Device and method for CSI processing based on multi-service priority queue
The disclosure relates to a mobile communication device circuitry, comprising: a radio receiver configured to receive a plurality of channel state information (CSI) measurement requests, each CSI measurement request triggering a CSI measurement; and a processor configured to process the plurality of CSI measurement triggers within a CSI reporting period according to a CSI computation scheduling which is based on a multi-service priority queue of multi-size jobs, each job corresponding to a respective CSI measurement trigger.
1. A mobile communication device circuitry, comprising:
a radio receiver configured to receive a plurality of channel state information (CSI) measurement requests, each CSI measurement request triggering a CSI measurement comprising a set of CSI elements; and
a processor configured to:
classify each CSI element according to an expected rate of time-variation of the respective CSI element; and
process the plurality of CSI measurement request within a CSI reporting period according to a CSI computation scheduling which is based on a multi-service priority queue of multi-size jobs, each job corresponding to a respective CSI measurement request.
2. The mobile communication device circuitry of claim 1 , wherein the processor is configured to derive a service type of a plurality of service types from the classification of CSI elements.
3. The mobile communication device circuitry of claim 2 , wherein the plurality of service types comprises the following service types:
full service (FS), where all CSI elements of the set of CSI elements are updated,
partial service (PS), where a subset of the set of CSI elements are updated, and
no service (NS), where the set of CSI elements is not updated.
4. The mobile communication device circuitry of claim 1 , wherein each job is associated with a distinct size, corresponding to a time needed by the mobile communication device circuitry to compute the respective job.
5. The mobile communication device circuitry of claim 1 , wherein the jobs correspond to jobs from a plurality of subscriber identification modules (SIMs).
6. The mobile communication device circuitry of claim 5 , wherein the CSI computation scheduling is configured to allow a first set of jobs from a first SIM of the plurality of SIMs and a second set of jobs from a second SIM of the plurality of SIMs to coexist in the multi-service priority queue.
7. The mobile communication device circuitry of claim 6 , wherein the multi-service priority queue comprises a number of single priority queues which is smaller than a number of SIMs.
8. The mobile communication device circuitry of claim 1 , wherein the processor is configured to provide each job with a limited time-to-live (TTL).
9. The mobile communication device circuitry of claim 8 , wherein the processor is configured to update the TTL of each job on a time basis.
10. The mobile communication device circuitry of claim 9 , wherein the processor is configured to queue the multi-size jobs arriving at the radio receiver within the multi-service priority queue.
11. The mobile communication device circuitry of claim 10 , wherein the processor is configured to re-sort all queued jobs in the multi-service priority queue with respect to a priority metric upon arrival of a set of new jobs.
12. The mobile communication device circuitry of claim 11 ,
wherein the priority metric is based on at least one or a combination of the following items:
a time since a last update of a respective job,
a radio channel coherence time, and
a time variation of recent updated CSI values.
13. The mobile communication device circuitry of claim 11 , wherein the processor is configured to allow a new job with a higher priority than the queued jobs to jump the queue, thereby reordering the queued jobs.
14. The mobile communication device circuitry of claim 9 , wherein the processor is configured to discard at least one job from the queue based on at least one of the following conditions:
a priority of the at least one job is below a threshold,
a position of the at least one job within the queued jobs is beyond a queue size, and
an expected time to serve the at least one job has become greater than a remaining TTL of the at least one job.
15. A method for processing a plurality of channel state information (CSI) measurement requests, the method comprising:
receiving the plurality of CSI measurement requests, each CSI measurement request triggering a CSI measurement including a set of CSI elements, wherein each CSI element is classified according to an expected rate of time-variation of the respective CSI element; and
processing the plurality of CSI measurement requests within a CSI reporting period according to a CSI computation scheduling which is based on a multi-service priority queue of multi-size jobs, each job corresponding to a respective CSI measurement request.
16. The method of claim 15 , comprising: deriving a service type of a plurality of service types from the classification of CSI elements.
17. The method of claim 16 , wherein the plurality of service types comprises the following service types:
full service (FS),
partial service (PS), and
no service (NS).
18. The method of one of claim 15 , wherein the jobs correspond to jobs from a plurality of subscriber identification modules (SIMs).
19. A mobile communication device circuitry, comprising:
a radio receiver configured to receive a plurality of channel state information (CSI) measurement requests, each CSI measurement request triggering a CSI measurement; and
a processor configured to process the plurality of CSI measurement request within a CSI reporting period according to a CSI computation scheduling which is based on a multi-service priority queue of multi-size jobs, each job corresponding to a respective CSI measurement request, wherein the jobs correspond to jobs from a plurality of subscriber identification modules (SIMs), the CSI computation scheduling being configured to allow a first set of jobs from a first SIM of the plurality of SIMs and a second set of jobs from a second SIM of the plurality of SIMs to coexist in the multi-service priority queue.
20. A mobile communication device circuitry, comprising:
a radio receiver configured to receive a plurality of channel state information (CSI) measurement requests, each CSI measurement request triggering a CSI measurement comprising a set of CSI elements; and
a processor configured to:
classify each CSI element according to an acted rate of time-variation of the respective CSI element;
process the plurality of CSI measurement request within a CSI reporting period according to a CSI computation scheduling which is based on a multi-service priority queue of multi-size jobs, each job corresponding to a respective CSI measurement request;
provide each job with a limited time-to-live (TTL);
update the TTL of each job on a time basis; and
queue the multi-size jobs arriving at the radio receiver within the multi-service priority queue.