System and method for routing SUPL proxy-mode traffic when multiple nodes are deployed in a network
A system and method for connecting a mobile device to a node in a wireless network. A query may be received for a mobile device from a location based application. In response to the query a first message may be transmitted to the mobile device from a first node, the first message being populated with at least one predetermined parameter. At a second node, it may then be determined whether to forward a second message from the mobile device to the first node via the second node as a function of the availability of the first node or the at least one predetermined parameter.
1. A method comprising:
receiving, at a wireless device, a secure user plane location (SUPL) initiation message generated by a particular SUPL location platform (SLP) of a plurality of SLPs, wherein the SUPL initiation message includes a fully qualified domain name (FQDN) for the plurality of SLPs and a network address of the particular SLP;
augmenting, at the wireless device, the FQDN to include a unique identifier associated with the particular SLP:
querying, at the wireless device, a domain name system (DNS) for a resolution to the augmented FQDN;
receiving, at the wireless device, a list of network addresses from the DNS, wherein the list of network addresses includes network addresses for each of the plurality of SLPs;
matching the augmented FQDN associated with the particular SLP with a network address in the list of network addresses to determine a matched network address; and
establishing, by the wireless device, a connection with a network node assigned the matched network address.
2. The method of claim 1 , wherein the particular SLP is assigned the matched network address.
3. The method of claim 2 , wherein the connection between the wireless device and the particular SLP is a transport security layer (TLS) connection.
4. The method of claim 3 , further comprising:
sending, at the wireless device, position information to the particular SLP via the TLS connection.
5. The method of claim 1 , wherein the list of network addresses includes a network address assigned to a global server load balancing (GSLB) node.
6. The method of claim 5 , wherein the GSLB node is configured to distribute location requests among the plurality of SLPs.
7. The method of claim 5 , wherein the network address assigned to the GSLB node is a first address in the list of network addresses.
8. The method of claim 5 , wherein the GSLB node is logically positioned between the wireless device and each of the plurality of SLPs.
9. The method of claim 1 , wherein the network address of the particular SLP node is included in a SLPId field of the SULP initiation message.
10. The method of claim 1 , wherein the network address of the particular SLP node is an Internet Protocol (IP) address of the particular SLP.
11. The method of claim 10 , wherein the particular SLP of the plurality of SLPs is a home SLP (H-SLP) of the wireless device.
12. A method comprising:
receiving, at a particular secure user plane location (SUPL) location platform (SLP) of a plurality of SLPs, a network initiated location request for a wireless device;
sending, at the particular SLP, a SULP initiation message that includes a fully qualified domain name (FQDN) and a network address of the particular SLP;
augmenting ,by the wireless device, the FQDN to include a unique identifier associated with the particular SLP;
resolving the augmented FQDN to a list of network addresses that includes a network address for each of the plurality of SLPs; and
establishing, by the particular SLP, a connection with the wireless device in response to a reply to the initiation message.
13. The method of claim 12 , wherein the reply to the initiation message is an SLP POS INIT message.
14. The method of claim 12 , further comprising:
resolving the augmented FQDN to a global server load balancing (GSLB) node.
15. The method of claim 14 , wherein a first network address in the list of network addresses is assigned to the GSLB node.
16. The method of claim 14 , wherein the GSLB node is logically positioned between the plurality of SLPs and the wireless device.
17. The method of claim 12 , wherein the network address of the particular SLP is included in a SLPId field of the SUPL initiation message.
18. The method of claim 12 , wherein the connection between the particular SLP and the wireless device is a transport layer security (TLS) connection.
19. A wireless device comprising a computing device communicating on a wireless network, the wireless device being configured to:
receive a secure user plane location (SUPL) initiation message generated from a particular SUPL location platform (SLP) of a plurality of SLPs, wherein the SULP initiation message includes a fully qualified domain name (FQDN) for the plurality of SLPs;
augment the FQDN to include a unique identifier associated with the particular SLP;
query a domain name system (DNS) for a resolution to the FQDN;
examine the SUPL initiation message to determine if a network address for the particular SLP is included in the SUPL initiation message;
receive a list of network addresses provided by the DNS, wherein the list of network addresses includes network addresses for each of the plurality of SLPs; and
establish a connection with a network node that is assigned a network address included in the list of network addresses.
20. The wireless device of claim 19 , wherein the network address of the particular SLP is included in the SUPL initiation message, and the network node is the particular SLP.