TW201349895A - Method of optimizing radio link monitoring window parameter in radio heterogeneous communication network - Google Patents

Abstract

The invention relates to a method of optimizing a radio link monitoring window parameter in a user equipment of a radio heterogeneous communication network, the radio heterogeneous communication network including a macro cell and a small cell, the method including the steps of: receiving a first radio link monitoring window parameter and a second radio link monitoring window parameter from an e NB of the macro cell; using the first parameter below the second parameter as the radio link monitoring window parameter; determining whether the user equipment is close to the small cell; and if a determination result is negative, then continuing the use of the first parameter as the radio link monitoring window parameter, or if the determination result is positive, then using the second parameter as the radio link monitoring window parameter. The user equipment uses a third parameter obtained from an e NB of the small cell as the radio link monitoring window parameter after being handed over to the small cell. All these three parameters are related to the motion speed. With the solution of the invention, different time values of radio link invalidation can be set for different scenarios in a heterogeneous network to thereby improve mobility performance.

Description

Method for optimizing parameters of wireless link monitoring window in wireless heterogeneous communication network

The present invention relates to wireless heterogeneous communication networks, and more particularly to methods for optimizing wireless link monitoring window parameters in a wireless communication network.

The Heterogeneous Network (HetNet) mobility improvement of LTE is discussed in 3GPP. The switching technology of high-speed mobile user equipment is a difficult point in HetNet technology. In the RAN2 heterogeneous network mobility improvement, radio link failure (RLF) caused by heterogeneous network mobility is an important research topic in RAN2. It can be seen from the simulation that the switching performance of the high-speed mobile user equipment deteriorates mainly because the coverage of the "low transmission power node" is too small. Most of these handover failures eventually result in a radio link failure. Since the consumption of the radio link failure is large (even if it is possible to recover, it will still cause a large service interruption), it is desirable to further reduce the probability of occurrence of the radio link failure and reduce the overall service interruption time when the radio link fails. .

The RLF decision of the user equipment is highly dependent on the setting of the radio link monitoring window parameters. In a traditional macro cellular system, a user equipment performs a channel quality indicator (CQI) measurement. The amount is used for wireless link monitoring. If the long-term average wideband CQI is below a predetermined threshold, the wireless link monitoring window (shown as parameter T310 in the current standard) will be triggered and timing will begin, indicating poor radio link conditions. Therefore, the transmission of measurement reports and/or handover commands by the user equipment will be very easy to fail and cause the handover to fail. The measurement report and the switch command will be retried before the T310 expires. If the average wideband CQI measurement of the radio link monitoring before the expiration of T310 is greater than another predetermined threshold, the user equipment will stop timing of T310 and set it to zero, where the radio link is considered to have recovered. If the measurement of the radio link monitoring does not exceed another predetermined threshold until T310 expires, the user equipment reports a radio link failure.

The setting of the T310 is actually used to determine the radio link failure caused by the wireless coverage blind spot. In the traditional T310 setup, the base station only has a T310 value for the user equipment. However, in heterogeneous networks, small honeycombs, such as the Pico Cell and the Femto Cell, are introduced to reduce the load on the giant honeycomb, or to enhance the coverage of the giant honeycomb at the edge of the giant honeycomb. The situation on the road is more complicated. Traditional T310 settings are not available for different scenarios in a heterogeneous network.

Based on the above considerations, for heterogeneous networks containing giant hives and small hives, it would be very beneficial to be able to optimize the settings of the wireless link monitoring window for different possible scenarios.

According to a first aspect of the present invention, a wireless heterogeneous communication is proposed A method for optimizing a wireless link monitoring window parameter in a user equipment of a network, the wireless heterogeneous communication network including a giant honeycomb and a small honeycomb, the method comprising the steps of: receiving a first wireless link monitoring window from a base station of the giant honeycomb a parameter and a second wireless link monitoring window parameter, wherein the first parameter is smaller than the second parameter; using the first parameter as a wireless link monitoring window parameter; determining whether the user equipment is close to the small honeycomb; if the determination result is no Then, the first parameter is continuously used as a parameter of the wireless link monitoring window, and it is repeatedly determined whether the user equipment is close to the small honeycomb; if the determination result is yes, the second parameter is used as a wireless link monitoring window parameter.

In addition, if it is determined that the user equipment is close to the small cell, it is further determined whether the user equipment has switched to the small cell, and if the determination result is yes, the third parameter obtained from the base station of the small cell is used as the wireless link monitoring window. a parameter, wherein the third parameter is smaller than the first parameter; if the determination result is no, it continues to determine whether the user equipment has left the small honeycomb coverage area, and if the determination result is yes, the first parameter is used as the wireless chain The road monitors the window parameter and continues to determine whether the user equipment is close to the small honeycomb; if the determination result is no, the second parameter is continuously used as the wireless link detection window parameter.

In an embodiment in accordance with the invention, the first parameter and/or the second parameter are related to the speed of movement of the user equipment. In another embodiment in accordance with the invention, the second parameter is related to a maximum service interruption time of the current service type of the user equipment. In addition, the third parameter is related to the motion speed of the user equipment, and/or the largest industry of the current service type of the user equipment. The interruption time and the recovery time of the wireless link failure are related.

According to a second aspect of the present invention, a method for optimizing parameters of a wireless link monitoring window in a user equipment of a wireless heterogeneous communication network is provided. The wireless heterogeneous communication network includes a giant honeycomb and a small honeycomb, and the method includes the following steps Receiving, by the base station of the giant honeycomb, a first radio link monitoring window parameter as a radio link monitoring window parameter; determining whether the user equipment is close to the small hive; and if the determination result is yes, sending the first to the giant cellular base station A request message is sent to the mega-base station to send a second radio link monitoring window parameter to the user equipment as a radio link monitoring window parameter, wherein the first parameter is smaller than the second parameter.

According to a third aspect of the present invention, there is provided a method for optimizing a parameter of a wireless link monitoring window in a base station of a small honeycomb of a wireless heterogeneous communication network, the wireless heterogeneous communication network including a giant honeycomb and a small honeycomb, the method comprising The following steps: configuring a third radio link monitoring window parameter for the user equipment, where the third radio link monitoring window parameter is smaller than the first radio link monitoring window parameter and the second wireless configured by the base station of the giant cell for the user equipment a link monitoring window parameter; sending the third radio link monitoring window parameter to the user equipment.

According to a fourth aspect of the present invention, there is provided a method for optimizing a parameter of a wireless link monitoring window in a base station of a giant cellular of a wireless heterogeneous communication network, the wireless heterogeneous communication network including a giant honeycomb and a small honeycomb, the method comprising The following steps: configuring a first radio link monitoring window parameter and a second radio link monitoring window parameter for the user equipment, where the first parameter is smaller than the second parameter; sending the first parameter and the second parameter to the user setting Ready.

According to a fifth aspect of the present invention, there is provided a method for optimizing a parameter of a wireless link monitoring window in a base station of a giant cellular of a wireless heterogeneous communication network, the wireless heterogeneous communication network including a giant honeycomb and a small honeycomb, the method comprising The following steps: configuring a first radio link monitoring window parameter and a second radio link monitoring window parameter for the user equipment, where the first parameter is smaller than the second parameter; sending the first parameter as a radio link monitoring window parameter After receiving the first request message from the user equipment, the second parameter is sent to the user equipment as a radio link monitoring window parameter.

If ABS is not available in a small hive, the user equipment connected to the giant hive will suffer from large disturbances from the small hive as it passes through the small honeycomb and the small honeycomb is not allowed or cut into failure. A series of processes will then be required, for example, reporting that the wireless link with the giant hive fails and attempting to establish a connection with the small hive, but the user equipment quickly leaves the small hive and eventually reconnects with the giant hive. So these processes waste a lot of signaling. In accordance with the solution of the present invention, processes can be avoided and signaling between base stations or between base stations and user equipment can be reduced.

According to the solution of the present invention, mobility performance can be improved by setting different radio link failure time values for different scenarios in a heterogeneous network, including reducing the probability of radio link failure and reducing service interruption time, while It also reduces the signaling consumption for ensuring mobility and avoids unnecessary processes, reducing signaling between base stations or between base stations and user equipment.

The various aspects of the invention will be more apparent from the description of the specific embodiments.

100‧‧‧ Heterogeneous wireless communication network

110‧‧‧ Giant Beehive

120‧‧‧ tiny hive

130‧‧‧User equipment

T310‧‧‧Wireless Link Monitoring Window Parameters

Other features, objects, and advantages of the invention will be apparent from the embodiments of the invention.

Figure 1 shows a network topology diagram of a heterogeneous wireless communication network.

2 shows a flow chart of a method in accordance with an embodiment of the present invention.

Figure 3 shows a flow chart of a method in accordance with another embodiment of the present invention.

4 shows a flow chart of a method in accordance with yet another embodiment of the present invention.

Throughout the drawings, the same or similar reference numerals indicate the same or similar devices (module) or steps.

In the detailed description of the preferred embodiments that follow, reference is made to the accompanying drawings that form a part of the invention. The accompanying drawings illustrate, by way of example, particular embodiments The exemplary embodiments are not intended to be exhaustive of all embodiments in accordance with the invention. It is to be understood that other embodiments may be utilized and structural or logical modifications may be made without departing from the scope of the invention. Therefore, the following detailed description is not to be construed as limiting the scope of the invention.

Figure 1 shows a network topology diagram of a heterogeneous wireless communication network. In the embodiment shown in Figure 1, the small honeycomb can be implemented as a tiny honeycomb, a technique in the art One can understand that a small hive can also be a home hive.

The heterogeneous wireless communication network 100 as shown in FIG. 1 includes a giant honeycomb 110 and a tiny honeycomb 120 and a user device 130 coupled to the giant honeycomb 110. The tiny honeycombs 120 in the heterogeneous mesh are used to reduce the load on the giant honeycomb 110, and it is possible to place the tiny honeycombs 120 at the edges of the giant honeycombs 110 to enhance the coverage of the giant honeycombs 110. However, the simulation results show that the high-speed moving user equipment has a higher probability of radio link failure when passing through the tiny honeycomb.

For example, in the embodiment illustrated in FIG. 1, user device 130 moves through the microcells 120 in a direction from A to D along a dashed line. The point A indicates the location where the user equipment 130 finds the tiny honeycomb, the point B indicates the position within the tiny honeycomb, the point C indicates the edge of the tiny honeycomb, and the point D indicates the location where the user equipment resumes connection with the giant honeycomb.

In accordance with an embodiment of the present invention, in different mobility scenarios in a heterogeneous network, user equipment uses different wireless links to monitor window parameters. In the following description, the radio link monitoring window parameter is represented as T310.

The following describes the different mobility scenarios for such user equipment motion routes:

Scene 1: Giant Hive to Giant Hive

In a normal scenario, the user equipment is connected to the giant hive and predicts that there is no handover or only a giant pair of giant handovers, traditionally containing only the normal T310 values in the giant cellular system.

Scene 2: Giant Honeycomb to Tiny Hive (1) The situation that the user equipment that does not allow high-speed motion switches to the tiny hive

The user equipment 130 connected to the giant hive enters the tiny hive, for example at point B, if it does not switch to the tiny hive, it will suffer interference from the tiny hive, and the user device 130 will suffer from the RLF and possibly trigger the re-establishment process. First the user equipment will perform a honeycomb selection to find a suitable hive. In this case, it is highly likely that the tiny honeycomb 120 is selected because the tiny honeycomb 120 signal is strong. And since the user equipment 130 is moving fast, it is likely to move to the edge of the tiny hive 120, such as point C, during the random access procedure. The user equipment 130 is disconnected from the giant cellular and the Radio Resource Control (RRC) connection re-establishment process will fail. User equipment 130 then re-enters the giant hive and reconnects with the giant hive at point D.

Thus, in accordance with an embodiment of the present invention, for this case, the wireless link monitoring window parameters are expanded to a larger value to ensure that the user equipment 130 remains connected to the giant cellular 110.

(2) Allowing high-speed mobile user equipment to switch to a tiny hive (2.a) The user equipment cuts into the tiny hive successfully and cuts out the failure.

If the user equipment is able to switch to the tiny hive and the handover is complete, the user equipment will release the connection to the giant hive. Therefore, the T310 of the giant honeycomb is no longer used, and the T310 of the tiny honeycomb configuration may be received. When the user equipment cuts out from the tiny honeycomb to the giant honeycomb, the probability of the handover failure is very high based on the simulation result. If the handover fails and it is unlikely to restore the wireless connection to the tiny hive, then the giant hive will need to be reconnected as soon as possible. because Thus, in this case, after the user equipment successfully switches to the tiny hive, T310 should be set back to a short value.

(2.b) The user equipment fails to cut into the tiny honeycomb, and then leaves the tiny honeycomb coverage area.

In this case, the user equipment 130 is at a higher speed and is likely to pass through the tiny hive 120 in a very short time. When the user equipment 130 moves into the tiny hive 120, such as at point B, it will suffer interference from the tiny hive 120 and cause the micro-hollow 120 to fail to cut.

In this case, in accordance with an embodiment of the present invention, a longer T310 value is used as a wireless link monitoring window parameter, and if the user equipment attempts to cut into a tiny hive but fails, it may still remain connected to the giant hive. Even if the wireless connection to the giant hive is very poor due to the interference of the tiny hive, it will not cause RLF until the T310 expires. Before the T310 expires, if the user equipment passes through the tiny hive, the wireless connection to the giant hive will be restored and the T310 will be set to the normal value.

Scene 3 tiny hive to giant hive

For this case, T310 is set to a short value according to an embodiment of the present invention because the quality of the wireless connection with the tiny honeycomb is very easy to deteriorate in a short time, and it is unlikely to recover in a short time.

Scene 4 tiny hive to tiny hive

For this case, T310 is set according to an embodiment of the present invention. It is a short value because the user equipment is unlikely to return to the tiny hive of the original service in a short time. The setting should be the same as the setting of the tiny honeycomb to the giant honeycomb.

2 shows a flow chart of a method in accordance with one embodiment of the present invention.

In method step S201, the macro-hit base station 110 configures the first radio link monitoring window parameter and the second radio link monitoring window parameter for the user equipment 130, wherein the first parameter is smaller than the second parameter.

In an embodiment in accordance with the invention, the first parameter and/or the second parameter are related to the speed of movement of the user equipment. For example, the higher the speed of movement of the user equipment, the smaller the first parameter and/or the second parameter. In another embodiment in accordance with the invention, the second parameter relates to a maximum service interruption time of the current service type of the user equipment. For example, the second parameter is less than or equal to the maximum allowed service interruption time.

In method step S201, the giant cellular base station 110 transmits the first parameter and the second parameter to the user equipment 130.

In method step S203, the user equipment 130 uses the first parameter as a radio link monitoring window parameter. In method step S204, the user equipment 130 determines whether it is close to the micro-homing. If the determination result is no, the method returns to the method step S203, continues to use the first parameter as the radio link monitoring window parameter, and repeats the method step S204. If the result of the determination is yes, the second parameter is used as the radio link monitoring window parameter.

Specifically, in method step S203, the user equipment 120 determines whether to approach the micro-homing by determining whether the micro-homing is successfully recognized and the switching condition is satisfied.

In an embodiment in accordance with the present invention, after the user equipment 130 determines that the micro-homed 120 has been approached, the second parameter is used as the wireless link monitoring window parameter, and further in the method step S206, it is determined whether the user equipment 130 has switched to the micro. Hive 120. If the result of the determination is yes, the third parameter obtained from the base station of the tiny cell is used as a radio link monitoring window parameter in method step S209, wherein the third parameter is smaller than the first parameter. Here, those skilled in the art can understand that the micro-cell base station configures the third radio link monitoring window parameter for the user equipment 130 in the method step S207, where the third radio link monitoring window parameter is smaller than the base of the giant hive. The first radio link monitoring window parameter and the second radio link monitoring window parameter configured by the station for the user equipment. In method step S208, the micro-cell base station transmits the third radio link monitoring window parameter to the user equipment.

In an embodiment in accordance with the invention, the third parameter is related to the speed of movement of the user equipment, and/or to the maximum service interruption time of the current service type of the user equipment and the recovery time of the wireless link failure. For example, the higher the speed of movement of the user equipment, the smaller the third parameter. For another example, the sum of the third parameter and the recovery time of the wireless link failure is less than or equal to the maximum allowed service interruption time.

If the user equipment does not switch to the micro-homed 120, for example, the user equipment that does not allow high-speed motion as described above is switched from the giant cellular to the tiny cellular, or the user equipment switches from the giant cellular to the micro-homing, the method continues in the method step S210. Determine whether the user equipment has left the tiny hive. If the result of the determination is yes, then return to method step S203, The first parameter is continuously used as the radio link monitoring window parameter, and step S204 is continued; if the judgment result is no, the second parameter is continuously used as the radio link detection window parameter.

Specifically, in method step S210, it is determined whether the channel quality indication of the giant cell is greater than a predetermined threshold, and if the channel quality indicator is greater than or equal to the predetermined threshold, determining that the user equipment has left the micro-homing coverage; if the channel quality indicator is less than a predetermined threshold , to determine that the user equipment has not left the tiny hive coverage.

Figure 3 shows a flow chart of a method in accordance with another embodiment of the present invention. In this embodiment in accordance with the invention, both the micro-cell base station and the giant cellular base station configure the three radio link monitoring window parameters for the user equipment. Therefore, it is not necessary to distinguish the configuration of the wireless link monitoring window parameters according to the size of the honeycomb, and the system configuration is convenient and easy to implement in a standardized manner.

Specifically, in method step S301 and step S307, the macro-hit base station and the micro-hive base station configure the three radio link monitoring window parameters for the user equipment, and in steps S302 and S308, the giant hive and The microcells respectively send the above three radio link monitoring window parameters to the user equipment. In step S303, the user equipment 130 takes the smallest of the three parameters as the third parameter, the largest one as the second parameter, and the remaining one as the first parameter. The remaining method steps are similar to those described in connection with the embodiment shown in FIG. 2, and are not described herein again. For example, after switching to the micro-homed 120, the user equipment 130 selects the smallest third parameter from among the three parameters as the radio link monitoring window parameter.

Those skilled in the art can understand that the giant honeycomb base station is based. Configuring and transmitting the third parameter and the small cellular base station for the user equipment configures the first parameter and the second parameter for the user equipment is not essential to the implementation of the present invention.

4 shows a flow chart of a method in accordance with another embodiment of the present invention.

Different from the embodiment shown in FIG. 2, the giant cellular base station and the micro cellular base station do not send all available wireless link detection window parameters to the user equipment in the initial stage, but respond to the request of the user equipment. Reconfigure the wireless link detection window parameters for the user equipment.

In particular, the giant cellular base station only provides the first parameter to the user equipment in method step S401 and transmits the first parameter to the user equipment 130 in method step S402. If the user equipment determines in step S404 that the user equipment 130 is close to the micro-homed 120, then in a method step S405 a first request message is sent to the giant cellular base station. After receiving the first request message, the giant cellular base station configures a second parameter for the user equipment in method step S406, wherein the first parameter is smaller than the second parameter. The second parameter is then sent to the user equipment in method step S407.

It can be understood by those skilled in the art that if the user equipment 130 detects in the method step S409 that the user equipment does not switch to the micro-homing, similar to FIG. 2, the user equipment 130 further determines whether the user equipment has left the micro-homing. If the result of the determination is yes, a second request message is sent to the giant cellular base station to request the giant cellular base station to reconfigure the wireless link detection window parameters for the user equipment 130. After receiving the second request message, the giant cellular base station sends the first parameter to the user equipment 130. User device 130 returns to method step S403 and proceeds to perform the steps S404. If it is determined that the user equipment has not left the tiny hive, the second parameter is continuously used as the radio link detection window parameter. The steps in the embodiment shown in FIG. 3 that are similar to those in FIG. 2 are not described herein again.

According to the solution of the present invention, mobility performance can be improved by setting different radio link failure time values for different scenarios in a heterogeneous network, including reducing the probability of radio link failure and reducing service interruption time, while It also reduces the signaling consumption for ensuring mobility and avoids unnecessary processes, reducing signaling between base stations or between base stations and user equipment.

It is obvious to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be embodied in other specific forms without departing from the spirit or basic characteristics of the invention. Therefore, the embodiments are to be considered as illustrative and not limiting in any way. In addition, it is obvious that the word "comprising" does not exclude other elements and steps, and the word "a" does not exclude the plural. A plurality of elements recited in the scope of the device application patent may also be implemented by one element. The first, second, etc. words are used to denote names and do not denote any particular order.

110‧‧‧ Giant Beehive

120‧‧‧ tiny hive

130‧‧‧User equipment

Claims (15)

A method for optimizing parameters of a wireless link monitoring window in a user equipment of a wireless heterogeneous communication network, the wireless heterogeneous communication network including a giant honeycomb and a small honeycomb, the method comprising the following steps: a. from the base station of the giant honeycomb Receiving a first radio link monitoring window parameter and a second radio link monitoring window parameter, wherein the first parameter is smaller than the second parameter; b. using the first parameter as a radio link monitoring window parameter; c. determining the user Whether the device is close to the small honeycomb; d1. If the judgment result is no, continue to use the first parameter as the wireless link monitoring window parameter, and repeat step c; d2. If the determination result is yes, the second parameter is used. As a wireless link monitoring window parameter. The method according to claim 1, wherein in the step c, it is judged whether the user equipment is close to the small honeycomb by judging whether the small honeycomb is successfully recognized and the switching condition is satisfied. The method of claim 1, wherein the step d2 further comprises: continuing to determine whether the user equipment has switched to the small honeycomb; if the determination result is yes, using the base station from the small honeycomb The third parameter is a wireless link monitoring window parameter, wherein the third parameter is smaller than the first parameter; if the determining result is no, determining whether the user equipment has left the small honeycomb coverage area; - If the result of the determination is yes, the first parameter is used as the radio link monitoring window parameter, and step c is continued; if the result of the determination is no, the second parameter is continuously used as the radio link detection window parameter. The method of claim 3, wherein in the step of determining whether the user equipment leaves the small honeycomb coverage, determining whether the channel quality indication of the giant honeycomb is greater than a predetermined threshold, if the channel quality indication is greater than Or equal to the predetermined threshold, determining that the user equipment has left the small cell; if the channel quality indicator is less than the predetermined threshold, determining that the user equipment has not left the small cell. The method of claim 1, wherein the first parameter and/or the second parameter are related to a speed of movement of the user equipment. The method of claim 1, wherein the second parameter is related to a maximum service interruption time of a current service type of the user equipment. The method of claim 3, wherein the third parameter is related to the motion speed of the user equipment, and/or the maximum service interruption time of the current service type of the user equipment and the recovery time of the radio link failure. related. The method of claim 1, wherein the small honeycomb is a tiny honeycomb or a family honeycomb comprising an Open User Group (OSG) and a closed user group and a hybrid mode. Optimizing wireless chain in user equipment of wireless heterogeneous communication network A method of monitoring window parameters, the wireless heterogeneous communication network comprising a giant honeycomb and a small honeycomb, the method comprising the steps of: i. receiving a first wireless link monitoring window parameter from the base station of the giant honeycomb as a wireless link monitoring a window parameter; ii. determining whether the user equipment is close to the small honeycomb; if the determination result is yes, sending a first request message to the giant cellular base station to request the giant cellular base station to send the second wireless chain to the user equipment The road monitoring window parameter is a wireless link monitoring window parameter, wherein the first parameter is smaller than the second parameter. A method for optimizing parameters of a wireless link monitoring window in a base station of a small honeycomb of a wireless heterogeneous communication network, the wireless heterogeneous communication network including a giant honeycomb and a small honeycomb, the method comprising the following steps: - configuring a third for the user equipment a wireless link monitoring window parameter, the third wireless link monitoring window parameter being smaller than a first wireless link monitoring window parameter and a second wireless link monitoring window parameter configured by the base station of the giant cell for the user equipment; The third wireless link monitoring window parameter is sent to the user equipment. The method of claim 10, further comprising: - configuring a first radio link monitoring window parameter and a second radio link monitoring window parameter for the user equipment; wherein the first parameter and the second parameter The first parameter and the second parameter configured by the base station of the giant honeycomb for the user equipment are the same; - Sending the first parameter and the second parameter to the user equipment. A method for optimizing parameters of a wireless link monitoring window in a base station of a wireless cellular heterogeneous communication network, the wireless heterogeneous communication network including a giant cellular and a small honeycomb, the method comprising the following steps: A. configuring a user equipment a radio link monitoring window parameter and a second radio link monitoring window parameter, wherein the first parameter is smaller than the second parameter; B. transmitting the first parameter and the second parameter to the user equipment. The method of claim 12, further comprising: - configuring a third radio link monitoring window parameter for the user equipment, wherein the third parameter is smaller than the first parameter; - transmitting the third parameter Give the user device. A method for optimizing parameters of a wireless link monitoring window in a base station of a wireless cellular heterogeneous communication network, the wireless heterogeneous communication network including a giant honeycomb and a small honeycomb, the method comprising the following steps: I. configuring a user equipment a radio link monitoring window parameter; II. transmitting the first parameter as a radio link monitoring window parameter to the user equipment; III. after receiving the first request message from the user equipment, configuring the second user equipment The wireless link monitors the window parameter, wherein the first parameter is smaller than the second parameter; IV. the second parameter is sent to the user equipment as a wireless link monitoring window parameter. The method of claim 14, wherein the method further comprises: the first parameter and/or the second parameter being related to a speed of movement of the user equipment.