WO2020019250A1

WO2020019250A1 - Channel detection method and related device

Info

Publication number: WO2020019250A1
Application number: PCT/CN2018/097246
Authority: WO
Inventors: 薛剑韬; 魏璟鑫; 程铁铮; 吴向春
Original assignee: 华为技术有限公司
Priority date: 2018-07-26
Filing date: 2018-07-26
Publication date: 2020-01-30
Also published as: CN112470507B; CN112470507A

Abstract

The present application provides a channel detection method and a related device. Said method may comprise: when at least two segments of a physical downlink shared channel (PDSCH) exist on a system bandwidth, a terminal device determining respective channel information concerning the at least two segments of the PDSCH; the terminal device determining, according to the respective channel information concerning the at least two segments of the PDSCH, priorities of the at least two segments of the PDSCH; and the terminal device detecting, according to the priorities, the at least two segments of the PDSCH. The method above enables a terminal device to effectively detect a PDSCH according to priority, when multiple segments of the PDSCH exist on a system bandwidth.

Description

Channel detection method and related equipment

Technical field

The present invention relates to the field of communication technologies, and in particular, to a channel detection method and related equipment.

Background technique

With the continuous development of communication technology, traditional cellular mobile communication systems are also facing various challenges. It is hoped that there can be an IoT communication system that can enable terminals to save power, work for a long time, and have low cost. Among them, Long Term Evolution (LTE) in the R14 version proposes a further evolved Evolved Machine Type Communication (FeMTC) system that can meet the above requirements. The main feature of the FeMTC system is that the signal receiving bandwidth of the terminal can be smaller than the signal transmitting bandwidth of the base station, thereby reducing the power consumption and complexity of the terminal. In addition, in the FeMTC system, the base station can repeatedly transmit a physical downlink shared channel (PDSCH) or a machine type physical downlink control channel (MPDCCH) with the same content multiple times, so that the terminal has a More opportunities to demodulate.

The FeMTC system can support frequency hopping communication, and the signals after PDSCH frequency hopping can be dispersed in the system bandwidth. If the signal after PDSCH frequency hopping exceeds the system bandwidth, it may cause the frequency domain of the signal after PDSCH frequency hopping to cyclically shift to At the other end of the system bandwidth, two or more PDSCHs are formed. As shown in FIG. 1, the system bandwidth shown in FIG. 1 is 5 MHz. If the PDSCH signal exceeds the system bandwidth after frequency hopping, the excess can be shifted to the bottom of the system bandwidth to form two PDSCH segments.

However, it may not be possible to detect the PDSCH divided into multiple segments at the same time because of bandwidth limitation or power saving.

Summary of the Invention

The technical problem to be solved in this application is to solve how to select a PDSCH channel for detection when the PDSCH channel is divided into multiple segments on the system bandwidth.

In a first aspect, the present application provides a channel detection method applied to a terminal device. The method may include: when there are at least two PDSCH segments in a system bandwidth, determining channel information of each of the at least two PDSCH segments; and according to the at least two segments, The respective channel information of the PDSCH determines the priorities of the at least two PDSCHs; and the at least two PDSCHs are detected according to the priorities.

By implementing the foregoing feasible implementation manner, when the PDSCH channel is divided into multiple segments on the system bandwidth, the terminal device can detect the multiple PDSCH segments according to priorities, and can effectively detect the PDSCH.

As a feasible implementation manner, the channel information of each of the at least two PDSCH segments may be: whether an MPDCCH exists in a subframe in which the at least two PDSCH segments are located. At this time, the terminal device determines the priorities of the at least two PDSCHs according to the channel information of the at least two PDSCHs, which may include: determining that the priority of the target PDSCH in the at least two PDSCHs is the highest priority, and the target PDSCH is The PDSCH of the MPDCCH exists in the sub-frame. The terminal device detects the at least two PDSCHs according to the priority, which may include: selecting a target PDSCH with the highest priority for detection.

As a feasible implementation manner, when the terminal device detects the target PDSCH, it may also detect the MPDCCH on the subframe where the target PDSCH is located.

It can be seen that by implementing the foregoing feasible implementation mode, when the MSCH exists in the subframe in which the PDSCH is located, and the PDSCH signal and the MPDCCH signal can be jointly detected by the terminal device, the terminal device preferentially selects the PDSCH in which the MPDCCH exists in the subframe to detect, and Detecting the MPDCCH at the same time can make the PDSCH and MPDCCH demodulate in one subframe at the same time, and the network equipment can continuously schedule the terminal equipment, which can shorten the scheduling time of the terminal equipment, and the terminal equipment can continuously demodulate and improve the terminal. The demodulation performance of the device.

As a feasible implementation manner, the channel information of the at least two PDSCH segments may be: the number of resource blocks (RBs) of the at least two PDSCH segments. At this time, the terminal device determines the priorities of the at least two PDSCHs according to the channel information of the at least two PDSCHs, which may be: if the number of RBs of the first PDSCH is greater than the number of RBs of the second PDSCH in the at least two PDSCHs, Then, the terminal device may determine that the priority of the first PDSCH is higher than the priority of the second PDSCH.

If the PDSCH has a large number of RBs, when the terminal device detects the PDSCH, the decoding accuracy of the PDSCH signal may be higher. It can be seen that by implementing the foregoing feasible implementation manner, a terminal device determines a PDSCH with a larger number of RBs, and has a higher priority. When detecting the PDSCH, the decoding accuracy rate of the terminal device can be improved, thereby improving the demodulation of the terminal device. performance.

In an embodiment, the terminal device determines the priorities of the at least two PDSCHs according to the channel information of the at least two PDSCHs, and may also be: if the number of RBs of the first PDSCH in the at least two PDSCHs is less than the second The number of RBs of the PDSCH, then the terminal device may determine that the priority of the first PDSCH is higher than the priority of the second PDSCH.

In an embodiment, the terminal device determines the priorities of the at least two PDSCHs according to the channel information of the at least two PDSCHs, and may also be: if the number of RBs of the first PDSCH and the second PDSCH in the at least two PDSCHs The number of RBs is the same, and the terminal device may determine the priorities of the first PDSCH and the second PDSCH randomly or according to a predetermined priority order (for example, a PDSCH with a lower RB sequence number has a higher priority).

As a feasible implementation manner, the channel information of each of the at least two segments of PDSCH may be: historical quality information of the frequency domain in which the at least two segments of PDSCH are located. The historical quality information includes historical signal-to-noise ratio and / or historical peak-to-average ratio. ratio. At this time, the terminal device determines the priorities of the at least two PDSCHs according to the channel information of the at least two PDSCHs, which may be: if the historical quality information of the frequency domain where the first PDSCH is better than the second PDSCH in the at least two PDSCHs The historical quality information of the frequency domain where the PDSCH is located determines that the priority of the first PDSCH is higher than the priority of the second PDSCH.

If historically the frequency domain in which the at least two PDSCHs are located has been measured by the terminal device, the historical quality information of the frequency domain in which the at least two PDSCHs are located may be stored in the terminal device. By implementing the foregoing feasible implementation manner, the terminal device can determine the priorities of the at least two PDSCHs based on historical quality information (such as historical peak-to-average ratio and / or historical signal-to-noise ratio), and the better the historical quality information (such as historical peak-to-average) PDSCH with high ratio (or high historical signal-to-noise ratio), the higher its priority. For a PDSCH with better historical quality information, the demodulation speed or demodulation quality can be faster when demodulating it. In this way, when detecting a PDSCH, the terminal device preferentially selects a PDSCH with good quality information for detection. Can improve the demodulation performance of terminal equipment.

As a feasible implementation manner, the terminal device detecting the at least two segments of PDSCH according to the priority may include: in the repetition period of the at least two segments of PDSCH, sequentially detecting the at least two priorities in descending order of priority. Two PDSCH.

It can be seen that by implementing the above feasible implementation manner, the terminal device detects the at least two PDSCHs in order of priority from highest to lowest, and can achieve a more complete detection of the at least two PDSCHs without discarding any one of them and having a frequency selection gain.

As a feasible implementation manner, the channel information of each of the at least two sections of PDSCH may be the current channel quality of each of at least two sections of PDSCH, and the current channel quality includes the current peak-to-average ratio and / or the current signal-to-noise ratio. At this time, the terminal device determines the channel information of each of the at least two PDSCHs, including: within the repetition period of the at least two PDSCHs, receiving the at least two PDSCHs in turn, and counting the current channel quality of the at least two PDSCHs. The terminal device determines the priorities of the at least two PDSCHs according to the channel information of the at least two PDSCHs, which may include: if the current channel quality of the frequency domain in which the first PDSCH is located in the at least two PDSCHs is better than the frequency in which the second PDSCH is located The current channel quality of the domain determines that the priority of the first PDSCH is higher than the priority of the second PDSCH. The terminal device detects the at least two PDSCHs according to the priority, which may include: selecting the PDSCH with the highest priority for detection.

It can be seen that, by implementing the foregoing feasible implementation manner, in the repetition period of the at least two PDSCHs, the terminal device first receives the at least two PDSCHs in turn, and counts the channel quality, and then detects the PDSCH of the channel quality number first. It is ensured that the current channel quality of the at least two segments of PDSCH is completely received and counted in the early stage, without discarding any of them, and the PDSCH with the best current channel quality can be selected for detection in the later stage, which can further improve the demodulation performance of the terminal.

In a second aspect, a terminal device is provided, and the terminal device has a function of implementing the behavior of the terminal device in the first aspect or a possible implementation manner of the first aspect. This function can be realized by hardware, and can also be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions. The module may be software and / or hardware. Based on the same inventive concept, as the principle and beneficial effects of the terminal device for solving problems can be referred to the first aspect and the possible method implementations of the first aspect and the beneficial effects, the implementation of the terminal device can refer to the foregoing The first aspect and the possible method implementations of the first aspect are not repeated here.

According to a third aspect, a terminal device is provided. The terminal device includes: a memory for storing one or more programs; and a processor for calling the programs stored in the memory to implement the method design of the first aspect. For the solution, the implementation manner of the terminal device for solving the problem, and the beneficial effects, reference may be made to the foregoing first aspect and the implementation manners and beneficial effects of each possible method of the first aspect, and repeated descriptions will not be repeated.

According to a fourth aspect, a computer-readable storage medium is provided. The computer storage medium stores a computer program, where the computer program includes program instructions, and the program instructions, when executed by a processor, cause the processor to execute the first section. The implementation methods and beneficial effects of the methods on the one hand and the possible methods on the first hand are not repeated here.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of a PDSCH scenario after frequency hopping according to an embodiment of the present application; FIG.

2 is a system architecture diagram for channel detection provided by an embodiment of the present application;

3 is a schematic flowchart of a channel detection method according to an embodiment of the present application;

4 is a schematic flowchart of another channel detection method according to an embodiment of the present application;

FIG. 5 is a schematic diagram of another PDSCH scenario after frequency hopping according to an embodiment of the present application; FIG.

6 is a schematic flowchart of another channel detection method according to an embodiment of the present application;

7 is a schematic diagram of another PDSCH scenario after frequency hopping according to an embodiment of the present application;

8 is a schematic flowchart of another channel detection method according to an embodiment of the present application;

9 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

FIG. 10 is a schematic structural diagram of another terminal device according to an embodiment of the present application.

detailed description

The embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

In order to better understand a channel detection method and related equipment provided in the embodiments of the present application, the network architecture involved in the present application is described below first.

Please refer to FIG. 2, which is a system architecture diagram for channel detection provided by an embodiment of the present application. The system may be an Internet of Things (IoT) system, where the IOT system includes a further evolved Internet of Things (Machine) Type Communication (FeMTC) system. In one embodiment, the system may also be a long-term evolution (LTE) mobile communication system, a future evolution fifth generation mobile communication (the 5th Generation, 5G) system, a new air interface (NR) system, and the like. For frequency-hopping communication systems, this application does not place any restrictions on this. As shown in FIG. 2, the system may include: one or more terminal devices 201 and a network device 202. among them:

The terminal device 201 may be a terminal residing in the cell 203. The terminal devices 201 may be distributed throughout the system. In some embodiments of the present application, the terminal device 201 may be, for example, a FeMTC terminal device. Specifically, the FeMTC terminal device may include, but is not limited to, a mobile device, a mobile station, a mobile unit, and M2M. Terminals, wireless units, remote units, user agents, mobile clients, etc.

In one embodiment, the terminal device 201 may be configured to communicate with the network device 202 through the wireless interface 204.

The network device 202 may be a base station, which may be used to communicate with one or more terminal devices, and may also be used to communicate with one or more base stations with partial terminal functions (such as a macro base station and a micro base station, such as access Point, communication between). The base station can be a base transceiver station (BTS) in a Time Division Division Synchronous Code Division Multiple Access (TD-SCDMA) system, or an evolutionary base station (Evolutional Node B in an LTE system). , ENodeB), and base stations in 5G systems and new air interface (NR) systems. In addition, the base station may also be an access point (Access Point, AP), a transmission node (Transmission Point (TRP)), a central unit (Central Unit, CU) or other network entities, and may include some of the functions of the above network entities or All functions.

Specifically, the network device 202 may be configured to communicate with the terminal 203 through the wireless interface 204 under the control of a network device controller (not shown). In some embodiments, the network device controller may be part of the core network, or may be integrated into the network device 201.

The wireless interface 204 may be expressed as a channel. These may include: a physical downlink shared channel (PDSCH) and a downlink control channel (PDCCH). When the system shown in FIG. 2 is a FeMTC system, the PDCCH may be a machine-type physical Downlink control channel (Machine Type Physical Downlink Control Channel, MPDCCH).

For a radio frame of 10 ms, it can be divided into 10 subframes (that is, each subframe is 1 ms). The MPDCCH can transmit control information, and can be transmitted on the first preset number (for example, the first 1-3) of OFDM symbols of a subframe. The control information may be used to notify the terminal device of the location of future downlink data or uplink data. The PDSCH can transmit specific service data, and it can often be transmitted on other OFDM symbols except MPDCCH in one subframe.

It should be noted that the system shown in FIG. 2 is only for a clearer explanation of the technical solution of the present application, and does not constitute a limitation on the present application. Those skilled in the art may know that with the evolution of the network architecture and the emergence of new service scenarios The technical solutions provided in this application are also applicable to similar technical problems.

The main invention principle of the present application is first introduced below.

The main inventive principles of this application may include: For a system supporting frequency hopping communication, the PDSCH signal may exceed the system bandwidth after frequency hopping, which may cause the frequency domain of the PDSCH signal to be cyclically shifted to the system bandwidth. At the other end, two or more PDSCH segments are formed within the system bandwidth. At this time, the terminal device may not be able to detect the multiple PDSCHs at the same time due to bandwidth limitation or power saving. Therefore, the terminal equipment is required to select the multiple PDSCHs to improve the demodulation performance of the terminal. The present application proposes the following solution to the above problem: according to the channel information of at least two PDSCH segments on the system bandwidth, the priorities of the at least two PDSCH segments are determined, and the at least two PDSCH segments are detected according to the determined priorities.

1) The terminal device can directly select the PDSCH with the highest priority for detection. For example, when an MPDCCH exists in a subframe in which the PDSCH is located, the terminal device may determine that the PDSCH in which the MPDCCH exists in the subframe has the highest priority, and may detect the PDSCH in which the MSCH exists in the subframe to detect until the demodulation is successful.

2) The terminal device may detect the at least two PDSCHs in turn in order of priority from high to low. For example, during the repetition period of the at least two PDSCHs, the terminal device first detects a PDSCH with a high priority and then detects a PDSCH with a low priority in accordance with the determined priority order, so that the detection is performed in turn until the demodulation is successful.

3) The terminal device may first receive the at least two PDSCHs in turn, determine the priorities of the at least two PDSCHs, and then select the PDSCH with the highest priority for detection until the demodulation is successful.

For a more detailed description, the method embodiments of the present application are described below. It can be understood that the method shown in this application may be a terminal device. The terminal device may be the terminal device 201 in the system shown in FIG. 2 and may be implemented as a terminal device of FeMTC. Specifically, it may be a mobile device, a mobile station (mobile station ), Mobile unit (mobile unit), wireless unit, remote unit, user agent, mobile client and so on.

Please refer to FIG. 3, which is a schematic flowchart of a channel detection method provided by the present application. The method shown in FIG. 3 may include:

301. When there are at least two pieces of physical downlink shared channel PDSCH on the system bandwidth, determine channel information of each of the at least two pieces of PDSCH.

In one embodiment, at least two physical downlink shared channels PDSCH existing on the system bandwidth may be formed due to frequency hopping. For example, the R14 version of FeMTC can support frequency hopping communication, which may cause the PDSCH signal to exceed the system bandwidth after frequency hopping, and then in the frequency domain, it is thought that the other end of the system bandwidth forms at least two PDSCH segments.

The respective channel information of the at least two segments of PDSCH may be whether there is an MPDCCH in the subframe in which the at least two segments of PDSCH are located, or the number of resource blocks (Resource Blocks, RBs) of the at least two segments of PDSCH, or the at least two The historical quality information of the frequency domain in which each segment of the PDSCH is located. The historical quality information may include the historical signal-to-noise ratio and / or the historical peak-to-average ratio. It may also be the current channel quality of the at least two PDSCH segments. The current channel quality includes the current peak. Average and / or current signal-to-noise ratio.

When the channel information of the at least two segments of PDSCH is whether the MPDCCH exists in the subframe in which the at least two segments of PDSCH are located, or when the channel information of the at least two segments of PDSCH is the respective resource block (Resource Block, When the number of RBs), the terminal device can know whether there is an MPDCCH in the subframes in which the at least two PDSCHs are located through a system message sent by the network device.

When the channel information of each of the at least two PDSCHs is historical quality information of the frequency domain in which each of the at least two PDSCHs is located, or is the current channel quality of each of the at least two PDSCHs, the terminal device may determine the historical quality information by itself. Or the current channel quality.

302. Determine priorities of at least two PDSCHs according to channel information of the at least two PDSCHs.

The priorities of the at least two PDSCH segments may refer to a priority detection order of the at least two PDSCH segments. The terminal device may determine the priorities of the at least two PDSCHs according to the obtained channel information corresponding to the at least two PDSCHs.

303. Detect at least two PDSCH segments according to priorities.

The terminal device may detect the at least two PDSCHs in order of priority from high to low. Alternatively, the terminal device may also select the PDSCH with the highest priority for detection.

It can be seen that, according to the embodiment of the present application, when the PDSCH channel is divided into multiple segments on the system bandwidth, the terminal device can detect the at least two PDSCH segments according to priorities, which can effectively detect the PDSCH and improve the demodulation performance of the terminal.

In one embodiment, when the channel information of each of the at least two PDSCH segments is whether a machine type physical downlink control channel MPDCCH exists in the subframe in which the at least two segments of PDSCH are located, the terminal device determines the channel information according to the channel information of each of the at least two segments of PDSCH. The priorities of the at least two segments of PDSCH may include: determining a priority of a target PDSCH in the at least two segments of PDSCH as a highest priority, and the target PDSCH is a PDSCH in which a MPDCCH exists in a subframe in which the target PDSCH exists. The terminal device detecting the at least two PDSCHs according to the priority may include: selecting a target PDSCH with the highest priority for detection.

Specifically, please refer to FIG. 4, which is a schematic flowchart of another channel detection method provided by the present application. The method shown in FIG. 4 may include:

401. When there are at least two pieces of physical downlink shared channel PDSCH on the system bandwidth, determine channel information of each of the at least two pieces of PDSCH.

The channel information is whether an MPDCCH exists in a subframe in which the at least two PDSCHs are located.

As shown in FIG. 5, another schematic scenario of PDSCH after frequency hopping is provided in the present application. It can be seen from FIG. 5 that the signals after the PDSCH frequency hopping are dispersed and distributed in the system bandwidth, forming two PDSCH segments. The subframe 1 where the PDSCH located at the top of the system bandwidth includes the MPDCCH, and the subframe 2 where the PDSCH located at the bottom of the system bandwidth includes the MPDCCH.

In one embodiment, the network device may send a system message to the terminal device, and the system message may include information about whether MPDCCH exists in the subframes in which the at least two PDSCHs are located. After receiving the system message, the terminal device can determine from the system message whether there is an MPDCCH in the subframe in which the at least two PDSCHs are located.

The MPDCCH can transmit control information, and the control information can be used to inform the terminal device where the future uplink data or downlink data is located.

402. Determine the priority of the target PDSCH in at least two PDSCHs as the highest priority, and the target PDSCH is a PDSCH in which the MPDCCH exists.

For example, as shown in FIG. 5, the terminal device may determine that the PDSCH located at the top of the system bandwidth is the target PDSCH.

403. Select the target PDSCH with the highest priority for detection.

The terminal device may select the priority of the target PDSCH among the at least two PDSCHs as the highest priority, and detect the target PDSCH. The terminal device may detect the target PDSCH until the demodulation is successful.

In one embodiment, when detecting the target PDSCH, the terminal device may also detect the MPDCCH on the subframe in which the target PDSCH is located. Since the MPDCCH carries control information and the PDSCH carries service information, the terminal device needs to first decode the control information, and then the service information can be scheduled by the network device. In this application, while the terminal device detects the service information on the target PDSCH, it also detects the control information on the MPDCC. It can demodulate the control information while demodulating the service information. Scheduled by network equipment.

In another embodiment, when the channel information of the at least two segments of PDSCH is the number of RBs of the at least two segments of PDSCH, or historical quality information of the frequency domain in which the at least two segments of PDSCH are located, the terminal device may perform The at least two PDSCHs are detected in turn in order of priority from high to low.

For example, please refer to FIG. 6, which is a schematic flowchart of another channel detection method according to an embodiment of the present application. The method shown in FIG. 6 may include:

601. When there are at least two pieces of physical downlink shared channel PDSCH on the system bandwidth, determine channel information of each of the at least two pieces of PDSCH.

The channel information is the number of RBs of the at least two PDSCH segments, or historical quality information of the frequency domain in which the at least two PDSCH segments are respectively located. The historical quality information includes historical signal-to-noise ratio and / or historical peak-to-average ratio.

In one embodiment, the network device may send a system message to the terminal device, and the system message may include the number of resource blocks RBs of the at least two PDSCHs, or historical quality information of the frequency domain in which they are located. After receiving the system message, the terminal device may determine, from the system message, the number of resource blocks RBs of the at least two PDSCHs, or historical quality information of the frequency domain in which they are located.

602. If the historical quality information of the frequency domain in which the first PDSCH is located in at least two PDSCHs is better than the historical quality information of the frequency domain in which the second PDSCH is located, determine that the priority of the first PDSCH is higher than the priority of the second PDSCH.

Or, if the number of RBs of the first PDSCH is greater than the number of RBs of the second PDSCH in at least two PDSCHs, it is determined that the priority of the first PDSCH is higher than the priority of the second PDSCH.

Or, if the number of RBs of the first PDSCH in at least two PDSCHs is less than the number of RBs of the second PDSCH, it is determined that the priority of the first PDSCH is higher than the priority of the second PDSCH.

Alternatively, when the number of RBs in the at least two PDSCH segments are equal, the priorities of the at least two PDSCH segments may be determined randomly or according to a predetermined priority order.

603. During the repetition period of the at least two PDSCHs, the at least two PDSCHs are detected in turn in order of priority from high to low.

The network device may set a repetition period for the at least two PDSCHs. Within the repetition period, the PDSCH or MPDCCH with the same content may be repeatedly transmitted multiple times, thereby enabling the terminal device to have more opportunities for detection and demodulation.

For example, as shown in FIG. 7, another schematic scenario of PDSCH after frequency hopping is provided in the present application. It can be seen from FIG. 7 that the signals before the PDSCH frequency hopping are concentrated in the system bandwidth, and the signals after the frequency hopping are scattered and distributed in the system bandwidth, forming two segments of the PDSCH. In the repetition period for the PDSCH, the network equipment may not segment. Send a PDSCH signal with the same content (both before and after frequency hopping). Assume in FIG. 7 that the PDSCH located at the low end of the system bandwidth has a high priority and the PDSCH located at the top of the system bandwidth has a low priority. Then, in a PDSCH repetition period, the terminal device receives the at least two segments of the at least two segments for the first time. When PDSCH, the PDSCH located at the low end of the system bandwidth can be detected first. When the PDSCH at the next two segments is received next time, the terminal device can detect the priority of the PDSCH located at the top of the system bandwidth. Detection until demodulation is successful.

In another embodiment, the terminal device may receive the at least two PDSCHs in turn, and then count the current channel information of the at least two PDSCHs, determine the priorities of the at least two PDSCHs, and select the PDSCH with the highest priority for detection. .

For example, please refer to FIG. 8, which is a schematic flowchart of another channel detection method according to an embodiment of the present application. The method shown in FIG. 8 may include:

801. In a repetition period of at least two PDSCHs, receive at least two PDSCHs in turn.

802. Count the current channel quality of at least two PDSCH segments.

Taking FIG. 7 as an example, in a PDSCH repetition period, when the PDSCH of the at least two segments is received for the first time, the terminal device may randomly receive one of the at least two PDSCHs and count the location of the PDSCH. The current channel quality in the frequency domain. When the PDSCH of the at least two segments is received next time, the terminal device may receive the PDSCH other than the PDSCH that has been received from the at least two segments of the PDSCH, and calculate the current channel quality of the frequency domain in which the received PDSCH is located. . When the current channel quality of all PDSCHs in the system bandwidth has been counted, the terminal may perform priority ranking as shown in step 803.

803. If the current channel quality of the frequency domain where the first PDSCH is located in at least two PDSCH segments is better than the current channel quality of the frequency domain where the second PDSCH is located, determine that the priority of the first PDSCH is higher than that of the second PDSCH.

The current channel quality may be a current signal-to-noise ratio and / or a current peak-to-average ratio. A PDSCH with a higher current signal-to-noise ratio may have a higher priority; a PDSCH with a higher peak-to-average ratio may have a higher priority.

804. Select the PDSCH with the highest priority for detection.

After determining the priorities of the at least two PDSCHs, the terminal device may select the PDSCH with the highest priority for detection until the demodulation is successful, and no longer detect the PDSCH other than the PDSCH with the highest priority.

The device embodiments of the present application are described below.

Please refer to FIG. 9, which is a schematic structural diagram of a terminal device provided by the present application. The terminal device shown in FIG. 9 may include:

A first determining module 901 is configured to determine channel information of each of the at least two PDSCHs when there are at least two pieces of a physical downlink shared channel PDSCH on a system bandwidth.

A second determining module 902 is configured to determine priorities of the at least two PDSCHs according to channel information of the at least two PDSCHs.

The detection module 903 is configured to detect the at least two PDSCH segments according to the priority.

In one embodiment, the channel information of each of the at least two PDSCH sections includes: whether a machine type physical downlink control channel MPDCCH exists in a subframe where the at least two PDSCH sections are located; and the second determining module 902 is specifically configured to determine the at least two The priority of the target PDSCH in the segment PDSCH is the highest priority, and the target PDSCH is the PDSCH in which the MPDCCH exists; the detection module 903 is specifically configured to select the target PDSCH with the highest priority for detection.

In one embodiment, the detection module 903 is further configured to detect the MPDCCH on the subframe in which the target PDSCH is located when the target PDSCH is detected.

In one embodiment, the channel information of each of the at least two segments of PDSCH includes: the number of resource blocks RB of each of the at least two segments of PDSCH; and the second determining module 902 is specifically configured to be used if the first of the at least two segments of PDSCH is If the number of RBs of the PDSCH is greater than the number of RBs of the second PDSCH, it is determined that the priority of the first PDSCH is higher than the priority of the second PDSCH.

In one embodiment, the channel information of each of the at least two segments of PDSCH includes: historical quality information of the frequency domain in which the at least two segments of PDSCH are located, and the historical quality information includes historical signal-to-noise ratio and / or historical peak-to-average ratio. The second determining module 902 is specifically configured to determine that if the historical quality information of the frequency domain where the first PDSCH is located in the at least two PDSCHs is better than the historical quality information of the frequency domain where the second PDSCH is located, the first PDSCH has a high priority. Priority for the second PDSCH.

In one embodiment, the detection module 903 is specifically configured to detect the at least two PDSCHs in turn in the order of priority from high to low within the repetition period of the at least two PDSCHs.

In one embodiment, the channel information of each of the at least two PDSCHs includes: the current channel quality of each of the at least two PDSCHs, and the current channel quality includes the current peak-to-average ratio and / or the current signal-to-noise ratio; the first determination Module 901 is specifically configured to receive the at least two PDSCHs in turn within the repetition period of the at least two PDSCHs, and to count the current channel quality of the at least two PDSCHs; the second determination module 902 is specifically configured to, if the at least In the two PDSCHs, the current channel quality of the frequency domain where the first PDSCH is located is better than the current channel quality of the frequency domain where the second PDSCH is located, then it is determined that the priority of the first PDSCH is higher than the priority of the second PDSCH; the detection module 903 , Specifically for selecting the PDSCH with the highest priority for detection.

Please refer to FIG. 10, which illustrates a terminal device provided by some embodiments of the present application. As shown in FIG. 10, the terminal device may include one or more terminal device processors 1001, memory 1002, communication interface 1003, transmitter 1005, receiver 1006, coupler 1007, and antenna 1008. These components may be connected through the bus 1004 or other types, and FIG. 10 uses the connection through the bus as an example. among them:

The communication interface 1003 may be used for communication between a terminal device and other communication devices, such as a network device or other terminal devices. Specifically, the network device may be the network device shown in FIG. 2. Specifically, the communication interface 1003 and the communication interface 903 may be a long-term evolution (LTE) (4G) communication interface, an Internet of Things communication interface, or a communication interface of 5G or a new air interface in the future. Not limited to a wireless communication interface, the terminal device may also be configured with a wired communication interface 1003 to support wired communication. For example, a backhaul link between a terminal device and other terminal devices may be a wired communication connection.

The transmitter 1005 may be configured to perform transmission processing on a signal output by the terminal device processor 1001, for example, signal modulation. The receiver 1006 may be configured to perform receiving processing on a mobile communication signal received by the antenna 1008. For example, signal demodulation. In some embodiments of the present application, the transmitter 1005 and the receiver 1006 may be regarded as one wireless modem. In the terminal device, the number of the transmitters 1005 and the receivers 1006 may be one or more. The antenna 1008 can be used to convert electromagnetic energy in a transmission line into electromagnetic waves in a free space, or convert electromagnetic waves in a free space into electromagnetic energy in a transmission line. The coupler 1007 can be used to divide the mobile communication signal into multiple channels and distribute the signals to multiple receivers 1006.

The memory 1002 is coupled to the terminal device processor 1001, and is configured to store various software programs and / or multiple sets of instructions. Specifically, the memory 1002 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more disk storage devices, flash memory devices, or other non-volatile solid-state storage devices. The memory 1002 may store an operating system (hereinafter referred to as a system), such as an embedded operating system such as uCOS, VxWorks, and RTLinux. The memory 1002 may also store a network communication program, which may be used to communicate with one or more additional devices, one or more terminal devices, and one or more terminal devices.

The terminal device processor 1001 can be used to perform wireless channel management, implement call and communication link establishment and removal, and provide cell switching control for users in the control area. Specifically, the terminal device processor 1001 may include: an Administration / Communication Module / Communication Module (AM / CM) (a center for voice channel exchange and information exchange), a Basic Module (Basic Module (BM) (for Complete call processing, signaling processing, wireless resource management, wireless link management, and circuit maintenance functions), code conversion and submultiplexing unit (Transcoder and SubMultiplexer (TCSM) (for complete multiplexing demultiplexing and code conversion functions )and many more.

In the embodiment of the present application, the terminal device processor 1001 may be configured to read and execute computer-readable instructions. In one embodiment, the terminal device processor 1001 may call a program in the memory 1002 to perform the following steps:

When there are at least two pieces of physical downlink shared channel PDSCH on the system bandwidth, determining channel information of the at least two pieces of PDSCH;

Determining priorities of the at least two PDSCHs according to respective channel information of the at least two PDSCHs;

The at least two PDSCH segments are detected according to the priority.

It can be understood that the terminal device processor 1001 may cooperate with other devices of the terminal device to implement the foregoing steps. For example, the channel information of at least two PDSCHs sent by the network device may be received through the communication interface 1003, and the terminal device processor 1001 determines the priorities of the at least two PDSCHs according to the channel information of the at least two PDSCHs. Of course, the above is merely an example, not an exhaustive one. The terminal device processing 1001 may also cooperate with devices such as the memory 1002, the transmitter 1006, and the receiver 1005.

It should also be noted that the terminal device processor 1001 may be used to call a program stored in the memory 1002, for example, a program for implementing a channel detection method provided by one or more embodiments of the present application on a terminal device side, and executing the program includes The instructions are not repeated here.

It can be understood that the terminal device may be the terminal device 202 in the system shown in FIG. 2 and may be implemented as a terminal device of FeMTC. Specifically, the terminal device may be a mobile device, a mobile station, a mobile unit, or an M2M terminal. , Wireless unit, remote unit, user agent, mobile client, etc.

It should be noted that the terminal device shown in FIG. 10 is only an implementation manner of the embodiment of the present application. In actual applications, the terminal device may further include more or fewer components, which is not limited herein.

It should be understood that the embodiments of the present invention are physical device embodiments corresponding to the method embodiments, and the description of the method embodiments is also applicable to the embodiments of the present invention.

In another embodiment of the present invention, a computer-readable storage medium is provided. The computer-readable storage medium stores a program. When the program is executed by a processor, the method shown in the terminal device in this application may be implemented, or The method shown in the terminal device.

It should be noted that, for a specific process performed by the processor on the computer-readable storage medium, refer to a method described in the foregoing method embodiment, and details are not described herein again.

In yet another embodiment of the present invention, a computer program product containing instructions is provided, which, when run on a computer, causes the computer to execute the method described in the above method embodiment.

The computer-readable storage medium may be an internal storage unit of the terminal device according to any of the foregoing embodiments, such as a hard disk or a memory of the terminal device. The computer-readable storage medium may also be an external storage device of the computer, such as a plug-in hard disk, a smart memory card (SMC), and a secure digital (SD) card provided on the computer. , Flash card (Flash card) and so on. Further, the computer-readable storage medium may include both an internal storage unit and an external storage device of the terminal device. The computer-readable storage medium is used to store the program and other programs and data required by the terminal. The computer-readable storage medium may also be used to temporarily store data that has been or will be output.

Based on the same inventive concept, the principle of the computer to solve the problem provided in the embodiment of the present invention is similar to that of the method embodiment of the present invention, so the implementation of the computer can refer to the method implementation. For brevity description, it will not be repeated here.

Those of ordinary skill in the art can understand that all or part of the processes in the method of the foregoing embodiment can be implemented by a program instructing related hardware. The above program can be stored in a computer-readable storage medium, and the program is being executed. In this case, the processes of the embodiments of the methods described above may be included. The storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM), or a random access memory (Random, Access Memory, RAM).

The channel detection method and related equipment provided by the embodiments of the present invention are described in detail above. Specific examples are used in this document to explain the principle and implementation of the present invention. The descriptions of the above embodiments are only used to help understand the present invention. The structure, method and core idea of the invention; meanwhile, for a person of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification is not It should be understood as limiting the present invention.

Claims

A channel detection method, comprising:

When there are at least two pieces of physical downlink shared channel PDSCH on the system bandwidth, determining channel information of the at least two pieces of PDSCH;

Determining priorities of the at least two PDSCHs according to channel information of the at least two PDSCHs;

Detecting the at least two PDSCH segments according to the priority.
The method according to claim 1, wherein the channel information of each of the at least two PDSCHs comprises: whether a machine type physical downlink control channel MPDCCH exists in a subframe in which the at least two PDSCHs are located;

The determining the priorities of the at least two PDSCHs according to the channel information of the at least two PDSCHs includes:

Determining that the priority of the target PDSCH in the at least two PDSCHs is the highest priority, and the target PDSCH is a PDSCH in which an MPDCCH exists in the subframe in which the target PDSCH is located;

The detecting the at least two PDSCH segments according to the priority includes:

The target PDSCH with the highest priority is selected for detection.
The method of claim 2, further comprising:

When detecting the target PDSCH, the MPDCCH on the subframe where the target PDSCH is located is detected.
The method according to claim 1, wherein the channel information of each of the at least two segments of PDSCH comprises: the number of resource blocks RB of each of the at least two segments of PDSCH;

The determining the priorities of the at least two PDSCHs according to the channel information of the at least two PDSCHs includes:

If the number of RBs of the first PDSCH in the at least two PDSCHs is greater than the number of RBs of the second PDSCH, it is determined that the priority of the first PDSCH is higher than the priority of the second PDSCH.
The method according to claim 1, wherein the channel information of each of the at least two sections of PDSCH comprises historical quality information of a frequency domain in which each of the at least two sections of PDSCH is located, and the historical quality information includes historical signal-to-noise Ratio and / or historical peak-to-average ratio;

The determining the priorities of the at least two PDSCHs according to the channel information of the at least two PDSCHs includes:

If the historical quality information of the frequency domain where the first PDSCH is located in the at least two PDSCHs is better than the historical quality information of the frequency domain where the second PDSCH is located, determining that the priority of the first PDSCH is higher than the priority of the second PDSCH .
The method according to claim 4 or 5, wherein the detecting the at least two PDSCH segments according to the priority comprises:

During the repetition period of the at least two PDSCHs, the at least two PDSCHs are detected in turn in order of priority from high to low.
The method according to claim 1, wherein the channel information of each of the at least two PDSCHs comprises: current channel quality of each of the at least two PDSCHs, and the current channel quality includes a current peak-to-average ratio and / Or the current signal-to-noise ratio;

The determining the channel information of each of the at least two PDSCHs includes:

Receiving the at least two PDSCHs in turn during the repetition period of the at least two PDSCHs;

Statistics on the current channel quality of the at least two PDSCH segments;

The determining the priorities of the at least two PDSCHs according to the channel information of the at least two PDSCHs includes:

If the current channel quality of the frequency domain where the first PDSCH is located in the at least two PDSCHs is better than the current channel quality of the frequency domain where the second PDSCH is located, determining that the priority of the first PDSCH is higher than the priority of the second PDSCH ;

The detecting the at least two PDSCH segments according to the priority includes:

The PDSCH with the highest priority is selected for detection.
A terminal device, comprising:

A first determining module, configured to determine channel information of each of the at least two PDSCHs when there are at least two pieces of physical downlink shared channel PDSCH on the system bandwidth;

A second determining module, configured to determine priorities of the at least two PDSCHs according to channel information of the at least two PDSCHs;

A detection module, configured to detect the at least two segments of PDSCH according to the priority.
The terminal device according to claim 8, wherein the channel information of each of the at least two PDSCHs comprises: whether a machine type physical downlink control channel MPDCCH exists in a subframe in which the at least two PDSCHs are located;

The second determining module is specifically configured to determine that the priority of the target PDSCH in the at least two PDSCHs is the highest priority, and the target PDSCH is a PDSCH in which a MPDCCH exists in a subframe;

The detection module is specifically configured to select a target PDSCH with the highest priority for detection.
The terminal device according to claim 9, wherein the detection module is further configured to detect an MPDCCH on a subframe where the target PDSCH is located when detecting the target PDSCH.
The terminal device according to claim 8, wherein the channel information of each of the at least two segments of PDSCH comprises: the number of resource blocks RB of each of the at least two segments of PDSCH;

The second determining module is specifically configured to determine that if the number of RBs of the first PDSCH in the at least two PDSCHs is greater than the number of RBs of the second PDSCH, the priority of the first PDSCH is higher than that of the second PDSCH. priority.
The terminal device according to claim 8, wherein the channel information of each of the at least two sections of PDSCH comprises historical quality information of a frequency domain in which each of the at least two sections of PDSCH is located, and the historical quality information includes historical information. Noise ratio and / or historical peak-to-average ratio;

The second determining module is specifically configured to determine if the historical quality information of the frequency domain where the first PDSCH is located in the at least two PDSCHs is better than the historical quality information of the frequency domain where the second PDSCH is located. The priority is higher than the priority of the second PDSCH.
The terminal device according to claim 11 or 12, wherein the detection module is specifically configured to detect the at least one of the PDSCHs in turn in the order of priority from the highest to the lowest within the repetition period of the at least two PDSCHs. Two PDSCH.
The terminal device according to claim 8, wherein the channel information of each of the at least two sections of PDSCH comprises: current channel quality of each of the at least two sections of PDSCH, and the current channel quality includes a current peak-to-average ratio and / Or the current signal-to-noise ratio;

The first determining module is specifically configured to receive the at least two PDSCHs in turn and count the current channel quality of the at least two PDSCHs in a repetition period of the at least two PDSCHs;

The second determining module is specifically configured to determine the quality of the first PDSCH if the current channel quality of the frequency domain where the first PDSCH is located in the at least two PDSCHs is better than the current channel quality of the frequency domain where the second PDSCH is located. The priority is higher than the priority of the second PDSCH;

The detection module is specifically configured to select a PDSCH with the highest priority for detection.
A terminal device, comprising:

Memory for storing programs;

A processor, configured to execute a program in the memory to perform the method according to any one of claims 1-7.
A computer-readable storage medium, characterized in that the computer-readable storage medium stores a program, and when the program is executed by a processor, causes the computer to execute the method according to any one of claims 1-7.