CN104955156A

CN104955156A - Data sending method, apparatus, base station and user's device

Info

Publication number: CN104955156A
Application number: CN201410118067.5A
Authority: CN
Inventors: 周涵; 铁晓磊; 胡文权
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2014-03-26
Filing date: 2014-03-26
Publication date: 2015-09-30

Abstract

The embodiment of the invention provides a data sending method, an apparatus, a base station and a user's device. The method applied in the base station includes detecting the uplink interference situation of a cell, determining whether the uplink interference situation satisfies the preset interference scope or not, and if yes, sending a first control signal to instruct the user's device to start a time-division multiplex transmission mode which indicates employing a time-division mode to send DCH data on unlike carrier frequency. In this way, any user's device can send DCH data without changing a conventional network structure based on the time-division multiplex transmission mode when other user's devices do not send data. Accordingly, other user's devices may not send data when any one user's device sends DCH data based on the time-division multiplex transmission mode, thereby minimizing the probability of interference when user's devices send data.

Description

Data sending method, device, base station and user equipment

Technical Field

The invention belongs to the technical field of voice communication, and particularly relates to a data sending method, a data sending device, a base station and user equipment.

Background

The conventional High Speed Uplink Packet Access (HSUPA) data adopts scrambling codes to distinguish User Equipment (UE), and when a plurality of UEs perform HSUPA transmission simultaneously, that is, send Enhanced Dedicated Channel (E-DCH) data, because the scrambling codes are not orthogonal to each other, the E-DCH data sent by each UE will cause interference to other UEs, thereby reducing the system throughput.

To solve this problem, a TDM (Time Division multiplexing) scheduling mechanism is introduced for E-DCH data transmission. The TDM scheduling mechanism divides uplink air interface resources according to time, and only a few or even one UE can transmit E-DCH data in an uplink manner in one time resource, so that the condition that a plurality of UEs transmit data at the same time can be avoided, interference is reduced, and the system throughput rate is improved.

However, the TDM scheduling mechanism is only applicable to E-DCH data transmission, and if DCH (Dedicated Channel) voice data is transmitted by the UE, the TDM scheduling mechanism is not affected. Therefore, when the base station does not schedule one UE to transmit E-DCH data, the UE can still transmit DCH voice data, which may cause interference to other UEs, and reduce the performance of the TDM scheduling mechanism.

Disclosure of Invention

In view of this, embodiments of the present invention provide a data transmission method, an apparatus, a base station, and a user equipment, which are used to reduce interference of DCH data transmitted by other UEs when a UE transmits E-DCH data.

In a first aspect, an embodiment of the present invention provides a data sending method, which is applied to a base station, and the method includes:

detecting the uplink interference condition of a cell;

judging whether the uplink interference condition meets a preset interference range, wherein the preset interference range is an interference range received by the base station when the base station correctly receives enhanced dedicated channel E-DCH data sent by user equipment;

if so, sending a first control signaling to indicate the user equipment to enter a time division multiplexing transmission mode, wherein the time division multiplexing transmission mode is used for indicating that the dedicated channel DCH data is sent on an uplink carrier frequency in a time division mode, so that the probability that one user equipment sends the DCH data and interferes with data sent by other user equipment is reduced.

In a first possible manner of the first aspect, the method further sends a data transmission pattern while sending the first control signaling, where the data transmission pattern is used to instruct the user equipment to send a time division manner of DCH data.

In a second possible manner of the first aspect, the method further includes: instructing the user equipment to reduce the spreading factor of the DCH data after entering the time division multiplexing transmission mode;

or the method further comprises: and after the user equipment is instructed to enter the time division multiplexing transmission mode, reducing the spreading factor of the DCH data and improving the transmitting power of the user equipment.

With reference to the first aspect, or the first possible manner of the first aspect, or the second possible manner of the first aspect, in a third possible manner of the first aspect, the detecting an uplink interference situation of a cell includes: and detecting the total receiving power of the cell, wherein the total receiving rate of the cell is used for indicating the uplink interference condition of the cell.

With reference to the third feasible manner of the first aspect, in a fourth feasible manner of the first aspect, the determining whether the uplink interference condition meets a preset interference range includes: judging whether the total receiving power of the cell is higher than a first preset threshold or not, and whether the ratio of the receiving power of the DCH data to the total receiving power is higher than a second preset threshold or not;

and if the total receiving power of the cell is higher than a first preset threshold and the ratio of the receiving power of the DCH data to the total receiving power is higher than a second preset threshold, indicating that the uplink interference condition meets a preset interference range.

With reference to the fourth feasible manner of the first aspect, in a fifth feasible manner of the first aspect, if the total received power of the cell is lower than a first preset threshold or a ratio of the received power of the DCH data to the total received power is lower than a second preset threshold, it indicates that the uplink interference condition does not satisfy a preset interference range;

sending a second control signaling to instruct the user equipment to exit a time division multiplexing transmission mode.

With reference to the fourth feasible manner of the first aspect, in a sixth feasible manner of the first aspect, the method is applied to uplink voice data in DCH data, and the time division multiplexing transmission mode is used to instruct that the uplink voice data is sent in a time division manner on one uplink carrier frequency, so as to reduce a probability that one user equipment sends the uplink voice data and interferes with other data sent by other user equipments.

In a second aspect, an embodiment of the present invention provides a data sending method, which is applied to a user equipment, and the method includes:

receiving a first control signaling sent by a base station, wherein the first control signaling indicates the user equipment to enter a time division multiplexing transmission mode;

switching a transmission mode to a time division multiplexing transmission mode, wherein the time division multiplexing transmission mode is used for indicating that dedicated channel DCH data is sent on an uplink carrier frequency in a time division mode so as to reduce the probability that one user equipment sends the DCH data and interferes with data sent by other user equipment;

and transmitting the DCH data in the time division multiplexing transmission mode.

In a first possible approach of the second aspect, the method receives a data transmission pattern at the same time as receiving the first control signaling;

and in the time division multiplexing voice mode, the DCH data is sent by applying the data transmission pattern.

In a second possible manner of the second aspect, the method further includes: after switching to the time division multiplexing transmission mode, reducing the spreading factor of the DCH data;

or the method further comprises: and after switching to the time division multiplexing transmission mode, reducing the spreading factor of the DCH data and improving the transmitting power.

In a third possible manner of the second aspect, the method further includes:

receiving a second control signaling sent by a base station, wherein the second control signaling indicates that the user equipment exits a time division multiplexing transmission mode;

exiting the time division multiplexing transmission mode.

With reference to the second aspect or any one of the first to third possible manners of the second aspect, in a fourth possible manner of the second aspect, the method is applied to uplink voice data in the DCH data, and the time division multiplexing transmission mode is used to instruct that the uplink voice data is sent in a time division manner on one uplink carrier frequency, so as to reduce a probability that one user equipment sends the uplink voice data and interferes with other data sent by other user equipment.

In a third aspect, an embodiment of the present invention provides a data transmission apparatus, which is applied in a base station, and the apparatus includes:

a detecting unit, configured to detect an uplink interference situation of a cell;

a determining unit, configured to determine whether the uplink interference condition meets a preset interference range, where the preset interference range is an interference range that the base station receives when correctly receiving enhanced dedicated channel E-DCH data sent by a user equipment;

and the sending unit is used for sending a first control signaling to indicate the user equipment to enter a time division multiplexing transmission mode under the condition that the judgment unit judges that the uplink interference condition meets a preset interference range, wherein the time division multiplexing transmission mode is used for indicating that the dedicated channel DCH data is sent on one uplink carrier frequency in a time division mode so as to reduce the probability that one user equipment sends the DCH data and interferes with data sent by other user equipment.

In a first possible manner of the third aspect, the sending unit sends a data transmission pattern at the same time as the sending of the first control signaling, where the data transmission pattern is used to instruct the user equipment to send a time division manner of DCH data.

In a second feasible manner of the third aspect, the apparatus further includes: a first control unit;

the first control unit is configured to instruct the user equipment to reduce a spreading factor of the DCH data after entering the time division multiplexing transmission mode;

or the first control unit is configured to instruct the user equipment to reduce the spreading factor of the DCH data and increase the transmit power of the user equipment after entering the time division multiplexing transmission mode.

With reference to the third aspect or the first possible implementation manner of the third aspect or the second possible implementation manner of the third aspect, in a third possible implementation manner of the third aspect, the detecting unit detects an uplink interference situation of a cell, and includes: and detecting the total receiving power of the cell, wherein the total receiving rate of the cell is used for indicating the uplink interference condition of the cell.

With reference to the third feasible manner of the third aspect, in a fourth feasible manner of the third aspect, the determining unit determines whether the uplink interference condition meets a preset interference range, where the determining unit includes: judging whether the total receiving power of the cell is higher than a first preset threshold or not, and whether the ratio of the receiving power of the DCH data to the total receiving power is higher than a second preset threshold or not;

With reference to the fourth feasible manner of the third aspect, in a fifth feasible manner of the third aspect, the sending unit is further configured to send a second control signaling to instruct the ue to exit the tdm transmission mode when a total received power of the cell is lower than a first preset threshold or a ratio of the received power of the DCH data to the total received power is lower than a second preset threshold, where the total received power of the cell is lower than the first preset threshold or the ratio of the received power of the DCH data to the total received power is lower than the second preset threshold, which indicates that the uplink interference condition does not satisfy a preset interference range.

With reference to the fourth feasible manner of the third aspect, in a sixth feasible manner of the third aspect, the apparatus is adapted to uplink voice data in DCH data, and the time division multiplexing transmission mode is configured to instruct that the uplink voice data is sent in a time division manner on one uplink carrier frequency, so as to reduce a probability that one user equipment sends the uplink voice data and interferes with other data sent by other user equipments.

In a fourth aspect, an embodiment of the present invention further provides a base station, where the base station includes the data transmitting apparatus provided in any one of the sixth feasible manners of the third aspect to the third aspect.

In a fifth aspect, an embodiment of the present invention further provides a data sending apparatus, which is applied in a user equipment, where the apparatus includes:

a receiving unit, configured to receive a first control signaling sent by a base station, where the first control signaling indicates that the ue enters a time division multiplexing transmission mode;

a switching unit, configured to switch a transmission mode to a time division multiplexing transmission mode, where the time division multiplexing transmission mode is used to instruct that dedicated channel DCH data is sent in a time division manner on an uplink carrier frequency, so as to reduce a probability that one user equipment sends DCH data and interferes with data sent by other user equipment;

a sending unit, configured to send the DCH data in the time division multiplexing transmission mode.

In a first possible manner of the fifth aspect, the receiving unit receives a data transmission pattern while receiving the first control signaling;

the transmitting unit transmits the DCH data using the data transmission pattern in the time division multiplexing voice mode.

In a second possible manner of the fifth aspect, the apparatus further includes: a second control unit;

the second control unit is configured to reduce the spreading factor of the DCH data after switching to the time division multiplexing transmission mode;

or the second control unit is configured to reduce the spreading factor of the DCH data and increase the transmission power after switching to the time division multiplexing transmission mode.

In a third possible manner of the fifth aspect, the receiving unit is further configured to receive a second control signaling sent by the base station, where the second control signaling indicates that the ue exits the time division multiplexing transmission mode;

the device further comprises: a third control unit, configured to control the ue to exit the tdm transmission mode after the receiving unit receives the second control signaling.

With reference to the fifth aspect or any one of the first to third possible manners of the fifth aspect, in a fourth possible manner of the fifth aspect, the apparatus is adapted to apply to uplink voice data in the DCH data, and the time division multiplexing transmission mode is used to instruct that the uplink voice data is sent in a time division manner on one uplink carrier frequency, so as to reduce a probability that one user equipment sends the uplink voice data and interferes with other data sent by other user equipment.

In a sixth aspect, an embodiment of the present invention further provides a user equipment, including the data sending apparatus provided in any one of the fourth possible manners of the fifth aspect to the fifth aspect.

By the data transmission method provided by the technical scheme, the base station can detect the uplink interference condition of the cell, judge whether the uplink interference condition meets the preset interference range, and transmit the first control signaling if the uplink interference condition meets the preset interference range. The first control signaling can instruct the user equipment to enter a time division multiplexing transmission mode, and the time division multiplexing transmission mode can instruct the user equipment to transmit the DCH data in a time division mode on an uplink carrier frequency, so that any user equipment can transmit the DCH data when other user equipment does not transmit the data based on the time division multiplexing transmission mode on the premise of not changing the existing network architecture. Similarly, based on the time division multiplexing transmission mode, when any user equipment sends the E-DCH data, other user equipment can not send the data, and the probability of sending interference when the user equipment sends the data is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a flowchart of a data transmission method applied in a base station according to an embodiment of the present invention;

FIG. 2 is a diagram illustrating a UE transmitting data according to an embodiment of the present invention;

fig. 3 is another flowchart of a data transmission method applied in a base station according to an embodiment of the present invention;

fig. 4 is a schematic diagram of UE sending voice data by applying the data sending method provided in the embodiment of the present invention

Fig. 5 is a flowchart of a data transmission method applied in a UE according to an embodiment of the present invention;

fig. 6 is another flowchart of a data transmission method applied in a UE according to an embodiment of the present invention;

fig. 7 is a flowchart of a data transmission method applied to a UE according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a data transmitting apparatus applied in a base station according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a data transmitting apparatus applied in a base station according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a data transmitting apparatus applied in a UE according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a data transmitting apparatus applied in a UE according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of a data transmitting apparatus applied in a UE according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of a base station according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of a UE according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, a flowchart of a data transmission method according to an embodiment of the present invention is shown, where the flowchart is applied in a base station, and is used to reduce a probability of interference occurring between UEs when data is transmitted, where the method includes the following steps:

101: and detecting the uplink interference condition of the cell. It can be understood that: the uplink interference condition of the cell is the interference condition of data sent by other UEs when the UE located in the cell currently sends data. For example, when the UE transmits E-DCH data, the UE is interfered by DCH data transmitted by other UEs.

102: judging whether the uplink interference condition meets a preset interference range, if so, executing a step 103; if not, step 104 is performed.

In the embodiment of the invention, the preset interference range is the interference range received when the base station correctly receives the E-DCH data sent by the UE. In practical application, an interference upper limit for receiving data is set in the base station, and when the interference upper limit is exceeded, the base station cannot correctly receive the E-DCH data sent by the UE, so the preset interference range may be (0, a), where a is the interference upper limit for receiving data.

When the uplink interference condition meets the preset interference range, it indicates that the interference of the DCH data, which is received when the UE located in the cell sends the E-DCH data, has a large impact on the E-DCH data transmission, and at this time, the sending of the UE needs to be controlled to avoid the interference between UEs. And when the uplink interference condition does not meet the interference range, indicating that the transmission of the UE is not required to be controlled.

The uplink interference condition of the cell may be obtained by detecting total received power of the cell, where the total received power of the cell is a sum of received powers of all UEs located in the cell, and the received power of each UE may be obtained by detecting signal strength, and details of the embodiment of the present invention are not described herein.

Determining whether the uplink interference condition satisfies the preset interference range may include: judging whether the total receiving power of the cell is higher than a first preset threshold or not and whether the ratio of the receiving power of DCH data to the total receiving power is higher than a second preset threshold or not;

if the total received power of the cell is higher than a first preset threshold and the ratio of the received power of the DCH data to the total received power is higher than a second preset threshold, it indicates that the uplink interference condition meets the preset interference range, and continues to execute step 103; if the total received power of the cell is lower than the first preset threshold or the ratio of the received power of the DCH data to the total received power is lower than the second preset threshold, it indicates that the uplink interference condition does not satisfy the preset interference range, and step 104 is executed.

In the embodiment of the present invention, the first preset threshold and the second preset threshold have different values in different application scenarios, and if the number of UEs in the cell 1 is greater than the number of UEs in the cell 2, the first preset threshold in the cell 1 is higher than the first preset threshold in the cell 2, and correspondingly, the second preset threshold in the cell 1 is higher than the second preset threshold in the cell 2.

103: first control signaling is sent to instruct the UE to enter a time division multiplexing transmission mode.

The time division multiplexing transmission mode is used for indicating that DCH data is sent on an uplink carrier frequency in a time division mode so as to reduce the probability of interference when data is sent among a plurality of UE.

The time division mode is to divide an uplink carrier frequency into a plurality of subframes in time and set whether any subframe sends data, so that when the time division mode is set, other UE (user equipment) in the same cell can be set not to send data when any UE sends E-DCH (enhanced dedicated channel) data in the uplink carrier frequency, and other UE (user equipment) stops sending the DCH data when any UE sends the DCH data in the uplink carrier frequency, so that the probability of interference when the UE sends the data can be reduced, and the interference when the UE sends the data can be avoided.

One possible means for setting the time division mode in the time division multiplexing transmission mode is as follows: and a time division mode is preset between the base station and the UE, and the UE sends data such as E-DCH data, DCH data and the like by adopting the preset time division mode after receiving the first control signaling.

Another possible approach is: the base station sends a first control signaling and also sends a data transmission pattern, wherein the data transmission pattern is used for indicating the time division mode of sending DCH data by the UE. The time division mode can set whether the UE sends data in different subframes of the uplink carrier frequency, so that the probability of interference between the UE and DCH data when the UE sends the E-DCH data is reduced.

Taking the example that UE1 and UE2 send E-DCH data and DCH data, in the prior art, UE1 would send DCH data in all subframes of one uplink carrier frequency, and when UE1 sends DCH data, E-DCH data sent by UE2 would be interfered by DCH data sent by UE 1. In the embodiment of the present invention, the base station may send the first control signaling to make UE1 and UE2 enter a time division multiplexing transmission mode, instructing UE1 and UE2 to send DCH data and E-DCH data on different subframes, as shown in fig. 2. In fig. 2, when the UE1 transmits DCH data, the UE2 does not transmit E-DCH data, and when the UE1 does not transmit DCH data, the UE2 transmits E-DCH data, which can ensure that the E-DCH data is interfered by DCH data.

104: and sending second control signaling to instruct the UE to exit the time division multiplexing transmission mode. After the UE exits the time division multiplexing transmission mode, data other than E-DCH data is still transmitted in the manner specified in the prior art.

By applying the technical scheme, the base station can detect the uplink interference condition of the cell, judge whether the uplink interference condition meets the preset interference range or not, and send the first control signaling if the uplink interference condition meets the preset interference range. The first control signaling can instruct the UE to enter a time division multiplexing transmission mode, and the time division multiplexing transmission mode can instruct data other than DCH data to be sent in a time division manner on one uplink carrier frequency, so that any UE can send DCH data when other UEs do not send data based on the time division multiplexing transmission mode on the premise of not changing the existing network architecture. Similarly, based on the time division multiplexing transmission mode, when any UE sends E-DCH data, other UEs may not send data, thereby reducing the probability of sending interference when sending data between UEs.

Although the base station can reduce the interference to the E-DCH data when using the data transmission method shown in fig. 1, when the UE uses the time division multiplexing transmission mode, the number of subframes for the UE to transmit the DCH data is reduced compared to the prior art, which may result in the quality of the DCH data transmitted by the UE being reduced.

If the UE sends the uplink voice data in the DCH data by using the time division multiplexing transmission mode, the time division multiplexing transmission mode is used to instruct that the uplink voice data is sent on an uplink carrier frequency by using a time division manner, so as to reduce the probability that one UE sends the uplink voice data and interferes with other data sent by other UEs.

When the uplink voice data is transmitted in the time division multiplexing transmission mode, the amount of the uplink voice data transmitted in the same time period is reduced, so that the phenomenon that voice between the UE is intermittent occurs, and the voice data performance is reduced. Therefore, in order to solve the above problem, an embodiment of the present invention provides a data sending method as shown in fig. 3, which may further include, on the basis of fig. 1, the steps of:

105: and instructing the UE to reduce the spreading factor of the DCH data after entering the time division multiplexing transmission mode.

It can be understood that: the current spreading communication principle is that the total number of chips transmitted on a subframe is constant in a unit time, and a spreading factor n indicates that a symbol is transmitted by n chips, assuming that L is used. For example, a spreading factor of 128, meaning that 128 chips are used to transmit a symbol, the total number of symbols that can be transmitted per unit time of a subframe is L/128. If the spreading factor is reduced to 64, the number of symbols that can be transmitted per unit time of the subframe is changed to L/64, which is increased by 1 time, and accordingly, the time taken by the subframe to transmit the same amount of DCH data is also reduced by 1 time. Taking the SF128 reduced to SF64 as an example, the length of the sub-frame for originally transmitting DCH data is 20ms, the spreading factor is reduced by half, the DCH data with the same amount is transmitted, the time S is reduced to 10ms, and the time that can stop is 20-S =10ms, as shown in fig. 4, the time for transmitting DCH data by each sub-frame is half of the time for transmitting DCH data by the original sub-frame, so that the UE can also ensure the amount of DCH data to be transmitted to be unchanged by using the time division multiplexing transmission mode, and ensure the data performance.

After the spreading factor is reduced, the number of transmitted symbols is increased, so that under the condition that the total number of transmitted chips is not changed, the number of chips of each symbol is increased after the spreading factor is reduced, and the anti-interference capability of data is reduced, so that the transmission power of the UE can be improved and the anti-interference capability is improved while the spreading factor is reduced.

The transmission power of the UE in the time division multiplexing transmission mode is: the power offset value is multiplied by the transmission power in the normal transmission mode, so that the transmission power of the UE in the time division multiplexing transmission mode can be increased by setting the power offset value to a value greater than 1, where the normal transmission mode refers to a mode in which a subframe in the uplink carrier frequency transmits DCH data in the prior art, and whether or not the subframe in the uplink carrier frequency transmits data and the type of the data is not set in the normal transmission mode.

In summary, the data transmission method provided in the embodiment of the present invention reduces interference of E-DCH data, and simultaneously reduces spreading factors to ensure complete transmission of DCH data as much as possible, thereby improving data performance.

The points to be explained are: the data transmission method provided by the embodiment of the present invention is also applicable to uplink voice data in DCH data, and the corresponding time division multiplexing transmission mode is used to instruct that the uplink voice data is transmitted in a time division manner on one uplink carrier frequency, so that the uplink voice data transmitted by one UE is prevented from being interfered by other data transmitted by other UEs.

Referring to fig. 5, a flowchart of another data transmission method provided in an embodiment of the present invention is shown, which is applied in a UE for reducing a probability of interference occurring between UEs when data is transmitted, where the method may include the following steps:

501: and receiving a first control signaling sent by the base station, wherein the first control signaling indicates the UE to enter a time division multiplexing transmission mode.

In the embodiment of the present invention, the first control signaling is sent by the base station when detecting that the uplink interference condition of the cell satisfies the preset interference range, where the specific implementation manner of the base station for detecting the uplink interference condition and whether the uplink interference condition satisfies the preset interference range may refer to the data sending method shown in fig. 1, and details of the embodiment of the present invention are not described again.

502: and switching the transmission mode to a time division multiplexing transmission mode, wherein the time division multiplexing transmission mode is used for indicating that DCH data is sent on one uplink carrier frequency in a time division mode so as to reduce the interference when the data is sent among a plurality of UE. Such as reducing the probability of interference between DCH data transmitted by one UE and E-DCH data transmitted by other UEs.

The time division mode is to divide an uplink carrier frequency into a plurality of subframes in time and set whether any subframe sends data, so that when the subframe used by the UE in the cell is set, other UEs in the same cell can be set not to send data when any UE sends the E-DCH data in the uplink carrier frequency, and other UEs stop sending the E-DCH data when any UE sends the DCH data in the uplink carrier frequency, thereby reducing the probability of interference when the UE sends the data.

One possible means for setting the time division mode is as follows: and a time division mode is preset between the base station and the UE, and the UE sends data such as E-DCH data, DCH data and the like by adopting the preset time division mode after receiving the first control signaling.

Another possible approach is: the base station sends a first control signaling and also sends a data transmission pattern, wherein the data transmission pattern is used for indicating the time division mode of sending DCH data by the UE. After receiving the data transmission pattern, the UE may send DCH data in a time division manner indicated by the data transmission pattern, so as to avoid interference between the UE and the DCH data when sending E-DCH data.

503: in time division multiplex transmission mode, DCH data is transmitted. Taking the above fig. 2 as an example, it is explained that when the UE1 and the UE2 transmit E-DCH data and DCH data, the UE1 and the UE2 transmit DCH data in a time division manner based on a time division multiplexing transmission mode to reduce interference between data. Therefore, on the premise of not changing the existing network architecture, any UE can send E-DCH data when other UEs do not send DCH data based on the time division multiplexing transmission mode, interference suffered by the UE when the UE sends the E-DCH data is reduced, and the occurrence probability of the interference is reduced.

When the UE uses the time division multiplexing transmission mode, the number of subframes for the UE to transmit DCH data is reduced compared to the prior art, which may result in the quality of DCH data transmitted by the UE being reduced. Therefore, an embodiment of the present invention provides a data sending method as shown in fig. 6, and on the basis of fig. 5, the method further includes the following steps:

504: after switching to the time division multiplexing transmission mode, the spreading factor of the DCH data is reduced.

When the spreading factor is decreased, the number of chips used for transmitting a symbol is increased accordingly, for example, when the spreading factor is decreased from 128 to 64, the number of chips for transmitting a symbol is increased from L/128 to L/64 (L is the total number of chips transmitted on a subframe), that is, the number of symbols that can be transmitted per unit time of a subframe is increased by 1 time, and correspondingly, the time taken by the subframe is decreased by 1 time for transmitting the same amount of DCH data, so that the UE can transmit DCH data in a time division multiplexing transmission mode to ensure that the amount of data to be transmitted is unchanged, and ensure performance.

After the spreading factor is reduced, the number of transmitted symbols is increased, so that under the condition that the total number of transmitted chips is not changed, the number of chips of each symbol is increased after the spreading factor is reduced, the anti-interference capability of data is reduced, and the transmitting power of the UE can be improved while the spreading factor is reduced.

The transmission power of the UE in the time division multiplexing transmission mode is: the power offset value is multiplied by the transmission power in the conventional transmission mode, so that the transmission power of the UE in the time division multiplexing transmission mode can be increased by setting the power offset value to a value greater than 1, where the conventional transmission mode is a mode in which a subframe in an uplink carrier frequency transmits voice data in the prior art, and whether data is transmitted and the type of the data is transmitted in the subframe in the uplink carrier frequency is not set in the conventional transmission mode.

In addition, the above data transmission method applied to the UE may further include step 505: and receiving a second control signaling sent by the base station, and exiting the time division multiplexing transmission mode, as shown in fig. 7. Wherein the second control signaling indicates the UE to exit the time division multiplexing transmission mode.

The second control signaling is sent when the base station detects that the uplink interference condition of the cell does not meet the preset interference range, wherein one feasible judgment mode that the uplink interference condition of the cell does not meet the preset interference range is as follows:

and if the total receiving power of the cell is lower than the first preset threshold or the ratio of the receiving power of the DCH data to the total receiving power is lower than the second preset threshold, the uplink interference condition is not satisfied with the preset interference range, and the base station sends a second control signaling to indicate the UE to exit the time division multiplexing transmission mode. After the UE exits the time division multiplexing transmission mode, the DCH data is still transmitted according to the method specified in the prior art.

One point to be noted here is: the data transmission method provided by the embodiment of the present invention is also applicable to uplink voice data in DCH data, and the corresponding time division multiplexing transmission mode is used to instruct that the uplink voice data is transmitted in a time division manner on one uplink carrier frequency, so that the uplink voice data transmitted by one UE is prevented from being interfered by other data transmitted by other UEs.

Corresponding to the foregoing method embodiment, an embodiment of the present invention further provides a data transmitting apparatus applied in a base station, where a schematic structural diagram of the data transmitting apparatus is shown in fig. 8, and the data transmitting apparatus may include: a detection unit 11, a judgment unit 12 and a transmission unit 13. Wherein,

the detecting unit 11 is configured to detect an uplink interference situation of a cell. It can be understood that: the uplink interference condition of the cell is the interference condition of data sent by other UEs when the UE located in the cell currently sends data. For example, when the UE transmits E-DCH data, the UE is interfered by DCH data transmitted by other UEs.

The determining unit 12 is configured to determine whether the uplink interference condition meets a preset interference range, where the preset interference range is an interference range that a base station receives when correctly receiving E-DCH data sent by a UE.

In practical application, an interference upper limit for receiving data is set in the base station, and when the interference upper limit is exceeded, the base station cannot correctly receive the E-DCH data sent by the UE, so the preset interference range may be (0, a), where a is the interference upper limit for receiving data.

In this embodiment of the present invention, the detecting unit 11 may obtain the uplink interference condition of the cell by detecting the total received power of the cell, where the total received power of the cell is the sum of the received powers of all UEs located in the cell, and the received power of each UE may be obtained by detecting the signal strength, and details are not described in this embodiment of the present invention.

Correspondingly, the determining unit 12 determines whether the uplink interference condition satisfies the preset interference range, and then may include: judging whether the total receiving power of the cell is higher than a first preset threshold or not and whether the ratio of the receiving power of DCH data to the total receiving power is higher than a second preset threshold or not;

if the total receiving power of the cell is higher than a first preset threshold and the ratio of the receiving power of the DCH data to the total receiving power is higher than a second preset threshold, indicating that the uplink interference condition meets a preset interference range; and if the total receiving power of the cell is lower than a first preset threshold or the ratio of the receiving power of the DCH data to the total receiving power is lower than a second preset threshold, indicating that the uplink interference condition does not meet the preset interference range.

A sending unit 13, configured to send a first control signaling to instruct the UE to enter a time division multiplexing transmission mode when the determining unit 12 determines that the uplink interference condition satisfies the preset interference range, where the time division multiplexing transmission mode is used to instruct that DCH data is sent on one uplink carrier frequency in a time division manner, so as to reduce a probability that one UE sends DCH data and interferes with data sent by other UEs.

Another possible approach is: the sending unit 13 sends the first control signaling and also sends a data transmission pattern, where the data transmission pattern is used to instruct the UE to send the time division manner of DCH data. The time division mode can set whether the UE sends data in different subframes of the uplink carrier frequency, so that the probability of interference between the UE and DCH data when the UE sends the E-DCH data is reduced.

By applying the technical scheme, the data sending device in the base station can detect the uplink interference condition of the cell, judge whether the uplink interference condition meets the preset interference range or not, and send the first control signaling if the uplink interference condition meets the preset interference range. The first control signaling can instruct the UE to enter a time division multiplexing transmission mode, and the time division multiplexing transmission mode can instruct data other than DCH data to be sent in a time division manner on one uplink carrier frequency, so that any UE can send DCH data when other UEs do not send data based on the time division multiplexing transmission mode on the premise of not changing the existing network architecture. Similarly, based on the time division multiplexing transmission mode, when any UE sends E-DCH data, other UEs may not send data, thereby reducing the probability of sending interference when sending data between UEs.

Although the data sending device provided by the embodiment of the invention can reduce the interference to the E-DCH data, when the UE adopts a time division multiplexing transmission mode, the number of the sub-frames for sending the DCH data by the UE is reduced compared with the prior art, thereby causing the quality of the DCH data sent by the UE to be reduced.

If the UE sends the uplink voice data in the DCH data by adopting the time division multiplexing transmission mode, the time division multiplexing transmission mode is used for indicating that the uplink voice data is sent on an uplink carrier frequency in a time division mode so as to reduce the probability that one UE sends the uplink voice data and interferes with other data sent by other UEs

When the uplink voice data is transmitted in the time division multiplexing transmission mode, the amount of the uplink voice data transmitted in the same time period is reduced, so that the phenomenon that voice between the UE is intermittent occurs, and the voice data performance is reduced. Therefore, in order to solve the above problem, an embodiment of the present invention provides a data transmitting apparatus as shown in fig. 9, which further includes, on the basis of fig. 8: a first control unit 14. The first control unit 14 is configured to instruct the UE to decrease the spreading factor of the DCH data after entering the time division multiplexing transmission mode.

Since the number of transmitted symbols increases after the spreading factor is reduced, the number of chips of each symbol increases after the spreading factor is reduced under the condition that the total number of transmitted chips is not changed, so that the interference resistance of data is reduced, and therefore, in the embodiment of the present invention, the first control unit 14 can also improve the transmission power of the UE and improve the interference resistance while reducing the spreading factor.

The points to be explained are: the data transmission method provided by the embodiment of the present invention is also applicable to uplink voice data in DCH data, and the corresponding time division multiplexing transmission mode is used to instruct that uplink voice data is transmitted in a time division manner on one uplink carrier frequency, so that interference of the uplink voice data transmitted by one UE with other data transmitted by other UEs can be reduced.

The data sending apparatus shown in fig. 8 or 9 provided in the embodiment of the present invention may be included in a base station, and the base station may instruct, through the data sending apparatus, the UE to enter a time division multiplexing transmission mode, so that the UE may send DCH data on one uplink carrier frequency in a time division manner by using the time division multiplexing transmission mode, thereby reducing the probability of interference occurring when sending data among multiple UEs.

An embodiment of the present invention further provides a data sending apparatus applied in a UE, and a schematic structural diagram of the data sending apparatus is shown in fig. 10, where the data sending apparatus may include: a receiving unit 21, a switching unit 22 and a transmitting unit 23. Wherein,

a receiving unit 21, configured to receive a first control signaling sent by a base station, where the first control signaling indicates that a UE enters a time division multiplexing transmission mode.

The switching unit 22 is configured to switch the transmission mode to a time division multiplexing transmission mode, where the time division multiplexing transmission mode is used to instruct that DCH data is sent on an uplink carrier frequency in a time division manner, so as to reduce the probability that one UE sends DCH data and interferes with data sent by other UEs. Such as reducing the probability of interference between DCH data transmitted by one UE and E-DCH data transmitted by other UEs.

Another possible approach is: the receiving unit 21 receives a data transmission pattern while receiving the first control signaling, where the data transmission pattern is sent by the base station and is used to instruct the UE to send the time division manner of DCH data. After receiving the data transmission pattern, the UE may send DCH data in a time division manner indicated by the data transmission pattern, so as to avoid interference between the UE and the DCH data when sending E-DCH data.

A sending unit 23, configured to send DCH data in a time division multiplexing transmission mode. As shown in fig. 2, the UE1 and the UE2 transmit DCH data in a time division manner based on a time division multiplexing transmission mode to reduce interference between data. Therefore, on the premise of not changing the existing network architecture, any UE can send E-DCH data when other UEs do not send DCH data based on the time division multiplexing transmission mode, interference suffered by the UE when the UE sends the E-DCH data is reduced, and the occurrence probability of the interference is reduced.

When the UE uses the time division multiplexing transmission mode, the number of subframes for the UE to transmit DCH data is reduced compared to the prior art, which may result in the quality of DCH data transmitted by the UE being reduced. Therefore, an embodiment of the present invention provides a data transmitting apparatus as shown in fig. 11, and on the basis of fig. 10, the data transmitting apparatus may further include: a second control unit 24. Wherein, the second control unit 24 is configured to reduce the spreading factor of the DCH data after switching to the time division multiplexing transmission mode.

Since the number of transmitted symbols increases after the spreading factor is reduced, the number of chips of each symbol increases after the spreading factor is reduced under the condition that the total number of transmitted chips is not changed, so that the interference resistance of data is reduced, and therefore, the second control unit 24 can also improve the transmission power of the UE while reducing the spreading factor.

To sum up, the data transmitting apparatus provided in the embodiment of the present invention reduces interference of E-DCH data, and simultaneously reduces spreading factors to ensure complete transmission of DCH data as much as possible, thereby improving data performance.

Referring to fig. 12, which shows a schematic structural diagram of a data sending apparatus according to another embodiment of the present invention, on the basis of fig. 10, the data sending apparatus may further include: a third controlling unit 25, configured to control the UE to exit the time division multiplexing transmission mode after the receiving unit 21 receives the second control signaling.

Of course, the third control unit 25 may also be included in the data transmission apparatus shown in fig. 11, and when the complete transmission of the data is achieved, the switching of the time division multiplexing transmission mode may also be controlled, that is, when the UE enters the time division multiplexing transmission mode and when the UE exits the time division multiplexing transmission mode is controlled.

Any one of the data sending apparatuses shown in fig. 10 to 12 provided in the embodiments of the present invention may be included in the UE, and the UE may send DCH data on one uplink carrier frequency in a time division manner by using a time division multiplexing transmission mode through the data sending apparatus, so as to reduce the probability of interference occurring when sending data among multiple UEs.

Referring to fig. 13, which shows a schematic structural diagram of a base station provided in an embodiment of the present invention, the base station 600 may include a Central Processing Unit (CPU) 601 and a memory 602 in hardware. The CPU601 may execute at least the following steps by running the software program 603 stored in the memory 602 and calling the data stored in the memory 602:

detecting the uplink interference condition of a cell;

if so, sending a first control signaling to indicate the user equipment to enter a time division multiplexing transmission mode, wherein the time division multiplexing transmission mode is used for indicating that the DCH data is sent on an uplink carrier frequency in a time division mode, so that the probability that one user equipment sends the DCH data and interferes with data sent by other user equipment is reduced.

The detailed implementation of the above steps is described in the method, and will not be described herein.

In an embodiment of the present invention, the Memory 602 may specifically be a DDR SDRAM (Double data rate SDRAM, Double data rate synchronous dynamic random access Memory), an SRAM (Static RAM, Static random access Memory), a FLASH Memory (FLASH Memory), an SSD (Solid State Disk), and the like, and mainly includes a program storage area and a data storage area, where the program storage area may store an operating system, and at least one application program (for example, the software program 603) required by a function; the data storage area can store data finally generated according to the execution condition of the CPU, and intermediate data generated when the CPU executes the steps are stored in the memory. The CPU601 and the memory 602 may be integrated in the same chip or may be two separate devices.

Referring to fig. 14, which shows a schematic structural diagram of a UE provided in an embodiment of the present invention, a base station 700 may include a CPU701 and a memory 702 in hardware. The CPU701 may execute at least the following steps by running the software program 703 stored in the memory 702 and calling the data stored in the memory 702:

In an embodiment of the present invention, the Memory 702 may specifically be a DDR SDRAM (Double data rate SDRAM, Double data rate synchronous dynamic random access Memory), an SRAM (Static RAM, Static random access Memory), a FLASH Memory (FLASH Memory), an SSD (Solid State Disk), and the like, and mainly includes a program storage area and a data storage area, where the program storage area may store an operating system, and at least one application program (for example, the software program 703) required by a function; the data storage area can store data finally generated according to the execution condition of the CPU, and intermediate data generated when the CPU executes the steps are stored in the memory. The CPU701 and the memory 702 may be integrated in the same chip or may be separate devices.

It should be noted that: the embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. As for the method embodiment, since it is basically similar to the apparatus embodiment, the description is simple, and the relevant points can be referred to the partial description of the apparatus embodiment.

Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A data transmission method is applied to a base station, and is characterized by comprising the following steps:

detecting the uplink interference condition of a cell;

2. The method according to claim 1, wherein a data transmission pattern is transmitted simultaneously with the first control signaling, and the data transmission pattern is used for indicating a time division manner for the UE to transmit DCH data.

3. The method of claim 1, further comprising: instructing the user equipment to reduce the spreading factor of the DCH data after entering the time division multiplexing transmission mode;

4. The method according to any one of claims 1 to 3, wherein the detecting the uplink interference situation of the cell comprises: and detecting the total receiving power of the cell, wherein the total receiving rate of the cell is used for indicating the uplink interference condition of the cell.

5. The method of claim 4, wherein determining whether the uplink interference condition meets a preset interference range comprises: judging whether the total receiving power of the cell is higher than a first preset threshold or not, and whether the ratio of the receiving power of the DCH data to the total receiving power is higher than a second preset threshold or not;

6. The method according to claim 5, wherein if the total received power of the cell is lower than a first preset threshold or the ratio of the received power of the DCH data to the total received power is lower than a second preset threshold, it indicates that the uplink interference condition does not satisfy a preset interference range;

7. The method according to claim 5, wherein the method is applied to uplink voice data in DCH data, and the time division multiplexing transmission mode is used to instruct that the uplink voice data is sent in a time division manner on one uplink carrier frequency, so as to reduce the probability that one ue sends the uplink voice data and interferes with other data sent by other ues.

8. A data transmission method is applied to user equipment, and is characterized by comprising the following steps:

9. The method of claim 8, wherein a data transmission pattern is received while receiving the first control signaling;

10. The method of claim 8, further comprising: after switching to the time division multiplexing transmission mode, reducing the spreading factor of the DCH data;

11. The method of claim 8, further comprising:

exiting the time division multiplexing transmission mode.

12. The method according to any of claims 8 to 11, wherein the method is applied to uplink voice data in the DCH data, and the time division multiplexing transmission mode is used to instruct that the uplink voice data is sent in a time division manner on one uplink carrier frequency, so as to reduce the probability that one ue sends the uplink voice data to interfere with other data sent by other ues.

13. A data transmission apparatus applied to a base station, the apparatus comprising:

14. The apparatus of claim 13, wherein the sending unit sends a data transmission pattern at the same time as the first control signaling, and wherein the data transmission pattern is used for indicating a time division manner for the ue to send DCH data.

15. The apparatus of claim 13, further comprising: a first control unit;

16. The apparatus according to any one of claims 13 to 15, wherein the detecting unit detects the uplink interference situation of the cell, and includes: and detecting the total receiving power of the cell, wherein the total receiving rate of the cell is used for indicating the uplink interference condition of the cell.

17. The apparatus of claim 16, wherein the determining unit determines whether the uplink interference condition satisfies a preset interference range, and includes: judging whether the total receiving power of the cell is higher than a first preset threshold or not, and whether the ratio of the receiving power of the DCH data to the total receiving power is higher than a second preset threshold or not;

18. The apparatus of claim 17, wherein the sending unit is further configured to send a second control signaling to instruct the ue to exit the tdm transmission mode if a total received power of the cell is lower than a first preset threshold or a ratio of the received power of the DCH data to the total received power is lower than a second preset threshold, which indicates that the uplink interference condition does not satisfy a preset interference range.

19. The apparatus according to claim 17, wherein the apparatus is adapted to uplink voice data in DCH data, and the time division multiplexing transmission mode is used to instruct that the uplink voice data is sent in a time division manner on one uplink carrier frequency, so as to reduce a probability that one ue sends the uplink voice data and interferes with other data sent by other ues.

20. A base station, characterized in that it comprises a data transmission device according to any one of claims 14 to 19.

21. A data transmission apparatus, applied to a user equipment, the apparatus comprising:

22. The apparatus of claim 21, wherein the receiving unit receives a data transmission pattern while receiving the first control signaling;

23. The apparatus of claim 21, further comprising: a second control unit;

24. The apparatus of claim 21, wherein the receiving unit is further configured to receive a second control signaling sent by a base station, and the second control signaling indicates that the ue exits from the time division multiplexing transmission mode;

25. The apparatus according to any of claims 21 to 24, wherein the apparatus is adapted to apply uplink voice data in the DCH data, and the time division multiplexing transmission mode is used to instruct that the uplink voice data is sent in a time division manner on one uplink carrier frequency, so as to reduce a probability that one ue sends the uplink voice data to interfere with other data sent by other ues.

26. A user equipment comprising a data transmission device according to any one of claims 21 to 25.