CN103731939A - Dual-network mobile terminal - Google Patents
Dual-network mobile terminal Download PDFInfo
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- CN103731939A CN103731939A CN201310753991.6A CN201310753991A CN103731939A CN 103731939 A CN103731939 A CN 103731939A CN 201310753991 A CN201310753991 A CN 201310753991A CN 103731939 A CN103731939 A CN 103731939A
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Abstract
The invention discloses a dual-network mobile terminal. The dual-network mobile terminal comprises a base station power detection module, a power control module and a communication module, wherein the base station power detection module, the power control module and the communication module are sequentially connected through circuits. By means of the dual-network mobile terminal, the problem that networks are frequently reselected and switched when the mobile terminal is located at the edge of a community is solved, communication can be prevented from being terminated when the mobile terminal is switched between the TD-CDMA network and the GSM network, and the call drop problem can be prevented.
Description
Technical field
The present invention relates to electronic communication field, relate in particular to a kind of can be at two net mobile terminals of TD-CDMA network and GSM network system operation.
Background technology
Current communication network is intersected to cover by different communication networks and forms, and the network that mobile terminal is covered to Hui Duigai community, another communication cell by a communication cell detects, and then carries out cell reselection and community switching.
At present the switchover policy of mobile terminal in communication network is: in the situation that taking into account user's impression, make TD-CDMA user especially data service use as far as possible TD-CDMA Internet resources.That is the TD-CDMA Internet resources of, first applying current area carry out signal transmission; While not meeting communication requirement as the TD-CDMA Internet resources of current area, whether the TD-CDMA network that detects neighbor cell can meet the communication requirement of mobile terminal, as met, mobile terminal is switched to and utilizes the GSM network of current area to communicate.
Simultaneously, also there is following problem in the operation that TD-CDMA network and GSM network switch mutually: on the one hand, in the process that mobile terminal switches between TD-CDMA network and GSM network, communication is temporarily terminated, now this mobile terminal cannot called success, bring inconvenience to this mobile phone users; On the other hand, if mobile terminal when long, also probably causes Special Handle of Drop Question in TD-CDMA network and GSM internetwork switching time, bring inconvenience to the calling and called both sides that conversing; The 3rd, at the edge of the larger TD-CDMA network cell of area, network reselection and switching frequently, had both been unfavorable for keeping the continuity of Terminal Service, had also increased the Signalling exchange that network interoperability brings simultaneously, had strengthened network signal load.
Summary of the invention
In order to address the above problem, the present invention proposes a kind of two net mobile terminal.
Provided by the present invention pair of net mobile terminal, comprises base station power detection module, power control module and communication module; Described base station power detection module, power control module and communication module successively circuit are connected.
Described power control module comprises open Loop Power control unit and the close-loop power control unit that circuit connects successively; Described open Loop Power control unit comprises path loss biasing computing circuit, power summation operation circuit and coding gain computing circuit; Described path loss biasing computing circuit, power summation operation circuit and coding gain computing circuit are connected with the circuit of output terminal of described base station power detection module respectively; Described close-loop power control unit comprises that TPC extracts circuit, power symbolic operation circuit and transmitting power computing circuit; Described TPC extracts the circuit connection successively of circuit, power symbolic operation circuit and transmitting power computing circuit; Described communication module comprises duplexer, balanced-to-unbalanced transformer, low noise amplifier, the first multiplier, the second multiplier, PGA chip, decoder and power amplifier, the first mixting circuit and the second mixting circuit; Described duplexer, balanced-to-unbalanced transformer, the first multiplier, the first mixting circuit, PGA chip successively downstream circuitry connect; Described low noise amplifier, the second mixting circuit, the second multiplier, power amplifier and duplexer successively upstream circuitry are connected; Described voltage-controlled oscillator circuit is connected between described the first multiplier and the second multiplier.
Provided by the present invention pair of net mobile terminal, solve mobile terminal and when cell edge, carried out frequent network reselection and switching, can prevent from communicating by letter and being terminated in process that mobile terminal switches between TD-CDMA network and GSM network, prevent the generation of Special Handle of Drop Question also.
Accompanying drawing explanation
Fig. 1 is the two net mobile terminal module schematic diagrames described in the embodiment of the present invention;
Fig. 2 further shows the structure of the power control module shown in Fig. 1;
Fig. 3 further shows the communication module circuit structure shown in Fig. 1.
Embodiment
For making object, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, the present embodiment provides a kind of two net mobile terminal, comprises base station power detection module 1, power control module 2 and communication module 3; Described base station power detection module 1, power control module 2 and communication module 3 successively circuit are connected.It will be appreciated by those skilled in the art that, described base station power detection module 1 is for measuring the signal power of Serving cell and neighbor cell, and testing result is sent to described power control module 2, described power control module 2 is for receiving the testing result of described power detection module and testing result being carried out to computing, according to operation result, produce control signal and this control signal is sent to described communication module 3, described communication module 3 is for carrying out voice or data link communication according to described control signal.
As shown in Figure 2, described power control module 2 comprises open Loop Power control unit and the close-loop power control unit that circuit connects successively.It will be understood by those skilled in the art that described open Loop Power control unit is for estimating up link according to the disturbed condition of down link; Described close-loop power control unit carries out closed-loop control for calculating power control symbol according to the feedback of receiving terminal.
Described open Loop Power control unit comprises path loss biasing computing circuit, power summation operation circuit and coding gain computing circuit; Described path loss biasing computing circuit, power summation operation circuit and coding gain computing circuit are connected with the circuit of output terminal of described base station power detection module 1 respectively.It will be appreciated by those skilled in the art that, described base station power detection module 1 by testing result by RSCP(Received Signal Code Power) value sends to described footpath loss biasing computing circuit circuit to carry out computing, thereby calculates the loss of wireless link; For there are multiple CCTrCH(Coded Composite Transport Channel at ascending time slot in described power summation operation circuit) time calculate respective channel power and; Described coding gain computing circuit is for calculation code portfolio premium value
for system provides due to the indication that adopts the rear systematic function of coding to promote.
Described close-loop power control unit comprises that TPC extracts circuit, power symbolic operation circuit and transmitting power computing circuit; Described TPC extracts the circuit connection successively of circuit, power symbolic operation circuit and transmitting power computing circuit.It will be understood by those skilled in the art that described TPC extracts circuit for descending time slot TPC is mapped to ascending time slot; Described power symbolic operation circuit is for passing through to calculate the closed-loop power control symbol of each ascending time slot; Described transmitting power computing circuit is used for judging the positive and negative of described closed-loop power control symbol, thereby adjusts the transmitting power of ascending time slot in next subframe according to the step of default (step).
As shown in Figure 3, described communication module 3 comprises duplexer 301, balanced-to-unbalanced transformer 302, low noise amplifier 303, the first multiplier 304, the second multiplier 309, PGA chip 306, decoder 307 and power amplifier 310, the first mixting circuit 305 and the second mixting circuit 308; Described duplexer 301, balanced-to-unbalanced transformer 302, the first multiplier 304, the first mixting circuit 305, PGA chip 306 successively downstream circuitry connect; Described low noise amplifier 303, the second mixting circuit 308, the second multiplier 309, power amplifier 310 are connected with duplexer 301 successively upstream circuitry; Described voltage controlled oscillator 311 circuit are connected between described the first multiplier 304 and the second multiplier 309.It will be appreciated by those skilled in the art that, after base station signal is obtained by antenna, through duplexer 301, isolate available signal, balanced-to-unbalanced transformer 302 is transformed to balance input by signal, arrives terminal signaling receive-transmit system, then complete inner a series of signal processing by low noise amplifier 303 one-level fixed gains (general gain can be designed to 5dB), comprise variable gain LNA, mixing, filtering, generates baseband signal after the resume module such as intermediate frequency amplification; During transmitting, terminal signaling is modulated to suitable power amplifier 310 power according to power control algorithm, exports through duplexer 301 by antenna transmission.
Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (5)
1. two net mobile terminals, is characterized in that: comprise base station power detection module (1), power control module (2) and communication module (3); Described base station power detection module (1), power control module (2) and communication module (3) successively circuit are connected.
2. as claimed in claim 1 pair of net mobile terminal, is characterized in that: described power control module (2) comprises open Loop Power control unit and the close-loop power control unit that circuit connects successively.
3. as claimed in claim 2 pair of net mobile terminal, is characterized in that: described open Loop Power control unit comprises path loss biasing computing circuit, power summation operation circuit and coding gain computing circuit; Described path loss biasing computing circuit, power summation operation circuit and coding gain computing circuit are connected with the circuit of output terminal of described base station power detection module (1) respectively.
4. two net mobile terminals as claimed in claim 2 or claim 3, is characterized in that: described close-loop power control unit comprises that TPC extracts circuit, power symbolic operation circuit and transmitting power computing circuit; Described TPC extracts the circuit connection successively of circuit, power symbolic operation circuit and transmitting power computing circuit.
5. two net mobile terminals as claimed in claim 2 or claim 3, is characterized in that: described communication module (3) comprises duplexer (301), balanced-to-unbalanced transformer (302), low noise amplifier (303), the first multiplier (304), the second multiplier (309), PGA chip (306), decoder (307) and power amplifier (310), the first mixting circuit (305) and the second mixting circuit (308); Described duplexer (301), balanced-to-unbalanced transformer (302), the first multiplier (304), the first mixting circuit (305), PGA chip (306) successively downstream circuitry connect; Described low noise amplifier (303), the second mixting circuit (308), the second multiplier (309), power amplifier (310) and duplexer (301) successively upstream circuitry are connected; Described voltage controlled oscillator (311) circuit is connected between described the first multiplier (304) and the second multiplier (309).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310753991.6A CN103731939A (en) | 2013-12-31 | 2013-12-31 | Dual-network mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310753991.6A CN103731939A (en) | 2013-12-31 | 2013-12-31 | Dual-network mobile terminal |
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| CN103731939A true CN103731939A (en) | 2014-04-16 |
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| CN201310753991.6A Pending CN103731939A (en) | 2013-12-31 | 2013-12-31 | Dual-network mobile terminal |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1350724A (en) * | 1999-05-11 | 2002-05-22 | 高通股份有限公司 | System and method for providing an accurate estimation of received signal interference for use in wireless communications systems |
| CN1512802A (en) * | 2002-12-27 | 2004-07-14 | 皇家飞利浦电子股份有限公司 | Mobile terminal with power control and method |
| CN101010888A (en) * | 2004-08-30 | 2007-08-01 | 摩托罗拉公司 | Method and apparatus for dual mode power control |
-
2013
- 2013-12-31 CN CN201310753991.6A patent/CN103731939A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1350724A (en) * | 1999-05-11 | 2002-05-22 | 高通股份有限公司 | System and method for providing an accurate estimation of received signal interference for use in wireless communications systems |
| CN1512802A (en) * | 2002-12-27 | 2004-07-14 | 皇家飞利浦电子股份有限公司 | Mobile terminal with power control and method |
| CN101010888A (en) * | 2004-08-30 | 2007-08-01 | 摩托罗拉公司 | Method and apparatus for dual mode power control |
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Application publication date: 20140416 |
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| RJ01 | Rejection of invention patent application after publication |