CN106331296B - Method and circuit for mutual latching of multi-mode timers - Google Patents
Method and circuit for mutual latching of multi-mode timers Download PDFInfo
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- CN106331296B CN106331296B CN201510375534.7A CN201510375534A CN106331296B CN 106331296 B CN106331296 B CN 106331296B CN 201510375534 A CN201510375534 A CN 201510375534A CN 106331296 B CN106331296 B CN 106331296B
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Abstract
The invention relates to the technical field of electronic communication, in particular to a method for mutually latching multi-mode timers, which comprises the following steps that A, a timer in at least one communication mode initiates a latching signal after frame synchronization; b, after receiving the latch signal of any communication mode, latching the timing information of the timer; step C, extracting the latch value of the timing information of each communication mode; and D, taking the current working mode as a master communication mode and other communication modes as slave communication modes, establishing a timing relation between the master communication mode and the other slave communication modes, and obtaining a timer timing value of a preset slave communication mode when the master communication mode is in the next time slot according to the timing relation. The method for mutually latching the multi-mode timer has strong operability and realizability, has relatively transparent operation of each mode, and is more suitable for large-scale mass production products.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a method and a circuit for mutually latching a multi-mode timer.
Background
The development of mobile communication technology has gone through from the first generation analog mobile communication providing only voice service to the second generation mobile communication technology (2G), further to the third generation mobile communication technology (3G), and up to the fourth generation mobile communication technology (4G), and the fifth generation mobile communication technology (5G) facing the development of mobile communication technology in 2020, the second generation mobile communication system and the third generation mobile communication system already have a huge user group, the fourth generation mobile communication system also has a certain number of users, and various mobile communication systems will coexist for a long time, so that the multimode mobile communication terminal will still be the mainstream of the application. However, when the existing multi-mode mobile terminal switches and interoperates among various modes, the maintenance of the mutual timing relationship is a difficult problem.
The prior art discloses a method and a device for timing a multimode terminal system clock, which find a timing precision meeting two modes simultaneously by utilizing the relative relation of the timing precision of TD-SCDMA and TD-LTE, and design a shared timer based on the timing precision. And then abstracting the relation of the TD-SCDMA and the TD-LTE relative to the precision of the shared timer according to the respective radio frame structures of the TD-SCDMA and the TD-LTE. In the TD-SCDMA and TD-LTE terminals, the timing circuit shared by the TD-SCDMA and TDD-LTE circuits is used to maintain the relative timing relationship between TD-SCDMA and TDD-LTE in real time, but in the multimode mobile terminal with coexisting 2G technology, 3G technology and 4G technology, because the timing precision of 2G technology is not the same as that of 3G technology and 4G technology, considering that 2G technology is mature and the product development period is long, for such multimode terminal, the 2G timer is not allowed to be modified, and under the condition of limited clock frequency and no timing deviation, there is no way to use a timer with uniform precision to complete the maintenance of the timing relationship between the modes.
Disclosure of Invention
The invention aims to provide a method and a circuit for mutually latching a multi-mode timer, which can solve the difficult problems of the switching among various communication modes and the maintenance of the mutual timing relation during interoperation in a multi-mode mobile terminal.
The technical problem solved by the invention can be realized by adopting the following technical scheme:
a method for mutually latching multi-mode timers, wherein for a mobile terminal having timers for N different communication modes, comprises the steps of:
step A, at least one timer of the communication mode initiates a latch signal after frame synchronization;
b, after receiving a latch signal of any communication mode, latching timing information of a timer corresponding to the communication mode;
step C, extracting the latch value of the timing information of each communication mode;
and D, taking the current working mode as a master communication mode and other communication modes as slave communication modes, establishing a timing relationship between the master communication mode and the other slave communication modes, and obtaining a preset timer timing value of the slave communication mode when the master communication mode is in the next time slot according to the timing relationship.
The method for mutually latching the multi-mode timers of the invention further comprises, after the step D,
step E, in the time slot of the main communication mode, measuring a preset slave communication mode;
and F, adjusting the frame synchronization timing information of each communication mode according to the measurement results of the slave communication mode and the master communication mode, and returning to the step A.
In the method for mutually latching the multi-mode timers, in the step a, the timer of each communication mode initiates the latching signal at regular time.
In the method for mutually latching the multi-mode timers, the first latching signal in the step A is generated after the timing synchronization of the corresponding communication modes.
The multi-mode timer mutual latching method of the invention is characterized in that the latching signal is generated by level triggering or pulse triggering.
In the method for mutually latching the multi-mode timers, in the step B, the timing information of the timers in all the active modes is latched at the same time after any latching signal is received.
In the step C, in a currently operating master communication mode, after all slave communication modes complete timing information latching, a latched value of each communication mode is extracted.
In the step D, the timing relationship is established by the following formula:
the timer timing value of the jth slave communication mode is equal to rirj (Gi-Ri) + Rj,
wherein Gi is the time from the next time slot (gap) of the current master communication mode;
ri is a latch value of timing information of the current main communication mode;
(Gi-Ri) slave latching the value R for the current master communication modeiTo GiThe deviation value of (a);
rj is a latched value of timing information of the jth slave communication mode;
rirj is the proportional relation of the timing step from the timer of the current master communication mode to the timer of the jth slave communication mode.
The multi-mode timer mutual latching circuit of the invention is used for implementing the method, comprising,
the N timing latch capturing units are respectively arranged aiming at each communication mode, and each timing latch capturing unit is correspondingly connected with a timer and used for capturing a latch signal initiated by the timer and sending a capturing notice;
and the N timing latch value units are respectively connected with the N timing latch capturing units, receive the capturing notice sent by the timing latch capturing units and capture the timing information of the timer corresponding to the timing latch capturing unit sending the capturing notice in real time.
In the circuit for mutually latching the multi-mode timers, each timing latching value unit comprises a register for recording the latching value of the corresponding timer.
The multi-mode timer of the invention is a circuit latched with each other, and the plurality of communication modes comprise a 2G communication mode, and/or a 3G communication mode, and/or a 4G communication mode.
Has the advantages that: due to the adoption of the technical scheme, the method for mutually latching the multi-mode timer has the advantages of strong operability, realizability and relatively transparent operation of each mode, and is more suitable for large-scale mass production products.
Drawings
FIG. 1 is a flow chart of a method of the present invention;
FIG. 2 is a flow chart of an improved method of the present invention;
FIG. 3 is a circuit configuration diagram of the multi-mode timer of the present invention latching with each other;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
The invention provides a method for mutually latching multi-mode timers, which is used for a mobile terminal with N timers with different communication modes and comprises the following steps of:
step A, a timer in at least one communication mode initiates a latch signal after frame synchronization;
b, after receiving the latch signal of any communication mode, latching the timing information of the timer corresponding to the communication mode;
step C, extracting the latch value of the timing information of each communication mode;
and D, taking the current working mode as a master communication mode and other communication modes as slave communication modes, establishing a timing relation between the master communication mode and the other slave communication modes, and obtaining a timer timing value of the preset slave communication mode when the master communication mode is in the next time slot according to the timing relation.
The method for mutually latching the multi-mode timers of the present invention further includes, with reference to fig. 2:
step E, in the time slot of the main communication mode, measuring other slave communication modes;
and F, adjusting the frame synchronization timing information of each communication mode according to the measurement results of the slave communication mode and the master communication mode, and returning to the step A.
As a specific embodiment of the present invention, in step a, the initiation of each mode latch signal has no requirement on any order; specifically, the timer of each communication mode is used for timing the initiating latch signal or directly configuring the initiating latch signal according to software, and the master communication mode and the slave communication mode are not distinguished when the initiating latch signal is initiated.
As a specific embodiment of the present invention, the latch signal is generated by level triggering or pulse triggering. Each latch signal may be timing initiated and may be specifically associated with a frame timing structure of each communication mode. Or may be initiated by configuration.
As a further improvement of the present invention, the initial latch initiation or first latch signal in step a is generated after the corresponding communication mode timing synchronization.
In the method for mutually latching the multi-mode timers, in the step B, after receiving any latching signal, the timer information of all the active modes is latched at the same time. Specifically, after the latch signal of any mode is sent to the circuit for latching the multimode timers of the present invention, the latch circuit will latch the timer information of all active modes at the same time, where the active mode refers to a mode supported by a certain product form, such as a WCDMA/GSM/LTE terminal, and the active modes include a WCDMA mode, a GSM mode, and an LTE mode.
In a specific embodiment of the present invention, in the method for mutually latching the multi-mode timers according to the present invention, in step C, after all slave communication modes complete the latching of the timing information in a master communication mode, the latched values of the respective communication modes are extracted. The master communication mode may be any standard of any communication mode, and the slave communication mode may also be any standard of any communication mode, for example, the master communication mode may be a GSM standard, a GPRS standard, or an EDGE standard of a 2G communication mode, and may also be a TD-SCDMA standard, a WCDMA standard of a 3G communication mode, or a TDD-LTE standard or an FDD-LTE standard of a 4G communication mode.
As a specific embodiment of the present invention, in the method for mutually latching the multi-mode timers according to the present invention, in step D, the timing relationship is established by the following formula:
the timer timing value of the jth slave communication mode is equal to rirj (Gi-Ri) + Rj,
wherein Gi is the time from the next time slot (gap) of the current master communication mode;
ri is a latch value of timing information of the current main communication mode;
(Gi-Ri) slave latching the value R for the current master communication modeiTo GiThe deviation value of (a);
rj is a latched value of timing information of the jth slave communication mode;
rirj is the proportional relation of the timing step from the timer of the current master communication mode to the timer of the jth slave communication mode. The values of i and j can be 2, 3 and 4, such as G2Indicating the time from the next time slot when the 2G communication mode is the primary communication mode.
In a multimode communication system, the next time slot occurs periodically to process tasks in other slave communication modes in the master communication mode.
As an embodiment of the foregoing, the extracted values of the respective communication modes are set as follows: the 2G latch value is R2; the 3G latch value is R3; the 4G latch value is R4;
the relative relationship of the timing steps among the timers is as follows:
the proportional relationship from the 2G timer to the 3G timer is r2r 3;
the proportional relationship from the 2G timer to the 4G timer is r2r 4;
the proportional relationship from the 3G timer to the 2G timer is r3r 2;
the proportional relationship from the 3G timer to the 4G timer is r3r 4;
the proportional relationship from the 4G timer to the 2G timer is r4r 2;
the proportional relationship from the 4G timer to the 3G timer is r4r 3;
in the first case: when the primary communication mode is 2G, assuming that the time of 2G from the next time slot is G2, the timing relationship is maintained as follows:
the deviation value of 2G from R2 to G2 is G2-R2;
then, at time slot 2G:
the timer count value from the communication pattern 3G is R2R3 (G2-R2) + R3;
the timer count value from the communication pattern 4G is R2R4 (G2-R2) + R4;
in the second case: when the primary communication mode is 3G, assuming that the time of 3G from the next time slot (gap) is G3, the timing relationship is maintained as follows:
the deviation value of 3G from R3 to G3 is G3-R3;
then, at the time of the 3G slot:
the timer count value from communication mode 2G is R3R2 (G3-R3) + R2;
the timer count value from the communication pattern 4G is R3R4 (G3-R3) + R4;
in the third case: when the primary communication mode is 4G, assuming that the time of 4G from the next time slot (gap) is G4, the timing relationship is maintained as follows:
the deviation value of 4G from R4 to G4 is G4-R4;
then, at gap of 4G:
the timer count value from communication mode 2G is R4R2 (G4-R4) + R2;
the timer count value from the communication pattern 3G is R4R3 (G4-R4) + R3;
in step E of the present invention, if there are some synchronization or measurement slots of the slave communication mode in the slot of the master communication mode, the measurement of the corresponding mode can be planned.
As an example, in a time slot of a 2G primary communication mode, if there is a synchronization or measurement time slot of 3G, a measurement task of 3G may be planned; if the 4G synchronization or measurement time slot exists, the 4G measurement task can be planned;
for another example, in a time slot of a 3G primary communication mode, if there is a 2G synchronization or measurement time slot, a 2G measurement task may be planned; if the 4G synchronization or measurement time slot exists, the 4G measurement task can be planned;
as another example, in a time slot of the 4G primary communication mode, if there is a 2G synchronization or measurement time slot, a 2G measurement task may be planned; if the 4G synchronization or measurement time slot exists, the software can plan the 3G measurement task;
the main communication mode can be any mode of 2G, 3G and 4G; the slave communication mode can be any mode of 2G, 3G and 4G; the measurement task planning of the slave mode has no precedence requirement.
The invention not only provides a mechanism for interlocking the multi-mode timer, but also has stronger operability and realizability, and the operation of each mode is relatively transparent, thereby being more suitable for large-scale mass production products. Meanwhile, based on the mechanism, a circuit for interlocking the multimode timer is provided, and the problem of mutual timing relationship maintenance during the switching and interoperation of modes such as GSM, GPRS, EDGE, TD-SCDMA, WCDMA, TDD-LTE, FDD-LTE and the like in the multimode mobile terminal can be solved.
In particular, the invention provides a circuit for mutual latching of multi-mode timers, which is used for the method, and comprises the following steps,
the N timing latch capturing units are respectively arranged aiming at each communication mode, and each timing latch capturing unit is correspondingly connected with a timer and used for capturing a latch signal initiated by the timer and sending a capturing notice;
and the N timing latch value units are respectively connected with the N timing latch capturing units, receive the capturing notice sent by the timing latch capturing units and capture the timing information of the timer corresponding to the timing latch capturing unit sending the capturing notice in real time.
The invention completes the maintenance of the relative relation of the frame timing information of each communication mode with little overhead on hardware, can realize the maintenance of the timing relation of each communication mode, and has the advantages of simple circuit realization, low resource overhead and high flexibility.
Each of the above-mentioned timing latch value units should include a register for recording a latch value of the corresponding timer.
As a specific embodiment, referring to fig. 3, a 2G timing latch capture unit 11, a 3G timing latch capture unit 12, and a 4G timing latch capture unit 13 are included, the 2G timing latch capture unit is connected to the 2G timer 10, the 3G timing latch capture unit is connected to the 3G timer 20, and the 4G timing latch capture unit is connected to the 4G timer 30.
The 2G timing latch capturing unit 11 is used for capturing a latch signal initiated by the 2G timer 10 and notifying the captured information to the 2G timing latch value unit 21, the 3G timing latch value unit 22 and the 4G timing latch value unit 23;
the 3G timing latch capturing unit 11 is configured to capture a latch signal initiated by the 3G timer 20 and notify the captured information to the 2G timing latch value unit 21, the 3G timing latch value unit 22, and the 4G timing latch value unit 23;
the 4G timing latch capturing unit 23 is configured to capture a latch signal initiated by the 4G timer 30 and notify the captured information to the 2G timing latch value unit 21, the 3G timing latch value unit 22, and the 4G timing latch value unit 23;
after the 2G timing latch value unit 21 initiates a capture notification by the 2G timing latch capture unit 11, the 3G timing latch capture unit 12, or the 4G timing latch capture unit 13, the 2G timing latch value unit 21 captures the current 2G timing information in real time and records the current 2G timing information in a register corresponding to one another;
after the capture notification is initiated by the 2G timing latch capture unit 11, the 3G timing latch capture unit 12 or the 4G timing latch capture unit 13, the 3G timing latch value unit 22 captures the current 3G timing information in real time and records the current 3G timing information in the one-to-one corresponding register;
after the capture notification is initiated by the 2G timing latch capture unit 11, the 3G timing latch capture unit 12, or the 4G timing latch capture unit 13, the 4G timing latch value unit 23 captures the current 4G timing information in real time, and records the information in the one-to-one corresponding register.
The invention completes the maintenance of the relative relation of the frame timing information of each communication mode with very small overhead on hardware, can realize the maintenance of the timing relation of each communication mode, and has the advantages of simple realization, low resource overhead and high flexibility on a circuit; meanwhile, the mechanism and the circuit do not need to modify the existing timer of each communication mode, and can be completely compatible with the existing software architecture.
Under a certain precision tolerance, the invention can also calculate and maintain the timing relative relation of each communication mode through software, read the timing information of each communication mode in real time, and record the numerical value of each communication mode after synchronization is completed. However, since the software operation itself is performed serially, when reading the value of a certain mode, the timers of other modes are still working, and therefore the accuracy is slightly poor.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. A method for mutually latching multi-mode timers, for a mobile terminal having N timers of different communication modes, comprising the steps of:
step A, at least one timer of the communication mode initiates a latch signal after frame synchronization;
b, after receiving a latch signal of any communication mode, latching timing information of a timer corresponding to the communication mode;
step C, extracting the latch value of the timing information of each communication mode;
step D, taking the current working mode as a master communication mode and other communication modes as slave communication modes, establishing a timing relationship between the master communication mode and the other slave communication modes, and obtaining a timer timing value of the preset slave communication mode when the master communication mode is in the next time slot according to the timing relationship;
in the mobile terminal, a timing latch capturing unit is respectively arranged aiming at each communication mode, each timing latch capturing unit is correspondingly connected with a timer, and each timing latch capturing unit is correspondingly connected with a timing latch value unit;
in step B, the corresponding timed latch capture unit is used to capture the latch signal initiated by the timer and send out a capture notification, and then the corresponding timed latch value unit is used to receive the capture notification sent by the timed latch capture unit and capture the timing information of the timer corresponding to the timed latch capture unit sending out the capture notification in real time.
2. The method of claim 1, wherein after step D, further comprising,
step E, in the time slot of the main communication mode, measuring a preset slave communication mode;
and F, adjusting the frame synchronization timing information of each communication mode according to the measurement results of the slave communication mode and the master communication mode, and returning to the step A.
3. The method for latching the multi-mode timers with each other according to claim 1, wherein in the step a, the timer of each communication mode is timed to initiate the latching signal.
4. The method of claim 1, wherein the latch signal is generated by level triggering or pulse triggering.
5. The method of claim 1, wherein a first one of said latch signals in said step a is generated after timing synchronization of a corresponding one of said communication modes.
6. The method for latching the timers of claim 1, wherein in step B, the timing information of all active mode timers is latched at the same time after receiving any one of the latch signals.
7. The method of claim 1, wherein in step D, the timing relationship is established by the following equation:
the timer timing value of the jth slave communication mode is equal to rirj (Gi-Ri) + Rj,
wherein Gi is the time from the next time slot (gap) of the current master communication mode;
ri is a latch value of timing information of the current main communication mode;
(Gi-Ri) is an offset value from the latch value Ri to Gi of the current master communication mode;
rj is a latched value of timing information of the jth slave communication mode;
rirj is the proportional relation of the timing step from the timer of the current master communication mode to the timer of the jth slave communication mode.
8. A multi-mode timer latching circuit for implementing the method of claim 1, comprising,
the N timing latch capturing units are respectively arranged aiming at each communication mode, and each timing latch capturing unit is correspondingly connected with a timer and used for capturing a latch signal initiated by the timer and sending a capturing notice;
and the N timing latch value units are respectively connected with the N timing latch capturing units, receive the capturing notice sent by the timing latch capturing units and capture the timing information of the timer corresponding to the timing latch capturing unit sending the capturing notice in real time.
9. The multi-mode timer latching circuit of claim 8, wherein each of said timing latch value units comprises a register for recording a latch value of a corresponding said timer.
10. A multi-mode timer inter-latching circuit as claimed in claim 8, wherein said communication modes comprise a 2G communication mode, and/or a 3G communication mode, and/or a 4G communication mode.
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