Method for improving voice service awareness in carrier aggregation scene

Abstract

The invention provides a method for improving voice service awareness in a carrier aggregation scene, a base station opens a carrier aggregation function, a terminal is added with an auxiliary carrier, and when a data service is triggered and an auxiliary carrier activation threshold is exceeded, the auxiliary carrier is normally activated (existing process). And the base station evaluates the wireless quality of the main carrier and all the activated auxiliary carriers and finds out the optimal RB resource. And the base station allocates the optimal RB resource to the voice service of the terminal, so that the quality and the stability of voice communication are ensured. And the base station detects that the currently activated auxiliary carrier is still in a call state if the currently activated auxiliary carrier has a voice service. And when the data service meets the condition of deactivating the auxiliary carrier, executing a special operation for the voice service. The above measures can always ensure that the voice service can occupy the optimal RB resource, thereby greatly improving the voice service perception of the carrier aggregation scene.

Description

Technical Field

[0001] The present invention belongs to the technical field of wireless coverage of mobile communication base stations, and in particular to a method for improving voice service perception in a carrier aggregation scenario. Background Art

[0002] Carrier aggregation (CA) is a wireless communication technology that uses the bandwidth of multiple frequency bands at the same time and merges them together to increase the transmission rate of wireless signals. This technology can be applied to 4G LTE and 5G networks, greatly improving the capacity and rate of the network. The principle of carrier aggregation is to integrate adjacent or non-adjacent frequency band resources and multiplex them in one physical channel through multi-antenna technology. This integration method effectively expands the available spectrum range and provides greater bandwidth, thereby achieving higher data transmission rates and more reliable connection quality.

[0003] Carrier aggregation has many advantages in practical applications. First, it can effectively increase the user's data transmission rate, allowing users to download and upload files faster, watch high-definition videos, etc. Secondly, it can solve network congestion and bandwidth bottleneck problems, increase network capacity, and ensure network stability and reliability. In addition, carrier aggregation can also provide a better user experience, support more users to connect at the same time, reduce network latency, and improve network coverage. Although carrier aggregation technology has significant advantages in providing faster, more stable, and more reliable wireless networks, it also has some challenges. For example, when the terminal triggers data and voice concurrency at the same time, in the carrier aggregation scenario, it may not always be possible to guarantee the optimal perception of voice users. Therefore, it is necessary to study how to improve user perception in this scenario. Summary of the invention

[0004] The present invention aims to solve the technical problems raised by the background technology and proposes a method for improving voice service perception in a carrier aggregation scenario, aiming to improve the optimal voice service perception in a carrier aggregation scenario. In a carrier aggregation scenario, when a terminal triggers data and voice concurrency at the same time, it may not always be possible to ensure the optimal voice user perception.

[0005] The technical solution adopted by the present invention is: The present invention provides a method for improving voice service perception in a carrier aggregation scenario. The base station activates the carrier aggregation function, and a secondary carrier is added to the terminal. When a data service is triggered and exceeds the secondary carrier activation threshold, the secondary carrier is normally activated, including the following steps: (1) The base station has enabled the carrier aggregation function and configured the parameter threshold for adding a secondary carrier and the parameter threshold for activating the secondary carrier; (2) The base station evaluates the radio quality of the primary carrier and all activated secondary carriers to find the optimal RB resources; (3) The base station allocates the optimal RB resources to the terminal's voice service, thereby ensuring the quality and stability of voice calls.

[0006] (4) The base station detects if there is voice service on the currently activated secondary carrier and it is still in a call state. When the data service meets the conditions for deactivating the secondary carrier, special operations are performed for the voice service.

[0007] Preferably, in step (2), the voice service requires at least n consecutive RB resources, and the optimal n consecutive RB resources are found; when the terminal triggers the voice service, the base station allocates n RB resources from the terminal.

[0008] Preferably, in step (1), when the terminal meets the conditions for adding a secondary carrier, the secondary carrier is added normally; when the terminal triggers a data service and meets the parameter threshold for activating the secondary carrier, the secondary carrier is activated normally.

[0009] Preferably, in the initial stage, the voice service is on the main carrier, and the optimal RB resources are also on the main carrier, then the base station frees up these RB resources and then allocates them to the voice service; in the initial stage, the voice service is on the main carrier, and the optimal RB resources are on the activated secondary carrier, then the base station first frees up these RB resources, then switches the voice service to the activated secondary carrier, and allocates these RB resources; if in subsequent periodic evaluations, better RB resources are available, the base station will switch the voice service to the better RB resources, and the switching process is the switching between the main carrier and the secondary carrier.

[0010] Preferably, the vacating process is that the current RB resources are occupied by data services, and the base station directly releases these resources for use by voice services; or allocates other RB resources to the terminal to free up the current resources for use by voice services.

[0011] Preferably, in step 4, the following three methods are flexibly selected according to actual needs: Method 1: Wait for the terminal voice service to end, then execute the process of deactivating the auxiliary carrier, and then continue to execute steps (2) and (3); Method 2: Evaluate the radio quality of the primary carrier and the secondary carrier that does not need to be deactivated, find the optimal RB resource again, switch the voice service, and then perform the secondary carrier deactivation process, and then continue to perform process steps (2) and (3); Method 3: Switch the voice service directly back to the primary carrier, then perform the process of deactivating the secondary carrier, and then continue to perform process steps (2) and (3).

[0012] Compared with the prior art, the embodiments of the present invention have the following beneficial effects: The base station has activated the carrier aggregation function, and a secondary carrier has been added to the terminal. When a data service is triggered and exceeds the secondary carrier activation threshold, the secondary carrier is activated normally (existing process). The base station evaluates the wireless quality of the main carrier and all activated secondary carriers to find the optimal RB resources. The base station allocates the optimal RB resources to the voice service of the terminal to ensure the quality and stability of the voice call. The base station detects if there is a voice service on the currently activated secondary carrier and it is still in a call state. When the data service meets the conditions for deactivating the secondary carrier, special operations are performed for the voice service. The above measures can always ensure that the voice service can occupy the best RB resources, thereby greatly improving the perception of voice services in carrier aggregation scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 It is the main flow chart provided by this application; Figure 2 This is a flowchart of the optimal RB resource allocation for the voice service of the terminal by the base station provided in this application; Figure 3 This is a flowchart of the auxiliary carrier and voice service execution operation provided by this application; Figure 4 This is a distribution diagram of the relationship between the service cell and the neighboring cells provided in this application. DETAILED DESCRIPTION

[0015] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0016] Example In the existing process: the base station activates the carrier aggregation function, the terminal is added with a secondary carrier, and when the data service is triggered and exceeds the secondary carrier activation threshold, the secondary carrier is activated normally.

[0017] The present invention proposes a method for improving the perception of voice services in a carrier aggregation scenario, in which the base station evaluates the wireless quality of the main carrier and all activated auxiliary carriers to find the optimal RB resources. The base station allocates the optimal RB resources to the voice service of the terminal, thereby ensuring the quality and stability of the voice call. The base station detects if there is a voice service on the currently activated auxiliary carrier and is still in a call state. When the data service meets the conditions for deactivating the auxiliary carrier, special operations are performed for the voice service. The above measures can always ensure that the voice service can occupy the best RB resources, thereby greatly improving the perception of voice services in the carrier aggregation scenario.

[0018] 1) The base station has activated the carrier aggregation function, and a secondary carrier is added to the terminal. When a data service is triggered and the secondary carrier activation threshold is exceeded, the secondary carrier is activated normally (existing process).

[0019] The base station has enabled the carrier aggregation function, configured the parameter threshold for adding a secondary carrier, and the parameter threshold for activating the secondary carrier.

[0020] When the terminal meets the conditions for adding a secondary carrier, the secondary carrier is added normally.

[0021] When the terminal triggers a data service and meets the parameter threshold for activating the secondary carrier, the secondary carrier is activated normally.

[0022] Example of the principle and parameters for adding / deleting auxiliary carriers of a certain manufacturer: Principle of adding secondary carriers: For UEs with carrier aggregation capability, the access and RRC connection establishment process of the primary cell is exactly the same as that of non-CA terminals. The difference is that after the UE with CA capability establishes the RRC connection in the primary cell, the system side will further add secondary carriers for the UE based on the coverage situation and related measurement reports.

[0023] 1) If the relationship between the serving cell and the neighboring cell is "co-coverage" or "inclusion", the system directly adds a secondary cell for the UE; 2) If the relationship between the serving cell and the neighboring cell is "adjacent", a secondary cell is added for the UE through the A4 event. That is, the eNodeB sends an A4 measurement neighboring cell and configures it as the Scell ​​of the CA UE through RRC ConnectionReconfiguration according to the A4 measurement report reported by the CA UE. Figure 4 shown.

[0024] Principle of secondary carrier deletion: eNodeB sends A2 measurement to the successfully configured SCell. When CA UE reports the A2 measurement report of SCell, eNodeB deletes the SCell of the CA UE through RRC Connection Reconfiguration.

[0025] An example of the auxiliary carrier activation / deactivation principle and parameters of a certain manufacturer: Principle of secondary carrier activation: When the CA UE service and system meet the following three conditions, the system will send an activation MACCE to activate the secondary carrier on the PCC: 1) The AMBR of NGBR service is not met or the GBR service cannot be met; 2) The current primary carrier cannot meet the service requirements of the UE, resulting in service congestion; 3) The primary carrier PRB utilization is higher than the configured primary carrier activation threshold and the secondary carrier PRB utilization is lower than the configured secondary carrier activation threshold (cell level).

[0026] Principle of auxiliary carrier deactivation: When a CA UE meets any of the following conditions, the secondary carrier will be deactivated: 1) If the primary carrier PRB utilization is lower than the configured primary carrier deactivation threshold and the secondary carrier PRB utilization is lower than the configured secondary carrier deactivation threshold, the base station will send a deactivation MAC CE to the PCC to deactivate the secondary carrier; 2) If the MCS of the current user's secondary carrier is lower than a certain threshold (The MCS Threshold Of SCellDeActive), the SCC can be deactivated by sending a deactivation MAC CE through the PCC; 3) The secondary carrier implicit deactivation timer is configured not to be Infinity. If the UE does not receive data or PDCCH message within the deactivation timer configured for the secondary carrier, the UE will automatically deactivate the secondary carrier.

[0027] 2) The base station evaluates the radio quality of the primary carrier and all activated secondary carriers to find the optimal RB resources.

[0028] The base station evaluates the optimal RB resources for the primary carrier and all activated secondary carriers, for example, based on a separate downlink SINR / downlink CQI, a separate uplink SINR / uplink NI interference, or a combination of the above evaluation factors as required. The evaluation can be set to a periodic evaluation, for example, once a minute, updated and saved.

[0029] Generally, voice services require 1-4 continuous RB resources, so only the optimal 4 continuous RB resources need to be found during evaluation. When the terminal triggers the voice service, the base station allocates 1-4 RB resources to the terminal from the above resources according to actual needs.

[0030] 3) The base station allocates the optimal RB resources to the terminal's voice service to ensure the quality and stability of voice calls.

[0031] In the initial stage, the voice service is on the primary carrier, and the optimal RB resources are also on the primary carrier, so the base station frees up these RB resources and then allocates them to the voice service.

[0032] In the initial stage, the voice service is on the primary carrier, but the optimal RB resources are on the activated secondary carrier. The base station first vacates these RB resources, then switches the voice service to the activated secondary carrier, and allocates these RB resources.

[0033] If better RB resources are available in subsequent periodic evaluations, the base station will switch the voice service to the better RB resources, which may be switching from the primary carrier to the secondary carrier, from the secondary carrier to the primary carrier, or from the secondary carrier to the secondary carrier.

[0034] The above-mentioned "freeing up" means that the current RB resources are occupied by data services, and the base station directly releases these resources for use by voice services; or allocates other RB resources to the terminal to make these current resources free for use by voice services.

[0035] 4) The base station detects if there is voice service on the currently activated secondary carrier and it is still in a call state. When the data service meets the conditions for deactivating the secondary carrier, special operations are performed for the voice service.

[0036] The following three strategies can be flexibly selected according to actual needs.

[0037] Method 1: Wait until the voice service of the terminal ends, then execute the process of deactivating the auxiliary carrier, and then continue to execute processes (2) and (3).

[0038] Method 2: Evaluate the wireless quality of the primary carrier and the secondary carrier that does not need to be deactivated, find the optimal RB resource again, switch the voice service to it, and then deactivate the secondary carrier, and then continue with processes (2) and (3).

[0039] Method 3: Switch the voice service directly back to the primary carrier, then perform the process of deactivating the secondary carrier, and then continue to perform processes (2) and (3).

[0040] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0041] The base station has activated the carrier aggregation function, and a secondary carrier has been added to the terminal. When a data service is triggered and exceeds the secondary carrier activation threshold, the secondary carrier is activated normally (existing process). The base station evaluates the wireless quality of the main carrier and all activated secondary carriers to find the optimal RB resources. The base station allocates the optimal RB resources to the voice service of the terminal to ensure the quality and stability of the voice call. The base station detects if there is a voice service on the currently activated secondary carrier and it is still in a call state. When the data service meets the conditions for deactivating the secondary carrier, special operations are performed for the voice service. The above measures can always ensure that the voice service can occupy the best RB resources, thereby greatly improving the perception of voice services in carrier aggregation scenarios.

[0042] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A method for improving voice service perception in a carrier aggregation scenario, wherein a base station activates the carrier aggregation function, a secondary carrier is added to a terminal, and when a data service is triggered and exceeds the secondary carrier activation threshold, the secondary carrier is activated normally, characterized in that: The steps include: (1) The base station enables the carrier aggregation function and configures the parameter threshold for adding a secondary carrier and the parameter threshold for activating the secondary carrier; (2) The base station evaluates the radio quality of the primary carrier and all activated secondary carriers to find the optimal RB resources; (3) The base station allocates the best RB resources to the voice service of the terminal, thereby ensuring the quality and stability of voice calls; (4) The base station detects if there is voice service on the currently activated secondary carrier and it is still in a call state; when the data service meets the conditions for deactivating the secondary carrier, special operations are performed for the voice service.

2. The method for improving voice service perception in a carrier aggregation scenario according to claim 1, characterized in that: In step (2), the voice service requires at least n consecutive RB resources, and the optimal n consecutive RB resources are found; when the terminal triggers the voice service, the base station allocates n RB resources from the terminal.

3. The method for improving voice service perception in a carrier aggregation scenario according to claim 1, characterized in that: In step (1), when the terminal meets the conditions for adding a secondary carrier, the secondary carrier is added normally; when the terminal triggers a data service and meets the parameter threshold for activating the secondary carrier, the secondary carrier is activated normally.

4. The method for improving voice service perception in a carrier aggregation scenario according to claim 1, characterized in that: In the initial stage, the voice service is on the primary carrier, and the optimal RB resources are also on the primary carrier, so the base station frees up these RB resources and then allocates them to the voice service; In the initial stage, the voice service is on the primary carrier, and the optimal RB resources are on the activated secondary carrier. The base station first vacates these RB resources, then switches the voice service to the activated secondary carrier and allocates these RB resources. If better RB resources are available in subsequent periodic evaluations, the base station will switch the voice service to the better RB resources. The switching process is the switching between the primary carrier and the secondary carrier.

5. The method for improving voice service perception in a carrier aggregation scenario according to claim 4, characterized in that: The vacating process is that when the current RB resources are occupied by data services, the base station directly releases these resources for use by voice services; or allocates other RB resources to the terminal to free up the current resources for use by voice services.

6. The method for improving voice service perception in a carrier aggregation scenario according to claim 1, characterized in that: In step 4, you can flexibly select the following three methods based on actual needs: Method 1: Wait for the terminal voice service to end, then execute the process of deactivating the auxiliary carrier, and then continue to execute steps (2) and (3); Method 2: Evaluate the radio quality of the primary carrier and the secondary carrier that does not need to be deactivated, find the optimal RB resource again, switch the voice service, and then perform the secondary carrier deactivation process, and then continue to perform process steps (2) and (3); Method 3: Switch the voice service directly back to the primary carrier, then perform the process of deactivating the secondary carrier, and then continue to perform process steps (2) and (3).

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