WO2015157958A1

WO2015157958A1 - Receiving device and acknowledgement/negative acknowledgement (ack/nack) transmitting method

Info

Publication number: WO2015157958A1
Application number: PCT/CN2014/075564
Authority: WO
Inventors: 汪凡; 马雪利
Original assignee: 华为技术有限公司
Priority date: 2014-04-17
Filing date: 2014-04-17
Publication date: 2015-10-22
Also published as: CN105309021A; CN105309021B

Abstract

A receiving device and acknowledgement/negative acknowledgement (ACK/NACK) transmitting method, the method comprising: before switching a time point, a receiving device decodes a data frame received from a transmitting device, and uses an on-off keying (OOK) mode to feed back ACK/NACK to the transmitting device according to the decoding result; after switching the time point, decoding a data frame received from the transmitting device, and using binary phase shift keying (BPSK) mode to feed back ACK/NACK to the transmitting device. Alternatively, no ACK/NACK is fed back before switching the time point, and BPSK mode or OOK mode is used to feed back ACK/NACK to the transmitting device after switching the time point. An embodiment of the present invention can reduce power consumption of a service channel by using different ACK/NACK feedback modes before and after time point switching.

Description

Receiving device and transmission method of response message

Technical field

The present invention relates to the field of communications technologies, and in particular, to a receiving device and a method for transmitting a response message. Background technique

The Universal Mobile Telecommunications System (UMTS) is the mainstream wireless communication standard developed by the Third Generation Partnership Project (3GPP). In order to meet the increasing rate requirements, High Speed Packet Access (HSPA) technology is introduced in UMTS. HSPA includes High Speed Downlink Packet Access (HSDPA) introduced in the R5 specification. Technology and Highspeed Uplink Packet Access (HSUPA) technology introduced in the R6 specification.

In the 3GPP R12 standard, the dedicated channel enhancement feature in the HSUPA transmission channel is being studied, and one of its characteristics is the uplink frame termination (FET). Specifically, referring to the schematic diagram of the uplink FET shown in FIG. 1 , the traditional uplink voice frame length is 20 ms (divided into 30 slot slots), and each uplink voice frame sent by the user equipment (User Equipment, UE for short) to the base station NodeB The NodeB attempts to decode the received voice data once every 1 or more slots. If the decoding fails, the NodeB sends an error response (Negative).

The Acknowledgement (NACK) is used to notify the UE to continue to transmit voice data. If the decoding is successful, the NodeB notifies the UE to stop transmitting the voice data by sending an Acknowledgement (ACK).

When the NodeB feeds back the response message (ACK/NACK) to the UE, it can use the Binary Phase Shift Keying (BPSK) method or the on-of-f keying (00K) method to feedback. . See the schematic diagram of the BPSK mapping mode shown in Figure 2 and the 00K mapping mode shown in Figure 3. The BPSK mode maps the ACK to 1 and the NACK to -1, while the 00K mode maps the ACK to 1 and maps the NACK to no. Discontinuous Transmission (DTX), DTX means no data is sent, where N _svmb()1 represents the number of symbols carrying ACK or NACK. For the FET detection of the uplink speech frame, when the NodeB uses the BPSK mode feedback response message, since the UE does not need to perform DTX detection, it is known in advance that the NodeB will be at each transmission time interval.

(Transmi ss ion time Interva l , abbreviated as TTI ) Internal feedback +1 or - 1, 1, when the feedback signal obtained by the UE is greater than 0 (such as 0.2), it can be considered as ACK, when the feedback signal acquired by the UE is less than 0 It can be considered as a NACK, so the UE can identify the response message fed back by the NodeB according to the lower received power. Correspondingly, the NodeB can also save a certain transmission power. However, the NodeB needs feedback response information in each TTI. Therefore, the NodeB needs to consume a certain amount of power in each TTI. When the NodeB uses the 00K mode to send a response message, the UE knows in advance that the NodeB will feed back +1 or Q in each TTI (0 is DTX, indicating no Sending, where the NodeB does not need to lose the transmit power when not transmitting, but when the NodeB feeds back +1 to the UE, the UE needs to perform a threshold decision to determine whether the NodeB feedback is +1 or 0, for example, feedback in the UE identification. When the signal is greater than the threshold (such as 0.5), it is considered as ACK. When the feedback signal recognized by the UE is less than the threshold, it is considered as NACK, because the threshold is required. Judging, the UE needs to consume a higher receiving power so that the identified ACK approaches +1 as close as possible. Accordingly, the NodeB also needs to consume a higher transmission power. Therefore, both of the above methods require high traffic channel power consumption. In addition, for the FET detection of the downlink speech frame, the above-mentioned defects are also present, and will not be described herein. Summary of the invention

A main object of the embodiments of the present invention is to provide a method for transmitting a receiving device and a response message, so as to reduce the power consumption of the traffic channel.

In order to solve the above technical problems, the technical solution drawn by the present invention is:

In a first aspect, the present invention provides a receiving device, including:

a first decoding module, configured to decode a data frame received from the sending device in a first time period, where the first time period is a period from before receiving the data frame to before a switching time point, The switching time point is a time point of converting the feedback mode of the response message;

a first response module, configured to feed back a response message to the sending device according to the decoding result of the first decoding module by using an open key control mode;

a second decoding module, configured to decode a data frame received from the sending device in a second time period, where the second time period is at least one time slot starting from the switching time point; The second response module is configured to feed back a response message to the sending device according to the decoding result of the second decoding module by using a binary phase shift keying BPSK mode.

In a first possible implementation manner of the first aspect, the receiving device further includes: a first switching point acquiring module, configured to acquire the switching time point;

The first switching point obtaining module is specifically configured to:

Obtaining a predefined switching time point from the receiving device;

Or, when the receiving device is a user equipment UE, acquiring, from the radio network controller RNC side, a pre-configured switching time point of the RNC or acquiring a pre-configured switching time point of the NodeB from the base station NodeB side; when the receiving device is a NodeB Obtaining a pre-configured switching time point of the RNC from the RNC side;

Or, when the receiving device is a UE, determining the switching time point according to a block error rate target value acquired from an RNC or a NodeB side, and a data frame receiving time slot corresponding to the block error rate target value; When the receiving device is a NodeB, determining the switching time point according to a block error rate target value acquired from the RNC side and a data frame receiving time slot corresponding to the block error rate target value;

Alternatively, before determining the switching time point, each time the data frame is decoded and the decoding result is obtained, determining that the decoding is successful from the start of receiving the data frame to obtaining the decoding result And determining, at the time when the decoding success rate reaches the preset value for the first time, the switching time point.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation, the first decoding module is specifically configured to use each preset time in the first time period. Pointing, decoding a data frame received from the transmitting device;

Each preset time point in the first time period includes: a time point when at least one time slot is separated in the first time period; or, in the first time period, from a preset The time point at which the number of time slots begins to be separated by at least one time slot.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a third possible implementation, the second decoding module is specifically configured to use each preset time in the second time period. Pointing, decoding a data frame received from the transmitting device;

Each preset time point in the second time period includes: a time point when at least one time slot is separated in the second time period; or, at least one time interval from the switching time point Time point of the gap, wherein the last time point is the BPSK of the second response module The mode feeds back the moment when the first correct response. In a second aspect, the present invention provides a receiving device, including:

a third decoding module, configured to decode a data frame received from the sending device in a third time period, where the third time period is at least one time slot from a switching time point, the switching time point Is the point in time at which the response message feedback mode is converted;

a third response module, configured to feed back a response message to the sending device according to a decoding result of the third decoding module by using a binary phase shift keying BPSK mode or an open key control 00K mode;

The acknowledgment module is configured to not feed back a response message to the sending device during a fourth time period, where the fourth time period is a period from before receiving the data frame to before the switching time point.

In a first possible implementation manner of the second aspect, the receiving device further includes: a second switching point acquiring module, configured to acquire the switching time point;

The second switching point obtaining module is specifically configured to:

Obtain a predefined switching time point from itself;

Or, when the receiving device is a user equipment UE, acquiring from a radio network controller RNC side

The pre-configured switching time point of the RNC or the NodeB pre-configured switching time point is obtained from the base station NodeB side; when the receiving device is a NodeB, the RNC pre-configured switching time point is obtained from the RNC side;

Or decoding, in the fourth time period, the data frame received from the sending device, after obtaining the decoding result, determining, from the start of receiving the data frame to obtaining the decoding result The decoding success rate is determined as the switching time point when the decoding success rate reaches the preset value for the first time.

With reference to the first possible implementation manner of the second aspect, in a second possible implementation, the second switching point acquiring module is specifically configured to use each preset time point in the fourth time period. Decoding a data frame received from the transmitting device; Each of the preset time points in the fourth time period includes: a time point when at least one time slot is separated in the fourth time period; or, in the fourth time period, from a preset The time point at which the number of time slots begins to be separated by at least one time slot.

With reference to the second aspect, or the first or second possible implementation manner of the second aspect, in a third possible implementation, the third decoding module is specifically configured to be used in the third time period. a preset time point for decoding a data frame received from the transmitting device;

Each preset time point in the third time period includes: a time point when at least one time slot is separated in the third time period; or, at least one time interval from the switching time point The time point of the gap, wherein the last time point is the time when the third response module feeds back the first correct response in the BPSK mode or the 00K mode. In a third aspect, the present invention provides a method for transmitting a response message, including:

The receiving device decodes the data frame received from the sending device in the first time period, and feeds back the response message to the sending device according to the decoding result, and the first time period is from the beginning. Receiving, by the data frame, a period before the switching time point, where the switching time point is a time point of converting the feedback mode of the response message;

Receiving, by the receiving device, the data frame received from the sending device in a second time period, and feeding back a response message to the sending device by using a binary phase shift keying BPSK manner according to the decoding result, where the second time The segment is at least one time slot from the start of the switching time point.

In a first possible implementation manner of the third aspect, the method further includes: receiving, by the receiving device, the switching time point;

The acquiring, by the receiving device, the switching time point, specifically includes:

The receiving device acquires a predefined switching time point from itself;

Or, when the receiving device is a user equipment UE, the receiving device acquires a pre-configured switching time point of the RNC from the radio network controller RNC side or acquires a pre-configured switching time point of the NodeB from the base station NodeB side; when the receiving device is a NodeB, receives The device acquires a pre-configured switching time point of the RNC from the RNC side;

Or, when the receiving device is a UE, the receiving device determines the switching time according to a block error rate target value acquired from an RNC or a NodeB side, and a data frame receiving time slot corresponding to the block error rate target value. When the receiving device is a NodeB, the receiving device determines the switching time point according to the block error rate target value acquired from the RNC side and the data frame receiving time slot corresponding to the block error rate target value;

Alternatively, the receiving device determines, before decoding the data frame and obtaining the decoding result, before determining the switching time point, determining a translation period from when the data frame is received to when the decoding result is obtained. The code success rate is determined as the switching time point when the decoding success rate reaches the preset value for the first time.

With reference to the third aspect, or the first possible implementation manner of the third aspect, in a second possible implementation manner, the receiving device, in the first time period, decodes a data frame received from the sending device, where Includes:

Receiving, by the receiving device, the data frame received from the transmitting device at each preset time point in the first time period;

With reference to the third aspect, or the first possible implementation manner of the third aspect, in a third possible implementation, the receiving device, in a second time period, decodes a data frame received from the sending device Specifically, including:

Receiving, by the receiving device, the data frame received from the transmitting device at each preset time point in the second time period;

Each preset time point in the second time period includes: a time point when at least one time slot is separated in the second time period; or, at least one time interval from the switching time point The time point of the gap, wherein the last time point is the time when the first correct response is fed back by the BPSK mode. In a fourth aspect, the present invention provides a method for transmitting a response message, including:

Receiving, by the receiving device, the data frame received from the transmitting device in a third time period, and feeding back a response message to the sending device according to the decoding result, using a binary phase shift keying BPSK mode or a keying key control 00K mode. The third time period is at least one time slot from the start of the switching time point, and the switching time point is a time point of the feedback response message feedback mode; The receiving device does not feed back a response message to the sending device during the fourth time period, and the fourth time period is a time period from the start of receiving the data frame to the switching time point.

In a first possible implementation manner of the fourth aspect, the method further includes: receiving, by the receiving device, the switching time point;

The receiving device acquires a predefined switching time point from itself;

Or, when the receiving device is a UE, the receiving device determines the switching time point according to a block error rate target value acquired from an RNC or NodeB side, and a data frame receiving time slot corresponding to the block error rate target value; When the device is a NodeB, the receiving device determines the switching time point according to the block error rate target value acquired from the RNC side and the data frame receiving time slot corresponding to the block error rate target value;

Alternatively, the receiving device decodes the data frame received from the sending device in the fourth time period, and after obtaining the decoding result, determining to start receiving the data frame to obtain the decoding result. The decoding success rate of the time period is determined as the switching time point when the decoding success rate reaches the preset value for the first time.

With reference to the first possible implementation manner of the fourth aspect, in a second possible implementation, the receiving device, in the fourth time period, decodes a data frame received from the sending device, specifically Includes:

Receiving, by the receiving device, the data frame received from the transmitting device at each preset time point in the fourth time period;

Each of the preset time points in the fourth time period includes: a time point when at least one time slot is separated in the fourth time period; or, in the fourth time period, from a preset The time point at which the number of time slots begins to be separated by at least one time slot.

With reference to the fourth aspect, or the first or the second possible implementation manner of the fourth aspect, in a third possible implementation, the receiving device performs the data frame received from the sending device in the third time period. Decoding, specifically includes: Receiving, by the receiving device, the data frame received from the transmitting device at each preset time point in the third time period;

Each preset time point in the third time period includes: a time point when at least one time slot is separated in the third time period; or, at least one time interval from the switching time point The time point of the gap, wherein the last time point is the time when the first correct response is fed back by the BPSK mode or the 00K mode.

The receiving device and the response message transmission method provided by the embodiment of the present invention use the 00K mode feedback response message before the switching time point, and use the BPSK mode feedback response message after the switching time point, because the feedback is before the switching time point. When the number of NACKs is large, and the mapping value of the NACK in the 00K mode is DTX (that is, the feedback message is not fed back), the power consumption of the traffic channel can be reduced to some extent, and the ACK is more feedback after the switching time point. Compared with the 00K mode, the power consumed by the BPSK transmission ACK is lower, so the power consumption of the traffic channel can be further reduced. Alternatively, the embodiment of the present invention does not feed back any response message before the handover time point, and uses the 00K mode or the BPSK mode to feedback the response message after the handover time point. Since no message is fed back before the handover time point, the traffic channel can also be reduced. Power consumption. 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 description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

1 is a schematic diagram of an upstream FET in the prior art;

2 is a schematic diagram of a BPSK mapping manner in the prior art;

3 is a schematic diagram of a 00K mapping manner in the prior art;

4 is a system architecture diagram of a transmitting device and a receiving device in an embodiment of the present invention; FIG. 5 is a schematic structural diagram of a receiving device according to an embodiment of the present invention;

6 is a schematic diagram of comparison between decoding success rate and decoding time in an embodiment of the present invention;

7 is a schematic diagram of switching of a response mode in an embodiment of the present invention;

FIG. 8 is another schematic structural diagram of a receiving device according to an embodiment of the present invention; FIG. 9 is a second schematic diagram of switching of a response mode in an embodiment of the present invention;

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

FIG. 11 is a schematic diagram of another structure of a receiving device according to an embodiment of the present invention; FIG.

12 is a schematic flowchart of a method for transmitting a response message according to an embodiment of the present invention;

FIG. 13 is another schematic flowchart of a method for transmitting a response message in an embodiment of the present invention. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

A receiving device and a method for transmitting a response message according to an embodiment of the present invention are applicable to the system architecture diagram of the sending device 401 and the receiving device 402 shown in FIG. When the user equipment sends the uplink data to the base station NodeB, the sending device 401 is the UE and the receiving device 402 is the NodeB; when the NodeB sends the downlink data to the UE, the sending device 401 is the NodeB and the receiving device 402 is the UE. In the working process, the sending device 401 sends a data frame to the receiving device 402 through a dedicated physical data channel (DPD), for example: the data frame may be Voice frame), during receiving the data frame, the receiving device 402 attempts to decode the received portion of the data frame multiple times. If the decoding is incorrect, the error acknowledgment (NACK) message is fed back to the sending device 401, so that the sending device 401 continues to send the data frame; if the decoding is successful, the correct feedback is sent to the sending device 401. In response to the Acknowledgement (ACK) message, the transmitting device 401 may stop or continue the transmission of the data frame after receiving the ACK message. Since a certain traffic channel power is consumed during the transmission of the data frame, and the purpose of the embodiment of the present invention is to further reduce the power consumption of the traffic channel, various embodiments of the present invention are specifically described below. FIG. 5 is a schematic structural diagram of a receiving device according to Embodiment 1 of the present invention, where the receiving device 500 specifically includes: a first decoding module 501, configured to decode, in a first time period, a data frame received from a sending device, where the first time period is a period from before receiving the data frame to before a switching time point, where The switching time point is the time point of the conversion response message feedback mode.

In the embodiment of the present invention, the first decoding module 501 is specifically configured to: decode, at each preset time point in the first time period, a data frame received from the sending device; Each preset time point in the first time period includes: a time point when at least one time slot is separated in the first time period; or, in the first time period, from a preset number of times The time slot at which the gap begins at least one time slot.

The first response module 502 is configured to feed back a response message to the sending device according to the decoding result of the first decoding module 501 by using an open key control mode.

The second decoding module 503 is configured to decode the data frame received from the sending device in a second time period, where the second time period is at least one time slot from the switching time point.

In the embodiment of the present invention, the second decoding module 502 is specifically configured to decode a data frame received from the sending device at each preset time point in the second time period; Each preset time point in the second time period includes: a time point when at least one time slot is separated in the second time period; or, when at least one time slot is separated from the switching time point The time point, wherein the last time point is the time when the second response module 504 feeds back the first correct response by using the BPSK mode.

The second response module 504 is configured to feed back a response message to the sending device according to the decoding result of the second decoding module 503 by using a binary phase shift keying BPSK mode. Further, the receiving device 500 further includes: a first switching point obtaining module 505, configured to obtain the switching time point. The first switching point obtaining module 505 can obtain the switching time point by using any one of the following methods:

Method 1. Obtain a predefined switching time point from the receiving device.

For mode 1, a switching time point, such as 10s lo t, can be preset in the network protocol, so that the receiving device can acquire the network predefined switching time point 10s lot from itself.

In the mode 2, when the receiving device is the user equipment UE, the RNC pre-configured switching time point is obtained from the radio network controller RNC side or the NodeB pre-configured switching is obtained from the base station NodeB side. Time point; when the receiving device is a NodeB, the RNC pre-configured switching time point is acquired from the RNC side.

For mode 2, because according to the decoding mechanism, the network can pre-calculate the decoding success rate of the data frame at each time point of the receiving device during the receiving period (ie, from the start of receiving the data frame to a certain time point) The probability of decoding success), so the RNC or NodeB can select a time point corresponding to the preset decoding success rate in the data frame receiving period, and select the selected time point (such as lOslot) as the switching time of the response feedback mode. point.

Mode 3, when the receiving device is a UE, determining the switching time point according to a block error rate target value acquired from an RNC or a NodeB side, and a data frame receiving time slot corresponding to the block error rate target value; When the receiving device is a NodeB, the switching time point is determined according to a block error rate target value acquired from the RNC side and a data frame receiving time slot corresponding to the block error rate target value.

For mode 3, when the receiving device is a UE, the RNC or the NodeB sends a block error rate target value BLER_target and a data frame corresponding to the BLER_target to the UE: the time slot T_target, or only sends a fault to the UE. The block rate target value BLER_target (the data frame receiving time slot T_target corresponding to the BLER_target is a default value at this time), at this time, the receiving device can determine a data frame reception according to 81^11_1& 61 and 1&^61 based on the decoding mechanism. Corresponding relationship between the gap and the data frame decoding success rate, so that the receiving device can determine the receiving time slot corresponding to the preset decoding success rate according to the corresponding relationship, and use the determined receiving time slot as the switching time point; When it is a NodeB, the implementation mechanism is the same, and will not be described here.

For example, refer to the schematic diagram of the decoding success rate and the decoding time shown in FIG. 6.

In the left figure, BLER_target=0.01, T_target=15s lot, in the right picture, BLER_target=0.01, T_target=30s lot. 4 The data frame is a speech frame (frame length is 30slot), and the data frame receives the time slot. See the curve in the figure for the correspondence between the data frame decoding success rate, where the dotted line represents no sound data in the voice frame, the solid line represents the sound data in the voice frame, and the curve PA3 and the curve VA30 correspond to different Channel performance. In the figure on the left, when T_target=15slot, the receiving device has a decoding success rate of 99% for the speech frame (ie, BLER.target is 0.01), and the default decoding success rate is 10% and VA30 Full is used. For the curve, the left graph is available. The 10% success rate corresponds to the 5th time slot of the VA30 Full curve, so the 5th time slot can be used as the switching time point of the response feedback mode. In the image to the right, when T_target=30slot When the receiving device has a decoding success rate of 99% for the speech frame (ie, BLER_target is 0.01), and the preset decoding success rate is 10% and the VA30 Full curve is used, the query is available on the right image, 10%. The success rate corresponds to the 10th time slot of the VA30 Full curve, so the 10th time slot can be used as the switching time point of the response feedback mode. Therefore, in actual application, a graph or a mathematical model corresponding to the curve PA3 or the curve VA30 may be configured in advance for the receiving device, and then the preset decoding is obtained by querying the graph or mathematical calculation according to the preset decoding success rate. The time slot corresponding to the success rate, and the time slot is used as the switching time point of the response feedback mode.

Manner 4: Before determining the switching time point, each time the data frame is decoded and the decoding result is obtained, determining, from the start of receiving the data frame to obtaining the decoding result, decoding The success rate is determined as the switching time point when the decoding success rate reaches the preset value for the first time.

For mode 4, it is assumed that the first decoding module 501 performs decoding once after receiving the frame data of one slot, and after decoding the decoding result, the decoding is successfully determined according to the current decoding result and the previous decoding result. Rate, once the decoding success rate reaches the preset value, the time is taken as the switching time point.

It can be seen that the differences between the above modes are: modes 1, 2 and 3 are to acquire the switching time point before receiving the data frame, and mode 4 is to determine the decoding success rate according to each acquisition during the receiving data frame. The switching time point is described. In order to understand the above first embodiment more conveniently, the following examples are illustrated:

See one of the switching diagrams of the response mode shown in Figure 7. Assuming that the receiving device is a base station

Node B, the sending device is a user equipment UE, and the UE sends an uplink data frame (such as a voice frame, a typical voice frame length is 20 ms, that is, 30 slots) to the NodeB through the dedicated physical data channel DPDCH. The main common control physical channel in the figure (Primary Common Control Physical Channel, P-CCPCH for short) The frame length is 10ms (38400 chips), which is divided into 15 slot slots, which is the timing reference of the downlink channel frame. If the switching time point acquired by the first switching point obtaining module 505 is the slot1O on the NodeB side, before the slot10, the NodeB uses the 00K mode to feed back the ACK/NACK to the UE. Starting from the slotlO, the NodeB uses the BPSK mode to feed back to the UE. ACK/NACK. The specific implementation process is as follows: Before slot1O, it is assumed that the NodeB attempts to decode the received data frame once every time interval, and feeds the ACK/NACK to the UE in the 00K manner. Specifically, if the UE side s lot 0 sends the uplink. After the data is received by the slotO on the NodeB side, the NodeB decodes the received data in the slot 0 after the completion of the reception, and feeds back the ACK/NACK to the UE after the decoding ends; if the uplink data sent by the s lot of the UE side is in the NodeB After the slotl of the side completes the reception, the NodeB decodes the received data in the slotO-slotl after the completion of the reception, and feeds back the ACK/NACK to the UE after the decoding ends, ...; if the slot 9 of the UE side The transmitted uplink data is received in slot 9 on the NodeB side, and after completion of the reception, the NodeB decodes the received data in slot0-slot9 and feeds back ACK/NACK to the UE after the decoding ends. Alternatively, the NodeB attempts to decode the received data frame once every one or more time slots after setting a number of time slots (for example, starting at the 5th time slot), and feeds back ACK/NACK to the UE in the 00K manner. The working method is the same as above, and will not be repeated here.

It is assumed that the NodeB attempts to decode the received data frame once every slot 1O and slot1O, and feeds back the ACK/NACK to the UE in the BPSK mode. Specifically, if the uplink data sent by the slot 1O on the UE side is in the slot1 of the NodeB side. After the completion of the reception, the NodeB decodes the received data in the slotO-slotlO after the completion of the reception, and feeds back the ACK/NACK to the UE after the decoding ends; if the uplink data sent by the slotll of the UE side is received in the slot of the NodeB side, Then, after completing the reception, the NodeB decodes the received data in the slotO-slotll and feeds back the ACK/NACK to the UE after the decoding ends. Or, starting from slotlO, the NodeB attempts to decode once in each receiving time slot and feeds back ACK/NACK to the UE until the first ACK is fed back by using the BPSK mode. The specific working mode is the same as above, and details are not described herein again. .

It can be understood that the transmission length of the ACK/NACK message may be one or more time slots, and may be, for example, an enhanced dedicated channel hybrid automatic repeat request indication channel (E-DCH Hybrid ARQ Indicator Channel, E-HICH for short). The transmission length of the ACK/NACK message may also be one or more symbols, and is carried by a channel such as Transmit Power Control (TPC).

In the first embodiment of the present invention, in a receiving period of a data frame (that is, the receiving device receives the data frame from the beginning to the receiving of the completed data frame), the decoding success rate of the received data by the receiving device will gradually increase, so In the early stage of receiving, the receiving device feeds back more NACK messages to the sending device, and in the later stage of receiving, the receiving device feeds back more ACK messages to the sending device. Therefore, the 00K mode feedback response message can be used before the switching time point. After switching the time point, the BPSK mode feedback response message is used. The reason for the feedback message in the above manner is: due to feedback before the switching time point The number of NACKs is large, and the mapping value of the NACK in the 00K mode is DTX (that is, the feedback message is not fed back), so the power consumption of the traffic channel can be reduced to some extent, and the ACK is fed back after the switching time point. Moreover, compared with the 00K mode, the power consumed by the BPSK transmission ACK is lower, so the power consumption of the traffic channel can be further reduced.

In hardware implementation, the above modules may be embedded in the hardware of the receiving device in hardware, or may be stored in a software, such as a memory of the UE, so that the processor calls to execute the above modules. Operation. The processor can be a central processing unit (CPU), a microprocessor, a microcontroller, or the like. FIG. 8 is a schematic structural diagram of a receiving device according to Embodiment 2 of the present invention. The receiving device 800 specifically includes:

a third decoding module 801, configured to decode, in a third time period, a data frame received from the sending device, where the third time period is at least one time slot from a switching time point, the switching time The point is the time in the entire reception period of the data frame.

In the embodiment of the present invention, the third decoding module 801 is specifically configured to: decode, at each preset time point in the third time period, a data frame received from the sending device; Each preset time point in the third time period includes: a time point when at least one time slot is separated in the third time period; or, when at least one time slot is separated from the switching time point The time point, wherein the last time point is the time when the third response module 802 feeds back the first correct response by using the BPSK mode or the 00K mode.

The third response module 802 is configured to feed back a response message to the sending device according to the decoding result of the third decoding module by using a binary phase shift keying BPSK mode or an open key control 00K mode.

The anti-response module 803 is configured to not feed back a response message to the sending device during a fourth time period, where the fourth time period is a period from the start of receiving the data frame to the switching time point.

Further, the receiving device 800 further includes: a second switching point obtaining module 803, configured to acquire the switching time point; and the second switching point obtaining module 803 may obtain the switching time point by using any one of the following manners :

Method 1. Obtain a predefined switching time point from itself.

Manner 2, when the receiving device is a user equipment UE, obtained from a radio network controller RNC side Taking the pre-configured switching time point of the RNC or acquiring the pre-configured switching time point of the NodeB from the base station NodeB side; when the receiving device is the NodeB, the RNC pre-configured switching time point is acquired from the RNC side.

Method 4: Decode a data frame received from the sending device in a fourth time period, and after obtaining the decoding result, determine a translation period from when the data frame is received to when the decoding result is obtained. The code success rate is determined as the switching time point when the decoding success rate reaches the preset value for the first time.

The second switching point acquiring module is specifically configured to decode, according to each preset time point in the fourth time period, a data frame received from the sending device, where the fourth time period is Each preset time point includes: a time point when the at least one time slot is separated in the fourth time period; or, in the fourth time period, at least a preset interval of time slots The time point in a time slot.

For the related description of the foregoing modes, refer to the first embodiment, and details are not described herein.

In order to understand the above second embodiment more conveniently, the following examples are illustrated:

See Figure 2 for the switching diagram of the response mode shown in Figure 9. Assuming that the receiving device is a base station

Node B, the sending device is a user equipment UE, and the UE sends an uplink data frame (such as a voice frame, a typical voice frame length is 20 ms, that is, 30 slots) to the NodeB through the dedicated physical data channel DPDCH. The main common control physical channel in the figure (Primary Common Control Physical Channel, P-CCPCH for short) The frame length is 10ms (38400 chips), which is divided into 15 slot slots, which is the timing reference of the downlink channel frame. If the switching time point acquired by the second switching point acquisition module 803 is slot 5 on the NodeB side, the NodeB does not feed back the ACK/NACK to the UE before the slot 5, and the NodeB uses the BPSK mode or the 00K mode to feed back to the UE. ACK/NACK. The specific implementation process is as follows: Assume that the NodeB attempts to decode the received data frame once every slot 1 and slot 5, and feeds the ACK/NACK to the UE in the 00K mode or the BPSK mode. Specifically, if the UE side The uplink data sent by the s lot 5 is received on the s lot 5 of the NodeB side, and after the reception is completed,

NodeB decodes the received data in s lot 0-s lot5 and feeds back to the UE after decoding

ACK/NACK; if the uplink data sent by the slot 6 of the UE side is received at the sink 6 of the NodeB side, the NodeB decodes the received data in the s lot 0-s lot6 after the reception is completed and ends at the decoding. The backward UE feeds back ACK/NACK, .... Or, starting from s lot 4, the NodeB attempts to decode once in each receiving time slot and feeds back ACK/NACK to the UE until the first ACK is fed back by using the 00K or the BPSK mode, and the specific working manner is the same as above. , will not repeat them here.

It can be understood that the transmission length of the ACK/NACK message may be one or more time slots, and by, for example, an enhanced dedicated channel hybrid automatic repeat request indication channel (E-DCH Hybrid ARQ Indica tor Channe l , referred to as E- HICH) is carried by the same channel; the transmission length of the ACK/NACK message may also be

1 or more symbols, and such as Transmi t Power Control (referred to as Transmit Power Control)

TPC) is carried by the same channel.

In the second embodiment of the present invention, in a receiving period of a data frame (that is, the receiving device receives the data frame from the beginning to the receiving of the completed data frame), the decoding success rate of the received data by the receiving device will gradually increase, so In the early stage of receiving, no response message is sent back to the sending device, and only in the later stage of receiving, the 00K mode or BPSK mode is used to feedback the response message. Since the message is not fed back in the early stage of receiving, the power consumption of the traffic channel can be reduced.

In hardware implementation, the above modules may be embedded in the hardware of the receiving device in hardware, or may be stored in a software, such as a memory of the UE, so that the processor calls to execute the above modules. Operation. The processor can be a central processing unit (CPU), a microprocessor, a microcontroller, or the like. Further, the embodiment of the present invention further provides a configuration of the receiving device 1000 and the receiving device 1100, respectively. A transmitter, a receiver, a processor, at least one network interface or other communication interface, a memory, and at least one communication bus may be included for enabling connection communication between the devices. A transmitter is used to transmit data, a receiver is used to receive data, and a processor is used to execute an executable module, such as a computer program, stored in the memory. The memory may include a high speed random access memory (RAM: Random Acces s Memory), and may also include a non-vola ti le memory, such as at least one disk memory. Through at least one network interface (can be wired or Wireless) The communication connection between the system gateway and at least one other network element can be implemented, and the Internet, the wide area network, the local network, the metropolitan area network, etc. can be used.

Referring to FIG. 10, it is a schematic diagram of a configuration of a receiving device 1 000 according to Embodiment 3 of the present invention. In some embodiments, program instructions are stored in a memory, and the program instructions may be executed by a processor, a transmitter, and a receiver. among them,

a processor, configured to decode, by the receiver, a data frame received by the receiver from the sending device, where the first time period is a period from before starting to receive the data frame to a switching time point, the switching The time point is the time point of the feedback response message feedback mode;

a transmitter, configured to feed back a response message to the sending device according to the decoding result of the first decoding module by using an open key control mode;

a processor, configured to decode, by the receiver, a data frame received by the receiver from the sending device, where the second time period is at least one time slot from the switching time point;

a transmitter, configured to perform binary phase shift keying according to a decoding result of the second decoding module

The BPSK mode feeds back a response message to the transmitting device.

In some embodiments of the present invention, the receiver is further configured to acquire the switching time point; specifically: acquiring a predefined switching time point from the receiving device;

In some embodiments of the present invention, the processor is specifically configured to decode, at each preset time point in the first time period, a data frame received from the sending device, where Temporarily Each preset time point in the interval includes: a time point when the at least one time slot is separated in the first time period; or, in the first time period, starting from a preset number of time slots The time point when at least one time slot is spaced.

In some embodiments of the present invention, the processor is specifically configured to decode, at each preset time point in the second time period, a data frame received from the sending device, where Each preset time point in the second time period includes: a time point when at least one time slot is separated in the second time period; or a time point when at least one time slot is separated from the switching time point The last time point is the time when the second response module uses the BPSK mode to feed back the first correct response. Referring to FIG. 11, another schematic configuration diagram of a receiving device 1100 according to Embodiment 4 of the present invention is provided. In some embodiments, program instructions are stored in a memory, and the program instructions may be executed by a processor, a transmitter, and a receiver. among them:

a processor, configured to decode, by the receiver, a data frame received by the receiver from the sending device, where the third time period is at least one time slot from a switching time point, where the switching time point is The point in time at which the response message feedback mode is converted;

a transmitter, configured to feed back a response message to the sending device according to a decoding result of the third decoding module by using a binary phase shift keying BPSK mode or an open key control 00K mode;

And a transmitter, configured to not feed back a response message to the sending device during a fourth time period, where the fourth time period is a period from before receiving the data frame to before the switching time point.

Or, when the receiving device is a UE, determining the switching time point according to a block error rate target value acquired from an RNC or a NodeB side, and a data frame receiving time slot corresponding to the block error rate target value; When the receiving device is a NodeB, according to the block error rate target value obtained from the RNC side, and Determining, by the data frame receiving time slot corresponding to the error block rate target value, the switching time point;

In some embodiments of the present invention, the processor is specifically configured to decode a data frame received from the sending device at each preset time point in the fourth time period; Each preset time point in the fourth time period includes: a time point when at least one time slot is separated in the fourth time period; or, in the fourth time period, from a preset number of times The time slot at which the gap begins at least one time slot.

In some embodiments of the present invention, the processor is specifically configured to decode, at each preset time point in the third time period, a data frame received from the sending device, where Each preset time point in the three time period includes: a time point when at least one time slot is separated in the third time period; or a time point when at least one time slot is separated from the switching time point The last time point is the time when the third response module feeds back the first correct response by using the BPSK mode or the 00K mode. The receiving device in the embodiment of the present invention has been described above. The following describes the method for transmitting the response message in the embodiment of the present invention. For related information, refer to the foregoing device embodiment.

FIG. 12 is a schematic flowchart of a method for transmitting a response message provided by five according to an embodiment of the present invention, where the method includes the following steps:

Step 1201: The receiving device decodes the data frame received from the sending device in the first time period, and sends a response message to the sending device according to the decoding result, using the open key control 00K manner, the first time period. It is a time period from the start of receiving the data frame to the switching time point, and the switching time point is a time point of the feedback response message feedback mode.

In the embodiment of the present invention, the "receiving device decodes the data frame received from the transmitting device in the first time period" in step 1201 can be implemented as follows:

The receiving device decodes the data frame received from the sending device at each preset time point in the first time period; wherein each preset time point in the first time period includes: the first Time a time point when each time interval is at least one time slot; or, in the first time period, a time point when at least one time slot is separated from a preset number of time slots.

Step 1202: The receiving device decodes the data frame received from the sending device in a second time period, and returns a response message to the sending device by using a binary phase shift keying BPSK manner according to the decoding result. The second time period is at least one time slot from the start of the switching time point.

In the embodiment of the present invention, the "receiving device decodes the data frame received from the transmitting device in the second time period" in step 1202 can be implemented as follows:

The receiving device decodes the data frame received from the sending device at each preset time point in the second time period; wherein each preset time point in the second time period includes: a time point when at least one time slot is separated in the second time period; or a time point when at least one time slot is separated from the switching time point, wherein the last time point is the BPSK mode feedback The moment when the first one is correctly answered.

Further, the method further includes: the receiving device acquiring the switching time point; and acquiring the switching time point according to one of the following manners:

Method 1. The receiving device acquires a predefined switching time point from itself.

Mode 2: When the receiving device is a user equipment UE, the receiving device acquires a pre-configured switching time point of the RNC from the radio network controller RNC side or acquires a pre-configured switching time point of the NodeB from the base station NodeB side; when the receiving device is a NodeB, The receiving device acquires a pre-configured switching time point of the RNC from the RNC side.

Mode 3: When the receiving device is a UE, the receiving device determines the switching time point according to a block error rate target value acquired from an RNC or NodeB side, and a data frame receiving time slot corresponding to the block error rate target value; When the receiving device is a NodeB, the receiving device determines the switching time point according to the block error rate target value acquired from the RNC side and the data frame receiving time slot corresponding to the block error rate target value.

Manner 4: Before determining the switching time point, each time the data frame is decoded and the decoding result is obtained, determining, by the receiving device, starting from receiving the data frame to obtaining the decoding result The decoding success rate is determined as the switching time point when the decoding success rate reaches the preset value for the first time. Referring to FIG. 13, a flow chart of another method for transmitting a response message according to Embodiment 6 of the present invention is shown. Intention, the method includes the following steps:

Step 1 301: The receiving device decodes the data frame received from the sending device in a third time period, and feeds back to the sending device according to the decoding result by using a binary phase shift keying BPSK mode or a keying key control 00K mode. The response message, the third time period is at least one time slot from the start of the switching time point, and the switching time point is a time point of the feedback response message feedback mode; wherein, the receiving device does not go to the fourth time period The sending device returns a response message, and the fourth time period is a period from before starting to receive the data frame to before the switching time point.

In the embodiment of the present invention, the "receiving device decodes the data frame received from the transmitting device in the third time period" in step 1 301 can be implemented as follows:

The receiving device decodes the data frame received from the sending device at each preset time point in the third time period; wherein each preset time point in the third time period includes: a time point when at least one time slot is separated in the third time period; or a time point when at least one time slot is separated from the switching time point, wherein the last time point is the BPSK mode or The 00K mode feeds back the moment when the first correct answer.

Mode 4: The receiving device decodes the data frame received from the sending device in a fourth time period, and after obtaining the decoding result, determining a period from when the data frame is started to be received to the decoding result. The decoding success rate is determined as the switching time point when the decoding success rate reaches the preset value for the first time. In the mode 4, the receiving device decodes the data frame received from the sending device at each preset time point in the fourth time period; wherein each preset time in the fourth time period is The point includes: a time point when the at least one time slot is separated in the fourth time period; or, in the fourth time period, a time point when at least one time slot is separated from a preset number of time slots .

The method for transmitting the response message provided by the embodiment of the present invention uses the 00K mode to feed back the response message before the switching time point, and uses the BPSK mode feedback response message after the switching time point, because more NACKs are fed back before the switching time point. When the 00K mode is used, the mapping value of the NACK is DTX (that is, the feedback message is not fed back), so the power consumption of the traffic channel can be reduced to some extent, and the ACK is fed back after the switching time point, and the 00K mode is Compared with the power consumed by transmitting the ACK in the BPSK mode, the power consumption of the traffic channel can be further reduced. Alternatively, the embodiment of the present invention does not feed back any response message before the switching time point, and uses the 00K mode or the BPSK mode to feedback the response message after the switching time point. Since no message is fed back before the switching time point, the traffic channel can also be reduced. Power consumption.

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

In the several embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the modules or sub-modules is only a logical function division. In actual implementation, there may be another division manner, such as multiple modules or components. It can be combined or integrated into another system, or some features can be ignored, or not executed. Alternatively, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect engagement or communication connection through some interface, device or module, and may be in electrical, mechanical or other form.

The modules described as separate components may or may not be physically separated. The components displayed as modules may or may not be physical modules, that is, may be located in one place, or may be distributed to multiple network modules. You can choose some of them according to actual needs or All modules are used to achieve the objectives of the solution of the embodiment.

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

The integrated modules, if implemented in the form of software functional modules and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application, in essence or the contribution to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. The instructions include a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a USB flash drive, a removable hard disk, a read-only memory (ROM), a random access memory (RAM, Random Acces s Memory), a magnetic disk, or an optical disk, and the like, which can store program codes. Medium.

The above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that The technical solutions described in the embodiments are modified, or some of the technical features are equivalently replaced; and the modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

Rights request

1. A receiving device, characterized in that it includes:

The first decoding module is used to decode the data frame received from the sending device within a first time period, the first time period being the period from the beginning of receiving the data frame to the switching time point, the The switching time point is the time point when the response message feedback mode is switched;

A first response module, configured to feedback a response message to the sending device in a switch keying 00K manner according to the decoding result of the first decoding module;

A second decoding module, configured to decode the data frame received from the sending device within a second time period, where the second time period is at least one time slot starting from the switching time point;

The second response module is configured to feedback a response message to the sending device in a binary phase shift keying BPSK method according to the decoding result of the second decoding module.

2. The receiving device according to claim 1, characterized in that the receiving device further includes: a first switching point acquisition module, configured to acquire the switching time point;

The first switching point acquisition module is specifically used for:

Obtain a predefined switching time point from the receiving device;

Or, when the receiving device is a user equipment UE, obtain the RNC pre-configured switching time point from the radio network controller RNC side or obtain the NodeB pre-configured switching time point from the base station NodeB side; when the receiving device is a NodeB , Obtain the RNC pre-configured switching time point from the RNC side;

Or, when the receiving device is a UE, the switching time point is determined based on the block error rate target value obtained from the RNC or NodeB side and the data frame reception time slot corresponding to the block error rate target value; When the receiving device is a NodeB, the switching time point is determined based on the block error rate target value obtained from the RNC side and the data frame reception time slot corresponding to the block error rate target value;

Alternatively, before determining the switching time point, each time the data frame is decoded and the decoding result is obtained, it is determined that the decoding is successful in the period from the beginning of receiving the data frame to the acquisition of the decoding result. rate, the moment when the decoding success rate reaches the preset value for the first time is determined as the switching time point.

3. The receiving device according to claim 1 or 2, characterized in that the first decoding module is specifically configured to, at each preset time point within the first time period, The data frame is decoded; Wherein, each preset time point in the first time period includes: a time point at least one time slot interval in the first time period; or, within the first time period, from the preset time point The number of timeslots starts at a point in time every at least one timeslot apart.

4. The receiving device according to claim 1 or 2, characterized in that the second decoding module is specifically configured to, at each preset time point within the second time period, The data frame is decoded;

Wherein, each preset time point in the second time period includes: a time point every at least one time slot interval in the second time period; or, at least one time interval every time starting from the switching time point. The last time point is the time when the second response module uses the BPSK method to feedback the first correct response.

5. A receiving device, characterized in that it includes:

The third decoding module is used to decode the data frame received from the sending device in the third time period, the third time period is at least one time slot starting from the switching time point, the switching time point It is the time point to switch the response message feedback mode;

A third response module, configured to feedback a response message to the sending device using binary phase shift keying (BPSK) or switch keying (00K) based on the decoding result of the third decoding module;

A response disabling module is configured to not feed back a response message to the sending device within a fourth time period, where the fourth time period is a period from the beginning of receiving the data frame to before the switching time point.

6. The receiving device according to claim 5, characterized in that the receiving device further includes: a second switching point acquisition module, configured to acquire the switching time point;

The second switching point acquisition module is specifically used for:

Get the predefined switching time point from itself;

Or, decode the data frame received from the sending device within the fourth time period, and after obtaining the decoding result, determine the period from starting to receive the data frame to obtaining the decoding result. Decoding success rate, the moment when the decoding success rate reaches a preset value for the first time is determined as the switching time point.

7. The receiving device according to claim 6, characterized in that, the second switching point acquisition module is specifically used to obtain information from the sending device at each preset time point in the fourth time period. Decode the received data frame;

Wherein, each preset time point in the fourth time period includes: a time point every at least one time slot interval in the fourth time period; or, in the fourth time period, from the preset time point The number of timeslots starts at a point in time every at least one timeslot apart.

8. The receiving device according to any one of claims 5 to 7, characterized in that the third decoding module is specifically used to perform the decoding from the said third time period at each preset time point in the third time period. Decode the data frames received by the sending device;

Wherein, each preset time point in the third time period includes: a time point every at least one time slot interval in the third time period; or, at least one time interval every time starting from the switching time point. The time point of the slot, where the last time point is the time when the third response module uses the BPSK mode or the 0OK mode to feedback the first correct response.

9. A method of transmitting a response message, characterized by including:

The receiving device decodes the data frame received from the sending device within a first time period, and uses the switch keying 0OK method to feed back a response message to the sending device according to the decoding result. The first time period is from the beginning. The period from receiving the data frame to the switching time point, where the switching time point is the time point for switching the response message feedback mode;

The receiving device decodes the data frame received from the sending device within a second time period, and uses binary phase shift keying BPSK to feed back a response message to the sending device according to the decoding result, the second time A segment is at least one time slot starting from the switching time point.

10. The method according to claim 9, characterized in that, the method further includes: receiving The device obtains the switching time point;

The receiving device obtains the switching time point, which specifically includes:

The receiving device obtains the predefined switching time point from itself;

Or, when the receiving device is the user equipment UE, the receiving device obtains the RNC pre-configured switching time point from the radio network controller RNC side or obtains the NodeB pre-configured switching time point from the base station NodeB side; when the receiving device is a NodeB, receive The device obtains the RNC pre-configured switching time point from the RNC side;

Or, when the receiving device is a UE, the receiving device determines the switching time point based on the block error rate target value obtained from the RNC or NodeB side and the data frame reception time slot corresponding to the block error rate target value; when receiving When the device is a NodeB, the receiving device determines the switching time point based on the block error rate target value obtained from the RNC side and the data frame reception time slot corresponding to the block error rate target value;

Alternatively, before determining the switching time point, the receiving device determines the decoding period from the beginning of receiving the data frame to obtaining the decoding result each time it decodes the data frame and obtains the decoding result. Decoding success rate, the moment when the decoding success rate reaches a preset value for the first time is determined as the switching time point.

11. The method according to claim 9 or 10, characterized in that the receiving device decodes the data frame received from the sending device within the first time period, specifically including:

The receiving device decodes the data frame received from the sending device at each preset time point within the first time period;

Wherein, each preset time point in the first time period includes: a time point at least one time slot interval in the first time period; or, within the first time period, from the preset time point The number of timeslots starts at a point in time every at least one timeslot apart.

12. The method according to claim 9 or 10, characterized in that the receiving device decodes the data frame received from the sending device within the second time period, specifically including:

The receiving device decodes the data frame received from the sending device at each preset time point within the second time period;

Wherein, each preset time point in the second time period includes: a time point every at least one time slot interval in the second time period; or, at least one time interval every time starting from the switching time point. The time point of the slot, where the last time point is the first time point fed back using the BPSK method The time of correct response.

1 3. A method of transmitting a response message, characterized by including:

The receiving device decodes the data frame received from the sending device within the third time period, and uses the binary phase shift keying BPSK mode or the on-off keying 00K mode to feed back a response message to the sending device according to the decoding result, so The third time period is at least one time slot starting from the switching time point, and the switching time point is the time point when the response message feedback mode is switched;

The receiving device does not feed back a response message to the sending device within a fourth time period. The fourth time period is a period from starting to receive the data frame to before the switching time point.

14. The method according to claim 13, characterized in that, the method further includes: the receiving device obtains the switching time point;

The receiving device obtains the predefined switching time point from itself;

Alternatively, the receiving device decodes the data frame received from the sending device within the fourth time period, and after obtaining the decoding result, determines the period from starting to receive the data frame to obtaining the decoding result. The decoding success rate of the time period is determined as the switching time point when the decoding success rate reaches the preset value for the first time.

15. The method according to claim 14, wherein the receiving device decodes the data frame received from the sending device within the fourth time period, specifically including:

The receiving device decodes the data frame received from the sending device at each preset time point within the fourth time period; Wherein, each preset time point in the fourth time period includes: a time point every at least one time slot interval in the fourth time period; or, in the fourth time period, from the preset time point The number of timeslots starts at a point in time every at least one timeslot apart.

16. The method according to any one of claims 13 to 15, characterized in that the receiving device decodes the data frame received from the sending device within the third time period, specifically including:

The receiving device decodes the data frame received from the sending device at each preset time point within the third time period;

Wherein, each preset time point in the third time period includes: a time point every at least one time slot interval in the third time period; or, at least one time interval every time starting from the switching time point. The time point of the slot, where the last time point is the time when the first correct response is fed back using the BPSK mode or the 0OK mode.