CN117580086A - Method, device, equipment and storage medium for detecting PUSCH service - Google Patents

Method, device, equipment and storage medium for detecting PUSCH service Download PDF

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Publication number
CN117580086A
CN117580086A CN202311551501.4A CN202311551501A CN117580086A CN 117580086 A CN117580086 A CN 117580086A CN 202311551501 A CN202311551501 A CN 202311551501A CN 117580086 A CN117580086 A CN 117580086A
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sequence
pusch
descrambling
transmission state
output sequence
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张方超
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Shanghai Silang Technology Co ltd
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Shanghai Silang Technology Co ltd
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Priority to CN202311551501.4A priority Critical patent/CN117580086A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a method, a device, equipment and a storage medium for detecting the service of a PUSCH. The method comprises the following steps: acquiring a soft information sequence and a first scrambling bit sequence obtained by PUSCH demodulation; determining a first descrambling output sequence of the soft information sequence in the assumed discontinuous transmission state and a second descrambling output sequence in the assumed continuous transmission state according to the first scrambling bit sequence; carrying out discontinuous transmission detection of the PUSCH according to the second descrambling output sequence to obtain a transmission state detection result of the PUSCH; if the transmission state detection result is a continuous transmission state, setting the soft information on the PUSCH resource corresponding to the position of the response information in the first descrambling output sequence or the second descrambling output sequence to be zero, and obtaining a third descrambling output sequence; and carrying out service detection on the third descrambling output sequence. In the detection process of the service data, the interference generated by the response information is restrained, the occurrence probability of PUSCH decoding errors is reduced, and the performance of the uplink service of the system is improved.

Description

Method, device, equipment and storage medium for detecting PUSCH service
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, a device, and a storage medium for detecting PUSCH services.
Background
In a 5G communication system, a base station schedules a terminal device to receive and transmit data traffic through downlink control information, and the terminal device may transmit response information to the base station through a physical uplink control channel (Physical Uplink Control Channel, PUCCH) or may transmit response information on a physical uplink shared channel (Physical Uplink Shared Channel, PUSCH).
When the terminal equipment successfully receives the downlink control information, the terminal equipment sends acknowledgement information (ACK/NACK) of whether the downlink data service sent by the base station is successfully received or not to the base station, namely, the terminal equipment is in a continuous sending state; otherwise no acknowledgement information (ACK/NACK) is sent, i.e. in discontinuous transmission state (Discontinuous Transmission, DTX).
If the terminal device feeds back the response information on the PUSCH, the following problems may exist: if the service data received on the PUSCH includes the response information, all the received data will still be used in the process of detecting the service data, so that the response information and the service data are combined in a rate-splitting matching manner, which is likely to cause decoding errors of the PUSCH, thereby causing degradation of the detection performance of the service data.
Disclosure of Invention
The invention provides a method, a device, equipment and a storage medium for detecting the service of a PUSCH, which are used for solving the problem that the PUSCH decoding error is caused in the detection process of service data under the condition that the PUSCH receives response information fed back by terminal equipment, and inhibiting interference generated by the response information in the detection process of the service data by setting the soft information on the corresponding PUSCH resource at zero corresponding to the position of the response information, so that the occurrence probability of the PUSCH decoding error is reduced, and the uplink service performance of a system is improved.
According to an aspect of the present invention, there is provided a service detection method for PUSCH, including:
acquiring a soft information sequence and a first scrambling bit sequence obtained by PUSCH demodulation;
determining a first descrambling output sequence of the soft information sequence in a hypothetical discontinuous transmission state and a second descrambling output sequence in a hypothetical continuous transmission state according to the first scrambling bit sequence;
performing discontinuous transmission detection of the PUSCH according to the second descrambling output sequence to obtain a transmission state detection result of the PUSCH;
if the transmission state detection result is a continuous transmission state, setting the soft information on the PUSCH resource corresponding to the position of the response information in the first descrambling output sequence or the second descrambling output sequence to be zero, and obtaining a third descrambling output sequence;
and carrying out service detection on the third descrambling output sequence. According to another aspect of the present invention, there is provided a PUSCH traffic detection apparatus including:
the acquisition module is used for acquiring a soft information sequence and a first scrambling bit sequence obtained by PUSCH demodulation;
a first determining module, configured to determine, according to the first scrambling bit sequence, a first descrambling output sequence of the soft information sequence in a hypothetical discontinuous transmission state and a second descrambling output sequence of the soft information sequence in a hypothetical continuous transmission state;
The information detection module is used for carrying out discontinuous transmission detection of the PUSCH according to the second descrambling output sequence to obtain a transmission state detection result of the PUSCH;
the second determining module is configured to set, if the transmission state detection result is a continuous transmission state, soft information on PUSCH resources corresponding to a position of response information in the first descrambling output sequence or the second descrambling output sequence to zero, so as to obtain a third descrambling output sequence;
and the first service detection module is used for carrying out service detection on the third descrambling output sequence.
According to another aspect of the present invention, there is provided an electronic apparatus including:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,
the memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor, so that the at least one processor can execute the PUSCH traffic detection method according to any embodiment of the present invention.
According to another aspect of the present invention, there is provided a computer readable storage medium storing computer instructions for causing a processor to implement the PUSCH traffic detection method according to any embodiment of the present invention when executed.
According to the technical scheme, a soft information sequence and a first scrambling bit sequence obtained by PUSCH demodulation are obtained; determining a first descrambling output sequence of the soft information sequence in the assumed discontinuous transmission state and a second descrambling output sequence in the assumed continuous transmission state according to the first scrambling bit sequence; carrying out discontinuous transmission detection of the PUSCH according to the second descrambling output sequence to obtain a transmission state detection result of the PUSCH; if the transmission state detection result is a continuous transmission state, setting the soft information on the PUSCH resource corresponding to the position of the response information in the first descrambling output sequence or the second descrambling output sequence to be zero, and obtaining a third descrambling output sequence; and carrying out service detection on the third descrambling output sequence. By setting the soft information on the corresponding PUSCH resource at the position of the corresponding response information to be zero in the continuous transmission state, the interference generated by the response information in the detection process of the service data is restrained, the problem that the PUSCH is wrong in decoding in the detection process of the service data under the condition that the PUSCH receives the response information fed back by the terminal equipment is solved, the probability of the occurrence of the PUSCH decoding error is reduced, and the performance of the uplink service of the system is improved.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a PUSCH traffic detection method according to an embodiment of the present invention;
fig. 2 is a flowchart of another PUSCH traffic detection method according to the first embodiment of the present invention;
fig. 3 is a schematic structural diagram of a PUSCH traffic detection device according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of an electronic device implementing a PUSCH traffic detection method according to an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Before the receiving end receives the service data and demodulates the service data to output the soft information sequence, the sending end needs to process the response information on the PUSCH, and the processing process comprises the following steps: (1) encoding configuration. And performing coding configuration on the response information in the PUSCH by adopting a preset coding mode. (2) rate matching: according to the number of modulation symbols Modulation order Q m PUSCH layer number N L Determining a response information rate matching length G ACK Then use the obtained rate matching length G ACK Rate matching the coded response information bit sequence, wherein the rate matching length G ACK The calculation formula of (2) is as follows:
(3) And multiplexing the channels. And mapping the response information bit sequence after rate matching on corresponding resources allocated to response information by the PUSCH. And punching the service data, and directly replacing original service data bits by the response information bit sequence after rate matching on the punched resource position.
(4) Scrambling: the channel multiplexed bit sequence is scrambled using a scrambling bit sequence.
The embodiment of the invention mainly aims at the business detection process after the receiving end receives business data and demodulates and outputs the soft information sequence to the business data. In the service detection process, if the PUSCH is in a continuous transmission state, the service data received on the PUSCH includes response information, and all the received data is still used in the service data detection process, so that the response information and the service data are subjected to rate-de-matching and combined, and decoding errors of the PUSCH are likely to be caused, thereby reducing the service data detection performance. Aiming at the problems, the embodiment of the invention provides a service detection method of a PUSCH, which suppresses interference generated by response information in the detection process of service data and reduces the occurrence probability of PUSCH decoding errors by setting soft information on a PUSCH resource corresponding to the position of the response information to zero in a continuous transmission state. The technical scheme is described in detail below in connection with specific embodiments.
Example 1
Fig. 1 is a flowchart of a PUSCH traffic detection method according to an embodiment of the present invention, where the present embodiment is applicable to a case of performing traffic data detection on a soft information sequence obtained by PUSCH demodulation, and the method may be performed by a PUSCH traffic detection device, where the PUSCH traffic detection device may be implemented in hardware and/or software, and the PUSCH traffic detection device may be configured in a base station device. As shown in fig. 1, the method includes:
s110, acquiring a soft information sequence and a first scrambling bit sequence obtained by PUSCH demodulation.
The soft information sequence may be understood as a sequence formed by performing soft demodulation on an uplink data signal received by the PUSCH to obtain soft information. In the digital communication process, the source sequence is generally subjected to scrambling treatment to randomize the source sequence, so that the length of continuous 0 or continuous 1 is reduced, and the scrambled frequency spectrum is more suitable for baseband transmission. The first scrambling bit sequence is then understood to be a bit sequence that scrambles the soft information sequence, which is typically a sequence of bits 1 and 0.
Specifically, after the PUSCH receives an uplink data signal sent by the terminal device, soft demodulation is performed on the uplink data signal to obtain a soft information sequence, and soft information in the soft information sequence obtained by demodulation usually has positive and negative signs. Meanwhile, a first scrambling bit sequence used in a scrambling process of an uplink data signal corresponding to the soft information sequence is acquired.
The first scrambling bit sequence may be obtained by a pseudo-random sequence from a known initial value, e.g. according to a preset protocol specification.
S120, determining a first descrambling output sequence of the soft information sequence in the assumed discontinuous transmission state and a second descrambling output sequence in the assumed continuous transmission state according to the first scrambling bit sequence.
Among them, during communication of the terminal device, the acknowledgement information transmission state of the PUSCH may be divided into a continuous transmission state and a discontinuous transmission state (Discontinuous Transmission, DTX). In general, the discontinuous transmission state is also referred to as a DTX state, and the corresponding continuous transmission state is also referred to as a non-DTX state. When the PUSCH is in a discontinuous transmission state, acknowledgement information (ACK/NACK) sent by the terminal device is not received, and at this time, the PUSCH transmits service data, and the service data occupies resources allocated to the ACK/NACK by the PUSCH. When the PUSCH is in a continuous transmission state, acknowledgement information (ACK/NACK) transmitted by the terminal device is received.
In this embodiment, it is assumed that the PUSCH is an uplink data signal received in a continuous transmission state, and then detection and verification are performed on whether the PUSCH is in a continuous transmission state (i.e., a non-DTX state). Therefore, assuming a discontinuous transmission state can be understood as assuming that the transmission state of PUSCH is a discontinuous transmission state, that is, a non-DTX state occurs; the assumption of the continuous transmission state can be understood as assuming that the transmission state of the PUSCH is the continuous transmission state, that is, the non-DTX state does not occur.
The first descrambling output sequence may be understood as a sequence obtained by descrambling the soft information sequence under the assumed discontinuous transmission state; the second descrambling output sequence may be understood as a sequence obtained by descrambling the soft information sequence under the assumption of a continuous transmission state.
Specifically, under the assumption that the PUSCH is in a discontinuous transmission state, the positive and negative of the soft information in the soft information sequence is changed or unchanged according to bits 1 and 0 in the first scrambling bit sequence, so as to realize descrambling of the soft information sequence and obtain a first descrambling output sequence. Under the assumption that the PUSCH is in the continuous transmission state, the method changes the positive and negative of the soft information in the soft information sequence or does not change according to the bits 1 and 0 in the second scrambling bit sequence, so as to realize descrambling of the soft information sequence and obtain a second descrambling output sequence.
And S130, carrying out discontinuous transmission detection on the PUSCH according to the second descrambling output sequence, and obtaining a transmission state detection result of the PUSCH.
The transmission state detection result is used to represent a transmission state of the PUSCH, and the transmission state detection result may include: discontinuous transmission state (i.e., DTX state) or continuous transmission state (i.e., non-DTX state).
Specifically, the PUSCH demultiplexes the second descrambling output sequence, and obtains soft information of the position where the response information is located from the second descrambling output sequence, so that the soft information can be judged according to a preset condition to realize discontinuous transmission detection, and a transmission state detection result of the PUSCH is obtained.
It should be noted that the preset condition may be set according to the characteristics of the placeholder scrambling process set by the encoding mode of the response information by the sender, and the encoding mode of the response information and the preset condition of the response information detection in the embodiment of the present invention are not limited.
And S140, if the transmission state detection result is a continuous transmission state, setting the soft information on the PUSCH resource corresponding to the position of the response information in the first descrambling output sequence or the second descrambling output sequence to be zero, and obtaining a third descrambling output sequence.
Specifically, if the transmission state detection result is a continuous transmission state, it indicates that the second descrambling output sequence includes response information. If the second descrambling output sequence is still used in the process of detecting the service data, the response information and the service data are subjected to rate-de-matching combination, which is likely to cause PUSCH decoding errors. Therefore, the invention sets the soft information on the PUSCH resource corresponding to the position of the response information in the second descrambling output sequence or the first descrambling output sequence to zero, so as to obtain a third descrambling output sequence capable of being used for service detection, eliminate the interference of the response information on the service data in the PUSCH resource, and reduce the occurrence probability of the PUSCH decoding error.
S150, performing service detection on the third descrambling output sequence.
Specifically, in the continuous transmission state (i.e., the non-DTX state), the service detection is performed on the third descrambled output sequence after interference is removed, and specific operations of the service detection may include: and (5) rate matching and decoding.
The rate de-matching method and the decoding method are similar to the general processing procedure of PUSCH, and the embodiments of the present invention will not be described in detail.
According to the technical scheme, a soft information sequence and a first scrambling bit sequence obtained by PUSCH demodulation are obtained; determining a first descrambling output sequence of the soft information sequence in the assumed discontinuous transmission state and a second descrambling output sequence in the assumed continuous transmission state according to the first scrambling bit sequence; carrying out discontinuous transmission detection of the PUSCH according to the second descrambling output sequence to obtain a transmission state detection result of the PUSCH; if the transmission state detection result is a continuous transmission state, setting the soft information on the PUSCH resource corresponding to the position of the response information in the first descrambling output sequence or the second descrambling output sequence to be zero, and obtaining a third descrambling output sequence; performing service detection on the third descrambling output sequence; the soft information on the corresponding PUSCH resource is set to zero at the position of the corresponding response information, so that interference generated by the response information in the detection process of the service data is restrained, the occurrence probability of PUSCH decoding errors is reduced, and the uplink service performance of the system is improved.
Example two
Fig. 2 is a flowchart of a PUSCH traffic detection method according to a second embodiment of the present invention, where the embodiment is further defined on the basis of the first embodiment, and determining, according to the first scrambling bit sequence, a first descrambling output sequence of the soft information sequence in an assumed discontinuous transmission state and a second descrambling output sequence of the soft information sequence in an assumed continuous transmission state includes: determining a first descrambling sequence according to the first scrambling bit sequence in the assumed discontinuous transmission state; descrambling the soft information sequence according to the first descrambling sequence to obtain a first descrambling output sequence; determining a second scrambling bit sequence according to the first scrambling bit sequence and a preset coding mode of the response information in the assumed continuous transmission state; and descrambling the soft information sequence according to the second scrambling bit sequence to obtain a second descrambling output sequence.
As shown in fig. 2, the method includes:
s210, acquiring a soft information sequence and a first scrambling bit sequence obtained by PUSCH demodulation.
S220, determining a first descrambling sequence according to the first scrambling bit sequence under the assumption of a discontinuous transmission state; and descrambling the soft information sequence according to the first descrambling sequence to obtain a first descrambling output sequence.
The first descrambling sequence may be understood as a sequence for descrambling a soft information sequence generated under the assumption of a discontinuous transmission state.
Specifically, when the PUSCH is in the assumed discontinuous transmission state, the terminal device will not send the response information, the PUSCH transmits service data, and the service data occupies the resources allocated to the response information by the PUSCH, so that the first descrambling sequence may be calculated by the first scrambling bit sequence according to the PUSCH normal resource mapping mode. Thus, the soft information sequence may be descrambled according to the first descrambling sequence to obtain a first descrambling output sequence.
Illustratively, let the first scrambling bit sequence be s i The soft information sequence is P i ，i＝1,…,G PUSCH Wherein G is PUSCH And is the rate matching length of the service data. According to the first scrambling bit sequence s i Determining a first descrambling sequenceThe specific calculation formula is as follows:
using a first descrambling sequenceFor soft information sequence P i Descrambling is performed to obtain a first descrambled output sequence +.>The specific calculation formula is as follows:
s230, under the assumption of a continuous transmission state, determining a second scrambling bit sequence according to the first scrambling bit sequence and a preset coding mode of response information; and descrambling the soft information sequence according to the second scrambling bit sequence to obtain a second descrambling output sequence.
The second descrambling sequence may be understood as a sequence for descrambling the soft information sequence generated under the assumption of a continuous transmission state.
Specifically, in the assumed continuous transmission state, the response information is transmitted on the PUSCH after the service data is punctured, and the response information is encoded at the transmitting end according to a preset encoding mode. Therefore, the second scrambling bit sequence can be determined according to the first scrambling bit sequence and the preset coding mode of the response information. Then, the soft information sequence is descrambled by adopting a second scrambling bit sequence, and a second descrambling output sequence is obtained.
In an alternative embodiment, descrambling the soft information sequence according to the second scrambling bit sequence to obtain a second descrambled output sequence comprises:
determining a second descrambling sequence according to the second scrambling bit sequence;
and descrambling the soft information sequence according to the second descrambling sequence to obtain a second descrambling output sequence.
Exemplary, in the assumed continuous transmission state, the second scrambling bit sequence is assumed to be m i Using the second scrambling bit sequence m i Calculating a second descrambling sequenceThe specific calculation formula is as follows:
Using a second descrambling sequenceAnd pair soft information sequence P i Descrambling is performed to obtain a second descrambled output sequence +.>The specific calculation formula is as follows:
s240, discontinuous transmission detection of the PUSCH is carried out according to the second descrambling output sequence, and a transmission state detection result of the PUSCH is obtained.
S250, if the transmission state detection result is a continuous transmission state, setting the soft information on the PUSCH resource corresponding to the position of the response information in the first descrambling output sequence or the second descrambling output sequence to be zero, and obtaining a third descrambling output sequence; and carrying out service detection on the third descrambling output sequence.
And S260, if the transmission state detection result is a discontinuous transmission state, performing service detection on the first descrambling output sequence.
Specifically, if the transmission state detection result is a discontinuous transmission state, the assumption condition is not satisfied, that is, there is no multiplexing of acknowledgement information on PUSCH. The second descrambling output sequence is obtained according to the second scrambling bit sequence, and because the second scrambling bit sequence changes the original scrambling bit value, soft information on the PUSCH resource corresponding to the placeholder position needs to be processed, so that the second descrambling output sequence cannot be used for subsequent service detection decoding. The first descrambling output sequence is obtained according to the first scrambling bit sequence, and the bit value of the placeholder position of the first scrambling bit sequence is not changed, so that the first descrambling output sequence can be directly subjected to service detection, and interference is not brought to the de-rate matching in the process of service detection and decoding.
According to the technical scheme, a soft information sequence and a first scrambling bit sequence obtained by PUSCH demodulation are obtained; determining a first descrambling sequence according to the first scrambling bit sequence under the assumption of discontinuous transmission state; descrambling the soft information sequence according to the first descrambling sequence to obtain a first descrambling output sequence; under the assumption of a continuous transmission state, determining a second scrambling bit sequence according to the first scrambling bit sequence and a preset coding mode of response information; descrambling the soft information sequence according to the second scrambling bit sequence to obtain a second descrambling output sequence; carrying out discontinuous transmission detection of the PUSCH according to the second descrambling output sequence to obtain a transmission state detection result of the PUSCH; if the transmission state detection result is a continuous transmission state, setting the soft information on the PUSCH resource corresponding to the position of the response information in the first descrambling output sequence or the second descrambling output sequence to be zero, and obtaining a third descrambling output sequence; performing service detection on the third descrambling output sequence; and if the transmission state detection result is a discontinuous transmission state, carrying out service detection on the first descrambling output sequence. The method and the device have the advantages that whether the interference caused by the response information is restrained or not is detected and selected through the sending state, the flexibility of interference processing is improved, when the sending state detection result is the continuous sending state, the influence of the response signal on service data is eliminated, the PUSCH decoding error caused by the non-DTX condition is avoided, and therefore the uplink service performance of the system is improved.
In an optional embodiment, the determining the second scrambling bit sequence according to the first scrambling bit sequence and the preset coding manner of the response information includes:
obtaining a scrambling bit value of a first target position in a first scrambling bit sequence; the first target position is the position of the placeholder in the response information;
if the placeholder is a first preset placeholder, updating a scrambling bit value corresponding to the placeholder to be a scrambling bit value of a previous position of the placeholder;
if the placeholder is a second preset placeholder, updating a scrambling bit value corresponding to the placeholder to be zero;
and determining the updated first scrambling bit sequence as a second scrambling bit sequence.
Before the receiving end receives the service data and demodulates the service data to output the soft information sequence, the sending end needs to process the response information on the PUSCH, and the processing process comprises the following steps: (1) The coding configuration may adopt a preset coding scheme of the response information in the PUSCH as shown in table 1 or table 2. Table 1 is a coding scheme of a 1-bit response signal, and table 2 is a coding scheme of a 2-bit response signal.
TABLE 1
Q m Coded bit sequence
1 [c 0 ]
2 [c 0 y]
4 [c 0 y x x]
6 [c 0 y x x x x]
8 [c 0 y x x x x x x]
TABLE 2
Q m Coded bit sequence
1 [c 0 c 1 c 2 ]
2 [c 0 c 1 c 2 c 0 c 1 c 2 ]
4 [c 0 c 1 x x c 2 c 0 x x c 1 c 2 x x]
6 [c 0 c 1 x x x x c 2 c 0 x x x x c 1 c 2 x x x x]
8 [c 0 c 1 x x x x x x c 2 c 0 x x x x x x c 1 c 2 x x x x x x]
Wherein Q is m Representing the modulation order; c 0 And c 1 Representing response information bits, c 2 Represents check bits and satisfies c 2 ＝(c 0 +c 1 ) mod 2; "y" and "x" denote placeholders, which function to maximize the euclidean distance between modulation symbols carrying information bits by performing special processing on the placeholders during scrambling.
In the assumed continuous transmission state, that is, when DTX does not occur, the acknowledgement signal is transmitted on the PUSCH after puncturing the traffic data. In order to improve the DTX detection precision, the second descrambling bit sequence is calculated by using the first scrambling bit sequence and the position of the placeholder in the response information. Specifically, as shown in table 1 and table 2, when the modulation order is greater than 1, a placeholder is added to the response information code output, and according to the first scrambling bit sequence, scrambling bit values at positions corresponding to the first preset placeholder "y" and the second preset placeholder "x" are processed to generate a second scrambling bit sequence.
Let the first scrambling bit sequence be s i ，i＝1,…,G PUSCH The method comprises the steps of carrying out a first treatment on the surface of the The second scrambling bit sequence is m i ，i＝1,…,G PUSCH . Scrambling bit value s when i is the corresponding position of the first preset placeholder "y i Updating the scrambled bit value to the previous position of the first preset placeholder "y", i.e. let m i ＝s i ＝s i-1 The method comprises the steps of carrying out a first treatment on the surface of the When i is the corresponding position of the second preset placeholder 'x', the scrambling bit value s i Update to zero, i.e. let m i ＝s i =0. Updating the first scrambling bit sequence s according to the updating rule i Obtaining a second scrambling bit sequence of m i 。
On the basis of the foregoing embodiment, the performing discontinuous transmission detection of PUSCH according to the second descrambling output sequence to obtain a transmission status detection result of PUSCH includes:
demultiplexing the second descrambling output sequence to obtain a soft information sequence on a PUSCH resource corresponding to response information in the second descrambling output sequence;
determining the soft information sequence as a fourth descrambling output sequence;
performing discontinuous transmission detection on the fourth descrambling output sequence, and determining whether response information exists on a PUSCH;
if the response information exists on the PUSCH, determining that the transmission state detection result is a continuous transmission state;
and if no response information exists on the PUSCH, determining that the transmission state detection result is a discontinuous transmission state.
In the uplink access process of the PUSCH, under the condition that discontinuous transmission state of the PUSCH occurs, no response information (ACK/NACK) sent by the terminal equipment is received; and receiving response information sent by the terminal equipment only when the PUSCH is in a continuous sending state. Therefore, the transmission state detection result of the PUSCH can be determined by detecting whether or not there is response information on the PUSCH.
Specifically, the second descrambling output sequence is demultiplexed, a soft information sequence on the PUSCH resource corresponding to the response information in the second descrambling output sequence is obtained, and the soft information sequence is determined as a fourth descrambling output sequence. And carrying out discontinuous transmission detection on the fourth descrambling output sequence, and determining whether response information exists on the PUSCH. According to the principle that response information sent by the terminal equipment is not received under the condition that discontinuous transmission state of the PUSCH occurs, and the response information sent by the terminal equipment is received under the condition that continuous transmission state of the PUSCH occurs, if the response information exists on the PUSCH, determining that the transmission state detection result is the continuous transmission state; if no response information exists on the PUSCH, determining that the transmission state detection result is a discontinuous transmission state.
On the basis of the foregoing embodiment, the performing discontinuous transmission detection on the fourth descrambling output sequence to determine whether response information exists on a PUSCH includes:
acquiring a symbol of soft information on a PUSCH resource corresponding to a second target position in the fourth descrambling output sequence;
if the symbol of the soft information meets a preset condition, determining that response information exists on a PUSCH;
If the symbol of the soft information does not meet the preset condition, determining that no response information exists on the PUSCH;
the second target position is the position of a first preset placeholder in the response information and the previous position, and the corresponding preset condition is that the sign of soft information on the PUSCH resource corresponding to the position of the first preset placeholder is the same as the sign of soft information on the PUSCH resource corresponding to the previous position;
or, the second target position is that soft information on PUSCH resources corresponding to the position of the second preset placeholder in the response information is negative.
In this embodiment, the preset condition is set according to the scrambling processing mode of the sender to the placeholder of the response information, and by adding the processing to the placeholder of the response information at the receiving end, the reliability of discontinuous transmission detection (namely DTX detection) is improved, and the possibility of missed detection and false detection is reduced.
According to the scrambling process of the originating terminal, when i is the first preset placeholderWhen the y corresponds to the position, the scrambling bit value m of the second descrambling sequence i Updating the scrambled bit value of the previous position of the first preset placeholder "y" of the second descrambling sequence, i.e. let m i ＝s i ＝s i-1 The method comprises the steps of carrying out a first treatment on the surface of the Therefore, when the second target position is the position of the first preset placeholder in the response information and the previous position, the positive and negative signs of the soft information on the PUSCH resources corresponding to the two positions should be the same. Accordingly, the preset condition in this case is set such that the position of the first preset placeholder corresponds to the soft information on the PUSCH resource and the previous position corresponds to the same sign of the soft information on the PUSCH resource. When i is the corresponding position of the second preset placeholder "x", the scrambling bit value m of the second descrambling sequence i Updated to zero. Accordingly, the preset condition can be set as that the soft information on the PUSCH resources corresponding to the position of the second preset placeholder in the response information is negative.
If the symbol of the soft information on the PUSCH resource corresponding to the positions of the first preset placeholder and the second preset placeholder in the fourth descrambling output sequence meets the preset condition, determining that response information exists on the PUSCH; and if the symbol of the soft information on the PUSCH resource corresponding to the position of the first preset placeholder or the second preset placeholder in the fourth descrambling output sequence does not meet the preset condition, determining that no response information exists on the PUSCH.
When acknowledgement information (ACK/NACK) exists on the PUSCH, the mapping position of each ACK/NACK modulation symbol in the constellation is limited according to the coding schemes in tables 1 and 2 and the description of the scrambling process of the placeholder "y" and the placeholder "x" by the origination. For example, if the modulation order Q m When the ACK/NACK information bit is 1 bit, each ACK/NACK modulation symbol can only be mapped to the outermost constellation point of the first quadrant or the third quadrant in the constellation diagram; when the ACK/NACK information bits are 2 bits, every three consecutive ACK/NACK modulation symbols can only be mapped to the outermost constellation point in the constellation, and the first ACK/NACK modulation symbol determines the mapped quadrant of the last two ACK/NACK modulation symbols. The service data presents stronger randomness, each modulation symbol can be mapped to any constellation point in all quadrants in the constellation diagram, and the demodulation result is provided with Soft information with positive and negative randomness.
If the response information (ACK/NACK) is detected to exist, the soft information sequence output after demodulation contains the response information (ACK/NACK), and the response information (ACK/NACK) has strong characteristics, so that interference may be caused to soft bit information of other resource service data during de-rate matching and combining, thereby causing PUSCH decoding errors, and therefore, the interference of the response information (ACK/NACK) on the service data can be effectively reduced by setting the soft information on the corresponding resource of the response information (ACK/NACK) in the first descrambling output sequence or the second descrambling output sequence to 0. If no response information (ACK/NACK) exists, a first descrambling output sequence obtained by descrambling the soft information sequence output by demodulation can be adopted for service detection and decoding.
Example III
Fig. 3 is a schematic structural diagram of a PUSCH traffic detection device according to a third embodiment of the present invention. As shown in fig. 3, the apparatus includes: an acquisition module 310, a first determination module 320, an information detection module 330, a second determination module 340, and a first traffic detection module 350; wherein,
an obtaining module 310, configured to obtain a soft information sequence and a first scrambling bit sequence obtained by PUSCH demodulation;
A first determining module 320, configured to determine, according to the first scrambling bit sequence, a first descrambling output sequence of the soft information sequence in a assumed discontinuous transmission state and a second descrambling output sequence of the soft information sequence in a assumed continuous transmission state;
an information detection module 330, configured to determine a response information detection result according to the second descrambling output sequence;
a second determining module 340, configured to, if the transmission state detection result is a continuous transmission state, set soft information on PUSCH resources corresponding to a position of response information in the first descrambling output sequence or the second descrambling output sequence to zero, and obtain a third descrambling output sequence;
a first service detection module 350, configured to perform service detection on the third descrambled output sequence.
Optionally, the first determining module 320 includes:
a first determining unit, configured to determine a first descrambling sequence according to the first scrambling bit sequence in the assumed discontinuous transmission state; descrambling the soft information sequence according to the first descrambling sequence to obtain a first descrambling output sequence;
a second determining unit, configured to determine, in the assumed continuous transmission state, a second scrambling bit sequence according to the first scrambling bit sequence and a preset coding manner of the response information; and descrambling the soft information sequence according to the second scrambling bit sequence to obtain a second descrambling output sequence.
Optionally, the second determining unit includes:
a sequence determination subunit, configured to determine a second descrambling sequence according to the second scrambling bit sequence;
and the descrambling subunit is used for descrambling the soft information sequence according to the second descrambling sequence to obtain a second descrambling output sequence.
Optionally, the second determining unit is specifically configured to:
obtaining a scrambling bit value of a first target position in a first scrambling bit sequence; the first target position is the position of the placeholder in the response information;
if the placeholder is a first preset placeholder, updating a scrambling bit value corresponding to the placeholder to be a scrambling bit value of a previous position of the placeholder;
if the placeholder is a second preset placeholder, updating a scrambling bit value corresponding to the placeholder to be zero;
and determining the updated first scrambling bit sequence as a second scrambling bit sequence.
Optionally, the information detection module 330 includes:
a demultiplexing unit, configured to demultiplex the second descrambling output sequence to obtain a soft information sequence on PUSCH resources corresponding to response information in the second descrambling output sequence;
A sequence determining unit, configured to determine the soft information sequence as a fourth descrambling output sequence;
a transmission detection unit, configured to perform discontinuous transmission detection on the fourth descrambling output sequence, and determine whether response information exists on a PUSCH;
a first result determining unit, configured to determine that the transmission state detection result is a continuous transmission state if there is response information on a PUSCH;
and the second result determining unit is used for determining that the sending state detection result is a discontinuous sending state if no response information exists on the PUSCH.
Optionally, the sending detection unit is specifically configured to:
acquiring a symbol of soft information on a PUSCH resource corresponding to a second target position in the fourth descrambling output sequence;
if the symbol of the soft information meets a preset condition, determining that response information exists on a PUSCH;
if the symbol of the soft information does not meet the preset condition, determining that no response information exists on the PUSCH;
the second target position is the position of a first preset placeholder in the response information and the previous position, and the corresponding preset condition is that the sign of soft information on the PUSCH resource corresponding to the position of the first preset placeholder is the same as the sign of soft information on the PUSCH resource corresponding to the previous position;
Or, the second target position is that soft information on PUSCH resources corresponding to the position of the second preset placeholder in the response information is negative.
Optionally, the method further comprises:
and the second service detection module is used for carrying out discontinuous transmission detection on the PUSCH according to the second descrambling output sequence, and carrying out service detection on the first descrambling output sequence if the transmission state detection result is a discontinuous transmission state after the transmission state detection result of the PUSCH is obtained.
The PUSCH service detection device provided by the embodiment of the invention can execute the PUSCH service detection method provided by any embodiment of the invention, and has the corresponding functional module and beneficial effects of the execution method.
Example 4
Fig. 4 shows a schematic diagram of the structure of an electronic device 10 that may be used to implement an embodiment of the invention. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. Electronic equipment may also represent various forms of mobile devices, such as personal digital processing, cellular telephones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.
As shown in fig. 4, the electronic device 10 includes at least one processor 11, and a memory, such as a Read Only Memory (ROM) 12, a Random Access Memory (RAM) 13, etc., communicatively connected to the at least one processor 11, in which the memory stores a computer program executable by the at least one processor, and the processor 11 may perform various appropriate actions and processes according to the computer program stored in the Read Only Memory (ROM) 12 or the computer program loaded from the storage unit 18 into the Random Access Memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 may also be stored. The processor 11, the ROM 12 and the RAM 13 are connected to each other via a bus 14. An input/output (I/O) interface 15 is also connected to bus 14.
Various components in the electronic device 10 are connected to the I/O interface 15, including: an input unit 16 such as a keyboard, a mouse, etc.; an output unit 17 such as various types of displays, speakers, and the like; a storage unit 18 such as a magnetic disk, an optical disk, or the like; and a communication unit 19 such as a network card, modem, wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.
The processor 11 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 11 performs the respective methods and processes described above, such as the traffic detection method of PUSCH.
In some embodiments, the traffic detection method of PUSCH may be implemented as a computer program, tangibly embodied on a computer-readable storage medium, such as the storage unit 18. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 10 via the ROM 12 and/or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the PUSCH traffic detection method described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to perform the traffic detection method of PUSCH in any other suitable way (e.g. by means of firmware).
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.
A computer program for carrying out methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be implemented. The computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.
The computing system may include clients and servers. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service are overcome.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims (10)

1. The service detection method for the PUSCH is characterized by comprising the following steps:
acquiring a soft information sequence and a first scrambling bit sequence obtained by PUSCH demodulation;
determining a first descrambling output sequence of the soft information sequence in a hypothetical discontinuous transmission state and a second descrambling output sequence in a hypothetical continuous transmission state according to the first scrambling bit sequence;
performing discontinuous transmission detection of the PUSCH according to the second descrambling output sequence to obtain a transmission state detection result of the PUSCH;
If the transmission state detection result is a continuous transmission state, setting the soft information on the PUSCH resource corresponding to the position of the response information in the first descrambling output sequence or the second descrambling output sequence to be zero, and obtaining a third descrambling output sequence;
and carrying out service detection on the third descrambling output sequence.
2. The method of claim 1, wherein said determining a first descrambled output sequence for the soft information sequence in a hypothesized discontinuous transmission state and a second descrambled output sequence for the hypothesized continuous transmission state based on the first scrambling bit sequence comprises:
determining a first descrambling sequence according to the first scrambling bit sequence in the assumed discontinuous transmission state; descrambling the soft information sequence according to the first descrambling sequence to obtain a first descrambling output sequence;
determining a second scrambling bit sequence according to the first scrambling bit sequence and a preset coding mode of the response information in the assumed continuous transmission state; and descrambling the soft information sequence according to the second scrambling bit sequence to obtain a second descrambling output sequence.
3. The method of claim 2, wherein the descrambling the soft information sequence according to the second scrambling bit sequence to obtain a second descrambled output sequence comprises:
Determining a second descrambling sequence according to the second scrambling bit sequence;
and descrambling the soft information sequence according to the second descrambling sequence to obtain a second descrambling output sequence.
4. The method according to claim 2, wherein the determining the second scrambling bit sequence according to the first scrambling bit sequence and the preset coding manner of the response information includes:
obtaining a scrambling bit value of a first target position in a first scrambling bit sequence; the first target position is the position of the placeholder in the response information;
if the placeholder is a first preset placeholder, updating a scrambling bit value corresponding to the placeholder to be a scrambling bit value of a previous position of the placeholder;
if the placeholder is a second preset placeholder, updating a scrambling bit value corresponding to the placeholder to be zero;
and determining the updated first scrambling bit sequence as a second scrambling bit sequence.
5. The method of claim 4, wherein the performing discontinuous transmission detection of PUSCH according to the second descrambling output sequence to obtain a transmission status detection result of PUSCH comprises:
Demultiplexing the second descrambling output sequence to obtain a soft information sequence on a PUSCH resource corresponding to response information in the second descrambling output sequence;
determining the soft information sequence as a fourth descrambling output sequence;
performing discontinuous transmission detection on the fourth descrambling output sequence, and determining whether response information exists on a PUSCH;
if the response information exists on the PUSCH, determining that the transmission state detection result is a continuous transmission state;
and if no response information exists on the PUSCH, determining that the transmission state detection result is a discontinuous transmission state.
6. The method of claim 5, wherein the performing discontinuous transmission detection on the fourth descrambled output sequence to determine whether there is response information on PUSCH comprises:
acquiring a symbol of soft information on a PUSCH resource corresponding to a second target position in the fourth descrambling output sequence;
if the symbol of the soft information meets a preset condition, determining that response information exists on a PUSCH;
if the symbol of the soft information does not meet the preset condition, determining that no response information exists on the PUSCH;
the second target position is the position of a first preset placeholder in the response information and the previous position, and the corresponding preset condition is that the sign of soft information on the PUSCH resource corresponding to the position of the first preset placeholder is the same as the sign of soft information on the PUSCH resource corresponding to the previous position;
Or, the second target position is that soft information on PUSCH resources corresponding to the position of the second preset placeholder in the response information is negative.
7. The method according to claim 1, wherein after performing discontinuous transmission detection of PUSCH according to the second descrambling output sequence, obtaining a transmission status detection result of PUSCH, further comprising:
and if the transmission state detection result is a discontinuous transmission state, carrying out service detection on the first descrambling output sequence.
8. A PUSCH traffic detection apparatus, comprising:
the acquisition module is used for acquiring a soft information sequence and a first scrambling bit sequence obtained by PUSCH demodulation;
a first determining module, configured to determine, according to the first scrambling bit sequence, a first descrambling output sequence of the soft information sequence in a hypothetical discontinuous transmission state and a second descrambling output sequence of the soft information sequence in a hypothetical continuous transmission state;
the information detection module is used for carrying out discontinuous transmission detection of the PUSCH according to the second descrambling output sequence to obtain a transmission state detection result of the PUSCH;
the second determining module is configured to set, if the transmission state detection result is a continuous transmission state, soft information on PUSCH resources corresponding to a position of response information in the first descrambling output sequence or the second descrambling output sequence to zero, so as to obtain a third descrambling output sequence;
And the first service detection module is used for carrying out service detection on the third descrambling output sequence.
9. An electronic device, the electronic device comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the PUSCH traffic detection method of any one of claims 1-7.
10. A computer readable storage medium storing computer instructions for causing a processor to implement the method for traffic detection of PUSCH according to any one of claims 1-7 when executed.
CN202311551501.4A 2023-11-20 2023-11-20 Method, device, equipment and storage medium for detecting PUSCH service Pending CN117580086A (en)

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