Extended System Information Distribution Mechanisms

• US 20150382284A1
• Filed: 01/22/2014
• Published: 12/31/2015
• Est. Priority Date: 02/25/2013
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: LARSSON, Erik, RUNE, Johan, BRISMAR, Sofia, BERGSTRM, Joakim, OVESJ, Fredrik
• Granted Patent: US 9,967,805 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04W 28/082 among bearers or channels
• CPC Class Codes: H04W 48/10 using broadcasted information
• CPC Class Codes: H04W 48/12 using downlink control channel
• CPC Class Codes: H04W 74/04 Scheduled access hybrid access H04W74/02

Abstract

A disclosed method is implemented by a network node in a wireless communication network to transmitting system information to a plurality of wireless terminals. The network node transmits a first group of system information blocks (SIBs) via a first physical channel, and transmits a second group of additional SIBs via a different, second physical channel. A corresponding network node operative to implement the method is also disclosed. Another disclosed method is implemented by a wireless terminal in a wireless communication network. The wireless terminal processes information received from a base station over a first physical channel to identify a first group of SIBs, and processes information received from the base station over a different, second physical channel to identify a second group of additional SIBs. A corresponding wireless terminal operative to implement the method is also disclosed.

Claims

1. A method implemented by a network node in a wireless communication network of transmitting system information to a plurality of wireless terminals, the method characterized by:

transmitting a first group of system information blocks (SIBs) via a first physical channel; and

transmitting a second group of additional SIBs via a different, second physical channel.

2. The method of claim 1:

wherein the first physical channel is configured to be read by a first group of wireless terminals and also by a different, second group of wireless terminals; and

wherein the second physical channel is configured to be read by only one of the first and second group of wireless terminals.

3. The method of claim 1, further characterized by:

transmitting, via the first physical channel, scheduling information for reception of the additional SIBs on the second physical channel.

4. The method of claim 1, further characterized by:

transmitting, via the second physical channel, scheduling information for reception of the additional SIBs; and

transmitting, via the first physical channel, either additional scheduling information for reception of the additional SIBs or an indication that the additional SIBs are going to be transmitted via the second physical channel.

5. The method of claim 1, wherein transmitting the second group of additional SIBs via the second physical channel is characterized by:

transmitting, via the second physical channel, one or more first SIBs that only include static system information; and

transmitting, via the second physical channel, one or more second SIBs that only include dynamic system information.

6. The method of claim 5, wherein the one or more first SIBs that only include static system information are transmitted according to a first repetition period, and the one or more second SIBs that only include dynamic system information are transmitted according to a different, second repetition period.

7. The method of claim 5:

wherein the one or more first SIBs comprises a single first SIB that includes all static system information; and

wherein the one or more second SIBs comprises a single second SIB that includes all dynamic system information.

8. The method of claim 1, further characterized by:

performing load balancing between the first and second physical channels by including a SIB from the first group of SIBs in the second group of additional SIBs.

9. The method of claim 1:

wherein the first physical channel is a Primary Common Control Physical Channel (P CCPCH); and

wherein the second physical channel is one of a Secondary Common Control Physical Channel (S-CCPCH) and a High Speed Physical Downlink Shared Channel (HS PDSCH).

10. A network node comprising:

a transceiver; and

one or more processing circuits configured to utilize the transceiver to implement the method of claim 1.

11. A method implemented by a wireless terminal in a wireless communication network, the method characterized by:

processing information received from a base station over a first physical channel to identify a first group of system information blocks (SIBs);

processing information received from the base station over a different, second physical channel to identify a second group of additional SIBs.

12. The method of claim 11:

wherein the first physical channel is configured to be read by a first group of wireless terminals and also by a different, second group of wireless terminals;

wherein the second physical channel is configured to be read by only the second group of wireless terminals; and

wherein the wireless terminal is part of the second group of wireless terminals.

13. The method of claim 11, wherein identification of the second group of additional SIBs is based on:

processing information received from the base station over the first physical channel to identify scheduling information for reception of the additional SIBs on the second physical channel.

14. The method of claim 11, further characterized by:

processing information received from the base station over the second physical channel to identify scheduling information for reception of the additional SIBs; and

processing information received from the base station over the first physical channel to identify either additional scheduling information for reception of the additional SIBs or an indication that the additional SIBs are going to be transmitted via the second physical channel.

15. The method of claim 11, wherein said processing information received from the base station over the second physical channel to identify the second group of additional SIBs is characterized by:

identifying, from the information received over the second physical channel, one or more first SIBs that only include static system information; and

identifying, from the information received over the second physical channel, one or more second SIBs that only include dynamic system information.

16. The method of claim 15, wherein the one or more first SIBs that only include static system information are received according to a first repetition period, wherein the one or more second SIBs that only include dynamic system information are received according to a different, second repetition period.

17. The method of claim 15:

wherein the one or more first SIBs comprises a single first SIB that includes all static system information; and

wherein the one or more second SIBs comprises a single second SIB that includes all dynamic system information.

18. The method of claim 11:

wherein the first physical channel is a Primary Common Control Physical Channel (P CCPCH); and

wherein the second physical channel is one of a Secondary Common Control Physical Channel (S-CCPCH) and a High Speed Physical Downlink Shared Channel (HS PDSCH).

19. A wireless terminal comprising:

a transceiver; and

one or more processing circuits configured to utilize the transceiver to implement the method of claim 11.