Initial connection establishment in a wireless communication system
View Patent ↗A method, user equipment, network equipment and a system for initiating a wireless connection and subsequent communication over a shared physical resource in a wireless communication system between user equipment and network equipment comprising: processing a UE-derived temporary identifier; determining a set of channels that the user equipment will monitor; implicitly or explicitly communicating this channel set; communicating the temporary identifier as an identifier to the network equipment; communicating a downlink message on a channel belonging to the determined channel set conveying the temporary identifier and a description of a scheduled resource on a shared channel, the scheduled resource comprising a resource allocated to the user equipment by the network equipment; and communicating data on the scheduled resource in response to the downlink message.
1. A method of initiating a wireless connection and subsequent communication over a shared physical resource in a wireless communication system between user equipment and network equipment, the method, by the user equipment, comprising:
deriving an address to be used as a temporary identifier for the user equipment;
deriving a channel set of at least one downlink channel for the user equipment to receive communications from the network equipment;
transmitting an initial message to the network equipment, the initial message comprising the temporary identifier;
receiving a downlink message on a channel identified by the channel set, wherein the downlink message conveys the temporary identifier and a description of a scheduled resource on a shared channel, the scheduled resource comprising a resource allocated to the user equipment by the network equipment; and
communicating data on the scheduled resource in response to the downlink message.
2. The method of claim 1 , wherein the channel set is a single channel.
3. The method of claim 1 , wherein the channel set comprises multiple channels.
4. The method of claim 1 , wherein the deriving of the channel set comprises randomly selecting the channel set from a plurality of channel sets.
5. The method of claim 1 , wherein the deriving of the channel set comprises determining the channel set based on a global DE identifier.
6. The method of claim 5 , wherein the global DE identifier comprises one of a temporary mobile subscriber identity (TMSI), an international mobile subscriber identity (IMSI), or an international mobile equipment identity (IMEI).
7. The method of claim 1 , wherein the deriving of the channel set comprises determining the channel set as a function of one or more characteristics of a physical resource, and wherein the transmitting of the initial message comprises transmitting the initial message on the physical resource.
8. The method of claim 7 , wherein the characteristic of the physical resource comprises a parameter of time.
9. The method of claim 7 , wherein the characteristic of the physical resource comprises a parameter of frequency.
10. The method of claim 7 , wherein the characteristic of the physical resource comprises a parameter of a code.
11. The method of claim 1 , wherein the deriving of the channel set comprises determining the channel set based on one or more of a characteristic of a physical resource, a global UE identifier, and the temporary identifier.
12. The method of claim 1 , wherein the initial message further comprises a global UE identifier.
13. The method of claim 1 , further comprising determining a physical resource and wherein the transmitting of the initial message comprises transmitting the initial message in accordance with the determined physical resource.
14. The method of claim 1 , further comprising signaling an indication of the channel set.
15. The method of claim 1 , further comprising implicitly communicating an indication of the channel set.
16. The method of claim 1 , wherein the transmitting of the initial message to the network equipment comprises transmitting a scheduling request message.
17. The method of claim 1 , wherein the transmitting of the initial message to the network equipment comprises transmitting an RRC connection request message.
18. The method of claim 1 , further comprising:
timing out after the transmitting the initial message and before the receiving of the downlink message;
determining a different physical resource; and
transmitting a new initial message on the different physical resource.
19. The method of claim 1 , further comprising changing an association between channel sets and temporary identifiers.
20. The method of claim 1 , further comprising changing an association between channel sets and one or more characteristics of a physical resource.
21. The method of claim 1 , further comprising changing an association of channel sets as a function of time.
22. The method of claim 1 , further comprising changing an association of channel sets in response to receiving a signal from the network equipment.
23. The method of claim 1 , wherein the wireless communication system comprises an evolved UMTS Terrestrial Radio Access Network (E-UTRAN).
24. A user equipment used in initiating a wireless connection and subsequent communication over a shared physical resource in a wireless communication system between the user equipment and network equipment, the user equipment comprising:
a memory;
a processor coupled to the memory; and
program code executable on the processor, the program code operable for:
deriving an address to be used as a temporary identifier for the user equipment;
deriving a channel set of at least one downlink channel for the user equipment to receive communications from the network equipment;
transmitting an initial message to the network equipment, the initial message comprising the temporary identifier;
receiving a downlink message on a channel identified by the channel set, wherein the downlink message conveys the temporary identifier and a description of a scheduled resource on a shared channel, the scheduled resource comprising a resource allocated to the user equipment by the network equipment; and
communicating data on the scheduled resource in response to the downlink message.
25. The user equipment of claim 24 , wherein the deriving of the channel set comprises randomly selecting the channel set from a plurality of channel sets.
26. The user equipment of claim 24 , wherein the deriving of the channel set comprises determining the channel set as a function of one or more characteristics of a physical resource, and wherein the transmitting of the initial message comprises transmitting the initial message on the physical resource.
27. The user equipment of claim 24 , wherein the transmitting of the temporary identifier to the network equipment includes transmitting the temporary identifier within a first uplink message containing the temporary identifier and a request for the scheduled resource.
28. The user equipment of claim 24 , wherein the deriving of the channel set comprises determining the channel set based on one or more of a characteristic of a physical resource, a global UE identifier, and the temporary identifier.
29. The user equipment of claim 24 , wherein the program code is further operable for determining a physical resource and wherein the transmitting of the initial message comprises transmitting the initial message in accordance with the determined physical resource.
30. The user equipment of claim 24 , wherein the program code is further operable for signaling an indication of the channel set.
31. The user equipment of claim 24 , wherein the program code is further operable for implicitly communicating an indication of the channel set.
32. A network equipment used in initiating a wireless connection and subsequent communication over a shared physical resource in a wireless communication system between user equipment and the network equipment, the network equipment comprising:
a memory;
a processor coupled to the memory; and
program code executable on the processor, the program code operable for:
receiving an initial message sent by the user equipment wherein the initial message comprises an address derived by a user equipment to be used as a temporary identifier;
allocating a scheduled resource to the user equipment, the scheduled resource comprising a resource on a shared channel;
transmitting a downlink message on a channel belonging to a channel set derived by the user equipment, the downlink message conveying the temporary identifier and a description of the scheduled resource; and
communicating data on the scheduled resource.
33. The network equipment of claim 32 , wherein the determining the channel set comprises extracting a channel indication from the initial message, the channel indication indicating the channel set.
34. The network equipment of claim 32 , wherein the determining the channel set comprises determining the channel set from the physical resource carrying the initial message.
35. The network equipment of claim 32 , wherein the program code is further operable for communicating to the UE a change in an association between channel sets and one or more characteristics of a physical resource.
36. A non-transitory computer-readable medium encoded with executable instructions, the executable instructions comprising program code for initiating a wireless connection and subsequent communication over a shared physical resource in a wireless communication system between user equipment and network equipment, the executable instructions comprising instructions for, at a user equipment:
deriving an address to be used as a temporary identifier for the user equipment;
deriving a channel set of at least one downlink channel for the user equipment to receive communications from the network equipment;
transmitting an initial message to the network equipment, the initial message comprising the temporary identifier;
receiving a downlink message on a channel identified by the of the channel set, wherein the downlink message conveys the temporary identifier and a description of a scheduled resource on a shared channel, the scheduled resource comprising a resource allocated to the user equipment by the network equipment; and
communicating data on the scheduled resource in response to the downlink message.
37. A method of initiating a wireless connection and subsequent communication over a shared physical resource in a wireless communication system between user equipment and network equipment, the method comprising, at the network equipment:
receiving an initial message sent by the user equipment wherein the initial message comprises an address derived by a user equipment to be used as a temporary identifier;
allocating a scheduled resource to the user equipment, the scheduled resource comprising a resource on a shared channel;
transmitting a downlink message on a channel belonging to a channel set derived by the user equipment, the downlink message conveying the temporary identifier and a description of the scheduled resource; and
communicating data on the scheduled resource.
38. A non-transitory computer-readable medium encoded with executable instructions, the executable instructions comprising program code for initiating a wireless connection and subsequent communication over a shared physical resource in a wireless communication system between user equipment and network equipment, the executable instructions comprising instructions for, at the network equipment:
receiving an initial message sent by the user equipment wherein the initial message comprises an address derived by a user equipment to be used as a temporary identifier;
allocating a scheduled resource to the user equipment, the scheduled resource comprising a resource on a shared channel;
transmitting a downlink message on a channel belonging to a channel set derived by the user equipment, the downlink message conveying the temporary identifier and a description of the scheduled resource; and
communicating data on the scheduled resource.