WO2017050123A1

WO2017050123A1 - Method and device for sending information

Info

Publication number: WO2017050123A1
Application number: PCT/CN2016/098164
Authority: WO
Inventors: 卢有雄; 王文焕; 黄双红; 贺海港; 李书朋
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-09-25
Filing date: 2016-09-06
Publication date: 2017-03-30
Also published as: CN106559873A; CN106559873B

Abstract

The present invention provides a method and device for sending information. The method comprises: sending, by utilizing a contention unit, a contention signal of a current user equipment (UE), the contention signal being used for contenting for a data unit, used for sending user data information, for the current UE; monitoring whether there is a contention signal of another UE on the contention unit or not; and if a monitoring result shows that there is not a contention signal of another UE on the contention unit, sending, by the data unit that is obtained by means of contention using the contention signal of the current UE, the user data information that needs to be sent by the current UE. The present invention resolves the problem of half-duplex caused by independent and random communication resource selection of a UE in the related art as well as the problem of resource conflict, thereby achieving the effect that the UE selects orthogonal communication resources so as to avoid the problem of half-duplex and the problem of resource conflict.

Description

Information transmitting method and device

Technical field

The present invention relates to the field of communications, and in particular to a method and apparatus for transmitting information.

Background technique

With the development of mobile communication technology and diversified communication requirements, more and more applications such as public safety, car networking, on-site command, social network, electronic payment, and local advertising have attracted people's attention. Among them, the more typical direct communication applications such as Device-to-Device (D2D) and Vehicle Networking represent a new direction for the development of future communication technologies.

The D2D technology can work in multiple application scenarios such as full network coverage, partial network coverage, and no coverage. It allows multiple D2D user equipments (D2D User Equipment, D2D UEs) to perform direct discovery and / or direct communication. Using D2D technology can reduce the burden on the cellular network, reduce the battery power consumption of the user equipment, increase the data transmission rate, improve the robustness of the network infrastructure, meet the requirements of high-rate data transmission services and proximity services, and support no network. Direct communication under the coverage scenario can meet special communication needs such as public safety.

Vehicle networking communication is an advanced wireless communication technology that enables real-time information interaction between vehicles, vehicles, roadside infrastructure, vehicles and pedestrians, and informs each other's current status (including vehicle position, speed, acceleration, driving route, etc.). ) Knowing the road environment information, collaboratively sensing the dangerous situation of the road, and providing a variety of collision warning information in time to prevent the occurrence of road traffic safety accidents. The vehicle networking communication modes are divided into three categories: Vehicle-to-Vehicle Communications (V2V), Vehicle-to-Infrastructure Communications (V2I), and Vehicle Communication (Vehicle). -to-Pedestrian Communications (V2P for short), these three types of car networking communication modes can also be collectively referred to as Vehicle-to-Everything (referred to as V2X) communication.

Both D2D communication and V2X communication can work in a variety of network coverage scenarios, supporting direct communication between devices and devices without relying on network central nodes. The direct communication between the device and the device described below includes D2D UE and D2D UE communication, vehicle UE and vehicle UE communication, vehicle UE and Road Side Unit (RSU) communication, vehicle UE and pedestrian UE communication, etc. . For a wireless communication scenario without network coverage (ie, no central node), or a communication scenario in which the UE resource allocation is not controlled by the central node even though there is a central node, the UE can only rely on autonomously selecting resources in a random manner, relying on information obtained by itself. , choose to use wireless communication resources. The central node here may be a base station device (evolved NodeB, eNB for short), or a device such as an RSU or a UE with control functions.

In the way that the UE randomly selects resources autonomously, there will be half-duplex problems and resource conflicts. On the one hand, if two or more UEs select the same time-frequency resource, it is easy to cause interference, resulting in higher resource conflict; another On the other hand, a single transceiver UE cannot receive a message while transmitting a message. If two or more UEs choose to send data messages on the same time domain resource, they may not be able to monitor each other due to the half duplex problem. . In addition, the manner in which the UE randomly selects resources is used, and the requirements for timeliness and robustness of the higher priority UE and/or the transmission of the emergency message cannot be met.

Summary of the invention

The embodiment of the invention provides a method and a device for transmitting information, so as to at least solve the problem of half-duplex caused by the autonomous selection of communication resources by the UE in the related art in the related art, and the problem of resource conflict.

According to an aspect of the present invention, an information sending method is provided, including: using a contention unit to send a contention signal of a current user equipment UE, where the contention signal is used to compete for the current UE to send user data information. a data unit; monitoring whether there is a contention signal of another UE on the contention unit; if the monitoring result is that the contention signal of the other UE does not exist on the contention unit, using a data unit that is obtained by competing for the contention of the current UE, User data information that the current UE needs to send.

The method further includes: configuring a data resource pool and a contention area of the communication resource, where the data resource pool includes one or more of the foregoing data units, in the contention area, before the contention cell of the current user equipment UE is sent by the contention unit. The one or more competition units are included, and one of the competition units corresponds to one or more of the foregoing data units.

Further, one of the contention units is a time-frequency resource block, and one of the data units is a time-frequency resource block.

Further, the foregoing method further includes: selecting, in the case where the monitoring result is a contention signal of the other UEs on the contention unit, selecting another contention unit that is listening to idle from the contention area, where The contention unit does not listen to the contention signal for a period of time; the contention unit continues to transmit the contention signal of the current UE until the current UE competes for the data unit for transmitting the user data information.

Further, selecting another contention unit that is monitored as idle from the contention area includes: selecting another contention unit that is listening to idle from the contention area according to attribute information for describing a current attribute of the contention unit.

Further, each of the above-mentioned contention units is divided into a plurality of basic modules in the time domain, and is divided into one or a plurality of subcarrier modules in the frequency domain, wherein duration of each of the plurality of basic modules and/or Or there are multiple configurations for the starting position.

Further, the using the contention unit to send the contention signal of the current user equipment UE includes: selecting, from the contention unit, a symbol position that starts to send the contention signal of the current UE; starting from the selected symbol position, continuously transmitting within the preset time period The contention of the current UE, wherein the preset duration from the selected symbol position forms a transmission window for transmitting a contention signal on the contention unit, and each of the contention units may include one or more In the above transmission window, between any two adjacent transmission windows, a monitoring window for monitoring the competition signals of the other UEs is used.

Further, selecting, from the contention unit, the symbol position of the contention signal for starting to send the current UE includes: randomly selecting, according to the priority of the symbol position, the symbol position of the contention signal of the current UE from the contention unit.

Further, the duration of the window length of the listening window is less than the duration threshold of the idle resource.

According to another aspect of the present invention, an information sending apparatus is provided, including: a first sending unit, configured to send a contention signal of a current user equipment UE by using a contention unit, where the contention signal is used for the current UE Competing for a data unit for transmitting user data information; the monitoring unit is configured to monitor whether there is a competition signal of other UEs on the contention unit; and the second sending unit is configured to: if the monitoring result is that the competition unit is not the other UE In the case of the contention signal, the user data information that the current UE needs to transmit is transmitted using the data unit obtained by the competition of the competition signal of the current UE.

Further, the foregoing apparatus further includes: a configuration unit, configured to: before using the contention unit to send the contention signal of the current user equipment UE, configuring a data resource pool and a contention area of the communication resource, where the data resource pool includes one or more of the foregoing data units The competition area includes one or more of the above competition units, and one of the competition units corresponds to one or more of the foregoing data units.

Further, the foregoing apparatus further includes: a selecting unit, configured to: when the monitoring result is that the contention signal of the other UE exists on the contention unit, select another contention unit that is idled from the contention area, where The contention signal is not monitored for a period of time in the idle contention unit; the third sending unit is configured to continue to use the contention unit to continue to send the contention signal of the current UE until the current UE competes for sending the user data. The data unit of the information is up.

Further, the above selecting unit is further configured to select another contention unit that is monitored as idle from the contention area according to attribute information for describing a current attribute of the contention unit.

Further, the first sending unit includes: a selecting module, configured to select, from the contention unit, a symbol position to start transmitting the contention signal of the current UE; and the sending module is configured to start with the selected symbol position, and preset The contention of the current UE is continuously transmitted in the duration, wherein the preset duration from the selected symbol position forms a transmission window for transmitting a contention signal on the contention unit, and each of the contention units may include One or more of the above transmission windows, between any two adjacent transmission windows, is a listening window for monitoring the competition signals of the other UEs.

Further, the selection module is further configured to select, from the contention unit, the symbol position of the contention signal of the current UE starting to be sent randomly or according to the priority of the symbol position.

According to the embodiment of the present invention, the UE competes for the selection of the communication resource, and uses the contention unit to send the contention signal of the current user equipment UE, where the contention signal is used to compete for the current UE to use the data unit for transmitting the user data information; Whether there is a competition signal of other UEs on the other end; if the monitoring result is that there is no competition signal of other UEs on the contention unit, the user that needs to be sent by the current UE is sent by using the data unit obtained by the competition of the competition signal of the current UE. The data information solves the half-duplex problem caused by the UE's autonomous selection of communication resources in the related art, and the resource conflict problem, thereby achieving the effect of realizing the UE competing for selecting communication resources to avoid the half-duplex problem and the resource conflict problem.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a flowchart of an information transmitting method according to an embodiment of the present invention;

2 is a schematic diagram of a division of a communication resource in a time-frequency domain according to an embodiment of the present invention;

3 is a schematic structural diagram of a contention unit according to an embodiment of the present invention;

4 is a schematic diagram of transmitting a contention signal according to an embodiment of the present invention;

5 is a flow diagram of resource contention in accordance with an alternate embodiment of the present invention;

6 is a schematic structural diagram of a correspondence relationship between a contention unit and a data unit according to an alternative embodiment of the present invention;

FIG. 7 is a schematic diagram of an information transmitting apparatus according to an embodiment of the present invention.

detailed description

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

It is to be understood that the terms "first", "second" and the like in the specification and claims of the present invention are used to distinguish similar objects, and are not necessarily used to describe a particular order or order.

In this embodiment, a method for sending information is provided. FIG. 1 is a flowchart of a method for sending information according to an embodiment of the present invention. As shown in FIG. 1, the process includes the following steps:

Step S102, using a contention unit to send a contention signal of the current user equipment UE, where the contention signal is used to compete for a data unit for transmitting user data information for the current UE;

Step S104: Monitor whether there is a competition signal of other UEs on the contention unit;

Step S106: If the monitoring result is that there is no contention signal of other UEs on the contention unit, use the data unit obtained by the competition signal of the current UE to send the user data information that the current UE needs to send.

In the embodiment of the present invention, the UE competes for selecting a communication resource, and the UE competes for randomly selecting communication resources in the related art, which causes multiple UEs to use the same resource at the same time, thereby causing half-duplex problem and resource conflict problem in the communication, and further The effect of realizing the UE competing to select orthogonal communication resources to avoid the half-duplex problem and the resource conflict problem is achieved.

Optionally, before using the contention unit to send the contention signal of the current user equipment UE, the method further includes: configuring a data resource pool and a contention area of the communication resource, where the data resource pool includes one or more data units, and the competition area includes one or Multiple competing units, one competing unit corresponding to one or more data units. Further optionally, one contention unit is a time-frequency resource block, and one data unit is a time-frequency resource block.

That is, a time-frequency resource block (hereinafter referred to as a contention area) for a data unit required for contention and a time-frequency resource block (hereinafter referred to as a data resource pool) for transmitting a data unit of a user data message are configured. The contention area and data resource pool may be pre-configured by the UE device or configured by central node signaling.

Specifically, the contention area is a time-frequency resource block used by the UE to send a contention signal. As shown in FIG. 2, the contention area may be further divided into one or more contention units, where the number of competition units in the time domain or the frequency domain is At least 1; the division and size of the contention unit may be pre-configured by the UE device or configured by the central node signaling.

Due to a contention unit of the contention zone, it corresponds to one or more data units in the data resource pool. That is, if the competition succeeds on one of the competition units, it means that the competition succeeds in all the corresponding data units. The mapping relationship between the contention unit and the data unit may be pre-configured by the UE device or dynamically configured by the signaling of the central node. As shown in FIG. 2, the data unit is a radio resource in a combination of a time domain and a frequency domain, and the data resource pool includes at least one data unit; the division and size of the data unit may be pre-configured by the UE device, or may be dynamically transmitted by the central node. Configuration.

Through the embodiments of the present invention, the definition and configuration of the communication resources and the competition selection of the communication resources are implemented, so that the UE participates in the resource competition according to the competition mechanism of the present invention in the competition area, and realizes one-to-one selection of the UE and the time-frequency resources. Thereby avoiding the conflict problem caused by multiple UEs selecting the same resource.

Optionally, the foregoing method further includes:

S2. In the case that the monitoring result is that there is a competition signal of other UEs on the contention unit, another contention unit that is monitored as idle is selected from the contention area, where the idle contention unit is not monitored for a period of time. Competitive signal

S4. The contention unit continues to transmit the contention signal of the current UE by using the contention unit until the current UE competes for the data unit for transmitting the user data information.

Through the embodiment of the present invention, when the UE fails to compete on one contention unit, the UE is transferred to another contention unit to continue to compete until the corresponding data unit location is competed to ensure that the UE finally implements normal communication.

Optionally, selecting another contention unit that is monitored as idle from the contention area includes: selecting another contention unit that is listening to idle from the contention area according to attribute information used to describe a current attribute of the contention unit. That is, the idle state of the contention unit in the contention area is monitored, and another free contention unit is selected from the contention area. The idle competition unit means that the competition signal is not monitored within a certain period of time T in this competition unit, and T is the duration threshold for judging to be idle.

Selecting the symbol position in the contention unit according to the attribute information for describing the current attribute of the contention unit, thereby ensuring the power of the high priority UE and/or the emergency type message to preferentially select the communication resource, and can select the time domain orthogonally Communication resources to avoid half-duplex problems.

Optionally, each contention unit is divided into multiple basic modules in the time domain, and is divided into one or more subcarrier modules in the frequency domain, wherein the duration of each of the plurality of basic modules is and/or Or there are multiple configurations for the starting position. Optionally, each contention unit is divided into 14 basic modules in the time domain, and 12 subcarrier modules are divided into 12 subcarrier modules in the frequency domain, and each basic module corresponds to one symbol position.

That is, the contention unit is composed of multiple basic units in the time domain and a bandwidth in the frequency domain. For example, in a Long Term Evolution (LTE) system, one contention unit is a physical resource block (Physical). Resource Block, abbreviated as PRB) For example, the contention unit includes 14 symbols (standard cyclic prefix) in the time domain, that is, 14 symbol positions, which includes 12 subcarriers in the frequency domain, as shown in FIG. The minimum time unit in the time domain is a symbol, and the smallest unit in the frequency domain is a subcarrier. The following is taken as an example and will not be described.

Optionally, the using the contention unit to send the contention signal of the current user equipment UE includes:

S6. Select, from the contention unit, a symbol position that starts to send a contention signal of the current UE.

S8, starting from the selected symbol position, continuously transmitting the contention signal of the current UE for a preset duration, where the preset duration from the selected symbol position forms a transmission window for transmitting the competition signal on the contention unit, One or more transmission windows may be included on each contention unit, and a monitoring window for listening to the competition signals of other UEs between any two adjacent transmission windows.

The current UE may send its own contention signal in the transmission window, and listen to the competition signals of other UEs in the listening window.

Optionally, selecting, from the contention unit, the symbol position of starting to send the contention signal of the current UE includes: randomly selecting, according to the priority of the symbol position, the symbol position of the contention signal starting to send the current UE from the contention unit.

Optionally, the length of the window of the listening window corresponds to a length of time T that determines that the resource is idle. In this way, it can be avoided that other UEs mistakenly judge that the contention unit is an idle contention unit due to the length of the listening window being greater than the idle threshold length T. In the implementation, when the UE sends its own contention signal on the selected contention unit, at least some or all of the following steps may be performed, where the present invention does not limit the order of execution of the steps:

1.1. The UE randomly selects or determines the symbol position at which the contention signal starts to be transmitted according to information such as the priority of the UE selecting the contention unit.

1.2. The UE monitors and records the transmission of the contention signal on the contention area, and at least includes the contention unit selected by the UE for transmitting its own competition signal.

1.3. The symbol between the starting position of the competing unit and the starting position of the transmitting competing signal is also the listening window. If it is monitored in the listening window that the selected contention unit already has a contention signal sent by another UE (at least on one symbol, such a contention signal), it indicates that the UE fails to compete on the current contention unit, and at this time, the UE will Abandoning the competition unit will not continue to send the competition signal on the competition unit. Wherein, the monitoring of the competition signal means that the sequence of the competition signal can be correctly parsed on the current symbol of a certain competition unit, or the contention energy that can be detected is greater than the threshold value Th. Among them, the Th value can be based on the minimum RSRP (Reference Signal Received Power) that meets the communication requirements. The received power value is determined to be related to the contention power of the competing signal P and the coverage of the communication request R. If the contention signal transmission power P is constant, the communication request range R is larger (communication requirements include: the resources of the UE are orthogonal in the time domain in the R range, or the signal to interference and noise ratio (SINR) in the R range satisfies the reception process Required), the smaller the Th value. On the other hand, if the signal sequence of the contention signal is not correctly parsed on the current symbol, or the detected content of the competition signal is less than the threshold value Th, it means that there is no contention signal transmission on the current symbol, that is, idle.

1.4. Before it starts to send the symbol of the contention signal, if there is no competing signal sent by other UEs on the selected contention unit (ie, it is always idle), it means that it can participate in the competition, then follow the competition signal of 1.5 steps below. The sending rule begins to send a contention signal.

1.5. Start transmitting a competition signal. Specifically, the competition signal is sent according to the rules of the transmission window and the listening window. The competition signal transmission rule refers to sending a competition signal for a period of time in the transmission window, and then monitoring whether the current competition unit exists in the monitor window. The contention signal sent by other UEs is shown in Figure 4. The transmission window and the listening window length of each UE may be different, and each UE may randomly select the duration of the transmission window and the monitoring window, or randomly select the transmission pattern according to the pattern. The pattern mode refers to a different pattern set of predefined transmission window and monitor window length, and the UE selects one of the patterns to transmit the contention signal. The duration of the listening window selected by the UE should be less than the threshold T for determining the idle duration of the resource.

1.6. During the sending process, if the contention signal of other UEs is monitored in the listening window, it indicates that the UE fails to compete on the current contention unit, and gives up continuing to send the contention signal in the current contention unit; if no competition is detected in the listening window The signal continues to send its own competitive signal according to the rules until the end of the competition unit.

1.7. A UE that fails to compete on a certain competition unit may choose to resend the contention signal on other competing units that are idle, and the interception process is 1.1 to 1.6 as described above. An idle contention unit is a contention unit that does not hear a contention signal during T time.

1.8. If the contention of the other UEs on the selected contention unit is not monitored until the end of the monitoring unit, the UE is successfully contending on the contention unit, and the data unit corresponding to the listening unit may be sent and sent. User data message.

Through the above steps, the message sending methods in such scenarios, such as resource competition and selection schemes, are optimized to meet communication requirements.

The present invention also provides a user equipment for D2D communication or vehicle networking communication, wherein the device comprises: a determining component, configured to select a contention unit of the UE device, select a starting position of the competition signal, determine whether the competition is successful, and compete The selection of the data unit after the success, and the competition priority determination of the UE; the monitoring component: configured to monitor the transmission of the contention signal on each of the contention units in the competition window; the transmitting component: configured to send the competition signal in the transmission window of the contention unit And sending data information on the data unit.

Embodiments of the present invention provide an information sending method and apparatus, which are mainly applied to a device-to-device direct communication system. A typical direct communication system such as D2D communication or vehicle networking communication, the main feature of the resource allocation mode is that there is no central node. Or the central node does not participate in the resource allocation control of the UE. Resource competition selection method provided in the present invention, through UE Participating in the competition in the competition area, the success of the competition means that the data unit corresponding to the competition unit can be used, thereby realizing the reasonable distribution of the communication resources. This can solve the resource conflict problem and the half-duplex problem of the UE in a certain range, and can ensure the priority transmission of the high-priority user equipment and the emergency message.

The technical solutions of the present invention are further elaborated below in conjunction with the accompanying drawings and specific embodiments:

Example 1

This embodiment presents a preferred resource contention selection scheme that does not distinguish between UE priority and message importance level. The communication resources may be divided into a competition area and a data resource pool, wherein the competition area, the competition unit, the data resource pool, and the data unit are respectively shown in FIG. 2 . The contention area includes one or more contention units, and the UE transmits its own contention signal by using the contention area. The contention unit corresponds to one or more data units, wherein the mapping relationship between the contention unit and the data unit may be pre-configured by the UE device or dynamically configured by signaling of the central node. If the UE competes successfully on a contention unit, it indicates that it can send a data message on all data units corresponding to the contention unit. The data resource pool can be further divided into sets of data units. A data unit represents a set of radio resources combined with a combination of time domain and frequency domain. Resources between two data units do not overlap. In this example, the time domain basic module of the contention unit is a symbol in the LTE system, and may also be other duration units.

The resource competition selection process of the UE is as shown in FIG. 5:

Step S502: The UE randomly selects a contention unit in the contention area for the transmission of the contention signal and the contention selection of the corresponding data unit.

Step S504: Determine a starting symbol position of the contention signal sent by the contention unit, which may be randomly selected or selected according to the UE attribute, and the starting position is not greater than the ending position of the contention unit.

Step S506: Determine whether the current symbol is the end position of the competition unit.

Step S508: If the current symbol is the end position of the contention unit, it indicates that the previous contention signal has been successfully transmitted, and the UE competes successfully on the current contention unit, and the UE may send the data message by using the data unit corresponding to the contention unit.

Step S510: The current symbol is not the contention end position of the contention unit, and then continues to determine whether the current symbol is in the transmission window of the contention signal.

Step S512: The current symbol is within the contention signal transmission window, and then the contention signal is transmitted on the symbol of the current contention unit. And at the next time, it jumps to step S506.

Step S514: The current symbol is not in the competition signal transmission window, but is in the monitoring window. At this time, the UE monitors and records the signal transmission situation of the contention area, and determines whether there is a contention signal sent by another UE on the contention unit selected by the UE. If the listening window does not listen to the contention signal sent by other UEs on the selected contention unit, the next time jumps to step S506.

Step S516: The current symbol monitors that there is a contention signal sent by another UE on the selected contention unit, indicating that the competition on the current contention unit fails, and the contention signal transmission on the current contention unit is abandoned.

Step S518: Determine whether there is an idle contention unit in the contention area (the contention signal sent by other UEs has not been monitored on the contention unit).

Step S520: If no free competition unit is found, the competition fails.

Step S522: If there is an idle contention unit, then one contention unit is randomly selected, and the process jumps to step S504 at the next moment.

After the resource competition selection process, when the contention area ends, the UE does not listen to other UEs to send a contention signal on the selected contention unit, indicating that the contention is successful, that is, the UE can use the data corresponding to the selected contention unit. The data message is sent on the unit; otherwise, the contention fails, and the UE cannot send a message during the current contention period (including the contention area and the corresponding data resource pool).

The above-mentioned resource competition selection results can avoid resource conflicts as much as possible, reduce interference between UEs, and improve communication service quality.

Example 2

Embodiments of the present invention provide a preferred resource contention selection scheme that prioritizes UE priorities and/or importance levels of transmitted messages. The division of the competition area, the competition unit, the data resource pool, and the data unit is as shown in FIG. 2 . The resource contention selection process of the UE is basically the same as that of Embodiment 1, except that the UE priority or the message importance level is distinguished in step S504. That is, in this embodiment, step S504 may further include:

S5042: The UE is classified into N competition levels according to a priority attribute of the UE or according to a service importance level transmitted by the UE. The competition levels 1 to N sequentially indicate that the level of participation in the competition is gradually reduced. The higher the UE's level of competition, the more preferential it is to compete for data communication resources. The division rule of the UE priority, the service importance level, and the competition level is determined by the upper layer of the protocol, or pre-configured by the UE device, or dynamically configured by the central node.

S5044: The competition level corresponds to the first N symbols of the contention unit in FIG. The higher the symbol in the competition unit, the higher the competition level. The UE selects the start symbol position for transmitting the contention signal according to its own competition level.

Other steps are the same as those in Embodiment 1 and need not be described here.

After the above-mentioned resource competition selection process, the higher the competition level on the same competition unit, the easier it is to compete successfully. In this way, the transmission of the high-priority UE and the emergency service can be preferentially ensured, and the communication service quality of the high-priority UE and the emergency service is ensured while avoiding the resource conflict problem, thereby reducing the transmission delay of the emergency message.

Example 3

The resource competition selection scheme provided in this embodiment can further solve the half-duplex problem of inter-mail messages between UEs within a certain communication distance range, and is particularly helpful for the transmission of emergency messages in the vehicle network communication. By solving the problem of mutual hearing between vehicles caused by half-duplex, the reliability of communication between vehicles closer to each other can be further ensured, thereby avoiding the occurrence of road traffic accidents.

Generally, in D2D communication and vehicle networking communication, the user equipment usually has only one transceiver in one working frequency band, that is, in one working frequency band, when the message is sent, the message cannot be received, and the message cannot be sent at the same time. Therefore, when two devices simultaneously send messages on one frequency band, the two cannot communicate with each other, which leads to the half-duplex problem. Especially in the case of the Internet of Vehicles, when there is an emergency in the near-vehicle, the emergency warning of mutual warning is related to the safety of the vehicle and the person. Therefore, it is urgent to avoid the above-mentioned half-duplex problem.

In this embodiment, an example of the defined contention unit and data unit is shown in FIG. 6. The data unit is orthogonal in the time domain, that is, different data units are staggered in the time domain, and there is no overlap, thereby ensuring the UE. Half-duplex inter-listening problems between. A one-to-one or one-to-many correspondence between the contention unit and the data unit, that is, if the UE successfully competes on a contention unit, it indicates that the UE can send a message on the data unit corresponding to the contention unit, thereby avoiding The problem of resource conflicts. In addition, the resource location of the UE in the frequency domain can be selected as needed. The correspondence between the contention unit and the data unit is pre-configured by the UE device or dynamically configured by the central node. The resource competition selection process is as in Embodiment 1 or Embodiment 2, and is not described here.

Through the above resource competition selection process, not only the resource conflict problem between UEs can be solved, but also the half-duplex problem can be solved. Especially for the emergency message transmission in the Internet of Vehicles scenario, the communication service quality of the vehicle and the vehicle within a relatively close range is effectively improved, thereby avoiding the occurrence of traffic accidents and ensuring the safety of the vehicle and the human body.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, The optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods of various embodiments of the present invention.

In the embodiment, an information transmitting apparatus is further provided, which is used to implement the above-mentioned embodiments and preferred embodiments, and the detailed description thereof has been omitted. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

FIG. 7 is a schematic diagram of an information sending apparatus according to an embodiment of the present invention. As shown in FIG. 7, the apparatus includes: a first sending unit 702, configured to use a contention unit to send a contention signal of a current user equipment UE, where a contention signal is used. For the current UE to contend for the data unit for transmitting user data information; the intercepting unit 704 is configured to monitor whether there is a competition signal of other UEs on the contention unit; and the second sending unit 706 is configured to not exist when the monitoring result is a contention unit. In the case of the contention signals of other UEs, the user data information that the current UE needs to transmit is transmitted using the data unit obtained by the competition of the competition signal of the current UE.

The method for competing for selecting communication resources by the UE in the embodiment of the present invention solves the problem that the UEs use the same resource at the same time due to the autonomous random selection of communication resources in the related art, thereby causing half-duplex problems and resource conflicts in the communication. Furthermore, the effect of achieving UE competition for selecting communication resources to avoid half-duplex problems and resource conflicts is achieved. fruit.

Optionally, the foregoing apparatus further includes: a configuration unit, configured to: before using the contention unit to send the contention signal of the current user equipment UE, configuring a data resource pool and a contention area of the communication resource, where the data resource pool includes one or more data units, The competition area includes one or more competition units, and one competition unit corresponds to one or more data units.

Optionally, the foregoing apparatus further includes: a selecting unit, configured to: when the monitoring result is a contention signal of other UEs on the contention unit, select another contention unit that is monitored as idle from the contention area; the third sending unit And set to continue to transmit the contention signal of the current UE by using the contention unit until the current UE competes for the data unit for transmitting the user data information.

In the embodiment of the present invention, when the UE fails to compete on one contention unit, the UE is transferred to another contention unit that is listening to idle to continue to compete until the corresponding data unit location is competed to ensure that the UE finally implements normal communication.

Optionally, the selection unit is further arranged to select another contention unit from the contention area according to the attribute information for describing the current attribute of the contention unit.

The attribute information used to describe the contention unit is used to describe the priority information of the UE using the contention unit, the priority information of the service type of the UE, and the like. By selecting the symbol position in the contention unit according to the attribute information for describing the contention unit, thereby ensuring the power of the high priority UE and/or the emergency type message to preferentially select the communication resource, and by selecting the time domain orthogonal communication Resources to avoid half-duplex problems.

Optionally, the first sending unit includes: a selecting module, configured to select, from the contention unit, a symbol position that starts to send a contention signal of the current UE, where, optionally, each contention unit is divided into 14 time zones. The basic module is divided into 12 subcarrier modules in the frequency domain, and each basic module corresponds to one symbol position; the sending module is set to be a self-selected symbol position, and continuously transmits the current UE's contention signal within a preset duration, wherein The preset duration from the selected symbol position forms a transmission window for transmitting the contention signal on the contention unit, and each of the contention units may include one or more transmission windows, between any two adjacent transmission windows. It is a listening window for listening to the competing signals of other UEs. The current UE may send its own contention signal in the transmission window, and listen to the competition signals of other UEs in the listening window.

Optionally, the selection module is further configured to select, from the contention unit, the symbol position of the contention signal of the current UE starting to be transmitted randomly or according to the priority of the symbol position.

It should be noted that each of the above modules may be implemented by software or hardware. For the latter, the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are located in multiple In the processor.

Embodiments of the present invention also provide a storage medium. Optionally, in the embodiment, the foregoing storage medium may be configured to store program code for performing the following steps:

S10. The contention unit sends a contention signal of the current user equipment UE by using a contention unit, where the contention signal is used to compete for a data unit for transmitting user data information for the current UE.

S12. Monitor whether there is a competition signal of other UEs on the contention unit.

S14. If the monitoring result is that there is no contention signal of other UEs on the contention unit, use the data unit obtained by the contention of the current UE's contention signal to send the user data information that the current UE needs to send.

Optionally, the storage medium is further configured to store program code for performing other preferred embodiments in the above embodiments, and details are not described herein.

Optionally, in this embodiment, the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory. A variety of media that can store program code, such as a disc or a disc.

Optionally, in this embodiment, the processor executes according to the stored program code in the storage medium:

Optionally, in this embodiment, the processor performs corresponding steps according to the program code in the storage medium that has stored the other preferred embodiments in the foregoing embodiments, and details are not described herein again.

For example, the specific examples in this embodiment may refer to the examples described in the foregoing embodiments and the optional embodiments, and details are not described herein again.

It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Industrial applicability

As described above, a patch software upgrade method and system provided by an embodiment of the present invention have the following beneficial effects: a UE competing for selecting a communication resource, and using a contention unit to transmit a contention signal of a current user equipment UE, where a contention signal is used. Competing for the current UE to use the data unit for transmitting user data information; monitoring whether there is a competition signal of other UEs on the contention unit; if the monitoring result is that there is no competition signal of other UEs on the contention unit, using the competition by the current UE The data unit obtained by the signal competition sends the user data information that the current UE needs to send, thereby implementing the UE competing to select the communication resource to avoid the half-duplex problem and the resource conflict problem.

Claims

A method for transmitting information, including:

Using a contention unit to send a contention signal of the current user equipment UE, wherein the contention signal is used to compete for the current UE for a data unit for transmitting user data information;

Monitoring whether there is a competition signal of other UEs on the contention unit;

If the monitoring result is that there is no contention signal of the other UE on the contention unit, the user data information that the current UE needs to send is sent by using a data unit that is obtained by the contention of the current UE.
The method according to claim 1, wherein before the contention unit transmits the contention signal of the current user equipment UE, the method further comprises:

Configuring a data resource pool and a contention area of the communication resource, where the data resource pool includes one or more of the data units, the contention area includes one or more of the contention units, and one of the contention units corresponds to one or more The data unit.
The method according to claim 2, wherein one of said contention units is a time-frequency resource block and one of said data units is a time-frequency resource block.
The method of claim 2, further comprising:

If the monitoring result is that there is a contention signal of the other UE on the contention unit, another contention unit that is monitored as idle is selected from the contention area, wherein the idle contention unit is in a period of time Can not hear the competition signal;

The contention unit continues to transmit the contention signal of the current UE until the current UE competes for the data unit for transmitting the user data information.
The method of claim 4, wherein selecting another contention unit that is monitored as idle from the contention area comprises:

Another contention unit that listens to idle is selected from the contention area according to attribute information for describing a current attribute of the contention unit.
The method according to claim 2, wherein each of the contention units is divided into a plurality of basic modules in a time domain, and is divided into one or a plurality of subcarrier modules in a frequency domain, wherein the plurality of basic modules There are multiple configurations for the duration and/or starting position of each of the basic modules in the medium.
The method according to claim 2, wherein the using the contention unit to transmit the contention signal of the current user equipment UE comprises:

Selecting, from the contention unit, a symbol position of starting to transmit a contention signal of the current UE;

Starting from the selected symbol position, continuously transmitting the contention signal of the current UE within a preset duration, wherein the preset duration from the selected symbol position forms a use on the contention unit In the sending window of the contention signal, each of the contention units may include one or more of the sending windows, and between any two adjacent transmitting windows, a contention signal for monitoring the other UEs Monitor window.
The method according to claim 7, wherein the symbol position selected from the contention unit to start transmitting the contention signal of the current UE comprises:

The symbol position of the contention signal of the current UE starting to be transmitted is selected from the contention units randomly or according to the priority of the symbol position.
The method according to claim 7, wherein the length of the window of the listening window corresponds to a duration that is less than a duration threshold for determining that the resource is idle.
An information sending device includes:

a first sending unit, configured to send, by using a contention unit, a contention signal of a current user equipment UE, where the contention signal is used to compete for a data unit for transmitting user data information for the current UE;

a monitoring unit, configured to monitor whether there is a competition signal of other UEs on the contention unit;

a second sending unit, configured to send, when the monitoring result is that the contention unit of the other UE does not exist on the contention unit, send the current UE to be sent by using a data unit that is obtained by the contention of the current UE. User data information.
The device of claim 10, wherein the device further comprises:

a configuration unit, configured to: before using the contention unit to send a contention signal of the current user equipment UE, configuring a data resource pool and a contention area of the communication resource, where the data resource pool includes one or more of the data units, where the contention area is One or more of the contention units are included, and one of the contention units corresponds to one or more of the data units.
The device according to claim 11, further comprising:

a selection unit, configured to select, from the contention region, another contention unit that is listening to idle, if the monitoring result is a contention signal of the other UEs on the contention unit, where the idle competition is The competition signal is not monitored on the unit for a period of time;

And a third sending unit, configured to continue to use the contention unit to continue to send the contention signal of the current UE until the current UE competes for a data unit for transmitting user data information.
The apparatus of claim 12, wherein the selection unit is further configured to select another contention unit that is listening to idle from the contention area in accordance with attribute information for describing a current attribute of the contention unit.
The apparatus of claim 11, wherein the first transmitting unit comprises:

a selection module, configured to select, from the contention unit, a symbol position to start transmitting a contention signal of the current UE; and a sending module, configured to start with the selected symbol position, and continuously send the current duration within a preset duration a contention signal of the UE, wherein the preset duration from the selected symbol position forms a transmission window for transmitting a contention signal on the contention unit, and each of the contention units may include one or A plurality of the transmission windows, between any two adjacent transmission windows, are a monitoring window for monitoring the contention signals of the other UEs.
The apparatus of claim 14, wherein the selection module is further configured to select a symbol position from the contention unit to start transmitting a contention signal of the current UE, either randomly or according to a priority of a symbol position.