WO2014075458A1

WO2014075458A1 - Method, terminal device, and base station for determining working narrow-band

Info

Publication number: WO2014075458A1
Application number: PCT/CN2013/079359
Authority: WO
Inventors: 张向东; 张兴炜
Original assignee: 华为技术有限公司
Priority date: 2012-11-16
Filing date: 2013-07-15
Publication date: 2014-05-22
Also published as: CN103825670A; CN103825670B

Abstract

Embodiments of the present invention provide a method, terminal device, and base station for determining a working narrow-band. The method comprises: before accessing a network, a terminal device receiving narrow-band information sent by a base station, the narrow-band information carrying a position of each narrow-band divided by the base station from a system bandwidth; the terminal device performing measurement on each narrow-band according to the position of each narrow-band, to obtain measurement information of each narrow-band; and the terminal device sending, according to the measurement information of each narrow-band, narrow-band indication information to the base station during a random access process, so that the base station determines, according to the narrow-band indication information, a narrow-band used by the terminal device. The technical solution of the present invention solves the problem of determining a narrow-band position where the narrow-band terminal works.

Description

Working narrow band determination method, terminal device and base station The present application claims priority to Chinese patent application filed on November 16, 2012 by the Chinese Patent Office, application number 201210464418.9, and the invention titled "working narrow band determination method, terminal equipment and base station" The entire contents of which are incorporated herein by reference. Technical field

The present invention relates to communication technologies, and in particular, to a working narrowband determining method, a terminal device, and a base station. Background technique

Machine to Machine (M2M) communication refers to communication between two or more entities that do not require any necessary human intervention. Due to the good coverage of the Global System for Mobile Communications (GSM) and General Packet Radio Service (GPRS) networks and the low price of GSM/GPRS terminals, most M2M Application providers tend to offer M2M services using GSM/GPRS terminals. With the large-scale deployment of the Long Term Evolution (LTE) network, operators hope to reduce the number of access networks maintained, such as no longer providing GSM/GRPS network services to reduce the maintenance of the entire network. cost. Therefore, it is necessary to implement the migration of M2M applications from GSM/GRPS networks to LTE networks. In order to move the M2M application from the GSM/GRPS network to the LTE network, it is necessary to provide an LTE network-based terminal that can be even lower than the GSM/GPRS terminal.

The prior art provides several methods for reducing the cost of an LTE terminal, such as reducing the working bandwidth supported by the LTE terminal, reducing the peak rate of the LTE terminal, using half-frequency division multiplexing (Half-FDD), using a single receiving chain, and the tube. The downlink transmission mode is reduced, and the uplink transmission power of the LTE terminal is lowered. In the method of reducing the working bandwidth supported by the LTE terminal, the eNB can perform the access and data transmission by the LTE terminal by dividing one or more narrowbands in the entire system bandwidth. It is called a narrowband terminal. In the following behavior example, a narrowband terminal can only receive downlink control and data in a narrower frequency band. Then, in practical applications, it is necessary to determine the position of the working narrow band used by the narrowband terminal in a plurality of narrow bands divided by the system, that is, which narrow band is specifically used by the narrowband terminal. Summary of the invention

Embodiments of the present invention provide a working narrowband determining method, a terminal device, and a base station, which are used to determine a narrowband position of a narrowband terminal.

The first aspect provides a method for determining a working narrow band, including:

Before receiving the network, the terminal device receives narrowband information sent by the base station in the network, where the narrowband information carries the location of each narrowband that is divided by the base station from the system bandwidth; the terminal device according to each narrowband Position, measure on each narrow band, and obtain measurement information for each narrow band;

The terminal device sends narrowband indication information to the base station in the random access procedure according to the measurement information of each narrowband, so that the base station determines the working narrowband used by the terminal device according to the narrowband indication information.

In a first possible implementation manner of the first aspect, the receiving, by the terminal device, the narrowband information sent by the base station in the network, before the accessing the network, includes: receiving, by the terminal device, before receiving the network, The high layer signaling broadcast by the base station, where the high layer signaling includes the narrowband information.

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 measurement information of each narrowband includes a CQI and/or a pre-channel quality indicator of each narrowband The coding matrix indicates PMI information.

With the second possible implementation of the first aspect, in a third possible implementation manner of the first aspect, the terminal device sends, according to the measurement information of each narrowband, to the base station in a random access procedure. The narrowband indication information includes: the terminal device sends a sequence code to the base station, and the frequency domain resource used by the column code indicates the narrowband indication information on a preset initial working narrowband, where the initial working narrowband is a narrowband of all narrowbands .

With the second possible implementation of the first aspect, in a fourth possible implementation manner of the first aspect, the terminal device sends, according to the measurement information of each narrowband, to the base station in a random access procedure. The narrowband indication information includes: the terminal device sends a sequence code to the base station; the terminal device receives a random access response RAR returned by the base station for the sequence code; the terminal device sends a message 3 to the base station, The message 3 carries the narrowband indication information.

Combining the first aspect or the second possible implementation of the first aspect or the third aspect of the first aspect A possible implementation manner, or a fourth possible implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect, the method further includes: the terminal device according to a preset CQI feedback mode, And transmitting, to the base station, a narrowband CQI corresponding to the CQI feedback mode.

With reference to the fifth possible implementation manner of the foregoing aspect, in a sixth possible implementation manner of the first aspect, the terminal device sends, by using the preset CQI feedback mode, the CQI feedback mode to the base station The corresponding narrowband CQI includes:

If the CQI feedback mode is a non-periodic user-selected narrowband CQI mode, the terminal device calculates a first CQI that reflects an average quality of the M selected subbands according to a mapping relationship between the system bandwidth and the number of subbands, and according to The first CQI and the preset standard narrowband CQI obtain a first differential CQI, and send the first differential CQI to the base station, where the standard narrowband is one of all narrowbands;

If the CQI feedback mode is a non-periodic high-level configuration of a narrowband CQI mode, the terminal device calculates a second CQI of each subband according to a mapping relationship between the system bandwidth and the number of subbands, and according to the second CQI Presetting a standard narrowband CQI, obtaining a second differential CQI, and transmitting the second differential CQI to the base station;

If the CQI feedback mode is a periodic user-selected narrowband CQI mode, the terminal device calculates a third CQI that determines a selected subband in each bandwidth portion according to a mapping relationship between the system bandwidth and the number of subbands and the bandwidth portion. Transmitting the third CQI to the base station;

If the CQI feedback mode is a non-periodic wideband CQI mode or a periodic wideband CQI mode, the second aspect provides a working narrowband determination method, including:

Before the terminal device accesses the network where the base station is located, the base station sends the narrowband information to the terminal device, where the narrowband information carries the location of each narrowband that is divided by the base station from the system bandwidth, so that the terminal device Obtaining measurement information for each narrow band;

Receiving, by the base station, narrowband indication information that is sent by the terminal device according to measurement information of each narrowband in a random access procedure;

The base station determines, according to the narrowband indication information, a working narrowband used by the terminal device. In a first possible implementation manner of the second aspect, the sending, by the base station, the narrowband information to the terminal device before the terminal device accesses the network where the base station is located, including: the base station accessing the terminal device Before the network, the high layer signaling is broadcast to the terminal device, and the high layer signaling includes the narrowband information. 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 measurement information of each narrowband includes a CQI and/or a pre-channel quality indicator of each narrowband The coding matrix indicates PMI information.

With reference to the second possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, the receiving, by the base station, the terminal device, in the random access process, according to the measurement information of each narrowband The narrowband indication information includes: the base station receiving the sequence code sent by the terminal device, acquiring a preset by using an index of the sequence code, a time domain resource used by sending the sequence code, or a frequency domain resource used by sending the sequence code. The narrow band of the initial working narrow band indicates information, and the initial working narrow band is a narrow band of all narrow bands.

With reference to the second possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the receiving, by the base station, the terminal device, according to the measurement information of each narrowband, is sent in a random access process. The narrowband indication information includes: the base station receives a sequence code sent by the terminal device; the base station sends a random access response RAR for the sequence code to the terminal device; the base station receives a message sent by the terminal device 3. The message 3 carries the narrowband indication information.

Combining the second aspect or the first possible implementation of the second aspect or the second possible implementation of the second aspect or the third possible implementation of the second aspect or the fourth possible implementation of the second aspect In a fifth possible implementation manner of the second aspect, the method further includes: receiving, by the base station, a narrowband CQI that is sent by the terminal device and corresponding to a preset CQI feedback mode.

With reference to the fifth possible implementation manner of the second aspect, in a sixth possible implementation manner of the second aspect, the receiving, by the base station, the narrowband CQI that is sent by the terminal device and corresponding to the preset CQI feedback mode includes:

If the CQI feedback mode is a non-periodic user-selected narrowband CQI mode, the base station receives the first differential CQI sent by the terminal device, where the terminal device according to the mapping relationship between the system bandwidth and the number of subbands, Calculating a first CQI that reflects an average quality of the M selected subbands, and obtaining the first differential CQI according to a first CQI and a preset standard narrowband CQI, the standard narrowband being one of all narrowbands;

If the CQI feedback mode is a non-periodic high-level configuration of a narrowband CQI mode, the base station receives a second differential CQI sent by the terminal device, where the terminal device according to a mapping relationship between a system bandwidth and a number of subbands, Calculating a second CQI for each subband, and according to the second CQI Obtaining the second differential CQI with a preset standard narrowband CQI;

If the CQI feedback mode is a user-selected narrowband CQI mode, the base station receives a third CQI sent by the terminal device, where the terminal device maps the number of subbands and the bandwidth portion according to the system bandwidth. Calculating the third CQI of the selected subband in each bandwidth portion of the response;

If the CQI feedback mode is a non-periodic wideband CQI mode or a periodic wideband CQI mode, the base station receives the standard narrowband CQI sent by the terminal device.

The third aspect provides a terminal device, including:

a receiving module, configured to receive, before the terminal device accesses the network, narrowband information sent by the base station in the network, where the narrowband information carries a location of each narrowband that is divided by the base station from a system bandwidth;

a measuring module, configured to perform measurement on each narrow band according to the position of each narrow band, to obtain measurement information of each narrow band;

And a sending module, configured to send, according to the measurement information of each narrowband, narrowband indication information to the base station in a random access procedure, so that the base station determines, according to the narrowband indication information, a working narrowband used by the terminal device.

In a first possible implementation manner of the third aspect, the receiving module is specifically configured to: before the terminal device accesses the network, receive high layer signaling that is broadcast by the base station, where the high layer signaling includes Narrowband information.

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 measurement information of each narrowband includes a CQI and/or a pre-channel quality indicator for each narrowband The coding matrix indicates PMI information.

With the second possible implementation of the third aspect, in a third possible implementation manner of the third aspect, the sending module is specifically configured to send a sequence code to the base station, and use the sequence frequency domain resource indication The narrowband indication information of the preset initial working narrowband, the initial working narrowband being a narrowband of all narrowbands.

With the second possible implementation of the third aspect, in a fourth possible implementation manner of the third aspect, the receiving module is further configured to receive a random access response RAR that is returned by the base station for the sequence code; The sending module is specifically configured to send the sequence code to the base station, and send a message 3 to the base station after the receiving module receives the RAR, where the message 3 carries The narrow band indicates information.

Combining the third aspect or the first possible implementation of the third aspect or the second possible implementation of the third aspect or the third possible implementation of the third aspect or the fourth possible implementation of the third aspect In a fifth possible implementation manner of the third aspect, the sending module is further configured to send, according to a preset CQI feedback mode, a narrowband CQI corresponding to the CQI feedback mode to the base station.

With the fifth possible implementation of the third aspect, in a sixth possible implementation manner of the third aspect, the sending module is configured to send, to the base station, the CQI according to a preset CQI feedback mode. The narrowband CQI corresponding to the feedback mode includes:

The sending module is specifically configured to: when a non-periodic user selects a narrowband CQI mode, calculate a first CQI that reflects an average quality of the M selected subbands according to a mapping relationship between the system bandwidth and the number of subbands, and according to the The first CQI and the preset standard narrowband CQI obtain a first differential CQI, and send the first differential CQI to the base station, where the standard narrowband is one of all narrowbands, wherein the standard narrowband Is one of all narrowbands; or

The sending module is specifically configured to calculate a second CQI of each subband according to a mapping relationship between a system bandwidth and a number of subbands when the CQI feedback mode is a non-periodic high-level configuration of a narrowband CQI mode, and according to the a second CQI and a preset standard narrowband CQI, obtaining a second differential CQI, and transmitting the second differential CQI to the base station; or

The sending module is specifically configured to: when the CQI feedback mode is a user-selected narrowband CQI mode, calculate a selected subband in each bandwidth portion according to a mapping relationship between a system bandwidth and a number of subbands and a bandwidth portion. a third CQI, and transmitting the third CQI to the base station; or

The sending module is specifically configured to send the standard narrowband CQI to the base station when the CQI feedback mode is a non-periodic wideband CQI mode or a periodic wideband CQI mode.

A fourth aspect provides a base station, including:

a sending module, configured to send, to the terminal device, narrowband information before the terminal device accesses the network where the base station is located, where the narrowband information carries a location of each narrowband that is divided by the base station from a system bandwidth, so that The terminal device obtains measurement information of each narrowband;

a receiving module, configured to receive narrowband indication information that is sent by the terminal device according to measurement information of each narrowband in a random access process;

a determining module, configured to determine, according to the narrowband indication information, a work used by the terminal device Make a narrow band.

In a first possible implementation manner of the fourth aspect, the sending module is specifically configured to: before the terminal device accesses the network, broadcast high layer signaling to the terminal device, where the high layer signaling includes Narrowband information.

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 measurement information of each narrowband includes a CQI and/or a pre-channel quality indicator of each narrowband The coding matrix indicates PMI information.

With the second possible implementation of the fourth aspect, in a third possible implementation manner of the fourth aspect, the receiving module is specifically configured to receive a sequence code sent by the terminal device, and use a frequency domain of the pass code The resource obtains the narrowband indication information of a preset initial working narrowband, and the initial working narrowband is a narrowband of all narrowbands.

With the second possible implementation of the fourth aspect, in a fourth possible implementation manner of the fourth aspect, the receiving module is specifically configured to receive a sequence code sent by the terminal device, and in the sending module After receiving the random access response RAR for the sequence code, the terminal device receives the message 3 sent by the terminal device, where the message 3 carries the narrowband indication information, and the first aspect or the first aspect of the fourth aspect A possible implementation manner, or a second possible implementation manner of the fourth aspect, or a third possible implementation manner of the fourth aspect, or a fourth possible implementation manner of the fourth aspect, In a possible implementation manner, the receiving module is further configured to receive a narrowband CQI that is sent by the terminal device and that corresponds to a preset CQI feedback mode.

With reference to the fifth possible implementation manner of the foregoing aspect, in a sixth possible implementation manner of the fourth aspect, the receiving module is configured to receive a narrowband that is sent by the terminal device and that corresponds to a preset CQI feedback mode. CQI includes:

The receiving module is specifically configured to: when the CQI feedback mode is a non-periodic user selected narrowband CQI mode, receive a first differential CQI sent by the terminal device, where the terminal device uses a system bandwidth and a subband according to a system bandwidth a mapping relationship between the numbers, calculating a first CQI that reflects an average quality of the M selected subbands, and obtaining the first differential CQI according to a first CQI and a preset standard narrowband CQI, wherein the standard narrowband is in all narrowbands One; or

The receiving module is configured to receive a second differential CQI sent by the terminal device when the CQI feedback mode is a non-periodic high-level configuration of a narrowband CQI mode, where the terminal The device calculates a second CQI of each subband according to a mapping relationship between the system bandwidth and the number of subbands, and obtains the second differential CQI according to the second CQI and a preset standard narrowband CQI; or the receiving module is specific The third CQI sent by the terminal device is received when the CQI feedback mode is a user-selected narrowband CQI mode, where the terminal device maps the number of subbands and the bandwidth portion according to the system bandwidth. Calculating the third CQI of the selected subband in each bandwidth portion of the reaction; or

The receiving module is specifically configured to receive the CQI of the standard narrowband sent by the terminal device when the CQI feedback mode is a non-periodic wideband CQI mode or a periodic wideband CQI mode.

The working narrowband determining method, the terminal device and the base station provided by the embodiment of the present invention, the base station will determine the position of each narrow band from the system bandwidth, and the terminal device performs measurement on each narrow band according to the position of each narrow band, and obtains The measurement information of each narrowband is then sent to the base station according to the measurement information of each narrowband, so that the base station determines the working narrowband used by the terminal device according to the narrowband indication information, that is, determines the location of the working narrowband used by the terminal device, and solves the problem. The problem of determining the location of the narrow band of the terminal device is determined. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art description will be briefly described below, and obviously, the following description will be described below. The drawings in the drawings are some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any inventive labor.

1 is a flowchart of a method for determining a working narrowband according to an embodiment of the present invention; FIG. 2 is a schematic diagram of dividing a narrowband within a system bandwidth according to an embodiment of the present invention; FIG. 3 is another working manner provided by an embodiment of the present invention. A flowchart of a method for determining a narrowband; FIG. 4 is a schematic structural diagram of a terminal device according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of another terminal device according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of a base station according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of another base station according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the following will be combined BRIEF DESCRIPTION OF THE DRAWINGS The technical solutions in the embodiments of the present invention are clearly and completely described in the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

FIG. 1 is a flowchart of a method for determining a working narrow band according to an embodiment of the present invention. As shown in FIG. 1, the method in this embodiment includes:

Step 101: Before accessing the network, the terminal device receives narrowband information sent by the base station in the network, where the narrowband information carries the location of each narrowband that is divided by the base station from the system bandwidth.

Step 102: The terminal device performs measurement on each narrow band according to the position of each narrow band, and obtains measurement information of each narrow band.

Step 103: The terminal device sends the narrowband indication information to the base station in the random access procedure according to the measurement information of each narrowband, so that the base station determines the working narrowband used by the terminal device according to the narrowband indication information.

In this embodiment, the terminal device refers to a terminal device in an LTE system. In order to meet various requirements for reducing the implementation cost of the LTE-based terminal device, such as moving the M2M application from the GSM or GPRS network to the LTE network, the embodiment reduces the implementation cost of the terminal device by reducing the working bandwidth supported by the terminal device. . Reducing the working bandwidth supported by the terminal device is to provide support for narrowband terminals in the existing broadband network system. In order to be able to support narrowband terminals in a wideband system, the base station needs to divide one or more narrowbands throughout the system bandwidth for narrowband terminals to access and transmit data. A case where the base station divides a narrow band within the entire system bandwidth is shown in Fig. 2. The entire vertical axis represents the system bandwidth, the horizontal axis represents time, and the diagonally-lined rectangular bar represents the divided narrow band.

In practical applications, the technology that reduces the cost of the terminal equipment, such as reducing the working bandwidth, will cause loss of the downlink coverage of the system. At the same time, for the terminal equipment in a special environment such as the basement, the penetration loss of the uplink and the downlink is higher. Large, for example, generally need to consider 20dB penetration loss, the system's up and down coverage is lost. For these scenarios, if the terminal device is a narrowband terminal, then the narrowband used by the terminal device is clearly known, and the coverage enhancement technology can be used on the corresponding narrowband, thereby increasing the coverage of the terminal device by the system. Therefore, it becomes more urgent to determine the narrow band used by the terminal device.

In this embodiment, in order to determine which narrowband the terminal device is working on, the base station divides one or more narrowbands within the system bandwidth, and the terminal device is in the network where the access base station is located. Before, the position of each narrow band is transmitted to the terminal device through the narrowband information. In this way, after receiving the narrowband information sent by the base station, the terminal device can learn the location of each narrowband that is divided by the base station from the system bandwidth, and further determine information such as the number of narrowbands that the base station divides from the system bandwidth. Wherein, the position of each narrow band can be represented by the frequency band of each narrow band. In addition, the base station can also identify the narrowband that is divided, and then use the identifier of each narrowband to indicate the location of each narrowband.

After the terminal device knows the position of each narrow band, measurements are made on each narrow band based on the position of each narrow band, thereby obtaining measurement information for each narrow band. The narrowband measurement information refers to a performance indicator that characterizes the signal quality of the terminal device when communicating on the narrowband, or a desired precoding indication information. For example, the narrowband measurement information may include a narrowband channel quality indicator (Channel Quality Indicator). Indicates (Precoding Matrix Indicator, 筒) information, etc. for CQI) and/or precoding matrix.

Then, the terminal device generates narrowband indication information according to the measurement information of each narrowband, and sends the narrowband indication information to the base station in the random access procedure, so that the base station determines the working narrowband used by the terminal device according to the narrowband indication information. The terminal device reports the narrowband indication information to the base station by using some messages or resources in the random access process. The terminal device does not have a corresponding channel to report the information to the base station.

In this embodiment, the base station will divide the position of each narrowband from the system bandwidth, and the terminal device performs measurement on each narrowband according to the position of each narrowband, obtains measurement information of each narrowband, and then according to the narrowband. The measurement information is sent to the base station in the random access process, so that the base station determines the working narrowband used by the terminal device according to the narrowband indication information, that is, determines the location of the working narrowband used by the terminal device, and solves the problem of determining the working of the terminal device. The problem of the location of the narrow band.

In an optional implementation, an implementation manner of step 101 includes: receiving, by the terminal device, high layer signaling broadcast by the base station before accessing the network, where the high layer signaling includes the narrowband information.

Optionally, before receiving the network, the receiving, by the terminal device, the high-level signaling that is broadcast by the base station includes: receiving, by the terminal device, a physical broadcast channel (Physical Broadcast Channel, called a PBCH) broadcasted by the base station before accessing the network, that is, the PBCH It carries the location of each narrowband that the base station demarcates from the system bandwidth. Or, before receiving the network, the receiving, by the terminal device, the high-level signaling that is broadcast by the base station, includes: receiving, by the terminal device, a system message broadcast by the base station, that is, the system message carries each of the base stations that are divided by the system bandwidth. The location of the narrow band. In an optional implementation, an implementation manner of step 103 includes: the terminal device sends a sequence code to the base station, uses an index of the sequence code, sends a time domain resource used by the sequence code, or sends the sequence code to use The frequency domain resource indicates the narrowband indication information of the preset initial working narrow band. Specifically, the terminal device and the base station pre-agreed an initial working narrowband, and the terminal device initiates a random access procedure to the base station by using the initial working narrowband, and adopts a random access resource in the random access process, such as a sequence code, a time domain resource, or The frequency domain resource carries the narrowband indication information. For example, the terminal device may use the random access resource such as an index of the sequence code, an ID of a time domain resource that sends the sequence code, or an ID of a frequency domain resource that sends the sequence code to indicate the narrowband indication information.

Optionally, the amount of information that can be carried by the foregoing random access resource is limited. In an implementation manner that uses the random access resource to indicate the narrowband indication information, the terminal device may pre-agreed with the base station an initial working narrowband, and the narrowband indication information. The information about the PMI used by the base station may be expected when the terminal device works on the initial working narrowband. The PMI information is the initial working narrowband PMI information, where the initial working narrowband is all narrowbands that the base station divides from the system bandwidth. a narrow band. That is, the terminal device may display, by using an index of the sequence code, an ID of a time domain resource that sends the sequence code, or an ID of a frequency domain resource that sends the sequence code, to indicate that the terminal device works in the The PMI information of the initial working narrowband when initially working in the narrowband (ie, the PMI information that the base station uses when the terminal device operates on the initial working narrowband).

In this embodiment, after receiving the sequence code sent by the terminal device, the base station may use the PMI information used by the base station when the terminal device sent by the sequence device works on the initial working narrowband, and then use the initial working narrowband. The PMI information is in communication with the terminal.

In an optional implementation manner, another implementation manner of step 103 includes: the terminal device sends a sequence code to the base station; the terminal device receives a random access response (RAR) returned by the base station according to the sequence code; and the terminal device sends a message to the base station. 3. The message 3 carries narrowband indication information. Specifically, the terminal device and the base station pre-agreed an initial dedicated narrowband, and the terminal device initiates a random access procedure to the base station by using the initial dedicated narrowband, and indicates the narrowband indication information by using a message 3 in the random access procedure.

Optionally, in the implementation manner that the message 3 carries a narrowband indication information, the narrowband indication information may include: a location of at least one narrowband of all narrowbands and at least one narrowband. CQI and/or PMI for each narrow band. For example, the needle For all narrowbands in the entire system bandwidth, the terminal equipment can sort according to the CQI and/or PMI of each narrowband, and then feed back to the base station all or part of the narrowband position and all or part of the narrowband CQI and/or fed back through the message 3. Or PMI.

In this implementation manner, after receiving the message 3 sent by the terminal device, the base station obtains, from the message 3, the location of all or part of the narrowband fed back by the terminal device and all or part of the narrowband CQI and/or PMI fed back, and then according to the terminal. The narrowband CQI and/or PMI fed back by the device selects one of the narrowbands fed back from the terminal device as the working narrowband used by the terminal device. Further, after determining the working narrowband used by the terminal device, the base station needs to send the determined location of the working narrowband used by the terminal device to the terminal device, so that the terminal device learns the working narrowband used, and subsequently uses the working narrowband to communicate. .

It is explained here that the amount of information that can be carried based on the message 3 is large, so the terminal device can use the CQI as the measurement information of each narrowband, or use the PMI as the measurement information of each narrowband, and can also use the CQI and the PMI at the same time. Measurement information for each narrow band.

Optionally, in the implementation manner that the narrowband indication information is carried by the message 3, the narrowband indication information may also be a location of a narrowband where the terminal device requests to work, and a narrowband CQI and/or PML that the terminal device requests to work in.

It can be seen that, by initiating a random access procedure to the base station, the terminal device sends the narrowband indication information to the base station by using the random access resource or the message 3 in the random access procedure, so that the base station can determine the narrowband used by the terminal device, which is flexible. Timely and easy to implement advantages. The advantage here is that the narrowband of the terminal equipment can be determined before the access is completed, without waiting for the measurement to be completed, then the measurement, reporting and narrowband selection.

In the existing CQI feedback mechanism, the base station requires the terminal device to feed back a wideband CQI or a wideband CQI based differential CQI. When the terminal device operates in a narrow band, the terminal device has no way to obtain a wideband CQI or a wideband CQI based differential CQI. That is to say, enabling the terminal device operating in the narrow band to successfully feed back the CQI to the base station is another problem that needs to be solved. Based on this, the working narrowband determining method provided by the embodiment further includes: the terminal device sends a narrowband CQI corresponding to the CQI feedback mode to the base station according to the preset CQI feedback mode, so as to solve the problem that the terminal device working in the narrowband feeds back the CQI to the base station. The problem.

Specifically, in order to adapt to the existing CQI feedback mechanism, the CQI feedback mode of the embodiment also includes: a non-periodic user selected narrowband CQI mode (UE selected subband CQI mode), and an aperiodic high-level configuration narrowband CQI mode ( Higher layer-configured subband Mode) and aperiodic wideband CQI mode, as well as periodic user-selected narrowband CQI mode and periodic wideband CQI mode. In order to adapt to the existing CQI feedback mechanism as much as possible, in this embodiment, the terminal device and the base station pre-arrange a standard narrowband from all narrowbands, and replace the so-called broadband in the existing CQI feedback mechanism with the standard narrowband. For example, the terminal device and the base station can reserve a narrowband with the largest or smallest ID as a standard narrowband. For another example, the base station can determine a standard narrowband and configure the standard narrowband to the terminal device through high layer signaling, such as system messages, or through CQI configuration signaling. For example, the terminal device can select a narrowband as the standard narrowband and report the determined standard narrowband to the base station, for example, can be reported to the base station along with the CQI feedback.

Based on the determination of the standard narrowband, the foregoing terminal device sends the narrowband CQI corresponding to the CQI feedback mode to the base station according to the preset CQI feedback mode, including:

If the CQI feedback mode is a non-periodic user-selected narrowband CQI mode, the terminal device calculates a first CQI that reflects an average quality of the M selected subbands according to a mapping relationship between the system bandwidth and the number of subbands, and according to the first The CQI and the preset standard narrowband CQI obtain a first differential CQI, and send the first differential CQI to the base station.

If the CQI feedback mode is a non-periodic high-level configuration of the narrowband CQI mode, the terminal device calculates a second CQI of each subband according to a mapping relationship between the system bandwidth and the number of subbands, and according to the second CQI and the preset standard. The narrowband CQI obtains a second differential CQI and transmits a second differential CQI to the base station.

If the CQI feedback mode is a narrowband CQI mode selected by the user of the period, the terminal device calculates a response of the selected subband in each bandwidth portion according to a mapping relationship between the system bandwidth and the number of subbands and a bandwidth part. Three CQIs, and the third CQI is sent to the base station. If the CQI feedback mode is a non-periodic or periodic wideband CQI mode, the terminal device transmits the standard narrowband CQI to the base station.

The mapping between system bandwidth and number of subbands will vary from system to system. Table 1 shows the mapping relationship between the system bandwidth and the subband size and the number of subbands for the aperiodic CQI feedback mode in the LTE system.

Table 1

System Bandwidth Subband Size

Subband number M (RBs) 6 - 7 NA NA

8 - 10 2 1

11 - 26 2 3

27 - 63 3 5

64 - 110 4 6 Optionally, the size of the narrowband divided by the base station may be different from the size of each sub-band corresponding to the corresponding system bandwidth in the prior art, which causes trouble for the terminal equipment working in the narrowband. It also brings certain difficulties to the base station to explain the CQI feedback from the terminal device. Based on this, this embodiment provides a solution, that is, the size of the subband corresponding to the system bandwidth is the same as the size of each narrowband divided by the base station, or the size of the subband corresponding to the system bandwidth is determined by the base station. A multiple or a submultiple of the size of a narrow band. For example, if the size of the narrowband divided by the base station from the system bandwidth is 6 RBs, the size of the subband in the system bandwidth is also 6 RBs. In addition, the base station may also divide the narrowband of the same size from the system bandwidth according to the size of the subband in the system bandwidth. For example, if the size of the subband in the system bandwidth is 4 RBs, the size of the narrowband divided by the base station is also 4 RBs.

Based on this, the base station can modify the mapping relationship between the existing system bandwidth and the sub-band size. Taking the size of the narrowband as 6 RBs as an example, as shown in Table 2, a modified mapping relationship between the system bandwidth and the subband size of the narrowband CQI feedback mode for the aperiodic high-level configuration is shown in Table 3. The mapping relationship between a system bandwidth of the periodic user-selected narrowband CQI feedback mode and the subband size and the selected number of subbands M. Table 4 shows the relationship between the bandwidth of a narrowband CQI mode selected for a periodic user and the size of the subband and the size of the bandwidth.

Table 2

table 3

It can be seen from Table 2, Table 3 and Table 4 above that for the CQI feedback mode of the narrowband terminal, the base station uniformly modifies the subband size in all system bandwidths to 6 RBs or about RBs of 6. Among them, the narrowband size supported by the terminal device is 6 RBs, but an example value is not limited thereto.

It can be seen from the above that the working bandwidth determining method provided by the embodiment not only solves the problem of determining the narrowband used by the terminal device, but also solves the problem that the terminal device working in the narrowband feeds back the CQI to the base station, so that the terminal device can work in the narrowband. In addition, it lays the foundation for the M2M application to move from the GMS or GPRS network to the LTE network, which is beneficial to reducing the number of access networks maintained by the operator to reduce the maintenance cost of the entire network.

FIG. 3 is a flowchart of another method for determining a working narrowband according to an embodiment of the present invention. As shown in FIG. 3, the method in this embodiment includes:

Step 301: The base station sends the narrowband information to the terminal device before the terminal device accesses the network where the base station is located, where the narrowband information carries the location of each narrowband that is divided by the base station from the system bandwidth, so that the terminal device obtains each narrowband. Measurement information.

Step 302: The base station receives the measurement information of the narrowband according to each narrowband in the random access process. Narrowband indication information sent in.

Step 303: The base station determines, according to the narrowband indication information, a working narrowband used by the terminal device. In this embodiment, the terminal device refers to a terminal device in an LTE system. In order to meet various requirements for reducing the implementation cost of the LTE-based terminal device, such as moving the M2M application from the GSM or GPRS network to the LTE network, the embodiment reduces the implementation cost of the terminal device by reducing the working bandwidth supported by the terminal device. . Reducing the working bandwidth supported by the terminal device is to provide support for narrowband terminals in the existing broadband network system. In order to be able to support narrowband terminals in a wideband system, the base station needs to divide one or more narrowbands throughout the system bandwidth for narrowband terminals to access and transmit data. A case where the base station divides a narrow band within the entire system bandwidth is shown in FIG. 2.

In practical applications, the technology that reduces the cost of the terminal equipment, such as reducing the working bandwidth, will cause loss of downlink coverage. At the same time, for the terminal equipment in a special environment such as the basement, the penetration loss of the uplink and the downlink is large. For example, it is generally necessary to consider a penetration loss of 20 dB, so it is necessary to adopt a corresponding coverage enhancement technology to ensure that the coverage of the terminal device can be the same as that of the conventional terminal device. For these scenarios, if the terminal device is a narrowband terminal, then the narrowband used by the terminal device is clearly known, and coverage enhancement technology can be used on the corresponding narrowband, thereby increasing the coverage of the terminal device by the system. Therefore, it is becoming more urgent to determine the narrow band used by the terminal device.

In this embodiment, in order to determine which narrowband the terminal device is working on, after the base station divides one or more narrowbands within the system bandwidth, the narrowband is passed through the narrowband before the terminal device accesses the network where the base station is located. The information is sent to the terminal device. In this way, after receiving the narrowband information sent by the base station, the terminal device can learn the location of each narrowband that is divided by the base station from the system bandwidth, and further determine the number of narrowbands that the base station divides from the system bandwidth. Wherein, the position of each narrow band can be represented by the frequency band of each narrow band. In addition, the base station can also identify the narrowband that is divided, and then use the identification of each narrowband to indicate the location of each narrowband.

After the terminal device knows the position of each narrow band, measurement is performed on each narrow band according to the position of each narrow band, thereby obtaining measurement information of each narrow band. The narrowband measurement information may include narrowband CQI and/or PMI information and the like. Then, the terminal device generates narrowband indication information according to the measurement information of each narrowband, and sends the narrowband indication information to the base station in the random access procedure. The base station receives the narrowband indication information sent by the terminal device in the random access process, and according to the narrowband indication The information determines the narrow band of work used by the terminal device, thereby solving the problem of determining the narrow band used by the terminal device.

In an optional implementation, an implementation manner of the step 301 includes: the base station broadcasts high layer signaling to the terminal device before the terminal device accesses the network where the base station is located, where the high layer signaling includes the narrowband information.

Optionally, the base station broadcasts the high layer signaling to the terminal device before the terminal device accesses the network where the base station is located, where the base station broadcasts the PBCH to the terminal device before the terminal device accesses the network where the base station is located, that is, the PBCH carries the base station slave system bandwidth. The position of each narrow band divided in. Or the base station broadcasts the high layer signaling to the terminal device before the terminal device accesses the network where the base station is located, where the base station broadcasts the system message to the terminal device before the terminal device accesses the network where the base station is located, that is, the system message carries the base station slave system bandwidth. The position of each narrow band divided in.

In an optional implementation manner, an implementation manner of step 302 includes: receiving, by the base station, a sequence code sent by the terminal device, using an index of the sequence code, using the time domain resource of the sending sequence code, or acquiring the frequency domain resource by using the sequence code. A narrowband indication information indicating a preset initial working narrow band. Specifically, the base station and the terminal device pre-agreed an initial working narrowband, and the terminal device may initiate a random access procedure to the base station by using the initial working narrowband, and pass the random access resource in the random access process, for example, a sequence code, a time domain resource. Or the frequency domain resource carries the narrowband indication information. Correspondingly, the base station receives the sequence code sent by the terminal device, and sends the narrowband indication information of the sequence code according to the index of the sequence code. The initial working narrowband is a narrowband of all narrowbands divided by the base station. In this embodiment, the base station can directly determine the preset initial working narrowband as the working narrowband used by the terminal device.

In this embodiment, because the amount of information that the random access resource can carry is limited, the narrowband indication information may include: a PMI that initially operates a narrowband when the terminal device works in an initial working narrowband (ie, when the terminal device works in an initial working narrowband) The PMI information that the base station is expected to use). Based on this, the base station can communicate with the terminal device using the PMI information indicated by the narrowband indication information on the initial working narrowband.

In an optional implementation manner, another implementation manner of step 302 includes: receiving, by the base station, a sequence code sent by the terminal device, the base station sending, to the terminal device, an RAR for the sequence code, where the base station receives the message 3 sent by the terminal device, where the message is received by the terminal device. 3 carries the narrowband indication information.

Optionally, because the amount of information that the message 3 can carry is large, in this embodiment, the narrowband The indication information may include: a location of at least one narrowband of all of the narrowbands and CQI and/or PMI information for each of the at least one narrowband. Here, at least one narrowband may be all or part of a narrowband that the terminal device sorts according to the CQI and/or PMI information of each narrowband and then feeds back to the base station through the message 3.

Based on this, another optional implementation manner of step 303 includes: determining, by the base station, the terminal device from the at least one narrowband according to the location of the at least one narrowband fed back by the terminal device and the CQI and/or PMI information of each narrowband in the at least one narrowband Use a narrow band of work.

Further, the base station determines the terminal device determined by the base station after determining the working narrowband used by the terminal device from the at least one narrowband according to the location of the at least one narrowband fed back by the terminal device and the CQI and/or PMI information of each narrowband in the at least one narrowband The location information of the working narrowband used is sent to the terminal device to let the terminal device know the working narrow band used, and then communicate using the working narrow band.

Based on another implementation manner of the foregoing step 302, optionally, the narrowband indication information may include: a location of the narrowband where the terminal device requests to work, and a narrowband CQI and/or PMI information that the terminal device requests to work on. Based on this, another implementation manner of step 303 includes: determining, by the base station, a narrowband location of the working device and a narrowband CQI and/or PMI information that the terminal device requests to work, determining that the narrowband requested by the terminal device is used by the terminal device. Working narrow band.

As can be seen from the foregoing, the terminal device sends the narrowband indication information to the base station by using the random access resource or the message 3 in the random access procedure, and the base station can send the packet according to the terminal device in the random access process. The narrowband indication information determines the narrow band of work used by the terminal device, which is flexible, timely, and easy to implement.

In this embodiment, in order to solve the problem that the terminal device that operates in the narrowband feeds back the CQI to the base station, the method in this embodiment further includes: the base station receiving the narrowband CQI corresponding to the preset CQI feedback mode sent by the terminal device.

Specifically, the base station receiving the narrowband CQI corresponding to the preset CQI feedback mode sent by the terminal device includes: if the CQI feedback mode is a non-periodic user selected narrowband CQI mode, the base station receives the first differential CQI sent by the terminal device, where The terminal device calculates a first CQI that reflects the average quality of the M selected subbands according to a mapping relationship between the system bandwidth and the number of subbands, and obtains a first differential CQI according to the first CQI and a preset standard narrowband CQI. The standard narrow band is one of all narrow bands.

If the CQI feedback mode is a non-periodic high-level configuration of the narrowband CQI mode, the base station receives the terminal a second differential CQI sent by the terminal device, where the terminal device calculates a second CQI of each subband according to a mapping relationship between the system bandwidth and the number of subbands, and obtains a second CQI according to the second CQI and the preset standard narrowband CQI. Two differential CQI.

If the CQI feedback mode is a narrow-band CQI mode selected by the user, the base station receives the third CQI sent by the terminal device, where the terminal device calculates the response in each bandwidth portion according to the mapping relationship between the system bandwidth and the number of sub-bands and the bandwidth portion. The third CQI of the subband is selected.

If the CQI feedback mode is an aperiodic or periodic wideband CQI mode, the base station receives the standard narrowband CQI transmitted by the terminal device.

Optionally, each narrowband has the same size as the subband corresponding to the system bandwidth. Alternatively, the size of the subband corresponding to the system bandwidth is a multiple or a submultiple of the size of each narrowband divided by the base station.

For a detailed description of the QCI that the base station receives the terminal device, refer to the foregoing embodiment, and details are not described herein again.

In summary, the working bandwidth determining method provided by the embodiment not only solves the problem of determining the narrowband used by the terminal device, but also solves the problem that the terminal device working in the narrowband feeds back the CQI to the base station, so that the terminal device can work in the The narrowband, which in turn, lays the foundation for the M2M application to move from the GMS or GPRS network to the LTE network, which helps to reduce the number of access networks maintained by the operator to reduce the maintenance cost of the entire network.

FIG. 4 is a schematic structural diagram of a terminal device according to an embodiment of the present invention. As shown in FIG. 3, the terminal device of this embodiment includes: a receiving module 41, a measuring module 42, and a sending module 43.

The receiving module 41 is configured to receive narrowband information sent by the base station in the network before the terminal device accesses the network, where the narrowband information carries a location of each narrowband that is divided by the base station from the system bandwidth.

The measuring module 42 is connected to the receiving module 41 for performing measurement on each narrow band according to the position of each narrow band received by the receiving module 41 to obtain measurement information of each narrow band.

The sending module 43 is connected to the measuring module 42 and configured to send, according to the measurement information of each narrowband obtained by the measuring module 42, narrowband indication information to the base station in the random access procedure, so that the base station determines the implementation according to the narrowband indication information. The narrow band of work used by the terminal equipment.

In an optional implementation, the receiving module 41 is specifically configured to receive the high layer signaling broadcast by the base station before the terminal device accesses the network in the embodiment, where the high layer signaling includes the narrowband information. For example, the receiving module 41 is specifically configured to receive the PBCH broadcast by the base station before the terminal device of the embodiment accesses the network, or the receiving module 41 may be specifically used before the terminal device of the embodiment accesses the network. Receiving a system message broadcast by the base station.

Wherein, the measurement information of each narrowband includes CQI and/or PMI information of each narrowband.

The measurement information based on each narrowband includes the CQI and/or PMI information of each narrowband. In an optional implementation, the sending module 43 is specifically configured to send a sequence code to the base station, and the preamble is indicated by the frequency domain resource. The narrow band indication information of the initial working narrow band is set. The initial working narrowband is a narrow band of all narrowbands divided by the base station. Optionally, the narrowband indication information may include: PMI information of the initial working narrowband when the terminal equipment works in the initial working narrowband (that is, the PMI information that the base station uses when the terminal equipment works in the initial working narrowband).

The measurement information based on each narrowband includes CQI and/or PMI information for each narrowband. In another alternative embodiment, the receiving module 41 is further configured to receive the RAR returned by the base station for the sequence code. The sending module 43 is specifically configured to send the sequence code to the base station, and send a message 3 to the base station after the receiving module receives the RAR, where the message 3 carries the narrowband indication information.

Optionally, the narrowband indication information may include: a location of at least one narrowband of all the narrowbands and CQI and/or PMI information of each of the at least one narrowband. The receiving module 41 is further configured to receive a location of the working narrowband sent by the base station.

Optionally, the narrowband indication information may include: a location of the narrowband that the terminal device requests to work in the embodiment, and a CQI and/or PMI information of the narrowband that the terminal device requests to work in this embodiment.

In an optional implementation manner, the sending module 43 is further configured to send, according to the preset CQI feedback mode, a narrowband CQI corresponding to the CQI feedback mode to the base station. Calculating a first CQI that reflects an average quality of the M selected subbands according to a mapping relationship between the system bandwidth and the number of subbands, and obtaining a first differential CQI according to the first CQI and a preset standard narrowband CQI, The first differential CQI is sent to the base station, wherein the standard narrowband is one of all narrowbands, wherein the standard narrowband is one of all narrowbands. Or

The sending module 43 is specifically configured to calculate, according to a mapping relationship between the system bandwidth and the number of subbands, a second CQI of each subband according to the mapping relationship between the system bandwidth and the number of subbands when the CQI feedback mode is a non-periodic high-level configuration narrowband CQI mode, and according to the Two CQIs and a preset standard narrowband CQI obtain a second differential CQI, Transmitting the second differential CQI to the base station. or

The sending module 43 is specifically configured to: when the CQI feedback mode is a user-selected narrowband CQI mode, calculate a selected subband in each bandwidth portion according to a mapping relationship between a system bandwidth and a number of subbands and a bandwidth portion. a third CQI, and transmitting the third CQI to the base station. Or

The sending module 43 is specifically configured to send the standard narrowband CQI to the base station when the CQI feedback mode is a non-periodic wideband CQI mode or a periodic wideband CQI mode.

In an alternative embodiment, each narrowband has the same size as the subband corresponding to the system bandwidth. Alternatively, the size of the sub-band corresponding to the system bandwidth is a multiple or a submultiple of the size of each narrow band.

The function modules of the terminal device provided in this embodiment are used to perform the process of the method embodiment shown in FIG. 1. The specific working principle is not described here. For details, refer to the description of the method embodiment.

The terminal device provided in this embodiment performs measurement on each narrowband according to the position of each narrowband divided from the system bandwidth sent by the base station, obtains measurement information of each narrowband, and then, according to the measurement information of each narrowband, The narrowband indication information is sent to the base station by using the random access resource or the message 3 in the random access process, so that the base station can determine the narrowband used by the terminal device, which has the advantages of being flexible, timely, and easy to implement. .

FIG. 5 is a schematic structural diagram of another terminal device according to an embodiment of the present invention. As shown in FIG. 5, the terminal device of this embodiment includes: a communication interface 51, a processor 52, and a memory 53.

The communication interface 51 is configured to receive narrowband information sent by the base station in the network before the terminal device accesses the network, where the narrowband information carries the location of each narrowband that is divided by the base station from the system bandwidth, and in the random access process. The medium-range base station sends the narrowband indication information provided by the processor 52 to enable the base station to determine the working narrowband used by the terminal device according to the embodiment according to the narrowband indication information.

The memory 53 is used to store the program. In particular, the program can include program code, the program code including computer operating instructions. The memory 53 may include a high speed RAM memory, and may also include a non-volatile memory such as at least one disk memory.

The processor 52 is configured to execute a program stored in the memory 53 for performing measurement on each narrow band according to the position of each narrow band received by the communication interface 51, obtaining measurement information of each narrow band, according to each narrow band measurement The information, the narrowband indication information is generated, and the narrowband indication information is provided to the communication interface 51. The processor 52 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one configured to implement an embodiment of the present invention. Multiple integrated circuits.

In an optional implementation, the communications interface 51 is specifically configured to receive, according to the embodiment, the terminal device receives the high layer signaling broadcast by the base station, where the high layer signaling includes the narrowband information.

For example, the communication interface 51 is specifically configured to receive the PBCH broadcast by the base station before the terminal device accesses the network in this embodiment, or the communication interface 51 may be specifically used before the terminal device accesses the network in this embodiment. Receiving a system message broadcast by the base station.

Wherein, the measurement information of each narrow band includes CQI and/or ΡΜΙ information of each narrow band.

The measurement information based on each narrowband includes CQI and/or ΡΜΙ information of each narrowband. In an optional implementation, the communication interface 51 may specifically send a sequence code to the base station, and the preset frequency domain resource indicates a preset. The narrow band of the initial working narrow band indicates information. The initial working narrowband is a narrow band of all narrowbands divided by the base station. Optionally, the narrowband indication information may include: ΡΜΙ information of the initial working narrowband when the terminal device works in the initial working narrowband (that is, the ΡΜΙ information that the terminal device expects the base station to use when working in the initial working narrowband).

The measurement information based on each narrowband includes CQI and/or ΡΜΙ information for each narrowband. In another optional implementation, the communication interface 51 is specifically configured to send the sequence code to the base station, and receive the base station for the sequence. The RAR returned by the code, and then the message 3 is sent to the base station, and the message 3 carries the narrowband indication information.

Optionally, the narrowband indication information may include: a location of at least one narrowband of all the narrowbands and CQI and/or ΡΜΙ information of each of the at least one narrowband. The communication interface 51 is also operative to receive the location of the working narrowband transmitted by the base station.

Optionally, the narrowband indication information may include: a location of a narrowband that the terminal device requests to work in this embodiment, and a CQI and/or UI information of the narrowband that the terminal device requests to work in this embodiment.

In an optional implementation manner, the communications interface 51 is further configured to send, to the base station, a narrowband CQI corresponding to the CQI feedback mode according to a preset CQI feedback mode.

For example, the processor 52 is further configured to: when the non-periodic user selects the narrowband CQI mode, calculate a first CQI that reflects an average quality of the selected subbands according to a mapping relationship between the system bandwidth and the number of subbands, and according to the Deriving a first CQI and a preset standard narrowband CQI to obtain a first differential CQI, The first differential CQI is provided to the communication interface 51. The communication interface 51 is specifically configured to send the first differential CQI provided by the processor 52 to the base station, wherein the standard narrowband is one of all narrowbands, wherein the standard narrowband is one of all narrowbands. or

The processor 52 is further configured to calculate a second CQI of each subband according to a mapping relationship between the system bandwidth and the number of subbands when the CQI feedback mode is a non-periodic high-level configured narrowband CQI mode, and according to the The second CQI and the preset standard narrowband CQI obtain a second differential CQI, and the second differential CQI is provided to the communication interface 51. The communication interface 51 is specifically operable to transmit a second differential CQI provided by the processor 52 to the base station. Or

The processor 52 is further configured to: when the CQI feedback mode is a user-selected narrowband CQI mode of a period, calculate a selected subband in each bandwidth portion according to a mapping relationship between a system bandwidth and a number of subbands and a bandwidth portion. The third CQI, and the third CQI is provided to the communication interface 51. The communication interface 51 is specifically operable to transmit a third CQI provided by the processor 52 to the base station. Or

The communication interface 51 is specifically configured to send the standard narrowband CQI to the base station when the CQI feedback mode is a non-periodic wideband CQI mode or a periodic wideband CQI mode.

Alternatively, if the communication interface 51, the processor 52, and the memory 53 are implemented independently of each other, the communication interface 51, the processor 52, and the memory 53 can be connected to each other through a bus and communicate with each other. The bus may be an industry standard architecture (Industry Standard Architecture), a Peripheral Component (PCI) bus, or an extended industry standard architecture (Extended Industry Standard Architecture). EISA) bus and so on. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 5, but it does not mean that there is only one bus or one type of bus.

If the communication interface 51, the processor 52, and the memory 53 are integrated on one chip, the communication interface 51, the processor 52, and the memory 53 can communicate with each other through the internal interface.

The terminal device provided in this embodiment can be used to perform the process of the method embodiment shown in FIG. 1. The specific working principle is not described here. For details, refer to the description of the method embodiment.

The terminal device provided by this embodiment is configured according to the bandwidth allocated from the system bandwidth sent by the base station. The position of the narrowband is measured on each narrowband to obtain the measurement information of each narrowband, and then according to the measurement information of each narrowband, the random access procedure in the random access process is used by initiating a random access procedure to the base station. Or the message 3 sends the narrowband indication information to the base station, so that the base station can determine the narrowband used by the terminal device, which has the advantages of being flexible, timely, and easy to implement.

FIG. 6 is a schematic structural diagram of a base station according to an embodiment of the present invention. As shown in FIG. 6, the base station of this embodiment includes: a sending module 61, a receiving module 62, and a determining module 63.

The sending module 61 is configured to send narrowband information to the terminal device before the terminal device accesses the network where the base station is located in the embodiment, where the narrowband information carries the location of each narrowband that is determined by the base station of the embodiment from the system bandwidth. So that the terminal device obtains measurement information for each narrow band.

The receiving module 62 is configured to receive narrowband indication information that is sent by the terminal device according to measurement information of each narrowband in a random access procedure. The receiving module 62 is connected to the transmitting module 61.

The determining module 63 is connected to the receiving module 62, and is configured to determine, according to the narrowband indication information received by the receiving module 62, a working narrowband used by the terminal device.

In an optional implementation, the sending module 61 is specifically configured to: before the terminal device accesses the network, broadcast high layer signaling to the terminal device, where the high layer signaling includes the narrowband information.

For example, the sending module 61 is specifically configured to broadcast the PBCH to the terminal device before the terminal device accesses the network. Alternatively, the sending module 61 is specifically configured to broadcast a system message to the terminal device before the terminal device accesses the network.

The measurement information of each narrowband includes a channel quality indicator CQI and/or precoding matrix index PMI information for each narrowband.

In an optional implementation, the receiving module 62 is specifically configured to receive a sequence code sent by the terminal device, use an index of the sequence code, send a time domain resource used by the sequence code, or send the sequence code. The frequency domain resource acquires the narrowband indication information indicating a preset initial working narrowband. The initial working narrowband is one of all narrowbands divided by the base station. Based on this, the determination module 63 can directly determine the working narrow band that the initial working narrow band uses for the terminal device.

Optionally, the narrowband indication information includes: PMI information of the initial working narrowband when the terminal device operates in an initial working narrowband. Based on this, the base station can communicate with the terminal device using the PMI information indicated by the narrowband indication information on the initial working narrowband.

In an optional implementation, the receiving module 62 is specifically configured to receive the sequence code sent by the terminal device, and return the RAR to the terminal device for the sequence code in the sending module 61. After receiving the message 3 sent by the terminal device, the message 3 carries the narrowband indication information. Optionally, the narrowband indication information includes: a location of at least one narrowband of all narrowbands and CQI and/or PMI information of each of the at least one narrowband. The determining module 36 is specifically configured to determine the working narrow band from the at least one narrow band according to the location of the at least one narrow band and the CQI and/or PMI information of each of the at least one narrow band. The sending module 62 is further configured to send the location of the working narrowband to the terminal device.

Optionally, the narrowband indication information includes: a location of the narrowband that the terminal device requests to work, and a CQI and/or PMI information of the narrowband that the terminal device requests to work. The determining module 63 is specifically configured to determine, according to the location of the narrowband that the terminal device requests to work, and the CQI and/or PMI information of the narrowband that the terminal device requests to work, determine that the narrowband that the terminal device requests to work is the working narrowband.

In an optional implementation manner, the receiving module 62 is further configured to receive a narrowband CQI that is sent by the terminal device and that corresponds to a preset CQI feedback mode.

For example, the receiving module 62 is specifically configured to: when the CQI feedback mode is a non-periodic user selected narrowband CQI mode, receive a first differential CQI sent by the terminal device, where the terminal device is configured according to a system bandwidth and a subband a mapping relationship of the number, calculating a first CQI that reflects an average quality of the M selected subbands, and obtaining the first differential CQI according to the first CQI and a preset standard narrowband CQI, where the standard narrowband is all narrowbands one of the. Or

The receiving module 62 is specifically configured to receive a second differential CQI sent by the terminal device when the CQI feedback mode is a non-periodic high-level configuration of a narrowband CQI mode, where the terminal device uses the system bandwidth and the number of subbands. a mapping relationship, calculating a second CQI of each subband, and obtaining the second differential CQI according to the second CQI and a preset standard narrowband CQI. Or the receiving module 62 is specifically configured to: when the CQI feedback mode is a user-selected narrowband CQI mode, receive a third CQI sent by the terminal device, where the terminal device is configured according to a system bandwidth and a number of subbands. The mapping of the bandwidth portion calculates the third CQI of the selected subband in each bandwidth portion of the response. Or

The receiving module 62 is specifically configured to receive the CQI of the standard narrowband sent by the terminal device when the CQI feedback mode is a non-periodic wideband CQI mode or a periodic wideband CQI mode.

The functional modules of the base station provided in this embodiment may be used to perform the method embodiment shown in FIG. The specific working principle of the process is not described here. For details, refer to the description of the method embodiment.

The base station provided in this embodiment, after dividing one or more narrowbands in the system bandwidth, sends the location of each narrowband to the terminal device through the narrowband information before the terminal device accesses the network, so that the terminal device can The narrowband position is measured on each narrowband to obtain measurement information of each narrowband, and then according to the measurement information of each narrowband, the narrowband indication information is sent to the base station by initiating a random access procedure to the base station, so that the base station can determine the terminal. The narrow band used by the device is flexible, timely and easy to implement.

FIG. 7 is a schematic structural diagram of another base station according to an embodiment of the present invention. As shown in FIG. 7, the base station of this embodiment includes: a communication interface 71, a processor 72, and a memory 73.

The communication interface 71 is configured to: before the terminal device accesses the network where the base station of the embodiment is located, send the narrowband information to the terminal device, and receive the narrowband indication information that is sent by the terminal device according to the measurement information of each narrowband in the random access procedure; The narrowband information carries the location of each narrowband divided by the base station of the embodiment from the system bandwidth, so that the terminal device obtains measurement information of each narrowband.

The memory 73 is used to store the program. In particular, the program can include program code, the program code including computer operating instructions. The memory 73 may include a high speed RAM memory, and may also include a non-volatile memory such as at least one disk memory.

The processor 72 is configured to execute a program stored in the memory 73 for determining a working narrow band used by the terminal device according to the narrowband indication information received by the communication interface 71.

Processor 72 may be a CPU, or a particular ASIC, or one or more integrated circuits configured to implement embodiments of the present invention.

In an optional implementation, the communication interface 71 is specifically configured to broadcast high layer signaling to the terminal device before the terminal device accesses the network, where the high layer signaling includes the narrowband information.

For example, the communication interface 71 is specifically configured to broadcast a PBCH to the terminal device before the terminal device accesses the network. Alternatively, the communication interface 71 is specifically configured to broadcast a system message to the terminal device before the terminal device accesses the network.

In an optional implementation manner, the communications interface 71 is specifically configured to receive, send, by the terminal device The sequence code obtains the narrowband indication information indicating a preset initial working narrowband by using an index of the sequence code, a time domain resource used to send the sequence code, or a frequency domain resource used to send the sequence code. The initial working narrowband is one of all narrowbands divided by the base station. Based on this, the processor 72 is specifically configured to directly determine the working narrow band used by the initial working narrowband for the terminal device.

In an optional implementation manner, the communication interface 71 is specifically configured to receive a sequence code sent by the terminal device, and after receiving the RAR for the terminal device, receive the message 3 sent by the terminal device, where Message 3 carries the narrowband indication information.

Optionally, the narrowband indication information comprises: a location of at least one narrowband of all narrowbands and CQI and/or PMI information of each of the at least one narrowband. The processor 72 is specifically operative to determine the working narrow band from the at least one narrow band based on the location of the at least one narrow band and the CQI and/or PMI information of each of the at least one narrow band. The communication interface 71 is further configured to transmit the location of the working narrowband to the terminal device.

Optionally, the narrowband indication information includes: a location of the narrowband that the terminal device requests to work, and a CQI and/or PMI information of the narrowband that the terminal device requests to work. The processor 72 is specifically configured to determine, according to the location of the narrowband that the terminal device requests to work and the narrowband CQI and/or PMI information that the terminal device requests to work, to determine that the narrowband of the terminal device requesting operation is the working narrowband.

In an optional implementation manner, the communication interface 71 is further configured to receive a narrowband CQI that is sent by the terminal device and corresponds to a preset CQI feedback mode.

For example, the communication interface 71 is specifically configured to receive the first differential CQI sent by the terminal device when the CQI feedback mode is a non-periodic user selected narrowband CQI mode. The terminal device calculates, according to a mapping relationship between the system bandwidth and the number of subbands, a first CQI that reflects an average quality of the M selected subbands, and obtains the first according to the first CQI and a preset standard narrowband CQI. Differential CQI, the standard narrowband is one of all narrowbands. Or

The communication interface 71 is specifically configured to receive the second differential CQI sent by the terminal device when the CQI feedback mode is a non-periodic high-level configured narrowband CQI mode. The terminal device calculates a second CQI of each subband according to a mapping relationship between the system bandwidth and the number of subbands, and The second differential CQI is obtained according to the second CQI and a preset standard narrowband CQI. Or the communication interface 71 body can be used for narrowband selection of the user in the CQI feedback mode for the period

In the CQI mode, the third CQI sent by the terminal device is received. The terminal device calculates the third CQI of the selected subband in each bandwidth portion according to the mapping relationship between the system bandwidth and the number of subbands and the bandwidth portion. Or

The communication interface 71 is specifically configured to receive the standard narrowband sent by the terminal device when the CQI feedback mode is a non-period wideband CQI mode or a periodic wideband CQI mode.

CQI.

Alternatively, if the communication interface 71, the processor 72, and the memory 73 are implemented independently of each other, the communication interface 71, the processor 72, and the memory 73 can be connected to each other through a bus and communicate with each other. The bus can be an ISA bus, a PCI bus or an EISA bus. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 7, but it does not mean that there is only one bus or one type of bus.

If the communication interface 71, the processor 72, and the memory 73 are integrated on a single chip, the communication interface 71, the processor 72, and the memory 73 can communicate with each other through the internal interface.

The base station provided in this embodiment may be used to perform the process of the method embodiment shown in FIG. 3. The specific working principle is not described here. For details, refer to the description of the method embodiment.

One of ordinary skill in the art will appreciate that all or part of the steps to implement the various method embodiments described above can be accomplished by hardware associated with the program instructions. The aforementioned program can be stored in a computer readable storage medium. The program, when executed, performs the steps including the above-described method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

It should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art The technical solutions described in the foregoing embodiments can still be A modification of the line, or equivalent replacement of some or all of the technical features, and the modifications or substitutions do not depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

Rights request

1. A method for determining a working narrowband, which is characterized by including:

Before accessing the network, the terminal device receives narrowband information sent by the base station in the network. The narrowband information carries the location of each narrowband divided by the base station from the system bandwidth; position, measure on each narrow band, and obtain the measurement information of each narrow band;

The terminal device sends narrowband indication information to the base station during the random access process according to the measurement information of each narrowband, so that the base station determines the working narrowband used by the terminal device based on the narrowband indication information.

2. The working narrowband determination method according to claim 1, characterized in that, before the terminal device accesses the network, receiving the narrowband information sent by the base station in the network includes:

Before accessing the network, the terminal device receives high-level signaling broadcast by the base station, and the high-level signaling includes the narrowband information.

3. The working narrowband determination method according to claim 2, characterized in that, before the terminal device accesses the network, receiving the high-level signaling broadcast by the base station includes:

The terminal device receives the PBCH broadcast by the base station before accessing the network; or the terminal device receives the system message broadcast by the base station before accessing the network.

4. The working narrowband determination method according to claim 1 or 2 or 3, characterized in that the measurement information of each narrowband includes channel quality indicator CQI and/or precoding matrix indicator PMI information of each narrowband.

5. The working narrowband determination method according to claim 4, characterized in that, according to the measurement information of each narrowband, the terminal device sends narrowband indication information to the base station during the random access process, including:

The terminal equipment sends a sequence code to the base station, and uses the index of the sequence code and the narrowband indication information of the initial operating narrowband sent, and the initial operating narrowband is one narrowband among all narrowbands.

6. The method for determining the working narrowband according to claim 5, wherein the narrowband indication information includes: PMI information of the initial working narrowband when the terminal device works in the initial working narrowband.

7. The working narrowband determination method according to claim 4, characterized in that, according to the measurement information of each narrowband, the terminal device sends narrowband indication information to the base station during the random access process, including:

The terminal device sends a sequence code to the base station;

The terminal device receives a random access response RAR returned by the base station for the sequence code;

The terminal device sends message 3 to the base station, and the message 3 carries the narrowband indication information.

8. The working narrowband determination method according to claim 7, characterized in that the narrowband indication information includes: the position of at least one narrowband among all narrowbands and the CQI and/or PMI information of each narrowband in the at least one narrowband. .

9. The working bandwidth determination method according to claim 8, characterized in that the terminal device sends narrowband indication information to the base station during the random access process according to the measurement information of each narrowband, so that the base station Determining the working narrowband used by the terminal device according to the narrowband indication information includes:

The terminal device receives the position of the working narrowband sent by the base station.

10. The working narrowband determination method according to claim 7, characterized in that the narrowband indication information includes: the location of the narrowband that the terminal device requests to operate and the CQI and/or PMI of the narrowband that the terminal device requests to operate. information.

11. The method for determining the working narrow band according to any one of claims 1 to 10, characterized in that, further comprising:

The terminal equipment sends the narrowband CQI corresponding to the CQI feedback mode to the base station according to the preset CQI feedback mode.

12. The working narrowband determination method according to claim 11, wherein the terminal device sends the narrowband CQI corresponding to the CQI feedback mode to the base station according to the preset CQI feedback mode, including:

If the CQI feedback mode is a non-periodic user-selected narrowband CQI mode, the terminal device calculates the first CQI reflecting the average quality of the M selected subbands according to the mapping relationship between the system bandwidth and the number of subbands, and calculates the first CQI according to the mapping relationship between the system bandwidth and the number of subbands. The first CQI and the preset standard narrowband CQI are used to obtain a first differential CQI, and the first differential CQI is sent to the base station, where the standard narrowband is one of all narrowbands; If the CQI feedback mode is a narrowband CQI mode configured by aperiodic higher layers, the terminal device calculates the second CQI of each subband based on the mapping relationship between the system bandwidth and the number of subbands, and calculates the second CQI of each subband based on the second CQI and the number of subbands. Preset standard narrowband CQI, obtain a second differential CQI, and send the second differential CQI to the base station;

If the CQI feedback mode is a periodic user-selected narrowband CQI mode, the terminal device calculates the third CQI reflecting the selected subband in each bandwidth part according to the mapping relationship between the system bandwidth and the number of subbands and the bandwidth part. , and send the third CQI to the base station;

If the CQI feedback mode is an aperiodic wideband CQI mode or a periodic wideband CQI mode

13. The working narrowband determination method according to any one of claims 1 to 12, characterized in that the size of each narrowband is the same as the size of the subband corresponding to the system bandwidth; or

The size of the subband corresponding to the system bandwidth is a multiple or submultiple of the size of each narrowband.

14. A method for determining a working narrowband, characterized by including:

Before the terminal device accesses the network where the base station is located, the base station sends narrowband information to the terminal device. The narrowband information carries the location of each narrowband divided by the base station from the system bandwidth, so that the terminal device Obtain measurement information for each narrowband;

The base station receives the narrowband indication information sent by the terminal device during the random access process according to the measurement information of each narrowband;

The base station determines the working narrowband used by the terminal device based on the narrowband indication information.

15. The working narrowband determination method according to claim 14, characterized in that, before the terminal device accesses the network where the base station is located, sending narrowband information to the terminal device includes:

The base station broadcasts high-layer signaling to the terminal device before the terminal device accesses the network, and the high-layer signaling includes the narrowband information.

16. The working narrowband determination method according to claim 15, characterized in that, before the terminal device accesses the network, broadcasting high-level signaling to the terminal device by the base station includes: the base station Before the terminal device accesses the network, broadcast the PBCH to the terminal device; or

The base station broadcasts a system message to the terminal device before the terminal device accesses the network.

17. The method for determining the working narrow band according to claim 14 or 15 or 16, characterized in that Therefore, the measurement information of each narrowband includes channel quality indicator CQI and/or precoding matrix indicator PMI information of each narrowband.

18. The working narrowband determination method according to claim 17, characterized in that, the base station receiving the narrowband indication information sent by the terminal device according to the measurement information of each narrowband during the random access process includes:

The base station receives the sequence code sent by the terminal device, and uses the index of the sequence code to indicate the narrowband indication information of the preset initial narrowband. The initial operating narrowband is one narrowband among all narrowbands.

19. The method for determining the working narrowband according to claim 18, wherein the narrowband indication information includes: PMI information of the initial working narrowband when the terminal device works in the initial working narrowband.

20. The working narrowband determination method according to claim 17, characterized in that, the base station receiving the narrowband indication information sent by the terminal device according to the measurement information of each narrowband during the random access process includes:

The base station receives the sequence code sent by the terminal device;

The base station sends a random access response RAR for the sequence code to the terminal device; the base station receives the message 3 sent by the terminal device, and the message 3 carries the narrowband indication information.

21. The working narrowband determination method according to claim 20, characterized in that the narrowband indication information includes: the position of at least one narrowband among all narrowbands and the CQI and/or PMI information of each narrowband in the at least one narrowband. ;

The base station determines the working narrowband used by the terminal device based on the narrowband indication information, including:

The base station determines the working narrowband from the at least one narrowband based on the location of the at least one narrowband and the CQI and/or PMI information of each narrowband in the at least one narrowband.

22. The working narrowband determination method according to claim 21, characterized in that, the base station determines from the location of the at least one narrowband and the CQI and/or PMI information of each narrowband in the at least one narrowband. After determining the working narrowband in at least one narrowband, it includes:

The base station sends the location of the working narrowband to the terminal device.

23. The method for determining the working narrow band according to claim 20, characterized in that: the narrow band The band indication information includes: the location of the narrowband that the terminal device requests to operate and the CQI and/or PMI information of the narrowband that the terminal device requests to operate;

The base station determines that the narrowband requested by the terminal device is the operating narrowband based on the location of the narrowband requested by the terminal device and the CQI and/or PMI information of the narrowband requested by the terminal device.

24. The method for determining the working narrow band according to any one of claims 14 to 23, characterized in that, further comprising:

The base station receives the narrowband signal corresponding to the preset CQI feedback mode sent by the terminal device.

CQI.

25. The working narrowband determination method according to claim 24, wherein the base station receiving the narrowband CQI corresponding to the preset CQI feedback mode sent by the terminal device includes: if the CQI feedback mode is aperiodic The narrowband CQI mode selected by the user, the base station receives the first differential CQI sent by the terminal device, wherein the terminal device calculates and reflects the average of the M selected subbands according to the mapping relationship between the system bandwidth and the number of subbands. quality of the first CQI, and obtain the first differential CQI based on the first CQI and the preset standard narrowband CQI, where the standard narrowband is one of all narrowbands;

If the CQI feedback mode is a non-periodic narrowband CQI mode configured by higher layers, the base station receives the second differential CQI sent by the terminal device, where the terminal device according to the mapping relationship between the system bandwidth and the number of subbands, Calculate the second CQI of each subband, and obtain the second differential CQI based on the second CQI and the preset standard narrowband CQI;

If the CQI feedback mode is a periodic user-selected narrowband CQI mode, the base station receives the third CQI sent by the terminal device, wherein the terminal device is based on the mapping relationship between the system bandwidth, the number of subbands, and the bandwidth part. , calculating said third CQI reflecting the selected subband in each bandwidth portion;

If the CQI feedback mode is an aperiodic wideband CQI mode or a periodic wideband CQI mode, the base station receives the standard narrowband CQI sent by the terminal device.

26. The working narrowband determination method according to any one of claims 14 to 25, characterized in that the size of each narrowband is the same as the size of the subband corresponding to the system bandwidth; or

27. A terminal device, characterized by: including:

A receiving module, configured to receive narrowband information sent by the base station in the network before the terminal device accesses the network, where the narrowband information carries the location of each narrowband divided by the base station from the system bandwidth;

The measurement module is used to measure on each narrow band according to the position of each narrow band to obtain the measurement information of each narrow band;

A sending module, configured to send narrowband indication information to the base station during the random access process according to the measurement information of each narrowband, so that the base station determines the working narrowband used by the terminal device based on the narrowband indication information.

28. The terminal device according to claim 27, wherein the receiving module is specifically configured to receive high-level signaling broadcast by the base station before the terminal device accesses the network, and the high-level signaling Includes the narrowband information.

29. The terminal equipment according to claim 28, wherein the receiving module is specifically configured to receive the PBCH broadcast by the base station before the terminal equipment accesses the network; or

The receiving module is specifically configured to receive system messages broadcast by the base station before the terminal device accesses the network.

30. The terminal equipment according to claim 27 or 28 or 29, characterized in that the measurement information of each narrowband includes channel quality indicator CQI and/or precoding matrix index PMI information of each narrowband.

31. The terminal device according to claim 30, wherein the sending module is specifically configured to send a sequence code to the base station, and send the narrowband indication of the narrowband of the sequence code through the index of the sequence code. Information, the initial working narrowband is one narrowband among all narrowbands.

32. The terminal device according to claim 31, wherein the narrowband indication information includes: PMI information of the initial operating narrowband when the terminal device operates in the initial operating narrowband.

33. The terminal device according to claim 30, wherein the receiving module is further configured to receive a random access response RAR returned by the base station for the sequence code;

The sending module is specifically configured to send the sequence code to the base station, and after the receiving module receives the RAR, send message 3 to the base station, where the message 3 carries the narrowband Instructions.

34. The terminal device according to claim 33, characterized in that the narrowband indication information includes: the position of at least one narrowband among all narrowbands and the CQI and/or PMI information of each narrowband in the at least one narrowband.

35. The terminal device according to claim 34, wherein the receiving module is further configured to receive the position of the working narrowband sent by the base station.

36. The terminal device according to claim 33, wherein the narrowband indication information includes: the location of the narrowband that the terminal device requests to operate and the CQI and/or PMI information of the narrowband that the terminal device requests to operate.

37. The terminal device according to any one of claims 27 to 36, characterized in that the sending module is further configured to send a narrowband signal corresponding to the CQI feedback mode to the base station according to a preset CQI feedback mode. CQI.

38. The terminal equipment according to claim 37, wherein the sending module is configured to send the narrowband CQI corresponding to the CQI feedback mode to the base station according to the preset CQI feedback mode, including:

The sending module is specifically configured to calculate the first CQI reflecting the average quality of the M selected subbands according to the mapping relationship between the system bandwidth and the number of subbands in a non-periodic user-selected narrowband CQI mode, and according to the The first CQI and the preset standard narrowband CQI, obtain the first differential CQI, and send the first differential CQI to the base station, where the standard narrowband is one of all narrowbands, where the standard narrowband is one of all narrowbands; or

The sending module is specifically configured to calculate the second CQI of each subband according to the mapping relationship between the system bandwidth and the number of subbands when the CQI feedback mode is a narrowband CQI mode configured by a non-periodic higher layer, and according to the The second CQI is combined with the preset standard narrowband CQI to obtain a second differential CQI, and the second differential CQI is sent to the base station; or

The sending module is specifically configured to calculate and reflect the selected subband in each bandwidth part according to the mapping relationship between the system bandwidth and the number of subbands and the bandwidth part when the CQI feedback mode is a periodic user-selected narrowband CQI mode. the third CQI, and sends the third CQI to the base station; or

The sending module is specifically configured to send the standard narrowband CQI to the base station when the CQI feedback mode is an aperiodic wideband CQI mode or a periodic wideband CQI mode.

39. A base station, characterized by including: A sending module, configured to send narrowband information to the terminal device before the terminal device accesses the network where the base station is located, where the narrowband information carries the location of each narrowband divided by the base station from the system bandwidth, so that The terminal device obtains the measurement information of each narrowband;

A receiving module, configured to receive the narrowband indication information sent by the terminal device during the random access process according to the measurement information of each narrowband;

Determining module, configured to determine the working narrowband used by the terminal device according to the narrowband indication information.

40. The base station according to claim 39, wherein the sending module is specifically configured to broadcast high-level signaling to the terminal device before the terminal device accesses the network, and the high-level signaling includes The narrowband information.

41. The base station according to claim 40, wherein the sending module is specifically configured to broadcast the PBCH to the terminal device before the terminal device accesses the network; or the sending module is specifically configured to broadcast the PBCH to the terminal device before the terminal device accesses the network; or the sending module is specifically configured to Before the terminal device accesses the network, a system message is broadcast to the terminal device.

42. The base station according to claim 39 or 40 or 41, characterized in that the measurement information of each narrowband includes channel quality indicator CQI and/or precoding matrix indicator PMI information of each narrowband.

43. The base station according to claim 42, characterized in that the receiving module is specifically configured to receive the sequence code sent by the terminal device, and transmit the narrowband of the sequence working narrowband through the index of the sequence code. Indicates that the initial working narrowband is one narrowband among all narrowbands.

44. The base station according to claim 43, wherein the narrowband indication information includes: PMI information of the initial operating narrowband when the terminal device operates in the initial operating narrowband.

45. The base station according to claim 42, wherein the receiving module is specifically configured to receive a sequence code sent by the terminal device, and return a random sequence code to the terminal device in the sending module. After accessing the RAR response, receive message 3 sent by the terminal device, where the message 3 carries the narrowband indication information;

The sending module is also configured to send the RAR for the sequence code to the terminal device.

46. The base station according to claim 45, characterized in that: the narrowband indication information packet Including: the position of at least one narrow band among all narrow bands and the location of each narrow band in the at least one narrow band

CQI and/or PMI information;

The determination module is specifically configured to determine the working narrowband from the at least one narrowband based on the position of the at least one narrowband and the CQI and/or PMI information of each narrowband in the at least one narrowband.

47. The base station according to claim 46, wherein the sending module is further configured to send the position of the working narrowband to the terminal device.

48. The base station according to claim 45, characterized in that the narrowband indication information includes: the location of the narrowband in which the terminal equipment requests to operate and the CQI and/or PMI information of the narrowband in which the terminal equipment requests to operate;

The determination module is specifically configured to determine that the narrowband requested by the terminal device is the working narrowband based on the location of the narrowband requested by the terminal device and the CQI and/or PMI information of the narrowband requested by the terminal device.

49. The base station according to any one of claims 39 to 48, characterized in that the receiving module is further configured to receive the narrowband CQI corresponding to the preset CQI feedback mode sent by the terminal device.

50. The base station according to claim 49, wherein the receiving module for receiving the narrowband CQI corresponding to the preset CQI feedback mode sent by the terminal device includes:

The receiving module is specifically configured to receive the first differential CQI sent by the terminal device when the CQI feedback mode is a non-periodic user-selected narrowband CQI mode, wherein the terminal device determines the first differential CQI according to the system bandwidth and subband number. Mapping relationship of numbers, calculate the first CQI reflecting the average quality of M selected sub-bands, and obtain the first differential CQI based on the first CQI and the preset standard narrowband CQI, the standard narrowband is among all narrowbands one of; or

The receiving module is specifically configured to receive the second differential CQI sent by the terminal device when the CQI feedback mode is a non-periodic high-layer configured narrowband CQI mode, wherein the terminal device determines the difference between the system bandwidth and the subband number. Mapping relationship between numbers, calculates the second CQI of each subband, and obtains the second differential CQI according to the second CQI and the preset standard narrowband CQI; or the receiving module is specifically configured to operate in the CQI feedback mode When the narrowband CQI mode is selected for a periodic user, the third CQI sent by the terminal device is received, wherein the terminal device calculates and reflects each bandwidth part according to the mapping relationship between the system bandwidth and the number of subbands and the bandwidth part. the third CQI of the selected subband; or

The receiving module is specifically configured to receive the standard narrowband CQI sent by the terminal device when the CQI feedback mode is an aperiodic wideband CQI mode or a periodic wideband CQI mode.