CN112954745B - Wide-narrow dual-mode cluster terminal and mode switching method and device thereof - Google Patents
Wide-narrow dual-mode cluster terminal and mode switching method and device thereof Download PDFInfo
- Publication number
- CN112954745B CN112954745B CN201911254788.8A CN201911254788A CN112954745B CN 112954745 B CN112954745 B CN 112954745B CN 201911254788 A CN201911254788 A CN 201911254788A CN 112954745 B CN112954745 B CN 112954745B
- Authority
- CN
- China
- Prior art keywords
- mode
- cluster
- module
- broadband
- radio frequency
- 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.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/0085—Hand-off measurements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The embodiment of the invention provides a wide-narrow dual-mode cluster terminal and a mode switching method and device thereof. The wide-narrow dual-mode cluster terminal comprises: an antenna; the radio frequency front end module comprises a radio frequency duplexer connected with the antenna; the broadband cluster module is connected with the radio frequency front-end module; the narrowband cluster module is connected with the radio frequency front end module and has the same working frequency band as the broadband cluster module; and the mode selection module is used for determining the working mode of the wide-narrow dual-mode cluster terminal according to the downlink signal strength of the broadband cluster. The embodiment of the invention realizes the wide-narrow dual-mode trunking terminal which has only one main antenna and works in the same frequency band.
Description
Technical Field
The invention belongs to the technical field of trunking communication, and particularly relates to a wide-narrow dual-mode trunking terminal and a mode switching method and device thereof.
Background
The trunking communication system is a mobile communication system for group dispatch command communication, and is mainly applied to the field of professional mobile communication. The system has available channels which can be shared by all users of the system, and has the function of automatically selecting channels, and is a multipurpose and high-efficiency wireless dispatch communication system which shares resources, cost and shared channel equipment and services.
With the development of broadband clusters, the wide-narrow dual-mode terminal is increasingly focused. For a wide-narrow dual-mode terminal, if the frequencies of a narrow band and a wide band are far apart, wide-narrow band dual-pass can be realized through a multi-frequency combiner or an independent antenna. However, if the narrowband and wideband are in the same frequency band or a close distance between frequency bands, such as a professional digital trunking (Professional Digital Trunking, PDT) of 350MHz/800MHz and a long term evolution (Long Term Evolution, LTE) dual mode terminal of 350MHz/800MHz, antenna sharing cannot be achieved through a multi-frequency combiner. If a separate antenna is used, the terminal needs to use a double whip antenna, which is difficult to implement on a handheld terminal.
Therefore, it is necessary to find an implementation scheme of a wide-narrow dual-mode trunking terminal which is suitable for the same-frequency-band operation and has only one main antenna.
Disclosure of Invention
The embodiment of the invention provides a wide-narrow dual-mode cluster terminal and a mode switching method and device thereof.
The technical scheme of the embodiment of the invention is as follows:
a wide-narrow dual-mode cluster terminal includes:
an antenna;
the radio frequency front end module comprises a radio frequency duplexer connected with the antenna;
the broadband cluster module is connected with the radio frequency front-end module;
the narrowband cluster module is connected with the radio frequency front end module and has the same working frequency band as the broadband cluster module;
and the mode selection module is used for determining the working mode of the wide-narrow dual-mode cluster terminal according to the downlink signal strength of the broadband cluster.
In one embodiment, the radio frequency front end module further comprises:
the receiving branching device is respectively connected with the radio frequency duplexer, the broadband cluster module and the narrowband cluster module;
the first power amplifier is connected with the broadband cluster module;
the second power amplifier is connected with the narrow-band cluster module;
the radio frequency switch is respectively connected with the radio frequency duplexer, the first power amplifier and the second power amplifier;
the radio frequency switch is connected with the mode selection module, the first power amplifier is connected with the mode selection module, and the second power amplifier is connected with the mode selection module.
In one embodiment, the mode selection module is configured to determine that the working mode is a broadband cluster mode when the strength of the downlink signal is greater than or equal to a predetermined first threshold value; when the strength of the downlink signal is smaller than or equal to a preset second threshold value, determining that the working mode is a narrow-band cluster mode; and when the strength of the downlink signal is smaller than a first threshold value and larger than a second threshold value, determining that the working mode is a coexistence mode of a broadband cluster and a narrowband cluster, wherein the first threshold value is larger than the second threshold value.
In one embodiment, the mode selection module is configured to, in the coexistence mode, when there is a transmission conflict between a broadband cluster module and a narrowband cluster module, control the broadband cluster module to preferentially transmit data, and start a timer, determine whether the narrowband cluster module is in a network-connected residence state when the timer arrives, cancel the timer if the timer arrives, and if the timer does not arrive, control the narrowband cluster module to preferentially transmit data after the broadband cluster module completes transmitting data so as to complete network-connection residence.
A mode switching method of a wide-narrow dual-mode cluster terminal, the wide-narrow dual-mode cluster terminal comprises: an antenna; the radio frequency front end module comprises a radio frequency duplexer connected with the antenna; the broadband cluster module is connected with the radio frequency front-end module; the narrowband cluster module is connected with the radio frequency front end module and has the same working frequency band as the broadband cluster module; the method comprises the following steps:
detecting the downlink signal intensity of the broadband cluster;
and determining the working mode of the wide-narrow dual-mode cluster terminal according to the downlink signal strength of the broadband cluster.
In one embodiment, the radio frequency front end module further comprises: the receiving branching device is respectively connected with the radio frequency duplexer, the broadband cluster module and the narrowband cluster module; the first power amplifier is connected with the broadband cluster module; the second power amplifier is connected with the narrow-band cluster module; the radio frequency switch is respectively connected with the radio frequency duplexer, the first power amplifier and the second power amplifier; the radio frequency switch is connected with the mode selection module, the first power amplifier is connected with the mode selection module, and the second power amplifier is connected with the mode selection module.
In one embodiment, the determining the working mode of the dual-mode trunking terminal according to the downlink signal strength of the broadband trunking includes:
when the strength of the downlink signal is greater than or equal to a preset first threshold value, determining that the working mode is a broadband cluster mode; when the strength of the downlink signal is smaller than or equal to a preset second threshold value, determining that the working mode is a narrow-band cluster mode; and when the strength of the downlink signal is smaller than a first threshold value and larger than a second threshold value, determining that the working mode is a coexistence mode of a broadband cluster and a narrowband cluster, wherein the first threshold value is larger than the second threshold value.
In one embodiment, the method further comprises:
in the coexistence mode, when the broadband cluster module and the narrowband cluster module have transmission conflict, the broadband cluster module is controlled to transmit data preferentially, a timer is started, whether the narrowband cluster module is in a network-access resident state or not is judged when the timer arrives, if yes, the timer is canceled, and if not, after the broadband cluster module finishes transmitting data, the narrowband cluster module is controlled to transmit data preferentially so as to finish network-access resident.
A mode switching device of a wide-narrow dual-mode cluster terminal comprises a processor and a memory;
the memory stores an application program executable by the processor, for causing the processor to execute the mode switching method of the wide-narrow dual-mode cluster terminal according to any one of the above.
A computer readable storage medium having stored therein computer readable instructions for performing the mode switching method of the wide and narrow dual mode cluster terminal as set forth in any one of the above.
As can be seen from the above technical solution, in the embodiment of the present invention, a dual-mode trunking terminal includes: an antenna; the radio frequency front end module comprises a radio frequency duplexer connected with the antenna; the broadband cluster module is connected with the radio frequency front-end module; the narrowband cluster module is connected with the radio frequency front end module and has the same working frequency band as the broadband cluster module; and the mode selection module is used for determining the working mode of the wide-narrow dual-mode cluster terminal according to the downlink signal strength of the broadband cluster. Therefore, the embodiment of the invention realizes the wide-narrow dual-mode cluster terminal which has only one main antenna and works in the same frequency band.
Drawings
Fig. 1 is a functional block diagram of a wide and narrow dual-mode trunking terminal according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of determining an operation mode based on downlink signal strength of a broadband cluster according to an embodiment of the present invention.
Fig. 3 is an exemplary block diagram of a wide and narrow dual mode trunking terminal according to an embodiment of the present invention.
Fig. 4 is a mode switching method of a wide and narrow dual mode trunking terminal according to an embodiment of the present invention.
Fig. 5 is a block diagram of a mode switching apparatus of a wide and narrow dual mode cluster terminal according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present invention more apparent.
For simplicity and clarity of description, the following description sets forth aspects of the invention by describing several exemplary embodiments. Numerous details in the embodiments are provided solely to aid in the understanding of the invention. It will be apparent, however, that the embodiments of the invention may be practiced without limitation to these specific details. Some embodiments are not described in detail in order to avoid unnecessarily obscuring aspects of the present invention, but rather only to present a framework. Hereinafter, "comprising" means "including but not limited to", "according to … …" means "according to at least … …, but not limited to only … …". The term "a" or "an" is used herein to refer to a number of components, either one or more, or at least one, unless otherwise specified.
The applicant researches dual mode terminals in public networks and finds that the dual mode terminals can be divided into:
(1) Dual card dual standby single pass (Dual SIM Dual Standby, DSDS): the terminal inserts the double SIM card, so that the network paging can be monitored in a time-sharing way under the standby of two paths of communication services; when one SIM card has communication traffic, the other SIM card is not available.
(2) Dual card bi-pass (Dual SIM Dual Active, DSDA): the terminal is inserted into the double SIM cards, so that when one SIM card has communication service, the other SIM card can respond to network paging and access to switch communication channels or support simultaneous communication of the two SIM cards.
The dual-pass mode of the communication modules of the two SIM cards mainly comprises the following steps:
(1) The main antenna and the auxiliary antenna of the LTE are utilized, and under the double-pass condition, the main antenna is used by a main SIM card of the terminal, and the auxiliary antenna is used by an auxiliary SIM card; and when the auxiliary SIM card is in an idle state, periodically occupying the auxiliary antenna to perform network paging monitoring.
(2) And the carrier aggregation characteristic of LTE, and the radio frequency channels of a plurality of carriers are connected with the antenna through a multi-frequency combination. The main SIM card and the auxiliary SIM card occupy a radio frequency channel according to the service priority.
(3) With carrier aggregation or multiple input multiple output (Multi Input Multi Output, MIMO) antenna characteristics of LTE, reception is designed according to dual receive path DR-DSDS, but the primary and secondary SIM cards have only one transmit path. The auxiliary SIM card occupies the auxiliary antenna in a time sharing way, and network paging monitoring of the auxiliary card is carried out. And when the auxiliary card has communication service, carrying out transmission channel occupation scheduling according to the service priorities of the two cards.
Applicants have also found that: the main mode of the public network terminal for realizing dual mode and dual standby is that the second SIM card utilizes the auxiliary antenna or carrier aggregation channel to perform paging monitoring. However, for a trunking handheld terminal such as 350MHz, the implementation of a high-efficiency dual antenna is difficult, so that narrowband downlink trunking interception cannot be performed by using the auxiliary antenna of the broadband communication module. In addition, if the main antenna is demultiplexed in a time-division manner, it is considered that the two clusters have a short listening interval (e.g., 160 ms), and it is difficult to solve the problem of antenna multiplexing with a short period. Therefore, DSDS or DSDA schemes in the public network cannot be implemented at the trunked terminals. In addition, if an interoperation mode similar to 2G/3G/4G modes is adopted, the terminal respectively performs cell signal measurement on the two modes, then reports the measurement result to the network, and the network side determines the mode switching, so that the mode can realize the cluster switching of the terminal between the wide and narrow modes, but needs to interconnect between the wide and narrow networks and define a new interface flow, and the scheme can not be implemented under the condition that the switching specification of the wide and narrow network side is not defined.
Therefore, the embodiment of the invention focuses on solving the technical problem of how to realize the switching of the dual-mode trunking terminal under the condition that the terminal only has one main antenna and the dual-mode frequency band cannot be separated by the multi-frequency combiner, and can also keep the continuity of trunking services.
In order to solve the technical problem, the applicant summarizes a service model of trunked voice communication and finds that the service model has the following two characteristics:
(1) The main speaking transmitting time is short. Statistics indicate that the emission is about 95% of the main talk period of 5-10 seconds.
(2) Trunking talkback service, in a region with heavy traffic, for a single terminal, the service model is generally uplink voice transmission: downlink voice monitoring: the standby time is about 5% to 35% to 60%. For example, within 3 minutes, the talk-around initiation time is about 9 seconds, and the rest of the time traffic is not occupied with the transmit channel.
It can be seen that the above two characteristics are quite different from the voice call characteristics of the public network. A call in the public network may last for several minutes or half an hour during which the link is not allowed to break. Therefore, in dual-mode network, strict network-oriented handover, fallback, etc. operations are required, otherwise call interruption is caused, and the user needs to re-initiate access.
The embodiment of the invention provides a technical scheme for autonomously carrying out dual-mode switching by a terminal by utilizing the characteristic of trunking communication.
Fig. 1 is a functional block diagram of a wide and narrow dual-mode trunking terminal according to an embodiment of the present invention.
As shown in fig. 1, the wide-narrow dual-mode trunking terminal includes:
an antenna 101;
a radio frequency front end module 102 comprising a radio frequency diplexer connected to antenna 101;
the broadband cluster module 103 is connected with the radio frequency front end module 102;
the narrowband cluster module 104 is connected with the radio frequency front end module 102 and has the same working frequency band as the broadband cluster module 101;
and the mode selection module 105 is used for determining the working mode of the wide-narrow dual-mode cluster terminal according to the downlink signal strength of the broadband cluster.
The radio frequency duplexer is directly connected with the antenna 101, and the radio frequency duplexer can realize the receiving and transmitting combination of Frequency Division Duplex (FDD), so that the receiving path of the dual-mode cluster terminal is not affected by transmission.
The narrowband trunking module 104 is configured to provide narrowband trunking communication service; the broadband cluster module 103 is configured to provide broadband cluster communication services.
In the embodiment of the present invention, the radio frequency duplexer connected to the antenna 101 can realize that the transmission and the reception do not collide with each other, so that the dual-mode terminal can always demodulate the downlink trunked voice of the dual mode, and the antenna 101 can be shared in hardware by ensuring two modes (the narrowband trunking mode operated by the narrowband trunking module 104 and the broadband trunking mode operated by the broadband trunking module 103), so as to ensure the integrity of the downlink trunking path of the dual mode, and thus realize the full-time reception.
Moreover, in embodiments of the present invention, the mode selection module 105 may autonomously determine the operating mode in which the cluster operates.
In one embodiment, the rf front-end module 102 further comprises:
a receiving splitter, which is respectively connected with the radio frequency duplexer, the broadband cluster module 103 and the narrowband cluster module 104; a first power amplifier connected to the broadband cluster module 103; a second power amplifier connected to the narrowband cluster module 104; the radio frequency switch is respectively connected with the radio frequency duplexer, the first power amplifier and the second power amplifier; wherein the radio frequency switch is connected to the mode selection module 105, the first power amplifier is connected to the mode selection module 105, and the second power amplifier is connected to the mode selection module 105.
Therefore, in the embodiment of the invention, the downlink trunked voice can be demodulated simultaneously through the radio frequency duplexer and the receiving splitter.
In one embodiment, the mode selection module 105 is configured to determine that the working mode is a broadband cluster mode when the strength of the downlink signal is greater than or equal to a predetermined first threshold value; when the strength of the downlink signal is smaller than or equal to a preset second threshold value, determining that the working mode is a narrow-band cluster mode; when the strength of the downlink signal is smaller than a first threshold value and larger than a second threshold value, the working mode is determined to be a coexistence mode of the broadband cluster and the narrowband cluster, and the working mode is a dual-mode switching area at the moment, wherein the first threshold value is larger than the second threshold value.
Here, when the strength of the downlink signal is greater than or equal to the predetermined first threshold, it is determined that the operation mode is a broadband trunking mode, in which the mode selection module 105 enables the broadband trunking module 103 to be in an operation state, and the narrowband trunking communication module 104 is dormant. When the strength of the downlink signal is less than or equal to the predetermined second threshold value, the operation mode is determined to be a narrowband trunking mode, in which the mode selection module 105 enables the narrowband trunking module 104 to be in an operation state, and the wideband trunking module 103 is dormant. And when the strength of the downlink signal is smaller than the first threshold value and larger than the second threshold value, determining that the working mode is a coexistence mode of the broadband cluster and the narrowband cluster. In the coexistence mode, the mode selection module 105 enables the narrowband cluster module 104 to be in an operating state, enables the wideband cluster module 103 to be in an operating state, and the wideband cluster is in a primary mode and the narrowband cluster is in a secondary mode.
In one embodiment, a third threshold value is further set, and the third threshold value is between the second threshold value and the first threshold value. That is, the third threshold value is greater than the second threshold value and less than the first threshold value. The mode selection module may prevent frequent mode switching based on the third threshold. When the strength of the downlink signal is smaller than a second threshold value, the mode selection module determines that the working mode is a narrowband trunking mode, in which the mode selection module 105 enables the narrowband trunking module 104 to be in a working state and sleeps the broadband trunking module 103; when the strength of the downlink signal is greater than the second threshold value and less than the third threshold value, the mode selection module determines that the working mode is a coexistence mode, in the coexistence mode, the mode selection module 105 enables the narrowband cluster module 104 to be in a working state, enables the wideband cluster module 103 to be in a working state, and the wideband cluster is a main mode, and the narrowband cluster is an auxiliary mode, and is a dual-mode switching area at the moment; when the downlink signal strength of the broadband cluster is greater than the third threshold and less than the first threshold, the mode selection module determines that the working mode is a first broadband cluster mode, and in the first broadband cluster mode, the mode selection module 105 enables the broadband cluster module 103 to be in a working state, and the broadband cluster module 103 is in a non-working state without dormancy; when the downlink signal strength of the wideband cluster is greater than or equal to the first threshold, the mode selection module determines that the working mode is a second wideband cluster mode, in which the mode selection module 105 enables the wideband cluster module 103 to be in a working state, and sets the narrowband cluster communication module 104 to be in a sleep mode.
The first threshold value can be regarded as a broadband cluster stable residence threshold value; the second threshold may be considered a broadband cluster entry threshold; the third threshold may be considered a broadband cluster exit threshold. The first threshold is greater than the third threshold, and the third threshold is greater than the second threshold.
In one embodiment, the mode selection module 104 is configured to, in the coexistence mode, when there is a transmission conflict between the wideband cluster module 103 and the narrowband cluster module 104, control the wideband cluster module 103 to preferentially transmit data, and start a timer, determine whether the narrowband cluster module 104 is in the network-connected residence state when the timer arrives, cancel the timer if yes, and if not, control the narrowband cluster module 104 to preferentially transmit data to complete the network-connected residence after the wideband cluster module 103 completes transmitting the data.
It can be seen that, in the coexistence mode, when the broadband cluster module 103 and the narrowband cluster module 104 collide (i.e. the broadband cluster module 103 and the narrowband cluster module 104 have a data transmission requirement at the same time), the mode selection module 105 generates a transmission collision trigger, and starts a delay timer, and during a timer period (for example, 30 seconds), the mode selection module 105 continuously detects whether the narrowband cluster network (i.e. the standby network) is in the network-entered residence state. Wherein, when the timer does not timeout, indicating that the narrowband cluster module 104 has completed the network residence, the timer is cancelled. When the timer expires and the standby network does not complete network entry residence, the secondary mode priority is forced after the broadband cluster module 103 (i.e., the current primary mode) completes transmission. Meanwhile, in the auxiliary mode priority, the narrowband cluster module 104 is immediately triggered to initiate network residence, then the residence is queried at regular time, and after the residence is completed, the main mode priority mode is restored, namely the broadband cluster module 103 is restored to transmit data preferentially.
Fig. 2 is a schematic diagram of determining an operation mode based on downlink signal strength of a broadband cluster according to an embodiment of the present invention. The cluster stability residence threshold value P1 is greater than the broadband cluster entrance threshold value P2, and the broadband cluster entrance threshold value P2 is greater than the broadband cluster exit threshold value P3.
The mode selection module autonomously determines a working mode of the cluster according to the downlink signal intensity of a cell in the broadband cluster, and comprises the following steps:
(1) And when the downlink channel measurement result is larger than P2 and smaller than P1, the working mode of the cluster work is a first broadband cluster mode. In the first broadband trunking mode, trunking communication is realized by using the broadband trunking communication module, and the narrowband trunking communication module is set to a non-working state without dormancy. And when the downlink channel measurement result is greater than P1, the working mode of the cluster work is a second broadband cluster mode. In the second broadband trunking mode, trunking communication is realized by using the broadband trunking communication module, and the narrowband trunking communication module is set to a dormant mode in order to save power consumption of the narrowband trunking communication module.
(2) When the downlink channel measurement result is lower than the exiting broadband cluster exiting threshold value P3, the working mode of the cluster is a narrowband cluster mode. In the narrowband trunking mode, trunking communication is realized by using a narrowband trunking communication module, and the broadband trunking communication module is set to be in a dormant mode in order to save the power consumption of the broadband trunking communication module. And when the broadband cluster exit threshold value P3 is lower, the terminal exits the broadband cluster mode and automatically enters the narrowband cluster mode.
(3) When the downlink channel measurement result is between P2 and P3, a coexistence mode is introduced in which: the trunking uplink main speaking transmission is completed in a broadband trunking cell; for downlink trunking monitoring, the broadband trunking module and the narrowband trunking module both receive and demodulate downlink trunking voice at the same time, and the audio path, the group display and the like are all set according to the broadband trunking module. However, once the working mode of the terminal is switched, the audio channel is immediately and synchronously switched to the corresponding mode channel, so that the downlink cluster voice interruption time is ensured to be as small as possible. After the narrowband cluster module is activated, the terminal does not initiate an uplink service request on the narrowband cluster. However, if the terminal moves, the resident cell of the narrowband cluster may change, and the narrowband cluster may use an uplink transmission channel.
When the power amplifier emission enabling of the broadband cluster module and the narrowband cluster module are not in conflict, the radio frequency switch and the power amplifier enabling state are set according to the requirements of all modes. When the transmissions of the broadband cluster module and the narrowband cluster module collide, the mode selection module generates a transmission collision trigger and starts a delay timer, and in a timer period (for example, 30 seconds), the mode selection module inquires whether the state of the narrowband cluster is the network-entered resident state. And when the timer does not time out, the narrowband cluster module finishes network access residence, and the timer is canceled. When the timer is overtime and the narrowband cluster module does not complete network access residence, the switch is forcibly set to be in a narrowband cluster priority mode after the current broadband cluster service completes data transmission. Meanwhile, in the narrowband cluster priority mode, the narrowband cluster is immediately triggered to initiate network residence, then the residence is completed by timing inquiry, and after the residence is completed, the broadband cluster priority mode is restored.
For the audio path setting, in the switching area, the broadband cluster module and the narrowband cluster module demodulate downlink voice at the same time. And when the mode selection module determines the switching of the working modes according to the cell level of the broadband cluster, simultaneously setting an audio channel for switching. Because the voices in the two working modes are demodulated, the switching can be completed within 20ms, so that the cluster voice loss is ensured to be as small as possible.
It can be seen that the embodiment of the present invention provides a method for autonomously performing dual-mode switching by using trunking communication, which at least has the following characteristics:
(1) The dual-mode terminal can be prevented from being affected by emission through the duplexer and the receiving splitter, downlink signals of the broadband cluster and the narrowband cluster can be received simultaneously, and downlink cluster voice can be demodulated simultaneously.
(2) The two modes, broadband cluster and narrowband cluster, share the transmitting antenna and introduce a long-period collision coordination function. The broadband cluster mode defaults to the primary operating mode; the narrowband trunked mode defaults to the secondary mode of operation. The primary mode bears all service communication functions, and the secondary mode only initiates registration and other requests during cell reselection. By introducing a longer transmission delay (e.g. 1 to 3 minutes) an alternative mode cell update is achieved.
(3) The broadband cluster module and the narrowband cluster module may be common communication modules, and no special functions or interfaces are provided for dual mode handover.
(4) The mode selection module autonomously determines the main working mode of the cluster without assistance of a network and completes corresponding control operation,
(5) In the switching area of the main working cell, the terminal demodulates the downlink cluster voice of the main working mode and the auxiliary working mode at the same time, and routes the audio channel to the communication module of the main working mode; when the switching occurs, the audio channels are switched at the same time, and the switching time is less than 20ms, so that the downlink voice is basically not influenced when the switching is realized.
Fig. 2 is an exemplary block diagram of a wide and narrow dual mode trunking terminal according to an embodiment of the present invention.
In fig. 2, the rf front-end module includes an rf duplexer, a receive splitter, an rf switch, a first Power Amplifier (PA), and a second PA. Wherein:
the radio frequency duplexer is connected with the antenna, so that the receiving and transmitting combination of FDD can be realized, and the receiving path of the dual mode is not affected by transmission. The receiving branching device is respectively connected with the broadband communication module and the narrowband trunking communication module, so that the broadband communication module and the narrowband trunking communication module can be ensured to simultaneously receive data, and the hardware has the condition of dual-mode simultaneous trunking voice receiving. The radio frequency switch is respectively connected with the mode selection module, the broadband communication module and the narrowband trunking communication module to realize the narrowband trunking communication and the transmission channel selection of the broadband trunking communication, wherein the selection signal is determined by the output of the mode selection module. And the mode selection module sets one of the first PA and the second PA as power amplifier enabling according to the mode state of the terminal.
And the mode selection module is used for realizing the selection of the cluster working mode and the configuration of corresponding path switching.
The broadband communication module and the narrowband trunking communication module are two independent communication modules. For example, the broadband communication module may be implemented as an LTE transceiver module supporting 350 MHz; the narrowband trunked communication module may be implemented as a PDT transceiver module supporting 350 MHz. The broadband communication module and the narrowband trunking communication module are common single-mode communication modules, and no special function or interface is provided for dual-mode switching. The broadband communication module and the narrowband trunking communication module both operate in the 350MHz FDD frequency band (uplink 351-356MHz, downlink 361-366 MHz). Considering that the standby power consumption of LTE is lower than PDT, and that the LTE network can provide both trunking and data services, it is therefore preferable to reside under the LTE network of the broadband communication module.
The audio path selection module is respectively connected with the broadband communication module, the narrowband trunking communication module and the audio processing module. And determining which mode to perform trunking communication in according to the mode selection module, and realizing the selection from the audio processing module to the broadband communication module or the narrowband trunking communication module. In the dual-mode switching area, the broadband communication module and the narrowband trunking communication module demodulate downlink trunking voice at the same time, so that the downlink trunking voice is basically not lost after the mode is switched.
Table 1 is a table of switch, power amplifier and audio path processing selections for the primary mode of operation in the broadband cluster.
TABLE 1
In table 1, the meaning of "X" is set according to specific requirements.
Fig. 4 is a mode switching method of a wide and narrow dual mode trunking terminal according to an embodiment of the present invention. The wide-narrow dual-mode cluster terminal comprises: an antenna; the radio frequency front end module comprises a radio frequency duplexer connected with the antenna; the broadband cluster module is connected with the radio frequency front-end module; and the narrowband cluster module is connected with the radio frequency front end module and has the same working frequency range as the broadband cluster module.
As shown in fig. 4, the method includes:
step 401: detecting the downlink signal intensity of the broadband cluster;
step 402: and determining the working mode of the wide-narrow dual-mode cluster terminal according to the downlink signal strength of the broadband cluster.
In one embodiment, the radio frequency front end module further comprises: the receiving branching device is respectively connected with the radio frequency duplexer, the broadband cluster module and the narrowband cluster module; the first power amplifier is connected with the broadband cluster module; the second power amplifier is connected with the narrow-band cluster module; the radio frequency switch is respectively connected with the radio frequency duplexer, the first power amplifier and the second power amplifier; the radio frequency switch is connected with the mode selection module, the first power amplifier is connected with the mode selection module, and the second power amplifier is connected with the mode selection module.
In one embodiment, the determining the working mode of the dual-mode trunking terminal according to the downlink signal strength of the broadband trunking includes:
when the strength of the downlink signal is greater than or equal to a preset first threshold value, determining that the working mode is a broadband cluster mode; when the strength of the downlink signal is smaller than or equal to a preset second threshold value, determining that the working mode is a narrow-band cluster mode; and when the strength of the downlink signal is smaller than a first threshold value and larger than a second threshold value, determining that the working mode is a coexistence mode of a broadband cluster and a narrowband cluster, wherein the first threshold value is larger than the second threshold value.
In one embodiment, the method further comprises:
in the coexistence mode, when the broadband cluster module and the narrowband cluster module have transmission conflict, the broadband cluster module is controlled to transmit data preferentially, a timer is started, whether the narrowband cluster module is in a network-access resident state or not is judged when the timer arrives, if yes, the timer is canceled, and if not, after the broadband cluster module finishes transmitting data, the narrowband cluster module is controlled to transmit data preferentially so as to finish network-access resident.
The embodiment of the invention also provides a mode switching device of the wide-narrow dual-mode cluster terminal.
Fig. 5 is a block diagram of a mode switching apparatus of a wide and narrow dual mode cluster terminal according to an embodiment of the present invention.
As shown in fig. 5, the mode switching device includes: a processor 501 and a memory 502; in which a memory 502 stores therein an application executable by a processor 501 for causing the processor 501 to perform the mode switching method of the wide and narrow dual mode trunked terminal as described in any one of the above.
The memory 502 may be implemented as a variety of storage media such as an electrically erasable programmable read-only memory (EEPROM), a Flash memory (Flash memory), a programmable read-only memory (PROM), and the like. The processor 501 may be implemented to include one or more central processors or one or more field programmable gate arrays, where the field programmable gate arrays integrate one or more central processor cores. In particular, the central processor or central processor core may be implemented as a CPU or MCU.
It should be noted that not all the steps and modules in the above processes and the structure diagrams are necessary, and some steps or modules may be omitted according to actual needs. The execution sequence of the steps is not fixed and can be adjusted as required. The division of the modules is merely for convenience of description and the division of functions adopted in the embodiments, and in actual implementation, one module may be implemented by a plurality of modules, and functions of a plurality of modules may be implemented by the same module, and the modules may be located in the same device or different devices.
The hardware modules in the various embodiments may be implemented mechanically or electronically. For example, a hardware module may include specially designed permanent circuits or logic devices (e.g., special purpose processors such as FPGAs or ASICs) for performing certain operations. A hardware module may also include programmable logic devices or circuits (e.g., including a general purpose processor or other programmable processor) temporarily configured by software for performing particular operations. As regards implementation of the hardware modules in a mechanical manner, either by dedicated permanent circuits or by circuits that are temporarily configured (e.g. by software), this may be determined by cost and time considerations.
The present invention also provides a machine-readable storage medium storing instructions for causing a machine to perform a method as described herein. Specifically, a system or apparatus provided with a storage medium on which a software program code realizing the functions of any of the above embodiments is stored, and a computer (or CPU or MPU) of the system or apparatus may be caused to read out and execute the program code stored in the storage medium. Further, some or all of the actual operations may be performed by an operating system or the like operating on a computer based on instructions of the program code. The program code read out from the storage medium may also be written into a memory provided in an expansion board inserted into a computer or into a memory provided in an expansion unit connected to the computer, and then, based on instructions of the program code, a CPU or the like mounted on the expansion board or the expansion unit may be caused to perform part or all of actual operations, thereby realizing the functions of any of the above embodiments.
Storage medium implementations for providing program code include floppy disks, hard disks, magneto-optical disks, optical disks (e.g., CD-ROMs, CD-R, CD-RWs, DVD-ROMs, DVD-RAMs, DVD-RWs, DVD+RWs), magnetic tapes, non-volatile memory cards, and ROMs. Alternatively, the program code may be downloaded from a server computer or cloud by a communications network.
In this document, "schematic" means "serving as an example, instance, or illustration," and any illustrations, embodiments described herein as "schematic" should not be construed as a more preferred or advantageous solution. For simplicity of the drawing, the parts relevant to the present invention are shown only schematically in the drawings, and do not represent the actual structure thereof as a product. Additionally, in order to simplify the drawing for ease of understanding, components having the same structure or function in some of the drawings are shown schematically with only one of them, or only one of them is labeled. In this document, "a" does not mean to limit the number of relevant portions of the present invention to "only one thereof", and "an" does not mean to exclude the case where the number of relevant portions of the present invention is "more than one". In this document, "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and the like are used merely to indicate relative positional relationships between the relevant portions, and do not limit the absolute positions of the relevant portions.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a wide and narrow bimodulus cluster terminal which characterized in that includes:
an antenna;
the radio frequency front end module comprises a radio frequency duplexer connected with the antenna;
the broadband cluster module is connected with the radio frequency front-end module;
the narrowband cluster module is connected with the radio frequency front end module and has the same working frequency band as the broadband cluster module;
the mode selection module is used for determining the working mode of the wide-narrow dual-mode cluster terminal according to the downlink signal intensity of the broadband cluster; the determining the working mode of the wide-narrow dual-mode cluster terminal according to the downlink signal strength of the broadband cluster comprises the following steps: when the strength of the downlink signal is greater than or equal to a preset first threshold value, determining that the working mode is a broadband cluster mode; when the strength of the downlink signal is smaller than or equal to a preset second threshold value, determining that the working mode is a narrow-band cluster mode; when the strength of the downlink signal is smaller than a first threshold value and larger than a second threshold value, determining that the working mode is a coexistence mode of a broadband cluster and a narrowband cluster, wherein the first threshold value is larger than the second threshold value;
the mode selection module is used for controlling the broadband cluster module to transmit data preferentially when the broadband cluster module and the narrowband cluster module have transmission conflict in the coexistence mode, starting a timer, judging whether the narrowband cluster module is in a network-access resident state when the timer arrives, canceling the timer if the timer arrives, and controlling the narrowband cluster module to transmit data preferentially after the broadband cluster module finishes transmitting data to finish network-access resident if the timer does not arrive.
2. The dual-mode trunked terminal of claim 1, wherein the radio frequency front-end module further comprises:
the receiving branching device is respectively connected with the radio frequency duplexer, the broadband cluster module and the narrowband cluster module;
the first power amplifier is connected with the broadband cluster module;
the second power amplifier is connected with the narrow-band cluster module;
the radio frequency switch is respectively connected with the radio frequency duplexer, the first power amplifier and the second power amplifier;
the radio frequency switch is connected with the mode selection module, the first power amplifier is connected with the mode selection module, and the second power amplifier is connected with the mode selection module.
3. A mode switching method of a wide-narrow dual-mode cluster terminal is characterized in that the wide-narrow dual-mode cluster terminal comprises: an antenna; the radio frequency front end module comprises a radio frequency duplexer connected with the antenna; the broadband cluster module is connected with the radio frequency front-end module; the narrowband cluster module is connected with the radio frequency front end module and has the same working frequency band as the broadband cluster module; the method comprises the following steps:
detecting the downlink signal intensity of the broadband cluster;
determining the working mode of the wide-narrow dual-mode cluster terminal according to the downlink signal intensity of the broadband cluster;
the determining the working mode of the wide-narrow dual-mode cluster terminal according to the downlink signal strength of the broadband cluster comprises the following steps:
when the strength of the downlink signal is greater than or equal to a preset first threshold value, determining that the working mode is a broadband cluster mode; when the strength of the downlink signal is smaller than or equal to a preset second threshold value, determining that the working mode is a narrow-band cluster mode; when the strength of the downlink signal is smaller than a first threshold value and larger than a second threshold value, determining that the working mode is a coexistence mode of a broadband cluster and a narrowband cluster, wherein the first threshold value is larger than the second threshold value;
the method further comprises the steps of:
in the coexistence mode, when the broadband cluster module and the narrowband cluster module have transmission conflict, the broadband cluster module is controlled to transmit data preferentially, a timer is started, whether the narrowband cluster module is in a network-access resident state or not is judged when the timer arrives, if yes, the timer is canceled, and if not, after the broadband cluster module finishes transmitting data, the narrowband cluster module is controlled to transmit data preferentially so as to finish network-access resident.
4. The method for switching modes of the wide and narrow dual-mode trunking terminal according to claim 3, wherein,
the radio frequency front end module further comprises: the receiving branching device is respectively connected with the radio frequency duplexer, the broadband cluster module and the narrowband cluster module; the first power amplifier is connected with the broadband cluster module; the second power amplifier is connected with the narrow-band cluster module; and the radio frequency switch is respectively connected with the radio frequency duplexer, the first power amplifier and the second power amplifier.
5. The mode switching device of the wide-narrow dual-mode cluster terminal is characterized by comprising a processor and a memory;
the memory stores therein an application executable by the processor for causing the processor to perform the mode switching method of the wide and narrow dual mode cluster terminal according to any one of claims 3 to 4.
6. A computer readable storage medium having stored therein computer readable instructions for performing the mode switching method of the dual-mode cluster terminal according to any one of claims 3 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911254788.8A CN112954745B (en) | 2019-12-10 | 2019-12-10 | Wide-narrow dual-mode cluster terminal and mode switching method and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911254788.8A CN112954745B (en) | 2019-12-10 | 2019-12-10 | Wide-narrow dual-mode cluster terminal and mode switching method and device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112954745A CN112954745A (en) | 2021-06-11 |
| CN112954745B true CN112954745B (en) | 2023-04-28 |
Family
ID=76225337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911254788.8A Active CN112954745B (en) | 2019-12-10 | 2019-12-10 | Wide-narrow dual-mode cluster terminal and mode switching method and device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112954745B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113453169B (en) * | 2021-06-24 | 2022-10-25 | 哈尔滨海能达科技有限公司 | Communication method, system, electronic device and storage medium |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1093179A2 (en) * | 1999-10-13 | 2001-04-18 | Murata Manufacturing Co., Ltd. | Dielectric filter, dielectric duplexer and communication apparatus incorporating the same |
| CN201114048Y (en) * | 2007-09-10 | 2008-09-10 | 南京泰通科技有限公司 | Broad band repeater station possessing channel option function |
| CN101442838A (en) * | 2007-11-23 | 2009-05-27 | Nxp股份有限公司 | System for implementing multi-mode standby terminal by duplexer |
| WO2010054364A1 (en) * | 2008-11-10 | 2010-05-14 | Qualcomm Incorporated | Power headroom-sensitive scheduling |
| CN102510270A (en) * | 2011-11-04 | 2012-06-20 | 中兴通讯股份有限公司 | Duplexer, radio-frequency front module, multi-mode terminal and filtering method of duplexer |
| CN103096260A (en) * | 2011-11-04 | 2013-05-08 | 中兴通讯股份有限公司 | Broadband digital cluster business achieving method, appliance and system |
| CN105208624A (en) * | 2015-08-27 | 2015-12-30 | 重庆邮电大学 | Service-based multi-access network selection system and method in heterogeneous wireless network |
| CN206506715U (en) * | 2016-11-23 | 2017-09-19 | 北京坦达信息科技有限公司 | A kind of hand-held wide and narrow strip fusion multi-mode communication terminal |
| CN108419276A (en) * | 2017-02-10 | 2018-08-17 | 海能达通信股份有限公司 | A kind of narrowband method of handover, the apparatus and system of width converged communication system |
| CN109151766A (en) * | 2018-07-17 | 2019-01-04 | 南京地铁建设有限责任公司 | Adaptive rail traffic communication system and communication means based on TETRA and LTE |
| CN109155454A (en) * | 2016-05-16 | 2019-01-04 | 摩托罗拉解决方案公司 | Dual back-roll antenna for communication equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015104811A1 (en) * | 2015-03-27 | 2016-09-29 | Intel IP Corporation | A receiver and method for reducing a distortion component relative to a baseband transmit signal in a baseband receive signal |
-
2019
- 2019-12-10 CN CN201911254788.8A patent/CN112954745B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1093179A2 (en) * | 1999-10-13 | 2001-04-18 | Murata Manufacturing Co., Ltd. | Dielectric filter, dielectric duplexer and communication apparatus incorporating the same |
| CN201114048Y (en) * | 2007-09-10 | 2008-09-10 | 南京泰通科技有限公司 | Broad band repeater station possessing channel option function |
| CN101442838A (en) * | 2007-11-23 | 2009-05-27 | Nxp股份有限公司 | System for implementing multi-mode standby terminal by duplexer |
| WO2010054364A1 (en) * | 2008-11-10 | 2010-05-14 | Qualcomm Incorporated | Power headroom-sensitive scheduling |
| CN102510270A (en) * | 2011-11-04 | 2012-06-20 | 中兴通讯股份有限公司 | Duplexer, radio-frequency front module, multi-mode terminal and filtering method of duplexer |
| CN103096260A (en) * | 2011-11-04 | 2013-05-08 | 中兴通讯股份有限公司 | Broadband digital cluster business achieving method, appliance and system |
| CN105208624A (en) * | 2015-08-27 | 2015-12-30 | 重庆邮电大学 | Service-based multi-access network selection system and method in heterogeneous wireless network |
| CN109155454A (en) * | 2016-05-16 | 2019-01-04 | 摩托罗拉解决方案公司 | Dual back-roll antenna for communication equipment |
| CN206506715U (en) * | 2016-11-23 | 2017-09-19 | 北京坦达信息科技有限公司 | A kind of hand-held wide and narrow strip fusion multi-mode communication terminal |
| CN108419276A (en) * | 2017-02-10 | 2018-08-17 | 海能达通信股份有限公司 | A kind of narrowband method of handover, the apparatus and system of width converged communication system |
| CN109151766A (en) * | 2018-07-17 | 2019-01-04 | 南京地铁建设有限责任公司 | Adaptive rail traffic communication system and communication means based on TETRA and LTE |
Non-Patent Citations (2)
| Title |
|---|
| M. Hikita ; K. Sakiyama ; O. Hikino ; M. Kijima."New low-distortion band-switching techniques for SAW antenna duplexers used in ultra-wide-band cellular phone".《IEEE Transactions on Microwave Theory and Techniques》.2004,全文. * |
| 方箭 ; 王坦 ; 黄标."高频段宽带无线通信前瞻".《电信科学》.2014,全文. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112954745A (en) | 2021-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11356842B2 (en) | Throughput and radio resource utilization for user equipment having multiple subscriber identity modules | |
| US9807814B2 (en) | User equipment with improved DRX performance | |
| EP2677836B1 (en) | Multi-card multi-standby terminal, synchronization method and device thereof | |
| US9008636B2 (en) | Method for dual SIM dual standby terminal | |
| KR101166984B1 (en) | Method and system for utilizing transmit local oscillator for improved cell search and multi-link communication in multi-mode device | |
| KR101460056B1 (en) | Virtual modem suspension handler in multiple sim user equipment | |
| US9307457B2 (en) | User equipment with selective neighbor cell detection | |
| EP2807897B1 (en) | Method for using a user equipment with a first public land mobile network and with a second public land mobile network, user equipment, program and computer program product | |
| US20160212660A1 (en) | Cell search method of terminal and related device and system | |
| EP2437528A1 (en) | Method for dual sim dual standby terminal | |
| CN105794298A (en) | Network nodes, a user equipment and methods therein for enabling D2D communication | |
| US11736930B2 (en) | Throughput and radio resource utilization for user equipment having multiple subscriber identity modules | |
| JP4176557B2 (en) | Radio control station, radio terminal, communication system, and communication method | |
| CN113055965B (en) | Wide-narrow dual-mode cluster terminal and mode switching method and device thereof | |
| CN112954745B (en) | Wide-narrow dual-mode cluster terminal and mode switching method and device thereof | |
| US20200204981A1 (en) | Device and method for multi-receive multi-sim | |
| WO2013165680A1 (en) | Antenna arrangement and mobile communication device using same | |
| US9451419B2 (en) | Method and system for seamlessly switching between a trunked mode operation and a direct mode operation | |
| CN111865345A (en) | Terminal device and chip | |
| CN106879081B (en) | Radio communication device and method for controlling radio communication device | |
| US20060141961A1 (en) | Method and system for selective receiver shutdown | |
| CN115915395A (en) | Paging collision processing method and device, terminal equipment, chip and storage medium | |
| CN116548021A (en) | Method, device, equipment and storage medium for selecting network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |