Method for indicating physical cell identifier and apparatus
First Claim
Patent Images
1. A method comprising:
- determining, by a terminal device, according to a first broadcast message sent by a base station, a physical cell identifier (PCI) of a target cell in which the terminal device is located;
determining, by the terminal device, a first scrambling code according to a preferred pair of maximal length linear feedback shift register sequences (m-sequences), wherein a first m-sequence of the pair of m-sequences is predetermined, and wherein a second m-sequence of the pair of m-sequences comprises the PCI of the target cell;
determining, by the terminal device, an extended PCI of the target cell according to a second broadcast message sent by the base station and the first scrambling code, wherein the extended PCI identifies the target cell alone or in combination with the PCI of the target cell; and
receiving, by the terminal device, data sent from the base station, and descrambling the data according to a second scrambling code determined from the preferred pair of m-sequences and according to the extended PCI.
1 Assignment
0 Petitions
Accused Products
Abstract
Embodiments of the present invention provide a method for indicating a physical cell identifier and an apparatus, and relate to the field of communications technologies. The method includes determining, by the terminal device according to a first broadcast message sent by the base station, a PCI of a target cell in which the terminal device is located and determining a first scrambling code according to the PCI of the target cell. The method also includes determining an extended PCI of the target cell according to a second broadcast message sent by the base station and the first scrambling code.
-
Citations
18 Claims
-
1. A method comprising:
-
determining, by a terminal device, according to a first broadcast message sent by a base station, a physical cell identifier (PCI) of a target cell in which the terminal device is located; determining, by the terminal device, a first scrambling code according to a preferred pair of maximal length linear feedback shift register sequences (m-sequences), wherein a first m-sequence of the pair of m-sequences is predetermined, and wherein a second m-sequence of the pair of m-sequences comprises the PCI of the target cell; determining, by the terminal device, an extended PCI of the target cell according to a second broadcast message sent by the base station and the first scrambling code, wherein the extended PCI identifies the target cell alone or in combination with the PCI of the target cell; and receiving, by the terminal device, data sent from the base station, and descrambling the data according to a second scrambling code determined from the preferred pair of m-sequences and according to the extended PCI. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A method comprising:
-
sending, by a base station, a first broadcast message, wherein the first broadcast message carries a physical cell identifier (PCI) information of a target cell and is scrambled according to a first scrambling code generated according to a preferred pair of maximal length linear feedback shift register sequences (m-sequences), wherein a first m-sequence of the pair of m-sequences is predetermined, and wherein a second m-sequence of the pair of m-sequences comprises the PCI of the target cell; sending, by the base station, a second broadcast message, wherein the second broadcast message carries an extended PCI of the target cell, and wherein the extended PCI identifies the target cell alone or in combination with a PCI of the target cell identifies the target cell, wherein the PCI of the target cell corresponds to a first scrambling code sequence, and wherein the extended PCI of the second broadcast message is scrambled using the first scrambling code sequence; and sending, by the base station, to a terminal device, data scrambled to a second scrambling code determined from the preferred pair of m-sequences according to the extended PCI. - View Dependent Claims (7, 8, 9)
-
-
10. A terminal device, comprising:
-
a processor; and a non-transitory computer readable storage medium storing a program for execution by the processor, the program including instructions to; determine, according to a first broadcast message sent by a base station, a physical cell identifier (PCI) of a target cell in which the terminal device is located; determine a first scrambling code according to a preferred pair of maximal length linear feedback shift register sequences (m-sequences), wherein a first m-sequence of the pair of m-sequences is predetermined, and wherein a second m-sequence of the pair of m-sequences comprises the PCI of the target cell; and determine an extended PCI of the target cell according to a second broadcast message sent by the base station and according to the first scrambling code, wherein the extended PCI identifies the target cell alone or in combination with the PCI of the target cell identifies the target cell; and receive, by the terminal device, data sent from the base station, and descramble the data according to a second scrambling code determined from the preferred pair of m-sequences and according to the extended PCI. - View Dependent Claims (11, 12, 13, 14)
-
-
15. A base station, comprising:
-
a processor; and a non-transitory computer readable storage medium storing a program for execution by the processor, the program including instructions to; send a first broadcast message, wherein the first broadcast message carries physical cell identifier (PCI) information of a target cell and is scrambled according to a first scrambling code generated according to a preferred pair of maximal length linear feedback shift register sequences (m-sequences), wherein a first m-sequence of the pair of m-sequences is predetermined, and wherein a second m-sequence of the pair of m-sequences comprises the PCI of the target cell; and send a second broadcast message, wherein the second broadcast message carries an extended PCI of the target cell, and wherein the extended PCI identifies the target cell alone or in combination with a PCI of the target cell identifies the target cell, wherein the PCI of the target cell corresponds to a first scrambling code sequence, and wherein the extended PCI of the second broadcast message is scrambled using the first scrambling code sequence; and send, to a terminal device, data scrambled to a second scrambling code determined from the preferred pair of m-sequences according to the extended PCI. - View Dependent Claims (16, 17, 18)
-
Specification