CN116208283A - Multimode synchronous communication system and user terminal - Google Patents

Multimode synchronous communication system and user terminal Download PDF

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Publication number
CN116208283A
CN116208283A CN202310178182.0A CN202310178182A CN116208283A CN 116208283 A CN116208283 A CN 116208283A CN 202310178182 A CN202310178182 A CN 202310178182A CN 116208283 A CN116208283 A CN 116208283A
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China
Prior art keywords
communication system
mode communication
frame
main mode
synchronous
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CN202310178182.0A
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Chinese (zh)
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冯金城
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Zhuhai Xinjixun Communication Technology Co ltd
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Zhuhai Xinjixun Communication Technology Co ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0602—Systems characterised by the synchronising information used
    • H04J3/0605—Special codes used as synchronising signal
    • H04J3/0608—Detectors therefor, e.g. correlators, state machines
    • 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

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides a multimode synchronous communication system and a user terminal, which relate to the technical field of mobile communication and comprise the following steps: a frame interrupt clock for generating an interrupt signal; a processor having a primary mode communication system and at least one secondary mode communication system operating thereon; the main mode communication system is used for capturing a main mode callback function according to the interrupt signal aiming at each frame length so as to execute a corresponding communication task and output frame parameters of the main mode callback function; the auxiliary mode communication system is used for acquiring a synchronous time offset between a frame header of the auxiliary mode communication system and a frame header of the main mode communication system according to the interrupt signal and the frame parameter when a test starting instruction sent by the wireless radio frequency module is received and the completion of the execution of a communication task of the main mode communication system is detected, so that mobility measurement is periodically carried out according to the synchronous time offset. The beneficial effects are that the occupied hardware resources are few, the cost is low, and the power consumption is low; the software is simple to realize, and does not need inter-core communication or task arbitration.

Description

Multimode synchronous communication system and user terminal
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to a multimode synchronous communications system and a user terminal.
Background
With the evolution of communication technology and the development of internet of things, the requirements of the user terminal on low power consumption and low cost are higher and higher. For a multimode communication system, however, each communication mode frame interrupt may be based on the same or a different source clock; in the prior art, each communication mode adopts independent frame interruption, and the scheduling of each communication mode is independent and on different processors. This requires integrating multiple processor chips on the user terminal to enable each communication mode to monopolize one or more processors; this results in large chip area, high bottom current, and large occupied hardware resources, resulting in high cost and large power consumption.
In addition, each communication mode occupies one frame interrupt, so that the system frame numbers of the communication modes are different, and an asynchronous system is formed. When software scheduling is performed, task requirements are required to be met in each communication mode, and an additional MMC module is required to perform task management arbitration; the software design is complex.
Disclosure of Invention
In view of the problems existing in the prior art, the present invention provides a multimode synchronous communication system, comprising:
a frame interrupt clock for generating an interrupt signal;
the processor is respectively connected with the frame interrupt clock and the wireless radio frequency module, and a main mode communication system and at least one auxiliary mode communication system are operated on the processor;
the main mode communication system is used for capturing a main mode callback function according to the interrupt signal for each frame length so as to execute a corresponding communication task and output frame parameters of the main mode callback function;
the auxiliary mode communication system is used for acquiring a synchronous time offset between a frame header of the auxiliary mode communication system and a frame header of the main mode communication system according to the interrupt signal and the frame parameter when a start instruction sent by the wireless radio frequency module is received and the communication task of the main mode communication system is detected to be executed, so as to periodically perform mobility measurement according to the synchronous time offset.
Preferably, the frame parameters include a frame number, a subframe number, and a slot number of the primary mode communication system.
Preferably, the radio frequency module includes:
a receiving antenna for detecting a base station signal of the main mode communication system in real time;
and the signal evaluation unit is connected with the receiving antenna and is used for generating the starting instruction when the signal quality of the main mode communication system is judged to be lower than a preset threshold value according to the base station signal.
Preferably, the secondary mode communication system includes:
a first acquiring unit configured to acquire the frame parameters of the master mode communication system;
and the second acquisition unit is connected with the first acquisition unit and is used for carrying out blind detection on the auxiliary mode signal based on the frame parameter to obtain the synchronous time offset between the frame header of the second acquisition unit and the frame header of the main mode communication system.
Preferably, the synchronization time offset includes a sub-frame number deviation and an observation time difference of a frame header of the secondary mode communication system with respect to a frame header of the primary mode communication system.
Preferably, the secondary mode communication system further comprises:
a first synchronization unit, configured to calculate a subframe number of the secondary mode communication system for performing the mobility measurement according to the subframe number deviation and a frame header of the primary mode communication system;
and the second synchronization unit is connected with the first synchronization unit and is used for starting to capture an auxiliary mode callback function according to at least one subframe number before the mobility measurement subframe number is executed according to the interrupt signal so as to start to execute a corresponding measurement task after reaching the observation time difference after the subframe head of the mobility measurement subframe number.
Preferably, the observation time difference is smaller than one subframe number length.
The invention also provides a user terminal comprising the multimode synchronous communication system.
The technical scheme has the following advantages or beneficial effects:
1) The main mode communication system and each auxiliary mode communication system in the multimode synchronous communication system operate in the same processor and share a frame interrupt clock, so that the occupied hardware resources are few, the cost is low, and the power consumption is low;
2) And each auxiliary mode communication system is managed as a neighbor cell of the main mode communication system instead of an asynchronous system, so that a synchronous system with only one frame interrupt is realized, the software is simple to realize, inter-core communication is not needed, and task arbitration is not needed.
Drawings
FIG. 1 is a schematic diagram of a multimode synchronous communication system in accordance with a preferred embodiment of the present invention;
fig. 2 is a schematic diagram of signal synchronization when the NR system is a primary mode communication system and the LTE system is a secondary mode communication system in a preferred embodiment of the present invention.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples. The present invention is not limited to the embodiment, and other embodiments may fall within the scope of the present invention as long as they conform to the gist of the present invention.
In accordance with the foregoing problems with the prior art, the present invention provides a multimode synchronous communication system, as shown in fig. 1, comprising:
a frame interrupt clock 1 for generating an interrupt signal;
the processor 2 is respectively connected with the frame interrupt clock 1 and the wireless radio frequency module 3, and a main mode communication system 21 and at least one auxiliary mode communication system 22 are operated on the processor 2;
the main mode communication system 21 is configured to capture, for each frame length, a main mode callback function according to the interrupt signal, to perform a corresponding communication task, and output a frame parameter of itself;
the auxiliary mode communication system 22 is configured to, when receiving a measurement instruction sent by the radio frequency module 3 and detecting that the execution of a communication task of the main mode communication system 21 is completed, acquire a synchronization time offset between a frame header of the auxiliary mode communication system and a frame header of the main mode communication system 21 according to the interrupt signal and the frame parameter, so as to periodically perform mobility measurement according to the synchronization time offset.
Specifically, in this embodiment, the primary mode communication system 21 and the secondary mode communication system 22 operate on the same processor 2 and share a frame interrupt clock, the secondary mode communication system 22 acquires a synchronization time offset based on frame parameters of the primary mode communication system 21 (including a frame number, a subframe number, and a slot number of the primary mode communication system 21), so that the secondary mode communication system 22 and the primary mode communication system 21 share a frame number, and further, the synchronization time offset between the frame header of the secondary mode communication system 22 and the frame header of the primary mode communication system 21 can be determined based on the frame number, and each secondary mode communication system is managed as a neighboring cell of the primary mode communication system instead of an asynchronous system, so as to realize synchronization between the secondary mode communication system 22 and the primary mode communication system 21. Further, the synchronization of the secondary mode communication system 22 is to avoid task collision between the primary mode communication system 21 and the secondary mode communication system 22 when the communication task of the primary mode communication system 21 is completed, so that task arbitration is not required.
In the preferred embodiment of the present invention, the frame parameters include the frame number, sub-frame number and slot number of the master mode communication system 21.
In a preferred embodiment of the present invention, the radio frequency module 3 comprises:
a receiving antenna 31 for detecting a base station signal of the main mode communication system in real time;
the signal evaluation unit 32 is connected to the receiving antenna 31, and is configured to generate a measurement instruction when it is determined that the signal quality of the main mode communication system is lower than a preset threshold according to the base station signal.
In a preferred embodiment of the present invention, the secondary mode communication system 22 comprises:
a first acquiring unit 221 configured to acquire frame parameters of the master mode communication system 21;
the second obtaining unit 222 is connected to the first obtaining unit 221, and is configured to perform blind detection on the auxiliary mode signal based on the frame parameter to obtain a synchronization time offset between the frame header of the second obtaining unit and the frame header of the main mode communication system 21.
In the preferred embodiment of the present invention, the synchronization time offset includes a sub-frame number offset and an observation time difference of the frame header of the secondary mode communication system 22 relative to the frame header of the primary mode communication system 21.
Specifically, in this embodiment, the observation time difference is smaller than one subframe number length, and the synchronization time offset may be understood as a fractional value, where the subframe number deviation is an integer part of the value and the observation time difference is a fractional part of the value.
In a preferred embodiment of the present invention, the secondary mode communication system 22 further comprises:
a first synchronization unit 223 for calculating a subframe number of the secondary mode communication system 22 performing mobility measurement according to the subframe number deviation and the frame header of the primary mode communication system 21;
the second synchronization unit 224 is connected to the first synchronization unit 223, and is configured to start capturing the secondary mode callback function according to at least one subframe number before the mobility measurement subframe number is performed by the interrupt signal, so as to start performing a corresponding measurement task after an observation time difference after reaching a subframe header of the subframe number for performing the mobility measurement.
Specifically, in this embodiment, taking the frame header of the primary mode communication system 21 as the starting boundary of subframe0 as an example, if the subframe number deviation is 5 and the observation time difference is 5 symbols (1 slot contains 14 symbols), the secondary mode communication system 22 performs mobility measurement at the boundary of symbol 5 of subframe5, and so on.
Preferably, after the synchronization time offset is obtained once, the synchronization time offset may be considered to be fixed, and if the synchronization time offset is obtained at a subframe number of 0, the synchronization time offset may be stored and directly used within the frame length of a subframe number of 1, and so on.
The invention also provides a user terminal comprising the multimode synchronous communication system.
As a preferred embodiment of the present invention, the present technical solution may be applied to a multimode synchronous communication system composed of an NR (new radio) system, an LTE (long term evolution) system, and the like. Wherein the primary mode communication system includes, but is not limited to, one of an NR system, an LTE system, a 6G network system, a W network system, and the secondary mode communication system includes, but is not limited to, one or more of an NR system, an LTE system, a 6G network system, a W network system. Taking a dual-mode synchronous communication system formed by an NR system and an LTE system as an example, if a user terminal currently resides in an NR base station cell, the NR system is a primary mode communication system at this time, and the LTE system is a secondary mode communication system.
Further, the frame interrupt clock 1 may be configured to generate an interrupt signal every 0.5 ms. The above 0.5ms is only an example and is not limited thereto. If one subframe (1 ms) of the NR system and the LTE system includes 2 slots (0.5 ms), the interrupt signal generated every 0.5ms of the frame interrupt clock 1 may be considered as a slot interrupt signal. Further, if the NR system triggers a subframe interrupt every 0.5ms, the LTE system triggers a subframe interrupt every 1ms, the NR system captures a master mode callback function every time when receiving an interrupt signal in a working state, and captures a master mode callback function every time when receiving two interrupt signals in the working state.
As shown in fig. 2, the NR system and the LTE system share a frame interrupt clock unicount, and generate a slot interrupt signal every 0.5ms (including 14 symbols). The LTE system shares the frame number SFNN of the NR system. The primary mode callback function is an NR callback function, which may include a communication task that the NR system needs to correspondingly execute, for example, an NRSBB task, as shown in fig. 2, when the NR callback function captured at the starting boundary of SFNN, subframe0, slot0 includes an NRSBB task, the NR system correspondingly executes, and then captures the NR callback function again at the starting boundary of SFNN, subframe0, slot1, after execution is completed, the NR system is in an idle state, or may enter a dormant state, where the NR system is considered to be in a non-working state, and then the NR callback function is not captured at the starting boundary of SFNN, subframe0, slot 2. At this time, if the start command is received, the LTE system performs signal blind detection based on the frame number, the subframe number, and the slot number of the NR system, so as to obtain the synchronization time offset relative to SFNN, subframe 0. It can be understood that the signal blind detection of the LTE system is based on the frame number, the subframe number and the time slot number of the NR system to perform the receiving and correlation analysis of the sequence signal, and the obtained synchronization time offset is the synchronization time offset between the frame header of the LTE system and the frame header of the NR system. The signal blind detection process is in the prior art, and is not an invention point of the technical scheme, and a specific processing process is not repeated here.
As shown in fig. 2, since the frame header of the LTE system is subframe0, if the subframe number offset corresponding to the synchronization time offset is 6, the LTE system performs mobility measurement (LTE measurement) in SFNN, subframe 6.
More preferably, in order to ensure accurate execution of the measurement task, the LTE system may be awakened in advance to capture the LTE callback function, for example, capturing the LTE callback function may be performed once at the start of the subframe of SFNN, subframe6, or capturing the LTE callback function may be performed once at the start of the subframe of SFNN, subframe5 and SFNN, subframe6, respectively, which is not limited herein, and only needs to be performed in the non-working state of the NR system.
In the dual-mode synchronous communication system, if the LTE system is a primary mode communication system and the NR system is an auxiliary mode communication system, the specific synchronization process is the same as that of the LTE system being an auxiliary mode communication system, and if the NR system is a primary mode communication system, and if there are multiple auxiliary mode communication systems, the synchronization process between the primary mode communication system and each auxiliary mode communication system in the corresponding multi-mode synchronous communication system may also be performed according to the LTE system being an auxiliary mode communication system, and the NR system being a primary mode communication system, and the specific process is not repeated here.
The foregoing description is only illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, and it will be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and drawings, and are intended to be included within the scope of the present invention.

Claims (8)

1. A multimode synchronous communication system, comprising:
a frame interrupt clock for generating an interrupt signal;
the processor is respectively connected with the frame interrupt clock and the wireless radio frequency module, and a main mode communication system and at least one auxiliary mode communication system are operated on the processor;
the main mode communication system is used for capturing a main mode callback function according to the interrupt signal for each frame length so as to execute a corresponding communication task and output frame parameters of the main mode callback function;
the auxiliary mode communication system is used for acquiring a synchronous time offset between a frame header of the auxiliary mode communication system and a frame header of the main mode communication system according to the interrupt signal and the frame parameter when a start instruction sent by the wireless radio frequency module is received and the communication task of the main mode communication system is detected to be executed, so as to periodically perform mobility measurement according to the synchronous time offset.
2. The multimode synchronous communication system of claim 1, wherein the frame parameters comprise a frame number, a subframe number, and a slot number of the master mode communication system.
3. The multimode synchronous communication system of claim 1, wherein the wireless radio frequency module comprises:
a receiving antenna for detecting a base station signal of the main mode communication system in real time;
and the signal evaluation unit is connected with the receiving antenna and is used for generating the starting instruction when the signal quality of the main mode communication system is judged to be lower than a preset threshold value according to the base station signal.
4. The multimode synchronous communication system of claim 1, wherein the secondary mode communication system comprises:
a first acquiring unit configured to acquire the frame parameters of the master mode communication system;
and the second acquisition unit is connected with the first acquisition unit and is used for carrying out blind detection on the auxiliary mode signal based on the frame parameter to obtain the synchronous time offset between the frame header of the second acquisition unit and the frame header of the main mode communication system.
5. The multimode synchronous communication system of claim 1 wherein the synchronization time offset comprises a sub-frame number offset and an observation time difference of a frame header of the secondary mode communication system relative to a frame header of the primary mode communication system.
6. The multimode synchronous communication system of claim 5, wherein the secondary mode communication system further comprises:
a first synchronization unit, configured to calculate a subframe number of the secondary mode communication system for performing the mobility measurement according to the subframe number deviation and a frame header of the primary mode communication system;
and the second synchronization unit is connected with the first synchronization unit and is used for starting to capture an auxiliary mode callback function according to at least one subframe number before the mobility measurement subframe number is executed according to the interrupt signal so as to start to execute a corresponding measurement task after reaching the observation time difference after the subframe head of the mobility measurement subframe number.
7. The multimode synchronous communication system of claim 5 wherein the observed time difference is less than one subframe number length.
8. A user terminal comprising a multimode synchronous communication system as claimed in any one of claims 1 to 7.
CN202310178182.0A 2023-02-28 2023-02-28 Multimode synchronous communication system and user terminal Pending CN116208283A (en)

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