CN102959888A - Method and apparatus for implementing uplink data transmission - Google Patents
Method and apparatus for implementing uplink data transmission Download PDFInfo
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- CN102959888A CN102959888A CN2011800010370A CN201180001037A CN102959888A CN 102959888 A CN102959888 A CN 102959888A CN 2011800010370 A CN2011800010370 A CN 2011800010370A CN 201180001037 A CN201180001037 A CN 201180001037A CN 102959888 A CN102959888 A CN 102959888A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
Abstract
A method and apparatus for implementing uplink data transmission are provided. The method includes the following steps: receiving a current uplink scheduling request sent by a terminal; when the current uplink schedule is performed according to the preset scheduling policy, judging whether the system bit error rate (BER) is less than the preset minimum BER value; if so, decreasing the number of the resource blocks (RB) which are currently being uplink scheduled and/or reducing the value of modulation and coding scheme (MCS), in order that the system BER is not less than the preset minimum BER value; if not, performing the current uplink schedule according to the preset scheduling policy. According to the embodiments of the present application, the demodulation performance of a communication system can be improved.
Description
Technical field
The present invention relates to wireless communication technology field, particularly relate to a kind of method and apparatus of realizing that upstream data sends.
Background technology
In LTE (Long Term Evolution, Long Term Evolution) cellular system, the transmitting power that terminal adopts when sending different upstream datas also can be different.For example, when the upstream data of terminal transmission is business datum, the base station is according to demand and the current available band resource of current business, by distributing PUSCH (Physical Uplink Shared Channel, Physical Uplink Shared Channel) upper a certain number of RB (Resource Block, Resource Block) be the terminal distribution band resource, terminal sends uplink business data according to the band resource of base station assigns again.Usually, the transmitting power when terminal is carried out the PUSCH uplink scheduling is higher, generally more than 10dBm.As terminal feedback ACK (ACKnowledge, positive acknowledgement), NACK (Negative acknowledgement, Negative Acknowledgement), CQI (Channel Quality Indicator, channel quality is indicated) or SRI (Scheduling Request Indicator, dispatch request indication) signaling such as, and when not having again the PUSCH band resource to utilize, the base station is by distributing PUCCH (Physical Uplink Control Channel, Physical Uplink Control Channel) upper a certain number of RB and be the terminal distribution band resource, terminal is again according to the band resource feedback control signaling that distributes.Usually, the transmitting power when terminal is carried out the PUCCH uplink scheduling is lower, greatly below 0dBm.Transmitting power when in addition, the transmitting power of terminal when carrying out SRS (Sounding Reference Signal, Sounding Reference Signal) uplink scheduling is usually than execution PUSCH uplink scheduling is low.
Usually, because the difference of Poewr control method, the difference of transmitting power, the perhaps equal reason of the blanking time of uplink scheduling, terminal often needs transmitting power is undergone mutation at short notice when sending upstream data. signals.For example, if terminal is at a TTI (Transmission Time Interval, Transmission Time Interval) carries out the PUCCH uplink scheduling in, in back to back TTI, carry out the PUSCH scheduling, as shown in Figure 1, the schematic diagram that it is undergone mutation for terminal transmit power, because the transmitting power of terminal when carrying out the PUCCH uplink scheduling is lower, and the transmitting power when carrying out the PUSCH uplink scheduling is higher, therefore, as shown in Figure 1, sudden change has occured in the transmitting power of terminal in first TTI and second TTI.
For most terminals, owing to being subject to the little restriction of volume, cause the performance of power control unit of terminal lower.In the process that sends upstream data, when the transmitting power that requires terminal when sudden change shown in Figure 1 occurs in the agreement in setting time, because the restriction of self, the power control unit of terminal often can't realize sudden change at the agreement in setting time with transmitting power.Can't be with transmitting power when the agreement in setting time be realized sudden change when power control unit, upstream data. signals is with distorted.
And if distortion has occured upstream data. signals, when the base station received the upstream data. signals of distorted, also normal this upstream data. signals of demodulation just also can produce the demodulation mistake thus, and then, affected the demodulation performance of communication system.
In addition, Fig. 1 only is a kind of schematic diagram, and actual in the regulation in the agreement, terminal can just not recovered transmitting power in the so long time at 2 TTI, generally can recover in a TTI, also can cause the distortion of signal, this distortion is enough to cause the decline of demodulation performance.
Summary of the invention
In order to solve the problems of the technologies described above, the embodiment of the invention provides a kind of method and apparatus of realizing that upstream data sends, to improve the demodulation performance of communication system.
The embodiment of the invention discloses following technical scheme:
A kind of method that realizes that upstream data sends comprises:
The current uplink scheduling request that receiving terminal sends;
When carrying out current uplink scheduling according to the scheduling strategy that presets, judge that whether the error rate of system is less than the error rate minimum value that presets;
If so, reduce the Resource Block RB quantity of current uplink scheduling and/or reduce modulation coding mode MCS value, make the error rate of system be not less than the error rate minimum value that presets, otherwise, current uplink scheduling carried out according to the described scheduling strategy that presets.
A kind of device of realizing that upstream data sends comprises:
Receiving element is used for the uplink scheduling request that receiving terminal sends;
The demodulation performance judging unit is used for judging that whether the error rate of system is less than the error rate minimum value that presets when carrying out current uplink scheduling according to the scheduling strategy that presets;
The first time-frequency resource distributing unit, be used for when the judged result of described demodulation performance judging unit when being, reduce the RB quantity of current uplink scheduling and/or reduce the MCS value, make the error rate of system be not less than the error rate minimum value that presets, otherwise, carry out current uplink scheduling according to the described scheduling strategy that presets.
As can be seen from the above-described embodiment, when carrying out current uplink scheduling according to the scheduling strategy that presets, the error rate of system is during less than the error rate minimum value that presets, namely, when the demodulation performance of system can't meet the demands, by the RB quantity that reduces current uplink scheduling or the MCS value that reduces current uplink scheduling, perhaps the mode of both combinations was adjusted, make the error rate of system be not less than the error rate minimum value that presets, thereby can improve the demodulation performance of whole system.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic diagram that terminal transmit power is undergone mutation;
Fig. 2 is a kind of flow chart of realizing an embodiment of the method that upstream data sends of the application;
Fig. 3 is a kind of flow chart of realizing another embodiment of the method that upstream data sends of the application;
Fig. 4 is a kind of flow chart of realizing another embodiment of the method that upstream data sends of the application;
Fig. 5 is a kind of flow chart of realizing another embodiment of the method that upstream data sends of the application;
Fig. 6 is a kind of structural representation of realizing an embodiment of the device that upstream data sends of the application;
Fig. 7 is a structural representation of demodulation performance judging unit among embodiment of the application;
Fig. 8 is the structural representation of demodulation performance judging unit among another embodiment of the application;
Fig. 9 is the structural representation of demodulation performance judging unit among another embodiment of the application;
Figure 10 is the structural representation of demodulation performance judging unit among embodiment of the application;
Figure 11 is the structural representation of realizing the device that upstream data sends among another embodiment of the application.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with accompanying drawing the embodiment of the invention is described in detail.
Embodiment one
See also Fig. 2, it realizes the flow chart of an embodiment of the method that upstream data sends for the application is a kind of.The method may further comprise the steps:
Step 201: the current uplink scheduling request that receiving terminal sends;
For example, before terminal sends upstream data, need to send to the base station uplink scheduling request, to obtain base station assigns to running time-frequency resource terminal, that be used for sending upstream data.
Step 202: when carrying out current uplink scheduling according to the scheduling strategy that presets, whether the error rate of judging system during less than the error rate minimum value that presets, if so, enters step 203, otherwise, enter step 204;
Need to prove, the embodiment of the present application is which type of mode is not specifically limited to the scheduling strategy itself that presets, can adopt any scheduling strategy of the prior art to carry out current uplink scheduling, perhaps, also can adopt any scheduling strategy that prior art has been improved to carry out current uplink scheduling.
Step 203: reduce the Resource Block RB quantity of current uplink scheduling and/or reduce modulation coding mode MCS value, make the error rate of system be not less than the error rate minimum value that presets, then process ends.
For fear of the sudden change of the transmitting power impact on upstream data. signals, the base station is judged first if carry out current uplink scheduling according to the scheduling strategy that presets, whether the error rate of system is less than the error rate minimum value that presets, if, illustrate if carry out current uplink scheduling according to the scheduling strategy that presets, can't satisfy system to the requirement of demodulation performance, therefore, can reduce the RB quantity of current uplink scheduling or reduce the MCS value, with this error rate that improves system, make the error rate of system be not less than the error rate minimum value that presets.Perhaps, also can reduce simultaneously the RB quantity of current uplink scheduling and lower the MCS value, finally make the error rate of system be not less than the error rate minimum value that presets.When the error rate of system bring up to be not less than the error rate minimum value that presets after, the demodulation performance of system also just improves thereupon, thereby has avoided distortion and problem that the demodulation performance that brings descends.
For example, in a system, when the power of adjacent twice uplink scheduling changes size (power of the power of current uplink scheduling and the previous scheduling of current uplink scheduling) when determining, can be by the mode of test, according to the RB quantity of uplink scheduling and the signal to noise ratio of MSC value computing system, and further determined the error rate of system by the signal to noise ratio of system, the MSC value is fixing, constantly adjust the RB quantity of current uplink scheduling, corresponding RB number is the RB quantity that meets the demands when making the error rate of system be not less than the error rate minimum value that presets.Equally, also can be by the mode of test, according to the RB quantity of uplink scheduling and the signal to noise ratio of MCS value computing system, and further determined the error rate of system by the signal to noise ratio of system, the RB number of uplink scheduling is fixed, constantly adjust the MCS value of current uplink scheduling, corresponding MCS value was the MCS value that meets the demands when the error rate of system was not less than the error rate minimum value that presets.Certainly, can also adjust simultaneously RB quantity and the MCS value of current uplink scheduling by the mode of test, corresponding RB number and MCS value were RB quantity and the MCS value that meets the demands when the error rate of system was not less than the error rate minimum value that presets.
Need to prove, the embodiment of the present application does not limit the concrete numerical value of the error rate minimum value that presets, can arrange arbitrarily the specific requirement of the demodulation performance of system according to the user.For example, when the user has relatively high expectations to the demodulation performance of system, a higher error rate minimum value can be set, when the user is low to the demodulation performance requirement of system, a lower error rate minimum value can be set.
Step 204: carry out current uplink scheduling, process ends according to the described scheduling strategy that presets.
If carry out current uplink scheduling according to the scheduling strategy that presets, the error rate of system is not less than the error rate minimum value that presets, illustrate if carry out current uplink scheduling according to the scheduling strategy that presets, can satisfy system to the requirement of demodulation performance, therefore, directly carry out current uplink scheduling according to the scheduling strategy that presets.
As can be seen from the above-described embodiment, when carrying out current uplink scheduling according to the scheduling strategy that presets, the error rate of system is during less than the error rate minimum value that presets, namely, when the demodulation performance of system can't meet the demands, by the RB quantity that reduces current uplink scheduling or the MCS value that reduces current uplink scheduling, perhaps the mode of both combinations was adjusted, make the error rate of system be not less than the error rate minimum value that presets, thereby can improve the demodulation performance of whole system.
Embodiment two
The difference of the present embodiment and embodiment one is, whether the error rate to system has carried out further restriction less than the deterministic process of the error rate minimum value that presets, when the scheduling type by adjacent twice uplink scheduling of identification, and the uplink scheduling that identifies adjacent twice execution of terminal is respectively PUCCH scheduling and PUSCH when dispatching, the transmitting power that terminal is described might need to produce at short notice sudden change, for example, rise or descend suddenly suddenly, if terminal is because self performance can't make transmitting power realize sudden change, can cause the upstream data. signals distorted, and then affect the demodulation performance of system.And then whether the error rate that needs to judge system knows whether distorted of upstream data. signals less than the error rate minimum value that presets.See also Fig. 3, it realizes another embodiment of the method that upstream data sends for the application is a kind of flow chart may further comprise the steps:
Step 301: the uplink scheduling request that receiving terminal sends;
Step 302: the scheduling type of identifying the previous scheduling of current uplink scheduling and current uplink scheduling;
Particularly, if current upstream data needs the base station that terminal is carried out the PUSCH scheduling, then the type of the previous scheduling of current uplink scheduling is further inquired about in the base station, here, the base station can be after being the terminal distribution uplink time/frequency source each time, record is also preserved the channel type of uplink scheduling each time and shared RB (Resource Block, the Resource Block) number of uplink scheduling each time.Like this, the channel type of the previous scheduling of current uplink scheduling can be known by the record that inquiry is preserved in the base station.When the base station knows that by inquiry the previous uplink scheduling of current uplink scheduling is the PUCCH scheduling, because the transmitting power when terminal is carried out the PUCCH scheduling is lower, and the transmitting power when carrying out the PUSCH scheduling is higher, therefore, by above-mentioned judgement, the base station just can know that terminal transmitting power when sending upstream data. signals can undergo mutation at short notice, and this sudden change may make the upstream data. signals distorted, and then affects the demodulation performance of system.
Step 303: if current uplink scheduling is the PUSCH scheduling, and the previous PUCCH of the being scheduling to scheduling of current uplink scheduling is when carrying out current uplink scheduling according to the scheduling strategy that presets, judge that whether the error rate of system is less than the error rate minimum value that presets, if, enter step 304, otherwise, enter step 305;
Wherein, can referring to the mode of step 202 among the embodiment one, make the base station obtain the type of adjacent twice uplink scheduling.Owing in embodiment one, describing in detail, so locate to repeat no more.
Step 304: reduce the RB quantity of current uplink scheduling and/or reduce the MCS value, make the error rate of system be not less than the error rate minimum value that presets;
For fear of the sudden change of the transmitting power impact on upstream data. signals, the base station is judged first if carry out current uplink scheduling according to the scheduling strategy that presets, whether the error rate of system is less than the error rate minimum value that presets, if, illustrate if carry out current uplink scheduling according to the scheduling strategy that presets, can't satisfy system to the requirement of demodulation performance, therefore, can reduce the RB quantity of current uplink scheduling or reduce the MCS value, with this error rate that improves system, make the error rate of system be not less than the error rate minimum value that presets.Also can reduce simultaneously the RB quantity of current uplink scheduling and lower the MCS value, finally make the error rate of system be not less than the error rate minimum value that presets.
For example, in a system, when the power of signal to noise ratio and adjacent twice uplink scheduling changes size (power of the power of current uplink scheduling and the previous scheduling of current uplink scheduling) when determining, can be by the mode of test, constantly adjust the RB quantity of current uplink scheduling, corresponding RB number was the RB quantity that meets the demands when the error rate of system was not less than the error rate minimum value that presets.Equally, also can constantly adjust the MCS value of current uplink scheduling by the mode of test, corresponding MCS value was the MCS value that meets the demands when the error rate of system was not less than the error rate minimum value that presets.Certainly, can also adjust simultaneously RB quantity and the MCS value of current uplink scheduling by the mode of test, corresponding RB number and MCS value were RB quantity and the MCS value that meets the demands when the error rate of system was not less than the error rate minimum value that presets.
Need to prove, the embodiment of the present application does not limit the concrete numerical value of error rate minimum value, can arrange arbitrarily the specific requirement of the demodulation performance of system according to the user.For example, when the user has relatively high expectations to the demodulation performance of system, a higher error rate minimum value can be set, when the user is low to the demodulation performance requirement of system, a lower error rate minimum value can be set.
Concrete, when adjacent twice uplink scheduling all is the PUSCH scheduling, calculate the RB number RB of current uplink scheduling demand
PreDistribute to the RB number RB of terminal with a front uplink scheduling
LastBetween difference (RB
Pre-RB
Last) and ratio
The present embodiment will according to this difference and ratio, be divided into four numerical value intervals:
Numerical value interval one: when described difference greater than RB
Diff, and described ratio is when being greater than or equal to N, and the RB quantity of current uplink scheduling is reduced to RB
1Number, RB
1=min (RB
Last+ RB
Diff, RB
Last* m), RB
LastBe the RB quantity of the previous scheduling of current scheduling, RB
DiffBe the maximum difference between the RB quantity of the RB quantity of current uplink scheduling and previous scheduling, N is greater than or equal to 4, min () for getting minimum value function.
Numerical value interval two: when described difference less than RB
Diff, and described ratio is during less than N, and the RB quantity of current uplink scheduling is reduced to RB
2Number, RB
2=RB
Last+ RB
Diff, RB
LastBe the RB quantity of the previous scheduling of current scheduling, RB
DiffBe the maximum difference between the RB quantity of the RB quantity of current uplink scheduling and previous scheduling, N is greater than or equal to 4.
Numerical value interval three: when described difference is less than or equal to RB
Diff, and described ratio is when being greater than or equal to N, and the RB quantity of current uplink scheduling is eased down to RB
3Number, RB
3=RB
Last* 2, RB
LastBe the RB quantity of the previous scheduling of current scheduling, RB
DiffBe the maximum difference between the RB quantity of the RB quantity of current uplink scheduling and previous scheduling, N is greater than or equal to 4.
Numerical value interval four: when described difference is less than or equal to RB
Diff, and described ratio is carried out current uplink scheduling, RB according to the scheduling strategy that presets during less than N
DiffBe the maximum difference between the RB quantity of the RB quantity of current uplink scheduling and previous scheduling, N is greater than or equal to 4.
Need to prove, the span of N is to be greater than or equal to an interval of 4.And for the process of transmitting of upstream data each time, N is a definite numerical value in this interval.
Step 305: carry out current uplink scheduling according to the described scheduling strategy that presets.
Need to prove, the embodiment of the present application is not specifically limited the scheduling strategy that presets, and can adopt any scheduling strategy of the prior art to carry out current uplink scheduling.
As a kind of optional mode, in step 302, be PUCCH scheduling or SRS scheduling if identify current uplink scheduling, then direct execution in step 305 is namely carried out current uplink scheduling according to the described scheduling strategy that presets.
As can be seen from the above-described embodiment, if be respectively PUCCH scheduling and PUSCH scheduling before and after adjacent twice uplink scheduling, PUSCH after carrying out according to the scheduling strategy that presets, the error rate of system is during less than the error rate minimum value that presets, namely, when the demodulation performance of system can't meet the demands, by the RB quantity that reduces a rear PUSCH or the MCS value that reduces rear PUSCH scheduling, perhaps the mode of both combinations is adjusted, make the error rate of system be not less than the error rate minimum value that presets, thereby can improve the demodulation performance of whole system.
Embodiment three
The difference of the present embodiment and embodiment one is, whether the error rate to system has carried out further restriction less than the deterministic process of the error rate minimum value that presets, when the scheduling type by adjacent twice uplink scheduling of identification, and the uplink scheduling that identifies adjacent twice execution of terminal all is PUSCH when scheduling, the transmitting power that terminal is described might need to produce at short notice sudden change, for example, rise or descend suddenly suddenly, if terminal is because self performance can't make transmitting power realize sudden change, can cause the upstream data. signals distorted, and then affect the demodulation performance of system.And then whether the error rate that needs to judge system knows whether distorted of upstream data. signals less than the error rate minimum value that presets.
See also Fig. 4, it realizes another embodiment of the method that upstream data sends for the application is a kind of flow chart may further comprise the steps:
Step 401: the current uplink scheduling request that receiving terminal sends;
Step 402: the scheduling type of identifying the previous scheduling of current uplink scheduling and current uplink scheduling;
Step 403: if current uplink scheduling is the PUSCH scheduling, and the previous PUSCH that is scheduling to of current uplink scheduling dispatches, when carrying out current uplink scheduling according to the scheduling strategy that presets, judge that whether the error rate of system is less than the error rate minimum value that presets, if, enter step 404, otherwise, step 405 entered;
In addition, except all being the judgement action of PUSCH when scheduling execution in step 403 in the previous scheduling that identifies current uplink scheduling and current uplink scheduling, can also be PUSCH scheduling identifying current uplink scheduling, the judgement action of execution in step 403 when current uplink scheduling previous is scheduling to the SRS scheduling.
Step 404: reduce the RB quantity of current uplink scheduling and/or reduce the MCS value, make the error rate of system be not less than the error rate minimum value that presets, process ends;
For fear of the sudden change of the transmitting power impact on upstream data. signals, the base station is judged first if carry out current uplink scheduling according to the scheduling strategy that presets, whether the error rate of system is less than the error rate minimum value that presets, if, illustrate if carry out current uplink scheduling according to the scheduling strategy that presets, can't satisfy system to the requirement of demodulation performance, therefore, can reduce the RB quantity of current uplink scheduling or reduce the MCS value, with this error rate that improves system, make the error rate of system be not less than the error rate minimum value that presets.Perhaps, also can reduce simultaneously the RB quantity of current uplink scheduling and lower the MCS value, finally make the error rate of system be not less than the error rate minimum value that presets.When the error rate of system bring up to be not less than the error rate minimum value that presets after, the demodulation performance of system also just improves thereupon, thereby has avoided distortion and problem that the demodulation performance that brings descends.
Can reduce according to the mode of step 203 among the embodiment one RB quantity or reduce the MCS value, repeat no more herein.
Need to prove, the embodiment of the present application does not limit the concrete numerical value of error rate minimum value, can arrange arbitrarily the specific requirement of the demodulation performance of system according to the user.For example, when the user has relatively high expectations to the demodulation performance of system, a higher error rate minimum value can be set, when the user is low to the demodulation performance requirement of system, a lower error rate minimum value can be set.
Step 405: carry out current uplink scheduling, process ends according to the described scheduling strategy that presets.
Need to prove, the embodiment of the present application is not specifically limited the scheduling strategy that presets, and can adopt any scheduling strategy of the prior art to carry out current uplink scheduling.
As a kind of optional mode, in step 402, be PUCCH scheduling or SRS scheduling if identify current uplink scheduling, then direct execution in step 405 is namely carried out current uplink scheduling according to the scheduling strategy that presets.
As can be seen from the above-described embodiment, if the previous scheduling of current uplink scheduling and current uplink scheduling all is the PUSCH scheduling, when carrying out current uplink scheduling according to the scheduling strategy that presets, the error rate of system is during less than the error rate minimum value that presets, namely, when the demodulation performance of system can't meet the demands, by the RB quantity that reduces current uplink scheduling or the MCS value that reduces current uplink scheduling, perhaps the mode of both combinations is adjusted, make the error rate of system be not less than the error rate minimum value that presets, thereby can improve the demodulation performance of whole system.
Embodiment four
The difference of the present embodiment and embodiment one is, whether the error rate to system has carried out further restriction less than the deterministic process of the error rate minimum value that presets, when the scheduling type by the current uplink scheduling of identification, and identify terminal when current uplink scheduling comprises PUSCH scheduling and SRS scheduling simultaneously, that is to say, current uplink scheduling not only uses the PUSCH scheduling type but also use the SRS scheduling type, the transmitting power that terminal is described might need to produce at short notice sudden change, for example, rise or descend suddenly suddenly, if terminal is because self performance can't make transmitting power realize sudden change, can cause the upstream data. signals distorted, and then affect the demodulation performance of system.And then whether the error rate that needs to judge system knows whether distorted of upstream data. signals less than the error rate minimum value that presets.See also Fig. 5, it realizes another embodiment of the method that upstream data sends for the application is a kind of flow chart may further comprise the steps:
Step 501: the uplink scheduling request that receiving terminal sends;
Step 502: the scheduling type of identifying current uplink scheduling;
Step 503: if current uplink scheduling comprises PUSCH scheduling and SRS scheduling simultaneously, when carrying out current uplink scheduling according to the scheduling strategy that presets, judge that whether the error rate of system is less than the error rate minimum value that presets, if, enter step 504, otherwise, step 505 entered;
Wherein, can referring to the mode of step 202 among the embodiment one, make the base station obtain the type of adjacent twice uplink scheduling.Owing in embodiment one, describing in detail, so locate to repeat no more.
Step 504: reduce the RB quantity of PUSCH scheduling in the current uplink scheduling and/or reduce the MCS value, make the error rate of system be not less than the error rate minimum value that presets, process ends;
For fear of the sudden change of the transmitting power impact on upstream data. signals, the base station is judged first if carry out current uplink scheduling according to the scheduling strategy that presets, whether the error rate of system is less than the error rate minimum value that presets, if, illustrate if carry out current uplink scheduling according to the scheduling strategy that presets, can't satisfy system to the requirement of demodulation performance, therefore, can reduce the RB quantity of PUSCH scheduling in the current uplink scheduling or reduce the MCS value, with this error rate that improves system, make the error rate of system be not less than the error rate minimum value that presets.Perhaps, also can reduce simultaneously the RB quantity of current uplink scheduling and lower the MCS value, finally make the error rate of system be not less than the error rate minimum value that presets.When the error rate of system bring up to be not less than the error rate minimum value that presets after, the demodulation performance of system also just improves thereupon, thereby has avoided distortion and problem that the demodulation performance that brings descends.
Can reduce according to the mode of step 203 among the embodiment one RB quantity or reduce the MCS value, repeat no more herein.
Need to prove, the embodiment of the present application does not limit the concrete numerical value of error rate minimum value, can arrange arbitrarily the specific requirement of the demodulation performance of system according to the user.For example, when the user has relatively high expectations to the demodulation performance of system, a higher error rate minimum value can be set, when the user is low to the demodulation performance requirement of system, a lower error rate minimum value can be set.
Step 505: carry out current uplink scheduling, process ends according to the described scheduling strategy that presets.
Need to prove, the embodiment of the present application is not specifically limited the scheduling strategy that presets, and can adopt any scheduling strategy of the prior art to carry out current uplink scheduling.
As the optional mode of another kind, in step 502, be PUCCH scheduling or SRS scheduling if identify current uplink scheduling, then direct execution in step 505 is namely carried out current uplink scheduling according to the scheduling strategy that presets.
As can be seen from the above-described embodiment, if current uplink scheduling comprises PUSCH scheduling and SRS scheduling simultaneously, when carrying out current uplink scheduling according to the scheduling strategy that presets, the error rate of system is during less than the error rate minimum value that presets, namely, when the demodulation performance of system can't meet the demands, by the RB quantity that reduces PUSCH scheduling in the uplink scheduling or the MCS value that reduces the PUSCH scheduling, perhaps the mode of both combinations is adjusted, make the error rate of system be not less than the error rate minimum value that presets, thereby can improve the demodulation performance of whole system.
Embodiment five
The device that the corresponding realization upstream data of the method that the embodiment of the present application also provides the realization upstream data among a kind of and the embodiment one to send sends.See also Fig. 6, it realizes the structure chart of an embodiment of the device that upstream data sends for the application is a kind of.This device comprises: receiving element 601, demodulation performance judging unit 602 and the first time-frequency resource distributing unit 603.Operation principle below in conjunction with this device is further introduced its internal structure and annexation.
Receiving element 601 is used for the uplink scheduling request that receiving terminal sends;
Demodulation performance judging unit 602 is used for judging that whether the error rate of system is less than the error rate minimum value that presets when carrying out current uplink scheduling according to the scheduling strategy that presets;
The first time-frequency resource distributing unit 603, be used for when the judged result of described demodulation performance judging unit when being, reduce the RB quantity of current uplink scheduling and/or reduce the MCS value, make the error rate of system be not less than the error rate minimum value that presets, otherwise, carry out current uplink scheduling according to the described scheduling strategy that presets.
Preferably, see also Fig. 7, it is a structural representation of demodulation performance judging unit among embodiment of the application, and as shown in Figure 7, demodulation performance judging unit 602 comprises: the first recognin unit 6021 and the first judgment sub-unit 6022, wherein,
The first recognin unit 6021 is for the scheduling type of the previous scheduling of identifying current uplink scheduling and current uplink scheduling;
The first judgment sub-unit 6022 is Physical Uplink Shared Channel PUSCH scheduling if be used for current uplink scheduling, and current uplink scheduling previous be scheduling to the PUCCH scheduling, judges that whether the error rate of system is less than the error rate minimum value that presets.
Perhaps, in the preferred mode of another kind, demodulation performance judging unit 602 comprises: the first recognin unit 6021 and the second judgment sub-unit 6023, see also Fig. 8, and it is the structural representation of demodulation performance judging unit among another embodiment of the application, wherein,
The first recognin unit 6021 is for the scheduling type of the previous scheduling of identifying current uplink scheduling and current uplink scheduling;
The second judgment sub-unit 6023 is the PUSCH scheduling if be used for current uplink scheduling, and current uplink scheduling previous be scheduling to the PUSCH scheduling, judges that whether the error rate of system is less than the error rate minimum value that presets.
Perhaps, in another preferred mode, demodulation performance judging unit 602 comprises: the first recognin unit 6021 and the 3rd judgment sub-unit 6024, see also Fig. 9, and it is the structural representation of demodulation performance judging unit among another embodiment of the application, wherein,
The first recognin unit 6021 is for the scheduling type of the previous scheduling of identifying current uplink scheduling and current uplink scheduling;
The 3rd judgment sub-unit 6024 is the PUSCH scheduling if be used for current uplink scheduling, and current uplink scheduling previous be scheduling to the SRS scheduling, judges that whether the error rate of system is less than the error rate minimum value that presets.
Except the structure shown in Fig. 7-9, see also Figure 10, it is the structural representation of demodulation performance judging unit among embodiment of the application, demodulation performance judging unit 602 comprises:
The second recognin unit 6025 is for the type of identifying current uplink scheduling;
The 4th judgment sub-unit 6026 comprises PUSCH scheduling and SRS scheduling simultaneously if be used for current uplink scheduling, whether judges the error rate of system less than the error rate minimum value that presets,
The first time-frequency resource distributing unit 603 then, be used for when the judged result of described the 4th judgment sub-unit when being, reduce the RB quantity of PUSCH scheduling in the current uplink scheduling and/or reduce the MCS value, make the error rate of system be not less than the error rate minimum value that presets, otherwise, carry out current uplink scheduling according to the described scheduling strategy that presets.
Except structure shown in Figure 6, further preferred, see also Figure 11, it is the structural representation of realizing the device that upstream data sends among another embodiment of the application, this device is on Fig. 6 basis, also comprising the second time-frequency resource distributing unit 604, is PUCCH scheduling or SRS scheduling if be used for current uplink scheduling, carries out current uplink scheduling according to the described scheduling strategy that presets.
This shows, its beneficial effect is: when carrying out current uplink scheduling according to the scheduling strategy that presets, the error rate of system is during less than the error rate minimum value that presets, namely, when the demodulation performance of system can't meet the demands, by the RB quantity that reduces current uplink scheduling or the MCS value that reduces current uplink scheduling, perhaps the mode of both combinations was adjusted, make the error rate of system be not less than the error rate minimum value that presets, thereby can improve the demodulation performance of whole system.
Need to prove, one of ordinary skill in the art will appreciate that all or part of flow process that realizes in above-described embodiment method, to come the relevant hardware of instruction to finish by computer program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process such as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
Above a kind of method and apparatus of realizing that upstream data sends provided by the present invention is described in detail, used specific embodiment herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (12)
1. a method that realizes that upstream data sends is characterized in that, comprising:
The current uplink scheduling request that receiving terminal sends;
When carrying out current uplink scheduling according to the scheduling strategy that presets, judge that whether the error rate of system is less than the error rate minimum value that presets;
If so, reduce the Resource Block RB quantity of current uplink scheduling and/or reduce modulation coding mode MCS value, make the error rate of system be not less than the error rate minimum value that presets, otherwise, current uplink scheduling carried out according to the described scheduling strategy that presets.
2. method according to claim 1 is characterized in that, and is described when carrying out current uplink scheduling according to the scheduling strategy that presets, and judges whether the error rate of system comprises less than the error rate minimum value that presets:
Identify the scheduling type of the previous scheduling of current uplink scheduling and current uplink scheduling;
If current uplink scheduling is Physical Uplink Shared Channel PUSCH scheduling, and current uplink scheduling previous be scheduling to the PUCCH scheduling, judges that whether the error rate of system is less than the error rate minimum value that presets.
3. method according to claim 1 is characterized in that, and is described when carrying out current uplink scheduling according to the scheduling strategy that presets, and judges whether the error rate of system comprises less than the error rate minimum value that presets:
Identify the scheduling type of the previous scheduling of current uplink scheduling and current uplink scheduling;
If current uplink scheduling is PUSCH scheduling, and current uplink scheduling previous be scheduling to the PUSCH scheduling, judges that whether the error rate of system is less than the error rate minimum value that presets.
4. method according to claim 1 is characterized in that, and is described when carrying out current uplink scheduling according to the scheduling strategy that presets, and judges whether the error rate of system comprises less than the error rate minimum value that presets:
Identify the scheduling type of the previous scheduling of current uplink scheduling and current uplink scheduling;
If current uplink scheduling is PUSCH scheduling, and current uplink scheduling previous be scheduling to the SRS scheduling, judges that whether the error rate of system is less than the error rate minimum value that presets.
5. method according to claim 1 is characterized in that, and is described when carrying out current uplink scheduling according to the scheduling strategy that presets, and judges whether the error rate of system comprises less than the error rate minimum value that presets:
Identify the type of current uplink scheduling;
If current uplink scheduling comprises PUSCH scheduling and SRS scheduling simultaneously, whether judge the error rate of system less than the error rate minimum value that presets,
Then the Resource Block RB quantity of the current uplink scheduling of described minimizing and/or reduction modulation coding mode MCS value are: the RB quantity and/or the MCS value that reduce PUSCH scheduling in the current uplink scheduling.
6. the described method of any one according to claim 1-5 is characterized in that, described method also comprises:
If when current uplink scheduling is PUCCH scheduling or SRS scheduling, carry out current uplink scheduling according to the described scheduling strategy that presets.
7. a device of realizing that upstream data sends is characterized in that, comprising:
Receiving element is used for the uplink scheduling request that receiving terminal sends;
The demodulation performance judging unit is used for judging that whether the error rate of system is less than the error rate minimum value that presets when carrying out current uplink scheduling according to the scheduling strategy that presets;
The first time-frequency resource distributing unit, be used for when the judged result of described demodulation performance judging unit when being, reduce the RB quantity of current uplink scheduling and/or reduce the MCS value, make the error rate of system be not less than the error rate minimum value that presets, otherwise, carry out current uplink scheduling according to the described scheduling strategy that presets.
8. device according to claim 7 is characterized in that, described demodulation performance judging unit comprises:
The first recognin unit is for the scheduling type of the previous scheduling of identifying current uplink scheduling and current uplink scheduling;
The first judgment sub-unit is Physical Uplink Shared Channel PUSCH scheduling if be used for current uplink scheduling, and current uplink scheduling previous be scheduling to the PUCCH scheduling, judges that whether the error rate of system is less than the error rate minimum value that presets.
9. device according to claim 7 is characterized in that, described demodulation performance judging unit comprises:
The first recognin unit is for the scheduling type of the previous scheduling of identifying current uplink scheduling and current uplink scheduling;
The second judgment sub-unit is the PUSCH scheduling if be used for current uplink scheduling, and current uplink scheduling previous be scheduling to the PUSCH scheduling, judges that whether the error rate of system is less than the error rate minimum value that presets.
10. device according to claim 7 is characterized in that, described demodulation performance judging unit comprises:
The first recognin unit is for the scheduling type of the previous scheduling of identifying current uplink scheduling and current uplink scheduling;
The 3rd judgment sub-unit is the PUSCH scheduling if be used for current uplink scheduling, and current uplink scheduling previous be scheduling to the SRS scheduling, judges that whether the error rate of system is less than the error rate minimum value that presets.
11. device according to claim 7 is characterized in that, described demodulation performance judging unit comprises:
The second recognin unit is for the type of identifying current uplink scheduling;
The 4th judgment sub-unit comprises PUSCH scheduling and SRS scheduling simultaneously if be used for current uplink scheduling, whether judges the error rate of system less than the error rate minimum value that presets,
The first time-frequency resource distributing unit then, concrete be used for when the judged result of described the 4th judgment sub-unit when being, reduce the RB quantity of PUSCH scheduling in the current uplink scheduling and/or reduce the MCS value, make the error rate of system be not less than the error rate minimum value that presets, otherwise, carry out current uplink scheduling according to the described scheduling strategy that presets.
12. the described device of any one according to claim 7-11 is characterized in that, described device also comprises:
The second time-frequency resource distributing unit is PUCCH scheduling or SRS scheduling if be used for current uplink scheduling, carries out current uplink scheduling according to the described scheduling strategy that presets.
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| PCT/CN2011/076407 WO2012159298A1 (en) | 2011-06-27 | 2011-06-27 | Method and apparatus for implementing uplink data transmission |
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| WO2012159298A1 (en) | 2012-11-29 |
| CN102959888B (en) | 2015-06-17 |
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