CN101237308A - Data transmission method, access network and access terminal - Google Patents
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Abstract
The invention discloses a data transmission method, an access network and an access terminal, wherein, the access network AN transmits a retransmission extension indication or a retransmission termination indication by sending a keep-alive message; the access terminal AT extends retransmission times or terminates the present retransmission process according to the operation instruct of data retransmission. The retransmission extension indication and the retransmission termination indication can adopt the same physical signal and are extinguished only through the sending time; can also adopt different signals and are directly distinguished. The retransmission termination indication has less sending power consumption and occupied bandwidth ratio, so the cost of the system can be saved.
Description
Technical Field
The invention relates to the field of communication, in particular to a data transmission technology.
Background
The trend of Voice services from circuit switching to packet switching is inevitable, and implementing VoIP (Voice over IP) technology in mobile communication is the direction of development of new generation mobile communication. When implementing VoIP service, in order to improve the utilization rate of system resources, special processing is required in terms of resource distribution and resource assignment.
For example, in the mobile broadband radio access technology, Air Interface Evolution (Air Interface Evolution) and Long Term Evolution (LTE), when resource distribution is performed, an Orthogonal Frequency Division Multiplexing (OFDM) technology is selected as a downlink physical layer technology. The OFDM technique divides physical layer resources in a wireless communication system into a number of orthogonal narrowband subcarriers in the frequency domain, and high-speed data streams are transmitted in parallel on each subcarrier by serial-to-parallel conversion. The narrow-band characteristic of the subcarrier can overcome the influence of multipath, so that the interference between symbols is greatly eliminated; due to the orthogonal characteristic of the subcarriers, namely, the frequency spectrums of the subcarriers are mutually overlapped, the utilization rate of the frequency spectrums is improved.
OFDM is a multi-user scheduling system, and when transmitting data, AN (Access Network ) needs to assign resources to a selected AT (Access Terminal) AT each scheduling time. When performing resource assignment, sending a FLAM (forward resource assignment) or RLAM (reverse resource assignment) message to the selected AT, wherein the message format of the assignment message is shown in table 1 and carries auxiliary demodulation information such as the resources allocated for the user, the coding format used, and the like.
TABLE 1
The "persistent" field in the message structure shown in table 1 is used to indicate whether the assignment is persistent assignment, and if set to 1, the assignment is persistent resource assignment, and the resources obtained by the user at this time will be continuously valid until the AN side sends a de-assignment (explicit or implicit) message to end the current assignment; if set to 0, non-persistent resource assignment is made, at which point the resources available to the user and the maximum resource utilization time available are specified by the assignment message.
Since a system needs to consume a certain bandwidth and power every time an assignment message is sent, in order to improve the utilization rate of Channel resources, the prior art related to the present invention provides a method for performing persistent resource assignment through an SP Channel (Start-of-Packet initial Channel), where the SPChannel has two states of "ON" and "OFF", where "ON" information corresponding to the "ON" state is represented as new Packet Start information and keep-alive information, and the two information are sent ON different physical frames, for example, if the transmission of an AT new Packet is sent ON a 36N + K frame, the ON information sent ON the frame is interpreted as a new Packet Start, and the ON information sent ON other frames is interpreted as Channel resource maintenance. The prior art just uses the SP Channel to send "ON" information denoted as keep-alive information to instruct AT to perform Channel resource maintenance. The SP Channel corresponds to a forward frequency domain resource block, and if the forward frequency domain resource block is continuously allocated to a certain user currently, the keep-alive indication corresponding to the forward frequency domain resource block is used by the user.
As can be seen from the prior art, it only provides a method for persistently assigning resources through SP Channel, but for a non-persistently assigned user, if the user has reached the maximum resource utilization time but has not demodulated data correctly, according to the current scheme, the AN can use the already allocated resources for transmission AT this time, and AT this time, the AN needs to resend a special forward assignment message, and the radio resources assigned to the AT in a non-persistently assigned manner are continuously assigned to the AT, so that the AT receives the retransmitted data AT the corresponding resource location. Because of the limitation of the format of the assignment message, the assignment message must carry the information of all fields as shown in table 1, and these data have no practical meaning, but consume a certain amount of bandwidth and power, which will certainly increase the overhead of the system.
In addition, for the user which is not continuously assigned, if the user is in the process of retransmission and the system resources are temporarily insufficient at the moment, the AN sends a resource assignment message to inform the target user, the transmission of the current data is terminated, and the resource use right of the user is forcibly cancelled. Due to the limitation of the format of the assignment message, the assignment message must carry information of all fields as shown in table 1, and these data are not meaningful, but consume a certain amount of bandwidth and power, which also increases the overhead of the system.
Disclosure of Invention
Embodiments of the present invention provide a data transmission method, an access network, and an access terminal, which can save overhead of a system when notifying a user to continue retransmitting data.
The embodiment of the invention is realized by the following technical scheme that:
an embodiment of the present invention provides a data transmission method, including:
when the AN does not receive the feedback information correctly received by the AT, the AN decides a retransmission operation instruction which needs to be sent according to the current resource condition and transmits the retransmission operation instruction through the sent keep-alive information;
and the AT receives the retransmission operation instruction and carries out corresponding retransmission operation according to the retransmission operation instruction.
An embodiment of the present invention further provides an access network, which includes:
a decision unit, configured to decide, according to a current resource condition, a retransmission operation instruction that needs to be sent, after the access network AN does not receive feedback information correctly received by the access terminal AT;
and the indicating unit is used for transmitting the retransmission operation indication after the decision of the decision unit through the sent keep-alive information.
An embodiment of the present invention further provides an access terminal, which includes:
a receiving unit, configured to receive a retransmission operation instruction sent by AN;
and the data transmission unit is used for carrying out corresponding retransmission operation according to the retransmission operation instruction received by the receiving unit.
It can be seen from the specific implementation scheme provided by the above embodiment of the present invention that, when the current data reaches the appointed transmission times and the AT fails to receive correctly, the AN transmits the retransmission extension indication by sending the keep-alive information to notify the current user that the AN continues to use the radio resource assigned for the current data transmission in the non-persistent assignment manner, and retransmits the data that has failed to receive correctly, and the transmission power and occupied bandwidth of the retransmission extension indication are less, so that the overhead of the system can be saved.
Drawings
FIG. 1 is a flow chart of a first embodiment provided by the present invention;
FIG. 2 is a schematic structural diagram of a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a third embodiment of the present invention.
Detailed Description
The first embodiment of the present invention is a data transmission method, before implementing the first embodiment, AN and AT may negotiate in a resource allocation manner, may make a prior agreement in a layer 3 signaling manner when establishing a connection, and may also fix parameters of the entire system. The content of negotiation includes:
1. whether to utilize SP to expand and assign and de-assign to the non-persistent allocation mode;
2. mode of AT listening to SP:
the AT monitors periodically based on a set time interval, such as monitoring only AT the Nth retransmission time of each non-continuous assignment;
an AT event-based listening mechanism, such as listening only when the maximum retransmission limit is reached and not received correctly;
the AT listens continuously, that is, the AT listens throughout the retransmission.
3. Different meanings of different status indications of the SP channel:
the SP channel indicates retransmission extension/termination command transmission in the "ON" state and indicates that extension/retransmission continuation is not currently required in the "OFF" state.
If the SP channel adopts an "ON" state to represent the keep-alive information, the retransmission extension indication and the retransmission termination indication in the embodiment of the present invention both adopt the same signaling mode, and use different transmission modes to distinguish whether the information currently transmitted ON the SP channel is retransmission extension or retransmission termination.
If there are more ON states for the SP channel, different "ON" states can be used to indicate retransmission extension and retransmission termination, and the SP channel can be used for persistent assignment as retransmission extension/transmission termination usage.
The flow of the first embodiment is shown in fig. 1, and includes:
step S101, AN allocates non-continuous wireless resource to AT through resource assignment message, and starts first data transmission AT resource block position corresponding to allocated wireless resource.
Step S102, the AT receives the resource assignment message and obtains the allocated non-continuous wireless resource according to the received resource assignment message. And receives data on the corresponding resource block.
Step S103, AT judges whether the receiving is correct, if the receiving is correct, step S104 is executed, namely, the correctly received information is fed back through the physical layer special channel; then step S105 is executed, that is, if the AN receives the correctly received feedback, the transmission is stopped, and the non-continuous assignment process is ended; if the AT cannot receive correctly, step S106 is performed, i.e., the incorrectly received information is fed back through the physical layer dedicated channel, and then step S107 is performed.
Step S107, after receiving the information which is fed back by the AT and is not correctly received, the AN judges whether the current data reaches the appointed transmission times, if not, the step S108 is executed; if so, step S113 is performed.
Step S108, the AN decides whether to retransmit the data which the AT does not correctly receive according to the current resource condition, if yes, the step S109 is executed; if the AN decides to interrupt the transmission of the current data, step S111 is performed.
Step S109, the AN retransmits the data that the AT did not receive correctly according to the normal HARQ process flow, and informs the AT. Then, step S110 is performed.
In step S110, the AT defaults to continue receiving the data transmitted by the AN AT the resource block position corresponding to the allocated radio resource AT the appointed time. Then step S103 is performed.
Step S111, before the appointed transmission times of the current data are reached, the AN stops the transmission of the current data, and sends a keep-alive information transmission retransmission stop instruction through the SP channel to perform de-assignment, and informs the AT that the transmission of the current data is stopped. Then, step S112 is performed.
The manner of sending the retransmission termination indication through the SP channel in step S111 may be periodically triggered at regular time intervals.
Step S112, the AT monitors the SP channel according to the set monitoring mode, and if the retransmission termination indication is received before the agreed transmission times of the current data are reached, it is known that the transmission of the current data is terminated, and then the radio resource used for the current data transmission is cleared, and a new assignment is waited.
In step S112, the set listening mode includes:
the AT periodically monitors the SP channel based on a set time interval; alternatively, the AT continues to listen to the SP channel throughout the data transmission.
Step S113, the AN judges whether the current retransmission times need to be expanded according to the current resource condition, if so, the SP channel function is opened, the keep-alive signal is sent through the SP channel to transmit the retransmission expansion indication, and the AT is informed to continue using the allocated non-persistent wireless resources to retransmit the data; and if the retransmission is not needed, performing a normal HARQ processing flow.
Step S114, the AT monitors the SP channel according to the set monitoring mode, if the transmission retransmission expansion indication sent by the AN is received, the AT considers that the data is retransmitted continuously, and continuously receives the data on the allocated wireless resource block, and combines the received data with the data obtained by the previous transmission. If the transmission retransmission expansion indication is not received, it indicates that the AN does not utilize the allocated radio resource to perform retransmission expansion processing, and AT this time, the AT performs a normal HARQ processing procedure.
In step S114, the set listening mode includes:
the AT periodically monitors the SP channel based on a set time interval; or,
the AT monitors the SP channel when the maximum data transmission times are reached and the data is not received correctly; or,
the AT continues to listen to the SP channel throughout the data transmission.
In step S114, the keep-alive information transmission retransmission extension indication is sent through the SP channel, and event triggering may be adopted, for example, triggering when the appointed transmission times are reached.
The above embodiment is described by taking the example that the AN transmits the retransmission extension instruction or the retransmission termination instruction through the Keep-alive information sent by the SP information as AN example, and the embodiment of the present invention may also transmit the retransmission extension instruction or the retransmission termination instruction through the Keep-alive information sent by the Keep-alive channel.
In addition, the above embodiment is described by taking an example of transmitting the retransmission extension indication or the retransmission termination indication by using the keep-alive information transmitted in the "ON" state, and it can be seen that, at this time, since the retransmission extension indication and the retransmission termination indication both use the same signal transmission mode, different transmission times are used to distinguish whether the keep-alive information currently transmitted is the retransmission extension indication or the retransmission termination indication, that is, the keep-alive information transmitted before the appointed transmission times arrives represents the retransmission termination indication; the keep-alive information transmitted when the agreed transmission times arrive indicates a retransmission extension indication. When the retransmission extension indication or the retransmission termination indication is transmitted through the keep-alive information sent in multiple "ON" states, separate states may also be allocated for the retransmission extension indication and the retransmission termination indication, in this case, the retransmission extension indication or the retransmission termination indication may be sent at any time, and the signal states used by the retransmission extension indication and the retransmission termination indication may be fixed by the system or may be determined by negotiation.
A second embodiment provided by the present invention is an access network, the structure of which is shown in fig. 2, and the access network includes: a decision unit and an indication unit.
The decision unit decides a retransmission operation instruction to be sent according to the current resource condition after the access network AN does not receive the feedback information correctly received by the access terminal AT; the retransmission operation indication comprises a retransmission extension indication or a retransmission termination indication. The method comprises the following specific steps:
when determining that the wireless resources assigned for the data transmission by the non-continuous assignment mode can be continuously used to transmit the data which cannot be correctly received by the AT according to the current resource condition, the AN decides to transmit the retransmission extension indication by the sent keep-alive information; or,
and when determining that the wireless resources assigned for the data transmission by the non-continuous assignment mode cannot be continuously used to transmit the data which cannot be correctly received by the AT according to the current resource condition, the AN decides to transmit a retransmission termination indication by sending the keep-alive information.
When the AN does not receive the feedback information correctly received by the AT, determining whether the current data transmission reaches the appointed transmission times;
when the judgment result is that the current data transmission reaches the appointed transmission times and the data which cannot be correctly received by the wireless resource transmission AT assigned for the data transmission in the non-continuous assignment mode can be continuously transmitted according to the current resource condition, the AN decides to transmit the retransmission extension indication through the sent keep-alive information;
when the current data transmission does not reach the appointed transmission times and the AT cannot continuously transmit the data which cannot be correctly received by the wireless resource assigned for the data transmission in the non-continuous assignment mode according to the current resource condition, the AN decides to transmit a retransmission termination indication by sending the keep-alive information.
And the indicating unit is used for transmitting the retransmission operation indication after the decision of the decision unit through the sent keep-alive information. The retransmission operation indication can be transmitted through keep-alive information sent by a packet start SP channel; the retransmission operation indication can also be transmitted through Keep-alive information sent by a Keep-alive channel. The specific implementation is the same as that described in relation to the first embodiment and will not be described in detail here.
A third embodiment of the present invention is an access terminal, whose structure is shown in fig. 3, including: a receiving unit and a data transmission unit.
The receiving unit monitors a packet initial SP channel or a Keep-alive channel according to a set monitoring mode; and if receiving a retransmission expansion indication from the SP channel or the Keep-alive channel, informing the data transmission unit to continuously retransmit the data. The specific implementation is the same as that described in relation to the first embodiment and will not be described in detail here. Wherein the set listening mode comprises:
the AT periodically monitors an SP channel or a Keep-alive channel based on a set time interval; or,
the AT monitors an SP channel or a Keep-alive channel when the maximum data transmission times are reached and the data is not received correctly; or,
the AT continuously listens to the SP channel or Keep-alive channel throughout the data transmission.
And the data transmission unit receives the notification of the data transmission unit, continues to receive data at the position corresponding to the wireless resource assigned for data transmission in a non-continuous assignment mode, and combines the data received this time with the data received in the previous data transmission processes. And then performs demodulation based on the combined data. The specific implementation is the same as that described in relation to the first embodiment and will not be described in detail here.
And if the receiving unit receives a retransmission termination instruction from an SP channel or a Keep-alive channel, the receiving unit informs the data transmission unit to release the wireless resources used for transmitting the current data. Wherein the set listening mode comprises:
the AT periodically monitors the SP channel based on a set time interval; or,
the AT continues to listen to the SP channel throughout the data transmission.
And after receiving the trigger of the receiving unit, the data transmission unit releases the wireless resource used for transmitting the current data.
It can be seen from the specific implementation scheme provided by the above embodiment of the present invention that, when the current data reaches the appointed transmission times and the AT fails to receive correctly, the AN sends the retransmission extension instruction through the SP channel to notify the current user that the AN continues to use the radio resource assigned to the current data in the non-persistent assignment manner, and retransmits the data that has failed to receive correctly, and since the transmission power and occupied bandwidth of the retransmission extension instruction are small, the overhead of the system can be saved.
In addition, before the current data reaches the appointed transmission times, the AN can send a retransmission termination indication through the SP channel, notify the current user, terminate the current data transmission and forcibly cancel the resource usage right of the user. Since the transmission of the retransmission termination indication consumes less power and occupies less bandwidth, the overhead of the system can be saved.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (16)
1. A method of data transmission, comprising:
when the AN does not receive the feedback information correctly received by the AT, the AN decides a retransmission operation instruction which needs to be sent according to the current resource condition and transmits the retransmission operation instruction through the sent keep-alive information;
and the AT receives the retransmission operation instruction and carries out corresponding retransmission operation according to the retransmission operation instruction.
2. The method of claim 1, wherein the process of the AN transmitting the retransmission operation indication through the sent keep-alive information specifically comprises:
the AN transmits a retransmission operation instruction through keep-alive information transmitted by a packet start SP channel; or,
and the AN transmits a retransmission operation instruction through the Keep-alive information transmitted by the Keep-alive channel.
3. The method of claim 1 or 2, wherein the retransmission operation indication comprises a retransmission extension indication or a retransmission termination indication.
4. The method as claimed in claim 3, wherein the process of the AN deciding the retransmission operation indication to be sent according to the current resource situation specifically comprises:
when determining that the wireless resources assigned for the data transmission by the non-continuous assignment mode can be continuously used to transmit the data which cannot be correctly received by the AT according to the current resource condition, the AN decides to transmit the retransmission extension indication by the sent keep-alive information; or,
and when determining that the wireless resources assigned for the data transmission by the non-continuous assignment mode cannot be continuously used to transmit the data which cannot be correctly received by the AT according to the current resource condition, the AN decides to transmit a retransmission termination indication by sending the keep-alive information.
5. The method of claim 3, further comprising:
and when the AN does not receive the feedback information correctly received by the AT, determining whether the current data transmission reaches the appointed transmission times, and deciding the retransmission operation instruction needing to be transmitted according to the judgment result.
6. The method according to claim 5, wherein said deciding a retransmission operation indication to be transmitted according to the determination result specifically comprises:
when the judgment result is that the current data transmission reaches the appointed transmission times and the data which cannot be correctly received by the wireless resource transmission AT assigned for the data transmission in the non-continuous assignment mode can be continuously transmitted according to the current resource condition, the AN decides to transmit the retransmission extension indication through the sent keep-alive information; or,
when the current data transmission does not reach the appointed transmission times and the AT cannot continuously transmit the data which cannot be correctly received by the wireless resource assigned for the data transmission in the non-continuous assignment mode according to the current resource condition, the AN decides to transmit a retransmission termination indication by sending the keep-alive information.
7. The method according to claim 3, wherein the process of receiving the retransmission operation indication and performing the corresponding retransmission operation according to the retransmission operation indication by the AT specifically comprises:
the AT monitors an SP channel or a Keep-alive channel according to a set monitoring mode, if receiving a retransmission extension instruction, the AT continues to receive data AT a position corresponding to a wireless resource assigned for data transmission in a non-continuous assignment mode, and combines the data received this time with the data received in the previous data transmission processes;
and if the retransmission termination indication is received, releasing the wireless resource used for transmitting the current data.
8. The method of claim 7, wherein the set listening mode comprises:
the AT periodically monitors an SP channel or a Keep-alive channel based on a set time interval; or,
the AT monitors an SP channel or a Keep-alive channel when the maximum data transmission times are reached and the data is not received correctly; or,
the AT continuously listens to the SP channel or Keep-alive channel throughout the data transmission.
9. An access network, comprising:
a decision unit, configured to decide, according to a current resource condition, a retransmission operation instruction that needs to be sent, after the access network AN does not receive feedback information correctly received by the access terminal AT;
and the indicating unit is used for transmitting the retransmission operation indication after the decision of the decision unit through the sent keep-alive information.
10. The network of claim 9, wherein the retransmission operation indication comprises a retransmission extension indication or a retransmission termination indication.
11. The network of claim 10, wherein the decision unit is further to:
when determining that the wireless resources assigned for the data transmission by the non-continuous assignment mode can be continuously used to transmit the data which cannot be correctly received by the AT according to the current resource condition, the AN decides to transmit the retransmission extension indication by the sent keep-alive information; or,
and when determining that the wireless resources assigned for the data transmission by the non-continuous assignment mode cannot be continuously used to transmit the data which cannot be correctly received by the AT according to the current resource condition, the AN decides to transmit a retransmission termination indication by sending the keep-alive information.
12. The network of claim 10, wherein the decision unit is further to:
when the AN does not receive the feedback information correctly received by the AT, determining whether the current data transmission reaches the appointed transmission times;
when the judgment result is that the current data transmission reaches the appointed transmission times and the data which cannot be correctly received by the wireless resource transmission AT assigned for the data transmission in the non-continuous assignment mode can be continuously transmitted according to the current resource condition, the AN decides to transmit the retransmission extension indication through the sent keep-alive information;
or,
when the current data transmission does not reach the appointed transmission times and the AT cannot continuously transmit the data which cannot be correctly received by the wireless resource assigned for the data transmission in the non-continuous assignment mode according to the current resource condition, the AN decides to transmit a retransmission termination indication by sending the keep-alive information.
13. The network of claim 9, wherein the indication unit is further to:
transmitting a retransmission operation instruction through keep-alive information transmitted by a packet start SP channel; or,
and transmitting a retransmission operation instruction through the Keep-alive information transmitted by the Keep-alive channel.
14. An access terminal, comprising:
a receiving unit, configured to receive a retransmission operation instruction sent by AN;
and the data transmission unit is used for carrying out corresponding retransmission operation according to the retransmission operation instruction received by the receiving unit.
15. The terminal of claim 14, wherein the receiving unit is configured to:
monitoring an SP channel or a Keep-alive channel according to a set monitoring mode, if receiving a retransmission extension instruction, continuously receiving data at a position corresponding to a wireless resource assigned for data transmission in a non-continuous assignment mode, and combining the data received this time with the data received in the previous data transmission processes;
and if the retransmission termination indication is received, releasing the wireless resource used for transmitting the current data.
16. The terminal of claim 15, wherein the set listening mode comprises:
the AT periodically monitors an SP channel or a Keep-alive channel based on a set time interval; or,
the AT monitors an SP channel or a Keep-alive channel when the maximum data transmission times are reached and the data is not received correctly; or,
the AT continuously listens to the SP channel or Keep-alive channel throughout the data transmission.
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| CNA2007100032337A CN101237308A (en) | 2007-01-31 | 2007-01-31 | Data transmission method, access network and access terminal |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101771519B (en) * | 2008-12-31 | 2013-08-07 | 中兴通讯股份有限公司 | Management method of message and device thereof |
| CN106301697A (en) * | 2015-06-08 | 2017-01-04 | 中国移动通信集团公司 | Control method, device and terminal are monitored in the re-transmission of a kind of data transmission |
| CN107426768A (en) * | 2017-07-05 | 2017-12-01 | 江苏中科羿链通信技术有限公司 | A kind of wireless self-organization network data transmission method |
| CN108023684A (en) * | 2016-11-04 | 2018-05-11 | 电信科学技术研究院 | A kind of data repeating method and device |
| WO2020063472A1 (en) * | 2018-09-26 | 2020-04-02 | 维沃移动通信有限公司 | Resource allocation method and device |
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2007
- 2007-01-31 CN CNA2007100032337A patent/CN101237308A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101771519B (en) * | 2008-12-31 | 2013-08-07 | 中兴通讯股份有限公司 | Management method of message and device thereof |
| CN106301697A (en) * | 2015-06-08 | 2017-01-04 | 中国移动通信集团公司 | Control method, device and terminal are monitored in the re-transmission of a kind of data transmission |
| CN106301697B (en) * | 2015-06-08 | 2019-12-06 | 中国移动通信集团公司 | retransmission monitoring control method, device and terminal for data transmission |
| CN108023684A (en) * | 2016-11-04 | 2018-05-11 | 电信科学技术研究院 | A kind of data repeating method and device |
| CN108023684B (en) * | 2016-11-04 | 2021-10-26 | 大唐移动通信设备有限公司 | Data retransmission method and device |
| CN107426768A (en) * | 2017-07-05 | 2017-12-01 | 江苏中科羿链通信技术有限公司 | A kind of wireless self-organization network data transmission method |
| CN107426768B (en) * | 2017-07-05 | 2019-08-20 | 江苏中科羿链通信技术有限公司 | A kind of wireless self-organization network data transmission method |
| WO2020063472A1 (en) * | 2018-09-26 | 2020-04-02 | 维沃移动通信有限公司 | Resource allocation method and device |
| US12047952B2 (en) | 2018-09-26 | 2024-07-23 | Vivo Mobile Communication Co., Ltd. | Resource allocation method and device |
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