CN110430021B - LTE cluster service processing method, base station and user equipment - Google Patents
LTE cluster service processing method, base station and user equipment Download PDFInfo
- Publication number
- CN110430021B CN110430021B CN201910725049.6A CN201910725049A CN110430021B CN 110430021 B CN110430021 B CN 110430021B CN 201910725049 A CN201910725049 A CN 201910725049A CN 110430021 B CN110430021 B CN 110430021B
- Authority
- CN
- China
- Prior art keywords
- prach
- base station
- station enb
- coding scheme
- threshold
- 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
- 238000003672 processing method Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 17
- 230000000875 corresponding effect Effects 0.000 claims description 13
- 125000004122 cyclic group Chemical group 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 5
- 230000002596 correlated effect Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 12
- 238000010586 diagram Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention belongs to the technical field of trunking communication, and particularly relates to an LTE trunking service processing method, a base station and user equipment, wherein the method comprises the steps that the user equipment UE receives and demodulates service data carried by a Physical Downlink Shared Channel (PDSCH), judges whether the service data is correctly demodulated or not, and sends a PRACH signal to a base station eNB based on a judgment result; and the base station eNB divides the signal power into three threshold intervals through a preset first threshold and a preset second threshold, and the base station eNB adjusts a real-time modulation and coding scheme MCS according to the threshold interval in which the power of the PRACH signal is located. The method of the invention solves the problem of low transmission efficiency of the trunking system caused by the fixed modulation coding scheme MCS adopted for dispatching the trunking service in the prior art. By the method, the modulation coding scheme MCS of the trunking service is dynamically adjusted, and the user experience is improved while the transmission efficiency of the trunking system is maximized.
Description
Technical Field
The invention belongs to the technical field of trunking communication, and particularly relates to an LTE (long term evolution) trunking service processing method, a base station and user equipment.
Background
An LTE (Long Term Evolution) trunking communication system is a professional wireless communication system developed to meet the demand of industry user command and scheduling and oriented to specific industry applications, and a large number of wireless users in the system share a small number of wireless channels and use command and scheduling as a main application, and the system is a wireless communication system with IP-based system, diversified services and wide data bandwidth. The cluster communication system has wide application markets in the fields of government departments, public safety, emergency communication, electric power, civil aviation, petrochemical industry, army and the like. Trunking service is a typical point-to-multipoint service model. In a group of trunking users, only one talk-right user is sending data (e.g., voice or video); one or more non-speaking users receive the downstream data. The non-speaking-right user may not establish connection with the base station and may not feed back to the base station whether the trunking service data is correctly received.
In the prior art, a fixed Modulation and Coding Scheme (MCS) is often adopted for scheduling trunking services, but if the MCS is too low, the transmission efficiency is very low; if too high, this results in a poor user experience.
How to obtain the maximum transmission efficiency by dynamically adjusting the modulation and coding scheme MCS is a problem to be solved urgently by the trunking system in the prior art, and at the same time, it is ensured that the user experience is ensured.
Disclosure of Invention
The method and the device solve the above problems in the prior art, that is, solve the problem of poor user experience caused by adopting a fixed modulation and coding scheme for scheduling of the trunking service in the prior art.
In a first aspect of the present invention, a method for processing an LTE trunking service is provided, including:
a base station eNB configures a random access channel PRACH corresponding to a cluster group, and sends resource configuration information of the random access channel PRACH to user equipment UE in the cluster group;
the User Equipment (UE) receives and demodulates service data from a base station eNB carried by a Physical Downlink Shared Channel (PDSCH), and determines whether the service data is correctly demodulated or not through CRC (cyclic redundancy check); if the service data is not demodulated correctly, the user equipment UE is connected with the PRACH according to the resource configuration information of the PRACH, and sends a PRACH signal to the base station eNB through the PRACH;
the base station eNB passes a preset first threshold U 1 And a second threshold value U 2 Dividing the signal power into three threshold intervals, and measuring the power P of the PRACH signal in real time s The located threshold interval adjusts the real-time modulation and coding scheme MCS.
As a preferred embodiment, said first threshold value U 1 The formula of (2) is:
U 1 ＝P n +λ 1
the second threshold value U 2 The formula of (1) is:
U 2 ＝P n +λ 2
wherein, P n As noise power, λ 1 And λ 2 Is a predetermined threshold parameter, λ 1 Greater than λ 2 。
As a preferred embodiment, said "according to the power P of said PRACH signal s The real-time modulation and coding scheme MCS "of the threshold interval adjustment comprises the following steps:
when P is present s ＞U 1 Then, the base station eNB reduces the real-time modulation coding mode MCS according to a preset order;
when U is turned 2 ≤P s ≤U 1 When the modulation coding scheme is adopted, the original modulation coding scheme MCS is kept;
when P is s ＜U 2 And then, the base station eNB increases the real-time modulation coding scheme MCS according to the preset order.
As a preferred embodiment, said λ 1 Is taken to be 0dBm, said lambda 2 The value of (d) is-6 dBm.
As a preferred embodiment, the predetermined order is first order.
As a preferred embodiment, the resource configuration information of the PRACH includes: the method comprises the steps of a PRACH preamble format, a PRACH preamble index, a PRACH frequency domain resource position, a PRACH time domain resource position, a PRACH sending period and a preamble receiving target power.
As a preferred embodiment, the UE obtains PRACH resource configuration information of a cluster group in which the UE is located through a cluster system message and/or a cluster paging message.
In a second aspect of the present invention, there is provided a base station eNB, including:
a configuration module, configured to configure PRACH resources of a random access channel of each cluster group;
the scheduling module is used for scheduling the downlink cluster service according to the initial modulation coding scheme MCS;
the detection module is used for detecting a threshold interval where the power of the PRACH signal sent by the user equipment UE is located;
and the adjusting module is used for adjusting the modulation and coding scheme MCS for the base station scheduling in real time according to the threshold interval where the power of the PRACH signal is located.
In a third aspect of the present invention, a UE is provided, including:
the system comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring resource configuration information of a random access channel PRACH (physical random access channel) sent by a base station eNB;
the demodulation module is used for demodulating cluster service data carried by a base station eNB in a physical downlink shared channel PDSCH;
and the sending module is used for judging whether the trunking service data is correctly demodulated or not and sending the PRACH to a base station eNB after determining that the trunking service data is not correctly demodulated.
The invention has the beneficial effects that: the invention discloses an LTE cluster service processing method, which comprises the steps of configuring a random access channel (PRACH) corresponding to a cluster group through a base station eNB, and sending resource configuration information of the PRACH to User Equipment (UE) in the cluster group; user Equipment (UE) receives and demodulates service data from a base station eNB carried by a Physical Downlink Shared Channel (PDSCH), determines whether the service data are correctly demodulated or not through CRC (cyclic redundancy check), if the service data are not correctly demodulated, the UE is connected with a random access channel (PRACH) according to resource configuration information of the PRACH, and sends a PRACH signal to the base station eNB through the PRACH; the base station eNB measures the power of the PRACH signal based on the existing PRACH detection algorithm, and the base station eNB divides the signal power into three threshold intervals through a preset first threshold and a preset second threshold; and adjusting a real-time Modulation Coding Scheme (MCS) according to the threshold interval of the power of the PRACH signal. The method of the invention solves the problem of low transmission efficiency of the trunking system caused by the fixed modulation coding mode MCS adopted for dispatching the trunking service in the prior art. Meanwhile, the modulation coding scheme MCS of the trunking service is dynamically adjusted, so that the transmission efficiency of the trunking system is maximized, and the user experience is improved.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic flowchart of an LTE trunking service processing method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a base station eNB according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a user equipment UE according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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.
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the related invention are shown in the drawings.
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict.
The invention discloses a method for processing LTE cluster services, which comprises the following steps:
a base station eNB configures a random access channel PRACH corresponding to a cluster group, and sends resource configuration information of the random access channel PRACH to user equipment UE in the cluster group;
the User Equipment (UE) receives and demodulates service data from a base station eNB carried by a Physical Downlink Shared Channel (PDSCH), and determines whether the service data is correctly demodulated or not through CRC (cyclic redundancy check);
if the service data is not demodulated correctly, the user equipment UE is connected with the PRACH according to the resource configuration information of the PRACH, and sends a PRACH signal to the base station eNB through the PRACH;
the base station eNB measures the power P of the PRACH signal based on the existing PRACH detection algorithm s ；
The base station eNB passes through a preset first threshold U 1 And a second threshold value U 2 Dividing the signal power into three threshold intervals and according to the power P of the PRACH signal s The located threshold interval adjusts the real-time modulation and coding scheme MCS.
By the method, the cluster service system can adjust the modulation coding mode MCS of the cluster service in real time, the problem of low transmission efficiency of the cluster system caused by the fixed MCS mode adopted by the dispatching of the cluster service in the prior art is solved, and the user experience is improved while the transmission efficiency of the cluster system is maximized.
In order to more clearly describe the LTE trunking service processing method of the present invention, each step of the present invention is described in detail below with reference to the embodiments and the accompanying drawings.
Example one
Fig. 1 is a schematic flowchart of an LTE trunking service processing method according to an embodiment of the present invention; as shown in fig. 1, an LTE trunking service processing method according to an embodiment of the present invention includes:
s100, a base station eNB configures a random access channel PRACH corresponding to a cluster group, and sends resource configuration information of the random access channel PRACH to user equipment UE in the cluster group;
the resource configuration information of the random access channel PRACH comprises a preamble format of the PRACH, a preamble index of the PRACH, a frequency domain resource position of the PRACH, a time domain resource position of the PRACH, a PRACH sending period and preamble receiving target power.
When the base station eNB configures PRACH resources for different cluster groups, at least one of a preamble index of the corresponding PRACH, a frequency domain resource position of the PRACH and a time domain resource position index of the PRACH is different.
And the base station eNB sends the resource configuration information of the PRACH to User Equipment (UE) in the cluster group through cluster system information or/and cluster paging information.
And the UE obtains the PRACH resource configuration information of the cluster group in which the UE is located through cluster system information or/and cluster paging information.
S200, User Equipment (UE) receives and demodulates service data from a base station eNB carried by a Physical Downlink Shared Channel (PDSCH), and determines whether the service data are correctly demodulated or not through CRC (cyclic redundancy check); and if the service data is not demodulated correctly, the user equipment UE is connected with the PRACH according to the resource configuration information of the PRACH, and sends PRACH signals to the base station eNB through the PRACH.
User Equipment (UE) firstly detects a Physical Downlink Control Channel (PDCCH) scrambled based on a Group-Radio Network Temporary Identifier (G-RNTI) so as to obtain scheduling information of a corresponding PDSCH, such as MCS, new data indication and the like. Then, whether the service data is correctly demodulated is determined through CRC check.
For retransmission data, if the same packet data corresponding to the last transmission is correctly demodulated, the data carried by the PDSCH is considered to be correctly demodulated; if the same packet data corresponding to the last transmission is not correctly demodulated, combining demodulation is performed. If the data carried by at least one Physical Downlink Shared Channel (PDSCH) in all downlink subframes in a time period is not correctly demodulated, transmitting a PRACH signal to the base station eNB on a corresponding time-frequency resource according to PRACH resource configuration information; otherwise, no PRACH signal is sent.
The length of the time period is consistent with that of the PRACH sending period, and a configurable offset exists between the starting time of the time period and the PRACH sending time. The unit of the offset is a subframe, and 1 subframe is 1 ms. For example, the PRACH transmission period is 20ms, the starting time is 0ms according to the protocol, that is, the count starts from 0, and the time when the terminal transmits the PRACH is a subframe corresponding to 8 ms; considering that the time for the terminal demodulation processing is 4ms, a preferred value of the starting time of the time period may be 5ms, that is, the demodulation status of the service data transmitted by the physical downlink shared channel PDSCH corresponding to 5ms to 24ms, and the PRACH transmission timing corresponding to 28ms is fed back, where the offset is 5. The offset can take other values, and 5 can be fed back in time.
S300, dividing the signal power into three threshold intervals by the base station eNB through a preset first threshold and a preset second threshold, and measuring the power P of the PRACH signal in real time s The located threshold interval adjusts the real-time modulation and coding scheme MCS.
The first threshold is obtained by formula (1):
U 1 ＝P n +λ 1 ……(1)
the second threshold is obtained by equation (2):
U 2 ＝P n +λ 2 ……(2)
wherein, U 1 Is a first threshold value, U 2 Is a second threshold value, P n As noise power, λ 1 And λ 2 Is a predetermined threshold parameter, λ 1 Greater than λ 2 。
In this embodiment, λ 1 Is taken to be 0dBm, lambda 2 The value of (d) is-6 dBm.
When P is s ＞U 1 When the current time is, it shows that more user equipment UE feeds back PRACH signals to the base station eNB, and the error rate of service data demodulation is proved to be higher, and the base station eNB reduces a real-time modulation coding mode MCS according to a preset order;
when U is formed 2 ≤P s ≤U 1 Then, it is shown that a small amount of user equipment UE feeds back PRACH signals to the base station eNB, which proves that the error rate of service data demodulation at this time is low, and thus the original modulation and coding scheme MCS is maintained;
when P is present s ＜U 2 And then, it is shown that there are few or even no User Equipment (UE) feeding back PRACH signals to the base station eNB, which proves that the error rate of service data demodulation is extremely low at this time, and the base station eNB increases the real-time modulation and coding scheme MCS according to the preset order.
The preset order can be set according to the requirement of a user, and the value of the preset order is positively correlated with the rate of adjusting the Modulation and Coding Scheme (MCS), that is, the rate of the Modulation and Coding Scheme (MCS) is increased along with the increase of the value of the preset order. In this embodiment, the value of the preset order is one order.
It should be noted that there is a range according to the protocol modulation and coding scheme MCS, and it is not possible to adjust the MCS after reaching the upper limit or the lower limit.
Example two
According to the relationship between the signal power and the signal-to-noise ratio, the signal-to-noise ratio is equal to the difference between the signal power and the noise power, and S300 in the first embodiment may be replaced by a 300.
For convenience and brevity of description, the same steps as those in the first embodiment are not described in detail in this embodiment.
A300, the base station eNB divides the signal-to-noise ratio into three threshold intervals through a preset first threshold and a preset second threshold, and adjusts a real-time modulation coding scheme MCS according to the threshold interval in which the signal-to-noise ratio SNR of the PRACH signal is measured in real time.
At this time, the first threshold value U 1 Is 0dB, a second threshold value U 2 Is-6 dB.
When SNR > U 1 And then, it is shown that more User Equipment (UE) feed back PRACH signals to the base station eNB, which proves that the error rate is higher at the moment, and the base station eNB reduces the real-time modulation coding mode MCS according to the preset order.
When U is formed 2 ≤SNR≤U 1 Then, it is shown that a small amount of user equipment UE feeds back PRACH signals to the base station eNB, which proves that the bit error rate is low at this time, and thus the original modulation and coding scheme MCS is maintained;
when SNR < U 2 And then, it is shown that there are very few or even no user equipment UE feeding back PRACH signals to the base station eNB, and the base station eNB increases the real-time modulation and coding scheme MCS according to the preset order.
Based on the same technical concept as the above method embodiment, the present invention further provides a base station eNB, as shown in fig. 2, including:
a configuration module, configured to configure PRACH resources of a random access channel of each cluster group;
the scheduling module is used for scheduling the downlink cluster service according to the initial modulation coding scheme MCS;
the detection module is used for detecting a threshold interval where the power of the PRACH signal sent by the user equipment UE is located;
and the adjusting module is used for adjusting the modulation and coding scheme MCS for the base station scheduling in real time according to the threshold interval where the power of the PRACH signal is located.
Meanwhile, based on the same technical concept as the above calculation method embodiment, the present invention further provides a user equipment UE, as shown in fig. 3, including:
the system comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring resource configuration information of a random access channel PRACH (physical random access channel) sent by a base station eNB;
the demodulation module is used for demodulating cluster service data carried by a base station eNB in a physical downlink shared channel PDSCH;
and the sending module is used for judging whether the trunking service data is correctly demodulated or not and sending the PRACH to a base station eNB after determining that the trunking service data is not correctly demodulated.
The terms "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing or implying a particular order or sequence.
The terms "comprises," "comprising," or any other similar term are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (8)
1. An LTE cluster service processing method is characterized by comprising the following steps:
a base station eNB configures a random access channel PRACH corresponding to a cluster group, and sends resource configuration information of the random access channel PRACH to user equipment UE in the cluster group;
the User Equipment (UE) receives and demodulates service data from a base station eNB carried by a Physical Downlink Shared Channel (PDSCH), and determines whether the service data is correctly demodulated or not through CRC (cyclic redundancy check); if the service data is not demodulated correctly, the user equipment UE is connected with the PRACH according to the resource configuration information of the PRACH, and sends a PRACH signal to the base station eNB through the PRACH;
the base station eNB passes a preset first threshold U 1 And a second threshold value U 2 Dividing the signal power into three threshold intervals, and measuring the power P of the PRACH signal in real time s Adjusting a real-time Modulation Coding Scheme (MCS) in the threshold interval; the method specifically comprises the following steps:
when P is present s ＞U 1 Then, the base station eNB reduces the real-time modulation coding mode MCS according to a preset order;
when U is turned 2 ≤P s ≤U 1 When the modulation coding scheme is adopted, the original modulation coding scheme MCS is kept;
when P is s ＜U 2 Then, the base station eNB increases a real-time modulation coding scheme MCS according to a preset order;
the value of the preset order is positively correlated with the rate of adjusting the Modulation and Coding Scheme (MCS), namely the rate of the Modulation and Coding Scheme (MCS) is accelerated along with the increase of the preset order value;
the method further comprises the following steps: the base station eNB divides the signal-to-noise ratio into three threshold intervals through a preset first threshold and a preset second threshold, and adjusts a real-time Modulation Coding Scheme (MCS) according to the threshold interval in which the SNR (signal-to-noise ratio) of the PRACH signal is measured in real time;
when SNR > U 1 Then, the base station eNB reduces the real-time modulation coding mode MCS according to a preset order;
when U is turned 2 ≤SNR≤U 1 When the modulation coding scheme is adopted, the original modulation coding scheme MCS is kept;
when SNR < U 2 And then, the base station eNB increases the real-time modulation coding scheme MCS according to a preset order.
2. The LTE cluster service processing method of claim 1, wherein the first threshold U is set to 1 The formula of (1) is:
U 1 ＝P n +λ 1
the second threshold value U 2 The formula of (1) is:
U 2 ＝P n +λ 2
wherein, P n As noise power, λ 1 And λ 2 Is a predetermined threshold parameter, λ 1 Greater than λ 2 。
3. The LTE cluster service processing method of claim 2, wherein the λ 1 Is taken to be 0dBm, said lambda 2 Is-6 dBm.
4. The LTE trunking service processing method of claim 1 wherein the predetermined order is one order.
5. The LTE cluster service processing method of claim 1, wherein the resource configuration information of the PRACH comprises: the method comprises the steps of a PRACH preamble format, a PRACH preamble index, a PRACH frequency domain resource position, a PRACH time domain resource position, a PRACH sending period and a preamble receiving target power.
6. The LTE cluster service processing method of claim 1, wherein the UE obtains the PRACH resource configuration information of the cluster group in which the UE is located through cluster system messages and/or cluster paging messages.
7. A base station eNB, configured to perform the LTE cluster service processing method of any of claims 1-6, comprising:
a configuration module, configured to configure a PRACH resource of a random access channel of each cluster group;
the scheduling module is used for scheduling the downlink cluster service according to the initial modulation coding scheme MCS;
the detection module is used for detecting a threshold interval where the power of the PRACH signal sent by the user equipment UE is located;
and the adjusting module is used for adjusting the modulation and coding scheme MCS for the base station scheduling in real time according to the threshold interval where the power of the PRACH signal is located.
8. User Equipment (UE) configured to perform the LTE cluster service processing method of any of claims 1-6, comprising:
the system comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring resource configuration information of a random access channel PRACH (physical random access channel) sent by a base station eNB;
the demodulation module is used for demodulating cluster service data carried by a base station eNB in a physical downlink shared channel PDSCH;
and the sending module is used for judging whether the trunking service data is correctly demodulated or not and sending the PRACH to a base station eNB after determining that the trunking service data is not correctly demodulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910725049.6A CN110430021B (en) | 2019-08-07 | 2019-08-07 | LTE cluster service processing method, base station and user equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910725049.6A CN110430021B (en) | 2019-08-07 | 2019-08-07 | LTE cluster service processing method, base station and user equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110430021A CN110430021A (en) | 2019-11-08 |
| CN110430021B true CN110430021B (en) | 2022-09-20 |
Family
ID=68413044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910725049.6A Active CN110430021B (en) | 2019-08-07 | 2019-08-07 | LTE cluster service processing method, base station and user equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110430021B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019050446A1 (en) * | 2017-09-11 | 2019-03-14 | Telefonaktiebolaget Lm Ericsson (Publ) | Control information on data channel in a radio access network |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101375523B (en) * | 2005-01-12 | 2012-12-12 | 高通创锐讯有限公司 | Selecting MCS in a MIMO system |
| WO2015012664A1 (en) * | 2013-07-26 | 2015-01-29 | 엘지전자 주식회사 | Method for transmitting signal for mtc and apparatus for same |
| US10142945B2 (en) * | 2014-06-05 | 2018-11-27 | Samsung Electronics Co., Ltd. | Power control for transmission of uplink control information on two cells in carrier aggregation |
| DE112015006779T5 (en) * | 2015-08-06 | 2018-05-24 | Intel IP Corporation | Perform Mission Critical Communication on a User Equipment (UE) |
-
2019
- 2019-08-07 CN CN201910725049.6A patent/CN110430021B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019050446A1 (en) * | 2017-09-11 | 2019-03-14 | Telefonaktiebolaget Lm Ericsson (Publ) | Control information on data channel in a radio access network |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110430021A (en) | 2019-11-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20230254883A1 (en) | Method and apparatus for scheduling device-to-device sidelink transmission in a wireless communication system | |
| US11265132B2 (en) | Enhancing utilization efficiency of radio resources in MBMS | |
| US20230202335A1 (en) | Method and apparatus for transmitting signal in wireless communication | |
| US20200305127A1 (en) | Method and apparatus for resource selection in sidelink transmission in a wireless communication system | |
| US10492239B2 (en) | User terminal and base station | |
| EP3432657B1 (en) | Method for selecting resource to be used for performing v2x communication within range satisfying latency requirement in wireless communication system, and terminal using same | |
| EP3468268B1 (en) | Method for selecting, in selection period, subframe excluding subframe relating to subframe in which transmission has been performed during sensing period in wireless communication system, and terminal using same | |
| CN1883223B (en) | Link adaptation for point-to-multipoint channel | |
| US10893563B2 (en) | Method and apparatus for handling sensing for sidelink resource in a wireless communication system | |
| JP2019527987A (en) | Congestion control for LTE-V2V using decoding based channel busy ratio determination | |
| CN114073163B (en) | Method and apparatus for random access procedure | |
| US20190274131A1 (en) | Radio terminal and method | |
| JP2018504052A (en) | PTM (point-to-multipoint) transmission mode support and impact on PDCCH blind decoding | |
| CN101411106A (en) | Common time frequency radio resource in wireless communication systems | |
| US9838851B2 (en) | Subframe processing method and device | |
| US11044716B2 (en) | Telecommunications apparatus and method | |
| TW201728115A (en) | Downlink common burst channelization | |
| KR20180136855A (en) | Method and apparatus for a uplink transmission based on a characteristics of physical resources | |
| US11659593B2 (en) | Procedures for autonomous uplink transmissions | |
| WO2014187358A1 (en) | Machine-type communication service information transmission method, base station, terminal and system | |
| CN111130723B (en) | Method and device for realizing flexible feedback in V2X transmission and user equipment | |
| CN110430021B (en) | LTE cluster service processing method, base station and user equipment | |
| US9402259B2 (en) | Device and method for transmitting and receiving control information in a wireless communication system simultaneously supporting a plurality of wireless communication methods | |
| WO2022018230A1 (en) | Radio nodes, network nodes, circuitry, systems and methods | |
| CN115039360A (en) | Method and apparatus for disabling option 1 hybrid automatic repeat request (HARQ) feedback for sidelink communications |
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 |