WO2006066487A1

WO2006066487A1 - Method and system for implementing information transmission

Info

Publication number: WO2006066487A1
Application number: PCT/CN2005/002140
Authority: WO
Inventors: Yongge Su
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2004-12-21
Filing date: 2005-12-09
Publication date: 2006-06-29
Also published as: CN100361539C; CN1798354A

Abstract

A method for implementing information transmission includes Calling terminal sends resort signal to request the help of wireless terminal in the system so as to implement information transmission between said terminal and called terminal After wireless terminal in the system received resort signal and confirmed that it can offer to help with information transmission between calling terminal and called terminal help is offered to the information transmission between said calling terminal and said called terminal by calling terminal request; After wireless terminal determined that calling terminal would accept its help it can assign time slots to establish communication link between said calling terminal and said called terminal calling terminal and called terminal can make information transmission by using assigned time slots. A system is provided to implement information transmission. Present invention can increase coverage areas of network signals in networking mode with the center of base station, and extend connection distance between the wireless terminals in centerless peer-to-peer networking mode, and realize information transmission in badness signal coverage region or between the terminals which are far away from each other.

Description

Method and system for realizing information transmission

TECHNICAL FIELD The present invention relates to the field of wireless communication technologies, and in particular, to a method for implementing information transmission and a system for implementing information transmission. Background of the invention

When information is transmitted between wireless terminals, the transmitted information may include voice information or data information. In the prior art, whether the transmitted information is voice information or data information, a communication link needs to be established between the wireless terminals to perform bidirectional data transmission.

When transmitting voice information, not only the voice information of the party is sent to the other party, but also the voice information of the other party is received, so that the two-way data transmission needs to be performed between the wireless terminals. When data information is transmitted, due to the existence of interference and fading, data information generally generates errors during transmission. Currently, the main way to solve the error is to use redundancy, checksum, and retransmission. For example, the data information is divided into several segments, each segment is sent multiple times in different frames, and the correct data is synthesized to synthesize complete information. If the verification is incorrect, the other party is notified to resend the data to ensure the data information. Transfer correctly. In order to ensure the correctness and reliability of data transmission, retransmission is indispensable for data information transmission. Therefore, when data information is transmitted, two-way data transmission is also required between wireless terminals.

In the process of establishing a communication link, wireless terminals need to pass random access channels

( RACH ) to send and receive signals. RACH is a common channel in a wireless communication system. A base station and all wireless terminals receive RACH signals in a full cell, and a base station and a wireless terminal or all wireless terminals communicate with each other through RACH.

Due to the different networking modes between wireless terminals, communication links are established between wireless terminals. The method is also different. In the existing wireless communication network system, there are two main networking modes between wireless terminals: one is a base station-centric networking mode, and the other is a non-central peering networking mode.

As shown in FIG. 1, FIG. 1 is a schematic diagram of a networking manner in which a base station is centered between wireless terminals. In this networking mode, the wireless terminal is located in the network coverage of the base station. To establish a communication link between the wireless terminals and realize information transmission between the wireless terminals, the wireless terminal must first communicate with the base station before passing the network. The base station establishes a communication link with other wireless terminals in the network.

As shown in FIG. 2, FIG. 2 is a schematic diagram of a peerless peering network mode between wireless terminals. In this networking mode, wireless terminals are directly interconnected in a peer-to-peer manner by a commonly supported wireless communication protocol to establish a communication link between the wireless terminals.

In the base station-centric networking mode, in some areas where users are relatively dispersed and traffic is small, in order to successfully establish communication links between wireless terminals and realize information transmission between wireless terminals, it is often necessary to improve the network. Coverage. In order to improve the coverage of the network, more base stations or wireless access points need to be laid, which will greatly increase the construction cost of the communication system, waste a lot of network resources, and is uneconomical in areas where users are dispersed and traffic is small.

In the non-central peer-to-peer networking mode, since the actual distance between the wireless terminals is critical to the success of the communication link establishment, in order to successfully establish a communication link between the wireless terminals, the wireless terminals are implemented. For information transmission, it is often necessary to reduce the connection distance between wireless terminals to ensure effective interconnection between wireless terminals. However, reducing the connection distance between wireless terminals limits the range of use of the wireless terminal. In order to increase the connection distance between wireless terminals and expand the range of use of wireless terminals, in actual design, it is often necessary to design excess transmission power for wireless terminals or increase the modulation bandwidth of wireless terminals to improve the transmission and reception capabilities of wireless terminals. Ensuring effective interconnection within the specified working distance, which will inevitably increase the production cost of the wireless terminal itself and waste a lot of network resources. Summary of the invention

In view of the above, it is a primary object of the present invention to provide a method and system for implementing information transmission that enables information transmission between wireless network signals in terminals that are poorly covered or in remote locations.

In order to achieve the first aspect of the above object, the present invention provides a method for implementing information transmission, the method comprising at least the following steps:

A. The calling terminal sends a help signal, requesting other wireless terminals in the system to assist the terminal and the called terminal to transmit information;

B. After receiving the help signal and confirming that it can provide information for the transmission between the calling terminal and the called terminal, the wireless terminal in the system requests the calling terminal to request information transmission between the calling terminal and the called terminal. Help

C. After the calling terminal's wireless terminal determines that the calling terminal accepts its own help, it allocates resources for establishing a communication link between the calling terminal and the called terminal, and the calling terminal and the called terminal pass the allocated resources. Transfer information.

The information transmitted between the calling terminal and the called terminal is voice information or data information. When the calling terminal is a base station, the called terminal is a wireless terminal; when the calling terminal is a wireless terminal, the called terminal is a base station or a wireless terminal.

The requesting signal sent by the calling terminal in step A may include:

The calling terminal continuously sends out a help signal at intervals through a common random access channel in the network system.

The step C may further include:

After receiving the call, the calling terminal stops issuing the help signal and sends a signal to the wireless terminal to receive its help.

Preferably, the confirmation that the confirmation in step B can provide information transmission between the calling terminal and the called terminal includes: The wireless terminal separately checks the signal quality of the calling terminal and the called terminal. If the signal quality of the calling terminal and the called terminal can meet the communication shield requirement, the wireless terminal calls the calling party through a common random access channel in the network system. The terminal provides assistance for information transmission between the calling terminal and the called terminal.

Preferably, the resource is a time slot;

Then, the wireless terminal in step C allocates a time slot for establishing a communication link between the calling terminal and the called terminal, including:

The wireless terminal allocates at least 4 time slots for information transmission between the calling terminal and the called terminal, the first time slot is used for receiving the transmitting signal of the calling terminal, and the second time slot is for receiving the transmitting signal of the calling terminal. Forwarded to the called terminal, the third time slot is used to receive the reply signal of the called terminal, and the fourth time slot is used to forward the received reply signal from the called terminal to the calling terminal.

When the information is data information, the transmitting signal is data information sent by the calling terminal to the called terminal, and the reply signal is control information returned by the called terminal to the calling terminal.

Preferably, the step C further includes:

In the process of information transmission, the wireless terminal separately monitors the signal quality between itself and the calling terminal and the called terminal. If the signal quality is reduced to meet the communication quality requirement, the wireless terminal is contacted through the random access channel. It is replaced by other wireless terminals that can simultaneously receive the signal of the calling and called terminals and whose signal quality can meet the communication quality requirements, and provide assistance for the information transmission of the called terminal.

Preferably, the method further comprises after step C:

The calling terminal or the called terminal notifies the wireless terminal to release the resources allocated by the communication link between the calling terminal and the called terminal.

It can be seen from the above solution that the method for implementing information transmission provided by the present invention is By utilizing the idle resources of the wireless terminal that are not related to the current communication in the existing network resources, the wireless communication is performed, the communication link between the terminals requiring communication is successfully established, and the information transmission between the terminals is assisted. By using the invention, in the time division duplex system and the area where the user is relatively dispersed, the traffic is small, and the information volume is low, the idle resources of the wireless terminal in the existing communication network can be fully utilized, and the base station-centered networking mode is improved. The coverage of the network signal increases the connection distance between the wireless terminals in the centerless peer-to-peer networking mode, reduces the construction cost of the communication system and the production cost of the wireless terminal itself, and realizes the wireless network signal coverage area. Information transfer between terminals within or far apart.

In order to achieve the second aspect of the above object, the present invention provides a system for implementing information transmission, the system package ^":

a calling terminal, configured to initiate a call, send a help signal to the wireless terminal when the response of the called terminal cannot be received, and return an acceptance help signal to the wireless terminal according to the received call from the wireless terminal;

a wireless terminal, configured to receive a help signal from the calling terminal, and call the calling terminal if the signals of the calling terminal and the called terminal satisfy the communication quality, and establish the receiving help signal after receiving the calling terminal The communication link between the calling and called terminals allocates resources, and the information is transmitted to the called terminal on the allocated resources;

The called terminal is configured to perform information transmission with the calling party on the resource allocated by the wireless terminal to the called terminal.

Preferably, the wireless terminal is a first wireless terminal, the system further comprising: a second wireless terminal;

The first wireless terminal is further configured to: when the signal of the calling terminal and/or the called terminal is reduced, and fail to satisfy the communication quality, send a request to the second wireless terminal to provide communication for the primary called party to communicate with the second wireless terminal. Transmitting, and after receiving the acknowledgement signal of the incoming second wireless terminal, releasing the resource allocated to the communication link between the primary and the called terminal; The second wireless terminal is configured to allocate resources for establishing a communication link between the calling and called terminals after receiving the request signal of the first wireless terminal, and serve as the called terminal on the allocated resource. Transfer information.

The first wireless terminal is further configured to send a stop help signal to the calling terminal when the signal of the calling terminal and/or the called terminal is reduced, and it is difficult to satisfy the communication quality, and release the call between the calling terminal and the called terminal. Resources allocated by the communication link;

The calling terminal is further configured to send a help signal after receiving the stop help signal from the first wireless terminal, and after receiving the call for providing assistance from the second wireless terminal, to the second wireless The terminal returns to receive the help signal;

The second wireless terminal is configured to receive a help signal from the calling terminal, and call the calling terminal if the signals of the calling terminal and the called terminal satisfy the communication quality, and receive the receiving help signal of the calling terminal. Then, resources are allocated for establishing a communication link between the calling and called terminals, and information is transmitted to the called terminal on the allocated resources.

The calling terminal may be a third wireless terminal, and the called terminal is a fourth wireless terminal or a base station.

The calling terminal may also be a base station, and the called terminal is a third wireless terminal.

.

It can be seen from the foregoing solution that the system for implementing information transmission provided by the present invention successfully establishes a terminal requiring communication by utilizing the idle resources of the wireless terminal that is not related to the current communication in the existing network resources to perform wireless communication. The communication link between the terminals assists in the transmission of information between the terminals. By using the invention, in the time division duplex system and the area where the user is relatively dispersed, the traffic is small, and the information volume is low, the idle resources of the wireless terminal in the existing communication network can be fully utilized, and the base station-centered networking mode is improved. Medium network signal coverage, increase The connection distance between the wireless terminals in the peerless peer-to-peer networking mode reduces the construction cost of the communication system and the production cost of the wireless terminal itself, and realizes between the wireless network signal coverage areas or the distant terminals. Information transfer. BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of a base station-centric networking manner between wireless terminals;

Figure 2 is a schematic diagram of a peerless peering network between wireless terminals

FIG. 3 is a schematic diagram of a method for implementing information transmission by a calling terminal and a called terminal by using a wireless terminal; FIG. 4 is a flowchart of a method for implementing an overall technical solution for information transmission according to the present invention; FIG. 5 is a schematic diagram of implementing information transmission according to a preferred embodiment of the present invention. Method flow chart. Mode for carrying out the invention

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings.

The main idea of the present invention is: by utilizing the idle resources of the wireless terminal unrelated to the current communication in the existing network resources, enabling the wireless relay to successfully establish a communication link between the terminals requiring communication, and assisting the information between the terminals. transmission.

As shown in FIG. 3, FIG. 3 is a schematic diagram of information transmission between a calling terminal and a called terminal by using a wireless terminal. In Figure 3, the calling terminal requests to establish a communication link with the called terminal for information transmission. Since one of the calling terminal and the called terminal is located in an area where the wireless network signal is poorly covered, or because the distance between the calling terminal and the called terminal is too far, the effective connection distance between the two is exceeded, the calling party A communication link cannot be established directly between the terminal and the called terminal. The wireless terminal that is not involved in the communication between the calling terminal and the called terminal, is located in a better network coverage area, or is located within the effective connection distance between the calling terminal and the called terminal, and has an idle time slot. Establish communication with the calling terminal and the called terminal respectively Link. The present invention utilizes a wireless terminal that enables a wireless relay to be established between a calling terminal and a called terminal to establish a communication link, thereby establishing a communication link between the calling terminal and the called terminal, and realizing the calling terminal and the called party. Information transfer between terminals.

As shown in FIG. 4, FIG. 4 is a flowchart of a method for implementing an overall technical solution for information transmission according to the present invention. The flowchart includes the following steps:

Step 401: The calling terminal sends a help signal, requesting other wireless terminals in the system to assist the terminal and the called terminal to perform information transmission;

Step 402: After receiving the help signal and confirming that it can provide information for the information transmission between the calling terminal and the called terminal, the wireless terminal in the system requests the information transmission between the calling terminal and the called terminal by calling the calling terminal. provide help;

Step 403: After determining that the calling terminal accepts its own help, the wireless terminal allocates a time slot for establishing, a communication link between the calling terminal and the called terminal, and the calling terminal and the called terminal perform information through the allocated time slot. transmission.

Through the above method, information transmission between a wireless network signal covering a bad area or a terminal far apart can be realized. The present invention will be further described in detail below with reference to the accompanying drawings.

In the base station-centric networking mode, when the calling terminal is a wireless terminal and the called terminal is a base station, the wireless terminal acts as a calling party, and requests to establish a communication link with the base station; when the calling terminal is a base station, When the called terminal is a wireless terminal, the base station acts as a calling party and requires establishing a communication link with the wireless terminal. Since the sub-link formed by the communication between the terminal and the base station is a part of the wireless communication link, the base station is also referred to as a terminal in this sub-link.

As shown in FIG. 5, FIG. 5 is a flow chart of a method for implementing information transmission in accordance with a preferred embodiment of the present invention. In this embodiment, the system is a time division duplex system, the calling terminal is a wireless terminal 1 and the called terminal is a base station, and the flowchart includes the following steps:

Step 501: The wireless terminal 1 calls the base station through a common RACH in the communication system, Find a communication link with the base station to transmit information.

Step 502: Because the network coverage of the wireless terminal 1 is not good, or the location of the wireless terminal 1 exceeds the network coverage of the base station, the base station does not respond to the call sent by the wireless terminal 1, and the wireless terminal 1 cannot directly establish communication with the base station. The link, the wireless terminal 1 sends a help signal through the common RACH in the communication system, and requires other wireless terminals in the communication system to assist in the information transmission between the wireless terminal 1 and the base station.

In this step, the wireless terminal may set a certain waiting time in advance. If the response information from the base station is not received within the waiting time, it is determined that the communication link cannot be directly established with the base station; in addition, the wireless terminal may also be in advance. After the set waiting time, the base station is re-called, and after repeating the preset number of times, the response information from the base station is still not received, and it is determined that the communication link cannot be established directly with the base station. For example, the wireless terminal can set the time for waiting for a response after the call is 2 seconds. After the call is not answered again, if the response information from the base station is still not received 3 times, it is determined that the communication link cannot be established directly with the base station.

The help signal in this step includes the identification code of the wireless terminal that initiated the help and the agreed help sign, wherein the identification code is similar to the phone number and can be used to distinguish the terminal, and the help sign can be a pre-agreed specific field, or a specific field. Specific values, the specific field and field values used can apply reserved fields in existing messages, or retain values, depending on the actual communication protocol. Of course, the help signal in this step can also be implemented by adding a message to the communication protocol. In addition, in this step, before the wireless terminal 1 accepts assistance from other wireless terminals, it may be continuously transmitted at intervals until the wireless terminal 1 accepts assistance from other wireless terminals.

Step 503: After receiving the help signal of the wireless terminal 1 through the common RACH in the communication system, the wireless terminal 2 checks the signal quality of the wireless terminal 1. If the signal quality is good and can meet the communication quality requirement, step 504 is performed; otherwise, the execution is performed. Step 505. In this step, the wireless terminal 2 checks the signal quality of the wireless terminal 1 by checking the power level of the received help signal. For example, it can be determined whether the power level of the received help signal is higher than a preset minimum threshold level capable of normal communication, and if the threshold level is higher, the signal quality is good, and the communication quality requirement can be met. .

Step 504: The wireless terminal 2 calls the base station and receives the broadcast signal of the base station, and checks the signal quality of the base station. If the signal quality is good and can meet the communication quality requirement, step 506 is performed; otherwise, step 507 is performed.

In this step, similar to step 503, the wireless terminal 2 can determine whether the signal quality is good by checking whether the received power level of the pilot channel from the base station exceeds a preset threshold level, that is, whether Meet communication quality requirements.

Step 505: The wireless terminal 2 gives up the help and ends the process.

Step 506: The wireless terminal 2 requests the wireless terminal 1 through the RACH to provide assistance for information transmission between the wireless terminal 1 and the base station.

Here, the call initiated by the wireless terminal to the wireless terminal 1 through the RACH may include the terminal, that is, the identification code of the wireless terminal 2, and the agreed reception help flag field or a specific field value used as the reception help flag. The receiving help flag may be a specific value of a predetermined specific field, and the specific field used may apply a reserved field in an existing call message according to an actual communication protocol, or a reserved value. Of course, in this step, the wireless terminal 2 can also return information for providing assistance to the wireless terminal 1 through a new message in the communication protocol. In addition, the call information may further include the received signal quality of the wireless terminal 1 and the base station signal quality parameter, so that the wireless terminal 1 can select among the plurality of wireless terminals providing assistance according to the quality parameters. In this step, after the wireless terminal 2 calls the wireless terminal 1, the communication resources are reserved for the wireless terminal 1 in the wireless terminal 2.

Step 507: The wireless terminal 2 gives up the help and ends the process.

Step 508: The wireless terminal 1 accepts the help of the wireless terminal 2, 'stops issuing the help signal, And the wireless terminal 2 is sent a signal to receive its help.

In this step, it is possible that the wireless terminal 2 is the first wireless terminal that provides assistance to the wireless terminal 1, and may be a plurality of wireless terminals that the wireless terminal 1 receives in a preset time, according to the These provide information about the signal quality of the wireless terminal 1 received by the wireless terminal and the signal quality of the above-mentioned base station, and after comprehensive consideration, the wireless terminal selected from which the best communication quality service can be provided. The signal transmitted by the wireless terminal 1 to the wireless terminal 2 to receive its help includes the identification code of the wireless terminal 1 and a specific field or field value for receiving the help flag.

Step 509: After receiving the signal sent by the wireless terminal 1 to receive its help, the wireless terminal 2 allocates at least 4 time slots for establishing a communication link between the wireless terminal 1 and the base station, and the first time slot is used for receiving the wireless terminal 1 The second time slot is used to forward the transmission signal received from the wireless terminal 1 to the base station, the third time slot is used to receive the reply signal of the base station, and the fourth time slot is used to forward the reply signal received from the base station. Give the wireless terminal 1.

When information transmission needs to be continuously performed between the wireless terminal 1 and the base station, the wireless terminal 2 will continue to allocate time slots for information transmission between the wireless terminal 1 and the base station until the information transmission is completed, or the wireless terminal 2 is at the wireless terminal 1 and/or Or the base station's signal is degraded and actively abandoned or replaced by another wireless terminal 2 to provide a relay transmission service between the wireless terminal 1 and the base station.

In the process of information transmission between the wireless terminal 1 and the base station, the wireless terminal 2 is not only responsible for forwarding information transmitted between the wireless terminal 1 and the base station, but also further being responsible for monitoring the signal quality between the wireless terminal 1 and the base station, respectively. If the signal quality is worse than the preset threshold level, the RACH can be used to contact other wireless terminals to send a request to other wireless terminals to provide a signal for communication with the primary called party. The main callee information is included, and the wireless terminal that receives the request signal contacts the calling and called terminal according to the calling and called information, and confirms that the signal of the calling and called terminals is good, and can satisfy the In the case of the quality requirement, the main called terminal allocates resources to transmit information between the calling party and the called party, and sends an acknowledgment signal to the wireless terminal 2, assuming that the terminal transmitting the acknowledgment signal is the wireless terminal 3, and the wireless terminal 2 is Upon receiving the acknowledgment signal from the wireless terminal 3, the resource allocated to the called terminal is released. In addition, if the wireless terminal 2 detects that the signal quality between the wireless terminal 1 or the base station deteriorates, or both of them deteriorate, the wireless terminal 1 can also be notified, and then the wireless terminal 1 re-issues the help signal through the RACH. And one of the other wireless terminals providing assistance is selected as the relay station, and the processing flow after the other wireless terminal receives the help signal is the same as the processing flow after the wireless terminal 2 receives the help signal in the above process, and the wireless terminal is the wireless terminal in the other wireless terminal. 1 Before providing assistance, the link between the wireless terminal 1, the wireless terminal 2, and the base station may not be removed to achieve continuity of communication.

Step 510: After the information transmission is completed, the wireless terminal 1 or the base station notifies the wireless terminal 2 to tear down the communication link between the wireless terminal 1 and the base station.

In the above preferred embodiment, after receiving the help signal of the wireless terminal 1, the wireless terminal 2 first checks the signal quality of the wireless terminal 1, and then checks the signal quality of the base station. In practical applications, the wireless terminal 2 checks that the signal quality of the wireless terminal 1 and the base station is in no order, and can check at the same time, or first check the signal quality of the base station, and then check the signal quality of the wireless terminal 1. Regardless of which method is used for inspection, the essence of the invention is the same as that of the present invention, and the object of the present invention can be achieved.

The information transmitted between the wireless terminal 1 and the base station may be voice information or data information. When the transmitted information is voice information, the transmission signal in step 509 is the voice information sent by the wireless terminal 1 to the base station, and the reply signal is the voice information returned by the base station to the wireless terminal 1; when the transmitted information is the data information, step 509 The transmitted signal is the data information sent by the wireless terminal 1 to the base station, and the reply signal is the control information returned by the base station to the wireless terminal 1, for example, the information that the wireless terminal 1 is required to resend the data information when the data packet is damaged. In addition, when the transmitted information is data information, the wireless terminal 2 can temporarily store the data information, It acts like a short message center in a communication system.

In the base station-centric networking mode, if the calling terminal is a base station and the called terminal is a wireless terminal, when the location of the wireless terminal is not well covered, or the location of the wireless terminal exceeds the network coverage of the base station The method for implementing information transmission between the base station and the wireless terminal is completely consistent with the method in the foregoing embodiment, and details are not described herein again.

In addition, in the peerless peer-to-peer networking mode, both the calling terminal and the called terminal are wireless terminals, and the two can be called each other. When the distance between the calling terminal and the called terminal is too far, the effective connection distance between the two is exceeded, and the communication link between the calling terminal and the called terminal cannot be established directly, The communication link, which realizes the information transmission between the wireless terminals, can also utilize the above method, and is located in the effective connection distance between the calling terminal and the called terminal, which is not originally involved in the communication between the calling terminal and the called terminal. The wireless terminal establishes a communication link with the calling terminal and the called terminal by using idle time slots, and assists the information transmission between the calling terminal and the called terminal. This method is completely consistent with the method in the above embodiment, and will not be described again here.

In the technical solution provided by the present invention, the wireless terminal may be a mobile phone, a portable device, an in-vehicle communication device, a personal digital assistant (PDA), an information appliance, or a personal computer (PC) in a wireless local area network. The wireless terminal for providing assistance does not have to be in an idle state. As long as the wireless terminal has an idle time slot, it can provide assistance for the information transmission of the calling terminal and the called terminal, thereby achieving the object of the invention. In addition, when the wireless terminal in the present invention provides assistance for information transmission between the calling terminal and the called terminal, it needs to occupy resources of multiple time slots, so the present invention is more suitable for the time division duplex system and the user is relatively dispersed. Areas with less traffic and lower information, such as field operations, tunnel communication, some private networks, or information appliances, but are not limited to this.

It can be seen from the above embodiments that the method for implementing information transmission provided by the present invention utilizes idle resources of wireless terminals that are unrelated to current communication in existing network resources. It enables wireless relay, successfully establishes a communication link between terminals requiring communication, and assists in information transmission between terminals. By using the invention, in the time division duplex system and the area where the user is relatively dispersed, the traffic is small, and the information volume is low, the idle resources of the wireless terminal in the existing communication network can be fully utilized, and the base station-centered networking mode is improved. The coverage of the network signal increases the connection distance between the wireless terminals in the centerless peer-to-peer networking mode, reduces the construction cost of the communication system and the production cost of the wireless terminal itself, and realizes the wireless network signal coverage area. Information transfer between terminals within or far apart.

The above described specific embodiments of the present invention are described in detail, and are not intended to limit 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.

Claims

Claim

A method for implementing information transmission, characterized in that the method comprises at least the following steps:

The wireless terminal calling the calling party allocates resources for establishing a communication link between the calling terminal and the called terminal after determining that the calling terminal accepts its own help, and the calling terminal and the called terminal perform the allocated resources. Information transfer.

2. The method according to claim 1, wherein the information transmitted between the calling terminal and the called terminal is voice information or data information.

The method according to claim 1, wherein when the calling terminal is a base station, the called terminal is a wireless terminal; when the calling terminal is a wireless terminal, the called terminal is a base station. Or wireless terminal.

The method according to claim 1, wherein the calling terminal in the step A issues a help signal comprising:

5. The method according to claim 4, wherein the step C further comprises:

The method according to claim 1, wherein the confirming in step B can provide assistance for information transmission between the calling terminal and the called terminal, including: - the wireless terminal separately checks the calling terminal and The signal quality of the called terminal. If the signal quality of the calling terminal and the called terminal can meet the communication quality requirements, the wireless terminal calls the calling terminal through the public random access channel in the network system, and the calling terminal and the called party. Information transfer between terminals provides assistance.

The method according to claim 1, wherein the resource is a time slot; and the wireless terminal in step C allocates a time slot for establishing a communication link between the calling terminal and the called terminal. Includes:

The method according to claim 7, wherein when the information is data information, the transmitting signal is data information sent by the calling terminal to the called terminal, and the reply signal is The control information that the terminal returns to the calling terminal.

9. The method according to claim 1, wherein the step C further comprises:

10. The method of claim 1 wherein the method is in step C After further including:

1 1. A system for implementing information transmission, characterized in that: the system comprises: a calling terminal, configured to initiate a call, and send a help signal to the wireless terminal if the response of the called terminal cannot be received, and according to the received a call from the wireless terminal, returning a receive help signal to the wireless terminal;

The system of claim 1 , wherein the wireless terminal is a first wireless terminal, the system further comprising: a second wireless terminal;

The first wireless terminal is further configured to: when the signal of the calling terminal and/or the called terminal is reduced, and fail to satisfy the communication quality, send a request to the second wireless terminal to provide communication for the primary called party to communicate with the second wireless terminal. Transmitting, and after receiving the acknowledgement signal of the incoming second wireless terminal, releasing the resource allocated to the communication link between the primary and the called terminal;

The second wireless terminal is configured to allocate resources for establishing a communication link between the calling and called terminals after receiving the request signal of the first wireless terminal, and serve as a called terminal on the allocated resource. Transfer information.

The system according to claim 1, wherein the wireless terminal is a first wireless terminal, the system further comprising: a second wireless terminal;

The first wireless terminal is further used for signal drop at the calling terminal and/or the called terminal When it is difficult to satisfy the communication quality, the stop help signal is sent to the calling terminal, and the resource allocated to the communication link between the called terminal and the called terminal is released;

The system according to any one of claims 1 to 13, wherein the calling terminal is a third wireless terminal, and the called terminal is a fourth wireless terminal or a base station.

The system according to any one of claims 1 to 13, wherein the calling terminal is a base station, and the called terminal is a third wireless terminal.