CN114222239A - Dynamic RSRP hysteresis tolerance optimization method for communication link switching judgment - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/025—Services making use of location information using location based information parameters
- H04W4/027—Services making use of location information using location based information parameters using movement velocity, acceleration information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/42—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for mass transport vehicles, e.g. buses, trains or aircraft
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/44—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
Abstract
The invention discloses a dynamic optimization method of RSRP hysteresis tolerance for communication link switching judgment, which comprises the following steps: detecting weather conditions in real time, and acquiring corresponding weather influence factors according to the weather conditions
，
(ii) a Real-time detection of terminal speed
(ii) a According to weather influence factor
And terminal velocity
Calculating dynamic RSRP hysteresis margin
(ii) a Adjusting RSRP hysteresis margin to
. According to the method, different weather conditions and corresponding weather influence factors are measured in advance through a vehicle-ground communication test to form a table function, the weather influence factors can be quickly matched according to the weather conditions in the subsequent dynamic adjustment process, and the RSRP hysteresis tolerance is immediately and dynamically adjusted according to the weather influence factors and the terminal speed, so that the terminal can be ensured to reliably switch communication links under different weather conditions and different speed conditions.
Description
Technical Field
The invention relates to the field of communication switching, in particular to a dynamic RSRP hysteresis tolerance optimization method for communication link switching judgment.
Background
With the development of high-speed intelligent railways, the requirements of train-ground communication services are continuously expanded, and the requirements of train-ground communication on the transmitted data volume and real-time performance are continuously improved. Due to the limited coverage of the antenna, in the prior art, a plurality of base stations are generally arranged along a track, and a communication link is switched between the base stations during the driving process of the vehicle-mounted terminal, so as to realize uninterrupted data transmission. And a signal overlapping area is arranged between the adjacent base stations, and the vehicle-mounted terminal switches communication links after driving to the signal overlapping area. When the link is switched, a currently used decision algorithm generally sets a corresponding hysteresis margin based on Reference Signal Received Power (RSRP), and when the RSRP difference between the target base station and the current base station is higher than the hysteresis margin, the switching is triggered.
However, in the existing link handover decision algorithm, the RSRP hysteresis margin is usually set to a fixed value, but in the actual outdoor communication process, the communication quality is obviously affected by the weather conditions and changes, under severe weather conditions, the predicted RSRP received by the base station is obviously reduced, the RSRP difference between the target base station and the current base station when the link handover can be performed is obviously different from the RSRP difference under normal weather conditions, and it is unreasonable to adopt a uniform fixed RSRP hysteresis margin under different weather conditions. In addition, the faster the train speed, the shorter the time for the train to pass through the signal overlapping area, and for the case of high-speed train running, the fixedly set hysteresis tolerance may be too high, so that the train still does not trigger switching after passing through the signal overlapping area, and a signal disconnection condition occurs.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a dynamic optimization method of RSRP hysteresis tolerance for communication link switching judgment.
The purpose of the invention is mainly realized by the following technical scheme:
a method for dynamic optimization of RSRP hysteresis margin for communication link handover decisions, the method comprising the steps of:
detecting weather conditions in real time, and acquiring a corresponding weather influence factor kappa according to the weather conditions, wherein kappa is more than or equal to 1;
detecting the terminal speed v in real time;
calculating a dynamic RSRP hysteresis tolerance delta P' according to the weather influence factor kappa and the terminal speed v;
the RSRP hysteresis margin is adjusted to Δ P'.
Preferably, the dynamic RSRP hysteresis margin Δ P' is calculated by the formula:
ΔP′＝κ[ΔP-(α+β)(n-1)τν]；
Δ P is an RSRP hysteresis margin set corresponding to a normal weather condition, α is an attenuation rate of a transmission power of a terminal signal varying with a distance when the terminal signal is transmitted to a current base station under the normal weather condition, β is an attenuation rate of a transmission power of the terminal signal varying with a distance when the terminal signal is transmitted to a target base station under the normal weather condition, n is a redundant switching number set to ensure that the terminal reliably performs communication link switching in a signal overlapping area, and τ is a time required for performing each communication link switching.
Preferably, the method for obtaining the weather influence factor κ is as follows:
the method comprises the steps that the path loss PL of transmitting power when a terminal signal is transmitted to a base station under the condition of normal weather and the path loss PL' of transmitting power when the terminal signal is transmitted to the base station under the condition of different severe weather are measured in advance;
obtaining weather influence factors kappa corresponding to different weather conditions according to the PL' and PL comparison analysis, and forming a table function corresponding to the weather conditions and the weather influence factors kappa;
and searching and matching a corresponding weather influence factor kappa in the table function according to the weather condition monitored in real time.
Preferably, the relation between the weather influence factor kappa and PL' and PL is
Preferably, the calculated dynamic RSRP hysteresis margin Δ P' is compared to a predetermined RSRP hysteresis margin minimum value Δ P before the RSRP hysteresis margin is adjusted to Δ PminComparing;
when the delta P' is not less than delta PminThen, the RSRP hysteresis margin is adjusted to Δ P'; when in use
Adjusting the RSRP hysteresis margin to Δ Pmin。
In conclusion, the invention has the following beneficial effects: different weather conditions and corresponding weather influence factors are measured in advance through a vehicle-ground communication test to form a table function, the weather influence factors can be quickly matched according to the weather conditions in the subsequent dynamic adjustment process, and the RSRP hysteresis tolerance is dynamically adjusted in real time according to the weather influence factors and the terminal speed, so that the terminal can be ensured to reliably switch communication links under different weather conditions and different speed conditions.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions and advantages of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a flow chart of a method according to an embodiment of the present invention.
Fig. 2 is a table function diagram corresponding to weather conditions and weather influence factors according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages disclosed in the embodiments of the present invention more clearly apparent, the embodiments of the present invention are described in further detail below with reference to the accompanying drawings and the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the embodiments of the invention and are not intended to limit the embodiments of the invention. 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 application. Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout.
It should be noted that the terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or server that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
As shown in fig. 1, the present invention provides a dynamic RSRP hysteresis margin optimization method for communication link handover decision, comprising the following steps:
step 1, detecting weather conditions in real time, and acquiring a corresponding weather influence factor kappa according to the weather conditions, wherein kappa is larger than or equal to 1.
In some embodiments of the present invention, the weather influence factor κ is obtained by:
and step 11, pre-measuring the path loss PL of the transmitting power when the terminal signal is transmitted to the base station under the normal weather condition and the path loss PL' of the transmitting power when the terminal signal is transmitted to the base station under different severe weather conditions, wherein the path loss can be obtained by subtracting the power of the receiving signal of the base station from the transmitting power of the terminal signal.
It should be noted that, when measuring the path loss under normal weather conditions and different severe weather conditions, it should be ensured as much as possible that only the variable of the weather conditions exists, that is, in the different path loss measurements, it should be ensured that factors that may affect the path loss, such as the terminal position, the base station position, the terminal signal transmission power, and the like, are consistent.
In some embodiments of the invention, the weather condition grades can be judged through various weather factors such as rain, snow, fog, dust and the like, each weather can be divided into multiple grades such as normal weather, low severe weather, medium severe weather, high severe weather, extreme severe weather and the like, a weather early warning grade judgment method can be adopted to judge the weather conditions, the weather conditions of the blue, yellow, orange and red weather early warning grades respectively correspond to the weather conditions of the low severe weather, the medium severe weather, the high severe weather and the extreme severe weather, and the rest weather conditions without the early warning grades are the normal weather.
Specifically, when a certain weather factor monitoring index is at a high/ultra-high value, for example, when there is rainfall reaching 50/100 mm, the weather is determined to be severe weather/extreme weather. When a certain weather factor monitoring index is at a medium high value, for example, the visibility of dust is less than 1000 meters, the weather is judged to be medium bad weather. Similarly, when a certain weather factor monitoring index is at a medium-low value, the weather is determined to be low-severe weather.
And step 12, obtaining weather influence factors kappa corresponding to different weather conditions according to the PL' and PL comparison analysis, and forming a table function corresponding to the weather conditions and the weather influence factors kappa.
The path loss is a loss introduced between the transmitter and the receiver due to the propagation space, and can be considered to be mainly affected by the propagation distance and the propagation environment. Since the propagation distance is consistent with the propagation environment except the weather condition in step 11, it can be considered that the variation of the path loss in different severe weather conditions compared to the path loss in normal weather conditions is in a positive correlation linear relationship with the severity of the weather condition, and therefore, in some embodiments of the present invention, the relationship between the weather influence factor κ and PL', PL is
In some embodiments of the present invention, a table function of weather condition ratings and weather impact factors κ for rainy and snowy weather is shown in fig. 2.
Preferably, when a plurality of weather factor monitoring indexes are all in a middle-low weather condition, the corresponding weather influence factors can be added to obtain a final weather influence factor k.
And step 13, searching and matching the corresponding weather influence factor kappa in the table function according to the weather condition monitored in real time. The method for determining the weather condition of the monitoring can refer to step 11, and will not be described herein.
As shown in fig. 1, the method of the present invention further includes step 2, detecting the terminal speed v in real time; and 3, calculating a dynamic RSRP hysteresis tolerance delta P' according to the weather influence factor kappa and the terminal speed v.
Specifically, the dynamic RSRP hysteresis margin Δ P' is calculated as:
ΔP′＝κ[ΔP-(α+β)(n-1)τν]。
wherein, Δ P is the RSRP hysteresis tolerance set under the corresponding normal weather condition; alpha is the attenuation rate of the change of the transmitting power along with the distance when the terminal signal is transmitted to the current base station under the normal weather condition, and can be obtained by testing; beta is the attenuation rate of the change of the transmitting power along with the distance when the terminal signal is transmitted to the target base station under the normal weather condition, and can be obtained by testing; n is a redundancy switching frequency set for ensuring that the terminal reliably switches the communication link in the signal overlapping area, and tau is the time required for switching the communication link each time and can be obtained through testing.
The principle of calculating Δ P' is described below in terms of both weather conditions and terminal speed. Firstly, considering the influence of weather conditions, under normal weather conditions, a judgment formula for switching a communication link after a terminal enters a signal overlapping area is that RSRP (x, j) -RSRP (x, i) ≧ Δ P, x represents the terminal, j represents a target base station, i represents a current base station, RSRP (x, j) represents the receiving power of the target base station j when receiving a terminal x signal at a certain position, and RSRP (x, i) represents the receiving power of the current base station i when receiving a terminal x signal at the same position.
The RSRP of the base station can be expressed as the signal transmission power of the terminal minus the path loss from the terminal to the base station, minus the shadowing fading at the base station, so the decision formula can be transformed into Pt (x) -RL (x, j) -S (x, j, σ) - [ Pt (x) -RL (x, i) -S (x, i, σ ') ] ≧ Δ P, i.e., RL (x, i) -RL (x, j) + S (x, i, σ') -S (x, j, σ) ≧ Δ P. The geographical position difference of two adjacent base stations is not large, the situation difference of the signal blocked by the obstacle is not large, shadow fading is considered to be equal, and therefore, the formula can be further converted into RL (x, i) -RL (x, j) which is not less than delta P.
Since the path loss and the weather condition can be considered to be in a positive correlation linear relationship, and the shadow fading is mainly influenced by the condition that the signal is blocked by an obstacle from the terminal to the base station, and is less influenced by the weather, in the severe weather condition, the difference between the RSRP between the target base station and the current base station can be represented as RSRP ' (x, j) -RSRP ' (x, i) ═ pt (x) - κ RL (x, j) -S (x, j, σ) - [ pt (x) - κ RL (x, i) -S (x, i, σ ') ], i.e. RSRP ' (x, j) -RSRP ' (x, i) — κ RL (x, i) - κ RL (x, j). The terminal communication link switching judgment condition in severe weather can be expressed as RSRP '(x, j) -RSRP' (x, i) ≧ κ Δ P by combining the difference formula RSRP '(x, j) -RSRP' (x, i) ═ κ RL (x, i) - κ RL (x, j) and the normal weather judgment formula RL (x, i) -RL (x, j) ≧ Δ P in severe weather.
Secondly, considering the influence of the terminal speed, because a certain time is needed for communication link switching and redundant switching times are set in the existing train-ground communication to ensure reliable switching in a signal overlapping area, the RSRP hysteresis tolerance set during low-speed running may be too high for a train running at high speed, so that the communication link switching is still not completed after the terminal running at high speed leaves the signal overlapping area. Therefore, in the case of high-speed operation of the terminal, the RSRP hysteresis margin should be appropriately reduced, so that the terminal can perform communication link switching early and ensure that the terminal can complete communication link switching when moving out of the signal overlapping region.
Assuming that the terminal reliably completes the communication link handover under the terminal speed ν, the redundant handover number is set to n, and then the length of the region satisfying the redundant handover condition in the signal overlapping region can be represented as L ═ n-1 τ ν. In specific weather conditions, the terminal drives from entering the area to exiting, and the difference between the RSRP when the terminal exits the area and enters the area can be expressed as RSRP 'for the current base station'2(x,i)-RSRP′1(x, i) — κ α (n-1) τ ν, and the difference between the RSRPs may be represented as RSRP 'for the target base station'2(x,j)-RSRP′1(x, j) ═ κ β (n-1) τ ν, and the combination of the two formulae yields RSRP'2(x,j)-RSRP′1(x,j)-[RSRP′2(x,i)-RSRP′1(x,i)]κ (α + β) (n-1) τ ν, and further converted to RSRP'2(x,j)-RSRP′2(x,i)＝RSRP′1(x,j)-RSRP′1(x,i)+κ(α+β)(n-1)τν。
Since the region is defined as a region satisfying the redundant switching condition in the signal overlapping region, it can be considered that the terminal communication link switching condition is just satisfied when entering the region, that is, the difference between the RSRPs of the two base stations when entering the region should satisfy the RSRP'1(x,j)-RSRP′1(x, i) ≧ kappa delta P, and accordingly the difference formula between the RSRPs of the two base stations satisfies the RSRP when the region is found'2(x,j)-RSRP′2(x, i) ≧ κ Δ P + κ (α + β) (n-1) τ ν. In order to ensure that the terminal can reliably carry out communication link switching under the condition of high-speed movement, the invention reduces the condition that the difference between the RSRP entering the region meets the requirementIs RSRP'1(x,j)-RSRP′1(x, i) ≧ κ Δ P- κ (α + β) (n-1) τ ν, which corresponds to adjusting the RSRP hysteresis margin for determining that the terminal can perform communication link switching to Δ P' ═ κ [ Δ P- (α + β) (n-1) τ ν]。
As shown in fig. 1, the method finally includes step 4, adjusting the RSRP hysteresis margin to Δ P'.
Since the RSRP hysteresis margin is set too low, which may cause a ping-pong handover situation to occur in the terminal, in some embodiments of the present invention, an RSRP hysteresis margin minimum value is preset, and the calculated dynamic RSRP hysteresis margin Δ P' is compared with the preset RSRP hysteresis margin minimum value Δ P before the RSRP hysteresis margin is adjusted to Δ P ″minComparing; when the delta P' is not less than delta PminThen, the RSRP hysteresis margin is adjusted to Δ P'; when in use
Adjusting the RSRP hysteresis margin to Δ Pmin。
According to the method, different weather conditions and corresponding weather influence factors are measured in advance through a vehicle-ground communication test to form a table function, the weather influence factors can be quickly matched according to the weather conditions in the subsequent dynamic adjustment process, and the RSRP hysteresis tolerance is immediately and dynamically adjusted according to the weather influence factors and the terminal speed, so that the terminal can be ensured to reliably switch communication links under different weather conditions and different speed conditions.
It should be noted that: the precedence order of the above embodiments of the present invention is only for description, and does not represent the merits of the embodiments. While certain embodiments of the present disclosure have been described above, other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. A method for dynamic optimization of RSRP hysteresis margin for communication link handover decisions, the method comprising the steps of:
detecting weather conditions in real time, and acquiring corresponding weather influence factors according to the weather conditions
，
；
Real-time detection of terminal speed
；
According to weather influence factor
And terminal velocity
Calculating dynamic RSRP hysteresis margin
；
Adjusting RSRP hysteresis margin to
。
2. The dynamic RSRP hysteresis margin optimization method for communication link handover decision of claim 1, wherein said dynamic RSRP hysteresis margin is defined as
The calculation formula of (2) is as follows:
3. The method of claim 1, wherein the weather-affecting factor is a dynamic optimization of RSRP hysteresis margin for communication link handover decision
The acquisition method comprises the following steps:
pre-measuring the path loss of the transmitting power when the terminal signal is transmitted to the base station under the normal weather condition
And the path loss of the transmitting power when the terminal signal is transmitted to the base station under different severe weather conditions
；
According to
And
obtaining weather influence factors corresponding to different weather conditions through comparative analysis
Forming weather conditions and weather influencing factors
A corresponding table function;
subsequently, according to the weather condition monitored in real time, searching and matching the corresponding weather influence factor in the table function
。
4. According to the rightThe method of claim 3, wherein the weather-affecting factor is a dynamic optimization of RSRP hysteresis margin for communication link handover decisions
And
、
in a relationship of
。
5. Method for dynamic optimization of RSRP hysteresis margin for handover decision of communication links according to any of claims 1 to 4, characterised in that the RSRP hysteresis margin is adjusted to
Previously, dynamic RSRP hysteresis margin to be calculated
With a predetermined minimum value of RSRP hysteresis margin
Comparing;
when in use
Only then the RSRP hysteresis margin is adjusted to
(ii) a When in use
When in use, willThe RSRP hysteresis margin is adjusted to
。
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102724719A (en) * | 2012-06-21 | 2012-10-10 | 浙江大学 | Handover method for mobile communication system of high-speed railway |
| CN106686110A (en) * | 2017-01-16 | 2017-05-17 | 深圳万智联合科技有限公司 | Highway integrated event processing and emergency dispatching system |
| EP3216269A1 (en) * | 2014-11-05 | 2017-09-13 | Telefonaktiebolaget LM Ericsson (publ) | Use of prediction model of the quality of service in a target cell to trigger a handover |
| CN108601053A (en) * | 2018-07-23 | 2018-09-28 | 华东交通大学 | Wireless network switching optimization method under a kind of high-speed railway scene |
| CN110392401A (en) * | 2018-04-16 | 2019-10-29 | 中兴通讯股份有限公司 | Cover grade update method, device, base station, terminal and readable storage medium storing program for executing |
| US20200351690A1 (en) * | 2019-05-02 | 2020-11-05 | Qualcomm Incorporated | User equipment measurement for cross-link interference |
| CN113994608A (en) * | 2019-06-27 | 2022-01-28 | 高通股份有限公司 | Dynamic threshold for antenna switching diversity |
-
2021
- 2021-10-13 CN CN202111189875.7A patent/CN114222239B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102724719A (en) * | 2012-06-21 | 2012-10-10 | 浙江大学 | Handover method for mobile communication system of high-speed railway |
| EP3216269A1 (en) * | 2014-11-05 | 2017-09-13 | Telefonaktiebolaget LM Ericsson (publ) | Use of prediction model of the quality of service in a target cell to trigger a handover |
| CN106686110A (en) * | 2017-01-16 | 2017-05-17 | 深圳万智联合科技有限公司 | Highway integrated event processing and emergency dispatching system |
| CN110392401A (en) * | 2018-04-16 | 2019-10-29 | 中兴通讯股份有限公司 | Cover grade update method, device, base station, terminal and readable storage medium storing program for executing |
| CN108601053A (en) * | 2018-07-23 | 2018-09-28 | 华东交通大学 | Wireless network switching optimization method under a kind of high-speed railway scene |
| US20200351690A1 (en) * | 2019-05-02 | 2020-11-05 | Qualcomm Incorporated | User equipment measurement for cross-link interference |
| CN113994608A (en) * | 2019-06-27 | 2022-01-28 | 高通股份有限公司 | Dynamic threshold for antenna switching diversity |
Non-Patent Citations (4)
| Title |
|---|
| DTR/ITS-0010006: "Technical Report Intelligent Transport Systems (ITS); Vehicular Communications; Basic Set of Applications; Local Dynamic Map (LDM); Rationale for and guidance on standardization", TSI TR 102 863, no. 1 * |
| QUALCOMM EUROPE INC. - SPAIN: "RP-182398 "TR 38.889 v1.0.0 on Study on NR-based access to unlicensed spectrum; for approval"", 3GPP TSG_RAN\\TSG_RAN, no. 82 * |
| 朱豪;彭艺;张申;李启骞;: "基于改进遗传算法的自适应越区切换方案", 吉林大学学报(理学版), no. 01 * |
| 田桂宾;李梅;韩卫国;: "降低大气波导对TD-LTE影响方法的研究", 邮电设计技术, no. 05 * |
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