CN113541875B - Method, system, device, electronic equipment and medium for wireless data transmission - Google Patents
Method, system, device, electronic equipment and medium for wireless data transmission Download PDFInfo
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- CN113541875B CN113541875B CN202110662162.1A CN202110662162A CN113541875B CN 113541875 B CN113541875 B CN 113541875B CN 202110662162 A CN202110662162 A CN 202110662162A CN 113541875 B CN113541875 B CN 113541875B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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Abstract
The application discloses a method, a system, a device, electronic equipment and a medium for wireless data transmission. By applying the technical scheme of the application, in the 60GHz frequency spectrum, when the user terminal and the opposite terminal base station schedule the physical resources, the terminal can feed back an indicator identifier for informing the opposite terminal base station whether to receive all the physical resources at the first time when receiving the physical resources, and then send HARQ feedback data in the subsequent process. And further, the base station does not need to resend the physical resources even if the feedback data is not received in the monitoring time after knowing that the terminal has received the indication identifiers of all the physical resources. Thereby avoiding the problem of unnecessary transmission power waste in the related art.
Description
Technical Field
The present application relates to data processing technologies, and in particular, to a method, a system, an apparatus, an electronic device, and a medium for wireless data transmission.
Background
In 60GHz, before data transmission between terminal equipment UE and base station equipment gNB, the gNB needs to firstly send a PDCCH to the UE, the PDCCH blind detection is utilized to obtain user scheduling information, and then the gNB schedules a plurality of physical resource PDSCHs according to the PDCCH blind detection result. Further, HARQ feedback information of multiple transport blocks is sent to the UE, and sent by the UE to the PUCCH of the gNB.
However, in the 60GHz spectrum, due to the presence of Wi-Fi devices, there may be a situation where HARQ feedback information in PUCCH is blocked due to channel occupancy or the like. It can be appreciated that due to the blocking of HARQ feedback transmission, the gNB will assume that the feedback of all PDSCH data is not successful, so as to make contention window adjustments, and perform additional retransmissions of all PDSCHs in the gNB. This will certainly cause waste of retransmission resources and increase the delay of wireless data transmission.
Disclosure of Invention
The embodiment of the present application provides a method, a system, an apparatus, an electronic device and a medium for wireless data transmission, wherein according to an aspect of the embodiment of the present application, a method for wireless data transmission is provided, which is characterized in that, when applied to a target terminal, the method includes:
acquiring a physical resource signal sent by an opposite terminal base station, and detecting whether the physical resource signal carries all physical resources sent by the opposite terminal base station;
if the physical resource signal is detected to carry all the physical resources, generating a first indication identifier; or, if it is detected that the physical resource signal does not carry all the physical resources, generating a second indication identifier;
sending the first indication identifier or the second indication identifier to the opposite-end base station;
and generating HARQ feedback data and sending the HARQ feedback data to the opposite terminal base station.
Optionally, in another embodiment of the foregoing method based on the present application, after the sending or receiving the first indication identifier to the peer base station, the method further includes:
and generating corresponding HARQ feedback data according to all the physical resources, and sending the HARQ feedback data to the opposite terminal base station.
Optionally, in another embodiment based on the foregoing method of the present application, after the sending the second indication identifier to the peer base station, the method further includes:
receiving a retransmission physical resource signal sent by the opposite terminal base station, and acquiring retransmission physical resources carried in the retransmission physical resource signal;
and generating corresponding HARQ feedback data based on the retransmission physical resources, and sending the HARQ feedback data to the opposite-end base station.
Optionally, in another embodiment based on the method of the present application, the detecting whether the physical resource signal carries all physical resources sent by the peer base station includes:
acquiring an index number carried in the physical resource signal, wherein the index number records identifiers corresponding to all physical resources;
and detecting whether the physical resource signals carry all the physical resources or not according to the identifiers corresponding to all the physical resources recorded in the index number.
Optionally, in another embodiment based on the foregoing method of the present application, after the generating HARQ feedback data and sending the HARQ feedback data to the peer base station, the method further includes:
and if the HARQ feedback data is detected to be unsuccessfully transmitted within the preset time period, when other physical resource signals transmitted by the opposite terminal base station are acquired next time, the HARQ feedback data and other HARQ feedback data generated based on the other physical resource signals are transmitted to the opposite terminal base station.
According to an aspect of the embodiments of the present application, there is provided a method for wireless data transmission, which is applied to a target base station, and includes:
sending a physical resource signal to an opposite terminal, wherein the physical resource signal carries all physical resources and corresponding index numbers;
and determining whether to transmit a retransmission physical resource signal to the opposite terminal according to a target indication identifier transmitted by the opposite terminal, wherein the target indication identifier comprises one of a first indication identifier or a second indication identifier.
Optionally, in another embodiment based on the foregoing method of the present application, the determining whether to send a retransmission physical resource signal to the peer terminal according to a target indication identifier sent by the peer terminal includes:
if a first indication identifier sent by the opposite terminal is received, determining to increase the initial monitoring time to an extended monitoring time, wherein the first indication identifier is used for representing that the opposite terminal has received all the physical resources;
monitoring whether HARQ feedback data sent by the opposite terminal is received or not within the prolonged monitoring time;
if the HARQ feedback data is received, judging whether the HARQ feedback data is NACK data;
if so, sending a retransmission physical resource signal corresponding to the NACK data to the opposite terminal;
and if not, sending a next physical resource signal to the opposite terminal.
Optionally, in another embodiment based on the foregoing method of the present application, the determining whether to send a retransmission physical resource signal to the peer terminal according to a target indication identifier sent by the peer terminal includes:
and if the second indication identifier sent by the opposite terminal is received, immediately sending the retransmission physical resource signal to the opposite terminal.
Optionally, in another embodiment based on the foregoing method of the present application, the monitoring whether HARQ feedback data sent by the peer terminal is received in the extended listening time includes:
and if the HARQ feedback data is not received in the prolonged monitoring time, continuously monitoring whether the HARQ feedback data sent by the opposite terminal exists on other pre-allocated communication channels.
According to an aspect of the embodiments of the present application, there is provided a system for wireless data transmission, including:
under a 60GHz frequency spectrum, a target terminal receives a physical resource signal sent by a target base station and detects whether the physical resource signal carries all physical resources sent by the target base station;
the target terminal generates a corresponding target indication identifier based on whether the physical resource signal carries all the physical resources or not and sends the corresponding target indication identifier to the target base station;
if the target base station determines that the target terminal does not receive all physical resources according to the target indication identifier, transmitting a retransmission physical resource signal to the opposite terminal; and if the target base station determines that the target terminal receives all physical resources according to the target indication identifier, monitoring whether HARQ feedback data sent by the opposite terminal is received or not within the prolonged monitoring time.
According to another aspect of the embodiments of the present application, there is provided an apparatus for wireless data transmission, which is applied to a target terminal, and includes:
an obtaining module, configured to obtain a physical resource signal sent by an opposite terminal base station, and detect whether the physical resource signal carries all physical resources sent by the opposite terminal base station;
a detection module configured to generate a first indication identifier if the physical resource signal is detected to carry all the physical resources; or, if it is detected that the physical resource signal does not carry all the physical resources, generating a second indication identifier;
a sending module configured to send the first indication identifier or the second indication identifier to the peer base station;
a generating module configured to generate HARQ feedback data and send the HARQ feedback data to the opposite-end base station.
According to another aspect of the embodiments of the present application, an apparatus for wireless data transmission is provided, which is applied to a target base station, and includes:
a sending module configured to send a physical resource signal to an opposite terminal, where the physical resource signal carries all physical resources and corresponding index numbers;
a determining module configured to determine whether to send a retransmitted physical resource signal to the peer terminal according to a target indication identifier sent by the peer terminal, where the target indication identifier includes one of a first indication identifier and a second indication identifier.
According to another aspect of the embodiments of the present application, there is provided an electronic device including:
a memory for storing executable instructions; and
a display for displaying with the memory to execute the executable instructions to perform the operations of any of the above-described methods of wireless data transmission.
According to yet another aspect of the embodiments of the present application, a computer-readable storage medium is provided for storing computer-readable instructions, which when executed perform the operations of any one of the above-mentioned methods for wireless data transmission.
In the application, the target terminal receives the physical resource signal sent by the target base station under the 60GHz frequency spectrum, and detects whether the physical resource signal carries all physical resources sent by the target base station; the target terminal generates a corresponding target indication identifier based on whether the physical resource signal carries all physical resources or not and sends the target indication identifier to a target base station; if the target base station determines that the target terminal does not receive all physical resources according to the target indication identifier, a retransmission physical resource signal is sent to the opposite terminal; and if the target base station determines that the target terminal receives all physical resources according to the target indication identifier, monitoring whether HARQ feedback data sent by the opposite terminal is received or not within the prolonged monitoring time. By applying the technical scheme of the application, in the 60GHz frequency spectrum, when the user terminal and the opposite terminal base station schedule physical resources, the terminal can feed back an indicator identifier for informing whether the opposite terminal base station receives all the physical resources at the first time when receiving the physical resources, and then HARQ feedback data is sent subsequently. And further, the base station does not need to resend the physical resources once knowing that the terminal has received the indicator identifiers of all the physical resources even if the base station does not receive the feedback data within the monitoring time. Thereby avoiding the problem of unnecessary transmission power waste in the related art.
The technical solution of the present application is further described in detail by the accompanying drawings and examples.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.
The present application may be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:
fig. 1 is a schematic diagram of a method for wireless data transmission according to the present application;
fig. 2 is a schematic diagram of a method for wireless data transmission according to the present application;
fig. 3 is a schematic diagram of a system for wireless data transmission according to the present application;
fig. 4 is a schematic structural diagram of an electronic device for wireless data transmission according to the present application;
fig. 5 is a schematic structural diagram of an electronic device for wireless data transmission according to the present application.
Detailed Description
Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise.
Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In addition, technical solutions between the various embodiments of the present application may be combined with each other, but it must be based on the realization of the technical solutions by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should be considered to be absent and not within the protection scope of the present application.
It should be noted that all the directional indicators (such as upper, lower, left, right, front, and rear … …) in the present embodiment are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
A method for wireless data transmission according to an exemplary embodiment of the present application is described below in conjunction with fig. 1-3. It should be noted that the following application scenarios are merely illustrated for facilitating understanding of the spirit and principles of the present application, and the embodiments of the present application are not limited in any way in this respect. Rather, embodiments of the present application may be applied to any scenario where applicable.
The application also provides a method, a device, a target terminal and a medium for wireless data transmission.
Fig. 1 schematically shows a flow chart of a method for wireless data transmission according to an embodiment of the present application. As shown in fig. 1, the method is applied to a target terminal, and includes:
s101, acquiring a physical resource signal sent by an opposite terminal base station, and detecting whether the physical resource signal carries all physical resources sent by the opposite terminal base station.
In the related technology, on a 60GHz high frequency band, as a subcarrier interval is changed from an original 15kHz to a higher interval such as 480 kHz and 960kHz, the length of one slot is changed from an original 1ms to 0.015ms, and under the condition that a scheduling unit is still 1 slot, a certain limitation is imposed on the realization of original scheduling, and meanwhile, a higher requirement is imposed on PDCCH blind detection (namely that a PDCCH is detected by using an RNTI to obtain scheduling information of a certain user), so in order to reduce the pressure of scheduling and reduce the signaling processing burden of a high layer, a scheduling unit is considered to be extended, that is, one PDCCH can be used for scheduling a plurality of PDSCHs carrying independent TB transmission blocks, if feedback information of a plurality of PDSCH data is fed back to one PUCCH, 60GHz competes with a Wi-Fi channel, if the channel is always occupied by Wi-Fi equipment, that is LBT always fails, and when the feedback receiving monitoring time set by the base station is exceeded, the base station considers that the contention is NACK all to be received, thereby adjusting a window to adapt to a link channel, and simultaneously, resends the PDSCH data information of the UE. This will undoubtedly cause the waste of retransmission resources, increase the time delay of wireless data transmission, and affect the link adaptation.
Further, at high frequencies greater than 52.6GHz, when the subcarrier spacing is 960KHz, the length of 1 slot becomes 1/64=0.015ms (SCS is 15KHz at low frequency, and 1 slot is 1 ms), and the duration of the symbol and slot becomes very short relative to the low frequency, which may cause a certain limitation to the implementation of the original scheduling (one slot based on RB).
The PDCCH blind detection is to obtain the scheduling information of a certain user by using the RNTI to detect the PDCCH. Under the condition of short time slot duration, the channel condition is not changed greatly, 1 PDCCH is used for scheduling a plurality of PDSCHs, the consumption of DCI signaling is reduced, meanwhile, the PDCCH monitoring granularity can be reduced under the condition of not influencing the scheduling granularity, and therefore the pressure of PDCCH blind detection is reduced, and the consumption of UE power is reduced to a certain extent.
Furthermore, the enhancement of the NR-U to the HARQ mechanism is mainly embodied by introducing the PDSCH grouping indication in the dynamic codebook feedback scheme. The grouping instruction indicates the display of the scheduling information of the PDSCH, and a plurality of PDSCHs fed back at one time point are grouped into the same group. Once a set of PDSCHs are not fed back at a predetermined position due to LBT or the like, the feedback may be continued to the next time point designated by the base station at which uplink data may be fed back. When the base station does not receive a PDSCH grouping or feedback information of any PDSCH in the grouping at a preset time point, retransmission can be directly initiated. In order to avoid the overlarge downlink control information overhead caused by the overlarge grouping, at most two groups are simultaneously arranged on the PDSCH specified in the NR-U.
When NR-U coexists with other systems, there may be a case where multiple HARQ processes cannot receive and feed back in time. To cope with this situation, the NR-U also supports one-time full HARQ process feedback. The base station can directly initiate all PDSCH processes to the terminal through downlink control to carry out HARQ feedback indication. After receiving the indication, the terminal feeds back all the received PDSCH processes. The failure to send feedback due to LBT failure is not considered because the trigger signal and feedback are in the same COT.
In the related technology, in 60GHz, before data transmission, gNB firstly sends PDCCH to UE, user scheduling information is acquired by PDCCH blind detection, then gNB schedules a plurality of PDSCHs according to the result of PDCCH blind detection, HARQ feedback information of a plurality of TB transmission blocks is fed back to PUCCH sent by UE to gNB, and at 60GHz, HARQ feedback in PUCCH is blocked probably due to channel occupation due to the existence of Wi-Fi equipment. Due to the blocking of HARQ feedback transmission, the gNB will assume that the feedback of all PDSCH data is NACK, make adjustments to the contention window, and perform additional retransmissions of all PDSCHs in the gNB. This undoubtedly results in waste of retransmission resources and increases the delay of wireless data transmission.
In the present application, after receiving a physical resource signal PDSCH sent by a base station, a terminal may be distinguished from a scheme in the prior art in which the physical resource signal is directly processed so that HARQ feedback data is transmitted to the base station after being obtained. First, after receiving the physical resource signal, first, it is detected whether the physical resource signal includes all physical resources sent by the base station.
S102, if detecting that the physical resource signal carries all physical resources, generating a first indication identifier; or, if the physical resource signal is detected not to carry all the physical resources, generating a second indication identifier.
It can be understood that, if a part of physical resources are lost or have errors along with the transmission of communication, the terminal may determine that the physical resource signal received this time does not carry all the physical resources sent by the opposite terminal base station. Otherwise, the terminal determines that the physical resource signal received this time carries all the physical resources sent by the opposite terminal base station.
Further, for the terminal determining to receive all the physical resources, it may generate a first indicator for subsequent notification to the base station that the terminal has received all the physical resources. For the terminal determining that all the physical resources are not received, it may generate a second identifier for subsequent notification to the base station, and the terminal does not receive all the physical resources.
In one mode, the indicator identifier may be 1bit, and the time-frequency resource used by the indicator identifier may be allocated by a PDCCH channel.
S103, the first indication identifier or the second indication identifier is sent to the opposite terminal base station.
And S104, generating HARQ feedback data and sending the HARQ feedback data to the opposite-end base station.
Further, for the terminal to determine that all physical resources are received, it may generate the first indicator identifier and send it to the base station. To inform the base station that the terminal has received all physical resources. And then, the data processing can be started until the corresponding HARQ feedback data is obtained, and then the HARQ feedback data is sent to the base station.
For the terminal not receiving all physical resources, it can generate a second indication identifier and send it to the base station. To inform the base station that the terminal has not received all physical resources. And then, monitoring the retransmission physical resource sent by the opposite-end base station can be started, so that after the retransmission physical resource is received subsequently, data processing is carried out until the corresponding HARQ feedback data is obtained, and then the HARQ feedback data is sent to the base station.
In the application, the target terminal receives the physical resource signal sent by the target base station under the 60GHz frequency spectrum, and detects whether the physical resource signal carries all physical resources sent by the target base station; the target terminal generates a corresponding target indication identifier based on whether the physical resource signal carries all physical resources or not and sends the corresponding target indication identifier to a target base station; if the target base station determines that the target terminal does not receive all physical resources according to the target indication identifier, a retransmission physical resource signal is sent to the opposite terminal; and if the target base station determines that the target terminal receives all physical resources according to the target indication identifier, monitoring whether HARQ feedback data sent by the opposite terminal is received or not within the prolonged monitoring time. By applying the technical scheme of the application, in the 60GHz frequency spectrum, when the user terminal and the opposite terminal base station schedule physical resources, the terminal can feed back an indicator identifier for informing whether the opposite terminal base station receives all the physical resources at the first time when receiving the physical resources, and then HARQ feedback data is sent subsequently. And further, the base station does not need to resend the physical resources once knowing that the terminal has received the indicator identifiers of all the physical resources even if the base station does not receive the feedback data within the monitoring time. Thereby avoiding the problem of unnecessary transmission power waste in the related art.
Optionally, in a possible implementation manner of the present application, after sending the first indication identifier to the peer base station, the method further includes:
and generating corresponding HARQ feedback data according to all the physical resources, and sending the HARQ feedback data to the opposite-end base station.
Optionally, in a possible implementation manner of the present application, after sending the second identifier to the peer base station, the method further includes:
receiving a retransmission physical resource signal sent by an opposite terminal base station, and acquiring retransmission physical resources carried in the retransmission physical resource signal;
and generating corresponding HARQ feedback data based on the retransmission physical resource, and sending the HARQ feedback data to the opposite-end base station.
Optionally, in a possible implementation manner of the present application, detecting whether the physical resource signal carries all physical resources sent by the peer base station includes:
acquiring an index number carried in a physical resource signal, wherein the index number records identifiers corresponding to all physical resources;
and detecting whether the physical resource signals carry all the physical resources or not according to the identifiers corresponding to all the physical resources recorded in the index numbers.
Further, in the process of determining whether the physical resource signal carries all the physical resources sent by the opposite-end base station, the terminal may perform the received physical resource query through the index number carried in the physical resource signal, so as to determine whether all the physical resources are received.
It can be understood that, for example, when the index indicates that all the physical resources of this time are resource 1, resource 2, and resource 3, the terminal may detect whether the physical resources received by the terminal itself cover the 3 resources. If all physical resources are deemed to be received. If there are only 2, it is considered that the missing physical resources may be lost or have errors or the like along with the transmission of the communication. Therefore, the terminal determines that the physical resource signal received this time does not carry all the physical resources sent by the opposite terminal base station.
Optionally, in a possible implementation manner of the present application, after generating HARQ feedback data and sending the HARQ feedback data to an opposite-end base station, the method further includes:
and if the HARQ feedback data is detected to be unsuccessfully transmitted within the preset time period, when other physical resource signals transmitted by the opposite terminal base station are acquired next time, the HARQ feedback data and other HARQ feedback data generated based on other physical resource signals are transmitted to the opposite terminal base station.
Fig. 2 schematically shows a flow chart of a method of wireless data transmission according to an embodiment of the present application. As shown in fig. 2, the method is applied to a target base station, and includes:
s201, sending a physical resource signal to the opposite terminal, wherein the physical resource signal carries all physical resources and corresponding index numbers.
Further, in the present application, the base station may send a physical resource signal carrying all physical resources and corresponding index numbers to the peer terminal.
Wherein, for the index number, it can be an index number recorded with a corresponding identifier of each physical resource. For example, when all the physical resources are resource 1, resource 2, and resource 3, the identifier 1, identifier 2, and identifier 3 may exist in the index number. Respectively for informing the terminal of each physical resource data.
S202, according to the target indication identifier sent by the opposite terminal, determining whether to send the retransmission physical resource signal to the opposite terminal, wherein the target indication identifier comprises one of the first indication identifier or the second indication identifier.
Further, for the terminal, it may generate the first indication identifier when it is determined that all physical resources are received. When the base station receives the first indication identifier, the base station determines that the terminal has received all physical resources. It can be understood that, once the base station knows that the terminal has received the indicator identifiers of all the physical resources, even if the base station does not receive the feedback data within the monitoring time, the base station may continue to wait for the arrival of the feedback data by continuing to extend the monitoring time or monitor other communication channels. And thus there is no need to retransmit the physical resource. Thereby avoiding the problem of unnecessary transmission power waste in the related art.
Further, the second indicator identifier may be generated if the terminal does not determine that all physical resources are received. When the base station receives the second indication identifier, the base station determines that the terminal does not receive all physical resources. And then the base station can immediately send the retransmission physical resource signal to the base station, so that the subsequent terminal can process the data after receiving the retransmission physical resource until the corresponding HARQ feedback data is obtained, and then the HARQ feedback data is sent to the base station.
By applying the technical scheme of the application, in the 60GHz frequency spectrum, when the user terminal and the opposite terminal base station schedule physical resources, the terminal can feed back an indicator identifier for informing whether the opposite terminal base station receives all the physical resources at the first time when receiving the physical resources, and then HARQ feedback data is sent subsequently. And further, the base station does not need to resend the physical resources even if the feedback data is not received in the monitoring time after knowing that the terminal has received the indication identifiers of all the physical resources. Thereby avoiding the problem of unnecessary transmission power waste in the related art.
Optionally, in a possible implementation manner of the present application, determining whether to send a retransmission physical resource signal to an opposite terminal according to a target indication identifier sent by the opposite terminal includes:
monitoring whether HARQ feedback data sent by an opposite terminal is received or not within the prolonged monitoring time;
if the HARQ feedback data is received, judging whether the HARQ feedback data is NACK data;
if yes, sending a retransmission physical resource signal corresponding to the NACK data to the opposite terminal;
and if not, sending the next physical resource signal to the opposite terminal.
Optionally, in a possible implementation manner of the present application, determining whether to send a retransmission physical resource signal to an opposite terminal according to a target indication identifier sent by the opposite terminal includes:
and if receiving a second indication identifier sent by the opposite terminal, immediately sending a retransmission physical resource signal to the opposite terminal.
Optionally, in a possible implementation manner of the present application, monitoring whether HARQ feedback data sent by an opposite terminal is received within an extended monitoring time includes:
and if the HARQ feedback data is not received in the prolonged monitoring time, continuously monitoring whether the HARQ feedback data sent by the opposite terminal exists on other pre-allocated communication channels.
Further, the base station sends a PDCCH to indicate time-frequency resources fed back by the PDSCH and the HARQ, and indicates an identifier to feed back required uplink resources, and then sends corresponding data in the PDSCH;
after receiving all PDSCHs through power, the terminal judges whether all PDSCHs are received, and sends an indicator with an indicator identifier of 1bit to inform the base station terminal whether all PDSCHs are received.
After receiving the indicator, for example, if the indicator is 1, which means that all PDSCHs are received, the base station will extend the monitoring time and use the auxiliary resources, that is, if no HARQ feedback is received on the first PUCCH due to LBT failure, monitoring is performed on the predefined auxiliary resources; and if the indicator is 0, performing the feedback according to the original HARQ.
The base station receives the HARQ feedback, and if all PDSCH feedbacks are ACK, new data transmission is carried out; and if the HARQ feedback of the PDSCH is NACK, retransmitting the PDSCH, and designing a new NDI value and a new K1 value.
In another mode, when configuring feedback resources, the present application may configure a plurality of PUCCHs, or extend the duration of the PUCCHs to design a dynamic sliding window. The specific process is as follows:
the base station sends a PDCCH to indicate a PDSCH and a pre-configured HARQ feedback time-frequency resource (the auxiliary resource is defined as five PUCCH resources (x can be 1,2,3,4,5)), and indicates an identifier to feed back required uplink resources, and then sends corresponding data in the PDSCH;
after receiving all PDSCHs through power, the terminal judges whether all PDSCHs are received, and sends an indicator with an indicator 1bit to inform the base station terminal whether all PDSCHs are received.
The base station receives the indicator identifier, if the indicator is 1, which means that all PDSCHs are received, the base station will extend the listening time and use the auxiliary resource, i.e. if no HARQ feedback is received on the first PUCCH due to LBT failure, listening can be performed on the following four PUCCHs again;
if the LBT successfully receives the HARQ feedback on the first PUCCH, the base station allocates the remaining pre-configured 4 PUCCH resources to the transmission of other signals or channels, or may repeatedly send the HARQ feedback to improve reliability.
The base station receives the HARQ feedback, and if all PDSCH feedbacks are ACK, new data transmission is carried out; and if the HARQ feedback of the PDSCH is NACK, retransmitting the PDSCH, and designing a new NDI value and a new K1 value.
The scheme has the advantages that: under the condition that 60GHz non-authorization and WiFi coexist, instant feedback can be provided under the condition that LBT fails, a terminal does not need to wait for the allocation of new PUCCH resources, the waste of unnecessary retransmission resources is reduced, and quick link self-adaption is provided; when the PUCCH has been received in a certain slot, the base station may dynamically use the remaining slots for other signals and channels, or may repeatedly transmit the PUCCH in all indicated slots to improve reliability.
In another way, when configuring resources, the present application designs to automatically defer HARQ feedback information that cannot be sent due to LBT failure to a next time point at which uplink data can be sent for hybrid HARQ feedback. The specific process is as follows:
the base station sends a PDCCH to indicate a PDSCH and a pre-configured HARQ feedback time-frequency resource (the auxiliary resource is defined as a next PUCCH feedback resource) and indicate an identifier to feed back a required uplink resource, and then corresponding data is sent in the PDSCH;
after receiving all PDSCHs through power, the terminal judges whether all PDSCHs are received, and sends an indicator with an indicator 1bit to inform the base station terminal whether all PDSCHs are received.
The base station receives the indicator identifier, if the indicator is 1, which means that all the PDSCHs are received, the base station prolongs the monitoring time and uses auxiliary resources, namely if no HARQ feedback is received on the first PUCCH due to LBT failure, the base station automatically postpones to the next time point that uplink data can be sent, and performs hybrid HARQ feedback on the next group of PDSCHs;
through RRC signaling configuration, the format of the first PUCCH is set to be format 0/1, and the format of the PUCCH fed back by the second hybrid HARQ is set to be format 2/3/4 capable of long feedback information.
Fig. 3 schematically shows a flow diagram of a system for wireless data transmission according to an embodiment of the present application. As shown in fig. 3, includes:
s301, under a 60GHz frequency spectrum, a target terminal receives a physical resource signal sent by a target base station and detects whether the physical resource signal carries all physical resources sent by the target base station;
s302, the target terminal generates a corresponding target indication identifier based on whether the physical resource signal carries all the physical resources or not and sends the target indication identifier to the target base station;
s303, if the target base station determines that the target terminal does not receive all physical resources according to the target indication identifier, sending a physical resource retransmission signal to the opposite terminal; and if the target base station determines that the target terminal receives all physical resources according to the target indication identifier, monitoring whether HARQ feedback data sent by the opposite terminal is received or not within the prolonged monitoring time.
In the application, the target terminal receives the physical resource signal sent by the target base station under the 60GHz frequency spectrum, and detects whether the physical resource signal carries all physical resources sent by the target base station; the target terminal generates a corresponding target indication identifier based on whether the physical resource signal carries all physical resources or not and sends the target indication identifier to a target base station; if the target base station determines that the target terminal does not receive all physical resources according to the target indication identifier, a retransmission physical resource signal is sent to the opposite terminal; and if the target base station determines that the target terminal receives all physical resources according to the target indication identifier, monitoring whether HARQ feedback data sent by the opposite terminal is received or not within the prolonged monitoring time. By applying the technical scheme of the application, in the 60GHz frequency spectrum, when the user terminal and the opposite-end base station schedule the physical resources, the terminal can feed back an indicator identifier used for informing whether the opposite-end base station receives all the physical resources or not at the first time when receiving the physical resources, and then send HARQ feedback data subsequently. And further, the base station does not need to resend the physical resources even if the feedback data is not received in the monitoring time after knowing that the terminal has received the indication identifiers of all the physical resources. Thereby avoiding the problem of unnecessary transmission power waste in the related art.
Optionally, in another embodiment of the present application, as shown in fig. 4, the present application further provides an apparatus for wireless data transmission. The method includes an obtaining module 401, a detecting module 402, a sending module 403, and a generating module 404, and is applied to a target terminal, and includes:
an obtaining module 401, configured to obtain a physical resource signal sent by an opposite-end base station, and detect whether the physical resource signal carries all physical resources sent by the opposite-end base station;
a detecting module 402, configured to generate a first indicator identifier if it is detected that the physical resource signal carries all the physical resources; or, if it is detected that the physical resource signal does not carry all the physical resources, generating a second indication identifier;
a sending module 403, configured to send the first indication identifier or the second indication identifier to the peer base station;
a generating module 404 configured to generate HARQ feedback data and send the HARQ feedback data to the peer base station.
In the application, upper layer configuration information can be obtained, wherein the upper layer configuration information at least comprises a lead code; transmitting access data containing the lead code to an opposite-end base station under a 60GHz frequency spectrum, and starting monitoring a random access channel with the opposite-end base station; if the response message sent by the opposite terminal base station is not monitored in the initial monitoring time, periodically transmitting the access data to the opposite terminal base station by using a preset monitoring strategy, wherein the monitoring strategy is a strategy for changing the monitoring time along with the increase of the transmission times; and if receiving a response message sent by the opposite terminal base station, stopping monitoring a random access channel with the opposite terminal base station. By applying the technical scheme of the application, in the signal access process of the user terminal and the opposite-end base station, the monitoring time of transmitting the lead code to the opposite-end base station is flexibly changed by monitoring the monitoring time of the random access channel of the opposite-end base station in the frequency spectrum of 60GHz, so that the problem of unnecessary power waste caused by the fact that the random access channel direct to the base station can only be monitored in fixed monitoring time in the related technology is avoided.
In another embodiment of the present application, the obtaining module 401 further includes:
an obtaining module 401, configured to generate corresponding HARQ feedback data according to the all physical resources, and send the HARQ feedback data to the peer base station.
In another embodiment of the present application, the obtaining module 401 further includes:
an obtaining module 401, configured to receive a retransmission physical resource signal sent by the peer base station, and obtain a retransmission physical resource carried in the retransmission physical resource signal;
an obtaining module 401, configured to generate corresponding HARQ feedback data based on the retransmission physical resource, and send the HARQ feedback data to the peer base station.
In another embodiment of the present application, the obtaining module 401 further includes:
an obtaining module 401 configured to obtain an index number carried in the physical resource signal, where the index number records identifiers corresponding to all physical resources;
the obtaining module 401 is configured to detect whether the physical resource signal carries all the physical resources according to the identifiers corresponding to all the physical resources recorded in the index number.
In another embodiment of the present application, the obtaining module 401 further includes:
and if the HARQ feedback data is detected to be unsuccessfully transmitted within the preset time period, when other physical resource signals transmitted by the opposite terminal base station are acquired next time, the HARQ feedback data and other HARQ feedback data generated based on the other physical resource signals are transmitted to the opposite terminal base station.
Fig. 5 is a block diagram illustrating a logical structure of an electronic device in accordance with an exemplary embodiment. For example, the electronic device 500 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.
In an exemplary embodiment, there is also provided a non-transitory computer readable storage medium, such as a memory, including instructions executable by an electronic device processor to perform a method of wireless data transmission, the method comprising: acquiring a physical resource signal sent by an opposite terminal base station, and detecting whether the physical resource signal carries all physical resources sent by the opposite terminal base station; if the physical resource signal is detected to carry all the physical resources, generating a first indication identifier; or, if it is detected that the physical resource signal does not carry all the physical resources, generating a second indication identifier; sending the first indication identifier or the second indication identifier to the opposite-end base station; and generating HARQ feedback data and sending the HARQ feedback data to the opposite terminal base station. Optionally, the instructions may also be executable by a processor of the electronic device to perform other steps involved in the exemplary embodiments described above. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
In an exemplary embodiment, there is also provided an application/computer program product including one or more instructions executable by a processor of an electronic device to perform the above-described method of wireless data transmission, the method comprising: acquiring a physical resource signal sent by an opposite terminal base station, and detecting whether the physical resource signal carries all physical resources sent by the opposite terminal base station; if the physical resource signal is detected to carry all the physical resources, generating a first indication identifier; or, if it is detected that the physical resource signal does not carry all the physical resources, generating a second indication identifier; sending the first indication identifier or the second indication identifier to the opposite terminal base station; and generating HARQ feedback data and sending the HARQ feedback data to the opposite terminal base station. Optionally, the instructions may also be executable by a processor of the electronic device to perform other steps involved in the exemplary embodiments described above.
Fig. 5 is an exemplary diagram of the computer device 50. Those skilled in the art will appreciate that the schematic diagram 5 is merely an example of a computer device 50 and is not intended to limit the computer device 50 and may include more or fewer components than shown, or some components may be combined, or different components, e.g., the computer device 50 may also include input output devices, network access devices, buses, etc.
The Processor 502 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. The general purpose processor may be a microprocessor or the processor 502 may be any conventional processor or the like, the processor 502 being the control center for the computer device 50 and the various interfaces and lines connecting the various parts of the overall computer device 50.
The memory 501 may be used to store computer readable instructions 503 and the processor 502 may implement the various functions of the computer device 50 by executing or executing the computer readable instructions or modules stored in the memory 501 and invoking the data stored in the memory 501. The memory 501 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data created according to the use of the computer device 50, and the like. In addition, the Memory 501 may include a hard disk, a Memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash Memory Card (Flash Card), at least one disk storage device, a Flash Memory device, a Read-Only Memory (ROM), a Random Access Memory (RAM), or other non-volatile/volatile storage devices.
The modules integrated by the computer device 50 may be stored in a computer-readable storage medium if they are implemented in the form of software functional modules and sold or used as separate products. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by hardware related to computer readable instructions, which may be stored in a computer readable storage medium, and when the computer readable instructions are executed by a processor, the steps of the method embodiments may be implemented.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (12)
1. A method for wireless data transmission, applied to a target terminal, includes:
acquiring a physical resource signal sent by an opposite terminal base station, and detecting whether the physical resource signal carries all physical resources sent by the opposite terminal base station;
if the physical resource signal is detected to carry all the physical resources, generating a first indication identifier; or, if it is detected that the physical resource signal does not carry all the physical resources, generating a second indication identifier, where the indication identifier is used to inform an opposite-end base station whether all the physical resources are received;
sending the first indication identifier or the second indication identifier to the opposite terminal base station;
and generating HARQ feedback data and sending the HARQ feedback data to the opposite terminal base station.
2. The method of claim 1, wherein after the sending the first indication identifier or the first indication identifier to the peer base station, further comprising:
and generating corresponding HARQ feedback data according to all the physical resources, and sending the HARQ feedback data to the opposite-end base station.
3. The method of claim 1, wherein after said sending said second indication identifier or to said correspondent base station, further comprising:
receiving a retransmission physical resource signal sent by the opposite terminal base station, and acquiring retransmission physical resources carried in the retransmission physical resource signal;
and generating corresponding HARQ feedback data based on the retransmission physical resources, and sending the HARQ feedback data to the opposite-end base station.
4. The method of claim 1, wherein the detecting whether the physical resource signal carries all physical resources sent by the peer base station includes:
acquiring an index number carried in the physical resource signal, wherein the index number records identifiers corresponding to all physical resources;
and detecting whether the physical resource signals carry all the physical resources or not according to the identifiers corresponding to all the physical resources recorded in the index numbers.
5. The method of claim 1, wherein after the generating the HARQ feedback data and transmitting the HARQ feedback data to the peer base station, further comprising:
and if the HARQ feedback data is detected to be unsuccessfully transmitted within the preset time period, when other physical resource signals transmitted by the opposite terminal base station are acquired next time, the HARQ feedback data and other HARQ feedback data generated based on the other physical resource signals are transmitted to the opposite terminal base station.
6. A method for wireless data transmission, applied to a target base station, includes:
sending a physical resource signal to an opposite terminal, wherein the physical resource signal carries all physical resources and corresponding index numbers;
determining whether to send a retransmission physical resource signal to the opposite terminal according to a target indication identifier sent by the opposite terminal, wherein the target indication identifier comprises one of a first indication identifier or a second indication identifier;
wherein, the determining whether to send the retransmission physical resource signal to the opposite terminal according to the target indication identifier sent by the opposite terminal includes:
if a first indication identifier sent by the opposite terminal is received, determining to increase the initial monitoring time to an extended monitoring time, wherein the first indication identifier is used for representing that the opposite terminal has received all the physical resources;
monitoring whether HARQ feedback data sent by the opposite terminal is received or not within the prolonged monitoring time;
if the HARQ feedback data is received, judging whether the HARQ feedback data is NACK data;
if so, sending a retransmission physical resource signal corresponding to the NACK data to the opposite terminal;
and if not, sending a next physical resource signal to the opposite terminal.
7. The method of claim 6, wherein the determining whether to send the retransmitted physical resource signal to the peer terminal according to the target indicator sent by the peer terminal comprises:
and if the second indication identifier sent by the opposite terminal is received, immediately sending the retransmission physical resource signal to the opposite terminal.
8. The method of claim 6, wherein the monitoring whether the HARQ feedback data sent by the peer terminal is received in the extended listening time comprises:
and if the HARQ feedback data is not received in the prolonged monitoring time, continuously monitoring whether the HARQ feedback data sent by the opposite terminal exists on other pre-allocated communication channels.
9. A system for wireless data transmission, comprising:
under a 60GHz frequency spectrum, a target terminal receives a physical resource signal sent by a target base station and detects whether the physical resource signal carries all physical resources sent by the target base station;
the target terminal generates a corresponding target indication identifier based on whether the physical resource signal carries all the physical resources or not, and sends the target indication identifier to the target base station, wherein the indication identifier is used for informing an opposite terminal base station whether all the physical resources are received or not;
if the target base station determines that the target terminal does not receive all physical resources according to the target indication identifier, a retransmission physical resource signal is sent to the target terminal; and if the target base station determines that the target terminal receives all physical resources according to the target indication identifier, monitoring whether HARQ feedback data sent by the opposite terminal is received or not within the prolonged monitoring time.
10. An apparatus for wireless data transmission, applied to a target terminal, comprising:
an obtaining module, configured to obtain a physical resource signal sent by an opposite-end base station, and detect whether the physical resource signal carries all physical resources sent by the opposite-end base station;
a detection module configured to generate a first indication identifier if the physical resource signal is detected to carry all the physical resources; or, if it is detected that the physical resource signal does not carry all the physical resources, generating a second indication identifier, where the indication identifier is used to inform an opposite terminal base station whether all the physical resources are received;
a sending module configured to send the first indication identifier or the second indication identifier to the peer base station;
a generating module configured to generate HARQ feedback data and send the HARQ feedback data to the opposite-end base station.
11. An electronic device, comprising:
a memory for storing executable instructions; and the number of the first and second groups,
a processor for display with the memory to execute the executable instructions to perform the operations of the method of wireless data transmission of any of claims 1-8.
12. A computer-readable storage medium storing computer-readable instructions that, when executed, perform the operations of the method of wireless data transmission of any of claims 1-8.
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