The agreement is expected to clear the way for Motorola Solutions to complete the sale of its networking division to Nokia Siemens Networks.

Separately, in a filing Wednesday with the Securities and Exchange Commission, Motorola Solutions and Nokia Siemens said they expected to close the sale by April 29, pending approval by Chinese regulators.

The companies also said the price Nokia Siemens would pay for Motorola Solutions’ networking unit had been reduced to $975 million from $1.2 billion. The companies did not explain why the price had been reduced.

Motorola Solutions and Huawei issued a joint statement late Wednesday in Beijing. Motorola Solutions said it had agreed to drop a lawsuit filed last year in an Illinois court accusing Huawei of conspiring with several Motorola workers to steal trade secrets.

Motorola Solutions, which focuses on business customers, split off from Motorola in January. http://www.nytimes.com/2011/04/14/technology/14huawei.html