CN102300276B - Method for realizing automatic switch between time division-synchronization code multiple access (TD-SCDMA) cellular network and wireless local area network in heterogeneous network - Google Patents
Method for realizing automatic switch between time division-synchronization code multiple access (TD-SCDMA) cellular network and wireless local area network in heterogeneous network Download PDFInfo
- Publication number
- CN102300276B CN102300276B CN 201110271682 CN201110271682A CN102300276B CN 102300276 B CN102300276 B CN 102300276B CN 201110271682 CN201110271682 CN 201110271682 CN 201110271682 A CN201110271682 A CN 201110271682A CN 102300276 B CN102300276 B CN 102300276B
- Authority
- CN
- China
- Prior art keywords
- network
- terminal
- wireless
- local area
- wireless local
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000001413 cellular effect Effects 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000001514 detection method Methods 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims description 9
- 230000004044 response Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000013139 quantization Methods 0.000 claims description 8
- 238000013507 mapping Methods 0.000 claims description 5
- 238000013461 design Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 2
- 108700026140 MAC combination Proteins 0.000 claims 1
- 238000012938 design process Methods 0.000 claims 1
- 238000011897 real-time detection Methods 0.000 abstract 2
- 238000004886 process control Methods 0.000 abstract 1
- 230000006854 communication Effects 0.000 description 18
- 238000004891 communication Methods 0.000 description 15
- 238000012544 monitoring process Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 3
- 230000006855 networking Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
本发明提出了一种异构网中实现TD-SCDMA蜂窝网与无线局域网之间自动切换的方法，此方法是在原有网络的基础上，对无线终端、蜂窝基站和无线接入点做简单固件升级，仅需对两种网络中的部分帧重新设计，并通过一定的流程控制实现两种网络之间的自动切换。首先，通过对两种网络信号强度的实时检测，判断终端所在区域的网络覆盖情况，确定终端所在小区是否有可用网络。其次，通过对两个网络频带资源剩余量的实时检测，判断各自网络的资源利用情况，确定网络能否为终端提供可用信道。最后，终端综合以上检测结果，自动选择可用网络接入。
The present invention proposes a method for automatically switching between TD-SCDMA cellular network and wireless local area network in a heterogeneous network. This method is based on the original network, and performs simple firmware for wireless terminals, cellular base stations and wireless access points. For the upgrade, it only needs to redesign part of the frames in the two networks, and realize automatic switching between the two networks through certain process control. First, through real-time detection of the signal strength of the two networks, the network coverage of the area where the terminal is located is judged to determine whether there is an available network in the cell where the terminal is located. Secondly, through the real-time detection of the remaining resources of the frequency bands of the two networks, the resource utilization of the respective networks is judged to determine whether the networks can provide available channels for the terminal. Finally, the terminal automatically selects available network access based on the above detection results.
Description
Realize in a kind of heterogeneous network of technical field that the method that automaticallyes switch between TD-SCDMA Cellular Networks and the WLAN (wireless local area network) belongs to the cordless communication network technical field, specifically, relate to the design of frame format under two kinds of different network protocol of Cellular Networks, WLAN (wireless local area network) and Cellular Networks and WLAN (wireless local area network).
Background technology
In wireless communication field, Cellular Networks and WLAN (wireless local area network) are two kinds of wireless communication network of now main flow, development along with wireless communication technology, the data volume that the user produces in communication process increases sharply, the requirement of ability of data processing is also more and more higher, and in the cordless communication network of reality, facing such subject matter: the area coverage of Cellular Networks is wider, but its data throughput is lower; And its data throughput is very high in WLAN (wireless local area network), but its coverage is limited.Nowadays, although the development of Cellular Networks and wireless local area network technology is relative ripe, because the development of these two kinds of wireless technologys is relatively independent, so that do not realize between them merging well.At present a large amount of uses of multimode, smart mobile phone, have access to larger facilitation to merging honeycomb access and WLAN (wireless local area network) on the hand-held mobile terminal, but most of terminal also is based on the access that a kind of manual mode is switched two kinds of signals, does not have the handed over service of adaptive transparent mode.
In order to overcome this drawback in the cordless communication network, to realizing in the heterogeneous network that the research of merging between the heterogeneous networks seems particularly important, and relevant technology also continues to bring out therewith, realizes that at present the method for switching between the Cellular Networks and WLAN (wireless local area network) in the heterogeneous network mainly contains following two kinds:
First method: its main thought is to realize communicating by letter between Cellular Networks and the WLAN by the configuration WLAN (wireless local area network), and by the Extensible Authentication Protocol (EAP) among the definition RFC-2284, come to the authentication information of portable terminal announcement institute access network.At first by wireless routing in the WLAN (wireless local area network) is configured, but so that portable terminal can receive general capacity information from WLAN (wireless local area network) (WLAN) in extensible authentication procedure, these capacity informations mainly comprise the network information that WLAN had before received from Cellular Networks, secondly by portable terminal these capacity informations of decoding, then sign and in its memory these network informations of storage so that portable terminal can select one of a plurality of different networks to be used for communication easily.This method has mainly illustrated how to go cellular network service by WLAN (wireless local area network), only simply realized the fusion between two kinds of networks, and do not solve the problem of freely switching between two kinds of networks, therefore in the application of reality, also have significant limitation.
Second method: in order to realize the switching of Cellular Networks and WLAN (wireless local area network), at first between terminal and two kinds of networks, set up respectively link separately, then realize two kinds of switchings between the network by certain converting system, converting system mainly comprises: packet data serving node (PDSN), grouping control agent (PCF), couple in router (AR).Realize that the overall system structure of mutually switching between Cellular Networks and the WLAN (wireless local area network) is as follows: terminal is via the base station, linking to each other forms the Cellular Networks link with base station controller (having agency's control function), terminal is via access point (AP), the access route, the grouping control agent links to each other and forms the WLAN (wireless local area network) link, then Cellular Networks and WLAN (wireless local area network) link accessing group data service node in the lump, and packet data serving node is connected with the switching system of internet and other residential quarter again, can make collaborative work between Cellular Networks and the WLAN (wireless local area network) at last, when the terminal use needs Cellular Networks that communication session is provided, packet data serving node links to each other with base station controller, thereby connects the Cellular Networks link.When needing WLAN (wireless local area network) to provide when service packet data serving node will disconnect and being connected of base station controller, set up simultaneously and divide into groups being connected between the control agent, realize switching between Cellular Networks and the WLAN (wireless local area network) with this.Although this kind method has realized freely switching between two kinds of networks, but in network link, add corresponding equipment, not only increased the expense of networking, also increased the complexity of networking, in a single day and in user's use procedure, break down, problem need the personnel of specialty that network is investigated, so that can not in time be solved.
For the existing deficiency of above method, the present invention has proposed to realize the method that automaticallyes switch between the TD-SCDMA Cellular Networks and WLAN (wireless local area network) in the heterogeneous network specially.
Summary of the invention
Typical heterogeneous network distributed model as shown in Figure 1, when the mobile subscriber from the A district to the B district or from the B district during to the A district, the network coverage meeting of user position changes, simultaneously after A district or B district user reach some, because the phenomenon that the deficiency of Internet resources can occur blocking up.For above situation, in order to provide better network service to the user, guarantee user's telecommunication service quality, just need to carry out two kinds of switchings between the network this moment, accesses to select optimum network.Realize in the present invention the automatic switching method between TD-SCDMA Cellular Networks and the WLAN (wireless local area network), its main thought: by the suitable improvement to portable terminal, cellular basestation and WAP (wireless access point), the control frame of newly-increased Gains resources request and response and negotiation flow process realize the automatic switchover between Cellular Networks and the WLAN (wireless local area network).
Link such as Fig. 2 of setting up between terminal equipment and two networks, the description of image the connection procedure between terminal and TD-SCDMA Cellular Networks and the WLAN (wireless local area network).In order to guarantee the steady switching of terminal between network, terminal equipment has been proposed certain requirement, the structured flowchart of its terminal such as Fig. 3, mainly be under the control of processor (CPU), subsystem by Cellular Networks subsystem and WLAN (wireless local area network) is processed the signal of each automatic network, and finish conversion between the different system instruction by handover module, to realize the communication between CPU and two sub-systems.Simultaneously the management frames of Gains resources in the WLAN (wireless local area network) and the broadcast frame structure in the Cellular Networks are defined respectively such as Fig. 5-1, Fig. 6-1, the form of frame mainly is comprised of MAC head and frame entity, wherein the MAC head has mainly comprised some control informations, and the frame entity is only the band resource information of the required transmission of user.
Concrete operation fluid layer such as Fig. 4, at first detected the network signal intensity of position by the terminal equipment signal detection module, thereby the signal that definite position has covered which kind of network and which network is more stable, provides preliminary judgement in order to select suitable network insertion for terminal; Next is the operating position by the band resource of control centre's monitoring network of network, and obtained the band resource surplus of network by the monitoring modular of terminal equipment, judge that take this can network provide available channel as portable terminal, thereby determine which network allows the terminal access.Wherein the obtain manner of WLAN (wireless local area network) band resource surplus is to be sent to wlan network administrative center by the monitoring resource part of local area network (LAN) subsystem in the terminal equipment to obtain network resource request, through network management center Internet resources are monitored backward terminal and send response, after decoding to response, terminal obtains the band resource surplus of network, and be directly to broadcast this monitoring information to community user after by the network control center band resource being monitored, and by the monitoring resource module of Cellular Networks subsystem in the terminal equipment broadcast frame is decoded to obtain the band resource surplus of network in the Cellular Networks system.If the band resource of network is sufficient, then send access request by terminal to network, if net frequency band network inadequate resource, terminal can be to the user report access failure.
This programme can be realized the automatic switchover between TD-SCDMA Cellular Networks and the WLAN (wireless local area network), three large characteristics are arranged, the one, the negotiations process of the definition of the management frames of WLAN terminal Gains resources and terminal and WAP (wireless access point), the 2nd, the frame of base station broadcast Radio Resource design in the Cellular Networks, the 3rd, the mapping method of band resource surplus.The present invention has not only realized the preferentially access of terminal in the Double coverage district, and in the situation that terminal is moved and the network coverage of terminal region changes, also can realize two kinds of quick automatic switching between the network.
Description of drawings
Fig. 1: the distributed model of TD-SCDMA Cellular Networks and WLAN (wireless local area network).
Fig. 2: the practical communication link between portable terminal and the two kinds of networks.
Fig. 3: the structured flowchart of mobile terminal device is 203 more depicted in greater detail among Fig. 2.
Fig. 4: the switching flow of portable terminal between TD-SCDMA Cellular Networks and WLAN (wireless local area network).
Fig. 5-1: WLAN (wireless local area network) is obtained the management frames structure of band resource.
Fig. 5-2: WLAN (wireless local area network) is obtained explaining of key in the management frames of band resource.
Fig. 6-1: be used for to the structure of the protocol Data Unit (PDU) of terminal broadcast message in the Cellular Networks.
Fig. 6-2: be used for explaining to the key of the protocol Data Unit (PDU) of terminal broadcast message in the Cellular Networks.
Fig. 7: the negotiations process of obtaining band resource in the WLAN (wireless local area network) between portable terminal and the WAP (wireless access point).
Embodiment
For can clearer statement implementation detail of the present invention, at first to introduce the relevant parameter that relates to this programme, and be described in detail as follows:
A
w, A
tRepresent respectively the intensity that network transmits among WLAN and the TD-SCDMA, that is to say the amplitude of signal.
α, β represent respectively the minimum threshold of signal in WLAN and the TD-SCDMA network, it namely is the minimum signal strength that can guarantee the required emission of terminal use's proper communication network, in case can cause the signal to noise ratio of network excessively low less than this numerical value, thereby affect user's communication quality.
C
w, C
tRepresent respectively band resource amount total in WLAN and the TD-SCDMA network.
M
w, M
tRepresent respectively in WLAN and the TD-SCDMA network by the shared band resource amount of terminal use.
R
w, R
tRepresent respectively the required band resource amount in practical communication of each user in WLAN and the TD-SCDMA network.
f
w, f
tThe minimum threshold that represents respectively WLAN and TD-SCDMA network intermediate frequency band resources, namely be the necessary bandwidth degree that can satisfy terminal use's proper communication, only have when the frequency bandwidth in the network during greater than minimum threshold network just have enough bandwidth resources to come to distribute corresponding channel for portable terminal.
Band resource surplus in WLAN and TD-SCDMA network can be expressed as respectively: C
w-M
w, C
t-M
t
For the ease of communicating by letter between terminal and the network, we should represent the band resource surplus with binary form, therefore also need the band resource surplus is quantized and encodes:
1. quantize: suppose that it is d that WLAN and GSM network adopt respectively spacing
w, d
tUniform quantization, d wherein
w, d
tThe minimum quantization unit of expression band resource, the shared band resource of each user is its integral multiple.Can get thus, quantized interval number (quantized level) is respectively: m=(C
w-M
w)/d
w, n=(C
t-M
t)/d
tWherein m, n=0,1,2......
2. encode: adopt natural binary code that m, n are encoded
The required bit of encoding:
Take IEEE 802.11g wireless local area network (WLAN) system as example: the total available band resource of assumed wireless LAN system is as 54Mbps, the band resource that the user has taken in this WLAN (wireless local area network) is 40Mbps, and the taken amount spacing is 0.5Mbps, at this moment, typical IEEE 802.11g WLAN (wireless local area network) band resource mapping relations such as table 1:
Table 1
The present invention mainly is the research of terminal being switched between honeycomb and WLAN (wireless local area network) on the basis of heterogeneous network, model heterogeneous network model such as Fig. 1, wherein the A district represents single net (Cellular Networks) area of coverage, two net (Cellular Networks and the WLAN (wireless local area network)) areas of coverage of B district expression.Next sets up the link between terminal and Cellular Networks and the WLAN (wireless local area network), such as Fig. 2, wherein 201 the expression Cellular Networks base station and base station control center, the WAP (wireless access point) of 202 expression WLAN, 201,202 mainly use and reception and wireless signal emission, realize the transfer of data between portable terminal and two networks, simultaneously the information of each automatic network is carried out control and management, the mobile terminal device of 203 expression intelligence.
The structure of terminal equipment 203 such as Fig. 3 now are described in detail as follows: terminal equipment mainly comprises 5 modules in mobile: Cellular Networks subsystem, wireless local net system, switching device (307), processor (308), memory (309).Wherein Cellular Networks subsystem and wireless local net system can be divided into again: antenna part (301,302), signal detection module (303,304), Internet resources monitoring modular (305,306).The major function of each several part: 301,302 sending and receivings of being responsible for respectively portable terminal signal in Cellular Networks and WLAN (wireless local area network); 303,304 signal strength signal intensities that are respectively applied to detect Cellular Networks and WLAN (wireless local area network); 305, the 306 band resource surpluses of being responsible for respectively obtaining Cellular Networks and WLAN, the simultaneously shared band resource amount of real-time monitoring terminal user self; The 307 main IP that are responsible for solve simultaneously the incompatibility problem of two kinds of procotols, thereby guarantee the steady switching of portable terminal between TD-SCDMA and WLAN to the mapping between the IMSI (international member identification code).And processor called and produced in memory 309 main responsible storage terminals and the networking communication process data and instruction.
The frame structure of WLAN (wireless local area network) and TD-SCDMA Cellular Networks such as Fig. 5-1, Fig. 6-1 now specifically describe as follows:
The frame structure of WLAN (wireless local area network) mainly comprises the MAC head of regular length and the mac frame entity of variable-length, wherein, the MAC head comprises again frame control domain and address field, frame control domain (1 byte) comprises protocol version subdomain (2 bit), frame type subdomain (2 bit) and frame subtype subdomain (4 bit), and address field (8 byte) comprises source address (4 byte) and destination address (4 byte).The mac frame entity is made of unit identity code (1 byte), message length subdomain (1 byte) and information subdomain (variable-length), and the length of information subdomain is determined by the quantification progression of radio band resource mapping.In the present invention specific definition such as Fig. 5-2 of two kinds of frames of involved wireless office net.
The broadcast frame structure of TD-SCDMA Cellular Networks mainly comprises MAC head and the variable-length Medium Access Control (MAC) Service Data Unit of regular length.The MAC head comprises protocol type (2 bit) and channel type (1 byte).Medium Access Control (MAC) Service Data Unit has mainly reflected the operating position of the band resource of cellular network, Medium Access Control (MAC) Service Data Unit comprises that information type identifier (2 bit), message length (1 byte) and information unit (variable-length) consist of, and the length of information unit also quantizes progression by frequency band and determines.The specific definition of the Cellular Networks broadcast frame that relates in the present invention such as Fig. 6-2.
This programme implementation step such as Fig. 4 now are described in detail as follows in conjunction with Fig. 3:
Step 401: preferentially receive wireless lan signal by 302 of terminal, and signal is sent into terminal 304, through the sampling of signal being adjudicated to obtain the signal strength signal intensity A of WLAN (wireless local area network)
w, and signal strength signal intensity is sent to processor 308 processes, then turn to step 403.
Step 403: 304 signal strength signal intensities that detect are directly sent into processor 308 judge signal strength signal intensity A
wWith the size of threshold alpha, work as A
wDirectly turn to step 402 during＜α; Work as A
wTurn to step 405 during＞α.
Step 405: the resource residual amount of consulting to obtain WLAN by the frame between terminal and the WLAN (wireless local area network), detailed process such as Fig. 7: at first obtain network bands resource request frame by 306 control centres to WLAN (wireless local area network) (wireless router) transmission of terminal, come simultaneously the band resource of monitoring wireless local area network (LAN) by wireless router, then come the type of judgment frame according to the control domain of claim frame by wireless router, and according to the address that address field obtains terminal equipment, send band resource to terminal 306 afterwards and obtain response frame.306 according to the information unit in the response frame, obtains the surplus C of the band resource of WLAN (wireless local area network) by decoding
w-M
w, and this direct information processor 308 processed, with rear steering step 407.
Step 407: the return value according to 306, judge band resource surplus C by processor 308
w-M
wWith f
wSize, work as C
w-M
w＞f
wThe time, from memory 309, transfer and send the access request instruction to WLAN (wireless local area network) by terminal handler 308, authentication, the backward portable terminal of authentication through wireless router send and reply permission response, this moment, terminal was set up related with WLAN (wireless local area network), terminal success accessing WLAN, and in the process of portable terminal and wireless LAN communication, simultaneously by the 306 actual band resource amount R that take that detect and send to WLAN (wireless local area network) the user
w, judge C by WLAN (wireless local area network) control centre
w-M
wWith R
wSize, work as C
w-M
w＞R
wThe time, keeping connecting, no person's wireless router sends the related notice of cancellation to terminal, and the failure of terminal accessing WLAN turns to step 402; Work as C
w-M
w＜f
wThe time, directly turn to step 402.
Step 402: receive the signal of Cellular Networks by 301 of terminal, through obtaining the Cellular Networks signal strength signal intensity A of residential quarter, place after 303 pairs of Cellular Networks signal samplings judgements
t, and this numerical value is transferred to processor 308 processes, turn to simultaneously step 404.
Step 404: the signal strength signal intensity A that is judged Cellular Networks by processor 308
tWith the size of minimum threshold β, work as A
tDuring＜β, illustrate that cellular network signals is not enough, access failure (show that residential quarter, portable terminal place does not have suitable network for the user this moment); Work as A
tDuring＞β, turn to step 406.
Step 406: cellular network is broadcasted the network information (band resource that refers in particular to this subzone network utilizes situation) of this residential quarter by the base station to the mobile phone users in the residential quarter, obtains the band resource surplus C of cellular network after 305 pairs of broadcast message decodings by terminal after antenna 301 receives the Cellular Networks signal
t-M
t, and with these information sending processor 308 processing, and turn to step 408.Wherein the detection of the band resource of Cellular Networks is finished by base station and base station controller, at first base station controller is configured to follow the tracks of the statistic that all are mapped to radio bearer BO (buffer area takies) value on a certain transmission channel by RRC (Radio Resource control) to MAC, wherein the BO value can be used for reflecting the situation that takies of wireless transmission channel, that is to say cellular network band resource utilize situation; Secondly in each TTI (Transmission Time Interval), the MAC layer of base station controller all can utilize MAC-Data-REQ primitive to receive a BO value from each RLC (Radio Link control) entity; Utilize primitive CMAC-Measure-REQ to obtain the measurement report of MAC to the MAC entity requests by RRC (Radio Resource control) more at last, and by the base station this report is broadcast to community user, finish monitoring to the Cellular Networks band resource with this.
Step 408: compare C by processor 308
t-M
tWith f
tSize, work as C
t-M
t＜f
tThe time, access failure; Work as C
t-M
t＞f
tThe time, from 309, transfer and send the access request instruction to base station controller by processor 308, send and reply the approval response instruction through base station controller authentication, the backward terminal of authentication, this moment, mobile terminal device and Cellular Networks connected, and namely terminal equipment is in holding state; After this by 305 real-time monitoring terminal users of terminal actual band resource occupancy R in communication process
t, and these data are informed base station controller, judge C by base station controller
t-M
tWith R
tSize, work as C
t-M
t＞R
tThe time, keep being connected between terminal and the Cellular Networks; Work as C
t-M
t＜R
tThe time, the resource of cellular network can't satisfy user's demand, and Cellular Networks control centre cancellation this moment is connected with terminal, the failure of terminal access this moment Cellular Networks.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110271682 CN102300276B (en) | 2011-09-14 | 2011-09-14 | Method for realizing automatic switch between time division-synchronization code multiple access (TD-SCDMA) cellular network and wireless local area network in heterogeneous network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110271682 CN102300276B (en) | 2011-09-14 | 2011-09-14 | Method for realizing automatic switch between time division-synchronization code multiple access (TD-SCDMA) cellular network and wireless local area network in heterogeneous network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102300276A CN102300276A (en) | 2011-12-28 |
| CN102300276B true CN102300276B (en) | 2013-10-30 |
Family
ID=45360368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110271682 Expired - Fee Related CN102300276B (en) | 2011-09-14 | 2011-09-14 | Method for realizing automatic switch between time division-synchronization code multiple access (TD-SCDMA) cellular network and wireless local area network in heterogeneous network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102300276B (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103596230A (en) * | 2012-08-14 | 2014-02-19 | 中国电信股份有限公司 | A network switching method and apparatus based on network load control |
| CN104584636A (en) * | 2012-08-21 | 2015-04-29 | 诺基亚公司 | Method and apparatus for wireless communication in a heterogeneous network |
| CN102843302B (en) * | 2012-09-17 | 2015-02-25 | 福建星网锐捷网络有限公司 | Terminal access method and device |
| CN105144789B (en) * | 2013-01-17 | 2019-06-18 | 英特尔Ip公司 | Apparatus, system, and method for communicating non-cellular access network information over a cellular network |
| CN103259592B (en) * | 2013-05-24 | 2016-05-11 | 江苏大学 | A kind of visible light communication net and WLAN fusion method |
| CN104780553A (en) * | 2014-01-10 | 2015-07-15 | 中兴通讯股份有限公司 | Wireless access point access communication terminal management method, wireless access point access communication terminal management device and wireless access terminal |
| US10341929B2 (en) * | 2014-01-14 | 2019-07-02 | Google Llc | PSTN / VoIP communication system and method |
| JP6483797B2 (en) * | 2014-11-10 | 2019-03-13 | バイエリシエ・モトーレンウエルケ・アクチエンゲゼルシヤフト | Method and apparatus for receiving broadcast services including switching between digital audio broadcast (DAB) transmission and enhanced multimedia broadcast / multicast (EMBMS) transmission |
| CN105050123A (en) * | 2015-08-31 | 2015-11-11 | 宇龙计算机通信科技(深圳)有限公司 | Load control method for wireless network and terminal |
| CN105338474A (en) * | 2015-09-30 | 2016-02-17 | 刘运成 | Cellular/WLAN heterogeneous network data fusion method and device |
| CN105873086A (en) * | 2016-06-16 | 2016-08-17 | 中国民用航空总局第二研究所 | Airport surface wireless communication system and wireless terminal |
| CN108271225B (en) * | 2017-01-03 | 2022-06-07 | 中兴通讯股份有限公司 | Network acquisition method and device |
| CN106888445A (en) * | 2017-03-01 | 2017-06-23 | 西安交通大学城市学院 | It is a kind of to carry out the blind method and system of wireless coverage speech business benefit using WIFI network |
| CN111586725B (en) * | 2019-02-15 | 2022-04-22 | 华为技术有限公司 | Access point updating method and access point |
| CN112702212B (en) * | 2021-01-13 | 2023-07-28 | 深圳市云天智能通讯有限公司 | Multi-network mixed use communication system and terminal equipment |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101420786A (en) * | 2007-10-22 | 2009-04-29 | 华为技术有限公司 | Implementing method and device for multi-mode terminal coexistence |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7899006B2 (en) * | 2006-12-05 | 2011-03-01 | Zebra Enterprise Solutions Corp. | Location system for wireless local area network (WLAN) using RSSI and time difference of arrival (TDOA) processing |
| EP2355581B1 (en) * | 2010-01-25 | 2016-01-27 | BlackBerry Limited | Handling voice calls on a dual-mode wireless mobile communication device |
-
2011
- 2011-09-14 CN CN 201110271682 patent/CN102300276B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101420786A (en) * | 2007-10-22 | 2009-04-29 | 华为技术有限公司 | Implementing method and device for multi-mode terminal coexistence |
Non-Patent Citations (3)
| Title |
|---|
| 周建明.无线异构网络的垂直切换.《通信技术》.2011,第44卷(第5期),第97页至第99页. |
| 无线异构网络的垂直切换;周建明;《通信技术》;20110510;第44卷(第5期);第97页至第99页 * |
| 肖宁,王琼.一种TD-SCDMA与WLAN融合体系结构的设计.《重庆邮电学院学报(自然科学版)》.2005,第17卷(第6期),第667页至第670页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102300276A (en) | 2011-12-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102300276B (en) | Method for realizing automatic switch between time division-synchronization code multiple access (TD-SCDMA) cellular network and wireless local area network in heterogeneous network | |
| JP5166528B2 (en) | Communication apparatus and data transmission method | |
| CN100446581C (en) | A method for realizing load balancing system in wireless local area network | |
| KR101682266B1 (en) | Coexistence of multiple wireless networks | |
| CN103517323B (en) | The data transmission method of Wireless Heterogeneous Networks, shunting device, base station equipment | |
| US20200196182A1 (en) | Apparatus and method for providing service network in wireless communication system | |
| KR20180127967A (en) | Method and apparatus for establishing a radio resource control connection | |
| US20160227479A1 (en) | Method and corresponding apparatus and system for cooperative processing of wireless data | |
| CN103442399B (en) | Method for switching network, network switched system and terminal | |
| WO2017114097A1 (en) | Wireless access point configuration method and system, base station and user terminal thereof | |
| US10631215B2 (en) | Method and apparatus for communicating with a wireless local area network in a mobile communication system | |
| WO2012006832A1 (en) | Terminal mode processing method, network access method and base station | |
| US20170048151A1 (en) | Device and method for transmitting/receiving data in wireless communication system | |
| CN105493573A (en) | Method for enhanced access selection by a user equipment in a cellular telecommunications network, telecommunications network, and system for enhanced access selection of a user equipment | |
| CN110719227B (en) | Data transmission method and related device | |
| US20140349650A1 (en) | Temporarily Serving a User Equipment by a Second Cell | |
| US20160227534A1 (en) | Method and device for receiving multicast frame in wireless lan | |
| CN113271561B (en) | Method and device for determining communication mode and storage medium | |
| CN102724737B (en) | Multimode network adjacent area binding method, Apparatus and system | |
| CN106792983A (en) | A kind of connection control method and system | |
| WO2024183673A1 (en) | Beam management method, device, and storage medium | |
| US8265636B2 (en) | Method and apparatus for managing cells of multi-mode portable terminal | |
| JP6781272B2 (en) | Information downlink transmission method, data transmission method, equipment and system | |
| CN119923906A (en) | Wireless communication method, device, equipment, storage medium and program product | |
| Antonopoulos et al. | Green-T: Enabling techniques for energy efficient mobile terminals |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151117 Address after: 518053 Guangdong city of Shenzhen province Nanshan District overseas Chinese town in Eastern Industrial Zone H3 building 2-4 building Patentee after: Shenzhen Tinno Wireless Technology Co., Ltd. Address before: 400044 Chongqing street, Shapingba District, No. 174 Patentee before: Chongqing University |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131030 Termination date: 20190914 |