EP2786628A1 - Resource allocation for small data volume packet switched service messages in a mobile communications network system - Google Patents

Resource allocation for small data volume packet switched service messages in a mobile communications network system

Info

Publication number
EP2786628A1
EP2786628A1 EP11801640.1A EP11801640A EP2786628A1 EP 2786628 A1 EP2786628 A1 EP 2786628A1 EP 11801640 A EP11801640 A EP 11801640A EP 2786628 A1 EP2786628 A1 EP 2786628A1
Authority
EP
European Patent Office
Prior art keywords
user equipment
assigning
radio access
persistent scheduling
access network
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP11801640.1A
Other languages
German (de)
French (fr)
Inventor
Harri Kalevi Holma
Jussi Petteri REUNANEN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Solutions and Networks Oy
Original Assignee
Nokia Solutions and Networks Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nokia Solutions and Networks Oy filed Critical Nokia Solutions and Networks Oy
Publication of EP2786628A1 publication Critical patent/EP2786628A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management

Definitions

  • the present invention relates to resource allocation for small data volume packet switched service messages in a mobile communications network system, e.g. an LTE/LTE-advance system .
  • UL uplink In a mobile communications network system like LTE all resources that a UE can use in UL and DL need to be informed as per each UE in the system. This resource allocation information is given to the UEs using a physical control channel such as PDCCH.
  • PDCCH physical control channel
  • Fig. 1 shows a diagram illustrating a resource allocation method in a mobile communications network system such as LTE, that uses dynamic PDCCH resource allocation.
  • Resource usage is drawn upon TTI .
  • Resources in PDCCH are shown in grey and resources in PDSCH are indicated in a wave pattern.
  • PDCCH grant for original transmission and PDCCH grant for retransmission are dynamically allocated. According to the allocated PDCCH grant for original transmission, the smart phone sends a keep alive message every 5 minutes. Retransmission of a keep alive message may be done at the PDCCH grant for retransmission .
  • the invention aims at overcoming the above problems by providing methods and apparatuses as defined in the appended claims .
  • the invention may also be implemented by a computer program product .
  • a semi persistent scheduling method is proposed for messaging between user equipments and P services in a mobile communications network system, the messaging using small amount of data messages.
  • PDCCH capacity can be saved for actual larger resource allocations .
  • Fig. 1 shows a diagram illustrating a resource allocation me thod using dynamic allocation of resources.
  • Fig. 2 shows a schematic block diagram illustrating a configuration of control units in which examples of embodiments o the invention are implementable .
  • Fig. 3 shows a signaling diagram illustrating signaling between a user equipment and base stations according to an embodiment of the invention .
  • Fig. 4 shows a diagram illustrating a resource allocation method using semi persistent allocation of resources according to an embodiment of the invention.
  • FIG. 2 For illustrating a simplified block diagram of various electronic devices that are suitable for use in practicing the exemplary embodiments of this invention.
  • a control unit 10 which may be part of an UE 10 which may be a smart phone, includes processing resources 11, memory resources 12 that may store a program, and interfaces 13 which may include a suitable radio frequency (RF) transceiver coupled to one or more antennas (not shown) for bidirectional wireless communications over one or more wireless links, e.g. link 15, with a control unit 20, which may be part of a base station, e.g. an eNodeB, of a radio access network of a communications system.
  • the processing resources 11, memory resources 12 and interfaces 13 are connected by a link 14.
  • the control unit 20 includes processing resources 21, memory resources 22 and interfaces 23, which are connected by a link 24.
  • the memory resources 22 may store a program, and the interfaces 23 may include a suitable radio frequency (RF) tran- sceiver coupled to one or more antennas (not shown) for bidirectional wireless communications over one or more wireless links, e.g. link 15, with the control unit 10.
  • the interfaces 23 may also include a (hardwire) link 25 connecting the control unit 20 to a control unit 30 which may be part of anoth- er base station of the radio access network.
  • the control unit 30 includes processing resources 31, memory resources 32 and interfaces 33, which are connected by a link 34.
  • the memory resources 32 may store a program
  • the in- terfaces 33 may include a suitable radio frequency (RF) transceiver coupled to one or more antennas (not shown) for bidirectional wireless communications over one or more wireless links and a (hardwire) link 25 connecting the control unit 30 to the control unit 20.
  • RF radio frequency
  • connection means any connection or coupling, either direct or indirect, between two or more elements, and may encompass the presence of one or more intermediate elements between two elements that are “connected” or “coupled” together.
  • the coupling or connection between the elements can be physical, logical, or a combination thereof.
  • two elements may be considered to be “connected” or “coupled” together by the use of one or more wires, cables and printed electrical connec- tions, as well as by the use of electromagnetic energy, such as electromagnetic energy having wavelengths in the radio frequency region, the microwave region and the optical (both visible and invisible) region, as non-limiting examples.
  • At least one of the programs stored in the memory resources 12, 22, 32 is assumed to include program instructions that, when executed by the associated processing resources 11, 21, 31, enable the electronic device to operate in accordance with the exemplary embodiments of this invention, as detailed below.
  • Inherent in the processing resources 11, 21, 31 is a clock to enable synchronism among the various apparatus for transmissions and receptions within the appropriate time intervals and slots required, as the scheduling grants and the granted resources/subframes are time dependent.
  • the transceivers include both transmitter and receiver, and inherent in each is a modulator/demodulator commonly known as a modem.
  • the processing resources 21, 31 also are assumed to each include a modem to facilitate communication over the (hardwire) link 25 between the control unit 20 and the control unit 30.
  • the exemplary embodiments of this invention may be implemented by computer software stored in the memory resources 12, 22, 32 and executable by the processing resources 11, 21, 31, respectively, or by hardware, or by a combination of software and/or firmware and hardware in any or all of the devices shown.
  • control unit 10 can include, but are not limited to, mobile stations, cellular telephones, smart phones, personal digital assistants (PDAs) having wireless communication capabilities, portable computers having wireless communication capabilities, image capture devices such as digital cameras having wireless cora- munication capabilities, gaming devices having wireless communication capabilities, music storage and playback appliances having wireless communication capabilities, Internet appliances permitting wireless Internet access and browsing, as well as portable units or terminals that incorporate com- binations of such functions .
  • PDAs personal digital assistants
  • portable computers having wireless communication capabilities
  • image capture devices such as digital cameras having wireless cora- munication capabilities
  • gaming devices having wireless communication capabilities
  • music storage and playback appliances having wireless communication capabilities
  • Internet appliances permitting wireless Internet access and browsing, as well as portable units or terminals that incorporate com- binations of such functions .
  • the memory resources 12, 22, 32 may be of any type suitable to the local technical environment and may be implemented us- ing any suitable data storage technology, such as semiconductor-based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory and removable memory.
  • the processing resources 11, 21, 31 may be of any type suitable to the local technical environment, and may include one or more of general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on a multi-core processor architecture, as non-limiting examples.
  • smart phones are enabled to select a certain keep alive interval from possible intervals indicated by a network, e.g. a radio access network of a mobile communications network system, and therefore utilise capacity allocations without PDCCH signalling for these small data volume keep alive messages.
  • a network e.g. a radio access network of a mobile communications network system
  • a base station 1 of the network assigns (SI) some possible intervals (candidate intervals) for sending messages with small data volume from a UE, the messages concerning a packet switched service in the communications network.
  • the messages comprise keep alive messages.
  • the base station 1 sends (S2) the possible intervals which may be in the order of tens of seconds or a few minutes, e.g. 20s, lmin, 2min, 4min, 8min, lOmin, 12min, 20min intervals, to the UE .
  • the UE e.g.
  • control unit 10 selects (S3) the most suitable interval (e.g. keep alive interval) for each of applications running in the UE, which require a messaging such as a keep alive messaging, and sends (S4) a corresponding response back to the base station 1.
  • the most suitable interval e.g. keep alive interval
  • the base station 1 assigns (S5) an SPS interval and a resource amount based on the UE ' s selection, informs (S6) the UE about the assigning and starts (S8) resource semi persis- tent scheduling for a duration determined by the base station 1.
  • the UE may also be informed about the determined duration in S6.
  • the UE is enabled to send messages concerning the PS service according to the information received in S6.
  • Configuration of the resource semi persistent scheduling and its duration are performed via higher layers, e.g. RRC on layer 3.
  • RRC Radio Resource Control
  • Fig. 4 shows resource semi persistent scheduling according to an embodiment of the invention.
  • the semi persistent scheduling is performed for small data volume messaging, i.e. messaging requiring small PS resource amount.
  • re- source usage is drawn upon TTI .
  • Resources in PDCCH are shown in grey and resources in PDSCH are indicated in a wave pattern.
  • PDCCH grant for original transmission is given as persistent allocation per selected interval (e.g. selected keep alive message interval), and PDCCH grant for retransmission is dynamically allocated.
  • the UE sends a keep alive message every 20s. Retransmission of a keep alive message may be done at the PDCCH grant for retransmission.
  • periodicity of SPS is selected by the UE from all possible values given by the network, e.g. the base station 1, which is configured via higher layers. Duration of SPS allocation also is configured via higher layers.
  • SPS information may be forwarded (S7) from the base station 1 to a base station 2, e.g. the control unit 30 as a part of another BTS, over an X2 inter- face in case of mobility.
  • a DRX method may be selected taking into account SPS allocations as per UE .
  • control unit 10 shown in Fig. 3 using its processing and memory resources 11, 12 and interfaces 13, is configured to receive the indication in SI via the link 15, select the interval (s) in S3, send the response in S4 via the link 15, receive the information in S6 via the link 15, and send messages concerning the PS service according to the information received in S6 via the link 15.
  • the control unit 20 shown in Fig. 3, using its processing and memory resources 21, 22 and interfaces 23, is configured to assign the candi- date intervals in SI, send the indication in S2 via the link 15, receive the response in S4 via the link 15, assign the selected interval (s) in S5, send the information to the UE in S6 via the link 15, inform the base station 2 in S7 via the link 25 and perform SPS in S8.
  • control unit 30 shown in Fig. 3 using its processing and memory resources 31, 32 and interfaces 33, is configured to receive the information from the base station 1 in S7 via the link 25.
  • An advantage of the invention is that physical control chan- nel capacity can be saved for actual larger resource allocations .
  • an apparatus of a radio access network of a communications network system comprises means for assigning candidate intervals for sending messages with small data volume from a user equipment, the messages concerning a packet switched service in the communications network system, and means for sending an indication of the candidate inter- vals to the user equipment.
  • the apparatus may further comprise means for receiving a response from the user equipment indicating at least one selected interval, selected from the candidate intervals, means for assigning the at least one selected interval and a resource amount, means for informing the user equipment about said assigning, and means for starting resource semi persistent scheduling based on said assigning.
  • the apparatus may further comprise means for determining a duration for performing the resource semi persistent scheduling based on said assigning, means for informing the user equipment about the determined duration, and means for performing the resource semi persistent scheduling for the de- termined duration.
  • the above means for assigning, sending, receiving, determining and informing may perform the assigning, sending, receiving, determining and informing by using a higher layer proto- col .
  • the apparatus may further comprise means for sending information on an allocation of the resource semi persistent scheduling for the user equipment to other apparatuses of the ra- dio access network.
  • the means for sending may transmit this information over an X2 interface, and the apparatus may comprise means for selecting a discontinuous reception method based on the allocation of the resource semi persistent scheduling for the user equipment .
  • the apparatus may be equipped with processing resources, memory resources and interfaces, and the means for assigning, sending, receiving, determining, informing, starting, performing and selecting may be implemented by these resources and interfaces, e.g. the processing resources 21, memory resources 22 and interfaces 23.
  • an apparatus of a radio access network of a communications network system comprises means for receiving information about an allocation of a resource semi persistent scheduling for a user equipment, wherein the resource semi persistent scheduling is based on assigning an interval for sending messages with small data volume from the user equip- ment, the messages concerning a packet switched service in the communications network system, and means for, when the user equipment moves to becoming served by the apparatus, performing the resource semi persistent scheduling for the user equipment with a duration included in the information.
  • the means for receiving may receive this information over an X2 interface, and the apparatus may comprise means for selecting a discontinuous reception method based on the allocation of the resource semi persistent scheduling for the user equipment .
  • the apparatus may be equipped with processing resources, memory resources and interfaces, and the means for receiving, performing and selecting may be implemented by these resources and interfaces, e.g. the processing resources 31, memory resources 32 and interfaces 33.
  • a user equipment in a communications network system comprising a radio access network, e.g. the control unit 10, comprises means for receiving, from the radio access network, an indication of can- didate intervals for sending messages with small data volume from the user equipment, the messages concerning a packet switched service in the communications network system, means for selecting at least one interval from the candidate intervals for applications requiring the packet switched service, and means for sending a response to the radio access network, indicating the at least one selected interval .
  • the user equipment may further comprise means for receiving information about assigning the at least one selected inter- val and a resource amount at the radio access network, and means for sending the messages for the applications with the at least one selected interval .
  • the user equipment may further comprise means for receiving information on a duration for performing a resource semi persistent scheduling based on the assigning, determined by the radio access network, and means for performing the sending of the messages for the determined duration.
  • the means for receiving the indication, the means for sending the response, and the means for receiving the information may perform the receiving and sending by using a higher layer protocol .
  • the user equipment may be equipped with processing resources, memory resources and interfaces, and the means for sending, receiving, performing and selecting may be implemented by these resources and interfaces, e.g. the processing resources 11, memory resources 12 and interfaces 13.
  • a radio access network of a communications network system assigns candidate intervals for sending messages with small data volume from a user equipment, the messages concerning a packet switched service in the communications network system, and sends an indication of the candidate intervals to the user equipment.
  • the user equipment selects at least one interval from the candidate intervals for applications requiring the packet switched service, and sends a corresponding response to the radio access network.
  • the radio access network may assign the at least one selected interval and a resource amount, inform the user equipment about the assigning, and start resource semi persistent scheduling based on the assigning.

Abstract

A radio access network of a communications network system assigns (S1) candidate intervals for sending messages with small data volume from a user equipment, the messages concerning a packet switched service in the communications network system, and sends (S2) an indication of the candidate intervals to the user equipment. The user equipment selects (S3) at least one interval from the candidate intervals for applications requiring the packet switched service, and sends (S4) a corresponding response to the radio access network. Based on the response the radio access network may assign (S5) the at least one selected interval and a resource amount, inform (S6) the user equipment about the assigning, and start (S8) resource semi persistent scheduling based on the assigning.

Description

RESOURCE ALLOCATION FOR SMALL DATA VOLUME PACKET SWITCHED SERVICE MESSAGES IN A MOBILE COMMUNICATIONS NETWORK SYSTEM
BACKGROUND OF THE INVENTION Field of the invention
The present invention relates to resource allocation for small data volume packet switched service messages in a mobile communications network system, e.g. an LTE/LTE-advance system .
Related background Art
The following meanings for the abbreviations used in this specification apply:
BTS base transceiver station
DL downlink eNodeB evolved node B
LTE long term evolution
PDCCH physical DL control channel
PDSCH physical DL shared channel
PS packet switched
RRC radio resource control
SPS semi persistent scheduling
TTI transmission time interval
UE user equipment
UL uplink In a mobile communications network system like LTE all resources that a UE can use in UL and DL need to be informed as per each UE in the system. This resource allocation information is given to the UEs using a physical control channel such as PDCCH.
However, as the physical control channel has limited capacity especially in a case when UEs are located under poor radio conditions and therefore robust channel coding is needed, al- location of all the resources available per each TTI might not be possible. This is especially a problem in a case when very small data volume messages are being sent by UEs, e.g. smart phones, for several different applications . For exam- pie, a keep alive message which may be used e.g. to check if there are any emails present in a server is a small data vo- lume message.
Fig. 1 shows a diagram illustrating a resource allocation method in a mobile communications network system such as LTE, that uses dynamic PDCCH resource allocation. Resource usage is drawn upon TTI . Resources in PDCCH are shown in grey and resources in PDSCH are indicated in a wave pattern. PDCCH grant for original transmission and PDCCH grant for retransmission are dynamically allocated. According to the allocated PDCCH grant for original transmission, the smart phone sends a keep alive message every 5 minutes. Retransmission of a keep alive message may be done at the PDCCH grant for retransmission .
Keep alive messaging between the smart phone and the sever could easily overload the PDCCH, the overload preventing efficient use of all the available resources in the communications system. SUMMARY OF THE INVENTION
The invention aims at overcoming the above problems by providing methods and apparatuses as defined in the appended claims . The invention may also be implemented by a computer program product .
According to an embodiment, a semi persistent scheduling method is proposed for messaging between user equipments and P services in a mobile communications network system, the messaging using small amount of data messages.
According to an embodiment of the invention, PDCCH capacity can be saved for actual larger resource allocations .
The above and still further objects, features and advantages of the invention will become more apparent upon referring to the description and the accompanying drawings .
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 shows a diagram illustrating a resource allocation me thod using dynamic allocation of resources.
Fig. 2 shows a schematic block diagram illustrating a configuration of control units in which examples of embodiments o the invention are implementable . Fig. 3 shows a signaling diagram illustrating signaling between a user equipment and base stations according to an embodiment of the invention .
Fig. 4 shows a diagram illustrating a resource allocation method using semi persistent allocation of resources according to an embodiment of the invention.
DESCRIPTION OF PREFERRED EMBODIMENTS In the following, examples and embodiments of the present invention are described with reference to the drawings.
As a preliminary matter before exploring details of various implementations, reference is made to Fig. 2 for illustrating a simplified block diagram of various electronic devices that are suitable for use in practicing the exemplary embodiments of this invention.
A control unit 10, which may be part of an UE 10 which may be a smart phone, includes processing resources 11, memory resources 12 that may store a program, and interfaces 13 which may include a suitable radio frequency (RF) transceiver coupled to one or more antennas (not shown) for bidirectional wireless communications over one or more wireless links, e.g. link 15, with a control unit 20, which may be part of a base station, e.g. an eNodeB, of a radio access network of a communications system. The processing resources 11, memory resources 12 and interfaces 13 are connected by a link 14. The control unit 20 includes processing resources 21, memory resources 22 and interfaces 23, which are connected by a link 24. The memory resources 22 may store a program, and the interfaces 23 may include a suitable radio frequency (RF) tran- sceiver coupled to one or more antennas (not shown) for bidirectional wireless communications over one or more wireless links, e.g. link 15, with the control unit 10. The interfaces 23 may also include a (hardwire) link 25 connecting the control unit 20 to a control unit 30 which may be part of anoth- er base station of the radio access network.
The control unit 30 includes processing resources 31, memory resources 32 and interfaces 33, which are connected by a link 34. The memory resources 32 may store a program, and the in- terfaces 33 may include a suitable radio frequency (RF) transceiver coupled to one or more antennas (not shown) for bidirectional wireless communications over one or more wireless links and a (hardwire) link 25 connecting the control unit 30 to the control unit 20.
The terms "connected, " "coupled, " or any variant thereof, mean any connection or coupling, either direct or indirect, between two or more elements, and may encompass the presence of one or more intermediate elements between two elements that are "connected" or "coupled" together. The coupling or connection between the elements can be physical, logical, or a combination thereof. As employed herein two elements may be considered to be "connected" or "coupled" together by the use of one or more wires, cables and printed electrical connec- tions, as well as by the use of electromagnetic energy, such as electromagnetic energy having wavelengths in the radio frequency region, the microwave region and the optical (both visible and invisible) region, as non-limiting examples. r
6
At least one of the programs stored in the memory resources 12, 22, 32 is assumed to include program instructions that, when executed by the associated processing resources 11, 21, 31, enable the electronic device to operate in accordance with the exemplary embodiments of this invention, as detailed below. Inherent in the processing resources 11, 21, 31 is a clock to enable synchronism among the various apparatus for transmissions and receptions within the appropriate time intervals and slots required, as the scheduling grants and the granted resources/subframes are time dependent. The transceivers include both transmitter and receiver, and inherent in each is a modulator/demodulator commonly known as a modem. The processing resources 21, 31 also are assumed to each include a modem to facilitate communication over the (hardwire) link 25 between the control unit 20 and the control unit 30.
The exemplary embodiments of this invention may be implemented by computer software stored in the memory resources 12, 22, 32 and executable by the processing resources 11, 21, 31, respectively, or by hardware, or by a combination of software and/or firmware and hardware in any or all of the devices shown.
In general, the various embodiments of the control unit 10 can include, but are not limited to, mobile stations, cellular telephones, smart phones, personal digital assistants (PDAs) having wireless communication capabilities, portable computers having wireless communication capabilities, image capture devices such as digital cameras having wireless cora- munication capabilities, gaming devices having wireless communication capabilities, music storage and playback appliances having wireless communication capabilities, Internet appliances permitting wireless Internet access and browsing, as well as portable units or terminals that incorporate com- binations of such functions .
The memory resources 12, 22, 32 may be of any type suitable to the local technical environment and may be implemented us- ing any suitable data storage technology, such as semiconductor-based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory and removable memory. The processing resources 11, 21, 31 may be of any type suitable to the local technical environment, and may include one or more of general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on a multi-core processor architecture, as non-limiting examples.
According to an embodiment of the invention, smart phones are enabled to select a certain keep alive interval from possible intervals indicated by a network, e.g. a radio access network of a mobile communications network system, and therefore utilise capacity allocations without PDCCH signalling for these small data volume keep alive messages.
Referring to Fig. 3, a base station 1 of the network, e.g. the control unit 20 as a part of a BTS, assigns (SI) some possible intervals (candidate intervals) for sending messages with small data volume from a UE, the messages concerning a packet switched service in the communications network. For example, the messages comprise keep alive messages. The base station 1 sends (S2) the possible intervals which may be in the order of tens of seconds or a few minutes, e.g. 20s, lmin, 2min, 4min, 8min, lOmin, 12min, 20min intervals, to the UE . The UE, e.g. the control unit 10 as a part of a smart phone, selects (S3) the most suitable interval (e.g. keep alive interval) for each of applications running in the UE, which require a messaging such as a keep alive messaging, and sends (S4) a corresponding response back to the base station 1.
The base station 1 assigns (S5) an SPS interval and a resource amount based on the UE ' s selection, informs (S6) the UE about the assigning and starts (S8) resource semi persis- tent scheduling for a duration determined by the base station 1. The UE may also be informed about the determined duration in S6. Hence, the UE is enabled to send messages concerning the PS service according to the information received in S6.
Configuration of the resource semi persistent scheduling and its duration are performed via higher layers, e.g. RRC on layer 3. In other words, communications between the UE and the base station 1 in S2, S4 and S6 are performed via higher layer protocols such as RRC protocol.
Fig. 4 shows resource semi persistent scheduling according to an embodiment of the invention. The semi persistent scheduling is performed for small data volume messaging, i.e. messaging requiring small PS resource amount. In Fig. 4, re- source usage is drawn upon TTI . Resources in PDCCH are shown in grey and resources in PDSCH are indicated in a wave pattern. PDCCH grant for original transmission is given as persistent allocation per selected interval (e.g. selected keep alive message interval), and PDCCH grant for retransmission is dynamically allocated. According to the persistent allocation shown in Fig. 4, the UE sends a keep alive message every 20s. Retransmission of a keep alive message may be done at the PDCCH grant for retransmission. According to Fig. 4, periodicity of SPS is selected by the UE from all possible values given by the network, e.g. the base station 1, which is configured via higher layers. Duration of SPS allocation also is configured via higher layers.
Referring again to Fig. 3, SPS information may be forwarded (S7) from the base station 1 to a base station 2, e.g. the control unit 30 as a part of another BTS, over an X2 inter- face in case of mobility. A DRX method may be selected taking into account SPS allocations as per UE .
According to an embodiment of the invention, the control unit 10 shown in Fig. 3, using its processing and memory resources 11, 12 and interfaces 13, is configured to receive the indication in SI via the link 15, select the interval (s) in S3, send the response in S4 via the link 15, receive the information in S6 via the link 15, and send messages concerning the PS service according to the information received in S6 via the link 15.
According to an embodiment of the invention, the control unit 20 shown in Fig. 3, using its processing and memory resources 21, 22 and interfaces 23, is configured to assign the candi- date intervals in SI, send the indication in S2 via the link 15, receive the response in S4 via the link 15, assign the selected interval (s) in S5, send the information to the UE in S6 via the link 15, inform the base station 2 in S7 via the link 25 and perform SPS in S8.
According to an embodiment of the invention, the control unit 30 shown in Fig. 3, using its processing and memory resources 31, 32 and interfaces 33, is configured to receive the information from the base station 1 in S7 via the link 25.
An advantage of the invention is that physical control chan- nel capacity can be saved for actual larger resource allocations .
According to an aspect of the invention, an apparatus of a radio access network of a communications network system, e.g. the control unit 20 shown in Fig. 2, comprises means for assigning candidate intervals for sending messages with small data volume from a user equipment, the messages concerning a packet switched service in the communications network system, and means for sending an indication of the candidate inter- vals to the user equipment.
The apparatus may further comprise means for receiving a response from the user equipment indicating at least one selected interval, selected from the candidate intervals, means for assigning the at least one selected interval and a resource amount, means for informing the user equipment about said assigning, and means for starting resource semi persistent scheduling based on said assigning.
The apparatus may further comprise means for determining a duration for performing the resource semi persistent scheduling based on said assigning, means for informing the user equipment about the determined duration, and means for performing the resource semi persistent scheduling for the de- termined duration. The above means for assigning, sending, receiving, determining and informing may perform the assigning, sending, receiving, determining and informing by using a higher layer proto- col .
The apparatus may further comprise means for sending information on an allocation of the resource semi persistent scheduling for the user equipment to other apparatuses of the ra- dio access network. The means for sending may transmit this information over an X2 interface, and the apparatus may comprise means for selecting a discontinuous reception method based on the allocation of the resource semi persistent scheduling for the user equipment .
The apparatus may be equipped with processing resources, memory resources and interfaces, and the means for assigning, sending, receiving, determining, informing, starting, performing and selecting may be implemented by these resources and interfaces, e.g. the processing resources 21, memory resources 22 and interfaces 23.
According to an aspect of the invention, an apparatus of a radio access network of a communications network system, e.g. the control unit 30, comprises means for receiving information about an allocation of a resource semi persistent scheduling for a user equipment, wherein the resource semi persistent scheduling is based on assigning an interval for sending messages with small data volume from the user equip- ment, the messages concerning a packet switched service in the communications network system, and means for, when the user equipment moves to becoming served by the apparatus, performing the resource semi persistent scheduling for the user equipment with a duration included in the information. The means for receiving may receive this information over an X2 interface, and the apparatus may comprise means for selecting a discontinuous reception method based on the allocation of the resource semi persistent scheduling for the user equipment .
The apparatus may be equipped with processing resources, memory resources and interfaces, and the means for receiving, performing and selecting may be implemented by these resources and interfaces, e.g. the processing resources 31, memory resources 32 and interfaces 33.
According to an aspect of the invention, a user equipment in a communications network system comprising a radio access network, e.g. the control unit 10, comprises means for receiving, from the radio access network, an indication of can- didate intervals for sending messages with small data volume from the user equipment, the messages concerning a packet switched service in the communications network system, means for selecting at least one interval from the candidate intervals for applications requiring the packet switched service, and means for sending a response to the radio access network, indicating the at least one selected interval .
The user equipment may further comprise means for receiving information about assigning the at least one selected inter- val and a resource amount at the radio access network, and means for sending the messages for the applications with the at least one selected interval .
The user equipment may further comprise means for receiving information on a duration for performing a resource semi persistent scheduling based on the assigning, determined by the radio access network, and means for performing the sending of the messages for the determined duration.
The means for receiving the indication, the means for sending the response, and the means for receiving the information may perform the receiving and sending by using a higher layer protocol .
The user equipment may be equipped with processing resources, memory resources and interfaces, and the means for sending, receiving, performing and selecting may be implemented by these resources and interfaces, e.g. the processing resources 11, memory resources 12 and interfaces 13.
According to an aspect of the invention, a radio access network of a communications network system assigns candidate intervals for sending messages with small data volume from a user equipment, the messages concerning a packet switched service in the communications network system, and sends an indication of the candidate intervals to the user equipment. The user equipment selects at least one interval from the candidate intervals for applications requiring the packet switched service, and sends a corresponding response to the radio access network. Based on the response the radio access network may assign the at least one selected interval and a resource amount, inform the user equipment about the assigning, and start resource semi persistent scheduling based on the assigning.
It is to be understood that the above description is illustrative of the invention and is not to be construed as limiting the invention. Various modifications and applications may occur to those skilled in the art without departing from the true spirit and scope of the invention as defined by the appended claims .

Claims

CLAIMS :
1. A method for an apparatus of a radio access network of a communications network system, the method comprising: assigning candidate intervals for sending messages with small data volume from a user equipment, the messages concerning a packet switched service in the communications network system; and sending an indication of the candidate intervals to the user equipment.
2. The method of claim 1, comprising: receiving a response from the user equipment indicating at least one selected interval, selected from the candidate intervals; assigning the at least one selected interval and a resource amount; informing the user equipment about said assigning; and starting resource semi persistent scheduling based on said assigning.
3. The method of claim 2, comprising: determining a duration for performing the resource semi persistent scheduling based on said assigning; informing the user equipment about the determined duration; and performing the resource semi persistent scheduling for the determined duration.
4. The method of claim 3, wherein the assigning, sending, receiving, determining and informing is performed using a higher layer protocol .
5. The method of claim 2 or 3, comprising: sending information on an allocation of the resource semi persistent scheduling for the user equipment to other apparatuses of the radio access network.
6. A method for an apparatus of a radio access network of a communications network system, the method comprising: receiving information about an allocation of a resource semi persistent scheduling for a user equipment, wherein the resource semi persistent scheduling is based on assigning an interval for sending messages with small data volume from the user equipment, the messages concerning a packet switched service in the communications network system; and when the user equipment moves to becoming served by the apparatus, performing the resource semi persistent scheduling for the user equipment with a duration included in the information .
7. The method of claims 5 or 6, wherein the information is transmitted/received over an X2 interface, and/or a disconti- nuous reception method is selected based on the allocation of the resource semi persistent scheduling for the user equipment .
8. A method for a user equipment in a communications network system comprising a radio access network, the method comprising : receiving, from the radio access network, an indication of candidate intervals for sending messages with small data volume from the user equipment, the messages concerning a packet switched service in the communications network system; selecting at least one interval from the candidate intervals for applications requiring the packet switched service; and sending a response to the radio access network, indicating the at least one selected interval.
9. The method of claim 8, comprising: receiving information about assigning the at least one selected interval and a resource amount at the radio access network; and sending the messages for the applications with the at least one selected interval .
10. The method of claim 8 or 9, comprising: receiving information on a duration for performing a resource semi persistent scheduling based on the assigning, determined by the radio access network; and performing the sending of the messages for the determined duration.
11. The method of claim 10, wherein the receiving of the indication, the sending of the response and the receiving of the information are performed using a higher layer protocol.
12. A computer program product including a program for a processing device, comprising software code portions for performing the steps of any one of claims 1 to 11 when the program is run on the processing device.
13. The computer program product according to claim 12, wherein the computer program product comprises a computer- readable medium on which the software code portions are stored .
14. The computer program product according to claim 12, wherein the program is directly loadable into an internal memory of the processing device.
15. An apparatus of a radio access network of a communications network system, configured to : assign candidate intervals for sending messages with small data volume from a user equipment, the messages concerning a packet switched service in the communications network system; send an indication of the candidate intervals to the user equipment .
16. The apparatus of claim 15, configured to: receive a response from the user equipment indicating at least one selected interval, selected from the candidate in- tervals; assign the at least one selected interval and a resource amount ; inform the user equipment about said assigning; and start resource semi persistent scheduling based on said assigning.
17. The apparatus of claim 16, configured to: determine a duration for performing the resource semi persistent scheduling based on said assigning; inform the user equipment about the determined duration; and perform the resource semi persistent scheduling for the determined duration.
18. The apparatus of claim 17, configured to perform the assigning, sending, receiving, determining and informing using a higher layer protocol .
19. The apparatus of claim 16 or 17, configured to: send information on an allocation of the resource semi persistent scheduling for the user equipment to other apparatuses of the radio access network.
20. An apparatus of a radio access network of a communications network system, configured to : receive information about an allocation of a resource semi persistent scheduling for a user equipment, wherein the resource semi persistent scheduling is based on assigning an interval for sending messages with small data volume from the user equipment, the messages concerning a packet switched service in the communications network system; and when the user equipment moves to becoming served by the apparatus, perform the resource semi persistent scheduling for the user equipment with a duration included in the information .
21. The apparatus of claims 19 or 20, wherein the apparatus is configured to transmit/receive the information over an X2 interface, and/or select a discontinuous reception method based on the allocation of the resource semi persistent scheduling for the user equipment .
22. A user equipment in a communications network system comprising a radio access network, configured to: receive, from the radio access network, an indication of candidate intervals for sending messages with small data vo- lume from the user equipment, the messages concerning a packet switched service in the communications network system; select at least one interval from the candidate intervals for applications requiring the packet switched service; and send a response to the radio access network, indicating the at least one selected interval.
23. The user equipment of claim 22, configured to: receive information about assigning the at least one selected interval and a resource amount at the radio access network; and send the messages for the applications with the at least one selected interval.
24. The user equipment of claim 22 or 23, configured to: receive information on a duration for performing a resource semi persistent scheduling based on the assigning, determined by the radio access network; and perform the sending of the messages for the determined duration .
25. The user equipment of claim 24, configured to receive the indication, send the response and receive the information using a higher layer protocol .
EP11801640.1A 2011-12-01 2011-12-01 Resource allocation for small data volume packet switched service messages in a mobile communications network system Withdrawn EP2786628A1 (en)

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