Medium Access Control for Wireless Systems

• US 20130235748A1
• Filed: 04/02/2013
• Published: 09/12/2013
• Est. Priority Date: 07/07/2008
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Apple Inc.
• Inventors: Fong, Mo-Han, Zhang, Hang, Novak, Robert
• Granted Patent: US 9,055,454 B2
• Time in Patent Office: Days
• US Class Current: 370/252
• CPC Class Codes: H04L 63/162 at the data link layer
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 52/262 taking into account adaptive modulation and coding [AMC] scheme AMC per se H04L1/0001
• CPC Class Codes: H04W 74/00 Wireless channel access
• CPC Class Codes: H04W 8/26 Network addressing or numbering for mobility support

Abstract

A method for execution by a mobile station (MS) in a mobile communications network, the method comprising: receiving a first MS identifier from the network during a ranging operation involving the MS; using the first MS identifier to extract the contents of at least one message received from the network during said ranging operation; using a second MS identifier, different from the first MS identifier, to extract the contents of at least one message received from the network after said ranging operation is complete. Also, a method for execution by the base station, comprising: outputting a first message destined for the MS, the first message including a first identifier for use by the MS during a ranging operation; determining that said ranging operation is complete; outputting a second message destined for the MS, the second message including a second identifier for use by the MS in subsequent communication with the network.

Claims

1-105. -105. (canceled)

106. A method for execution by a mobile station in a mobile communications network, the method comprising:

receiving a first mobile station identifier from the network during a ranging operation involving the mobile station;

using the first mobile station identifier to extract the contents of at least one message received from the network during said ranging operation;

using a second mobile station identifier, different from the first mobile station identifier, to extract the contents of at least one message received from the network after said ranging operation is complete.

107. The method of claim 106,

wherein the first message further identifies the set of ranging resources,

wherein the set of ranging resources includes a ranging code and a ranging time slot.

108. The method of claim 106, further comprising:

after receiving the first mobile station identifier, sending a ranging message to the network, the ranging message being characterized by a set of ranging resources.

109. The method of claim 106, wherein the second mobile station identifier is included in a particular message received during the ranging operation.

110. The method defined in claim 106, wherein at least one of the ranging code and the ranging time slot is selected by the mobile station.

111. The method of claim 106, wherein at least one of the ranging code and the ranging time slot is selected at random.

112. The method of claim 106, wherein the first message includes a set of assigned ranging resources.

113. A mobile station, configured to operate in a mobile communications network, comprising:

wireless communication circuitry, wherein the wireless communication circuitry is configured to perform wireless communication in the mobile communications network; and

processing hardware coupled to the wireless communication circuitry, wherein the processing hardware is configured to operate with the wireless communication circuitry to;

receive a first mobile station identifier from the network during a ranging operation involving the mobile station;

use the first mobile station identifier to extract the contents of at least one message received from the network during said ranging operation; and

use a second mobile station identifier, different from the first mobile station identifier, to extract the contents of at least one message received from the network after said ranging operation is complete.

114. The mobile station of claim 113,

wherein the first message further identifies the set of ranging resources,

wherein the set of ranging resources includes a ranging code and a ranging time slot.

115. The mobile station of claim 113, wherein the processing hardware is further configured to:

after receiving the first mobile station identifier, send a ranging message to the network, the ranging message being characterized by a set of ranging resources.

116. The mobile station of claim 113, wherein the second mobile station identifier is included in a particular message received during the ranging operation.

117. The mobile station of claim 113, wherein at least one of the ranging code and the ranging time slot is selected by the mobile station.

118. The mobile station of claim 113, wherein at least one of the ranging code and the ranging time slot is selected at random.

119. The mobile station of claim 113, wherein the first message includes a set of assigned ranging resources.

120. A non-transitory computer-readable storage medium storing program instructions which, when executed by a processor of a mobile station, cause the mobile station to:

extract the contents of at least one message received from a network during a ranging operation based on using a first mobile station identifier; and

extract the contents of at least one message received from the network after said ranging operation is complete based on using a second mobile station identifier different from the first mobile station identifier.

121. The non-transitory computer-readable storage medium of claim 120,

wherein the first message further identifies the set of ranging resources,

wherein the set of ranging resources includes a ranging code and a ranging time slot.

122. The non-transitory computer-readable storage medium of claim 120, wherein the program instructions are further executable by the processor to:

after receiving the first mobile station identifier, send a ranging message to the network, the ranging message being characterized by a set of ranging resources.

123. The non-transitory computer-readable storage medium of claim 120, wherein the second mobile station identifier is included in a particular message received during the ranging operation.

124. The non-transitory computer-readable storage medium of claim 120, wherein at least one of the ranging code and the ranging time slot is selected by the mobile station.

125. The non-transitory computer-readable storage medium of claim 120, wherein at least one of the ranging code and the ranging time slot is selected at random.