A mobile station configured to interact with a base station subsystem, BSS, (202 1 ), the mobile station enabled for power efficient operation, PEO, and capable of performing a multilateration timing advance, MTA, procedure, the mobile station comprising: a processor ; and, a memory that stores processor-executable instructions, wherein the processor interfaces with the memory to execute the processor-executable instructions, whereby the mobile station is operable to: receive an MTA request message for the mobile station to perform a radio access part of the MTA procedure; transmit, to the BSS (202 1 ), a multilateration request message (270 1 ) that indicates an Access Burst method for performing the MTA procedure with no additional transmissions performed by the mobile station ; and receive, from the BSS (202 1 ), an assignment message (274 1 ) acknowledging that the BSS (202 1 ) received the multilateration request message (270 1 ) without assigning radio resources for the mobile station , characterized in that an information element, IE, of the assignment message (274 1 ) includes a plurality of Short ID field values allowing the BSS (202 1 ) to address, within the assignment message (274 1 ), a plurality of mobile stations performing the MTA procedure using the Access Burst method. a processor ; and, a memory that stores processor-executable instructions, wherein the processor interfaces with the memory to execute the processor-executable instructions, whereby the mobile station is operable to: receive an MTA request message for the mobile station to perform a radio access part of the MTA procedure; transmit, to the BSS (202 1 ), a multilateration request message (270 1 ) that indicates an Access Burst method for performing the MTA procedure with no additional transmissions performed by the mobile station ; and receive, from the BSS (202 1 ), an assignment message (274 1 ) acknowledging that the BSS (202 1 ) received the multilateration request message (270 1 ) without assigning radio resources for the mobile station , characterized in that an information element, IE, of the assignment message (274 1 ) includes a plurality of Short ID field values allowing the BSS (202 1 ) to address, within the assignment message (274 1 ), a plurality of mobile stations performing the MTA procedure using the Access Burst method. receive an MTA request message for the mobile station to perform a radio access part of the MTA procedure; transmit, to the BSS (202 1 ), a multilateration request message (270 1 ) that indicates an Access Burst method for performing the MTA procedure with no additional transmissions performed by the mobile station ; and receive, from the BSS (202 1 ), an assignment message (274 1 ) acknowledging that the BSS (202 1 ) received the multilateration request message (270 1 ) without assigning radio resources for the mobile station , characterized in that an information element, IE, of the assignment message (274 1 ) includes a plurality of Short ID field values allowing the BSS (202 1 ) to address, within the assignment message (274 1 ), a plurality of mobile stations performing the MTA procedure using the Access Burst method. <EOS>