WO2012083815A1

WO2012083815A1 - Method, system and device for wireless data traffic access

Info

Publication number: WO2012083815A1
Application number: PCT/CN2011/084068
Authority: WO
Inventors: 赵建; 王映民; 赵瑾波; 秦飞
Original assignee: 大唐移动通信设备有限公司
Priority date: 2010-12-20
Filing date: 2011-12-15
Publication date: 2012-06-28
Also published as: CN102573005A; CN102573005B

Abstract

A method, system and device for wireless data traffic access are provided. The device includes a radio frequency module and a radio link control protocol(RLC) layer processing module; the radio frequency module is used for performing the interaction for the traffic data and the traffic signaling with a data traffic terminal via a wireless air interface after accepting a wireless data traffic request initiated by the data traffic terminal; the RLC layer processing module is used for performing the interaction for the traffic data and the traffic signaling via a network interface, wherein the external network which provides the wireless data traffic service，and accessing the data traffic terminal to the external network. An access node enables the data traffic terminal access to the external network simply and conveniently; the implementation is simple, the cost is low, and the transmission requirement of huge amounts of high-speed data of the wireless data traffic is met.

Description

Wireless data service access method, system and device The present application claims to be filed on Dec. 20, 2010, the Chinese Patent Application No. 201010597554.6, the Chinese patent application entitled "Wireless Data Service Access Method, System and Device" Priority is hereby incorporated by reference in its entirety. Technical field

The present invention relates to the field of wireless communication technologies, and in particular, to a wireless data service access method, system and device. Background technique

In recent years, with the popularity of the Mobile Internet and smartphones, the demand for mobile data traffic has grown rapidly. According to statistics, mobile data traffic has doubled every year, and the demand for mobile data traffic in 2014 is expected to reach 40 times that of 2009. The rapid growth of mobile data services has caused operators' networks to become overwhelmed, and has also affected traditional carrier-class services. At the same time, operators need to invest more operating costs for the ever-increasing data services.

The current mobile Internet technology application has driven the rapid development of broadband wireless data services. In particular, wireless data services are concentrated in nomadic scenes in hot spots such as the city environment or indoor environment. The design of traditional cellular mobile communication is limited by the carrier-class service design required by high-speed mobile, seamless handover and high QoS (Quality of Service). Generally, it is suitable for low-speed data. It is still or nomadic in the hotspot area. In the high-speed data service of the environment, there are disadvantages such as low transmission efficiency and high implementation cost, and it is difficult to meet the access and transmission requirements of wireless data services that require a large amount of high-speed data transmission.

Currently, in order to meet the access requirements of wireless data service access, mobile operators generally use the following two solutions:

Solution 1: The wireless local area network (WLAN) based on the unlicensed frequency band is used to implement wireless data service access.

WLAN system with unlicensed frequency band, also known as Wireless Fidelity (WiFi) system, for hotspot coverage, to realize the shunting of wireless data service access to hotspots, mainly using WLAN system and 3G (No. Three generations of mobile communication) The system is loosely coupled to implement core network authentication and charging in the 3G system. When the existing wireless WiFi service is used to access the Internet (Internet), the cellular network or the private network, the user terminal accesses the Access Point (AP) and the Access Controller (AC) through the wireless LAN. Access to the above network.

WiFi Use WiFi to access data traffic access in hotspots, although to some extent meet the needs of wireless data service access, but because of the use of WiFi, it is an unauthorized industrial science medical ( Industrial Scientific Medical, In the ISM band, the link shield cannot be guaranteed. 这种 This access method may interfere with various devices such as WiFi and microwave ovens. At the same time, because the working frequency band is an unlicensed band, multiple operators are When networking in the same area, if there is no good coordination and unified planning, there will be interference between each other, affecting the data service shield, resulting in poor user experience.

Since WiFi and cellular networks use different standard systems and have poor integration with existing cellular technologies, users usually need to manually select the access network, which makes it difficult to smoothly switch services between the two access networks. Mobile operators need to deploy two sets of networks at the same time. The corresponding terminals also need to use dual-mode terminals to increase network operation and user equipment cost investment.

Option 2: Use a home base station to access wireless data services.

According to the short indoor coverage distance and the small number of users, the home base station (Femto), which reduces the capacity requirements and power emissivity of a single station, is another shunting scheme for accessing wireless data services in hotspots. When the home base station implements the wireless data service access, the user equipment (User Equipment, UE) accesses the Internet through the Homee Node B (HeNB) and the Home Base Node Gateway (HeNB GW). Since the home base station needs to meet the access requirements of the normal mobile terminal, its architecture basically inherits the system structure and protocol stack structure of the base station in the cellular network, and is also suitable for low-speed data, and is in a stationary or nomadic environment at a hotspot area. In the case of data services, there are disadvantages such as low transmission efficiency and high implementation cost, and it is difficult to meet the access and transmission requirements of wireless data services that require a large amount of high-speed data transmission. Summary of the invention

The embodiments of the present invention provide a method, a system, and a device for accessing a wireless data service, which are used to solve the problem that a wireless data service access method cannot meet a large number of high-speed data transmission requirements of a wireless data service in the prior art, and has low transmission efficiency and complicated implementation. And the problem of high cost.

An access node includes: a radio frequency module and a radio link control protocol RLC layer processing module;

The radio frequency module is configured to perform service data and service signaling interaction with the data service terminal through the wireless air interface after receiving the wireless data service request initiated by the data service terminal;

The RLC layer processing module is configured to perform service data and service signaling interaction with an external network that provides a wireless data service service through a network port, and connect the data service terminal to an external network.

A data service terminal, comprising:

a radio frequency module, configured to establish a radio link connection with the access node, and initiate a wireless data service access request to the access node, access the external network by using the access node, and connect through the wireless air interface The ingress node performs service data and service signaling interaction.

A wireless data service access system includes: an access node and a data service terminal;

The access node is configured to receive a wireless data service access request initiated by the data service terminal, and then pass the wireless space The port and the data service terminal perform service data and service signaling interaction; and perform service data and service signaling interaction with the external network that provides the wireless data service service through the network port, and implement the data service terminal to access the external network;

The data service terminal is configured to establish a radio link connection with the access node, and request a wireless data service access initiated by the access node, access the external network by using the access node, and The air interface interacts with the access node for service data and service signaling.

An access node gateway, comprising:

An interface module, configured to receive a data signal and/or a signaling signal sent by the access node package;

The conversion module is configured to perform format conversion on the data signal and/or the signaling signal sent by the received access node, and convert the data format into a data format that can be recognized by the cellular network interface.

A method for accessing a wireless data service, comprising:

The access node accepts the wireless data service access request initiated by the data service terminal after establishing a wireless link connection with itself;

The service data and the service signaling are exchanged with the data service terminal through the wireless air interface, and the service data and the service signaling are exchanged with the external network through the network port, so that the data service terminal is connected to the external network.

The beneficial effects of the present invention are as follows:

Since the conventional cellular mobile communication system in the prior art is mainly for high-speed mobile, seamlessly switched carrier-class service design, suitable for low-speed data transmission with high mobility, when it carries high-speed wireless data service speed In the case of data, there are thousands of disadvantages such as low transmission efficiency and high implementation cost, and the use of WiFi and home base stations cannot solve this problem well, and the inventors of the present invention have noted that: users based on wireless data services are usually Fixed or very low-speed mobile, low mobility requirements; and wireless data services are mainly IP-based Internet services, QoS requirements are relatively simple, and far lower than the QoS requirements of carrier-class services. In order to solve this problem, the solution of the present invention receives the data service request initiated by the mobile terminal, and receives the service data and service signaling of the data service terminal by the data transmitted by the radio module included in the access node by the radio module of the access node, and The RLC layer processing module encapsulates the received data and sends it to the external network through the data network port.

The above implementation only needs to use some basic radio transmission and RLC layer processing functions, and based on LTE.

(Long Term Evolution, Long Term Evolution) The key technologies of the physical layer and MAC (Media Access Control) layer can realize efficient data transmission and meet wireless data services in indoor and hotspots through the network architecture of the single unit. Access requirements.

The implementation method integrates the access system and the corresponding access node device architecture, effectively reduces the cost input of the wireless data service access, and enables the operator to provide a large number of wireless data service connections for the growing users at low cost. The incoming demand solves the problem that the system architecture of the wireless data service access in the prior art is complicated, the access process is complicated, the transmission efficiency is low, and the implementation cost is high.

The implementation is improved on the basis of the existing LTE system protocol framework, so that it has the existing cellular network Better compatibility, smoother switching, and better user experience. DRAWINGS

1 is a schematic structural diagram of a wireless data service access system according to an embodiment of the present invention;

2 is a schematic structural diagram of a protocol stack used by an access node according to Embodiment 1 of the present invention;

3 is a schematic structural diagram of an access node according to Embodiment 1 of the present invention;

4 is a schematic structural diagram of a data service terminal according to Embodiment 1 of the present invention;

5 is a schematic structural diagram of a protocol stack used by an access node according to Embodiment 2 of the present invention;

6 is a schematic structural diagram of an access node according to Embodiment 2 of the present invention;

7 is a schematic structural diagram of an access node gateway according to Embodiment 2 of the present invention;

8 is a schematic structural diagram of a base station according to Embodiment 3 of the present invention;

9 is a schematic structural diagram of a mobile terminal according to Embodiment 3 of the present invention;

10 is a flowchart of a method for accessing a wireless data service according to Embodiment 4 of the present invention;

11 is a flowchart of a method for accessing a wireless data service according to Embodiment 5 of the present invention;

12 is a flowchart of a method for accessing a wireless data service according to Embodiment 6 of the present invention;

FIG. 13 is a flowchart of a data service terminal access state switching according to Embodiment 7 of the present invention. detailed description

According to the indoor environment and the urban environment, data service users are usually fixed or relatively low-speed mobile, and have low mobility requirements. The data service is mainly IP-based Internet (Internet) service, and the service shield ( The requirements of QoS are also relatively simple, far lower than the QoS requirements of carrier-class real-time services. Based on the foregoing features of the data service access, the embodiment of the present invention provides a wireless data service access system, which is technically modified based on the existing cellular mobile communication technology to meet low mobility, low Q ₀ S, and low-cost wireless. Data service access requirements, suitable for wireless data service access for high-speed data services in stationary or pastoral environments. The system structure is as shown in FIG. 1, and includes: an access node (Access Node, AN) 10 and a thousand data service terminal 20.

The access node 10 is configured to perform service data and service signaling interaction with the data service terminal 20 through the wireless air interface after receiving the wireless data service access request initiated by the data service terminal 20, and provide wireless data service service through the network port The external network performs service data and service signaling interaction, and implements the data service terminal 20 to access the external network. Among them, the external network includes a cellular network, a private network, and an Internet (Internet) network. The wireless air interface specifically uses a wireless air interface compatible with the air interface of the 3GPP protocol similar to the 3GPP protocol.

The data service terminal 20 is configured to establish a wireless link connection with the access node 10, and initiate a wireless data service access request to the access node 10, and access the external network through the access node 10; and access through the wireless air interface and the access Node 10 performs service data and service signaling interaction. The data service terminal 20 may include a personal computer (PC), a handheld terminal, Home electronics, mobile terminals, etc.

Preferably, the access node 10 is further configured to: establish a communication connection with the external network, and broadcast the access configuration information of the external network, specifically:

When the external network is a cellular network, after establishing a communication connection with the cellular network, the cellular network obtains the access configuration information, and broadcasts the acquired access configuration information of the cellular network to the data service terminal 20.

When the external network is an IP-based Internet network and a private network, the signal strength of each frequency point in the environment is detected, and the access configuration information of the external network is configured according to the detected signal strength and broadcast to the data service terminal 20.

The access node 10 is further configured to: broadcast a synchronization signal to the data service terminal 20.

Preferably, the data service terminal 20 is further configured to: search for a synchronization signal of the access node 10, establish synchronization with the access node 10; and acquire access configuration information of the external network broadcast by the access node 10, and the access node. 10 Establish a wireless link connection.

Preferably, the wireless data service access system as shown in FIG. 1 further includes an Access Node Gateway (AN-GW). 30. Optionally, the access node 10 can pass through the access node gateway 30 and externally. The network establishes a communication connection.

Preferably, when the external network is a cellular network, the access node 10 establishes a communication connection with the external network through the access node gateway 30. The access node gateway 30 is configured to receive the service data and/or service signaling encapsulated by the access node 10, convert the data format that can be recognized by the cellular network interface, and send the data format to the cellular network.

That is to say, in the system shown in FIG. 1, the data service terminal 20 can access the external network directly through the access node 10, or can access the external network through the access node 10 through the access node 10.

In order to achieve good convergence and smooth handover with the existing cellular network access, the above system is improved on the basis of the original cellular network access technology, and the access node 10 uses the air interface to exchange information with the data service terminal 20, The IP protocol or the serialized S 1 (interface) interface interacts with the external network and maintains compatibility with the cellular network in key technology designs such as the physical layer and the MAC layer.

Embodiment 1:

In the wireless data service access system provided by the first embodiment of the present invention, the data service terminal 20 directly accesses the external network through the access node 10. This access method is generally more applicable to the case where the data service terminal 20 accesses the Internet network and the private network through the access node 10. When using this access method, the protocol stack structure used by the access node 10 is as shown in FIG. 2. among them:

The protocol stack structure includes a physical (PHY) layer using a mass interface protocol, a Media Access Control (MAC) layer, a Radio Link Control (RLC) layer, and a radio resource embedded in the MAC layer. The Radio Resource Control (RRC) layer implements wireless data service access through the RLC layer.

The physical layer implements coding and decoding of service data and service signaling, modulation and demodulation, multi-antenna transmission, link adaptation, and retransmission. In the uplink direction, the physical layer transmits the service data and service signaling of the MAC layer to the radio frequency module in the access node 10, and receives the radio frequency signal received by the radio frequency module in the downlink direction to form a data packet of the MAC layer. In order to reduce the equipment cost of the access node 10 and improve the data transmission efficiency, it is suitable for indoor data transmission, and the physical layer of the original cellular network technology (such as the physical layer of the LTE system) can be simplified as follows: Configure larger measurement and feedback cycles, configure fewer control channels and reference symbols, and more.

The MAC layer mainly implements group (de)packet, scheduling, transmission, and retransmission of data packets. Compared with the MAC layer of traditional cellular network technology (such as the MAC layer of LTE system), the MAC layer can be reorganized: the original complex QoS control, priority control, the complexity of the user scheduling algorithm and the scheduling process, Access control process, etc. Generally, in order to maintain compatibility with existing cellular networks, the MAC layer uses the same packet structure as that of the existing LTE protocol.

The RLC layer mainly implements functions such as packet segmentation, cascading, acknowledgment, and retransmission, and functions similarly to the RLC layer in the traditional cellular network technology (such as the RLC layer of the LTE system).

The RRC layer is a RRC (mini-RRC) layer, which is a radio resource management layer embedded in a MAC layer Service Data Unit (SDU). The RRC layer implements basic radio link control and radio resource management functions, and may include necessary network attached storage (NAS) signaling processing. Compared with the RRC layer in the traditional cellular network technology (such as the RRC layer of the LTE system), Inter-RAT (Inter Radio Access Technology) handover, MBMS (Multimedia Broadcast/Multicast Service) can be removed. With functions such as multicast service, it greatly expands functions such as system information broadcast, information transmission, various cell signal measurement, and reporting and paging.

The structure of the access node 10 is as shown in FIG. 3, and includes: a radio frequency module 101 and an RLC layer processing module 104. The radio frequency module 101 is configured to perform service data and service signaling interaction with the data service terminal 20 through the wireless air interface after receiving the wireless data service request initiated by the data service terminal 20.

The RLC layer processing module 104 is configured to perform service data and service signaling interaction with the external network that provides the wireless data service service through the network port, and connect the data service terminal 20 to the external network.

The radio frequency module 101 is further configured to: after the RLC layer processing module 104 establishes a communication connection with the external network, broadcast the access configuration information of the external network to the data service terminal 20.

Preferably, the RLC layer processing module 104 is configured to directly implement service data and service signaling interaction with the external network through the network port, or implement the service data by using the set access node gateway 30 and the external network through the network port. Interact with service signaling.

That is to say, the radio frequency module 101 realizes interaction with the wireless communication connection of the wireless data terminal 20 and information such as data and signaling. The RLC layer processing module 104 implements an interactive connection with an external network. When interacting with an external network, the data transmission method based on the IP protocol is used, and the data packet is encapsulated by the IP protocol.

The access node 10 further includes: a physical layer processing module 102, and performs service data and services with the radio frequency module 101. The signaling interaction is used to perform coding, decoding, and demodulation processing on at least one of the received service data and the service signaling.

Preferably, when the physical layer processing module 102 performs coding, decoding, and demodulation processing on the service data and the service signaling, the physical layer of the LTE protocol standard modifies one or a combination of the following functions:

Reduce multi-antenna transmission mode, configure larger measurement cycles, configure larger feedback cycles, configure fewer control channels, and configure fewer reference symbols.

The access node 10 further includes: a MAC layer processing module 103, configured to perform service data and service signaling interaction with the physical layer processing module 102, and configured to perform access control on at least one of the received service data and the service signaling. , scheduling control and transmission control. Generally, in order to maintain compatibility with existing cellular networks, the MAC layer processing module uses the same packet structure as that of the existing LTE protocol, or the same as the MAC layer processing module specified by the LTE protocol.

Preferably, the MAC layer processing module 103, when performing access control, scheduling control, and transmission control on at least one of service data and service signaling, modifies one or a combination of the following functions to the MAC layer of the LTE protocol standard: The Shield Control Service QoS Control Process, the Cylinder Priority Control Process, the Cylinder User Scheduling Algorithm, and the Cylinder Access Control Process.

The access node 10 further includes: an RRC layer processing module 105 embedded in the MAC layer processing module 103, configured to perform service signaling interaction with the MAC layer processing module 103, to implement radio link control and radio resource management.

Preferably, the RRC layer processing module 105 modifies one or a combination of the following functions to the RRC layer of the LTE protocol standard during radio link control and radio resource management:

Reduce the network attached storage (NAS) signaling processing process, the process of the random access, the process of the centralized access control, the information broadcasting process of the system, the process of transmitting and receiving information of the system, the process of measuring the signal of the cell, Reduce the reported configuration information, reduce the reported paging information, remove the Inter-RAT handover function, and remove the Multimedia Broadcast Multicast Service (MBMS) function.

The RLC layer processing module 104 is further configured to: perform service data interaction with the MAC layer processing module 103, and perform segmentation, cascading, acknowledgment (ACK or NACK), and retransmission processing on the received service data. .

The structure of the data service terminal 20 is as shown in FIG. 4, and includes: a radio frequency module 201, configured to establish a radio link connection with the access node 10, and initiate a wireless data service access request to the access node 10, through the access node. 10 accessing the external network; and performing service data and service signaling interaction with the access node 10 through the wireless air interface.

The data service terminal 20 further includes: a physical layer processing module 202, configured to perform service data and service signaling interaction with the radio frequency module 201 in the data service terminal 20, and configured to perform at least one of received service data and service signaling. The coding, decoding, and demodulation processing are performed.

When the physical layer processing module 202 in the data service terminal 20 performs codec and modulation and demodulation processing on the service data and the service signaling, one or a combination of the following functions is modified for the physical layer of the LTE protocol standard:

Reduce multi-antenna transmission mode, configure larger measurement cycles, configure larger feedback cycles, configure less control Channels and configuration fewer reference symbols.

Preferably, the physical layer processing module 202 is further configured to: search for the synchronization signal of the access node 10 by using the radio frequency module 201, establish synchronization with the access node 10, and acquire an access configuration of the external network broadcast by the access node 10. Information, establishing a wireless link connection with the access node 10. Specifically, the radio frequency module 201 searches for a signal, and the physical layer processing module 202 identifies whether it is a synchronization signal and performs corresponding processing.

The data service terminal 20 further includes: a MAC layer processing module 203, configured to perform service data and service signaling interaction with the physical layer processing module 202, and configured to perform access control, scheduling control, and control on the received service data and service signaling. Transmission control. Generally, in order to maintain compatibility with existing cellular networks, the MAC layer processing module 203 uses the same packet structure as that defined by the existing LTE protocol, or is the same as the MAC layer processing module specified by the LTE protocol.

Preferably, the MAC layer processing module 203 performs one or a combination of the following functions on the MAC layer of the LTE protocol standard when performing access control, scheduling control, and transmission control on the service data and the service signaling:

The Shield Control Service, the QoS control process, the centralized user scheduling algorithm, and the centralized access control process.

The data service terminal 20 further includes: an RRC layer processing module 205 embedded in the MAC layer processing module 203, configured to perform service signaling interaction with the MAC layer processing module 203 to implement radio link control and radio resource management.

The RRC layer processing module 205 modifies one or a combination of the following functions for the RRC layer of the LTE protocol standard during radio link control and radio resource management:

Reduce the network attached storage (NAS) signaling processing process, the process of the random access, the process of the centralized access control, the information broadcasting process of the system, the process of transmitting and receiving information of the system, the process of measuring the signal of the cell, Reduce the reported configuration information, reduce the reported paging information, remove the inter-RAT switching function, and remove the MBMS function.

The data service terminal 20 further includes: an RLC layer processing module 204, which performs service data interaction with the MAC layer processing module 203, and is used for segmenting, cascading, confirming, and retransmitting the received service data.

The data service terminal 20 further includes: an application layer module 206, configured to present service data carried by the service data to the user.

Embodiment 2:

In the wireless data service access system provided by the second embodiment of the present invention, the data service terminal 20 accesses the external network through the access node 10 and the access node gateway 30.

The structure of the protocol stack used by the access node 10 is shown in Figure 5. The protocol stack structure includes a physical (PHY) layer using a mass interface protocol, a medium access control (MAC) layer, a radio link control protocol (RLC) layer, and a radio resource control protocol (RRC) layer embedded in the MAC layer. Wireless data service access is implemented through the RLC layer. Specific functions of each layer See the description of Embodiment 1.

The protocol stack structure further includes: a small SI ( Mini SI) interface, and interacts with the access node gateway 30 to implement service data and service signaling. The integrated SI interface can implement some basic functions that can be implemented by the S1 interface in the prior art, including radio bearer management, context management, configuration management of the bill, and the like, and cancels the original S 1 that is not required for wireless data service access. Some functions of the interface, such as switching function, paging function, CDMA (Code Division Multiple Access) 2000 tunneling function, positioning function, overload balancing function, etc.

The packet encapsulated by the protocol selected by the S1 interface is sent to the access node gateway 30 by using the centralized S1 interface, and the data packet sent by the access node gateway 30 to the serialized S1 interface is parsed and implemented. The data format conversion is converted into a data packet identifiable by the original S1 interface conforming to the cellular network technology, so that the plurality of access nodes 10 can share one access node gateway 30. Compared with directly setting the S 1 interface in the access node 10, the structure of the access node 10 is further simplified, which saves equipment cost.

As shown in FIG. 6, the structure of the access node 10 provided in the second embodiment of the present invention includes: a radio frequency module 101, a physical layer processing module 102, a MAC layer processing module 103, an RLC layer processing module 104, and a MAC layer processing module 103. The RRC layer processing module 105 in the middle.

Preferably, the access node 10 further includes an interface module 106.

The interface module 106 is configured to: when the external network is a cellular network, encapsulate the service data sent by the RLC layer processing module 104, the service signaling sent by the RRC layer, and send the information to the cellular network; and send the service to the received cellular network. The data is parsed and transmitted to the RLC layer processing module 104, and the service signaling sent by the received cellular network is parsed and transmitted to the RRC layer processing module 105.

Preferably, the interface module 106 is specifically configured to: implement radio bearer management, context management, and data encapsulation of signals according to a selected encapsulation protocol; wherein, the standard of the selected encapsulation protocol for the cellular network S1 interface is used. The agreement has been modified or combined with one of the following modifications:

Cancel the switch function, cancel the paging function, cancel the CDMA2000 (Code Division Multiple Access 2000) tunnel function, cancel the positioning function, and cancel the overload balance function.

The structure of the access node gateway 30 is as shown in FIG. 7, and includes: an interface module 301 and a conversion module 302.

The interface module 301 is configured to receive service data and/or service signaling sent by the access node 10.

The conversion module 302 is configured to perform format conversion on the received data signal and/or signaling signal sent by the access node 10, convert the data format that can be recognized by the cellular network interface, and send the data format to the external network.

The configuration of the data service terminal 20 is the same as that shown in FIG. 2 in the first embodiment. The structure of the data service terminal 20 is the same as that shown in FIG. 4 in the first embodiment, and details are not described herein again.

The access node 10 and the access node gateway 30 provided in the foregoing Embodiment 2 are mainly applicable to the wireless data service accessing the cellular network, and may set an access node gateway 30 for multiple access nodes to implement data format conversion, further The structure of the access node 10.

Embodiment 3:

The wireless data service access system provided in Embodiment 3 of the present invention integrates the function of the access node 10 into an existing bee In the base station of the nest network, the functions of the data service terminal 20 are integrated in the existing mobile terminal.

The structure of the integrated base station is as shown in FIG. 8. The air interface part includes the original radio frequency module 401, the original physical layer processing module 402, the original MAC layer processing module 403, and the original RLC layer processing module 404. The original PDCP layer processing module 405 and the original RRC layer processing module 406 also include a new MAC layer processing module 407.

The function of the MAC layer processing module 407 is the same as that of the MAC layer processing module 103 in the first embodiment, and may also be embedded in the RRC layer processing module 105. The difference is that the MAC layer processing module 407 coexists with the original MAC layer module 403 of the base station, and shares the original physical processing layer module 402 and the RLC layer processing module 404. In addition, when the frequency of the radio frequency module is the same, The original radio frequency module 401 is shared.

The base station shown in FIG. 8 includes a new interface module, that is, a centralized S1 interface module 409, in addition to the original S1 interface 408, the original transport layer, and the original physical layer included in the original base station. A new physical layer and transport layer may be included, or the physical layer and transport layer may be shared with the original S1 interface 408.

The cellular network is implemented by the original radio frequency module 401, the original physical layer processing module 402, the original MAC layer processing module 403, the original RLC layer processing module 404, the original PDCP layer processing module 405, the original RRC layer processing module 406, and the original S1 interface module 408. Mode access. It is implemented by the existing cellular network technology and conforms to the existing LTE protocol standard, and will not be described here.

The wireless data service is accessed by the original radio frequency module 401, the original physical layer processing module 402, the MAC layer processing module 407, the original RLC layer processing module 404, and the centralized S1 interface module 409. The base station can meet the transmission requirements of low-speed data of mobile communication with high moving speed, high QoS and high security, and can also meet the high-speed data access requirement of wireless data services with low moving speed, relatively low QoS and low security. .

The structure of the integrated mobile terminal is as shown in FIG. 9. The air interface part includes the original radio frequency module 501, the original physical layer processing module 502, the original MAC layer processing module 503, and the original RLC layer processing module. 504. The original PDCP layer processing module 505, the original RRC layer processing module 506, and the original application layer module 507 further include a new MAC layer processing module 508 and a new application layer module 509.

The function of the MAC layer processing module 508 is the same as that of the MAC layer processing module 203 in the first embodiment, and may also be embedded in the RRC layer processing module 205. The difference is that the MAC layer processing module 508 coexists with the original MAC layer processing module 503 of the mobile terminal, and shares the physical layer processing module 502 and the RLC layer module 504. In addition, when the frequency of the radio frequency module is the same, The original radio frequency module 501 is shared.

The application layer module 509 is configured to present relevant data information of the wireless data service to the user.

The cellular network is implemented by the original radio frequency module 501, the original physical layer processing module 502, the original MAC layer processing module 503, the original RLC layer processing module 504, the original PDCP layer processing module 505, the original RRC layer processing module 506, and the original application layer module 507. Mode access. It is implemented by the existing cellular network technology and conforms to the existing LTE protocol standard, and will not be described here.

Through the above original radio frequency module 501, the original physical layer processing module 502, the MAC layer processing module 508, the original RLC layer The processing module 504 and the application layer module 509 implement access to the wireless data service. The mobile terminal can meet the transmission requirements of low-speed data of mobile communication with high moving speed, high QoS and high security, and can also achieve high-speed data access of wireless data services with low moving speed, relatively low QoS and low security. demand.

It is of course also possible to directly set the access node 10 in the first and second embodiments as a device in the base station, and to set the data service terminal 20 in the first and second embodiments as a device in the mobile terminal.

The base station and the mobile terminal provided in the foregoing Embodiment 3 can implement the access requirements of the existing two modes of cellular network access and wireless data service access, and the use of the protocol stack structure based on the same design basis is better. Compatibility, thus facilitating the mobile terminal to switch between the two access modes.

That is to say, the access nodes 10 provided in the foregoing Embodiments 1, 2, and 3 can be set separately or in combination with the existing base stations, and serve as a supplementary function of the existing cellular system base stations. Similarly, the data service terminal 20 provided in the foregoing first, second, and third embodiments may be separately set or may be integrated with an existing mobile terminal as a supplementary function of the existing mobile terminal. The access node 10 can be integrated with the existing cellular system base station, share the physical layer and the MAC layer, share the RLC layer, and the like; and the data service terminal 20 can also integrate with the existing mobile terminal to design and share the physical layer and the MAC layer, and share the RLC. Layers, etc.; mobile terminals can basically achieve single-mode, single-signal design, which can further save costs. At the same time, it is easier to switch between two access modes, which is beneficial to service and load coordination, and improves application flexibility and users. Perception.

Embodiment 4:

The fourth embodiment of the present invention provides a method for accessing a wireless data service, and uses the wireless data service access system shown in FIG. 1 to implement wireless data service access. The process of the method is as shown in FIG. 10, and includes the following steps:

Step S11: The access node receives a wireless data service access request initiated by the data service terminal after establishing a wireless link connection with itself.

The data service terminal synchronizes with the access node by searching the synchronization signal of the access node, and then reads the access configuration information of the external network broadcasted by the access node, and acquires the system access related parameters of the external network according to the access configuration information. And then reside in the cell of the access node. After establishing a radio link connection with the access node, the data service terminal may send a wireless data service access request to the access node to request access to the wireless data service provided by the external network.

Step S12: The access node performs service data and service signaling interaction with the data service terminal through the wireless air interface. The access node and the data service terminal implement service data and service signaling interaction through the wireless air interface, and the data format conforms to the 3GPP protocol standard or is compatible with the 3GPP protocol standard.

The process of the service data interaction between the access node and the data service terminal includes:

The access node or the service data terminal receives the service data through the radio module included in the service; the service data is sequentially provided to the physical layer processing module, the MAC layer processing module, and the RLC layer processing module; the RLC layer processing module processes the data. After the service data is sequentially provided to the processing of the MAC layer processing module and processed by the physical layer processing module, the data is sent to the radio frequency module for transmission. The process of the service signaling interaction between the access node and the data service terminal includes:

The access node or the service data terminal receives the service signaling by using the radio frequency module included in the service; the service signaling is sequentially provided to the physical layer processing module included in the self, the processing processed by the MAC layer processing module, and the RRC layer embedded in the MAC layer processing module. The processing module processing is performed by the RRC layer processing module, and the processed service signaling is sequentially sent to the processing of the MAC layer processing module and processed by the physical layer processing module, and then sent to the radio frequency module for transmission.

Step S13: The access node performs service data and service signaling interaction with the external network through the network port, and implements the data service terminal to access the external network.

The access node forwards the service data and service signaling of the data service terminal to the external network to the external network through the network port, and receives the service data and service signaling of the external network through the network port, and transfers the data to the data service terminal through the air interface.

Embodiment 5:

In the wireless data service access method provided by the fifth embodiment of the present invention, the data service terminal accesses the external network through the access node and the access node gateway, and the method is more applicable to the case where the external network is a cellular network, and the method flow is shown in FIG. 11 . As shown, it includes the following steps:

Step S101: The access node establishes a communication connection with the external network.

After the access node is powered on, a connection and communication process is established between the access node gateway and the cellular network core network. The parameter information of the core network configuration is obtained from the core network. When the external network is a cellular network, the access node establishes a communication connection with the cellular network, and obtains the access configuration information of the cellular network. The access configuration information includes the allocated power and frequency point information, etc., and the access parameter configuration is completed.

That is, the access node receives information such as the frequency, power, and transmission parameters within the specified range used by the network side.

Step S102: The access node broadcasts access configuration information of the external network.

The access node broadcasts the access configuration information of the external network according to the set period for the data service terminal to search for and use.

Step S103: The data service terminal searches for the synchronization signal of the access node, and completes synchronization with the access node.

After the data service terminal is powered on, it searches for the synchronization signal of the access node in its own environment. When the synchronization signal is searched, it establishes synchronization with the access node that sends the synchronization signal, including synchronization of time and other various information.

Step S104: The data service terminal acquires access configuration information of the external network broadcast by the access node, and requests to establish a wireless link connection with the access node.

After the data service terminal synchronizes with the access node, the access configuration information of the external network broadcasted by the access node is read. Obtaining the system access parameter of the external network from the access configuration information, since the system access parameter of the external network includes the camped cell information, the camping in the cell of the access node is implemented.

Step S105: The data service terminal initiates a wireless data service access request.

After the data service terminal resides in the cell of the access node, the wireless data service access request can be initiated at any time. Number According to the service terminal, the wireless data service access request can be triggered by the application layer to initiate random access of the wireless data service.

The foregoing step S103 to step S105 enable the data service terminal to initiate a wireless data service access request according to the obtained access configuration information.

Step S106: The access node receives the wireless data service access request sent by the data service terminal.

Between the access node of the protocol stack and the data service terminal, the wireless link establishment and authentication and registration are completed through the RRC protocol, so that the access node accepts the wireless data service access initiated by the data service terminal. request.

Step S107: The access node performs service data and service signaling interaction with the data service terminal through the wireless air interface. After the data service terminal establishes a wireless link connection with the access node, the access node and the access node gateway access the external network, and start the transmission and communication of the service data and the service signaling of the wireless data service, according to the 3GPP protocol or with 3GPP. Protocols with compatible protocols are implemented through wireless air interfaces.

Step S108: The access node performs service data and service signaling interaction with the external network through the network port.

The access node forwards the service data and service signaling exchanged between the data service terminal and the external network through the network port, so that the data service terminal is connected to the external network through the access node and the access node gateway.

The above step S 106 - step S 108 realizes that the access node accesses the data service terminal to the external network. And when the external network is a cellular network, the data service terminal is connected to the external network through the access node gateway, and specifically includes:

The interface module included in the access node encapsulates the service data and/or service signaling, and sends the data to the access node gateway; the access node gateway converts the service data and/or service signaling into data that can be identified by the cellular network interface. Format, sent to the cellular network.

Step S109: When the data service terminal cancels the wireless data service access, the wireless link resource is released, and the connection with the external network is disconnected.

After the data service terminal completes the data service communication requirement, the wireless link resource is released, and the connection with the access node, the access node gateway, and the external network is disconnected, and the wireless data service access process is terminated.

In the above five embodiments, the access node uses the external network configuration parameter, that is, the mode controlled by the operator. The basic sending parameters used by the access node in this mode are sent by the external network through the access node gateway to the data service terminal via the S1 interface of the access node. This method is more suitable for the case where the data service terminal accesses the cellular network through the access node.

Example 6:

The method for accessing the wireless data service provided by the sixth embodiment of the present invention, the data service terminal directly accesses the external network through the access node, and the process of the method is as shown in FIG. 12, and includes the following steps:

Step S201: The access node detects the signal strength of each frequency point in the environment where the access node is located.

When the external network is an IP-based Internet network and a private network, the access node is connected to the external network after being powered on. The signal is connected to detect the signal strength of each frequency point in its own environment.

Step S202: Configure access configuration information of the external network according to the detected signal strength.

The configuration of the access configuration information is completed by selecting the power and frequency point information according to the detected signal strength. That is to say, the access node configures the frequency, power and transmission parameters in the specified range, and the general access node selects various parameters in the access configuration information according to the detection result within the allowable range of audible interference. .

Step S203: The access node broadcasts access configuration information of the external network.

Step S204: The data service terminal searches for the synchronization signal of the access node, and completes synchronization with the access node.

After the service data terminal is powered on, it searches for the synchronization signal of the access node in its own environment. When the synchronization signal is searched, it establishes synchronization with the access node that sends the synchronization signal, including synchronization of time and other various information.

Step S205: The data service terminal acquires access configuration information of the external network broadcast by the access node, and requests to establish a wireless link connection with the access node.

After the service data terminal synchronizes with the access node, the access configuration information of the external network broadcasted by the data service terminal is read. Obtaining system access parameters of the external network from the access configuration information, and implementing the camping in the cell of the access node.

Step S206: A wireless data service access request initiated by the data service terminal.

After the data service terminal resides in the cell of the access node, the wireless data service access request can be initiated at any time. The data service terminal can trigger a wireless data service access request through its application layer to initiate random access of the wireless data service.

The foregoing step S204-S206 implements a wireless data service access request initiated by the data service terminal according to the acquired access configuration information.

Step S207: The access node receives the wireless data service access request sent by the data service terminal.

The wireless link establishment, authentication and registration are completed by the RRC protocol between the access node and the data service terminal of the protocol stack, and the access node receives the wireless data service initiated by the data service terminal. Into the request.

Step S208: The access node performs service data and service signaling interaction with the data service terminal through the wireless air interface. After the data service terminal establishes a wireless link connection with the access node, the access node accesses the external network, and starts the transmission and communication of the service data of the wireless data service and the service signaling, which is compatible with the 3GPP protocol or the 3GPP protocol. The protocol is implemented through a wireless air interface.

Step S209: The access node performs service data and service signaling interaction with the external network through the network port, and connects the data service terminal to the external network.

The access node forwards the service data and service signaling between the data service terminal and the external network through the network port, so that the data service terminal is connected to the external network through the access node. The above steps S207-S209 enable the access node to access the data service terminal to the external network. And when the external network is a cellular network, the data service terminal is connected to the external network through the access node gateway,

Step S210: When the data service terminal cancels the access of the wireless data service, the wireless link resource is released, and the connection with the external network is disconnected.

In the foregoing embodiment, the access node uses the user's self-configuring parameters to detect and monitor the surrounding signals, and configures and selects the used frequency, power, and transmission parameters within the specified range, which is not limited by the configuration of the operator. The method is more suitable for the scenario where the data service terminal directly accesses the Internet network and the private network through the access node.

Example 7:

The wireless data service access method provided in Embodiment 7 of the present invention implements smooth handover of two access modes of the data service terminal accessing in the cellular network mode and accessing the wireless data service through the access node to access the external network.

That is to say, the data service terminal shown in FIG. 1 can access the external network using the cellular network mode. When accessing the external network by using the cellular network mode, when the service data transmission rate of the service decreases to less than the set rate threshold, searching for the synchronization signal of the access node in the surrounding environment; establishing wireless with the access node according to the searched synchronization signal The link connection enables switching from accessing the external network using the cellular network mode to accessing the external network through the access node 10.

The flow of the data service terminal access state switching method is as shown in FIG. 13 and includes the following steps:

Step S301: The service data service terminal accesses the external network by using a cellular network mode.

The data service terminal supports two modes of operation: cellular network mode access and wireless data service access through the access node to access the external network.

Step S302: Monitor a data transmission rate of the wireless data service of the data service terminal.

When other cellular network users appear in the surrounding environment, especially when there are many users, the data transmission rate of the wireless data service accessed by the cellular network mode is usually affected.

Step S303: Whether the service data transmission rate is less than a set rate threshold.

If yes, go to step S304; otherwise, go back to step S302.

The rate threshold is set empirically based on the transmission rate requirements of the wireless data service. Generally, it should be able to guarantee normal data transmission of wireless data services and avoid long delays.

Step S304: The data service terminal searches for a synchronization signal of the access node in the surrounding environment.

When the service data transmission rate decreases to less than the set rate threshold, the data service terminal searches for the synchronization signal of the access node in the surrounding environment to detect the presence or absence of the access node and the signal strength in the surrounding environment.

Step S305: Establish a wireless link connection with the access node according to the searched synchronization signal.

When an access node with a signal strength meeting the data transmission requirement of the wireless data service is found, the wireless data service access is implemented through the detected access node. For details of the access process, refer to the related descriptions of Embodiments 4, 5, and 6.

Step S306: Switching the wireless data service from accessing the external network using the cellular network mode to accessing the external network through the access node.

After the data service terminal accesses the wireless data service through the access node, the data transmission of the wireless data service originally implemented by the cellular network mode is transferred to the transmission through the access node. It completes the conversion between the wireless data service access in the cellular mode access mode and the access node access mode.

Step S307: The data service terminal releases the link resource originally occupied by the connection with the cellular network.

The data service terminal releases the connection of the originally occupied cellular network link and the channel resource, and implements smooth switching of the two wireless data service access modes.

The foregoing wireless data service access system, method and related device provided by the embodiments of the present invention improve the cellular network protocol stack of the original LTE protocol, and retain the basic functions of the original protocol stack as much as possible, and satisfy the mobile device movement. Speed, QoS, and security requirements are low, but the access requirements of wireless data service access for transmitting a large amount of high-speed data are required, which solves the problem that the prior art cannot meet the increasing demand for wireless data service access.

After receiving the data service request initiated by the mobile terminal, the radio frequency module included in the access node receives the service data and the service signaling of the data service terminal through the data sent by the wireless air interface, and the RLC layer processing module encapsulates the received data. Then send it to the external network through the data network port. Only need to use some basic RF transmission and RLC layer processing functions, as well as key technologies based on LTE physical layer and MAC layer to achieve efficient data transmission, and meet the wireless data services in indoor and hotspots through the network architecture of the single unit. Access requirements, to achieve a single, convenient.

The implementation method integrates the access system and the corresponding access node device architecture, effectively reduces the cost input of the wireless data service access, and enables the operator to provide a large number of wireless data service connections for the growing users at low cost. The incoming demand effectively reduces the cost overhead of the data service, and solves the problem that the system architecture of the wireless data service access in the prior art is complicated, the access process is complicated, the transmission efficiency is low, and the implementation cost is high.

The implementation is improved on the basis of the existing LTE system protocol framework, and the underlying key technologies such as the physical layer of the cellular mobile communication are reused, and the radio module, the physical layer, the MAC layer, the RLC layer, and the like are the same or compatible with the corresponding cellular system. Sexual protocol stack structure design; because it is based on the same standard system as the cellular network, it has better compatibility with the existing cellular network, facilitates smooth handover, can achieve higher network convergence, improve system efficiency and user experience. effect. The existing cellular network technology, system architecture and protocol stack are relatively complicated in design and high in implementation cost. This method enables data terminal users to quickly access cellular mobile networks through the architecture, protocol stack design and process design of the cellular network. A dedicated network or Internet network reduces the complexity of operations and data processing, and has a good integration with cellular mobile communication systems.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention can be applied to one or more computers in which computer usable program code is included. A form of computer program product embodied on a storage medium (including but not limited to disk storage, CD-ROM, optical storage, etc.).

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each process and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

Although the preferred embodiment of the invention has been described, it will be apparent to those of ordinary skill in the art that <RTIgt; Therefore, the appended claims are intended to be construed as including the preferred embodiments and the modifications

The embodiment of the present invention adds uplink parameter information to the system information, so that the terminal can work on the asymmetric TDD cell according to the system information, thereby improving the efficiency of the terminal.

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

Claims

Rights request

An access node, comprising: a radio frequency module and a radio link control protocol RLC layer processing module;

The access node according to claim 1, wherein the RLC layer processing module is configured to directly implement service data and service signaling interaction with the external network through the network port, or through the network itself. The access node gateway that is set up interacts with the external network to implement service data and service signaling.

3. The access node of claim 1, further comprising:

The physical layer processing module performs service data and service signaling interaction with the radio frequency module, and is used for encoding, decoding, and demodulating and processing the received service data and service signaling.

The access node according to claim 3, wherein the physical layer processing module performs physical code modification on the long-term evolution LTE protocol standard when encoding, decoding, and demodulating the service data and the service signaling. One or a combination of the following features:

5. The access node of claim 3, further comprising:

The media access control MAC layer processing module performs service data and service signaling interaction with the physical layer processing module, and is used for performing access control, scheduling control, and transmission control on the received service data and service signaling.

6. The access node according to claim 5, wherein the MAC layer processing module uses the same packet structure as that specified by the existing LTE protocol.

The access node according to claim 5, wherein the MAC layer processing module controls the MAC of the LTE protocol standard when performing access control, scheduling control, and transmission control on the service data and the service signaling. Layers modify one or a combination of the following features:

The access node of claim 5, further comprising:

A radio resource control protocol RRC layer processing module embedded in the MAC layer processing module is configured to perform service signaling interaction with the MAC layer processing module to implement radio link control and radio resource management.

9. The access node according to claim 8, wherein the RRC layer processing module is in a wireless link control In the system and radio resource management, the RRC layer of the LTE protocol standard modifies one or a combination of the following functions: Reduces the network attached storage NAS signaling processing process, the process of the random access, the process of the centralized access control, and the process System information broadcast process, system information transmission and reception process, process of measuring cell signal, reducing configuration information, reducing paging information, removing inter-RAT switching function of wireless access technology across networks, and removing Multimedia Broadcast Multicast Service MBMS function.

The access node according to claim 8, wherein the RLC layer processing module performs service data interaction with the MAC layer processing module, and is used for segmenting and cascading the received service data. , confirmation, retransmission processing.

The access node according to claim 10, further comprising:

An interface module, configured to: when the external network is a cellular network, encapsulate the service data sent by the RLC layer processing module, the service signaling sent by the RRC layer, and send the information to the cellular network; and send the received cellular network The service data is parsed and transmitted to the RLC layer processing module, and the service signaling sent by the received cellular network is parsed and transmitted to the RRC layer processing module.

The access node according to claim 11, wherein the interface module is specifically configured to: implement radio bearer management, context management, and perform data encapsulation on the signal according to the selected encapsulation protocol; The fixed encapsulation protocol makes one or the combination of the following modifications to the standard protocol used by the cellular network S1 interface:

Cancel the switch function, cancel the paging function, cancel the code division multiple access CDMA2000 tunnel function, cancel the positioning function, cancel the overload balance function.

The access node according to claim 1, wherein the radio frequency module is further configured to: after the RLC layer processing module establishes a communication connection with the external network, broadcast the access configuration information of the external network.

The access node according to any one of claims 1 to 13, wherein the access node is disposed in a base station of a cellular network system, and shares a physical layer processing module and an RLC layer processing module with the base station.

15. A data service terminal, comprising:

The data service terminal according to claim 15, further comprising:

The data service terminal according to claim 16, wherein the physical layer processing module performs the following functions on the physical layer of the LTE protocol standard when encoding, decoding, and demodulating the service data and the service signaling. One or a combination:

The data service terminal according to claim 16, wherein the physical layer processing module is further configured to:

Searching, by the radio frequency module, a synchronization signal of the access node, and establishing synchronization with the access node;

Obtaining access configuration information of an external network broadcast by the access node, and establishing a wireless link connection with the access node.

The data service terminal according to claim 16, further comprising:

The data service terminal according to claim 19, wherein the MAC layer processing module uses the same packet structure as that defined by the existing LTE protocol.

The data service terminal according to claim 19, wherein the MAC layer processing module controls the MAC of the LTE protocol standard when performing access control, scheduling control, and transmission control on the service data and the service signaling. Layers modify one or a combination of the following features:

The data service terminal according to claim 19, further comprising:

The data service terminal according to claim 22, wherein the RRC layer processing module modifies one or a combination of the following functions to the RRC layer of the LTE protocol standard during radio link control and radio resource management:

Reduce the network attached storage NAS signaling processing process, the process of randomized access, the process of centralized access control, the information broadcast process of the system, the process of transmitting and receiving information of the system, the process of measuring the signal of the cell, and reducing the reporting The configuration information, the paging information of the upper 4 减少, the inter-RAT switching function, and the MBMS function of the multimedia broadcast multicast service are removed.

The data service terminal according to claim 22, further comprising:

The radio link control protocol RLC layer processing module performs service data interaction with the MAC layer processing module for segmenting, cascading, confirming, and retransmitting the received service data.

The data service terminal according to claim 24, further comprising:

An application layer module is configured to present service data carried by the service data to a user.

The data service terminal according to any one of claims 15-25, wherein the data service terminal is disposed in a mobile terminal suitable for a cellular network, and shares a physical layer processing module and an RLC layer processing module with the mobile terminal. .

27. A wireless data service access system, comprising: an access node and a data service terminal; The access node is configured to perform service data and service signaling interaction with the data service terminal through the wireless air interface after receiving the wireless data service access request initiated by the data service terminal; and externally providing the wireless data service service through the network port The network performs service data and service signaling interaction, and implements the data service terminal to access the external network;

The system of claim 27, wherein the access node is further configured to:

Establishing a communication connection with the external network and broadcasting the access configuration information of the external network, specifically including:

When the external network is a cellular network, after establishing a communication connection with the cellular network, acquiring the access configuration information of the cellular network, and broadcasting the obtained access configuration information of the cellular network; or

When the external network is an IP-based Internet network and a private network, the signal strength of each frequency point in the environment in which it is located is detected, and the access configuration information is configured and broadcast according to the detected signal strength.

The system of claim 28, wherein the access node specifically includes:

The radio frequency module is configured to: after receiving the wireless data service request initiated by the data service terminal, perform service data and service signaling interaction with the data service terminal through the wireless air interface; and establish a communication connection with the external network in the RLC layer processing module, and broadcast the external Network access configuration information;

The system of claim 29, wherein the access node further comprises:

The physical layer processing module performs service data and service signaling interaction with the radio frequency module, and is used for coding, decoding, and demodulating and processing the received service data and service signaling;

The media access control MAC layer processing module performs service data and service signaling interaction with the physical layer processing module, and is used for performing access control, scheduling control, and transmission control on the received service data and service signaling;

a radio resource control protocol RRC layer processing module embedded in the MAC layer processing module, configured to perform service signaling interaction with the MAC layer processing module to implement radio link control and radio resource management;

The RLC layer processing module performs service data interaction with the MAC layer processing module, and is also used for segmenting, cascading, confirming, and retransmitting the received service data.

The system of claim 30, wherein the access node further comprises:

The system of claim 28, wherein the data service terminal is further configured to: Searching for a synchronization signal of the access node to establish synchronization with the access node;

The system according to claim 32, wherein the data service terminal specifically includes: a radio frequency module, configured to establish a radio link connection with the access node, and initiate the connection to the access node The wireless data service access request accesses the external network through the access node; and performs service data and service signaling interaction with the access node through the wireless air interface.

The system of claim 33, wherein the data service terminal further comprises: a physical layer processing module, performing service data and service signaling interaction with the radio frequency module, for receiving the received service Data and service signaling are coded, decoded, and demodulated;

The RLC layer processing module performs service data interaction with the MAC layer processing module, and is also used for segmenting, cascading, confirming, and retransmitting the received service data;

The system according to claim 33, wherein the physical layer processing module is further configured to: search for a synchronization signal of the access node by using the radio frequency module, and establish synchronization with the access node; Obtaining access configuration information of an external network broadcast by the access node, and establishing a wireless link connection with the access node.

36. The system of claim 28, further comprising: an access node gateway;

The access node establishes a communication connection with an external network through the access node gateway;

The access node gateway is configured to: when the external network is a cellular network, receive the service data and/or service signaling sent by the access node to be converted into a data format recognizable by the cellular network interface, and send the data format to the cellular network.

The system of claim 36, wherein the access node gateway comprises: an interface module, configured to receive service data and/or service signaling sent by the access node;

The system according to any one of claims 28 to 37, wherein the data service terminal is further configured to: access the external network by using a cellular network mode;

When the cellular network mode is used to access the external network, when the self-service data transmission rate falls below a set rate threshold, the synchronization signal of the access node in the surrounding environment is searched; Establishing a wireless link connection with the access node according to the searched synchronization signal, and switching from accessing the external network by using the cellular network mode to accessing the external network by using the access node.

39. An access node gateway, comprising:

40. A method for accessing a wireless data service, comprising:

The method of claim 40, further comprising: before accepting the wireless data service access request initiated by the data service terminal, the method further comprising:

The access node establishes a communication connection with the external network, and broadcasts the access configuration information of the external network; the access node accepts the wireless data service access request initiated by the data service terminal according to the obtained access configuration information.

The method of claim 41, wherein the access node establishes a communication connection with the external network, and broadcasts the access configuration information of the external network, specifically:

When the external network is a cellular network, the access node establishes a communication connection with the cellular network, acquires the access configuration information of the cellular network, and broadcasts the acquired access configuration of the cellular network. Information; or when the external network is an IP-based Internet network and a private network, the access node detects signal strength of each frequency point in its own environment, configures the access configuration information according to the detected signal strength, and broadcasts .

The method of claim 41, wherein the data service terminal initiates the wireless data service access request according to the obtained access configuration information, which specifically includes:

The data service terminal searches for the synchronization signal of the access node, and establishes synchronization with the access node; the data service terminal acquires access configuration information of the external network broadcast by the access node, and requests and connects the The ingress node establishes a wireless link connection.

44. The method according to claim 40, wherein the process of the service data interaction between the access node and the data service terminal comprises:

The access node or the service data terminal receives the service data by using the radio frequency module included in the access node;

The service data is sequentially provided to the physical layer processing module, the MAC layer processing module processing, and the RLC layer processing module processing included in the processing;

The RLC layer processing module sequentially supplies the processed service data to the MAC layer processing module for processing, and the physical layer After the processing module processes, it is sent to the radio frequency module for transmission.

The method according to claim 40, wherein the process of the service signaling interaction between the access node and the data service terminal comprises:

The access node or the service data terminal receives the service signaling by using the radio frequency module included in the access node;

And the service signaling is sequentially provided to the physical layer processing module included in the MAC layer processing module, and is processed by the RRC layer processing module embedded in the MAC layer processing module;

The RRC layer processing module provides the processed service signaling to the processing of the MAC layer processing module and the processing by the physical layer processing module, and then sends the processed service signaling to the radio frequency module for transmission.

The method of claim 40, wherein when the external network is a cellular network, accessing the data service terminal to the external network, specifically: the data service terminal is accessed by the access node gateway Access to the external network.

The method of claim 46, wherein the accessing the data service terminal to the external network by using the access node gateway includes:

The interface module included in the access node encapsulates service data and/or service signaling, and sends the data to the access node gateway.

The access node gateway converts the service data and/or service signaling into a data format recognizable by the cellular network interface and sends the data format to the cellular network.

48. The method of any of claims 40-47, further comprising:

When the data transmission rate of the wireless data service of the service data terminal accessing the external network by using the cellular network mode falls below a set rate threshold, the data service terminal searches for a synchronization signal of the access node in the surrounding environment;

Establishing a wireless link connection with the access node according to the searched synchronization signal, and accessing from the use of the cellular network mode to the external network to access the external network through the access node.