WO2016062055A1

WO2016062055A1 - Uplink supplementary carrier state control method and device, and base station

Info

Publication number: WO2016062055A1
Application number: PCT/CN2015/077843
Authority: WO
Inventors: 谭弦; 刘路
Original assignee: 中兴通讯股份有限公司
Priority date: 2014-10-21
Filing date: 2015-04-29
Publication date: 2016-04-28
Also published as: CN105592560A

Abstract

An uplink supplementary carrier state control method and device, and a base station. The method comprises: when performing uplink supplementary carrier state control, acquiring the demand state of a user terminal and the load state of an uplink supplementary carrier cell associated with the user terminal; and dynamically setting the uplink supplementary carrier activated state of the user terminal according to the acquired demand state of the user terminal and the acquired load state of the uplink supplementary carrier cell.

Description

Uplink secondary carrier state control method, device and base station

Technical field

This document relates to the field of communications, and in particular, to an uplink secondary carrier state control method, apparatus, and base station.

Background technique

As an upgrade technology of the UMTS (Universal Mobile Telecommunications System) standard, DC-HSDPA (Dual Cell High Speed Downlink Packet Access) is introduced in the 3GPP (3rd Generation Partnership Project) R8 version. High-speed downlink packet access) greatly increases the downlink transmission rate, making the uplink and downlink transmission rates unbalanced. The DC-HSUPA (Dual Cell High Speed Uplink Packet Access) technology is introduced in the 3GPP R9 version to increase the uplink transmission rate by using two carriers adjacent in the same frequency band.

HSUPA (High Speed Uplink Packet Access) scheduling is implemented in a base station (NodeB), two carriers used by DC-HSUPA, a primary carrier and a secondary carrier, and a primary carrier as a normal state, for a user terminal (UE, User) Equipment, which is the user equipment, is always activated, and the secondary carrier can be enabled as needed. However, in order to obtain a better uplink transmission rate, the secondary carrier is basically always active for the user terminal. However, the use of dual-carrier HSUPA requires more network resources such as demodulation, scheduling, transmission, and air interface load than the single-carrier HSUPA, thereby reducing the number of common users supported by the network.

Summary of the invention

In order to ensure the advantages of the DC-HSUPA terminal and to save the consumption of dynamic resources of the network, it is necessary to control the activation and deactivation timing of the uplink secondary carrier in the base station. The present invention provides an uplink secondary carrier state control method, device, and base station, which ensures the uplink transmission rate of the DC-HSUPA while saving network dynamic resource consumption.

An uplink secondary carrier state control method includes:

Obtaining a demand status of the user terminal and a load status of the uplink secondary carrier cell associated with the user terminal;

And setting an uplink secondary carrier activation state of the user terminal according to a required state of the user terminal and a load state of the uplink secondary carrier cell.

In an embodiment of the invention, the requirements of the user terminal include a traffic demand and a transmit power demand.

In an embodiment of the present invention, obtaining the demand status of the user terminal includes:

Receiving an E-DPCCH frame sent by the user terminal according to a preset time interval, where the E-DPCCH frame includes a HAPPY indication reflecting a user terminal traffic demand and a transmission power requirement, where the HAPPY indication includes HAPPY and UNHAPPY.

In an embodiment of the present invention, a load state of the uplink secondary carrier cell is an average load of the uplink secondary carrier cell.

In an embodiment of the present invention, before acquiring the demand status of the user terminal and the load status of the uplink secondary carrier cell associated with the user terminal, the method further includes determining whether the current uplink secondary carrier activation status of the user terminal is If yes, the uplink secondary carrier deactivation determination period of the user terminal is obtained; if not, the uplink secondary carrier activation determination period of the user terminal is obtained.

In an embodiment of the present invention, if the current uplink secondary carrier activation state of the user terminal is deactivated, the user terminal is set according to the required state of the user terminal and the load state of the uplink secondary carrier cell. The uplink secondary carrier activation status includes:

And calculating a ratio of the UNHAPPY and the HAPPY+UNHAPPY received in the uplink secondary carrier activation determination period; and acquiring an average load of the uplink secondary carrier cell in the uplink secondary carrier activation determination period;

Determining whether the ratio is greater than the first ratio threshold, and determining whether the ratio of the average load to the preset target load is less than a second ratio threshold; if yes, setting the uplink secondary carrier activation state of the user terminal to be active.

In an embodiment of the present invention, if the current uplink secondary carrier activation state of the user terminal is activated, the uplink of the user terminal is set according to the required state of the user terminal and the load state of the uplink secondary carrier cell. Before the secondary carrier is activated, it also includes determining whether the secondary carrier air interface is Not synchronized or out of step;

Setting the uplink secondary carrier activation state of the user terminal according to the required state of the user terminal and the load state of the uplink secondary carrier cell includes:

And calculating a ratio of the received value of the UNHAPPY and the HAPPY+UNHAPPY in the uplink secondary carrier deactivation determination period; and acquiring an average load of the uplink secondary carrier cell in the uplink secondary carrier deactivation determination period;

Determining whether the ratio is less than a third ratio threshold, and if yes, setting an uplink secondary carrier activation state of the user terminal to a deactivated state; if not, determining whether the uplink secondary carrier cell still needs to be released by the secondary carrier The other user terminal of the load resource, and whether the ratio of the average load to the preset target load is greater than or equal to a fourth ratio threshold, and if yes, setting the uplink secondary carrier activation state of the user terminal to a deactivated state.

In an embodiment of the present invention, after the uplink secondary carrier activation state of the user terminal is set to be activated, the method further includes setting a deactivation determination delay time of the user terminal, where the deactivation determination delay time is The user terminal does not perform a deactivation determination.

In an embodiment of the present invention, after the uplink secondary carrier activation state of the user terminal is set to be deactivated, the method further includes setting an activation determination delay time of the user terminal, where the activation determination delay time is The user terminal does not make an activation decision.

An uplink secondary carrier state control device includes: an information acquisition module and a state setting module;

The information acquiring module is configured to: acquire a demand status of the user terminal, and a load status of the uplink secondary carrier cell associated with the user terminal;

The state setting module is configured to: set an uplink secondary carrier activation state of the user terminal according to a required state of the user terminal and a load state of the uplink secondary carrier cell.

In an embodiment of the present invention, the information acquiring module includes a frame obtaining sub-module, and is configured to: receive an E-DPCCH frame sent by the user terminal according to a preset time interval, where the E-DPCCH frame includes the user terminal HAPPY indication of traffic demand and transmit power demand, the HAPPY indication includes HAPPY and UNHAPPY.

In an embodiment of the present invention, the load state of the uplink secondary carrier cell is an average load of the uplink secondary carrier cell; the information acquiring module further includes a load acquisition submodule, and is configured to: acquire the uplink auxiliary The average load of the carrier cell.

In an embodiment of the present invention, the method further includes a determining module and a period setting module, where the determining module is configured to: acquire, by the information acquiring module, a demand status of the user terminal and an uplink secondary carrier cell associated with the user terminal Before the load state, determining whether the current uplink secondary carrier activation state of the user terminal is active, and if yes, notifying the cycle setting module to acquire an uplink secondary carrier deactivation determination period of the user terminal; if not, notifying the cycle The setting module acquires an uplink secondary carrier activation determination period of the user terminal.

In an embodiment of the present invention, the state setting module includes a statistic sub-module and a processing sub-module; the statistic sub-module is configured to: determine, in the determining module, that the current uplink auxiliary carrier activation state of the user terminal is deactivated And calculating a ratio of the UNHAPPY and the HAPPY+UNHAPPY received in the uplink secondary carrier activation determination period, and acquiring an average load of the uplink secondary carrier cell in the uplink secondary carrier activation determination period;

The processing sub-module is configured to: determine whether the ratio is greater than a first ratio threshold, and determine whether a ratio of the average load to a preset target load is less than a second ratio threshold; if yes, setting an uplink auxiliary of the user terminal The carrier activation status is active.

In an embodiment of the present invention, the state setting module includes an air interface determining sub-module, a statistics sub-module, and a processing sub-module; the air interface determining sub-module is configured to: determine, by the determining module, the current user terminal When the uplink secondary carrier activation state is activated, it is determined whether the secondary carrier air interface is not synchronized or out of synchronization; if yes, the statistical sub-module is notified to collect the ratio of UNHAPPY and HAPPY+UNHAPPY received in the uplink secondary carrier deactivation determination period. And obtaining an average load of the uplink secondary carrier cell in the uplink secondary carrier deactivation determination period;

The processing submodule is configured to: determine whether the ratio is less than a third ratio threshold, and if yes, set an uplink secondary carrier activation state of the user terminal to a deactivated state; if not, determine whether the uplink secondary carrier cell is There is also another user terminal that needs the load resource released by the secondary carrier, and whether the ratio of the average load to the preset target load is greater than or equal to a fourth ratio threshold, and if yes, setting the uplink secondary carrier activation state of the user terminal To deactivate the state.

A base station includes a memory and a processor; the memory is configured to: store at least one pass a sequence module, the processor being configured to: invoke the at least one program module to perform the steps in the uplink secondary carrier state control method as described above.

The uplink secondary carrier state control method, device, and base station provided herein acquire the demand state of the user terminal and the load state of the uplink secondary carrier cell associated with the user terminal when performing uplink secondary carrier state control; And the load state of the uplink secondary carrier cell dynamically sets the uplink secondary carrier activation state of the user terminal; that is, when the uplink secondary secondary carrier is currently activated according to the required state of the user terminal and the load state of the uplink secondary carrier cell, the active secondary carrier is set to be activated. State to obtain a better uplink transmission rate; when it is dynamically determined according to the demand state of the user terminal and the load state of the uplink secondary carrier cell that the uplink secondary carrier does not need to be activated at present, it is adjusted to the deactivated state to save the network. The consumption of dynamic resources; rather than setting the activation state of the upstream load wave to active, in order to obtain a better upstream transmission rate as much as possible. It can be seen that the solution provided by the embodiment of the present invention can ensure the uplink transmission rate of the DC-HSUPA while saving the consumption of the network dynamic resources.

BRIEF abstract

1 is a schematic flowchart of an uplink secondary carrier state control method according to Embodiment 1 of the present invention;

2 is a schematic structural diagram of an uplink secondary carrier state control apparatus according to Embodiment 2 of the present invention;

3 is a schematic structural diagram of another uplink secondary carrier state control apparatus according to Embodiment 2 of the present invention;

4 is a schematic structural diagram of another uplink secondary carrier state control apparatus according to Embodiment 2 of the present invention;

FIG. 5 is a schematic structural diagram of another uplink secondary carrier state control apparatus according to Embodiment 2 of the present invention;

FIG. 6 is a schematic structural diagram of a base station according to Embodiment 3 of the present invention;

FIG. 7 is a schematic flowchart of a method for setting an uplink secondary carrier state according to Embodiment 3 of the present invention;

FIG. 8 is a schematic flowchart of a method for determining an uplink secondary carrier activation according to Embodiment 3 of the present invention;

FIG. 9 is a schematic flowchart of a method for determining an uplink secondary carrier deactivation according to Embodiment 3 of the present invention.

Embodiments of the invention

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Embodiment 1:

It has been found that when the user terminal does not need to send data (that is, when there is no traffic demand), or the demand is small, the secondary carrier that activates the user terminal does not contribute to the throughput. When the remaining transmit power of the user terminal is insufficient (that is, when the power demand is too large), the transmit power of the DPCCH (Dedicated Physical Control CHannel) of the secondary carrier will not only affect the service available power of the primary carrier, but also increase The interference of the uplink secondary carrier frequency; therefore, if the user terminal whose uplink secondary carrier has been activated has less demand for transmitting data, or the remaining transmission power is reduced, it is more reasonable to deactivate the uplink secondary carrier.

In addition, when the load of the uplink secondary carrier cell associated with the user terminal is high, the gain of the uplink secondary carrier to the user terminal is not large and may reduce the performance of the entire system. Therefore, the load status of the uplink secondary carrier cell is also required. As a consideration for considering the activation/deactivation of the uplink secondary carrier.

Based on the foregoing analysis, as shown in FIG. 1 , the uplink secondary carrier state control method provided in this embodiment includes:

S101: Acquire a demand status of the user terminal and a load status of the uplink secondary carrier cell associated with the user terminal.

S102: Dynamically set an uplink secondary carrier activation state of the user terminal according to the obtained requirement state of the user terminal and the load state of the uplink secondary carrier cell.

The above steps can all be performed by the base station. The above solution can ensure that the user terminal activates the uplink secondary carrier when there is a need and does not affect the performance of the system. When the user terminal does not need or its power cannot support multiple carriers, the uplink secondary carrier is activated. The resources consumed by the carrier are used to save network resources.

In the above S101, the acquired requirements of the user terminal include the traffic demand and the transmission power requirement of the user terminal. The HAPPY (satisfactory) indication carried by the enhanced dedicated physical control channel (E-DPCCH) frame sent by the user terminal can reflect the traffic demand (ie, data requirement) and power demand (and transmission power state) of the user terminal. User terminal setting UNHAPPY status according to 3GPP protocol The following conditions must be met:

A: The user terminal has sent using the largest data block that the current authorization is allowed to send;

B: The user terminal has enough power to send more data;

C: The total data of the user terminal buffer needs to be longer than the happy_bit_delay_condition (radio network controller RNC configuration).

According to the protocol standard, the HAPPY indication is set to UNHAPPY only when the above three conditions are satisfied at the same time, that is, "unsatisfactory", indicating that the user terminal wishes to have a larger authorization. Any condition that does not satisfy the HAPPY indication is set to HAPPY, ie "satisfactory", characterizing that the user terminal satisfies the authorization assigned to it by the base station. Therefore, when the user terminal reports as UNHAPPY, the user terminal must have a large transmission data requirement, and currently the remaining transmission power can support sending a larger data block. Otherwise, it means that the amount of data of the user terminal is not much, or the remaining transmission power is insufficient.

Therefore, the base station can directly determine the traffic demand and power demand of the user terminal by using the HAPPY and UNHAPPY ratios in the HAPPY indication carried by the E-DPCCH frame sent by the user terminal, and the operation is simpler. Correspondingly, obtaining the demand status of the user terminal in the above S101 includes:

Receiving an E-DPCCH frame sent by the user terminal according to a preset time interval TTI (Transmission Time Interval), where the E-DPCCH frame includes a HAPPY indication reflecting a traffic demand and a transmission power requirement of the user terminal, where the HAPPY indication includes HAPPY and UNHAPPY.

In the above S101, the SI (Scheduling Information) filled in the enhanced dedicated physical data channel (E-DPDCH) frame may also reflect the traffic demand (ie, data requirement) and power demand (and the transmit power state) of the user terminal. . In the above S101, the load state of the acquired uplink secondary carrier cell is the average load of the uplink secondary carrier cell. When acquiring, the base station may collect the load state of the uplink load wave cell according to the set collection period, and perform filtering calculation to obtain and save.

In this embodiment, before the S101 obtains the demand status of the user terminal and the load status of the uplink secondary carrier cell associated with the user terminal, the method further includes determining whether the current uplink secondary carrier activation status of the user terminal is activated or deactivated, such as an active state. And obtaining an uplink secondary carrier deactivation determination period T2 of the user terminal; if the deactivated state is obtained, acquiring an uplink secondary carrier activation determination period T1 of the user terminal. The uplink secondary carrier activation determination period T1 and the uplink secondary carrier deactivation determination obtained here The period T2 may be a period that has been previously preset, or may be currently set in real time. The uplink secondary carrier activation determination period T1 and the uplink secondary carrier deactivation determination period T2 in this embodiment may be dynamically configured according to different networks and service scenarios, and may be configured to be the same or different. The two can be configured as an integer multiple of the scheduling period (RTT) of the base station scheduling the user terminal, that is, in the RTT unit; the uplink secondary carrier activation determining period T1 can be set to N1 RTTs; the uplink secondary carrier deactivation determining period T2 can be set to N2 RTTs.

If the current uplink secondary carrier activation state of the user terminal is deactivated, setting the uplink secondary carrier activation state of the user terminal according to the required state of the user terminal and the load state of the uplink secondary carrier cell includes:

The ratio M1 of the UNHAPPY and the HAPPY+UNHAPPY received in the uplink secondary carrier activation determination period is calculated; and the average load K1 of the uplink secondary carrier cell in the uplink secondary carrier activation determination period is obtained;

Determining whether the ratio M1 of UNHAPPY and HAPPY+UNHAPPY is greater than the first proportional threshold D1 (Condition 11), and determining whether the ratio of the average load K1 to the preset target load K is less than the second proportional threshold D2 (Condition 12); At the same time, condition 11 and condition 12) are satisfied, and the uplink secondary carrier activation state of the user terminal is set to be active; if not, the deactivation state is maintained.

For example, before the current uplink secondary carrier activation state of the user terminal is activated, and before the uplink secondary carrier activation state of the user terminal is set according to the required state of the user terminal and the load state of the uplink secondary carrier cell, the method further includes:

Determining whether the secondary carrier air interface is not synchronized or out of synchronization (condition 21); if yes, determining the subsequent deactivation process; that is, the condition 21 is a trigger condition for the deactivation determination.

Among them, the unsynchronized refers to the state that has never been synchronized (there is no radio link recovery); the out-of-synchronization means that after the air interface is synchronized, the out-of-step occurs again (the radio link fails after the radio link is restored) .

When determining that the secondary carrier air interface is not synchronized or out of synchronization, setting the uplink secondary carrier activation state of the user terminal according to the required state of the user terminal and the load state of the uplink secondary carrier cell includes:

The ratio M2 of the UNHAPPY and the HAPPY+UNHAPPY received in the uplink secondary carrier deactivation determination period is calculated; and the average load K2 of the uplink secondary carrier cell in the uplink secondary carrier deactivation determination period is obtained;

Determining whether the ratio M2 of UNHAPPY and HAPPY+UNHAPPY is less than the third ratio threshold D3 (condition 22). If yes (ie, satisfying condition 22), the uplink secondary carrier activation state of the user terminal is directly set to a deactivated state; if not, the uplink is determined. Whether there is another user terminal (condition 23) that needs the load resource released by the secondary carrier in the secondary carrier cell, and whether the ratio of the average load K2 to the preset target load K is greater than or equal to the fourth ratio threshold D4 (condition 24), If yes (ie, both condition 23 and condition 24 are satisfied), the uplink secondary carrier activation state of the user terminal is set to a deactivated state; if not, the active state is maintained.

The average load of the uplink secondary carrier cell may be represented by Cell_Load _{avg, sec} , which is a base station side antenna for measuring the uplink received total noise corresponding load. In this embodiment, the filtering may be performed once in each RTT scheduling period, and the filtering formula is Cell_Load _{avg, sec. , n} = (1-τ) * Cell_Load _{avg, sec, n} + τ * Cell_Load _{avg, sec, n-1} . Among them, Cell_Load _{avg, sec, n} is the average load currently collected, Cell_Load _{avg, sec, n-1} is the average load obtained by the last filtering, and τ is the filter coefficient. The current average load of the uplink secondary carrier cell in T1 and T2 is filtered to obtain K1 and K2, respectively. The target load K in this embodiment can be represented by Cell_Load _{target, sec} , and can be flexibly configured by the radio network controller (RNC) as needed. Correspondingly, the above D2=K1/K; the above D4=K2/K.

In order to avoid the ping-pong phenomenon that the user terminal repeatedly activates/deactivates, which brings additional signaling overhead, the embodiment also sets a deactivation determination delay time and an activation determination delay time: the activation of the uplink secondary carrier activation state of the user terminal is activated. After deactivation, the method further includes setting a deactivation delay time of the user terminal, and not deactivating the user terminal during the deactivation determination delay time. After the uplink secondary carrier activation state of the user terminal is set to be activated by deactivation, the method further includes setting an activation determination delay time of the user terminal, and not performing activation determination on the user terminal within the activation determination delay time. After the activation of the uplink secondary carrier of the user terminal is set to be deactivated, the method further includes: recovering the uplink secondary carrier related resource, and notifying the user terminal to deactivate; correspondingly, deactivating the uplink secondary carrier activation state of the user terminal After being set to be activated, the method further includes allocating an uplink secondary carrier related resource, and notifying the user terminal to activate.

Embodiment 2:

The embodiment provides an uplink secondary carrier state control device, and the uplink secondary carrier state control device can be implemented on the base station. Referring to FIG. 2, the information acquisition module 21 and the state are included. Setting module 22;

The information acquiring module 21 is configured to: acquire a demand status of the user terminal and a load status of the uplink secondary carrier cell associated with the user terminal;

The state setting module 22 is configured to set an uplink secondary carrier activation state of the user terminal according to the required state of the user terminal and the load state of the uplink secondary carrier cell.

The uplink secondary carrier state control device can ensure that the user terminal activates the uplink secondary carrier when there is a need and does not affect the system performance, and activates the uplink secondary carrier when the user terminal does not need or its power cannot support multiple carriers. Dynamically allocate resources consumed by the secondary carrier to save network resources.

The requirements of the user terminal acquired by the information obtaining module 21 include the traffic demand and the transmission power requirement of the user terminal. Correspondingly, the information obtaining module 21 includes a frame obtaining sub-module, and is configured to: receive an E-DPCCH frame sent by the user terminal according to a preset time interval, where the E-DPCCH frame includes a HAPPY indication that reflects a traffic demand and a transmission power requirement of the user terminal. The HAPPY indication includes HAPPY and UNHAPPY; the traffic demand and power demand of the user terminal are determined according to the HAPPY and UNHAPPY ratios in the HAPPY indication.

The load state of the uplink secondary carrier cell in this embodiment is the average load of the uplink secondary carrier cell. The information acquisition module 21 further includes a load acquisition sub-module, which is configured to obtain an average load of the uplink secondary carrier cell. When acquiring, the base station may collect the load state of the uplink load wave cell according to the set collection period, and perform filtering calculation to obtain and save.

As shown in FIG. 3, the uplink secondary carrier state control apparatus further includes a determining module 31 and a period setting module 32. The determining module 31 is configured to: acquire the demand state of the user terminal and the uplink secondary carrier associated with the user terminal in the information acquiring module 21. Before the load status of the cell, it is determined whether the current uplink secondary carrier activation state of the user terminal is activated. If yes, the notification period setting module 32 acquires the uplink secondary carrier deactivation determination period T2 of the user terminal; if not, the notification period setting module 32 acquires The uplink secondary carrier activation determination period T1 of the user terminal is described. The uplink secondary carrier activation determination period T1 and the uplink secondary carrier deactivation determination period T2 obtained herein may be previously preset periods, or may be currently set in real time. The uplink secondary carrier activation determination period T1 and the uplink secondary carrier deactivation determination period T2 in this embodiment may be dynamically configured according to different networks and service scenarios, and may be configured to be the same or different. Both can be configured as base stations An integer multiple of the scheduling period RTT for scheduling the user terminal, that is, in units of RTT; the uplink secondary carrier activation determination period T1 may be set to N1 RTTs; and the uplink secondary carrier deactivation determination period T2 may be set to N2 RTTs.

The state setting module 22 in this embodiment includes a statistic sub-module and a processing sub-module. The statistic sub-module is configured to: when the determining module 31 determines that the current uplink secondary carrier activation state of the user terminal is deactivated, the statistic is determined in the uplink secondary carrier activation. The ratio M1 of the received UNHAPPY and HAPPY+UNHAPPY in the period T1, and obtains the average load K1 of the uplink secondary carrier cell in the uplink secondary carrier activation determination period;

The processing submodule is configured to: determine whether the ratio M1 of the UNHAPPY and the HAPPY+UNHAPPY is greater than the first proportional threshold D1 (condition 11), and determine whether the ratio of the average load K1 to the preset target load K is less than the second proportional threshold D2 (condition 12); if yes, set the uplink secondary carrier activation state of the user terminal to be active; if not, keep the deactivated state.

The state setting module 22 in this embodiment further includes an air interface determining submodule. The air interface determining submodule is configured to: determine, when the determining module 31 determines that the current uplink secondary carrier activation state of the user terminal is active, determining whether the secondary carrier air interface is not synchronized or lost. Step (condition 21); if yes, the notification statistics sub-module collects the ratio M2 of UNHAPPY and HAPPY+UNHAPPY received in the uplink secondary carrier deactivation determination period, and obtains the average of the uplink secondary carrier cell in the uplink secondary carrier deactivation determination period. Load K2;

The processing submodule is further configured to: determine whether the ratio M2 of the UNHAPPY and the HAPPY+UNHAPPY is less than the third ratio threshold D3 (condition 22), and if so, directly set the uplink secondary carrier activation state of the user terminal to a deactivated state; if not, determine Whether there is another user terminal that needs the load resource released by the secondary carrier in the uplink secondary carrier cell (condition 23), and whether the ratio of the average load K2 to the preset target load K is greater than or equal to the fourth ratio threshold D4 (condition 24) If yes, set the uplink secondary carrier activation state of the user terminal to the deactivated state; if not, keep the active state.

The average load of the uplink secondary carrier cell may be represented by Cell_Load _{avg, sec} , which is a base station side antenna for measuring the uplink received total noise corresponding load. In this embodiment, the filtering may be performed once in each RTT scheduling period, and the filtering formula is Cell_Load _{avg, sec. , n} = (1-τ) * Cell_Load _{avg, sec, n} + τ * Cell_Load _{avg, sec, n-1} . The current average load of the uplink secondary carrier cell is filtered in T1 and T2 to obtain K1 and K2, respectively. The target load K in this embodiment may be represented by Cell_Load _{target, sec} , and may be flexibly configured by the radio network controller RNC as needed. Correspondingly, the above D2=K1/K; the above D4=K2/K.

In order to avoid the ping-pong phenomenon in which the user terminal is repeatedly activated/deactivated, and the additional signaling overhead is caused, the embodiment also sets the deactivation determination delay time and the activation determination delay time. Referring to FIG. 4, the uplink in this embodiment is shown. The secondary carrier state control device further includes a delay time setting module 41 configured to: after the state setting module 22 sets the uplink secondary carrier activation state of the user terminal to be deactivated by activation, set the deactivation delay time of the user terminal, where Deactivating the user terminal without deactivation determination during the deactivation delay time; and setting: after the state setting module 22 sets the uplink secondary carrier activation state of the user terminal to be activated by activation, setting the activation delay time of the user terminal, The activation decision is not made to the user terminal within the activation determination delay time.

As shown in FIG. 5, the uplink secondary carrier state control apparatus in this embodiment further includes a resource management module 51, configured to: after the state setting module 22 sets the uplink secondary carrier activation state of the user terminal from activation to deactivation. Retrieving the uplink secondary carrier related resources, and notifying the user terminal to deactivate; and after the state setting module 22 sets the uplink secondary carrier activation state of the user terminal to be activated by activation, allocates uplink secondary carrier related resources, and notifies the user terminal to activate. .

Embodiment 3:

This embodiment provides a base station, as shown in FIG. 6, including a memory 61 and a processor 62. The memory 61 is configured to: store at least one program module, and the processor 62 is configured to: invoke the at least one program module to execute The steps in the uplink secondary carrier state control method in the embodiment.

The following is an example of a base station as an execution subject, and several application scenarios are taken as an example.

Referring to FIG. 7, the process of uplink secondary carrier state setting and resource allocation includes:

S701: The base station determines whether the activation status of the current uplink secondary carrier of the user terminal is activated or deactivated, and sets a deactivation determination period or an activation determination period based on the determination result;

S702: The base station collects a HAPPY indication of the user terminal and an uplink secondary carrier cell load status associated with the user terminal.

S703: The determination period arrives, and the ratio of the received UNHAPPY to HAPPY+UNHAPPY and the average load of the uplink secondary carrier cell in the statistical determination period;

S704: Comparing the ratio of the UNHAPPY to the HAPPY+UNHAPPY and the average load of the uplink secondary carrier cell to the activation or deactivation condition;

S705: Select to deactivate or activate the setting according to the comparison result or maintain the current state unchanged;

S706: Reclaim or allocate resources according to the deactivation or activation setting, and reset the activation or deactivation delay timer.

The above S701 may be performed after the above S702, and the ratio of the UNHAPPY and HAPPY+UNHAPPY in the corresponding determination period and the average load of the uplink secondary carrier cell may be counted in the main subsequent statistics.

The HAPPY indication sent by the user terminal is collected in S701 shown in FIG. 7. When the user terminal is not activated, the collected HAPPY data is received from the primary carrier; when the user terminal is activated, the collected HAPPY data is also from the primary carrier. Or: when the user terminal is not activated, the collected HAPPY data is received from the primary carrier; when the user terminal is activated, the collected HAPPY data is received from the secondary carrier.

In S701 shown in FIG. 7, the base station counts the uplink secondary carrier load state, samples the antenna to measure the uplink noise value every time slot, averages the sampled value within the RTT scheduling period within 16 ms, and then performs RTT, that is, 16 ms for each scheduling period. The average value is filtered, Cell_Load _{avg, sec, n} = (1 - τ) * Cell_Load _{avg, sec, n} + τ * Cell_Load _{avg, sec, n-1} , and the filter coefficient τ is configured to be 0.6. In this embodiment, the filtering is performed N1 times in the activation determination period, and the filtering is performed N2 times in the deactivation determination period.

As shown in S704 of FIG. 7, the conditions for the activation judgment comparison correspond to the activation conditions 11 and 12 in the above embodiments 1 and 2, and in implementation, in the network scenario in which the DC-HSUPA terminal is prioritized, the UNHAPPY threshold D1 of the condition 11 may be The setting is 70%; the uplink secondary carrier load threshold D2 of condition 12 is set to a scenario that is relatively easy to satisfy, for example, 98% is configured, and the current average load of the secondary carrier cell is less than 98%, and activation may be considered. D2 can be configured to be 60% with priority given to the overall performance of the network. This embodiment can configure the threshold according to different network scenarios.

In S704 shown in Fig. 7, the conditions of the deactivation comparison correspond to the deactivation condition 21, the condition 22, the condition 23, and the condition 24 in the above embodiments 1 and 2. When implemented, the UNHAPPY Threshold D3 of Condition 22 is configured to be 50%. In condition 23, the resource occupied by the current UE release secondary carrier can be used for other purposes. When the user is in use, the HAPPY status of other UEs on the secondary carrier is detected. When other UNHAPPY users are available, the resources released by the UE can be used to avoid resource waste. In this embodiment, the corresponding threshold value can be configured according to different network scenarios.

The following is a schematic diagram of the flow diagram of the secondary carrier activation determination in the above, as shown in FIG. 8, including:

S801: In the uplink secondary carrier idle state (ie, deactivated), the activation determination delay timer is timed;

S802: The activation determination delay time is reached, if yes, go to S803; if not, go to S801;

S803: determining whether the ratio of UNHAPPY and HAPPY+UNHAPPY in the activation determination period and the average load of the uplink secondary carrier cell satisfy the activation setting condition; if yes, go to S804; if not, go to S801;

S804: Set the uplink secondary carrier to be active, and configure the secondary carrier resource.

S805: determining whether the secondary carrier resource is configured successfully, if yes, go to S806; if not, go to S801;

S806: notify the user terminal to activate the uplink secondary carrier, and start a deactivation determination delay timer.

As shown in the activation decision flow chart shown in FIG. 8, in the implementation, the activation determination period T1 is in the order of milliseconds, and is set to the scheduling period of the N1 HSUPA users, the scheduling period RTT is 16 ms, the N1 is configured as 10, and the activation determination period T1 is 160 ms. . The deactivation delay time is set to the second level, which can be H1 activation decision cycle units, and H1 is set to 40, that is, no deactivation operation is performed within 6.4 seconds of the initial activation. The size of N1 and H1 can be dynamically configured according to network and service scenarios.

The following is a schematic diagram of the flow diagram of the secondary carrier deactivation determination in the above, as shown in FIG. 9, including:

S901: The uplink secondary carrier activation state is activated, and the determination delay timer is counted;

S902: Deactivation determines whether the delay time is reached, if yes, go to S903; if not, go to S901;

S903: determining whether the secondary carrier air interface is not synchronized or out of synchronization, if yes, go to S904; if not, go to S901;

S904: judging the UNHAPPY and HAPPY+UNHAPPY statistics in the deactivation determination period Whether the ratio meets the activation setting condition, that is, whether the condition 22 is satisfied; if yes, go to S905; if not, go to S907;

S905: Set the uplink secondary carrier to be deactivated, and recover the secondary carrier resource.

S906: Notify the user terminal to deactivate the uplink secondary carrier, and start an activation determination delay timer.

S907: determining whether there is another user terminal that needs the load resource released by the secondary carrier in the uplink secondary carrier cell, and whether the ratio of the average load K2 to the preset target load K is greater than or equal to the fourth ratio threshold D4; The above condition 23 and condition 24 are satisfied; if yes, go to S905; if not, go to S901.

As shown in FIG. 9 , in the implementation, the deactivation determination period T2 is a millisecond level, and is set to a scheduling period of N2 HSUPA users, the scheduling period RTT is 16 ms, N2 is configured to 10, and the deactivation period T2 is deactivated. It is 160ms. Set the activation delay time to the second level, which can be H2 activation decision cycle units, H2 is set to 20, that is, the activation operation is not performed within 3.2 seconds of the deactivation. The N2 and H2 sizes can be dynamically configured according to network and service scenarios.

One of ordinary skill in the art will appreciate that all or a portion of the steps of the above-described embodiments can be implemented using a computer program flow, which can be stored in a computer readable storage medium, such as on a corresponding hardware platform (eg, The system, device, device, device, etc. are executed, and when executed, include one or a combination of the steps of the method embodiments.

Alternatively, all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve.

The devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.

When the device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium. The above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

Industrial applicability

The solution provided by the embodiment of the present invention can ensure the uplink transmission rate of the DC-HSUPA while saving the consumption of the network dynamic resources.

Claims

An uplink secondary carrier state control method includes:

Obtaining a demand status of the user terminal and a load status of the uplink secondary carrier cell associated with the user terminal;

And setting an uplink secondary carrier activation state of the user terminal according to a required state of the user terminal and a load state of the uplink secondary carrier cell.
The uplink secondary carrier state control method according to claim 1, wherein the demand of the user terminal comprises a traffic demand and a transmit power requirement.
The uplink secondary carrier state control method according to claim 2, wherein acquiring the demand status of the user terminal comprises:

Receiving an enhanced dedicated physical control channel E-DPCCH frame sent by the user terminal according to a preset time interval, where the D-DPCCH frame includes a satisfactory HAPPY indication reflecting a user terminal traffic demand and a transmission power requirement, and the HAPPY indication includes a satisfactory HAPPY And dissatisfied with UNHAPPY.
The uplink secondary carrier state control method according to claim 3, wherein the load state of the uplink secondary carrier cell is an average load of the uplink secondary carrier cell.
The uplink secondary carrier state control method according to claim 4, before the acquiring the state of the user terminal and the load state of the uplink secondary carrier cell associated with the user terminal, the method further includes:

Determining whether the current uplink secondary carrier activation state of the user terminal is active, and if yes, acquiring an uplink secondary carrier deactivation determination period of the user terminal; if not, acquiring an uplink secondary carrier activation determination period of the user terminal.
The uplink secondary carrier state control method according to claim 5, wherein if the current uplink secondary carrier activation state of the user terminal is deactivated, according to the demand state of the user terminal and the load state of the uplink secondary carrier cell Setting an uplink secondary carrier activation state of the user terminal includes:

Counting the UNHAPPY and the received in the uplink secondary carrier activation determination period a ratio of HAPPY+UNHAPPY; and obtaining an average load of the uplink secondary carrier cell in the uplink secondary carrier activation determination period;

Determining whether the ratio is greater than the first ratio threshold, and determining whether the ratio of the average load to the preset target load is less than a second ratio threshold; if yes, setting the uplink secondary carrier activation state of the user terminal to be active.
The uplink secondary carrier state control method according to claim 5, wherein the current uplink secondary carrier activation state of the user terminal is activated, and the setting is performed according to a demand state of the user terminal and a load state of the uplink secondary carrier cell. Before the uplink secondary carrier activation state of the user terminal, the method further includes: determining whether the secondary carrier air interface is not synchronized or out of synchronization;

Setting the uplink secondary carrier activation state of the user terminal according to the required state of the user terminal and the load state of the uplink secondary carrier cell includes:

And calculating a ratio of the received value of the UNHAPPY and the HAPPY+UNHAPPY in the uplink secondary carrier deactivation determination period; and acquiring an average load of the uplink secondary carrier cell in the uplink secondary carrier deactivation determination period;

Determining whether the ratio is less than a third ratio threshold, and if yes, setting an uplink secondary carrier activation state of the user terminal to a deactivated state; if not, determining whether the uplink secondary carrier cell still needs to be released by the secondary carrier The other user terminal of the load resource, and whether the ratio of the average load to the preset target load is greater than or equal to a fourth ratio threshold, and if yes, setting the uplink secondary carrier activation state of the user terminal to a deactivated state.
The uplink secondary carrier state control method according to claim 6, after the activation of the uplink secondary carrier activation state of the user terminal is activated, the method further includes:

And setting a deactivation determination delay time of the user terminal, and performing deactivation determination on the user terminal within the deactivation determination delay time.
The uplink secondary carrier state control method according to claim 7, wherein after the uplink secondary carrier activation state of the user terminal is set to be deactivated, the method further includes:

The activation determination delay time of the user terminal is set, and the activation determination is not performed on the user terminal within the activation determination delay time.
An uplink secondary carrier state control device includes: an information acquisition module and a state setting module;

The information acquiring module is configured to: acquire a demand status of the user terminal, and a load status of the uplink secondary carrier cell associated with the user terminal;

The state setting module is configured to: set an uplink secondary carrier activation state of the user terminal according to a required state of the user terminal and a load state of the uplink secondary carrier cell.
The uplink secondary carrier state control apparatus according to claim 10, wherein the demand of the user terminal comprises a traffic demand and a transmission power requirement.
The uplink secondary carrier state control device according to claim 11, wherein the information acquisition module comprises a frame acquisition sub-module, configured to: receive an enhanced dedicated physical control channel E-DPCCH frame sent by the user terminal according to a preset time interval. And the D-DPCCH frame includes a satisfactory HAPPY indication reflecting a user terminal traffic demand and a transmission power requirement, where the HAPPY indication includes a satisfactory HAPPY and an unsatisfactory UNHAPPY.
The uplink secondary carrier state control device according to claim 12, wherein the load state of the uplink secondary carrier cell is an average load of the uplink secondary carrier cell; the information acquiring module further includes a load acquisition submodule, which is set to : Acquiring an average load of the uplink secondary carrier cell.
The uplink secondary carrier state control apparatus according to claim 13, further comprising a determining module and a period setting module,

The determining module is configured to determine, before the information acquiring module acquires the demand status of the user terminal and the load status of the uplink secondary carrier cell that is associated with the user terminal, whether the current uplink secondary carrier activation status of the user terminal is If yes, the cycle setting module is configured to obtain an uplink secondary carrier deactivation determination period of the user terminal; if not, the cycle setting module is notified to obtain an uplink secondary carrier activation determination period of the user terminal.
The uplink secondary carrier state control apparatus according to claim 14, wherein the state setting module comprises a statistical submodule and a processing submodule;

The statistics submodule is configured to: determine, by the determining module, the current uplink auxiliary of the user terminal When the wave activation state is deactivated, the ratio of the UNHAPPY and the HAPPY+UNHAPPY received in the uplink secondary carrier activation determination period is counted, and the average load of the uplink secondary carrier cell in the uplink secondary carrier activation determination period is obtained. ;

The processing sub-module is configured to: determine whether the ratio is greater than a first ratio threshold, and determine whether a ratio of the average load to a preset target load is less than a second ratio threshold; if yes, setting an uplink auxiliary of the user terminal The carrier activation status is active.
The uplink secondary carrier state control apparatus according to claim 14, wherein the state setting module comprises an air interface determining submodule, a statistics submodule, and a processing submodule;

The air interface determining sub-module is configured to: when the determining module determines that the current uplink secondary carrier activation state of the user terminal is active, determine whether the secondary carrier air interface is not synchronized or loses synchronization; if yes, notify the statistics sub-module to count The ratio of the received UNHAPPY to HAPPY+UNHAPPY in the uplink secondary carrier deactivation determination period, and the average load of the uplink secondary carrier cell in the uplink secondary carrier deactivation determination period;

The processing submodule is configured to: determine whether the ratio is less than a third ratio threshold, and if yes, set an uplink secondary carrier activation state of the user terminal to a deactivated state; if not, determine whether the uplink secondary carrier cell is There is also another user terminal that needs the load resource released by the secondary carrier, and whether the ratio of the average load to the preset target load is greater than or equal to a fourth ratio threshold, and if yes, setting the uplink secondary carrier activation state of the user terminal To deactivate the state.
A base station includes a memory and a processor; the memory is configured to: store at least one program module, the processor configured to: invoke the at least one program module to perform the uplink of any one of claims 1-9 The steps in the secondary carrier state control method.
A computer readable storage medium storing computer executable instructions for performing the method of any of claims 1-9.