information from the downlink control information: indication information of a narrow-band resource used for the first information transmission, modulation coding method indication information of the first information transmission, frequency hopping indication information of the first information transmission, and coverage enhancement transmission indication information of the first information transmission. The first information includes: a random access response message and/or a paging message.

In the embodiment of the present invention, the UE receives the first downlink control information sent by the base station, and the first downlink control information received by the UE is the first downlink control information reduced by the base station. Specifically, the simplified first downlink control information received by the UE includes at least one of the following information: 1) indication information of narrowband resources used for the first information transmission, 2), modulation coding method indication information of the first information transmission, 3), frequency hopping indication information of the first information transmission, 4), coverage enhancement transmission indication information of the first information transmission. Wherein the first information includes: a random access response message and/or a paging message. It should be noted that the first downlink control information may include any one of the above four information, or any two information, or any three information, or all four information, where which information or which information is specifically included in the first downlink control information may be specifically determined by an application scenario.

In some embodiments of the present invention, the first downlink control information includes at least one of the following three types of information in addition to the at least one type of information of the indication information shown in 1) to 4) described above, or the first information includes at least one type of information of the indication information shown in 1) to 8) described above: 9) system information update indication information, 10), alarm indication information of the earthquake typhoon alarm system, 11), alarm indication information of the commercial mobile alarm service. It should be noted that the first downlink control information may include any one of the three information, or any two of the three information, or all of the three information, where which information or which information is specifically included in the first downlink control information may be specifically determined by an application scenario.

303. First information is received according to the first downlink control information.

In the embodiment of the present invention, the UE may obtain the scheduling indication of the first downlink control information to the first information by receiving the first downlink control information. After the base station sends the first information to the UE according to the first downlink control information, the UE may receive the first information according to the scheduling indication of the first downlink control information. The first information may be a random access response message or a paging message.

In some embodiments of the present invention, the base station may bear the first information in the second downlink control information for transmission, and the UE may acquire the first information by detecting the second downlink control information, where in order to reduce the complexity of the UE blind detection control channel, the load size of the first downlink control information is the same as the load size of the second downlink control information.

As can be seen from the above description of the embodiments of the present invention, first, the UE receives first downlink control information sent by the base station, and acquires at least one of the following information from the first downlink control information: indication information of a narrow-band resource used for the first information transmission, modulation coding method indication information of the first information transmission, frequency hopping indication information of the first information transmission, and coverage enhancement transmission indication information of the first information transmission. The first information includes: and the UE receives first information sent by the base station according to the first downlink control information. In the embodiment of the present invention, the first downlink control information is used to schedule the first information, and the first downlink control information only includes at least one of the foregoing indication information, so that the first downlink control information has a more simplified structure, and thus, the first downlink control information can be transmitted using fewer resources, so as to improve the resource utilization efficiency of transmitting the first downlink control information.

In order to better understand and implement the above-mentioned schemes of the embodiments of the present invention, the following description specifically illustrates corresponding application scenarios.

Taking the process of random access response as an example, in the random access process of the existing LTE system, the UE needs to send a random access preamble first. And after the UE sends the random access preamble, the UE further receives a random access response message. The base station includes one or more random access responses in a random access response message to the UE. The Random Access response includes a Random Access Preamble identifier (Random Access Preamble identifier, abbreviated as RAPID), for example, the RAPID identifies a Random Access Preamble transmitted by the base station. After the UE receives the random access response, if the random access preamble identified by the RAPID in the random access response is the random access preamble sent by the UE, the UE considers that the random access response is the response of the base station to the random access preamble sent by itself. In the LTE system, a random access response message that a base station is giving to a UE is carried through a PDSCH. The UE needs to receive the control channel first, obtain the size of the transmission block of the random access response message according to the indication of the control information in the received control channel, and then receive the random access response message according to the determined size of the transmission block.

Taking the processing of the paging message as an example, in the existing LTE system, the idle UE needs to monitor the paging message to determine whether the network side or the base station pages the UE. The connected UE needs to monitor the paging message to determine whether the system information is updated. Paging messages sent by the base station to the UE are carried over a data channel, which is scheduled by a control channel. Therefore, when the UE monitors the paging message, it needs to detect the control channel for scheduling the paging message first. Only if the control channel is successfully detected, the data channel carrying the paging message is received according to the indication of the control channel.

For idle UE, once the UE successfully detects the data channel carrying the paging message, the UE needs to match its paging UE (Identity, ID for short) with the paging UE ID carried in the paging message, and if the matching is successful, the UE considers that the network side or the base station pages the UE. Otherwise, the UE considers the paging message as not paging the UE. For a connected UE, once the UE successfully detects a data channel carrying a paging message, the UE needs to see whether system information modification is indicated in the paging message.

One paging message may contain one or more paging UE IDs. Thus, one paging message may initiate paging for one or more UEs. As mentioned above, the UE needs to successfully detect the paging message scheduled by the control channel and the control channel before determining whether the paging message pages the UE or whether the paging message indicates that the system message is updated. For the UE, it may be successful to detect the paging message for the control channel and control channel scheduling, but find that the paging message did not page the UE or that the paging message did not indicate a system information update. Thus, the UE consumes much power. Especially for low cost or low complexity UEs, the power consumption issue is more critical.

In the random access procedure and the paging procedure implemented as above, the information transmission method provided by the embodiment of the present invention may be implemented. The base station carries out simplified design on the first downlink control information for scheduling the first information. The following description will be made by way of example. The embodiment of the invention provides a method for transmitting downlink control information and first information, wherein the first information is a random access response message and/or a paging message, and the transmission of the first information is scheduled by the first downlink control information. The embodiment of the invention mainly solves the problem that when the first downlink control information schedules the first information, the first downlink control information specifically comprises what contents.

In some embodiments of the invention, the first downlink control information may include: the first information transmits an indication of the narrowband resource used. In view of coverage enhancement or support for low complexity or low cost UEs, some narrowband resources may be partitioned in the system for coverage enhancement transmission or for serving low complexity (or low cost) UEs. The narrowband resource or narrowband is a specific frequency resource, and the narrowband resource may be composed of one or more resource blocks or one or more subcarriers. Wherein a low complexity (or low cost) UE can only receive and/or transmit information on one narrow band at the same time. Therefore, the first information can be transmitted only on one narrow band. The first downlink control information may include a narrowband resource indicating where the first information is transmitted. For example, the number of bits (English: bit) required to indicate the narrowband resource is: log2(floor (NDLRB/6) or floor (log2(NDLRB/6)), or ceil (log2 (NDLRB/6)). in the formula, the number of physical resource blocks in the 6 physical resource blocks (english full name: physical Resource Block, english abbreviation: PRB) constitutes one narrowband, if the narrowband size is n, the bit required for this field may be: log2(floor (NDLRB/n)) or floor (log2(NDLRB/n)), or ceil (log2(NDLRB/n)), where NDLRB is the downlink bandwidth in units of PRBs, e.g. 1.4MHz bandwidth, with 6 PRBs, 100 PRBs in 2 MHz bandwidth, and can therefore be divided into 16 narrow bands, a 4-bit indication is needed, the floor function represents rounding down, the ceil function represents rounding up, or the number of bits needed to indicate narrowband resources is: floor (log2(M)) or ceil (log2(M)), where M is the number of narrowbands configured by the base station.

In some embodiments of the invention, the first downlink control information may include: resource allocation indication information within a narrow band used for the first information transmission. Taking the example that the narrowband comprises 6 PRBs, the resource allocation within the narrowband indicates the location of the 6PRB narrowband, i.e. the resource allocation within the narrowband specifically indicates which specific ones of the 6 PRBs in the narrowband are used for random access response transmission. The bits required for the resource allocation indication information in the narrowband are exemplified as follows: this field may be omitted if the first information transmission occupies all PRBs of the narrowband, e.g. the indication of 6 PRBs may be done with 6 bits in a bitmap indication. In order to reduce the number of indicated bits, the number of PRBs occupied by the first information transmission and possible PRB positions may be defined. For example, assume that indexes of PRBs included in the narrowband are: PRB n, PRB n +1, PRB n +2, PRB n +3, PRB n +4, PRB n + 5. The first information transmission is restricted to occupy only 2 PRBs, 4 PRBs, 6 PRBs. As shown in table 1 below, a method of indicating narrowband resources used for transmission with 3 bits is illustrated. It is to be understood that table 1 below is merely an illustration, and the corresponding relationship between the status of the narrowband resource indication bit and the narrowband resource indication may also be changed.

As shown in table 2 below, a method of indicating narrowband resources used for transmission with 2 bits is illustrated.

It should be noted that, in the embodiments of the present invention, the correspondence between the status of the narrowband resource indication bit in the tables in table 1 and table 2 and the indication of the narrowband resource is merely an example, and actually, the correspondence between the status of the narrowband resource indication bit and the indication of the narrowband resource may be changed. The resource allocation of 2 RBs, 4 RBs, 6 RBs in the narrowband may be indicated by bit for control channel transmission, or 4 RBs, 6 RBs in the narrowband may be indicated by bit for control channel transmission, without being limited to the table shown above.

In some embodiments of the invention, the first downlink control information may include: the modulation coding method indication information of the first information transmission may determine bits required by the field according to the number of supported modulation coding methods. For example, if a fixed modulation coding scheme is supported, or the modulation coding scheme is implicitly determined according to other information, the field may not be included. For example, 2 to 4 bits may be used to indicate the modulation coding method.

In some embodiments of the invention, the first downlink control information may include: frequency hopping indication information of the first information transmission. A frequency hopping configuration for indicating a first information transmission. This field may not be included if the first information transmitted is always frequency hopped, or the first information transmitted is always not frequency hopped, or frequency hopped as predefined or preconfigured. The hopping configuration may be indicated with 0-2 bits.

In some embodiments of the invention, the first downlink control information may include: and the authorization distinguishing indication information is used for distinguishing indication of uplink authorization and downlink authorization. If the UE further detects whether the downlink control information is used for uplink scheduling in the search space of the control channel for scheduling the first information transmission, and the size of the downlink control information for uplink scheduling is the same as that of the downlink control information for scheduling the first information, 1bit is required to indicate the uplink grant and the downlink grant. If the control channel of the UE in the search space of the control channel scheduling the first information transmission is not used for uplink scheduling, this field is not needed to distinguish the uplink grant from the downlink grant. Considering that the narrowband has only 6 PRBs and the control channel scheduling the first information transmission needs to occupy more resources or ensure performance by repetition, it may be specified that the uplink grant is not detected in the search space of the control channel scheduling the first information transmission. This may not be included, thereby saving the payload size of the first downlink control information.

In some embodiments of the invention, the first downlink control information may include: system information update indication information (english name systemlnfommodify). E.g., the first downlink control information may indicate system information update with 1 bit. For example, if the first downlink control information indicates systemlnfodification, the UE considers that the system information may be updated. Of course, it may also be indicated in the first downlink control information which specific system information is updated. For example, the system information may be indicated by bitmap (english name) or by multi-bit association.

In some embodiments of the invention, the first downlink control information may include: alarm indication information of an Earthquake typhoon alarm System (called as Earth and Tsunami Warning System in English for short) is provided. As in the first downlink control information, ETWS may be indicated with 1 bit.

In some embodiments of the invention, the first downlink control information may include: alarm indication information of Commercial Mobile Alert Service (CMAS). For example, the CMAS may be indicated by 1bit in the downlink control information.

In some embodiments of the invention, the first downlink control information may include: the transport block size indication information of the first information transmission. The field in the first downlink control information is not required to indicate the transport block size if the transport block size of the first information transmission is determined from other already indicated parameters. Otherwise, the first downlink control information needs to indicate the size of the transport block, for example, 2 bits are used to indicate the size of the transport block.

In some embodiments of the invention, the first downlink control information may include: the coverage enhancement transmission indication information of the first information transmission. The coverage enhancement transmission indication information is coverage enhancement level information or repetition number information or bundling transmission size information. The first downlink control information does not need to indicate coverage enhancement transmission indication information for the first information transmission if the coverage enhancement transmission indication information for the first information transmission is determined from the repetition level (or number of repetitions) of the channel prior to the first information transmission. The channel before the first information transmission may be a random access preamble, or a control channel scheduling a random access response, or a control channel scheduling a paging message. Otherwise, 1-3 bits can be used for indicating the coverage enhancement transmission indication information. The number of repetitions of the first information may be added to the number of repetitions B by the number of repetitions a. Wherein the repetition number A is the repetition number determined according to the coverage enhancement level or the repetition number configured by the higher layer signaling or the preset repetition number. The repetition number B is the repetition number indicated by the downlink control information. Therefore, the repetition number B indicated by the downlink control information can be regarded as a fine adjustment of the repetition number a. Of course, it is also the content of the present invention to replace the above-mentioned repetition number with the bundle transmission size.

In some embodiments of the invention, the first downlink control information may include: the distinguishing indication information of the downlink control information format needs to distinguish whether the downlink control information is control information for scheduling the first information or control information for which the downlink control information carries the first information. Methods of differentiation include, but are not limited to: the indication of the display field in the first downlink control information is, for example, 1bit for distinguishing or 2 bits for joint indication of format distinguishing and authorization distinguishing.

In some embodiments of the present invention, different control channel scrambling codes may also be used to distinguish whether the downlink control information is control information for scheduling the first information or whether the downlink control information carries control information for the first information. For example, for the downlink control information carrying the first information, a redesigned Radio Network temporary Identity (Radio Network temporary Identity, RNTI) or an RNTI set is used, and for the downlink control information scheduling the first information, the existing RNTI is used.

Or implicitly determine the content or function of the downlink control information according to the coverage enhancement level or channel quality. For example, the downlink control information corresponding to the coverage enhancement level Y carries (i.e., includes) the first information, and the downlink control information corresponding to the coverage enhancement level X schedules the first information. Typically the number of repetitions required for the coverage enhancement level X is less than the number of repetitions required for the coverage enhancement level Y. For another example, the downlink control information corresponding to the coverage enhancement carries (i.e., includes) the first information, and the downlink control information corresponding to the non-coverage enhancement schedules the first information.

In some embodiments of the invention, the first downlink control information may include: the Random Access Preamble indication information may be a simplified Random Access Preamble identifier (Random Access Preamble identifier, RAPID). The RAPID is used to identify a random access preamble randomly selected by the UE in a random access procedure. The existing LTE protocol supports 64 random access preambles on one PRACH resource, so 6 bits are required for indicating RAPID. In a coverage enhancement scenario, a one-to-one mapping relationship exists between a coverage enhancement level (e.g., the coverage enhancement level is a repetition level or a repetition number) and a random access resource. If the above correspondence is based on one-to-one correspondence of the preamble packet and the coverage enhancement level, the number of bits indicating the RAPID may be reduced. For example, if the number of preambles of three levels is approximately equally divided, one level may have 21 or 22 preambles, and only 5 bits are needed to indicate the preambles. Further, if the number of preambles allocated for a certain level is small, fewer bits may be needed to indicate the preambles. If the number of preambles allocated in a certain level is num _ preamble, the number of bits required by the indication RAPID corresponding to the PRACH group may be:

the parenthesis in the formula is rounded up.

In addition, the base station may implicitly indicate the received random access preamble, and indicate RAPID with no or few bits in the random access response information. For example, the radio network temporary identity of the now scrambled random access response is determined from the time index (subframe number) and the frequency resource index of the random access preamble transmission. The radio network temporary identity may implicitly embody the time index and the frequency resource index. Similarly, if the RNTI is determined according to the index of the random access preamble, the RNTI may implicitly indicate the random access preamble or the number of the random access preamble. For example, assuming that there are 64 RNTIs, each of which corresponds to one random access preamble, the radio network temporary identity of the scrambled random access response may indicate a random access preamble identity. For another example, if there are 32 RNTIs, each of which corresponds to two random access preambles, one bit may be used to further indicate one of the two random access preambles in the random access response message. The RNTI associated with the random access preamble may be configured by either pre-provisioning or signaling. The association of the RNTI and the random access preamble may be predefined or configured by signaling. For example, a set or range of RNTIs is predefined, each of which is associated with a certain random access preamble. As another example, the functional relationship between the RNTI and the random access preamble index may be predefined. I.e. RNTI (function id, f _ id, preamble _ id) or RNTI (function id), where t _ id is an index of PRACH time resources (within one or more radio frames). f _ id is the index of the PRACH frequency resource. preamble _ id is an index of the preamble. Specifically, one functional relationship is RNTI + 1+ t _ id + N × f _ id + M × preamble _ id, where N, M is a constant fixed in advance. For example, N is the index number of time resources, and M is the product of the index number of PRACH frequency resources and the index number of PRACH time resources.

If the time resource is in units of subframes, a radio frame has at most 10 subframes to transmit the preamble, i.e., N equals to 10. If the PRACH time resource is X subframes, there are a maximum of ceil (10/X) time resources to send preambles in a radio frame, where ceil is rounded up, i.e., N is ceil (10/X). If the PRACH time resources are resources within Y radio frames, and the PRACH time resources are in units of X subframes, there are ceil (Y × 10/X) time resources at most for Y radio frames to transmit preambles, i.e., N — ceil (Y × 10/X). For example, in a coverage enhancement scenario, the transmission of the preamble needs to be repeated, so there are fewer random access opportunities in the same time. For example, a subframe is 10ms, and each subframe may have random access resources at most according to the original protocol, that is, 10 random access opportunities; in the coverage enhancement scenario, even if the number of repetitions is 2, there are at most 5 access opportunities. This may reduce the number of random access opportunities, i.e. may reduce the number of RNTIs.

The indexes of the PRACH frequency resources and the number of the indexes of the PRACH frequency resources may be independently numbered for each coverage enhancement level. If the coverage enhancement level 1 has 2 PRACH frequency resources, the indexes are respectively {0, 1}, and the index number of the PRACH frequency resources is 2; the coverage enhancement level 2 has 3 PRACH frequency resources, indexes are {0, 1, 2} respectively, and the number of indexes of the PRACH frequency resources is 3. The indexes of the PRACH frequency resources and the number of the indexes of the PRACH frequency resources may be a plurality of coverage enhancement level joint numbers. If the coverage enhancement level 1 has 2 PRACH frequency resources with indexes {0, 1}, the coverage enhancement level 2 has 3 PRACH frequency resources with indexes {2, 3, 4}, respectively, and the number of indexes of the PRACH frequency resources is 5. For example, the index number of the PRACH frequency resources may be determined independently by the frequency division duplex system and the time division duplex system, or determined according to the index number of the PRACH frequency resources that is the largest in the frequency division duplex system and the time division duplex system. For example, if there are at most F1 PRACH frequency resources in the frequency division duplex system and at most F2 PRACH frequency resources in the time division duplex system, the index number of the PRACH frequency resources is equal to Max (F1, F2), where Max is a maximum function.

In some embodiments of the present invention, the indication information of the random access preamble is used to indicate whether the base station detects the random access preamble. Such as indication information that can indicate the random access preamble through a bitmap. Each bit in the bit string corresponds to an indication of whether the base station received one or more random access preambles. For example, one PRACH resource group includes 16 preambles, and 16 bits may be used to indicate whether the base station detects a random access preamble according to a bitmap indication method, where each bit correspondingly indicates one random access preamble.

It should be noted that, when only the first downlink control information is a scheduling paging message, the first downlink control information may include one or more of an indication of system information update, an indication of a typhoon warning system, and an indication of a commercial mobile warning service. When the first downlink control information schedules the random access response message, one or more random access preamble identifications may be included in the first downlink control information. The number of random access preamble identifiers included in the first downlink control information is known or indicated by signaling, such as indicated in the downlink control information. If the first downlink control information for scheduling the random access response transmission (or paging message transmission) and the second downlink control information for carrying the random access response transmission (or paging message transmission) have the same size, it is necessary to expand bits included in the first downlink control information for scheduling the random access response transmission (or paging message transmission) so that the number of bits included in the first downlink control information for scheduling the random access response transmission (or paging message transmission) is the same as the number of bits included in the second downlink control information for carrying the random access response transmission (or paging message transmission). Bits included in the first downlink control information of the scheduled random access response transmission (or paging message transmission) may be extended to form final first downlink control information. The method of bit spreading includes one or more of:

all or part of the fields of the first downlink control information are repeated, wherein the repetition can be an integer multiple repetition or a non-integer multiple repetition, and in addition, zero padding or padding bits can be added in the first downlink control information. Alternatively, the (whole or part of) content of each of the plurality of first downlink control information is concatenated together to form the final first downlink control information, wherein each first downlink control information is associated with scheduling one message. Different ones of the plurality of first downlink control information may be different UE scheduling messages or the same UE scheduling message. And coding bits in the first downlink control information, and using the coded bits as original bits contained in the final downlink control information. The above codes are Reed-Solomon (Reed-Muller, RM) codes or Reed-Muller (Reed-Solomon, RS) codes.

Of course, the first downlink control information contains a field type independent of the information type scheduled by the first downlink control information. For example, the field type included in the first downlink control information when the first downlink control information schedules the random access response message is the same as the field type included in the first downlink control information when the first downlink control information schedules the paging message. It should be noted that, whether the first downlink control information schedules the first information may be determined implicitly. Such as for coverage enhancement (e.g., repeated transmission) level X, it is determined that the first downlink control information schedules the first information. For coverage enhancement level Y, it is determined that the first downlink control information does not schedule the first information. Typically the number of repetitions required for the coverage enhancement level X is less than the number of repetitions required for the coverage enhancement level Y.

It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the order of acts, as some steps may occur in other orders or concurrently in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.

To facilitate a better implementation of the above-described aspects of embodiments of the present invention, the following also provides relevant means for implementing the above-described aspects.

Referring to fig. 4, a base station 400 according to an embodiment of the present invention includes: an information determination module 401, a sending module 402, wherein,

an information determining module 401, configured to determine first downlink control information, where the first downlink control information includes at least one of the following information: the method comprises the following steps of indicating information of narrow-band resources used for first information transmission, indicating information of a modulation coding base station of the first information transmission, indicating information of frequency hopping of the first information transmission, and indicating information of coverage enhancement transmission of the first information transmission. The first information includes: a random access response message and/or a paging message;

a sending module 402, configured to send the first downlink control information to the UE, and send the first information to the UE according to the first downlink control information.

In some embodiments of the invention, the first downlink control information further comprises at least one of the following information: the first information transmission comprises differentiation indication information of a downlink control information format, authorization differentiation indication information, resource allocation indication information in a narrow band used for the first information transmission, and transmission block size indication information of the first information transmission.

In some embodiments of the invention, the first downlink control information further comprises at least one of the following information: the system information updating indication information, the alarm indication information of the earthquake typhoon alarm system and the alarm indication information of the commercial mobile alarm service.

In some embodiments of the invention, the first downlink control information further comprises: one or more random access preamble indication information corresponding to the random access response message.

In some embodiments of the present invention, a payload size of the first downlink control information is the same as a payload size of second downlink control information, where the second downlink control information carries the first information.

As can be seen from the above description of the embodiments of the present invention, first, the base station determines first downlink control information, where the first downlink control information includes at least one of the following information: indication information of a narrow-band resource used for the first information transmission, modulation coding method indication information of the first information transmission, frequency hopping indication information of the first information transmission, and coverage enhancement transmission indication information of the first information transmission. The first information includes: a random access response message and/or a paging message. And the base station sends the first downlink control information to the UE and sends the first information to the UE according to the first downlink control information. In the embodiment of the present invention, the first downlink control information is used to schedule the first information, and the first downlink control information only includes at least one of the foregoing indication information, so that the first downlink control information has a more simplified structure, and thus, the first downlink control information can be transmitted using fewer resources, so as to improve the resource utilization efficiency of transmitting the first downlink control information.

Referring to fig. 5, a user equipment 500 according to an embodiment of the present invention may include: a receiving module 501, an obtaining module 502, wherein,

a receiving module 501, configured to receive first downlink control information sent by a base station;

an obtaining module 502, configured to obtain at least one of the following information from the downlink control information: indication information of a narrowband resource used for first information transmission, modulation coding user equipment indication information of first information transmission, frequency hopping indication information of the first information transmission, and coverage enhancement transmission indication information of the first information transmission. The first information includes: a random access response message and/or a paging message;

the receiving module 501 is further configured to receive the first information according to the first downlink control information.

In some embodiments of the invention, the first downlink control information further comprises at least one of the following information: the first information transmission method includes the following steps of distinguishing indication information of a downlink control information format, distinguishing indication information authorized by the downlink control information, resource allocation indication information in a narrow band used for the first information transmission, and transmission block size indication information of the first information transmission.

In some embodiments of the invention, the first downlink control information further comprises: one or more random access preamble identification indication information corresponding to the random access response message.

In some embodiments of the present invention, the first information is carried in second downlink control information, and a payload size of the first downlink control information is the same as a payload size of the second downlink control information.

As can be seen from the above description of the embodiments of the present invention, first, the UE receives first downlink control information sent by the base station, and acquires at least one of the following information from the first downlink control information: indication information of a narrow-band resource used for the first information transmission, modulation coding method indication information of the first information transmission, frequency hopping indication information of the first information transmission, and coverage enhancement transmission indication information of the first information transmission. The first information includes: a random access response message and/or a paging message. And the UE receives first information sent by the base station according to the first downlink control information. In the embodiment of the present invention, the first downlink control information is used to schedule the first information, and the first downlink control information only includes at least one of the foregoing indication information, so that the first downlink control information has a more simplified structure, and thus, the first downlink control information can be transmitted using fewer resources, so as to improve the resource utilization efficiency of transmitting the first downlink control information.

It should be noted that, because the contents of information interaction, execution process, and the like between the modules/units of the apparatus are based on the same concept as the method embodiment of the present invention, the technical effect brought by the contents is the same as the method embodiment of the present invention, and specific contents may refer to the description in the foregoing method embodiment of the present invention, and are not described herein again.

An embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores a program, and the program executes some or all of the steps described in the above method embodiments.

Referring to fig. 6, another base station according to an embodiment of the present invention is described, in which a base station 600 includes:

an input device 601, an output device 602, a processor 603 and a memory 604 (wherein the number of processors 603 in the base station 600 may be one or more, one processor is taken as an example in fig. 6). In some embodiments of the present invention, the input device 601, the output device 602, the processor 603 and the memory 604 may be connected by a bus or other means, wherein the connection by the bus is exemplified in fig. 6.

The processor 603 is configured to execute the method for transmitting information implemented by the base station, and specifically, the processor 603 is configured to execute the following steps:

In some embodiments of the present invention, a payload size of the first downlink control information is the same as a payload size of second downlink control information, where the second downlink control information is used for carrying the first information.

Referring to fig. 7, a user equipment 700 according to another embodiment of the present invention is described as follows:

an input device 701, an output device 702, a processor 703 and a memory 704 (wherein the number of processors 703 in the user equipment 700 may be one or more, for example one processor in fig. 7). In some embodiments of the present invention, the input device 701, the output device 702, the processor 703 and the memory 704 may be connected by a bus or other means, wherein the connection by the bus is exemplified in fig. 7.

The processor 703 is configured to execute the method for transmitting information implemented by the ue side, and specifically, the processor 703 is configured to execute the following steps:

receiving first downlink control information sent by a base station;

It should be noted that the above-described embodiments of the apparatus are merely schematic, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. In addition, in the drawings of the embodiment of the apparatus provided by the present invention, the connection relationship between the modules indicates that there is a communication connection between them, and may be specifically implemented as one or more communication buses or signal lines. One of ordinary skill in the art can understand and implement it without inventive effort.

Through the above description of the embodiments, those skilled in the art will clearly understand that the present invention may be implemented by software plus necessary general hardware, and may also be implemented by special hardware including special integrated circuits, special CPUs, special memories, special components and the like. Generally, functions performed by computer programs can be easily implemented by corresponding hardware, and specific hardware structures for implementing the same functions may be various, such as analog circuits, digital circuits, or dedicated circuits. However, the implementation of a software program is a more preferable embodiment for the present invention. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a readable storage medium, such as a floppy disk, a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk of a computer, and includes instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.

In summary, the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the above embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the above embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A method for transmitting information, comprising:

determining first downlink control information, wherein the first downlink control information comprises: indication information of a narrowband resource used for first information transmission and indication information of a modulation coding method of the first information transmission, wherein the first information comprises: a paging message;

sending the first downlink control information to User Equipment (UE), and sending the first information to the UE according to the first downlink control information;

the first downlink control information further comprises transport block size indication information of the first information transmission;

the first downlink control information further includes at least one of the following information: the system information updating indication information, the alarm indication information of the earthquake typhoon alarm system and the alarm indication information of the commercial mobile alarm service.

2. A method for transmitting information, comprising:

receiving first downlink control information sent by a base station;

acquiring the following information from the downlink control information: indication information of a narrowband resource used for first information transmission and indication information of a modulation coding method of the first information transmission, wherein the first information comprises: a paging message;

receiving the first information according to the first downlink control information;

3. A communications apparatus, comprising:

an information determining module, configured to determine first downlink control information, where the first downlink control information includes: indication information of a narrowband resource used for first information transmission and indication information of a modulation coding base station of the first information transmission, wherein the first information comprises: a paging message;

a sending module, configured to send the first downlink control information to a user equipment UE, and send the first information to the UE according to the first downlink control information;

4. A communications apparatus, comprising:

an obtaining module, configured to obtain, from the downlink control information: indication information of a narrowband resource used for first information transmission and indication information of modulation coding user equipment of the first information transmission, wherein the first information comprises: a paging message;

the receiving module is further configured to receive the first information according to the first downlink control information;

the first downlink control information further includes: transport block size indication information for the first information transmission;

5. A computer storage medium, characterized in that it stores a program which, when run on a computer, causes the program to perform the method of claim 1 or 2.

6. A communications apparatus, comprising: a processor and a memory; the memory is configured to store one or more computer programs that, when executed by the communication apparatus, are executed by the processor to cause the communication apparatus to perform the method of claim 1.

7. A communications apparatus, comprising: a processor and a memory; the memory for storing one or more computer programs which, when executed by the communication apparatus, are executable by the processor to cause the communication apparatus to perform the method of claim 2.